CN110407065B

CN110407065B - Toe guard height adjustment device and elevator device system

Info

Publication number: CN110407065B
Application number: CN201810401129.1A
Authority: CN
Inventors: 恩旺; 夏学涛; 韦峰
Original assignee: Institute of Building Mechanization of Chinese Academy of Building Research
Current assignee: Beijing Construction Mechanization Research Institute Co ltd
Priority date: 2018-04-28
Filing date: 2018-04-28
Publication date: 2022-04-29
Anticipated expiration: 2038-04-28
Also published as: CN110407065A

Abstract

The invention provides a device for adjusting the height of a toe guard, which is used for adjusting the height of the toe guard in the lifting process of a lift car and comprises a first slideway, a sliding rail, a first connecting piece and a second connecting piece, wherein the first connecting piece and the second connecting piece are respectively fixed below the bottom of the lift car; the device for adjusting the height of the foot protection plate further comprises a foot protection plate component and a foot protection plate supporting mechanism, wherein the foot protection plate component comprises a plurality of foot protection plates which are sequentially connected; the foot guard plate close to the ground end close to the ground is hinged with the foot guard plate supporting mechanism, and the foot guard plate far away from the ground end is arranged on the first slide way and can freely slide in the first slide way; the lift car moves downwards, and when the toe guard at the near-ground end abuts against the ground, the toe guard at the far-ground end is guided by the first slide way and drives the toe guard assembly to move along the first slide way so as to be accommodated; in addition, the invention also provides an elevator device system.

Description

Toe guard height adjustment device and elevator device system

Technical Field

The invention relates to the field of buildings, in particular to a toe guard height adjusting device and an elevator device system, belonging to the field.

Background

At present, with the aggravation of the aging problem in China, the weak old people and the people with special problems in body have a lot of difficulties in the traveling process, and particularly, in the buildings built in the last century, the seven-storey and below-storey houses are not provided with elevators generally, so that the people have great troubles in the process of going upstairs and downstairs, and therefore, the problems are solved by installing the elevators generally. However, the underground surrounding the residence is usually paved with infrastructures such as gas pipelines, sewer pipelines, power supply cables and the like, the minimum distance between the infrastructures and the ground is usually 300mm, the depths cannot meet the depth required by the current standard, and some non-standard buildings do not have enough pit depth for installing elevators. The solution to the above problem is to remove the infrastructure and to reduce the depth of the pit. The first approach has two problems, one is high cost and the other is a safety problem. Therefore, it is usually the only option to reduce the standard of the pit depth of the elevator, and the common standard requirement is that the height of the vertical part of the toe guard should not be less than 750mm, according to which height the car toe guard will collide with the ground when the elevator runs to the lowest floor, therefore, in order to both ensure the safety required by the elevator standard and meet the actual situation in the field, the present invention provides a method and a device for solving the above-mentioned problems.

Disclosure of Invention

In view of the above problems in the prior art, it is an object of the present invention to provide a height adjustable device for a toe guard that can be adapted to different field environments and is inexpensive.

In order to achieve the purpose, the embodiment of the invention adopts the technical scheme that:

a toe guard height adjustable device is used for adjusting the height of a toe guard in the lifting process of a lift car and comprises a first slide way, a slide rail, a first connecting piece and a second connecting piece, wherein the first connecting piece and the second connecting piece are respectively fixed below the bottom of the lift car;

the toe guard height-adjustable device further comprises: the foot protection plate component comprises a plurality of sequentially-linked foot protection plates; wherein the content of the first and second substances,

the foot guard plate close to the ground end is hinged with the foot guard plate supporting mechanism, and the foot guard plate far away from the ground end is arranged on the first slide way and can freely slide in the first slide way;

the foot protection plate supporting mechanism is arranged on the sliding rail to slide so as to support the foot protection plate at the near-ground end in the motion process of the foot protection plate component and limit the position of the foot protection plate at the near-ground end;

the lift car moves downwards, when the foot guard plate at the near-ground end abuts against the ground, the ground generates an upward acting force on the foot guard plate, and the foot guard plate at the far-ground end is guided by the first slide way and drives the foot guard plate assembly to move along the first slide way so as to be accommodated;

the direction of accomodating of first slide with the direction of motion of car is the angle.

Preferably, the toe guard height adjusting device further comprises a locking hook device for interfering with the sliding of the toe guard support mechanism on the sliding rail; the latch hook device includes: the second slide way and the lever device are fixedly arranged on the second connecting piece respectively; the stop block can move along a second slide way in the lifting direction of the car; one end of the lever device is hinged with the blocking block, the other end of the lever device serves as a trigger end, and the lever device is touched with the ground to realize the movement of the blocking block.

Preferably, the lever device comprises a hinge point and a rotating rod rotating around the hinge point, wherein the hinge point of the lever device is arranged on the second connecting piece, one end of the rotating rod is hinged with the blocking block, and the other end of the rotating rod is configured as the trigger end and is provided with a second balancing weight.

Preferably, the toe guard support mechanism comprises a support rod and a slide block; one end of the supporting rod is hinged to the foot protection plate at the end close to the ground, the other end of the supporting rod is hinged to the sliding block, and the sliding block is slidably arranged on the sliding rail.

Preferably, four corners of each foot protection plate are provided with lugs, and two adjacent foot protection plates are connected through pins penetrating through the corresponding lugs.

Preferably, a first balancing weight is fixedly arranged on the foot protection plate at the ground end.

Preferably, the receiving direction of the first slideway and the moving direction of the car form an angle of 90 degrees.

In addition, the invention also provides an elevator device system which comprises a guide rail, a guide shoe and a pit and also comprises the above-mentioned foot guard height adjustable device, wherein a car of the foot guard height adjustable device moves in an area limited by the guide rail and the guide shoe.

Compared with the prior art, the invention has the beneficial effects that: the invention effectively improves the safety on the premise of meeting the standard requirements of the elevator and simultaneously reduces the cost required under the actual conditions of different sites.

Drawings

Fig. 1 is a schematic view of the car of the present embodiment as it travels and viewed from the side;

fig. 2 is a schematic view of the cage of the present embodiment as it travels and viewed from the front;

FIG. 3 is a schematic view of the height-adjustable device for a toe guard of the present embodiment;

fig. 4 is a schematic view of the toe guard height adjustment apparatus of the present embodiment as viewed from the front;

FIG. 5 is a schematic view showing the toe guard assembly viewed from the front and side, with portions (a), (b) shown diagrammatically, respectively;

fig. 6 is a schematic view of a toe guard support mechanism and a latch hook device of the toe guard height adjustment apparatus of the present embodiment;

fig. 7 is a partial schematic view of a toe guard support mechanism of the toe guard height adjustment apparatus of the present embodiment;

fig. 8 is a partial schematic view of the first slide rail of the toe guard height adjustment device of the present embodiment.

Description of the reference numerals

1 foot protection plate component 2, first slide rail 3, sliding rail 4, first connecting piece 5 and second connecting piece

6 first balancing weight 8 toeguard supporting mechanism 9 latch hook devices

10 near ground end foot guard 11 far ground end foot guard 12 support rod 13 slide block

14 stop block 15, second slide way 16, lever device 17, hinge point 18, second counter weight

20 cage 21 guide rail 22 guide shoe 23 elevator shaft 24 cage sill

25 pit collision block 26 pit 30 car bottom frame

Detailed Description

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.

With reference to fig. 1 to 8, an embodiment of the present invention discloses a toe guard height adjusting device, which is used for adjusting the height of a toe guard in the lifting process of a car 20, and the toe guard height adjusting device includes a first slide rail 2, a slide rail 3, a first connecting member 4 and a second connecting member 5, wherein the first connecting member 4 and the second connecting member 5 are respectively fixed below a car bottom frame 30 of the car 20, specifically referring to fig. 1 to 4, in this embodiment, a car sill 24 is further connected between one side of an elevator door of the car bottom frame 30 and an elevator shaft 23, the car sill 24 and the car bottom frame 30 are in the same plane, when the elevator door is opened, a very small gap is maintained between the car 20 and the floor of a corridor, so as to avoid the occurrence of potential safety hazards; the first slide way 2 is arranged on the first connecting piece 4, and the slide rail 3 is arranged on the second connecting piece 5; in this embodiment, the specific connection manner can be adjusted according to actual conditions on site, for example, the first slide rail 2 and the slide rail 3 can be respectively and directly fixed below the platform frame 30 of the car 20 without using the first connecting member 4 and the second connecting member 5; or integrally formed with the first connecting member 4 and the second connecting member 5; or fixedly arranged on the first connecting piece 4 and the second connecting piece 5 through bolts; that is, it is not limited thereto.

With reference to fig. 1 to 4, the toe guard height adjustment apparatus further includes: the foot protection plate component 1 comprises a plurality of sequentially linked foot protection plates; the toe guard 10 close to the ground end close to the ground is hinged with the toe guard supporting mechanism 8, and the toe guard 11 far from the ground end far away from the ground is arranged on the first slide way 2 and can freely slide in the first slide way; the toe guard support mechanism 8 is arranged to slide on the slide rail 3 to support the toe guard 10 at the near ground end during the movement of the toe guard assembly 1 and to define the position of the toe guard 10 at the near ground end.

In order to enable the toe guard assembly 1 to be vertically downward and avoid the toe guard assembly 1 from swinging in the horizontal direction when the car 20 moves up and down in the elevator hoistway 23, particularly when the car 20 is located anywhere except in the pit 26, the toe guard assembly 1 should always be kept vertically downward for safety reasons, and in case of an emergency, it can be ensured that the toe guard assembly 1 must be kept stationary in the vertical direction after the car 20 is braked; in this regard, the toe guard support mechanism 8 plays an important role.

Referring to fig. 3 to 7, the toe guard support mechanism 8 includes a support rod 12 and a slider 13; one end of the support rod 12 is hinged to the foot protection plate 10 at the near-ground end, the other end of the support rod 12 is hinged to the sliding block 13, and the sliding block 13 is slidably arranged on the sliding rail 3. In this embodiment, the end of the support rod 12 hinged to the toe guard 10 near the ground end may also be directly hinged to the first counterweight 6, specifically without further limitation, and may be selected accordingly according to actual conditions on site, and the triangular support formed by the toe guard assembly 1, the support rod 12 and the slide rail 3 may effectively provide reliable and safe support for the toe guard assembly 1 to remain stationary in the vertical direction in case of an emergency in the car 20.

In addition, referring to fig. 1 to 4, when the car 20 moves downward and the toe guard 10 at the near end abuts against the ground, the ground generates an upward acting force on the toe guard, and the toe guard 11 at the far end is guided by the first slideway 2, thereby driving the toe guard assembly 1 to move along the first slideway 2 to be stored.

In order to facilitate the storage of the foot protection plate assembly 1, particularly, four corners of each foot protection plate are provided with lugs, and two adjacent foot protection plates are connected in a chain manner by penetrating pins in the corresponding lugs; in the present embodiment, the width of each toe guard is not limited, and can be adjusted accordingly according to the depth of the pit 26, preferably, 10-20 cm; particularly, in this embodiment, the two toe guards may be linked in other manners, for example, by correspondingly and matchably pivoting or looping, and the positions of the two toe guards are correspondingly adjusted according to different linking manners, which is not limited herein.

In order to realize that the weight of the toe guard assembly 1 is borne by the runners after the toe guard assembly 1 is moved to be stored, and therefore, the storage direction of the first runner 2 and the movement direction of the car 20 are at an angle of 90 °, it should be noted that, in the present embodiment, the angle is not absolute, and particularly, at the position where the first runner 2 and the toe guard assembly 1 are first in contact, and particularly, in order to smoothly store the toe guard assembly 1 into the first runner 2, a corresponding transition region needs to be provided on the first runner 2, and in the present embodiment, the storage direction of the first runner 2 and the movement direction of the car 20 are provided at an angle, for example, preferably, a region having an angle of more than 45 ° with the horizontal direction.

In order to facilitate the stored toe guard assembly 1 to smoothly slide out of the first slideway 2 when the car 20 ascends, particularly, in the embodiment, the first counterweight block 6 is fixedly arranged on the toe guard 10 at the end close to the ground, and the toe guard assembly 1 can also smoothly slide out by increasing downward gravity, so that the toe guard assembly 1 is stored and slid out of the first slideway 2 only by the reaction force of the ground and the gravity of the first counterweight block 6, and therefore, the embodiment of the invention also has the beneficial effects of simple scheme and cost saving, and the use of a motor for providing power is avoided.

In addition, in the present embodiment, with reference to fig. 1 and 8, the first connecting member 4, the second connecting member 5, the first slideway 2 and the sliding rail 3 are correspondingly arranged in pairs; in this embodiment, the first connecting element 4 and the second connecting element 5 can also be designed as a connecting plate (not shown), i.e. the first slideway 2 and the sliding rail 3 are respectively arranged on both sides of the connecting plate, typically the two first slideways 2 are arranged on the side facing away from the elevator shaft 23, and the two sliding rails 3 are arranged on the side facing the elevator shaft 23, so that the slideways can receive the toe guard assembly 1, and the sliding rails 3 can be connected with the toe guard support means 8.

In order to effectively interfere the sliding of the toe guard support mechanism 8 on the slide rail 3, the toe guard height adjusting device further comprises a latch hook device 9; wherein the latch hook device 9 comprises: the stop block 14, the second slideway 15 and the lever device 16, wherein the second slideway 15 and the lever device 16 are respectively and fixedly arranged on the second connecting piece 5; the stopper 14 is movable along a second slide way 15 in a direction in which the car 20 ascends and descends; one end of the lever device 16 is hinged with the stopper 14, and the other end is used as a trigger end, so that the stopper 14 can move by touching the ground.

Referring to fig. 6, the lever device 16 includes a hinge point 17 and a rotating rod rotating around the hinge point 17, wherein the hinge point 17 of the lever device 16 is disposed on the second connecting member 5, one end of the rotating rod is hinged to the blocking block 14, the other end of the rotating rod is configured as the trigger end and is provided with a second counterweight 18, and the torque generated by the second counterweight 18 is larger than the torque generated by the slider.

In the present embodiment, after the car 20 reaches the pit 26, the pit collision block 25 is particularly provided in the pit 26, and the pit collision block 25 and the second counter weight block 18 are provided in correspondence with each other in the moving direction of the car 20, so that the second counter weight block 18 can contact the pit collision block 25 after the car 20 enters the pit 26. The foregoing touch process and the operation of the latch hook device 9 are further described in detail below, specifically as follows:

with reference to fig. 3 to 7, after the car 20 enters the pit 26, the second counterweight block 18 touches the pit bump 25 corresponding thereto, and it is emphasized that this action precedes the action of the toe guard 10 near the ground touching the surface of the pit 26, so that the lever device 16 rotates counterclockwise around the intersection point by the lever action, see fig. 6 in particular, and drives the blocking block 14 to move downward in the second slideway 15 until the blocking block 14 no longer blocks the slider 13 of the toe guard support mechanism 8, at which time the slider 13 can move on the slideway 3 in the direction of receiving the toe guard assembly 1, and when the toe guard 10 near the ground of the toe guard assembly 1 touches the pit 26, the toe guard 11 at the far end of the toe guard assembly 1 starts to be received by the first slideway 2 in the opposite direction of the downward movement of the car 20 under the reaction force exerted by the toe guard 10 near the ground of the pit 26, and is further housed along the horizontal direction by providing a corresponding transition zone on the first ramp 2; at the same time, the movement of the toe guard assembly 1 causes the slider 13 of the toe guard support mechanism 8 to move in the direction in which the toe guard assembly 1 is stored, and the movement of the toe guard assembly 1 and the slider 13 of the toe guard support mechanism 8 stops simultaneously with the movement of the car 20 until the car 20 reaches the height set by the pit 26.

Also in connection with fig. 1 to 6, when the car 20 moves upwards, since the second counterweight 18 touches the pit strike 25 before the toe guard assembly 1 touches the pit 26, that is, the second counterweight 18 is separated from the pit 26 later than the toe guard assembly 1 is separated from the pit 26, but in order to avoid the sliding block 13 from being blocked by the blocking block 14 when retracting, in the present embodiment, in particular, the end of the blocking block 14 on the side facing the hinge point 17 is provided with a slope, preferably at an angle of 45 ° to the horizontal.

In addition, when the car 20 is out of order at a position except the pit 26, the toe guard assembly 1 fixed at this time plays a very important role in safely rescuing passengers in the car 20, because the blocking block 14 acts under the lever principle of the lever device 16, in the present embodiment, under the action of the second counterweight block 18, the blocking block 14 always blocks the further movement of the slider 13 of the toe guard support mechanism 8 in the direction in which the toe guard assembly 1 is accommodated, that is, the toe guard assembly 1 is fixed under the car 20, so that when the door of the car 20 is opened, most extremely, the car 20 door is in the middle of the elevator door and between two floors, at this time, passengers in the car 20 need to abut against the floor surface of the safe conduction floor by means of the support of the toe guard assembly 1, the toe guard assembly 1 at this time plays a role not only in safely supporting, also serves as a guard to isolate the floor level from the hoistway 23.

In addition, the present invention provides an elevator apparatus system including a guide rail 21, a guide shoe 22, and a pit 26, and a toe guard height adjustable device whose car 20 moves within an area defined by the guide rail 21 and the guide shoe 22.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. A toe guard height adjustable device is used for adjusting the height of a toe guard in the lifting process of a lift car and comprises a first slide way, a slide rail, a first connecting piece and a second connecting piece, wherein the first connecting piece and the second connecting piece are respectively fixed below the bottom of the lift car; it is characterized in that the preparation method is characterized in that,

2. The toe guard height adjustment device according to claim 1, further comprising a locking hook device for interfering with sliding of the toe guard support mechanism on the slide rail; the latch hook device includes: the second slide way and the lever device are fixedly arranged on the second connecting piece respectively; the stop block can move along a second slide way in the lifting direction of the car; one end of the lever device is hinged with the blocking block, the other end of the lever device serves as a trigger end, and the lever device is touched with the ground to realize the movement of the blocking block.

3. A toe guard height adjustment device according to claim 2, wherein the lever device comprises a pivot point and a rotary rod rotating around the pivot point, wherein the pivot point of the lever device is arranged on the second connector, one end of the rotary rod is hinged with the blocking block, and the other end of the rotary rod is configured as the triggering end and is provided with a second counterweight.

4. The toe guard height adjustment arrangement of claim 2, wherein the toe guard support mechanism comprises a support bar and a slide block; one end of the supporting rod is hinged to the foot protection plate at the end close to the ground, the other end of the supporting rod is hinged to the sliding block, and the sliding block is slidably arranged on the sliding rail.

5. The device for adjusting the height of the foot protection plate as claimed in claim 1, wherein four corners of each foot protection plate are provided with lugs, and two adjacent foot protection plates are connected through pins penetrating through the corresponding lugs.

6. The device as claimed in claim 1, wherein a first weight is fixed to the toe guard near the ground.

7. The toe guard height adjustment device according to claim 1, wherein a receiving direction of the first slide way is at an angle of 90 ° to a moving direction of the car.

8. An elevator installation system comprising a guide rail, a guide shoe and a pit, characterized by further comprising a toe guard height adjustable device according to any of claims 1 to 7, the car of which moves within an area defined by the guide rail and the guide shoe.