CN115520745A - Passenger ladder anti-falling device - Google Patents

Abstract

The invention relates to the technical field of elevators, in particular to a passenger elevator anti-falling device. The invention not only is provided with the anti-falling plate which still has the function of preventing the passenger elevator from continuously falling when the passenger elevator dragging steel wire rope is broken, but also the locking column automatically pops out the locking anti-falling plate after the anti-falling plate is lapped on the protective stretcher plate, so that the anti-falling plate can not be separated from the protective stretcher plate, and the safety performance of the anti-falling device is further improved. The invention has the following beneficial effects: firstly, after the anti-falling plate is lapped on the protective stretcher plate, the triggering post is pressed down by the falling gravity of the passenger elevator, so that the locking post is automatically popped out to lock the anti-falling plate; secondly, after the locking column is popped out, the locking column is locked again by a tail end limiting column arranged at the notch; thirdly, a guide post is arranged on the transmission post, so that the transmission post keeps moving in a vertical state when being connected between the trigger post and the locking post; fourthly, the locking column is composed of an inner column and an outer column, and the inner column and the outer column can be separated by disassembling the locking bolt, so that the locking column is disassembled.

Description

Passenger ladder anti-falling device

Technical Field

The invention relates to the technical field of elevators, in particular to a passenger elevator anti-falling device.

Background

The passenger elevator belongs to one of elevators, is mainly arranged in a high-rise building to be used for facilitating passengers to get on and off floors quickly, however, once the passenger elevator breaks down, the consequences caused by falling are serious, so how to improve the safety coefficient of the passenger elevator, and avoiding the danger of falling of the passenger elevator is a problem which is urgently needed to be solved at present. The elevator is provided with an elevator speed limiter, and when the elevator runs and the car is overspeed or even falls due to any reason, and all other safety protection devices do not work, the elevator speed limiter and the safety tongs perform linkage action to stop the elevator car. However, the device has the defect that only the steel wire rope dragging the elevator is intact and can play a role in protection, in order to ensure that the steel wire rope dragging the passenger elevator can play a role in protection for the passenger elevator even if the steel wire rope is broken, the Chinese patent with the publication number of CN113353758A and the publication number of 2021.09.07 discloses an anti-falling elevator car structure.

However, the invention has the disadvantages that after the falling prevention plate is lapped on the protection stretcher plate, the falling prevention plate is propped against the top surface of the inner groove of the protection stretcher plate and the falling prevention plate mounting groove, but the force applied by the top surface of the inner groove of the protection stretcher plate and the falling prevention plate mounting groove to the protection stretcher plate is not in the same straight line, so that a shearing force exists in the middle of the falling prevention plate, the falling prevention plate is easy to separate from the protection stretcher plate, even a gap is propped against the top surface of the inner groove of the falling prevention plate mounting groove, and the falling prevention plate is separated from the protection stretcher plate, thereby generating the risk of continuous falling.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a passenger elevator anti-falling device which is not only provided with an anti-falling plate which still has the function of preventing a passenger elevator from continuously falling when a passenger elevator traction steel wire rope is broken, but also has the advantages that after the anti-falling plate is lapped on a protective stretcher plate, a locking column automatically pops out the locking anti-falling plate, so that the anti-falling plate is not separated from the protective stretcher plate, and the safety performance of the anti-falling device is further improved.

The technical purpose of the invention is realized by the following technical scheme: a passenger elevator anti-falling device comprises an anti-falling plate and a protective stretcher plate, wherein the anti-falling plate is arranged on the side surface of a passenger elevator and is opened after a steel wire rope for dragging the passenger elevator is broken, and the protective stretcher plate is arranged on the inner side surface of an elevator shaft and is used for supporting the anti-falling plate after the anti-falling plate is opened; the safety guard bar is characterized by further comprising a frame unit used for installing the safety guard bar plate, a trigger post unit arranged on the safety guard bar plate, and a locking post unit arranged on the frame unit and popped up to clamp the safety guard bar plate after the safety guard bar plate presses down the trigger post unit.

Preferably, the guard stretcher plate is provided with a trigger post groove for mounting the trigger post unit; the frame unit comprises frames arranged on the left side and the right side of the protective stretcher plate, a transmission column groove arranged on the frames and communicated with the trigger column groove, an initial limiting column groove communicated with the transmission column groove, and a locking column groove used for installing the locking column unit and communicated with the initial limiting column groove; the trigger post unit comprises a trigger post arranged in the trigger post groove, a trigger post spring used for jacking up the trigger post, a transmission post arranged on the trigger post and arranged in the transmission post groove, and a starting limit post arranged on the transmission post and arranged in the starting limit post groove; the locking post unit comprises a locking post part installed in the locking post groove, a locking post spring used for jacking the locking post part outwards, and a limiting groove arranged on the locking post part and used for clamping the initial limiting post.

Preferably, the frame unit further comprises a tail end limiting column groove arranged on the frame; the locking post unit further comprises a tail end limiting post and a tail end limiting post spring, wherein the tail end limiting post is installed in the tail end limiting post groove and used for clamping the limiting groove when the locking post part is opened outwards, and the tail end limiting post spring is used for outwards jacking the tail end limiting post.

Preferably, the transverse length ratio of the locking post part to the fall-preventing plate is 1:5-10.

Preferably, the trigger post unit further comprises a guide hole arranged on the transmission post, and a guide post arranged on the inner groove surface of the transmission post groove and mounted in the guide hole.

Preferably, the triggering post unit further comprises a soft pad disposed on the top surface of the triggering post.

Preferably, the locking post portion includes an outer post, an inner post, an insertion block provided on the outer post, and an insertion groove provided on the inner post for mounting the insertion block.

Preferably, the locking post further includes an inner bolt hole provided in the inner post and communicating with the insertion groove, an outer bolt hole provided in the insertion block, and a locking bolt fitted in the inner bolt hole and the outer bolt hole.

Preferably, the left side and the right side of the protection stretcher plate are provided with trigger column units and locking column units matched with the trigger column units.

A passenger ladder comprises the passenger ladder anti-falling device.

In summary, the invention has the following beneficial effects:

firstly, after the anti-falling plate is lapped on the protective stretcher plate, the triggering post is pressed down by the falling gravity of the passenger elevator, so that the locking post is automatically popped out to lock the anti-falling plate;

secondly, after the locking column is popped out, the locking column is locked again by the tail end limiting column arranged at the notch, so that the locking column is prevented from sliding out of the groove body due to small movement of the passenger elevator;

thirdly, a guide post is arranged on the transmission post, so that the transmission post keeps moving in a vertical state when being connected between the trigger post and the locking post, and the phenomenon of blocking is avoided;

fourthly, the locking post comprises two inside and outside posts, and after rescue work, thereby the accessible is dismantled the locking bolt wherein and is made two inside and outside post separation make the locking post disintegrate to the spacing action of cancellation to preventing weighing down the board.

Drawings

FIG. 1 is a schematic diagram of a first embodiment;

FIG. 2 is a schematic view of the fall arrest plate not resting on the safety fence;

FIG. 3 is a schematic view of the fall arrest plate of FIG. 2 when resting on a protective stretcher;

FIG. 4 is a more detailed schematic view of the trigger post unit and the locking post unit;

FIG. 5 is a schematic view of the fall arrest plate of FIG. 4 riding on a safety fence (but not fully riding thereon, with a portion blocking the locking post);

FIG. 6 is a schematic view of the fall arrest plate of FIG. 4 riding on a fender guard;

FIG. 7 is a schematic view of FIG. 4 including the guide post, cushion mounting location;

FIG. 8 is a schematic view of the mounting position of the end stop post;

FIG. 9 is a schematic view of the locking post section wherein the inner post and outer post are not installed together;

fig. 10 is a schematic view of the inner and outer columns of fig. 9 mounted together.

In the drawings, the reference numerals denote the following components: the anti-falling plate comprises an anti-falling plate 1, a protective stretcher plate 2, a frame unit 3, a trigger column unit 4, a locking column unit 5, a trigger column groove 201, a frame 301, a transmission column groove 302, a starting limit column groove 303, a locking column groove 304, a tail end limit column groove 305, a trigger column 401, a trigger column spring 402, a transmission column 403, a starting limit column 404, a guide hole 405, a guide column 406, a cushion 407, a locking column part 501, a locking column spring 502, a limit groove 503, a tail end limit column 504, a tail end limit column spring 505, an outer column 501a, an inner column 501b, an insertion block 501c, an insertion groove 501d, an inner bolt hole 501e, an outer bolt hole 501f and a locking bolt 501g.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

In the first embodiment, as shown in fig. 1 to 10, a passenger elevator anti-falling device comprises an anti-falling plate 1 which is arranged on the side surface of a passenger elevator and is opened after a steel wire rope for dragging the passenger elevator is broken, and a protective stretcher plate 2 which is arranged on the inner side surface of an elevator shaft and is used for supporting the anti-falling plate 1 after the anti-falling plate is opened; the safety guard bar device further comprises a frame unit 3 used for installing the safety guard bar plate 2, a triggering column unit 4 arranged on the safety guard bar plate 2, and a locking column unit 5 arranged on the frame unit 3 and used for popping up to clamp the safety guard bar plate 2 after the safety guard bar plate 2 presses down the triggering column unit 4. For how the anti-falling plate 1 is opened after the towing wire rope is broken, and for how the anti-falling plate 1 acts on the protection stretcher plate 2 after being opened, reference is made to the background art, which is not repeated in this embodiment. As shown in fig. 2, when the fall-preventing plate 1 is not acting on the protection stretcher 2, the trigger post unit 4 protrudes outward, and when the passenger elevator breaks and falls due to the traction steel wire rope, as shown in fig. 3, when the fall-preventing plate 1 acts on the protection stretcher 2, the trigger post unit 4 protruding outward is pressed from top to bottom, and the fall-preventing plate 1 is locked from top to bottom by popping up the locking post unit 5, so that the fall-preventing plate 1 has a structure for limiting the movement of the fall-preventing plate at the top, the fall-preventing plate 1 is not easy to separate from the protection stretcher 2, and the shear force between the passenger elevator and the protection stretcher 2 on the fall-preventing plate 1 is reduced. The whole linkage logic is as follows: the anti-falling plate 1 is opened, falls onto the protective stretcher plate 2, presses down the trigger post unit 4, and the trigger post unit 4 drives the locking post unit 5 to pop out, so that the anti-falling plate 1 is locked.

The specific structure and linkage of each unit will be described in detail below.

< about how the trigger post unit 4 brings the locking post unit 5 to pop out >

The guard stretcher plate 2 is provided with a trigger post groove 201 for installing the trigger post unit 4; the frame unit 3 comprises frames 301 arranged at the left and right sides of the protective stretcher 2, a transmission column groove 302 arranged on the frame 301 and communicated with the trigger column groove 201, a starting limit column groove 303 communicated with the transmission column groove 302, and a locking column groove 304 used for installing the locking column unit 5 and communicated with the starting limit column groove 303; the triggering post unit 4 comprises a triggering post 401 installed in the triggering post groove 201, a triggering post spring 402 for jacking up the triggering post 401, a transmission post 403 arranged on the triggering post 401 and installed in the transmission post groove 302, and a start limit post 404 arranged on the transmission post 403 and installed in the start limit post groove 303; the lock cylinder unit 5 includes a lock cylinder portion 501 fitted in the lock cylinder groove 304, a lock cylinder spring 502 for lifting up the lock cylinder portion 501 outward, and a stopper groove 503 provided on the lock cylinder portion 501 for catching the start stopper cylinder 404. As shown in fig. 4, the triggering post 401 protrudes outward under the action of the triggering post spring 402 at ordinary times, as shown in fig. 5, when the falling-prevention plate 1 presses the triggering post unit 4, actually presses on the top surface of the triggering post 401, which causes the triggering post 401 to sink, and drives the transmission post 403 on one side to sink together, so as to drive the initial limiting post 404 disposed at the left end of the transmission post 403 to sink, until the top end of the initial limiting post 404 is disengaged from the limiting groove 503, and under the release of the elastic potential energy of the locking post spring 502, the locking post portion 501 pops out along the locking post groove 304, and at this time, the falling-prevention plate 1 has not fallen completely, and the side edge of the falling-prevention plate 1 props up the outer end of the locking post portion 501. As shown in fig. 6, when the fall arrest plate 1 is completely dropped, the locking post portion 501 passes over the fall arrest plate 1 and is engaged therewith to prevent the fall arrest plate 1 from being separated from the safety fence 2. As for the design reason that the anti-falling plate 1 is not completely fallen, the side edge of the anti-falling plate 1 props against the outer end of the locking post part 501, the reason is that at the moment when the anti-falling plate 1 and the protection stretcher 2 are in initial contact, the anti-falling plate 1 is subjected to the acting force from the opposite direction of the protection stretcher 2, so that the anti-falling plate 1 is bounced, at this moment, if the protection function of the locking post part 501 is not available, the anti-falling plate is easy to separate from the protection stretcher 2 to cause danger, and when the side edge of the locking post part 501 props against the outer end of the locking post part 501, the locking post part 501 can come above the anti-falling plate 1 to play a protection function in the first time.

In order to achieve both the ejection speed and the blocking effect on the safety brake lining 1, the transverse length ratio of the locking leg 501 to the safety brake lining 1 is preferably 1:5-10.

< mode of re-locking after ejection of locking post portion 501>

The frame unit 3 further comprises an end limit post slot 305 provided on the frame 301; the locking post unit 5 further includes a distal end restraining post 504 fitted in the distal end restraining post groove 305 and adapted to engage with the restraining groove 503 when the locking post portion 501 is opened outward, and a distal end restraining post spring 505 for urging the distal end restraining post 504 outward.

As shown in fig. 4 and 5, when the locking post 501 is not completely ejected from the locking post groove 304, the side edge of the locking post 501 pushes the end-limiting post 504 into the end-limiting post groove 305, and when the locking post 501 is completely ejected from the locking post groove 304, as shown in fig. 6, the position of the end-limiting post 504 is aligned with the position of the end-limiting post 503, and the end-limiting post 504 is ejected by the end-limiting post spring 505 and engages with the position-limiting groove 503, thereby fixing the locking post 501 so that it cannot move.

< locking post part 501>

As shown in fig. 9 and 10, the locking post portion 501 includes an outer post 501a and an inner post 501b, an insertion block 501c provided on the outer post 501a, and a mating groove 501d provided on the inner post 501b for mounting the insertion block 501 c. The inner column 501b is always located in the locking column groove 304 when the locking column 501 is moved, and the outer column 501a is located outside the locking column groove 304 when the locking column 501 is ejected, i.e. the part of the locking column 501 acting on the fall protection plate 1 is the outer column 501a, and the outer column 501a and the inner column 501b are connected together by means of the insertion block 501c inserted into the insertion groove 501d.

Further, the lock cylinder portion 501 includes an inner cylinder hole 501e provided on the inner cylinder 501b and communicating with the insertion groove 501d, an outer cylinder hole 501f provided on the insertion block 501c, and a lock cylinder 501g installed in the inner cylinder hole 501e and the outer cylinder hole 501 f. After the outer column 501a and the inner column 501b are connected together by inserting the insertion block 501c into the insertion groove 501d, the inner bolt hole 501e and the outer bolt hole 501f are aligned to form a hole, and the locking bolt 501g is inserted into the hole to fix the inner bolt hole 501e and the outer bolt hole 501f, so that the outer column 501a and the inner column 501b are fixed. When the passenger ladder is rescued, the position of the passenger ladder needs to be readjusted, and at the moment, the anti-falling plate 1 is required to be detached, or the anti-falling plate 1 is moved away from the protection stretcher plate 2, so that the direct detachment of the anti-falling plate 1 is difficult, so that the locking column part 501 is moved away from the upper part of the anti-falling plate 1 in a best mode, so that the anti-falling plate 1 is moved away from the protection stretcher plate 2. The moving way is to pull the locking bolt 501g out of the hole formed by the inner bolt hole 501e and the outer bolt hole 501f, then move the outer column 501a along the horizontal direction, and pull the insertion block 501c out of the insertion groove 501d, in practice, only the locking bolt 501g is pulled out of the hole formed by the inner bolt hole 501e and the outer bolt hole 501f, and then the outer column 501a can be separated from the inner column 501b by slight movement of the falling-preventing plate 1 by moving the passenger ladder.

< other auxiliary device >

As shown in fig. 7, the trigger post unit 4 further includes a guide hole 405 provided on the driving post 403, and a guide post 406 provided on the groove surface in the driving post groove 302 and fitted in the guide hole 405. The inventor finds in the test that when the falling prevention plate 1 presses down the trigger column 401, there is a possibility that the right end of the transmission column 403 descends faster than the left end, so that the initial limit column 404 does not fall straightly along the vertical direction, and this results in the initial limit column 404 being stuck between the limit groove 503 and the initial limit column groove 303, so the effect of the guide column 406 is that when the trigger column 401 drives the transmission column 403 to descend, the left end and the right end keep descending at the same speed, and the phenomenon of sticking is avoided.

In addition, the firing post unit 4 further includes a cushion 407 disposed on the top surface of the firing post 401. Prevent weighing down board 1 and can send huge sound when first contact pushes down trigger post 401, and this kind of sound is greatly influenced to treating rescue personnel in being in the object in the panic, so set up cushion 407 and can reduce this kind of sound to a certain extent, help flatly recovering stranded personnel's in the object mood, the expansion of the follow-up rescue work of being convenient for.

Furthermore, references to "vertical," "horizontal," "top," "bottom," "front," "back," "upper," "lower," "inner," "outer," and the like in embodiments of the invention are made based on the orientation or positional relationship shown in the drawings, or as the article is customarily placed in use, for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered as limiting of the invention.

Claims (10)

1. A passenger elevator anti-falling device comprises an anti-falling plate (1) which is arranged on the side surface of a passenger elevator and is opened after a steel wire rope for dragging the passenger elevator is broken, and a protective stretcher plate (2) which is arranged on the inner side surface of an elevator shaft and is used for supporting the anti-falling plate (1) after the anti-falling plate is opened; the safety stretcher is characterized by further comprising a frame unit (3) used for installing the safety stretcher plate (2), a triggering column unit (4) arranged on the safety stretcher plate (2), and a locking column unit (5) arranged on the frame unit (3) and popped up to clamp the safety stretcher plate (2) after the safety stretcher plate (2) presses down the triggering column unit (4).

2. The passenger elevator anti-falling device according to claim 1, characterized in that the protective stretcher plate (2) is provided with a triggering post groove (201) for installing the triggering post unit (4); the frame unit (3) comprises frames (301) arranged on the left side and the right side of the protective stretcher plate (2), a transmission column groove (302) arranged on the frames (301) and communicated with the trigger column groove (201), a starting limit column groove (303) communicated with the transmission column groove (302), and a locking column groove (304) used for installing the locking column unit (5) and communicated with the starting limit column groove (303); the trigger column unit (4) comprises a trigger column (401) installed in the trigger column groove (201), a trigger column spring (402) used for jacking up the trigger column (401), a transmission column (403) arranged on the trigger column (401) and installed in the transmission column groove (302), and a starting limit column (404) arranged on the transmission column (403) and installed in the starting limit column groove (303); the locking column unit (5) comprises a locking column part (501) installed in the locking column groove (304), a locking column spring (502) used for jacking the locking column part (501) outwards, and a limiting groove (503) arranged on the locking column part (501) and used for clamping the initial limiting column (404).

3. A passenger conveyor fall protection device according to claim 2, characterized in that the frame unit (3) further comprises an end limit post slot (305) provided on the frame (301); the locking post unit (5) further comprises a terminal limiting post (504) which is arranged in the terminal limiting post groove (305) and is used for clamping the limiting groove (503) when the locking post part (501) is opened outwards, and a terminal limiting post spring (505) which is used for outwards jacking the terminal limiting post (504).

4. The passenger elevator anti-falling device according to claim 2, wherein the transverse length ratio of the locking pillar portion (501) to the anti-falling plate (1) is 1:5-10.

5. The passenger elevator fall protection device according to claim 2, wherein the triggering post unit (4) further comprises a guide hole (405) provided on the driving post (403), and a guide post (406) provided on the inner groove surface of the driving post groove (302) and installed in the guide hole (405).

6. A passenger conveyor fall arrest device according to claim 2, characterized in that the triggering post unit (4) further comprises a cushion (407) arranged on the top surface of the triggering post (401).

7. The passenger elevator fall arrest device according to claim 2, characterized in that the locking post section (501) comprises an outer post (501 a) and an inner post (501 b), an insert block (501 c) provided on the outer post (501 a), and an insert groove (501 d) provided on the inner post (501 b) for mounting the insert block (501 c).

8. The passenger elevator fall preventing device according to claim 7, wherein the locking pillar portion (501) further comprises an inner bolt hole (501 e) provided on the inner pillar (501 b) and communicating with the insertion groove (501 d), an outer bolt hole (501 f) provided on the insertion block (501 c), and a locking bolt (501 g) installed in the inner bolt hole (501 e) and the outer bolt hole (501 f).

9. The passenger elevator anti-falling device according to claim 1, characterized in that the left and right sides of the protective stretcher plate (2) are provided with a triggering post unit (4) and a locking post unit (5) matched with the triggering post unit.

10. A passenger elevator comprising the passenger elevator fall arrest device according to any one of claims 1 to 9.

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