CN215101323U

CN215101323U - Anti-falling protection device for machine-room-less freight elevator

Info

Publication number: CN215101323U
Application number: CN202120100896.6U
Authority: CN
Inventors: 李沈荣; 李海龙; 陆莹
Original assignee: Suzhou Damingfu Elevator Co ltd
Current assignee: Suzhou Damingfu Elevator Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-12-10
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a no computer lab cargo lift prevents weighing down protection device, including elevartor shaft and car, the car can go up and down in the elevator shaft under the draw gear effect. Two relative inner walls of the elevator shaft are provided with racks, and the top of the cage is provided with an anti-falling device. The anti-falling device comprises a shell fixed on the top of the car box, a fixed seat is fixed in the shell, a first guide rod and a second guide rod horizontally arranged are vertically arranged on the fixed seat, the second guide rod extends towards two sides along the fixed seat, two clamping blocks capable of being close to or far away from each other are connected to the second guide rod in a sliding mode, and the clamping blocks can be clamped into a rack under the action of a second spring. The first guide rod is connected with a pushing frame in a sliding mode, the pushing frame can be far away from the fixed seat under the action of the first spring, an electromagnet is further fixed on the fixed seat, and the pushing frame is adsorbed by magnetic force of the electromagnet to move towards the fixed seat and pushes the two clamping blocks to be close to each other to slide out of the rack. When the car falls, the car is decelerated by rapid braking until the car is static, and the safety performance of the elevator is improved.

Description

Anti-falling protection device for machine-room-less freight elevator

Technical Field

The utility model relates to an elevator technical field especially relates to no computer lab cargo lift anti-falling protection device.

Background

In recent years, the development of the elevator industry has been changed from the traditional elevator with a machine room to the elevator without the machine room, and the elevator without the machine room adopts frequency conversion and speed regulation microcomputer control, and has a great difference from the traditional vertical elevator in structure. In order to save space, the machine room-less elevator changes the control cabinet, the host machine, the speed limiter and other devices which are installed in the machine room above the well in the past into installation in the well, cancels the special machine room arrangement, and reduces the construction cost while effectively improving the utilization rate of the building area.

Elevators have multiple safety devices, but there are many places where problems are likely to occur. Especially sudden breakage of the elevator traction line or failure of the point motor causes the elevator to drop sharply, causing injury to people riding the elevator. The security of elevator is the important index of elevator performance, and protection device such as overspeed governor and safety tongs are adopted more to present elevator, how to avoid the elevator accident to fall, and then reduce personnel's injury or injures and deaths become the problem that people need solve a urgent need.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a no computer lab cargo elevator anti-falling protection device, thereby can reduce the speed of the car when the car falls suddenly by rapid braking until the car is static, improve the safety performance of the elevator.

In order to achieve the above purpose, the utility model discloses a technical scheme is: no computer lab cargo elevator prevents weighing down protection device, including elevartor shaft and car, the car can go up and down in the elevator shaft under the draw gear effect, its characterized in that: two opposite inner walls of the elevator shaft are provided with racks, and the top of the cage is provided with an anti-falling device; the anti-falling device comprises a shell fixed on the top of the car, a fixed seat is fixed in the shell, a first guide rod and a second guide rod which is horizontally arranged are vertically arranged on the fixed seat, the second guide rod extends towards two sides along the fixed seat, two clamping blocks which can be close to or far away from each other are connected on the second guide rod in a sliding mode, and the clamping blocks can be clamped into the racks under the action of a second spring; sliding connection has the frame that pushes away on the first guide arm, push away the fixing base that can keep away from under the spring action of frame, still be fixed with the electro-magnet on the fixing base, the frame adsorbs towards the fixing base motion and promotes two fixture blocks and is close to each other with the roll-off rack at the magnetic force through the electro-magnet.

The beneficial effects of the utility model reside in that: when the lift car normally operates, the electromagnet is electrified to generate magnetic force, the adsorption pushing frame is close to the fixed seat, and the pushing frame pushes the two clamping blocks to be close to each other to draw the rack, so that the lift car can normally operate conveniently. When the car descends rapidly, the electromagnet is powered off and demagnetized, the pushing frame is far away from the fixed seat under the action of the first spring, two clamping blocks are far away from each other under the action of the second spring at the moment, the rack is clamped, and the deceleration of the car is realized until the car stops by matching with the rack. Through the arrangement of the anti-falling device, the safety of the elevator operation is greatly improved, and casualties caused by sudden falling of the car are prevented.

Further, the first spring is sleeved on the first guide rod between the pushing frame and the fixed seat, one end of the first spring is abutted to the fixed seat, the other end of the first spring is abutted to the pushing frame, and when the electromagnet is electrified, the first spring is in a compressed state. When the electromagnet is powered off, the pushing frame can be quickly reset through the elastic force of the first spring.

Further, the pushing frame comprises a transverse plate sleeved on the first guide rod and two pushing plates fixedly connected with the transverse plate, the two pushing plates are arranged in a splayed mode, each pushing plate is provided with a first inclined surface, and the fixture block is provided with a second inclined surface matched with the first inclined surface. The first inclined plane and the second inclined plane are matched to realize that one pushing frame pushes two clamping blocks to move synchronously.

Further, the first inclined plane is rotatably connected with a roller, and the side wall of the roller is abutted against the second inclined plane and rolls along the second inclined plane. Reduce friction and prolong service life.

Further, the second spring is sleeved on the second guide rod between the clamping block and the fixed seat, one end of the second spring is abutted against the fixed seat, and the other end of the second spring is abutted against the clamping block.

Further, a plurality of car buffers are arranged at the bottom of the elevator shaft, and the car buffers are spring buffers. When the car touches the bottom, the buffer function is achieved.

Furthermore, the traction device comprises a traction sheave arranged at the top of the elevator shaft, the traction sheave rotates under the action of a driving motor, a traction rope is wound on the traction sheave, one end of the traction rope is fixedly connected with the elevator car through an elevator car rope head assembly, and the other end of the traction rope is connected with a counterweight block through a counterweight rope head assembly.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of the fall preventing device in the embodiment of the present invention.

In the figure:

1-elevator shaft, 2-car, 3-rack, 4-shell, 5-fixed seat, 51-first guide rod, 52-second guide rod, 53-electromagnet, 6-clamping block, 61-second inclined plane, 7-second spring, 8-pushing frame, 81-transverse plate, 82-pushing plate, 9-first spring, 10-roller, 11-car buffer, 12-traction sheave, 13-traction rope and 14-counterweight block.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Examples

Referring to the attached drawings 1-2, the anti-falling protection device for the machine-room-less freight elevator comprises an elevator shaft 1 and a car 2, wherein the car 2 can lift in the elevator shaft 1 under the action of a traction device. The traction device comprises a traction sheave 12 arranged at the top of the elevator shaft 1, the traction sheave 12 rotates under the action of a driving motor, a traction rope 13 is wound on the traction sheave 12, one end of the traction rope 13 is fixedly connected with the elevator car 2 through a rope head assembly of the elevator car 2, and the other end of the traction rope is connected with a counterweight 14 through a counterweight rope head assembly.

Two opposite inner walls of the elevator shaft 1 are provided with racks 3, and the top of the cage 2 is provided with an anti-falling device; the anti-falling device comprises a shell 4 fixed on the top of the cage 2, a fixed seat 5 is fixed in the shell 4, a first guide rod 51 and a second guide rod 52 horizontally arranged are vertically arranged on the fixed seat 5, the second guide rod 52 extends towards two sides along the fixed seat 5, two clamping blocks 6 capable of being close to or far away from each other are connected on the second guide rod 52 in a sliding mode, and the clamping blocks 6 can be clamped into the racks 3 under the action of a second spring 7. Sliding connection has the frame 8 that pushes away on first guide arm 51, pushes away frame 8 and can keep away from fixing base 5 under the effect of first spring 9, still is fixed with electro-magnet 53 on the fixing base 5, pushes away frame 8 and adsorbs the motion towards fixing base 5 and promote two fixture blocks 6 and be close to each other in order to roll off rack 3 through the magnetic force of electro-magnet 53.

The first spring 9 is sleeved on the first guide rod 51 between the pushing frame 8 and the fixed seat 5, one end of the first spring 9 abuts against the fixed seat 5, the other end of the first spring abuts against the pushing frame 8, and when the electromagnet 53 is electrified, the first spring 9 is in a compressed state. When the electromagnet 53 is powered off, the push frame 8 can be quickly reset through the elastic force of the first spring 9.

The pushing frame 8 comprises a transverse plate 81 sleeved on the first guide rod 51 and two pushing plates 82 fixedly connected with the transverse plate 81, the two pushing plates 82 are arranged in a splayed shape, each pushing plate 82 is provided with a first inclined surface, and the fixture block 6 is provided with a second inclined surface 61 matched with the first inclined surface. The cooperation of the first inclined plane and the second inclined plane 61 realizes that one pushing frame 8 pushes the two clamping blocks 6 to move synchronously. The roller 10 is rotatably connected to the first inclined surface, and the side wall of the roller 10 abuts against the second inclined surface 61 and rolls along the second inclined surface 61. Reduce friction and prolong service life. An iron block matched with the electromagnet 53 is fixed on the transverse plate 81 and can be close to the fixed seat 5 under the magnetic force adsorption of the electromagnet 53.

The second spring 7 is sleeved on the second guide rod 52 between the fixture block 6 and the fixed seat 5, one end of the second spring 7 abuts against the fixed seat 5, and the other end of the second spring abuts against the fixture block 6.

A plurality of car buffers 11 are arranged at the bottom of the elevator shaft 1, and the car buffers 11 are spring buffers. When the car 2 touches down, the buffer function is achieved.

The car 2 is also provided with a speed sensor for detecting the lifting speed of the car and a controller in communication connection with the speed sensor, the speed sensor transmits the collected speed of the car 2 to the controller in real time, and the controller judges whether the car 2 has a falling phenomenon. The controller is also in communication with the electromagnet 53 for controlling the energization and de-energization of the electromagnet 53.

When the car 2 normally operates, the electromagnet 53 is electrified to generate magnetic force, the adsorption pushing frame 8 is close to the fixed seat 5, the pushing frame 8 pushes the two clamping blocks 6 to be close to each other to mark the rack 3, and the normal operation of the car 2 is facilitated. When car 2 descends rapidly, speed sensor detects car 2's abnormal conditions, uploads to the controller, and controller control electro-magnet 53 cuts off the power supply and demagnetizes, pushes away the fixing base 5 of keeping away from under the effect of first spring 9 of frame 8, and two fixture blocks 6 keep away from each other under the effect of second spring 7 this moment, chucking rack 3 to realize car 2's speed reduction until stopping with rack 3 cooperation. Through the arrangement of the anti-falling device, the safety of the operation of the elevator is greatly improved, and casualties caused by sudden falling of the car 2 are prevented.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. No computer lab cargo elevator prevents weighing down protection device, including elevartor shaft (1) and car (2), car (2) can go up and down in elevartor shaft (1) under draw gear effect, its characterized in that: two opposite inner walls of the elevator shaft (1) are provided with racks (3), and the top of the car (2) is provided with an anti-falling device; the anti-falling device comprises a shell (4) fixed to the top of the car (2), a fixed seat (5) is fixed in the shell (4), a first guide rod (51) and a second guide rod (52) horizontally arranged are vertically arranged on the fixed seat (5), the second guide rod (52) extends towards two sides along the fixed seat (5), two clamping blocks (6) capable of being close to or far away from each other are connected onto the second guide rod (52) in a sliding mode, and the clamping blocks (6) can be clamped into the racks (3) under the action of a second spring (7); sliding connection has and pushes away frame (8) on first guide arm (51), it can keep away from fixing base (5) under first spring (9) effect to push away frame (8), still be fixed with electro-magnet (53) on fixing base (5), it adsorbs towards fixing base (5) motion and promotes two fixture blocks (6) and is close to each other with roll-off rack (3) to push away frame (8) magnetic force through electro-magnet (53).

2. The fall protection device for the machine-room-less cargo elevator according to claim 1, characterized in that: first spring (9) suit pushes away on first guide arm (51) between frame (8) and fixing base (5), first spring (9) one end and fixing base (5) support and lean on, the other end with push away frame (8) and support and lean on, work as when electro-magnet (53) circular telegram, first spring (9) are in compression state.

3. The machine room-less cargo elevator anti-falling protection device according to claim 2, characterized in that: push away frame (8) including cup jointing diaphragm (81) on first guide arm (51) and two push pedal (82) with the diaphragm consolidation, two push pedal (82) become eight characters type setting, every all be provided with first inclined plane on push pedal (82), be provided with second inclined plane (61) with first inclined plane matching on fixture block (6).

4. The machine room-less cargo elevator anti-falling protection device according to claim 3, characterized in that: the first inclined plane is rotatably connected with a roller (10), and the side wall of the roller (10) is abutted against the second inclined plane (61) and rolls along the second inclined plane (61).

5. The fall protection device for the machine-room-less cargo elevator according to claim 1, characterized in that: the second spring (7) is sleeved on the second guide rod (52) between the clamping block (6) and the fixed seat (5), one end of the second spring (7) abuts against the fixed seat (5), and the other end of the second spring abuts against the clamping block (6).

6. The fall protection device for the machine-room-less cargo elevator according to claim 1, characterized in that: the bottom of elevartor shaft (1) is provided with a plurality of car buffers (11), the car buffer is spring damper.

7. The fall protection device for the elevator without machine room and cargo load according to any one of claims 1 to 6, characterized in that: the traction device is used for comprising a traction sheave (12) arranged at the top of an elevator shaft (1), the traction sheave (12) rotates under the action of a driving motor, a traction rope (13) is wound on the traction sheave, one end of the traction rope (13) is fixedly connected with a car (2) through a car rope head combination, and the other end of the traction rope is connected with a counterweight block (14) through a counterweight rope head combination.