CN108928725B

CN108928725B - Safety elevator

Info

Publication number: CN108928725B
Application number: CN201810812449.6A
Authority: CN
Inventors: 江斌华
Original assignee: Fujian Keda High Tech Development Co ltd
Current assignee: Fujian Keda High Tech Development Co ltd
Priority date: 2017-03-30
Filing date: 2017-03-30
Publication date: 2020-06-19
Anticipated expiration: 2037-03-30
Also published as: CN108928725A; CN106946133A; CN106946133B

Abstract

The invention provides a safety elevator capable of falling in a delayed manner, wherein a first deformation cavity is used for a first active elastic air bag to deform so as to store the energy of the first active elastic air bag, and a second deformation cavity is used for a second active elastic air bag to deform so as to store the energy of the second active elastic air bag, so that the contact time of a first movable contact part and a first fixed contact part as well as the contact time of a second movable contact part and a second fixed contact part is delayed; the third deformation cavity is used for the third active elastic airbag to deform so as to store the energy of the third active elastic airbag, and the fourth deformation cavity is used for the fourth active elastic airbag to deform so as to store the energy of the fourth active elastic airbag, so that the contact time of the third movable contact part and the third fixed contact part and the contact time of the fourth movable contact part and the fourth fixed contact part are delayed. Therefore, the invention can delay the opening of the outer door, ensure that the outer door is opened only when the lift car is stopped stably, and effectively avoid the accidental falling of the personnel on the floor into the elevator shaft.

Description

Safety elevator

The patent application of the invention is a divisional application of a Chinese patent application No. 201710200351.0, the application No. of the original application is 201710200351.0, the application date is 2017, 03 and 30, and the invention name is an elevator for delaying door opening and preventing falling of floor personnel.

Technical Field

The invention relates to the field of elevators, in particular to a safety elevator.

Background

The vertical lift elevator is widely applied as building equipment commonly used in daily life of people, the structure of the vertical lift elevator is known, the general structure comprises a lift car with an inner door and an outer door arranged on an elevator shaft and corresponding to a corresponding floor, the outer door is provided with a motor for driving the outer door to be opened, in the actual use process, when the lift car does not reach the corresponding floor and is stable, the outer door of the corresponding floor is automatically opened due to certain factors, and personnel on the corresponding floor can fall into the elevator shaft carelessly due to factors such as judgment errors and the like to cause casualties.

Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.

Disclosure of Invention

The invention aims to provide a safety elevator which can delay the opening of an outer door, ensure that the outer door is opened only when a lift car is stopped stably, effectively avoid floor personnel from falling into an elevator shaft carelessly, ensure the personal safety of the floor personnel, and has novel and reasonable structure and strong practicability.

In order to achieve the purpose, the invention adopts the following technical scheme:

a safety elevator comprises an outer door arranged on an elevator shaft corresponding to a corresponding floor, wherein the outer door is provided with a motor for driving the outer door to open; the outer door is provided with a door opening device, and the door opening device comprises a door opening circuit, a door opening switch for conducting and controlling the door opening circuit, and a trigger device for triggering the door opening switch to conduct and open the outer door; the door opening circuit comprises a main lead circuit communicated with a power supply and the motor, and the main lead circuit comprises a first lead branch and a second lead branch which are mutually connected in parallel; the gate-opening switch comprises a first switch and a second switch which are connected in series in the first conductor branch for conducting control, and a third switch and a fourth switch which are connected in series in the second conductor branch for conducting control; the triggering device comprises a first triggering device for driving the elevator car upwards to trigger the first switch, a second triggering device for triggering the second switch, a third triggering device for driving the elevator car downwards to trigger the third switch and a fourth triggering device for triggering the fourth switch; the first switch comprises a first fixed contact part and a first moving contact part which are matched, the second switch comprises a second fixed contact part and a second moving contact part which are matched, the third switch comprises a third fixed contact part and a third moving contact part which are matched, and the fourth switch comprises a fourth fixed contact part and a fourth moving contact part which are matched;

the first triggering device is arranged on the side wall of the elevator shaft and corresponds to the lower part level of the outer door, the second triggering device is arranged on the side wall of the elevator shaft and corresponds to the upper part level of the outer door, the third triggering device is arranged on the side wall of the elevator shaft and corresponds to the upper part level of the outer door, and the fourth triggering device is arranged on the side wall of the elevator shaft and corresponds to the lower part level of the outer door;

the first trigger device comprises a first cylinder embedded on the side wall of the elevator shaft, a first driving device, a first driving elastic air bag extruded by the first driving device, a first driven elastic air bag communicated with the first driving elastic air bag, a first driving sliding block driven by the first driven elastic air bag, a first driven sliding block driven by the first driving sliding block and bearing the first movable contact part, and a first fixed block bearing the first fixed contact part, wherein the first driving device is arranged in the first cylinder from the outer end to the inner end in sequence; the first cylinder comprises a first active cavity for accommodating the first driving device and the first active elastic air bag, and a first passive cavity for accommodating the first passive elastic air bag, the first active sliding block, the first passive sliding block and the first fixed block; the first driving device comprises a first driving sliding block arranged at an outer port of the first driving cavity in a sliding manner, and a first extruded block which is pivoted with the first driving sliding block, can be turned over up and down and protrudes out of the side wall of the elevator shaft to extrude the elevator car to move upwards; the inner end of the first driving sliding block abuts against the outer end of the first active elastic air bag, and the outer end of the first driving sliding block comprises two first pivoting pieces which extend outwards and are pivoted on two sides of the first extruded block and a first blocking piece which is connected to the upper sides of the two first pivoting pieces and blocks the first extruded block from turning upwards to exceed the horizontal plane; a first driving inclined plane which is gradually inclined from the inner end to the outer end from bottom to top is formed at the outer end of the first extruded block; a first communicating channel is formed between the first active cavity and the first passive cavity, and the cross-sectional area of the first communicating channel is smaller than that of the first active cavity and that of the first passive cavity; the first active elastic air bag and the first passive elastic air bag are communicated through a first vent pipeline accommodated in the first communication channel; a first deformation cavity corresponding to the side face of the first active elastic air bag and used for deformation of the first active elastic air bag is formed in the side wall of the first active cavity, and the first deformation cavity is provided with a first breathing channel communicated with the outside; the inner end of the first passive elastic air bag abuts against the outer end of the first driving sliding block, a first buffer spring is arranged between the inner end of the first driving sliding block and the outer end of the first passive sliding block in an opening mode, a first limiting plate located between the first driving sliding block and the first passive sliding block is formed on the side wall of the first passive cavity, and a through hole for the first buffer spring to penetrate through is formed in the first limiting plate; the first movable contact part is arranged at the inner end of the first driven sliding block, the first fixed contact part is arranged on the first fixed block and corresponds to the first movable contact part, an insulation gap is formed between the first fixed block and the first movable contact part, and a first insulation retaining spring is arranged between the inner end of the first driven sliding block and the first fixed block in an extending manner;

the second trigger device comprises a second cylinder embedded on the side wall of the elevator shaft, a second driving device, a second driving elastic air bag extruded by the second driving device, a second driven elastic air bag communicated with the second driving elastic air bag, a second driving sliding block driven by the second driven elastic air bag, a second driven sliding block driven by the second driving sliding block and bearing the second movable contact part, and a second fixed block bearing the second fixed contact part, wherein the second driving device is arranged in the second cylinder from the outer end to the inner end in sequence; the second cylinder comprises a second driving cavity for accommodating the second driving device and the second driving elastic air bag, and a second driven cavity for accommodating the second driven elastic air bag, the second driving sliding block, the second driven sliding block and the second fixed block; the second driving device comprises a second driving sliding block which is arranged at an outer port of the second driving containing cavity in a sliding mode, and a second extruded block which is pivoted with the second driving sliding block, can be turned over up and down and protrudes out of the side wall of the elevator shaft to enable the elevator car to move upwards and extrude the second extruded block; the inner end of the second driving sliding block abuts against the outer end of the second active elastic air bag, and the outer end of the second driving sliding block comprises two second pivoting pieces which extend outwards and are pivoted on two sides of the second extruded block and a second blocking piece which is connected to the upper sides of the two second pivoting pieces and blocks the second extruded block from turning upwards and exceeding the horizontal plane; a second driving inclined plane which is gradually inclined from the inner end to the outer end from bottom to top is formed at the outer end of the second extruded block; a second communicating channel is formed between the second active cavity and the second passive cavity, and the cross section area of the second communicating channel is smaller than that of the second active cavity and that of the second passive cavity; the second active elastic air bag and the second passive elastic air bag are communicated through a second air passage accommodated in the second communicating passage; a second deformation cavity corresponding to the side face of the second active elastic air bag and used for deformation of the second active elastic air bag is formed in the side wall of the second active cavity, and the second deformation cavity is provided with a second breathing channel communicated with the outside; the inner end of the second passive elastic air bag abuts against the outer end of the second driving sliding block, a second buffer spring is arranged between the inner end of the second driving sliding block and the outer end of the second passive sliding block in an expanding mode, a second limiting plate located between the second driving sliding block and the second passive sliding block is formed on the side wall of the second passive cavity, and a through hole for the second buffer spring to penetrate through is formed in the second limiting plate; the second movable contact part is arranged at the inner end of the second driven sliding block, the second fixed contact part is arranged on the second fixed block and corresponds to the second movable contact part, an insulation gap is formed between the second fixed block and the second movable contact part, and a second insulation retaining spring is arranged between the inner end of the second driven sliding block and the second fixed block in an extending manner;

the third trigger device comprises a third cylinder embedded on the side wall of the elevator shaft, a third driving device, a third driving elastic air bag extruded by the third driving device, a third driven elastic air bag communicated with the third driving elastic air bag, a third driving sliding block driven by the third driven elastic air bag, a third driven sliding block driven by the third driving sliding block and bearing the third movable contact part, and a third fixed block bearing the third fixed contact part, wherein the third driving device is arranged in the third cylinder from the outer end to the inner end in sequence; the third cylinder comprises a third driving cavity for accommodating the third driving device and the third driving elastic air bag, and a third passive cavity for accommodating the third passive elastic air bag, the third driving sliding block, the third passive sliding block and the third fixed block; the third driving device comprises a third driving sliding block arranged at an outer port of the third driving accommodating cavity in a sliding manner, and a third extruded block which is pivoted with the third driving sliding block, can be turned over up and down and protrudes out of the side wall of the elevator shaft for the downward movement and extrusion of the elevator car; the inner end of the third driving sliding block abuts against the outer end of the third active elastic air bag, and the outer end of the third driving sliding block comprises two third pivoting pieces which extend outwards and are pivoted on two sides of the third extruded block and a third blocking piece which is connected to the lower sides of the two third pivoting pieces and blocks the third extruded block from turning downwards to exceed the horizontal plane; a third driving inclined plane which is inclined from the inner end to the outer end gradually is formed at the outer end of the third extruded block from top to bottom; a third communicating channel is formed between the third active cavity and the third passive cavity, and the cross-sectional area of the third communicating channel is smaller than that of the third active cavity and that of the third passive cavity; the third active elastic air bag and the third passive elastic air bag are communicated through a third air passage accommodated in the third communicating passage; a third deformation cavity corresponding to the side face of the third active elastic air bag and used for deformation of the third active elastic air bag is formed in the side wall of the third active cavity, and the third deformation cavity is provided with a third breathing channel communicated with the outside; the inner end of the third passive elastic airbag abuts against the outer end of the third driving sliding block, a third buffer spring is arranged between the inner end of the third driving sliding block and the outer end of the third passive sliding block in an opening mode, a third limiting plate located between the third driving sliding block and the third passive sliding block is formed on the side wall of the third passive cavity, and a through hole for the third buffer spring to penetrate through is formed in the third limiting plate; the third movable contact part is arranged at the inner end of the third driven sliding block, the third fixed contact part is arranged on the third fixed block and corresponds to the third movable contact part, an insulation gap is formed between the third movable contact part and the third fixed block, and a third insulation retaining spring is arranged between the inner end of the third driven sliding block and the third fixed block in an opening mode;

the fourth trigger device comprises a fourth cylinder embedded on the side wall of the elevator shaft, a fourth driving device, a fourth driving elastic air bag extruded by the fourth driving device, a fourth driven elastic air bag communicated with the fourth driving elastic air bag, a fourth driving sliding block driven by the fourth driven elastic air bag, a fourth driven sliding block driven by the fourth driving sliding block and bearing the fourth movable contact part, and a fourth fixed block bearing the fourth fixed contact part, wherein the fourth driving device is arranged in the fourth cylinder from the outer end to the inner end in sequence; the fourth cylinder comprises a fourth driving cavity for accommodating the fourth driving device and the fourth driving elastic air bag, and a fourth passive cavity for accommodating the fourth passive elastic air bag, the fourth driving sliding block, the fourth passive sliding block and the fourth fixed block; the fourth driving device comprises a fourth driving sliding block and a fourth extruded block, wherein the fourth driving sliding block is slidably arranged at an outer port of the fourth driving accommodating cavity, and the fourth extruded block is pivoted with the fourth driving sliding block, can be turned over up and down and protrudes out of the side wall of the elevator shaft to enable the elevator car to move downwards and extrude the fourth extruded block; the inner end of the fourth driving sliding block abuts against the outer end of the fourth driving elastic air bag, and the outer end of the fourth driving sliding block comprises two fourth pivoting pieces which extend outwards and are pivoted on two sides of the fourth extruded block and a fourth blocking piece which is connected to the lower sides of the two fourth pivoting pieces and blocks the fourth extruded block from turning downwards to exceed the horizontal plane; a fourth driving inclined plane which is inclined from the inner end to the outer end gradually from top to bottom is formed at the outer end of the fourth extruded block; a fourth communicating channel is formed between the fourth active cavity and the fourth passive cavity, and the cross-sectional area of the fourth communicating channel is smaller than that of the fourth active cavity and that of the fourth passive cavity; the fourth active elastic air bag and the fourth passive elastic air bag are communicated through a fourth air pipeline accommodated in the fourth communicating channel; a fourth deformation cavity corresponding to the side face of the fourth active elastic airbag and used for the fourth active elastic airbag to deform is formed in the side wall of the fourth active cavity, and the fourth deformation cavity is provided with a fourth breathing channel communicated with the outside; the inner end of the fourth passive elastic airbag abuts against the outer end of the fourth driving sliding block, a fourth buffer spring is arranged between the inner end of the fourth driving sliding block and the outer end of the fourth passive sliding block in an expanding mode, a fourth limiting plate located between the fourth driving sliding block and the fourth passive sliding block is formed on the side wall of the fourth passive cavity, and a through hole for the fourth buffer spring to penetrate through is formed in the fourth limiting plate; the fourth movable contact part is arranged at the inner end of the fourth driven sliding block, the fourth fixed contact part is arranged on the fourth fixed block and corresponds to the fourth movable contact part, an insulation gap is formed between the fourth fixed contact part and the fourth movable contact part, and a fourth insulation retaining spring is arranged between the inner end of the fourth driven sliding block and the fourth fixed block in an extending manner; a plurality of fifth ribs which correspond to the first driving sliding block and the first driven sliding block and extend in parallel along the length direction of the first driven cavity are formed on the side wall of the first driven cavity; a plurality of sixth convex edges which correspond to the second driving sliding block and the second driven sliding block and extend in parallel along the length direction of the second driven cavity are formed on the side wall of the second driven cavity; a plurality of seventh ribs which correspond to the third driving sliding block and the third driven sliding block and extend in parallel along the length direction of the third driven cavity are formed on the side wall of the third driven cavity; and a plurality of eighth strip-shaped convex ribs which correspond to the fourth driving sliding block and the fourth driven sliding block and extend in parallel along the length direction of the fourth driven cavity are formed on the side wall of the fourth driven cavity.

The first extruded block is pivoted with the two first pivoting pieces through a first horizontal rotating shaft, the inner end of the first extruded block is a first arc taking a rotating center as a circle center, and the distance from the first horizontal rotating shaft to the first blocking piece is equal to the radius of the first arc; the second extruded block is pivoted with the two second pivoting pieces through a second horizontal rotating shaft, the inner end of the second extruded block is a second circular arc with a rotating center as a circle center, and the distance from the second horizontal rotating shaft to the second blocking piece is equal to the radius of the second circular arc; the third extruded block is pivoted with the two third pivoting pieces through a third horizontal rotating shaft, the inner end of the third extruded block is a third circular arc with a rotating center as a circle center, and the distance from the third horizontal rotating shaft to the third baffle is equal to the radius of the third circular arc; the fourth extruded block is pivoted with the two fourth pivoting pieces through a fourth horizontal rotating shaft, the inner end of the fourth extruded block is a fourth arc taking the rotating center as the center of circle, and the distance from the fourth horizontal rotating shaft to the fourth blocking piece is equal to the radius of the fourth arc.

The cross-sectional area of the first communication channel is 0.05 to 0.2 times of the cross-sectional area of the first active cavity or the first passive cavity, and the cross-sectional areas of the first active cavity and the first passive cavity are equal; the cross-sectional area of the second communication channel is 0.05 to 0.2 times of the cross-sectional area of the second active cavity or the second passive cavity, and the cross-sectional areas of the second active cavity and the second passive cavity are equal; the cross-sectional area of the third communicating channel is 0.05 to 0.2 times of the cross-sectional area of the third active cavity or the third passive cavity, and the cross-sectional areas of the third active cavity and the third passive cavity are equal; the cross-sectional area of the fourth communicating channel is 0.05 to 0.2 times of the cross-sectional area of the fourth active cavity or the fourth passive cavity, and the cross-sectional areas of the fourth active cavity and the fourth passive cavity are equal.

The cross-sectional area of the first communication passage is 0.1 time of that of the first active cavity or the first passive cavity; the cross-sectional area of the second communication channel is 0.1 time of that of the second active cavity or the second passive cavity; the cross-sectional area of the third communicating channel is 0.1 time of that of the third active cavity or the third passive cavity; the cross-sectional area of the fourth communicating channel is 0.1 time of the cross-sectional area of the fourth active cavity or the fourth passive cavity.

The side walls of the first deformation containing cavity, the second deformation containing cavity, the third deformation containing cavity and the fourth deformation containing cavity are all smooth arcs.

The first breathing channel is provided with a first breathing inner port communicated with the first deformation cavity and a first breathing outer port communicated with the outside, and the first breathing inner port is formed at the position, farthest from the first active elastic airbag, of the first deformation cavity; the second breathing passage is provided with a second breathing inner port communicated with the second deformation cavity and a second breathing outer port communicated with the outside, and the second breathing inner port is formed at the position, farthest from the second active elastic airbag, of the second deformation cavity; the third breathing passage is provided with a third breathing inner port communicated with the third deformation cavity and a third breathing outer port communicated with the outside, and the third breathing inner port is formed at the position, farthest from the third active elastic airbag, of the third deformation cavity; the fourth breathing channel is provided with a fourth breathing inner port communicated with the fourth deformation containing cavity and a fourth breathing outer port communicated with the outside, and the fourth breathing inner port is formed at the position, farthest from the fourth deformation containing cavity, of the fourth active elastic air bag.

The first inner breathing port is provided with a first inner end breathable net in a blocking mode, and the first outer breathing port is provided with a first outer end breathable net in a blocking mode; the second inner breathing port is provided with a second inner end breathable net in a blocking mode, and the second outer breathing port is provided with a second outer end breathable net in a blocking mode; the third breathing inner port is provided with a third inner end breathable net in a blocking manner, and the third breathing outer port is provided with a third outer end breathable net in a blocking manner; the fourth breathing inner port is provided with a fourth inner end breathable net, and the fourth breathing outer port is provided with a fourth outer end breathable net.

The more than two first buffer springs are uniformly supported between the inner end of the first driving slide block and the outer end of the first driven slide block; the more than two second buffer springs are uniformly supported between the inner end of the second driving slide block and the outer end of the second driven slide block; the more than two third buffer springs are uniformly supported between the inner end of the third driving slide block and the outer end of the third driven slide block; the more than two fourth buffer springs are uniformly supported between the inner end of the fourth driving slide block and the outer end of the fourth driven slide block;

the more than two first insulation holding springs are uniformly supported between the inner end of the first driven sliding block and the first fixed block; the more than two second insulation holding springs are uniformly supported between the inner end of the second driven sliding block and the second fixed block; the more than two third insulation holding springs are uniformly supported between the inner end of the third driven sliding block and the third fixed block; and more than two fourth insulation holding springs are uniformly supported between the inner end of the fourth driven sliding block and the fourth fixed block.

After the technical scheme is adopted, in the actual use process of the safety elevator, the first switch and the second switch can be triggered to open the outer door when the elevator car moves upwards, and the third switch and the fourth switch can be triggered to open the outer door when the elevator car moves downwards; the first passive elastic airbag is inflated by gas in the first active elastic airbag through a first vent pipe, but the gas in the first active elastic airbag cannot flow into the first passive elastic airbag quickly due to the narrow passage of the first vent pipe, at the moment, the first deformation containing cavity can be used for the first active elastic airbag to deform so as to realize the slow inflation of the first active elastic airbag on the first passive elastic airbag by the first active elastic airbag The first passive elastic air bag gradually swells to extrude and drive the first active sliding block, and the first active sliding block drives the first passive sliding block through the first buffer spring to enable the first passive sliding block to drive the first movable contact part to gradually approach the first fixed contact part on the first fixed block and be in electric contact connection; when the car continues to move upwards and is opposite to the outer door, the lower side of the third extruded block can be touched, the third extruded block can be enabled to turn upwards to avoid the car, meanwhile, the car gradually touches the second driving inclined plane of the second extruded block, due to the fact that the second blocking piece limits the second extruded block, the car can gradually extrude the second extruded block into the second barrel body by means of the second driving inclined plane, the second extruded block can rapidly extrude the second active elastic airbag, the air pressure in the second active elastic airbag is larger than that in the second passive elastic airbag, the air in the second active elastic airbag can inflate the second passive elastic airbag through the second vent pipe, but due to the fact that the second vent pipe is narrow in passage, the air in the second active elastic airbag cannot rapidly flow into the second passive elastic airbag, at the moment, the second deformation accommodating cavity can be used for the second active elastic airbag to deform so as to achieve the effect that the second active elastic airbag slowly inflates the second passive elastic airbag The second passive elastic air bag gradually swells to extrude and drive the second driving sliding block, and the second driving sliding block drives the second driven sliding block through the second buffer spring to enable the second driven sliding block to drive the second movable contact part to gradually approach the second fixed contact part on the second fixed block and be in electric contact connection; wherein the first deformation chamber is used for the first active elastic airbag to deform so as to store the energy of the first active elastic airbag, thereby realizing that the first active elastic airbag slowly inflates the first passive elastic airbag to delay the contact time of the first movable contact part and the first fixed contact part, the second deformation chamber is used for the second active elastic airbag to deform so as to store the energy of the second active elastic airbag, thereby realizing that the second active elastic airbag slowly inflates the second passive elastic airbag to delay the contact time of the second movable contact part and the second fixed contact part, only after the car is fully stopped, the first movable contact part and the first fixed contact part contact to realize the conduction of the first switch, the second movable contact part and the second fixed contact part contact to realize the conduction of the second switch, only when the first switch and the second switch are completely conducted, the door opening circuit is conducted, and the outer door is opened, so that the situation that the floor personnel fall into the elevator shaft carelessly due to the fact that the elevator car is not in place and is stopped stably and the outer door is opened is avoided, and personal safety of the floor personnel is guaranteed; meanwhile, the first deformation cavity can breathe through the first breathing passage, so that the first active elastic air bag can expand and contract to deform conveniently; the second deformation cavity can breathe through a second breathing passage, so that the expansion and contraction deformation of the second active elastic air bag are facilitated; the first buffer spring can buffer the thrust of the first passive elastic air bag, so that the first switch is prevented from being damaged due to overlarge elasticity of the first passive elastic air bag, and the flexible stable closed conduction state of the first movable contact part and the first fixed contact part can be maintained; the second buffer spring can buffer the thrust of the second passive elastic airbag, so that the second switch is prevented from being damaged due to overlarge elasticity of the second passive elastic airbag, and the flexible stable closed and on states of the second movable contact part and the second fixed contact part can be maintained. When the lift car moves downwards to reach a corresponding floor, the lift car touches the upper side of the second extruded block and enables the second extruded block to overturn downwards to avoid the lift car, meanwhile, the lift car gradually touches a third driving inclined plane of a third extruded block, because a third baffle plate limits the third extruded block, the lift car gradually extrudes the third extruded block into a third cylinder body by virtue of the third driving inclined plane, the third extruded block can rapidly extrude a third active elastic air bag, the air pressure in the third active elastic air bag is greater than the air pressure in the third passive elastic air bag, the air in the third active elastic air bag inflates the third passive elastic air bag by virtue of a third vent pipeline, but because the third vent pipeline has a narrow passage, the air in the third active elastic air bag can not rapidly flow into the third passive elastic air bag, at the moment, the third deformation containing cavity can be used for the third active elastic air bag to deform so as to realize that the third active elastic air bag slowly inflates the third passive elastic air bag, the third passive elastic air bag gradually swells to extrude and drive the third driving sliding block, and the third driving sliding block drives the third passive sliding block through a third buffer spring to enable the third passive sliding block to drive the third movable contact part to gradually approach the third fixed contact part on the third fixed block and be in electric contact connection; when the car continues to move downwards and is opposite to the outer door, the upper side of the first extruded block can be touched, the first extruded block can be enabled to turn downwards to avoid the car, meanwhile, the car gradually touches the fourth driving inclined plane of the fourth extruded block, because the fourth blocking piece limits the fourth extruded block, the car can gradually extrude the fourth extruded block into the fourth barrel body by means of the fourth driving inclined plane, the fourth extruded block can quickly extrude the fourth driving elastic airbag, the air pressure in the fourth driving elastic airbag is larger than that in the fourth driven elastic airbag, the air in the fourth driving elastic airbag can inflate the fourth driven elastic airbag through the fourth vent pipe, but because the fourth vent pipe passage is narrow, the air in the fourth driving elastic airbag can not quickly flow into the fourth driven elastic airbag, at the moment, the fourth deformation accommodating cavity can be used for the fourth driving elastic airbag to deform so as to realize that the fourth driving elastic airbag slowly inflates the fourth driven elastic airbag The fourth passive elastic air bag gradually swells to extrude and drive the fourth driving sliding block, and the fourth driving sliding block drives the fourth passive sliding block through a fourth buffer spring to enable the fourth passive sliding block to drive the fourth movable contact part to gradually approach the fourth fixed contact part on the fourth fixed block and to be in electric contact connection; wherein the third deformation chamber is used for the third active elastic airbag to deform to store the energy of the third active elastic airbag, so that the third active elastic airbag slowly inflates the third passive elastic airbag to delay the contact time of the third movable contact part and the third fixed contact part, the fourth deformation chamber is used for the fourth active elastic airbag to deform to store the energy of the fourth active elastic airbag, so that the fourth active elastic airbag slowly inflates the fourth passive elastic airbag to delay the contact time of the fourth movable contact part and the fourth fixed contact part, only after the car is fully stopped, the third movable contact part and the third fixed contact part contact to realize the conduction of a third switch, the fourth movable contact part and the fourth fixed contact part contact to realize the conduction of a fourth switch, and only when the third switch and the fourth switch are completely conducted, the door opening circuit is conducted, and the outer door is opened, so that the situation that the floor personnel fall into the elevator shaft carelessly due to the fact that the elevator car is not in place and is stopped stably and the outer door is opened is avoided, and personal safety of the floor personnel is guaranteed; meanwhile, the third deformation cavity can breathe through a third breathing passage, so that the expansion and contraction deformation of the third active elastic air bag are facilitated; the fourth deformation cavity can breathe through a fourth breathing passage, so that the fourth active elastic air bag can be conveniently expanded and contracted to deform; the third buffer spring can buffer the thrust of the third passive elastic airbag, so that the third switch is prevented from being damaged due to overlarge elasticity of the third passive elastic airbag, and the flexible stable closed and conductive state of the third movable contact part and the third fixed contact part can be maintained; the fourth buffer spring can buffer the thrust of the fourth passive elastic airbag, so that the fourth switch is prevented from being damaged due to overlarge elastic force of the fourth passive elastic airbag, and the flexible stable closed and on states of the fourth movable contact part and the fourth fixed contact part can be maintained. The fifth convex edges can reduce the contact area between the first driving slide block and the first driven slide block and the side wall of the first driven cavity, reduce friction, and the gaps between the adjacent fifth convex edges are beneficial to the discharge and the entrance of air in each space, so that the sliding efficiency of the first driving slide block and the first driven slide block is improved; the sixth convex edges can reduce the contact area between the second driving sliding block and the second driven sliding block and the side wall of the second driven cavity, so that friction is reduced, and gaps between the adjacent sixth convex edges are beneficial to the discharge and the entrance of air in each space, so that the sliding efficiency of the second driving sliding block and the second driven sliding block is improved; the seventh convex edges can reduce the contact area between the third driving slide block and the third driven slide block and the side wall of the third driven cavity, reduce friction, and the gaps between the adjacent seventh convex edges are beneficial to the discharge and the entrance of air in each space, thereby improving the sliding efficiency of the third driving slide block and the third driven slide block; the contact area between the fourth driving sliding block and the fourth driven sliding block as well as the side wall of the fourth driven cavity can be reduced by the eighth strip-shaped convex edges, friction is reduced, and gaps between the adjacent eighth strip-shaped convex edges are beneficial to air discharge and air entry in each space, so that the sliding efficiency of the fourth driving sliding block and the fourth driven sliding block is improved. The further structure can be that fifth strip bead, sixth strip bead, seventh strip bead and eighth strip bead extend to the surface of first limiting plate, second limiting plate, third limiting plate and fourth limiting plate respectively, the circulation of the gas of being convenient for more. Compared with the prior art, the safety elevator disclosed by the invention has the advantages that the outer door can be delayed to be opened, the outer door can be opened only when the car is stopped stably, the floor personnel are effectively prevented from falling into the elevator shaft carelessly, the personal safety of the floor personnel is ensured, the structure is novel and reasonable, and the practicability is high.

Drawings

FIG. 1 is a first partial schematic of the present invention;

FIG. 2 is a first partial cross-sectional structural view of the present invention in use;

FIG. 3 is a first partial cross-sectional structural schematic view of the present invention;

FIG. 4 is a second partial cross-sectional structural schematic of the present invention;

FIG. 5 is a third partial cross-sectional structural view of the present invention;

FIG. 6 is a second partial structural view of the present invention;

FIG. 7 is a third partial structural view of the present invention;

fig. 8 is a schematic circuit structure of the present invention.

Detailed Description

In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.

The safety elevator of the invention, as shown in fig. 1-8, comprises a car 1 with an inner door and an outer door 91 arranged on a corresponding floor of an elevator shaft 9, wherein the outer door 91 is provided with a motor 2 for driving the outer door 91 to open.

The outer door 91 is provided with a door opener, the door opener comprises a door opening circuit, a door opening switch 3 for conducting and controlling the door opening circuit, and a trigger device for triggering the door opening switch 3 to conduct and open the outer door 91; the door opening circuit comprises a main lead line 4 for communicating a power supply and the motor 2, wherein the main lead line 4 comprises a first lead branch 41 and a second lead branch 42 which are connected in parallel; the door-opening switch 3 includes a first switch 31 and a second switch 32 which are connected in series in the first conductor branch 41 for conduction control, and a third switch 33 and a fourth switch 34 which are connected in series in the second conductor branch 42 for conduction control; the triggering devices comprise a first triggering device 5 for driving the car 1 upwards to trigger the first switch 31 and a second triggering device 6 for triggering the second switch 32, and a third triggering device 7 for driving the car 1 downwards to trigger the third switch 33 and a fourth triggering device 8 for triggering the fourth switch 34; the first switch 31 comprises a first fixed contact member 311 and a first moving contact member 312 which are mated, the second switch 32 comprises a second fixed contact member 321 and a second moving contact member 322 which are mated, the third switch 33 comprises a third fixed contact member 331 and a third moving contact member 332 which are mated, and the fourth switch 34 comprises a fourth fixed contact member 341 and a fourth moving contact member 342 which are mated; the first triggering device 5 is arranged on the side wall of the elevator shaft 9 and corresponds to the lower part level of the outer door 91, the second triggering device 6 is arranged on the side wall of the elevator shaft 9 and corresponds to the upper part level of the outer door 91, the third triggering device 7 is arranged on the side wall of the elevator shaft 9 and corresponds to the upper part level of the outer door 91, and the fourth triggering device 8 is arranged on the side wall of the elevator shaft 9 and corresponds to the lower part level of the outer door 91; the first trigger device 5 comprises a first cylinder 51 embedded on the side wall of the elevator shaft 9, a first driving device 52 arranged in the first cylinder 51 from the outer end to the inner end in sequence, a first active elastic air bag 53 extruded by the first driving device 52, a first passive elastic air bag 54 communicated with the first active elastic air bag 53, a first active slide block 55 driven by the first passive elastic air bag 54, a first passive slide block 56 driven by the first active slide block 55 and bearing a first movable contact part 311, and a first fixed block 57 bearing a first fixed contact part 312; the first barrel 51 comprises a first active cavity 511 for accommodating the first driving device 52 and the first active elastic airbag 53, and a first passive cavity 512 for accommodating the first passive elastic airbag 54, the first active slider 55, the first passive slider 56 and the first fixing block 57; the first driving device 52 comprises a first driving slider 521 slidably arranged at an outer port of the first driving accommodating cavity 511, and a first extruded block 522 which is pivoted with the first driving slider 521, can be turned over up and down and protrudes out of the sidewall of the elevator shaft 9 for extruding the elevator car 1 to move upwards; the inner end of the first driving sliding block 521 abuts against the outer end of the first active elastic air bag 53, and the outer end of the first driving sliding block 521 comprises two first pivoting pieces which extend outwards and are pivoted at two sides of the first extruded block 522 and a first blocking piece which is connected to the upper sides of the two first pivoting pieces and blocks the first extruded block 522 from turning upwards and exceeding the horizontal plane; a first driving inclined surface 5221 which is gradually inclined from the inner end to the outer end from bottom to top is formed at the outer end of the first pressed block 522; a first communicating channel is formed between the first active volume 511 and the first passive volume 512, the cross-sectional area of the first communicating channel being smaller than the cross-sectional areas of the first active volume 511 and the first passive volume 512; the first active elastic airbag 53 and the first passive elastic airbag 54 are communicated through a first vent pipe 58 accommodated in the first communication passage; a first deformation cavity 5111 corresponding to the side surface of the first active elastic airbag 53 and allowing the first active elastic airbag 53 to deform is formed in the side wall of the first active cavity 511, and the first deformation cavity 5111 is provided with a first breathing passage 51111 communicated with the outside; the inner end of the first passive elastic airbag 54 abuts against the outer end of the first active slider 55, a first buffer spring 59 is arranged between the inner end of the first active slider 55 and the outer end of the first passive slider 56 in an extending manner, a first limiting plate 5121 positioned between the first active slider 55 and the first passive slider 56 is formed on the side wall of the first passive cavity 512, and a through hole for the first buffer spring 59 to pass through is formed on the first limiting plate 5121; the first moving contact part 311 is arranged at the inner end of the first driven slide block 56, the first fixed contact part 312 is arranged on the first fixed block 57 and corresponds to the first moving contact part 311, an insulation gap is arranged between the first moving contact part 311 and the first fixed block 57, and a first insulation holding spring 50 is arranged between the inner end of the first driven slide block 56 and the first fixed block 57 in an extending manner; the second trigger device 6 comprises a second cylinder 61 embedded on the side wall of the elevator shaft 9, a second driving device 62 arranged in the second cylinder 61 from the outer end to the inner end in sequence, a second active elastic air bag 63 extruded by the second driving device 62, a second passive elastic air bag 64 communicated with the second active elastic air bag 63, a second active sliding block 65 driven by the second passive elastic air bag 64, a second passive sliding block 66 driven by the second active sliding block 65 and bearing a second movable contact point component 321, and a second fixed block 67 bearing a second fixed contact point component 322; the second cylinder 61 comprises a second active cavity 611 for accommodating the second driving device 62 and the second active elastic airbag 63, and a second passive cavity 612 for accommodating the second passive elastic airbag 64, the second active sliding block 65, the second passive sliding block 66 and the second fixing block 67; the second driving device 62 comprises a second driving slider 621 slidably disposed at an outer port of the second driving accommodating cavity 611, and a second pressed block 622 pivotally connected to the second driving slider 621, capable of being turned over up and down, and protruding out of a sidewall of the elevator shaft 9 for pressing the car 1 to move upward; the inner end of the second driving sliding block 621 abuts against the outer end of the second active elastic air bag 63, and the outer end of the second driving sliding block 621 comprises two second pivoting pieces which extend outwards and are pivoted to two sides of the second extruded block 622 and a second blocking piece which is connected to the upper sides of the two second pivoting pieces and blocks the second extruded block 622 from turning upwards and exceeding the horizontal plane; a second driving inclined surface 6221 which is gradually inclined from the inner end to the outer end is formed at the outer end of the second extruded block 622; a second communication channel is formed between the second active cavity 611 and the second passive cavity 612, and the cross-sectional area of the second communication channel is smaller than the cross-sectional areas of the second active cavity 611 and the second passive cavity 612; the second active elastic airbag 63 and the second passive elastic airbag 64 are communicated through a second vent pipe 68 accommodated in the second communication passage; a second deformation cavity 6111 corresponding to the side surface of the second active elastic airbag 63 and used for deformation of the second active elastic airbag 63 is formed in the side wall of the second active cavity 611, and the second deformation cavity 6111 is provided with a second breathing channel 61111 communicated with the outside; the inner end of the second passive elastic airbag 64 abuts against the outer end of the second active slider 65, a second buffer spring 69 is arranged between the inner end of the second active slider 65 and the outer end of the second passive slider 66, a second limit plate 6121 positioned between the second active slider 65 and the second passive slider 66 is formed on the side wall of the second passive accommodating cavity 612, and a through hole for the second buffer spring 69 to pass through is formed in the second limit plate 6121; the second moving contact part 321 is arranged at the inner end of the second driven slide block 66, the second fixed contact part 322 is arranged on the second fixed block 67 and corresponds to the second moving contact part 321, an insulation gap is arranged between the second fixed contact part and the second moving contact part 321, and a second insulation holding spring 60 is arranged between the inner end of the second driven slide block 66 and the second fixed block 67 in an extending manner; the third triggering device 7 comprises a third cylinder 71 embedded in the sidewall of the elevator shaft 9, a third driving device 72 arranged in the third cylinder 71 from the outer end to the inner end in sequence, a third active elastic airbag 73 extruded by the third driving device 72, a third passive elastic airbag 74 communicated with the third active elastic airbag 73, a third active slider 75 driven by the third passive elastic airbag 74, a third passive slider 76 driven by the third active slider 75 and carrying a third moving contact part 331, and a third fixed block 77 carrying a third fixed contact part 332; the third cylinder 71 comprises a third active cavity 711 accommodating the third driving device 72 and the third active elastic airbag 73, and a third passive cavity 712 accommodating the third passive elastic airbag 74, the third active slider 75, the third passive slider 76 and the third fixing block 77; the third driving device 72 comprises a third driving slider 721 slidably arranged at an outer port of the third driving cavity 711, and a third extruded block 722 pivoted with the third driving slider 721, capable of being turned over up and down, protruding out of the sidewall of the elevator shaft 9 and extruded by the downward movement of the car 1; the inner end of the third driving sliding block 721 abuts against the outer end of the third active elastic airbag 73, and the outer end of the third driving sliding block 721 comprises two third pivoting pieces which extend outwards and are pivoted at two sides of the third extruded block 722 and a third blocking piece which is connected to the lower sides of the two third pivoting pieces and blocks the third extruded block 722 from turning downwards to exceed the horizontal plane; a third driving inclined plane 7221 which is inclined from the inner end to the outer end gradually is formed at the outer end of the third extruded block 722; a third communicating channel is formed between the third active volume 711 and the third passive volume 712, and the cross-sectional area of the third communicating channel is smaller than the cross-sectional areas of the third active volume 711 and the third passive volume 712; the third active elastic airbag 73 and the third passive elastic airbag 74 are communicated through a third vent pipe 78 accommodated in the third communication passage; a third deformation cavity 7111 corresponding to the side face of the third active elastic airbag 73 and used for deformation of the third active elastic airbag 73 is formed in the side wall of the third active cavity 711, and the third deformation cavity 7111 is provided with a third breathing channel 71111 communicated with the outside; the inner end of the third passive elastic air bag 74 abuts against the outer end of the third active slider 75, a third buffer spring 79 is arranged between the inner end of the third active slider 75 and the outer end of the third passive slider 76, a third limiting plate 7121 located between the third active slider 75 and the third passive slider 76 is formed on the side wall of the third passive cavity 712, and a through hole for the third buffer spring 79 to pass through is formed in the third limiting plate 7121; the third moving contact part 331 is arranged at the inner end of the third driven slide block 76, the third fixed contact part 332 is arranged on the third fixed block 77 and corresponds to the third moving contact part 331, an insulation gap is formed between the third moving contact part 331 and the third fixed block 77, and a third insulation holding spring 70 is arranged between the inner end of the third driven slide block 76 and the third fixed block 77; the fourth triggering device 8 comprises a fourth cylinder 81 embedded on the sidewall of the elevator shaft 9, a fourth driving device 82 arranged in the fourth cylinder 81 in sequence from the outer end to the inner end, a fourth driving elastic air bag 83 extruded by the fourth driving device 82, a fourth driven elastic air bag 84 communicated with the fourth driving elastic air bag 83, a fourth driving sliding block 85 driven by the fourth driven elastic air bag 84, a fourth driven sliding block 86 driven by the fourth driving sliding block 85 and bearing the fourth moving contact part 341, and a fourth fixed block 87 bearing the fourth fixed contact part 342; the fourth cylinder 81 comprises a fourth active cavity 811 for accommodating the fourth driving device 82 and the fourth active elastic air bag 83, and a fourth passive cavity 812 for accommodating the fourth passive elastic air bag 84, the fourth driving slide block 85, the fourth passive slide block 86 and the fourth fixing block 87; the fourth driving device 82 comprises a fourth driving slider 821 arranged at an outer port of the fourth driving accommodating cavity 811 in a sliding manner, and a fourth extruded block 822 pivoted with the fourth driving slider 821, capable of being turned over up and down and protruding out of the side wall of the elevator shaft 9 for extruding the elevator car 1 to move downwards; the inner end of the fourth driving slider 821 abuts against the outer end of the fourth driving elastic air bag 83, and the outer end of the fourth driving slider 821 includes two fourth pivoting pieces extending outwards and pivoted to two sides of the fourth extruded block 822 and a fourth blocking piece connected to the lower sides of the two fourth pivoting pieces to block the fourth extruded block 822 from turning downwards and exceeding the horizontal plane; a fourth driving inclined surface 8221 which is gradually inclined from the inner end to the outer end is formed at the outer end of the fourth extruded block 822 from top to bottom; a fourth communicating channel is formed between the fourth active volume 811 and the fourth passive volume 812, and the cross-sectional area of the fourth communicating channel is smaller than the cross-sectional areas of the fourth active volume 811 and the fourth passive volume 812; the fourth active elastic airbag 83 and the fourth passive elastic airbag 84 are communicated with each other through a fourth vent pipe 88 accommodated in the fourth communication passage; a fourth deformation cavity 8111 corresponding to the side surface of the fourth active elastic airbag 83 and used for deformation of the fourth active elastic airbag 83 is formed in the side wall of the fourth active cavity 811, and the fourth deformation cavity 8111 is provided with a fourth breathing passage 81111 communicated with the outside; the inner end of the fourth passive elastic airbag 84 abuts against the outer end of the fourth active slider 85, a fourth buffer spring 89 is arranged between the inner end of the fourth active slider 85 and the outer end of the fourth passive slider 86 in an expanded manner, a fourth limiting plate 8121 located between the fourth active slider 85 and the fourth passive slider 86 is formed on the side wall of the fourth passive cavity 812, and a through hole for the fourth buffer spring 89 to pass through is formed in the fourth limiting plate 8121; the fourth moving contact member 341 is provided at the inner end of the fourth driven slider 86, the fourth fixed contact member 342 is provided on the fourth fixed block 87 in correspondence to the fourth moving contact member 341 with an insulation gap therebetween, and the fourth insulation holding spring 80 is stretched between the inner end of the fourth driven slider 86 and the fourth fixed block 87. In the practical use process of the invention, the upward movement of the car 1 can trigger the first switch 31 and the second switch 32 to open the outer door 91, and the downward movement of the car 1 can trigger the third switch 33 and the fourth switch 34 to open the outer door 91; specifically, when the car 1 moves upwards and reaches the corresponding floor, the car 1 touches the lower side of the fourth extruded block 822 and turns the fourth extruded block 822 upwards to escape from the car 1, and simultaneously the car 1 gradually touches the first driving inclined surface 5221 of the first extruded block 522, because the first baffle plate limits the first extruded block 522, the car 1 gradually presses the first extruded block 522 towards the first cylinder 51 by means of the first driving inclined surface 5221, the first extruded block 522 quickly presses the first active elastic airbag 53, the air pressure in the first active elastic airbag 53 is greater than the air pressure in the first passive elastic airbag 54, the air in the first active elastic airbag 53 inflates the first passive elastic airbag 54 through the first ventilation pipe 58, but because the first ventilation pipe 58 has a narrow passage, the air in the first active elastic airbag 53 cannot quickly flow into the first passive elastic airbag 54, at this time, the first deformation cavity 5111 may allow the first active elastic airbag 53 to deform so as to realize that the first active elastic airbag 53 slowly inflates the first passive elastic airbag 54, the first passive elastic airbag 54 gradually swells to extrude and drive the first active slider 55, and the first active slider 55 drives the first passive slider 56 through the first buffer spring 59 so that the first passive slider 56 drives the first moving contact part 311 to gradually approach the first fixed contact part 312 on the first fixed block 57 and to be in electric contact connection; when the car 1 continues to move upwards and is opposite to the outer door 91, the car 1 touches the lower side of the third extruded block 722 and turns the third extruded block 722 upwards to get out of the car 1, meanwhile, the car 1 gradually touches the second driving inclined surface 6221 of the second extruded block 622, due to the limitation of the second baffle plate on the second extruded block 622, the car 1 gradually presses the second extruded block 622 into the second cylinder 61 by means of the second driving inclined surface 6221, the second extruded block 622 quickly presses the second active elastic airbag 63, the air pressure in the second active elastic airbag 63 is greater than the air pressure in the second passive elastic airbag 64, the air in the second active elastic airbag 63 inflates the second passive elastic airbag 64 through the second vent pipe 68, but because the second vent pipe 68 has a narrow passage, the air in the second active elastic airbag 63 cannot quickly flow into the second passive elastic airbag 64, at this time, the second deformation cavity 6111 may allow the second active elastic airbag 63 to deform so as to realize that the second active elastic airbag 63 slowly inflates the second passive elastic airbag 64, the second passive elastic airbag 64 gradually swells to extrude and drive the second active slider 65, and the second active slider 65 drives the second passive slider 66 through the second buffer spring 69 so that the second passive slider 66 drives the second moving contact component 321 to gradually approach the second fixed contact component 322 on the second fixed block 67 and to be in electric contact connection; wherein the first deformation chamber 5111 is used for the first active elastic airbag 53 to deform to store the energy of the first active elastic airbag 53, so that the first active elastic airbag 53 slowly inflates the first passive elastic airbag 54 to delay the time of the contact between the first moving contact part 311 and the first fixed contact part 312, the second deformation chamber 6111 is used for the second active elastic airbag 63 to deform to store the energy of the second active elastic airbag 63, so that the second active elastic airbag 63 slowly inflates the second passive elastic airbag 64 to delay the time of the contact between the second moving contact part 321 and the second fixed contact part 322, only after the car 1 is fully stabilized, the first moving contact part 311 and the first fixed contact part 312 contact to realize the conduction of the first switch 31, and the second moving contact part 321 and the second fixed contact part 322 contact to realize the conduction of the second switch 32, only when the first switch 31 and the second switch 32 are completely conducted, the door opening circuit is conducted, the outer door 91 is opened, the situation that the elevator car 1 is not positioned and stably stopped and the outer door 91 is opened to cause floor personnel to fall into the elevator shaft 9 carelessly is avoided, and the personal safety of the floor personnel is ensured; meanwhile, the first deformation cavity 5111 can breathe through the first breathing passage 51111, so that the first active elastic air bag 53 can be conveniently expanded and contracted to deform; the second deformation cavity 6111 can breathe through the second breathing passage 61111, which facilitates the expansion and contraction deformation of the second active elastic airbag 63; the first buffer spring 59 can buffer the thrust of the first passive elastic airbag 54, so as to avoid the first switch 31 from being damaged due to the overlarge elastic force of the first passive elastic airbag 54, and maintain the flexible stable closed conducting state of the first movable contact part 311 and the first fixed contact part 312; the second buffer spring 69 can buffer the pushing force of the second passive elastic airbag 64, so as to prevent the second switch 32 from being damaged due to the excessive elastic force of the second passive elastic airbag 64, and maintain the flexible and stable closed and conductive state of the second movable contact part 321 and the second fixed contact part 322. When the car 1 moves downwards to reach the corresponding floor, the upper side of the second extruded block 622 is touched, the second extruded block 622 is enabled to turn downwards to avoid the car 1, meanwhile, the car 1 gradually touches the third driving inclined surface 7221 of the third extruded block 722, due to the limitation of the third baffle plate on the third extruded block 722, the car 1 gradually presses the third extruded block 722 into the third cylinder 71 by means of the third driving inclined surface 7221, the third extruded block 722 can quickly press the third active elastic airbag 73, the air pressure in the third active elastic airbag 73 is greater than that in the third passive elastic airbag 74, the air in the third active elastic airbag 73 can inflate the third passive elastic airbag 74 through the third vent pipe 78, but because the passage of the third vent pipe 78 is narrow, the air in the third active elastic airbag 73 can not quickly flow into the third passive elastic airbag 74, at this time, the third deformation cavity 7111 may allow the third active elastic airbag 73 to deform so as to slowly inflate the third passive elastic airbag 74 by the third active elastic airbag 73, the third passive elastic airbag 74 gradually swells to extrude and drive the third active slider 75, and the third active slider 75 drives the third passive slider 76 through the third buffer spring 79, so that the third passive slider 76 drives the third moving contact part 331 to gradually approach the third fixed contact part 332 on the third fixed block 77 and to be in electrical contact connection; when the car 1 continues to move downwards and is opposite to the outer door 91, the car 1 touches the upper side of the first extruded block 522 and enables the first extruded block 522 to turn downwards to avoid the car 1, meanwhile, the car 1 gradually touches the fourth driving inclined plane 8221 of the fourth extruded block 822, due to the limitation of the fourth blocking piece on the fourth extruded block 822, the car 1 gradually presses the fourth extruded block 822 into the fourth cylinder 81 by means of the fourth driving inclined plane 8221, the fourth extruded block 822 can quickly press the fourth active elastic airbag 83, the air pressure in the fourth active elastic airbag 83 is greater than that in the fourth passive elastic airbag 84, the air in the fourth active elastic airbag 83 inflates the fourth passive elastic airbag 84 through the fourth vent pipe 88, but because the fourth vent pipe 88 has a narrow passage, the air in the fourth active elastic airbag 83 cannot quickly flow into the fourth passive elastic airbag 84, at this time, the fourth deformation cavity 8111 may be used for the fourth active elastic airbag 83 to deform so as to realize that the fourth active elastic airbag 83 slowly inflates the fourth passive elastic airbag 84, the fourth passive elastic airbag 84 gradually swells to extrude and drive the fourth active slider 85, and the fourth active slider 85 drives the fourth passive slider 86 through the fourth buffer spring 89 so that the fourth passive slider 86 drives the fourth moving contact part 341 to gradually approach the fourth fixed contact part 342 on the fourth fixed block 87 and to be in electric contact connection; the third deformation cavity 7111 is used for the third active elastic airbag 73 to deform so as to store the energy of the third active elastic airbag 73, so that the third active elastic airbag 73 slowly inflates the third passive elastic airbag 74 to delay the time of the contact between the third moving contact part 331 and the third fixed contact part 332, the fourth deformation cavity 8111 is used for the fourth active elastic airbag 83 to deform so as to store the energy of the fourth active elastic airbag 83, so that the fourth active elastic airbag 83 slowly inflates the fourth passive elastic airbag 84 to delay the time of the contact between the fourth moving contact part 341 and the fourth fixed contact part 342, only after the car 1 is fully stabilized, the third moving contact part 331 and the third fixed contact part 332 contact to realize the conduction of the third switch 33, and the fourth moving contact part 341 and the fourth fixed contact part 342 contact to realize the conduction of the fourth switch 34, only when the third switch 33 and the fourth switch 34 are completely switched on, the door opening circuit is switched on, the outer door 91 is opened, the situation that the elevator car 1 is not positioned and stably stopped and the outer door 91 is opened to cause the floor personnel to fall into the elevator shaft 9 carelessly can not occur, and the personal safety of the floor personnel is ensured; meanwhile, the third deformation cavity 7111 can breathe through the third breathing passage 71111, so that the expansion and contraction deformation of the third active elastic air bag 73 are facilitated; the fourth deformation cavity 8111 can breathe through the fourth breathing passage 81111, so as to facilitate the expansion and contraction deformation of the fourth active elastic airbag 83; the third buffer spring 79 can buffer the thrust of the third passive elastic airbag 74, so as to prevent the third switch 33 from being damaged due to the overlarge elastic force of the third passive elastic airbag 74, and maintain the flexible stable closed and conductive state of the third movable contact part 331 and the third fixed contact part 332; the fourth buffer spring 89 can buffer the thrust of the fourth passive elastic airbag 84, prevent the fourth switch 34 from being damaged due to the excessive elastic force of the fourth passive elastic airbag 84, and maintain the flexible and stable closed and conductive state of the fourth moving contact part 341 and the fourth fixed contact part 342.

Preferably, a plurality of first linear protruding ribs 5112 corresponding to the first driving slider 521 and extending in parallel along the length direction of the first driving cavity 511 are formed on the side wall of the first driving cavity 511 near the outer end; a plurality of second strip-shaped ribs 6112 which correspond to the second driving slider 621 and extend in parallel along the length direction of the second active cavity 611 are formed on the side wall of the second active cavity 611 close to the outer end; a plurality of third strip-shaped convex ribs 7112 which correspond to the third driving slide block 721 and extend in parallel along the length direction of the third driving cavity 711 are formed on the side wall of the third driving cavity 711 near the outer end; a plurality of fourth ribs corresponding to the fourth driving slider 821 and extending in parallel along the length direction of the fourth driving cavity 811 are formed on the side wall of the fourth driving cavity 811 near the outer end. In the practical use process of the invention, the first strip-shaped protruding edge 5112 can reduce the contact area between the first driving slider 521 and the side wall of the first active cavity 511, so as to reduce friction, and the gap between the adjacent first strip-shaped protruding edges 5112 is beneficial to the discharge and the entry of air in the gap between the first driving slider 521 and the first active elastic air bag 53, so as to improve the sliding efficiency of the first driving slider 521; the second strip-shaped protruding edge 6112 can reduce the contact area between the second driving slider 621 and the side wall of the second active accommodating cavity 611, so as to reduce friction, and the gap between the adjacent second strip-shaped protruding edges 6112 is beneficial to the discharge and the entry of air in the gap between the second driving slider 621 and the second active elastic air bag 63, so that the sliding efficiency of the second driving slider 621 is improved; the third strip-shaped protruding ribs 7112 can reduce the contact area between the third driving slider 721 and the side wall of the third driving cavity 711, reduce friction, and the gap between the adjacent third strip-shaped protruding ribs 7112 is beneficial to the discharge and the entrance of air in the gap between the third driving slider 721 and the third driving elastic air bag 73, so that the sliding efficiency of the third driving slider 721 is improved; the fourth rib 8112 can reduce the contact area between the fourth driving slider 821 and the sidewall of the fourth active cavity 811, so as to reduce friction, and the gap between the adjacent fourth ribs 8112 is favorable for the air in the gap between the fourth driving slider 821 and the fourth active elastic air bag 83 to be discharged and entered, so as to improve the sliding efficiency of the fourth driving slider 821.

Preferably, the sidewall of the first passive cavity 512 is formed with a plurality of fifth ribs 5122 corresponding to the first active slider 55 and the first passive slider 56 and extending in parallel along the length direction of the first passive cavity 512; a plurality of sixth ribs 6122 corresponding to the second driving slider 65 and the second driven slider 66 and extending in parallel along the length direction of the second driven cavity 612 are formed on the side wall of the second driven cavity 612; a plurality of seventh ribs 7122 corresponding to the third driving slider 75 and the third driven slider 76 and extending in parallel along the length direction of the third driven cavity 712 are formed on the side wall of the third driven cavity 712; the sidewall of the fourth passive cavity 812 is formed with a plurality of eighth rib-shaped ribs 8122 corresponding to the fourth active slider 85 and the fourth passive slider 86 and extending in parallel along the length direction of the fourth passive cavity 812. In the practical use process of the invention, the fifth rib 5122 can reduce the contact area between the first driving slider 55 and the first driven slider 56 and the side wall of the first driven cavity 512, so as to reduce friction, and the gap between the adjacent fifth ribs 5122 is beneficial to the discharge and the entry of air in each space, so as to improve the sliding efficiency of the first driving slider 55 and the first driven slider 56; the sixth ribs 6122 can reduce the contact area between the second driving slider 65 and the second driven slider 66 and the side wall of the second driven cavity 612, reduce friction, and the gaps between the adjacent sixth ribs 6122 are beneficial to the discharge and the entrance of air in each space, so that the sliding efficiency of the second driving slider 65 and the second driven slider 66 is improved; the seventh protruding ribs 7122 can reduce the contact area between the third driving slider 75 and the third driven slider 76 and the side wall of the third driven cavity 712, reduce friction, and the gaps between the adjacent seventh protruding ribs 7122 are beneficial to the discharge and the entrance of air in each space, so that the sliding efficiency of the third driving slider 75 and the third driven slider 76 is improved; the contact area between the fourth driving slider 85 and the fourth driven slider 86 and the side wall of the fourth driven cavity 812 can be reduced by the eighth rib 8122, so that friction is reduced, and the gap between the adjacent eighth ribs 8122 is beneficial to the discharge and the entrance of air in each space, thereby improving the sliding efficiency of the fourth driving slider 85 and the fourth driven slider 86. The further structure can be that the fifth rib 5122, the sixth rib 6122, the seventh rib 7122 and the eighth rib 8122 extend to the surfaces of the first limiting plate 5121, the second limiting plate 6121, the third limiting plate 7121 and the fourth limiting plate 8121 respectively, which is more convenient for the circulation of air.

Preferably, the first extruded block 522 is pivoted with the two first pivoting pieces through a first horizontal rotating shaft, the inner end of the first extruded block 522 is a first arc taking the rotating center as the center of circle, and the distance from the first horizontal rotating shaft to the first blocking piece is equal to the radius of the first arc; the second extruded block 622 is pivoted with the two second pivoting pieces through a second horizontal rotating shaft, the inner end of the second extruded block 622 is a second circular arc with the rotating center as the center of circle, and the distance from the second horizontal rotating shaft to the second blocking piece is equal to the radius of the second circular arc; the third extruded block 722 is pivoted with the two third pivoting pieces through a third horizontal rotating shaft, the inner end of the third extruded block 722 is a third circular arc with the rotating center as the center of circle, and the distance from the third horizontal rotating shaft to the third blocking piece is equal to the radius of the third circular arc; the fourth squeezed block 822 is pivoted with the two fourth pivoting pieces through a fourth horizontal rotating shaft, the inner end of the fourth squeezed block 822 is a fourth arc taking the rotating center as the center of circle, and the distance from the fourth horizontal rotating shaft to the fourth blocking piece is equal to the radius of the fourth arc. In the practical use process of the invention, the first extruded block 522 can rotate through the first horizontal rotating shaft, so that the first arc at the inner end can slide stably and compactly relative to the first baffle plate, and mutual influence can not be caused; the second extruded block 622 can rotate through the second horizontal rotating shaft, so that the second arc at the inner end can slide stably and compactly relative to the second baffle, and mutual influence cannot be caused; the third extruded block 722 can rotate through a third horizontal rotating shaft, so that a third arc at the inner end can slide stably and compactly relative to the third baffle plate, and mutual influence cannot be caused; the fourth extruded block 822 can rotate through the fourth horizontal rotating shaft, so that the fourth arc at the inner end can slide relative to the fourth baffle plate stably and compactly without mutual influence.

In order to realize the size fit relationship between each communication channel and each active cavity and passive cavity and ensure the time delay of the air flow, preferably, the cross-sectional area of the first communication channel is between 0.05 and 0.2 times of the cross-sectional area of the first active cavity 511 or the first passive cavity 512, and the cross-sectional areas of the first active cavity 511 and the first passive cavity 512 are equal; the cross-sectional area of the second communication passage is 0.05 to 0.2 times the cross-sectional area of the second active volume 611 or the second passive volume 612, and the cross-sectional areas of the second active volume 611 and the second passive volume 612 are equal; the cross-sectional area of the third communicating passage is between 0.05 and 0.2 times the cross-sectional area of the third active volume 711 or the third passive volume 712, and the cross-sectional areas of the third active volume 711 and the first passive volume 712 are equal; the cross-sectional area of the fourth communicating channel is between 0.05 and 0.2 times the cross-sectional area of the fourth active volume 811 or the fourth passive volume 812, and the cross-sectional areas of the fourth active volume 811 and the fourth passive volume 812 are equal. In the process of the practical use of the invention,

preferably, the cross-sectional area of the first communicating channel is 0.1 times the cross-sectional area of the first active volume 511 or the first passive volume 512; the cross-sectional area of the second communicating channel is 0.1 times the cross-sectional area of the second active volume 611 or the second passive volume 612; the cross-sectional area of the third communicating channel is 0.1 times the cross-sectional area of the third active volume 711 or the third passive volume 712; the cross-sectional area of the fourth communicating channel is 0.1 times the cross-sectional area of the fourth active volume 811 or the fourth passive volume 812.

Preferably, the side walls of the first deformation volume 5111, the second deformation volume 6111, the third deformation volume 7111 and the fourth deformation volume 8111 are all smooth arcs. In the practical use process, when the first active elastic airbag 53, the second active elastic airbag 63, the third active elastic airbag 73 and the fourth active elastic airbag 83 are deformed and enter the first deformation cavity 5111, the second deformation cavity 6111, the third deformation cavity 7111 and the fourth deformation cavity 8111 respectively, relative sliding occurs, and the smooth arc-shaped first deformation cavity 5111, the second deformation cavity 6111, the third deformation cavity 7111 and the fourth deformation cavity 8111 cannot cause scratch and other damages to the first active elastic airbag 53, the second active elastic airbag 63, the third active elastic airbag 73 and the fourth active elastic airbag 83, so that the long-term stable work of the first active elastic airbag 53, the second active elastic airbag 63, the third active elastic airbag 73 and the fourth active elastic airbag 83 is ensured.

Preferably, the first breathing passage 51111 has a first breathing inner port communicating with the first deformation volume 5111 and a first breathing outer port communicating with the outside, the first breathing inner port being formed where the first deformation volume 5111 is farthest from the first active elastic balloon 53; the second breathing passage 61111 has a second breathing inner port communicated with the second deformation cavity 6111 and a second breathing outer port communicated with the outside, and the second breathing inner port is formed at the position where the second deformation cavity 6111 is farthest away from the second active elastic airbag 63; the third breathing channel 71111 has a third breathing inner port communicated with the third deformation cavity 7111 and a third breathing outer port communicated with the outside, and the third breathing inner port is formed at the position where the third deformation cavity 7111 is farthest away from the third active elastic airbag 73; the fourth breathing passage 81111 has a fourth breathing inner port communicating with the fourth deformation volume 8111 and a fourth breathing outer port communicating with the outside, the fourth breathing inner port being formed at the position where the fourth deformation volume 8111 is farthest from the fourth active elastic balloon 83. In the practical use process, the first breathing inner port is positioned at the position farthest away from the first active elastic air bag 53, and the first breathing inner port is blocked after the first active elastic air bag 53 is completely deformed to fill the whole first deformation containing cavity 5111, so that the structure can fully discharge the air in the first deformation containing cavity 5111 and fully inflate the first deformation containing cavity 5111, and the breathing effect of the first deformation containing cavity 5111 is facilitated; the second breathing inner port is located at the position farthest from the second active elastic airbag 63, and the second breathing inner port is blocked only after the second active elastic airbag 63 is completely deformed and fills the whole second deformation cavity 6111, so that the structure can fully discharge the air in the second deformation cavity 6111 and fully inflate the second deformation cavity 6111, and the breathing effect of the second deformation cavity 6111 is facilitated; the third breathing inner port is located at the position farthest from the third active elastic air bag 73, and the third breathing inner port is blocked only after the third active elastic air bag 73 is completely deformed and fills the whole third deformation containing cavity 7111, so that the structure can fully discharge the air in the third deformation containing cavity 7111 and fully inflate the third deformation containing cavity 7111, and the breathing action of the third deformation containing cavity 7111 is facilitated; the fourth breathing inner port is located at the position farthest away from the fourth active elastic airbag 83, and the fourth breathing inner port is blocked only after the fourth active elastic airbag 83 is completely deformed and fills the whole fourth deformation containing cavity 8111, so that the structure can fully discharge the air in the fourth deformation containing cavity 8111 and fully inflate the fourth deformation containing cavity 8111, and the breathing effect of the fourth deformation containing cavity 8111 is facilitated.

Preferably, the first breathing inner port block is provided with a first inner end breathable net a1, and the first breathing outer port block is provided with a first outer end breathable net a 2; the second breathing inner port is provided with a second inner end breathable net b1, and the second breathing outer port is provided with a second outer end breathable net b 2; the third breathing inner port is provided with a third inner end breathable net c1, and the third breathing outer port is provided with a third outer end breathable net c 2; the fourth breathing inner port block is provided with a fourth inner end ventilation net d1, and the fourth breathing outer port block is provided with a fourth outer end ventilation net d 2. In the practical use process, the first inner end breathable net a1 can block the completely deformed first active elastic air bag 53, so that the situation that the first active elastic air bag 53 is partially extruded into the first breathing passage 51111 for a long time due to overlarge internal expansion pressure to cause bursting or abrasion and the like is avoided; meanwhile, the first outer end breathable net a2 can prevent external impurities from entering the first breathing passage 51111 to block the first breathing passage 51111, so that the first breathing passage 51111 can breathe smoothly. The second inner end breathable net b1 can block the completely deformed second active elastic airbag 63, so that the second active elastic airbag 63 is prevented from being partially extruded into the second breathing passage 61111 for a long time due to overlarge internal expansion pressure to cause the situations of bursting or abrasion and the like; meanwhile, the second outer end breathable net b2 can prevent external impurities from entering the second breathing passage 61111 to block the second breathing passage 61111, so that the second breathing passage 61111 can breathe smoothly. The third inner end breathable net c1 can block the completely deformed third active elastic air bag 73, so that the situation that the third active elastic air bag 73 is partially extruded into the third breathing channel 71111 for a long time due to overlarge internal expansion pressure to be broken or abraded and the like is avoided; meanwhile, the third outer end breathable net c2 can prevent external impurities from entering the third breathing channel 71111 to block the third breathing channel 71111, and therefore the third breathing channel 71111 can breathe smoothly. The fourth inner end breathable net d1 can block the completely deformed fourth active elastic airbag 83, so that the situation that the fourth active elastic airbag 83 is partially extruded into the fourth breathing channel 81111 for a long time due to overlarge internal expansion pressure to cause bursting or abrasion and the like is avoided; meanwhile, the fourth outer end ventilation net d2 can prevent external impurities from entering the fourth breathing passage 81111 to block the fourth breathing passage 81111, and therefore the fourth breathing passage 81111 can breathe smoothly.

In order to realize the stable support and relative sliding action of each of the driving slider and the driven slider, preferably, two or more first buffer springs 59 are supported in a balanced manner between the inner end of the first driving slider 55 and the outer end of the first driven slider 56; the two or more second buffer springs 69 are supported between the inner end of the second active slider 65 and the outer end of the second passive slider 66 in a balanced manner; more than two third buffer springs 79 are supported between the inner end of the third active slider 75 and the outer end of the third passive slider 76 in a balanced manner; more than two fourth buffer springs 89 are supported between the inner end of the fourth driving slide block 85 and the outer end of the fourth driven slide block 86 in a balanced manner; the two or more first insulating holding springs 50 are supported in a balanced manner between the inner end of the first passive slider 56 and the first fixed block 57; the two or more second insulating holding springs 60 are supported between the inner end of the second passive slider 66 and the second fixed block 67 in a balanced manner; two or more third insulating holding springs 70 are supported in a balanced manner between the inner end of the third driven slider 76 and the third fixed block 77; two or more fourth insulation holding springs 80 are supported in equilibrium between the inner end of the fourth driven slider 86 and the fourth fixed block 87.

The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.

Claims

1. A safety elevator comprises an outer door arranged on an elevator shaft corresponding to a corresponding floor, wherein the outer door is provided with a motor for driving the outer door to open; the method is characterized in that: the outer door is provided with a door opening device, and the door opening device comprises a door opening circuit, a door opening switch for conducting and controlling the door opening circuit, and a trigger device for triggering the door opening switch to conduct and open the outer door; the door opening circuit comprises a main lead circuit communicated with a power supply and the motor, and the main lead circuit comprises a first lead branch and a second lead branch which are mutually connected in parallel; the gate-opening switch comprises a first switch and a second switch which are connected in series in the first conductor branch for conducting control, and a third switch and a fourth switch which are connected in series in the second conductor branch for conducting control; the triggering device comprises a first triggering device for driving the elevator car upwards to trigger the first switch, a second triggering device for triggering the second switch, a third triggering device for driving the elevator car downwards to trigger the third switch and a fourth triggering device for triggering the fourth switch; the first switch comprises a first fixed contact part and a first moving contact part which are matched, the second switch comprises a second fixed contact part and a second moving contact part which are matched, the third switch comprises a third fixed contact part and a third moving contact part which are matched, and the fourth switch comprises a fourth fixed contact part and a fourth moving contact part which are matched;

2. A safety elevator according to claim 1, characterized in that: the first extruded block is pivoted with the two first pivoting pieces through a first horizontal rotating shaft, the inner end of the first extruded block is a first arc taking a rotating center as a circle center, and the distance from the first horizontal rotating shaft to the first blocking piece is equal to the radius of the first arc; the second extruded block is pivoted with the two second pivoting pieces through a second horizontal rotating shaft, the inner end of the second extruded block is a second circular arc with a rotating center as a circle center, and the distance from the second horizontal rotating shaft to the second blocking piece is equal to the radius of the second circular arc; the third extruded block is pivoted with the two third pivoting pieces through a third horizontal rotating shaft, the inner end of the third extruded block is a third circular arc with a rotating center as a circle center, and the distance from the third horizontal rotating shaft to the third baffle is equal to the radius of the third circular arc; the fourth extruded block is pivoted with the two fourth pivoting pieces through a fourth horizontal rotating shaft, the inner end of the fourth extruded block is a fourth arc taking the rotating center as the center of circle, and the distance from the fourth horizontal rotating shaft to the fourth blocking piece is equal to the radius of the fourth arc.

3. A safety elevator according to claim 1, characterized in that: the cross-sectional area of the first communication channel is 0.05 to 0.2 times of the cross-sectional area of the first active cavity or the first passive cavity, and the cross-sectional areas of the first active cavity and the first passive cavity are equal; the cross-sectional area of the second communication channel is 0.05 to 0.2 times of the cross-sectional area of the second active cavity or the second passive cavity, and the cross-sectional areas of the second active cavity and the second passive cavity are equal; the cross-sectional area of the third communicating channel is 0.05 to 0.2 times of the cross-sectional area of the third active cavity or the third passive cavity, and the cross-sectional areas of the third active cavity and the third passive cavity are equal; the cross-sectional area of the fourth communicating channel is 0.05 to 0.2 times of the cross-sectional area of the fourth active cavity or the fourth passive cavity, and the cross-sectional areas of the fourth active cavity and the fourth passive cavity are equal.

4. A safety elevator according to claim 3, characterized in that: the cross-sectional area of the first communication passage is 0.1 time of that of the first active cavity or the first passive cavity; the cross-sectional area of the second communication channel is 0.1 time of that of the second active cavity or the second passive cavity; the cross-sectional area of the third communicating channel is 0.1 time of that of the third active cavity or the third passive cavity; the cross-sectional area of the fourth communicating channel is 0.1 time of the cross-sectional area of the fourth active cavity or the fourth passive cavity.

5. A safety elevator according to claim 1, characterized in that: the side walls of the first deformation containing cavity, the second deformation containing cavity, the third deformation containing cavity and the fourth deformation containing cavity are all smooth arcs.

6. A safety elevator according to claim 5, characterized in that: the first breathing channel is provided with a first breathing inner port communicated with the first deformation cavity and a first breathing outer port communicated with the outside, and the first breathing inner port is formed at the position, farthest from the first active elastic airbag, of the first deformation cavity; the second breathing passage is provided with a second breathing inner port communicated with the second deformation cavity and a second breathing outer port communicated with the outside, and the second breathing inner port is formed at the position, farthest from the second active elastic airbag, of the second deformation cavity; the third breathing passage is provided with a third breathing inner port communicated with the third deformation cavity and a third breathing outer port communicated with the outside, and the third breathing inner port is formed at the position, farthest from the third active elastic airbag, of the third deformation cavity; the fourth breathing channel is provided with a fourth breathing inner port communicated with the fourth deformation containing cavity and a fourth breathing outer port communicated with the outside, and the fourth breathing inner port is formed at the position, farthest from the fourth deformation containing cavity, of the fourth active elastic air bag.

7. A safety elevator according to claim 6, characterized in that: the first inner breathing port is provided with a first inner end breathable net in a blocking mode, and the first outer breathing port is provided with a first outer end breathable net in a blocking mode; the second inner breathing port is provided with a second inner end breathable net in a blocking mode, and the second outer breathing port is provided with a second outer end breathable net in a blocking mode; the third breathing inner port is provided with a third inner end breathable net in a blocking manner, and the third breathing outer port is provided with a third outer end breathable net in a blocking manner; the fourth breathing inner port is provided with a fourth inner end breathable net, and the fourth breathing outer port is provided with a fourth outer end breathable net.

8. A safety elevator according to claim 1, characterized in that: the more than two first buffer springs are uniformly supported between the inner end of the first driving slide block and the outer end of the first driven slide block; the more than two second buffer springs are uniformly supported between the inner end of the second driving slide block and the outer end of the second driven slide block; the more than two third buffer springs are uniformly supported between the inner end of the third driving slide block and the outer end of the third driven slide block; the more than two fourth buffer springs are uniformly supported between the inner end of the fourth driving slide block and the outer end of the fourth driven slide block;