CN113682934A

CN113682934A - Elevator car door vertical synchronous locking device

Info

Publication number: CN113682934A
Application number: CN202110932771.4A
Authority: CN
Inventors: 谭晓亨; 苏诗妍; 张文燕
Original assignee: Hitachi Elevator China Co Ltd
Current assignee: Hitachi Elevator China Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-11-23
Anticipated expiration: 2041-08-13
Also published as: CN113682934B

Abstract

The invention discloses an elevator car door up-and-down synchronous locking device, which comprises a car door upper locking mechanism, wherein the car door upper locking mechanism comprises an upper locking seat and an upper locking hook which are matched in a locking manner, the upper locking seat is fixedly arranged between two door machine hanging plates on a door machine, a car door plate is arranged below each door machine hanging plate, the upper locking hook is rotatably arranged on one door machine hanging plate, and the upper locking hook is connected with a car door lower locking mechanism through a transmission connecting mechanism; the car door lower locking mechanism comprises a lower locking hook and a lower locking seat which are matched in a locking manner, the lower locking hook is rotatably arranged at the lower part of the car door panel positioned below the upper locking hook, and the lower locking seat is fixedly arranged at the lower part of the other car door panel; the lower lock hook and the upper lock hook can simultaneously rotate under the linkage action of the transmission connecting mechanism. The car door locking device can realize simultaneous locking of the car door up and down, effectively avoids the safety problem of splayed gaps caused by forced opening of the car door, and has the advantages of simple structure, lower cost and stable unlocking control force.

Description

Elevator car door vertical synchronous locking device

Technical Field

The invention relates to the technical field of elevator door systems, in particular to an elevator car door vertical synchronous locking device.

Background

At present, with the increase of high-rise buildings, elevators are increasingly convenient and fast transportation tools in daily life, and meanwhile, the safety performance of the elevators is very important to guarantee. The door system is one of the important component systems of the elevator, and in the past accident case, the door system accident occupies a certain proportion, and has certain influence on the safety of the elevator.

When the car stays in a non-flat area due to power failure or malfunction during operation, passengers in the car may intend to open the car door to get away by their own power. In order to ensure the safety of passengers, it is ensured that the car door cannot be opened when the elevator is in a non-flat zone. At present, the car door lock is basically arranged on the door machine, namely, the car door lock is only arranged at the upper end of the car door. Because the sedan-chair lock is unblanked and has certain stroke, so when the elevator stops in non-flat zone region, when the sedan-chair door is opened by force in the sedan-chair, certain clearance can be opened earlier to the sedan-chair door, and the latch hook just can contact the lock seat, and according to prior art, sedan-chair door lock only sets up on sedan-chair door upper portion, and sedan-chair door lower part does not set up locking device, if continue to force the door of opening by force this moment, the sedan-chair door will slightly rotate. Supposing that the door pulley block assembly limiting wheel has a reserved gap of 1mm from a door guide rail, and the gap of abrasion and car door sinking is about 2mm in total, taking a car door with the size of 400 multiplied by 2800 as an example to calculate, when the car door rotates to the limit position by taking a roller nearest to a lock hook as a fulcrum, as shown in the left side of fig. 7, a splayed gap can appear due to no lock hook at the lower part of the car door, according to the principle that the corresponding side of a similar triangle is in proportion to the length of the corresponding side, the maximum gap of the lower part of the single-side car door can be calculated to be 14mm, as the car door lock is unlocked to have a certain stroke, as calculated by taking 16mm as an example, as shown in the right side of fig. 7, the maximum gap of the lower part of the car door can reach 60mm, and exceeds the maximum value (50mm) allowed by national standard, and as the door is higher, the gap of the lower part is larger. When the clearance surpassed national standard, in the regional area that does not open the door, the sedan-chair door can be stretched out to the staff, opens the sedan-chair door through pulling the stay cord, probably leads to the accident of falling.

Disclosure of Invention

The invention aims to provide an elevator car door up-down synchronous locking device, which can effectively solve the problem that splayed gaps are out of standard when the door is forcibly opened in the prior art by adopting a mode of locking the car door at the upper part and the lower part simultaneously, and prevent accidents caused by opening the door of an elevator in a non-door opening area.

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

an elevator car door up-and-down synchronous locking device comprises a car door upper locking mechanism, wherein the car door upper locking mechanism comprises an upper lock seat and an upper lock hook which are matched in a locking manner, the upper lock seat is fixedly arranged between two gantry crane hanging plates on a gantry crane, a car door plate is arranged below each gantry crane hanging plate, the upper lock hook is rotatably arranged on one gantry crane hanging plate through an upper lock hook shaft, and the upper lock hook is connected with a car door lower locking mechanism through a transmission connecting mechanism; the car door lower locking mechanism comprises a lower locking hook and a lower locking seat which are in locking fit, the lower locking hook is rotatably arranged at the lower part of the car door panel positioned below the upper locking hook through a lower locking hook shaft, and the lower locking seat is fixedly arranged at the lower part of the other car door panel; the lower lock hook and the upper lock hook can simultaneously rotate under the linkage action of the transmission connecting mechanism.

And furthermore, a detection switch is arranged below the lower lock hook and is electrically connected with the elevator control device. Therefore, the detection switch can be used for detecting and transmitting an unlocking signal or a locking signal.

Furthermore, two times of a first clearance distance between the upper lock hook and the upper lock seat is equal to a second clearance distance between the lower lock hook and the lower lock seat, and the two times of the first clearance distance and the second clearance distance are both less than or equal to 50 mm. Therefore, the first clearance distance L1 corresponds to an upper unlocking stroke, the second clearance distance L2 corresponds to a lower unlocking stroke, and 2L 1 is set to be L2 which is not more than 50mm, so that the lower opening distance of the car door when the car door is forcibly opened meets the national standard requirement, and the safety of passengers in the car is protected.

Furthermore, the lower lock seat is positioned in the car door sill groove, so that the lower lock seat can be hidden in the car door sill groove, and the lower lock mechanism of the car door cannot be seen from the outside when the door is opened, so that the structure is attractive.

Further, transmission coupling mechanism includes the driving lever, rotates pendulum rod and canceling release mechanical system, it sets up on being located to rotate the sedan-chair door plant of upper lock hook below through the pendulum rod pivot to rotate the pendulum rod, lower lock hook is equipped with the guide way of slope distribution, the lower part of rotating the pendulum rod rotate be equipped with guide way complex lower gyro wheel, the driving lever is fixed the lower part of upper lock hook, the upper portion of rotating the pendulum rod is supported and is leaned on the connection the driving lever orientation the side surface of upper lock seat, canceling release mechanical system can drive the upper portion of rotating the pendulum rod maintains the orientation the rotatory trend of driving lever direction. Thus, the deflector rod can push the rotary oscillating bar to rotate around the oscillating bar rotating shaft, so as to drive the lower idler wheel to utilize the guide grooves which are distributed in an inclined manner to jack the lower lock hook upwards for rotation, and the unlocking of the lower lock hook is completed; when the acting force of the deflector rod on the rotating swing rod is cancelled, the rotating swing rod can be restored to the initial position state by the reset mechanism.

Further, the reset mechanism is a spring, one end of the spring is arranged on a car door plate located below the upper locking hook, and the other end of the spring is arranged at one end, close to the shifting lever, of the rotating swing rod.

Further, the guide groove is located on the upper portion of the lower lock hook, and the guide groove inclines downwards towards one side of a lower lock hook shaft of the lower lock hook. In this way, the position of the guide groove is higher than that of the lower latch hook shaft in the horizontal direction, so that the lower roller can be ensured to jack up and rotate the lower latch hook upwards.

Further, the guide groove is an arc-shaped or linear strip-shaped through groove.

Furthermore, the upper part of the rotating swing rod is provided with an upper roller which is connected with the deflector rod in a rolling and abutting mode. So, through adopting the rolling fit to connect the contact, frictional force is little, and life is high.

Further, in a locking state, an included angle between a connecting line of the lower roller and the lower latch hook shaft and the rotary swing rod is smaller than 90 degrees. So, can make down the latch hook have self-locking function, can prevent down the latch hook and receive the exogenic action and beat, improve elevator security.

Compared with the prior art, the invention provides an elevator car door up-down synchronous locking device, which has the following beneficial effects:

the car door lower locking mechanism is arranged, the car door lower locking is realized through the lower locking hook and the lower locking seat which are arranged on the car door lower part, and the car door upper locking mechanism on the door machine is linked through the transmission connecting mechanism, so that the car door is locked up and down simultaneously, and the danger caused by splayed gaps due to forced opening of the car door is effectively avoided. The car door lower locking mechanism has a self-locking function, and can effectively prevent the lower lock hook from jumping and improve the safety of an elevator when uncontrollable factors such as manual pushing and knocking of a car door occur. In addition, the invention has simple structure and lower cost, adopts the rotating swing rod to control the lower lock hook to unlock, and compared with the unlocking control mode of pulling the lower lock hook through a steel wire rope, a pull rod and the like, the invention has stable unlocking control force, small unlocking force and convenient adjustment, and does not have uncertain force loss caused by gravity, friction and the like generated by an intermediate transmission part, thereby ensuring the stability of unlocking; the invention is independent of other door machine action systems, and can be additionally installed on the basis of not influencing the original door machine system; a full-mechanical transmission system is adopted, the dependence on electric signals is not required, the reliability is high, and the malfunction risk is low; the contact motion part of the invention adopts rolling fit, the friction is small, and the service life is long.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the door closing state of the present invention;

FIG. 2 is an enlarged view of detail A in FIG. 1;

FIG. 3 is a schematic illustration of the present invention unlocking during a flat zone door opening;

FIG. 4 is a schematic illustration of the present invention during door opening or closing in a flat zone;

FIG. 5 is a schematic view of the self-locking mechanism for the lower door of the car according to the present invention after the door is closed;

FIG. 6 is a schematic view of the present invention being used to forcibly open a door in a non-flat zone car;

figure 7 is a schematic view of a prior art car door forcibly opening the door in a non-flat zone car.

Reference numerals: 1. a car door upper locking mechanism; 11. an upper lock seat; 12. an upper latch hook; 13. a locking hook shaft; 2. a gantry crane; 3. a gantry crane hanging plate; 4. a car door panel; 5. a transmission connection mechanism; 51. a deflector rod; 52. rotating the swing rod; 53. a spring; 54. a swing rod rotating shaft; 55. a lower roller; 56. an upper roller; 6. a car door lower locking mechanism; 61. a lower latch hook; 611. a guide groove; 62. a lower lock seat; 63. a lower latch hook shaft; 7. a detection switch; 8. a car door sill groove; l1, first gap distance; l2, second gap distance; alpha, an included angle; F. an external force; w, rotating force.

Detailed Description

The technical solutions of the present invention will be described clearly and completely in the following detailed description of embodiments thereof, which is to be understood as being illustrative only and not restrictive in all respects. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 6, the present embodiment provides an elevator car door vertical synchronization locking device, including a car door upper locking mechanism 1, where the car door upper locking mechanism 1 includes an upper lock base 11 and an upper lock hook 12 that are in locking fit, the upper lock base 11 is fixedly disposed between two door crane hanging plates 3 on a door crane 2, a car door panel 4 is mounted below each door crane hanging plate 3, the upper lock hook 12 is rotatably disposed on one of the door crane hanging plates 3 through an upper lock hook shaft 13, and the upper lock hook 12 is connected to a car door lower locking mechanism 6 through a transmission connection mechanism 5. The lower door locking mechanism 6 includes a lower latch hook 61 and a lower latch base 62 which are locked and engaged. The lower lock hook 61 is rotatably disposed at the lower portion of the car door panel 4 below the upper lock hook 12 through a lower lock hook shaft 63, can rotate around the lower lock hook shaft 63, and horizontally moves along the door opening and closing direction along with the car door panel 4 in the door opening and closing process. The lower lock base 62 is fixedly arranged at the lower part of the other car door panel 4 and can horizontally move along with the car door panel 4 along the door opening and closing direction in the door opening and closing process. The lower locking hook 61 and the upper locking hook 12 can simultaneously rotate under the linkage action of the transmission connecting mechanism 5. So, set up sedan-chair door lower part locking mechanical system 6, through installing in the lower latch hook 61 of sedan-chair door plant 4 lower part and realizing the locking of sedan-chair door lower part with lower lock seat 62 to through transmission coupling mechanism 5 and the 1 linkage effect of sedan-chair door upper portion locking mechanical system on the door machine 2, thereby realize locking simultaneously from top to bottom of sedan-chair door, effectively avoided the sedan-chair door because of forcing open the danger that the splayed clearance that leads to causes, have simple structure, advantage with low costs. In addition, because the door control system is independent of other door control action systems, the door control system can be additionally installed on the basis of not influencing the original door control system; and a full mechanical transmission system is adopted, the dependence on electric signals is not required, the reliability is high, and the malfunction risk is low.

Referring to fig. 1 and 2, the transmission connecting mechanism 5 includes a shift lever 51, a rotary swing lever 52, and a reset mechanism. The rotary swing link 52 is rotatably arranged on the car door panel 4 below the upper lock hook 12 through a swing link rotating shaft 54, can rotatably swing around the swing link rotating shaft 54, and can horizontally move along with the car door panel 4 during door opening and closing. The lower latch hook 61 is provided with a guide groove 611 which is distributed obliquely, and the lower portion of the rotary swing rod 52 is rotatably provided with a lower roller 55 which is in linkage fit with the guide groove 611. The shift lever 51 is fixed at the lower part of the upper lock hook 12, rotates along with the lifting and falling of the upper lock hook 12, and can horizontally move along with the hanging plate 3 of the gantry crane during the door opening and closing. The upper portion of the rotary swing link 52 abuts against the side surface of the shift lever 51 facing the upper lock seat 11, and the reset mechanism can drive the upper portion of the rotary swing link 52 to maintain the tendency of rotating toward the shift lever 51. Thus, the shift lever 51 can push the rotary swing rod 52 to rotate around the swing rod rotating shaft 54, so as to drive the lower roller 55 to jack up the lower latch hook 61 upwards for rotation by using the guide grooves 611 which are distributed obliquely, thereby completing the unlocking of the lower latch hook; when the driving lever 51 cancels the acting force on the rotating swing link 52, the rotating swing link 52 can be restored to the initial position state by the reset mechanism. Because the lower lock hook 61 is controlled to be unlocked by adopting the rotary swing rod 52, compared with an unlocking control mode of pulling the lower lock hook through a steel wire rope, a pull rod and the like, the unlocking control force is stable, uncertain force loss caused by gravity, friction and the like generated by an intermediate transmission part is avoided, the unlocking force is small, and the adjustment is convenient, so that the unlocking stability is ensured.

Referring to fig. 5, in order to make the lower door locking mechanism 6 self-locking, the angle α between the line connecting the lower roller 55 and the lower latch shaft 63 and the swing link 52 is less than 90 ° in the locked state. So, when taking place the uncontrollable factor such as people's promotion and knocking the sedan-chair door, can prevent down the latch hook and receive the exogenic action and beat, improve elevator security.

Referring to fig. 1 to 4, as a preferred embodiment, the return mechanism is a spring 53, one end of the spring 53 is disposed on the door panel 4 below the upper latch hook 12, and the other end of the spring 53 is disposed at one end of the swing lever 52 close to the shift lever 51. More specifically, the spring 53 is installed on the car door panel 4 away from the door opening center, so that the spring 53 has a pulling force after being installed, and when the upper latch hook 12 is locked with the upper latch base 11, the rotating swing link 52 can be pulled back to the initial position by the pulling force of the spring 53. In other embodiments, the spring 53 may be installed near the center of the door, such that the spring 53 has an elastic force after being installed, and the rotating link 52 can be rebounded to the initial position by the elastic force of the spring 53 after the upper locking hook 12 is locked with the upper locking seat 11.

In some embodiments, as shown in fig. 2, the guide groove 611 is located at an upper portion of the lower latch hook 61, and the guide groove 611 is inclined downward toward a lower latch hook shaft 63 side of the lower latch hook 61. In this way, the position of the guide groove 611 is higher than the position of the lower latch shaft 63 in the horizontal direction, and the lower roller 55 can surely rotate the lower latch 61 to be lifted up.

In a preferred embodiment, the guide groove 611 is preferably a linear or arc-shaped through groove.

In some specific embodiments, referring to fig. 1, 3, 4 and 6, an upper portion of the rotary swing link 52 is provided with an upper roller 56 connected to the shift lever 51 in rolling contact. So, through adopting the rolling fit to connect the contact, frictional force is little, and life is high.

In some embodiments, referring to FIG. 6, twice the first clearance distance L1 between the upper lock hook 12 and the upper lock receptacle 11 is equal to the second clearance distance L2 between the lower lock hook 61 and the lower lock receptacle 62, and both twice the first clearance distance L1 and the second clearance distance L2 are equal to or less than 50 mm. Therefore, the first clearance distance L1 corresponds to an upper unlocking stroke, the second clearance distance L2 corresponds to a lower unlocking stroke, and 2L 1 is set to be L2 which is not more than 50mm, so that the lower opening distance of the car door when the car door is forcibly opened meets the national standard requirement, and the safety of passengers in the car is protected.

In some embodiments, as shown in fig. 1 to 6, the lower lock housing 62 is located in the door sill 8 so as to be hidden in the door sill 8, and the door lower lock mechanism 6 is hidden from the outside when the door is opened, resulting in an aesthetic appearance.

In some specific embodiments, as shown in fig. 1 to 6, a detection switch 7 is located below the lower latch hook 61, and the detection switch 7 is electrically connected to an elevator control device. In this way, the detection switch 7 can be used to detect and transmit an unlocking signal or a lock-down signal. Preferably, the detection switch 7 can be a switch with a short trigger stroke, such as a micro-touch switch, so as to accurately detect the state of the opening and closing door.

The working principle of the invention is as follows:

(1) when the elevator is normally opened in the leveling zone (the process is in the sequence of fig. 1, 3 and 4): the upper hook 12 automatically rotates anticlockwise and lifts upwards along with the opening of the car door, the upper hook 12 is separated from the upper seat 11, and the unlocking action on the upper part of the car door is completed; meanwhile, the shift lever 51 fixed to the upper latch hook 12 swings counterclockwise as the upper latch hook 12 swings upward and acts on the upper roller 56, so that the swing link 52 is urged to swing clockwise around the swing link rotating shaft 54 against the urging force of the spring 53, the lower roller 56 at the lower portion of the swing link 52 moves in the guide groove 611, the upper side of the guide groove 611 is pushed by the lower roller 55, a rotational force is provided, the lower latch hook 61 swings counterclockwise around the lower latch hook shaft 63, the unlocking operation of the lower latch mechanism of the car door is completed, and both the upper car door lock and the lower car door lock complete unlocking, as shown in fig. 3. Because the rotating swing rod 52 is adopted to control the unlocking of the lower lock hook 61, the unlocking control force is stable, and the unlocking force is small. When the lower lock hook 61 is lifted upwards for unlocking, the detection switch 7 arranged at the lower part of the car door panel 4 transmits an unlocking signal. Along with the operation of the gantry crane hanging plate 3, the car door panel 4 continues to move horizontally along the opening direction until the car door panel is completely opened, as shown in fig. 4.

(2) When the elevator is normally closed in the leveling zone (the process is according to the sequence of fig. 4, fig. 3 and fig. 1): the left car door panel and the right car door panel 4 horizontally move along the closing direction, and when the car door panels 4 are closed to a lock falling area, as shown in fig. 3, the upper lock hooks 12 rotate clockwise and fall back to complete the lock falling action; meanwhile, the shift lever 51 fixed to the upper latch hook 12 rotates clockwise to swing to the original position along with the fall back of the upper latch hook 12, and the acting force on the upper roller 56 is cancelled; under the action of the spring 53, the rotary swing rod 52 rotates counterclockwise around the swing rod rotating shaft 54 to return to the original position, at this time, the lower roller 55 connected to the lower part of the rotary swing rod 52 moves back to the initial position in the guide groove 611, the action force on the lower locking hook 61 is cancelled, the lower locking hook 61 rotates clockwise around the lower locking hook shaft 63 to fall back under the action of self gravity, and the locking action is completed; the detection switch 7 installed at the lower part of the car door panel 4 transmits a lock signal, at this time, the car door is closed, and the upper part and the lower part are simultaneously locked, as shown in fig. 1. Under the locking state of the car door lower locking mechanism 6, an included angle alpha is formed between the connecting line of the lower roller 55 and the lower latch hook shaft 63 and the rotating swing rod 52, the lower latch hook 61 cannot be opened under the action of the rotating swing rod 52, when the lower latch hook 61 is forcibly unlocked under the action of an external force F, because the included angle alpha is less than 90 degrees, the lower latch hook 61 pushes the rotating swing rod 52 to generate an anticlockwise rotating force W under the action of the external force F, and the swing rod 52 cannot rotate anticlockwise at the moment, so that the self-locking function is realized, the lower latch hook 61 can be effectively prevented from jumping to cause unlocking, and the safety of the elevator is improved.

(3) When the elevator forcibly opens the door in a non-flat zone: referring to fig. 6, in the non-leveling zone, if the elevator door is forcibly opened in the car from the closed state, the upper lock hook 12 pulls the upper lock base 11, and the upper portion of the car door can be opened only a slight distance L1 (i.e., an upper unlocking stroke), and the upper portion of the car door is locked. Because the upper lock hook 12 can not be lifted in a rotating mode, the shifting rod 51 fixed on the upper lock hook 12 can not rotate along the door opening direction horizontal movement L1 along with the upper lock hook 12, the swinging rod 52 can not be triggered to rotate, the lower idler wheel 55 can not drive the lower lock hook 61 to lift around the lower lock hook shaft 63 in a rotating mode, the lower lock hook 61 pulls the lower lock base 62 at the moment, the lower portion of the car door can only be opened by a section of micro distance L2 (namely, the lower unlocking stroke), the car door can be locked vertically and simultaneously, only by setting 2L 1 to L2 which is not more than 50mm, the door opening gap when the car door is opened forcibly can meet the national standard requirements, and passenger safety in the car is protected.

(4) When the elevator rescues outside the hall: when the elevator is in the door opening area, the outdoor rescue door opening mode is the same as the unlocking mode when the door is normally opened. When the elevator is in a non-door-opening area, the landing door is firstly opened, the upper lock hook 12 is pulled through the pull rope, then the upper lock hook 12 is lifted up to complete the unlocking action, the upper lock hook 12 is separated from the upper lock seat 11, and meanwhile, the action processes of the transmission connecting mechanism 5 and the car door lower locking mechanism 6 are the same as those of the normal door opening of a flat zone.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an elevator sedan-chair door is locking device in step from top to bottom, includes sedan-chair door upper portion locking mechanical system, sedan-chair door upper portion locking mechanical system includes the complex of closure lock seat and goes up the hook, go up the fixed two door machines that set up on the door machine and hang between the link plate, the sedan-chair door plant is installed to the below of every door machine hanging plate, go up the hook and rotate through the hook axle that goes up and set up on one of them door machine hanging plate, its characterized in that: the upper lock hook is connected with a car door lower locking mechanism through a transmission connecting mechanism; the car door lower locking mechanism comprises a lower locking hook and a lower locking seat which are in locking fit, the lower locking hook is rotatably arranged at the lower part of the car door panel positioned below the upper locking hook through a lower locking hook shaft, and the lower locking seat is fixedly arranged at the lower part of the other car door panel; the lower lock hook and the upper lock hook can simultaneously rotate under the linkage action of the transmission connecting mechanism.

2. The elevator car door up-down synchronous locking device according to claim 1, characterized in that: and a detection switch is arranged below the lower lock hook and is electrically connected with the elevator control device.

3. The elevator car door up-down synchronous locking device according to claim 1, characterized in that: two times of first clearance distance between the upper lock hook and the upper lock seat is equal to second clearance distance between the lower lock hook and the lower lock seat, and the two times of the first clearance distance and the second clearance distance are both less than or equal to 50 mm.

4. The elevator car door up-down synchronous locking device according to claim 1, characterized in that: the lower lock seat is positioned in the car door sill groove.

5. The elevator car door up-and-down synchronous locking device according to any one of claims 1 to 4, characterized in that: the transmission connecting mechanism comprises a driving lever, a rotating swing rod and a reset mechanism, the rotating swing rod is rotatably arranged on a car door plate below the upper locking hook through a swing rod rotating shaft, the lower locking hook is provided with a guide groove which is distributed obliquely, the lower part of the rotating swing rod is rotatably provided with a lower idler wheel matched with the guide groove, the driving lever is fixed on the lower part of the upper locking hook, the upper part of the rotating swing rod is abutted against and connected with the driving lever, the driving lever faces towards the side surface of the upper locking seat, and the reset mechanism can drive the upper part of the rotating swing rod to maintain the direction towards the direction of the driving lever.

6. The elevator car door up-down synchronous locking device according to claim 5, characterized in that: the reset mechanism is a spring, one end of the spring is arranged on a car door panel below the upper locking hook, and the other end of the spring is arranged at one end of the rotating swing rod close to the shifting rod.

7. The elevator car door up-down synchronous locking device according to claim 5, characterized in that: the guide groove is positioned at the upper part of the lower lock hook, and the guide groove inclines downwards towards one side of a lower lock hook shaft of the lower lock hook.

8. The elevator car door up-down synchronous locking device of claim 7, wherein: the guide groove is an arc-shaped or linear strip-shaped through groove.

9. The elevator car door up-down synchronous locking device according to claim 5, characterized in that: and the upper part of the rotating swing rod is provided with an upper roller which is connected with the shifting rod in a rolling and abutting mode.

10. The elevator car door up-down synchronous locking device according to claim 5, characterized in that: in a locking state, an included angle between a connecting line of the lower roller and the lower latch hook shaft and the rotary swing rod is smaller than 90 degrees.