CN219823353U - Safety protection device suitable for escalator and moving walk - Google Patents
Safety protection device suitable for escalator and moving walk Download PDFInfo
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- CN219823353U CN219823353U CN202321010229.4U CN202321010229U CN219823353U CN 219823353 U CN219823353 U CN 219823353U CN 202321010229 U CN202321010229 U CN 202321010229U CN 219823353 U CN219823353 U CN 219823353U
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- escalator
- friction disc
- electromagnet
- escalators
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- 230000003068 static effect Effects 0.000 claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- Escalators And Moving Walkways (AREA)
Abstract
The utility model discloses a safety protection device suitable for an escalator and a moving pavement, which comprises an additional braking device, wherein the additional braking device comprises a shell, an electromagnet, a static friction disc, a dynamic friction disc and a flange disc, the electromagnet, the static friction disc, the dynamic friction disc and the flange disc are coaxially arranged, friction surfaces of the static friction disc and the dynamic friction disc are opposite and can be attached under the action of the electromagnet, the flange disc is connected with the dynamic friction disc, and the flange disc is used for being connected with a main driving wheel in the escalator or the moving pavement. The utility model has the advantages of providing an additional braking mode for the escalator and the moving walk, and being used for braking the elevator when the working brake of the escalator or the moving walk fails or extreme conditions such as bearing fracture, failure of the driving wheel chain and the like occur, thereby improving the safety of the elevator.
Description
Technical Field
The utility model relates to the technical field of elevator equipment, in particular to a safety protection device suitable for an escalator and a moving walk.
Background
The escalator and the automatic sidewalk are widely applied to public places such as markets, supermarkets and subways, can greatly relieve people flow pressure, provide riding convenience for passengers to walk between floors, and are important travel tools. Compared with a vertical elevator, the escalator and the moving sidewalk have the characteristics of strong passenger carrying capacity, long starting and braking interval time, high integration, single running direction and the like, and the safety of the escalator and the moving sidewalk is highly valued due to the fact that the frequent and long-term running brings a higher fault rate.
The working brake of the escalator and the moving pavement is an important safety protection device, and when the safety circuit is disconnected due to the action of the safety protection device, the working brake can timely act to stop running the escalator, so that the safety of pedestrians is protected. However, when the working brake fails (such as bearing fracture, failure of a driving wheel chain, etc.), overspeed occurs in overload, and the pedestrian cannot be effectively protected by stopping the working brake in reverse, a certain risk exists.
Disclosure of Invention
The utility model provides a safety protection device suitable for an escalator and a moving walk, which has the advantages of providing an additional braking mode for the escalator and the moving walk, and being used for braking an elevator when the working brake of the escalator or the moving walk fails or extreme conditions such as bearing fracture, driving wheel chain failure and the like occur, thereby improving the safety of the elevator.
The safety protection device for the escalator and the moving sidewalk is characterized by comprising an additional braking device, wherein the additional braking device comprises a shell, an electromagnet, a static friction plate, a dynamic friction plate and a flange plate, the electromagnet, the static friction plate, the dynamic friction plate and the flange plate are coaxially arranged, friction surfaces of the static friction plate and the dynamic friction plate are opposite and can be attached under the action of the electromagnet, the flange plate is connected with the dynamic friction plate, and the flange plate is used for being connected with a main driving wheel in the escalator or the moving sidewalk.
The utility model is further characterized in that the flange plate is connected with the mounting seat, the movable friction plate is provided with the mounting groove matched with the mounting seat, the movable friction plate is connected with the mounting seat through a plurality of connecting bolts with nuts, and the movable friction plate is connected with the mounting seat in a relatively movable way.
The utility model is further characterized in that at least one sliding block is arranged on the side face of the mounting seat, and a sliding groove matched with the sliding block is arranged in the mounting groove on the dynamic friction disk.
The utility model is further characterized in that the connecting bolt is provided with a reset spring for pushing the dynamic friction disc to move away from the static friction disc.
The utility model is further characterized in that a mounting shaft sleeve is arranged in the shell, a mounting shaft is arranged on the static friction disc, and the mounting shaft penetrates through the electromagnet and is arranged in the mounting shaft sleeve.
The utility model is further arranged in that the mounting shaft is provided with at least one flat key.
The utility model is further arranged such that the mounting shaft is of ferromagnetic material.
The utility model further provides that the additional braking device further comprises a protective cover which is connected with the shell and is used for covering the dynamic friction disc.
The utility model is further arranged that the electromagnet is connected with a control cabinet of the escalator or the moving walk, and when the control cabinet detects overspeed or reversion of the escalator or the moving walk, the electromagnet is controlled to be electrified.
The utility model further provides that the additional braking device further comprises a photoelectric sensor, an encoder and a controller, wherein the photoelectric sensor is arranged at a driving chain of the escalator or the moving walk, the encoder is arranged at a main driving wheel of the escalator or the moving walk, detection data of the photoelectric sensor and the encoder are output to the controller, and the electromagnet is controlled by the controller.
In summary, the beneficial effects of the utility model are as follows:
1. an additional braking mode is provided for the escalator and the moving sidewalk, and is used for braking the elevator when the working brake of the escalator or the moving sidewalk fails or extreme conditions such as bearing fracture, driving wheel chain failure and the like occur, so that the safety of the elevator is improved;
2. the utility model has simple structure and small occupied space, is suitable for most of escalator and moving sidewalk, has high reliability and is not easy to fail due to the simple structure, and can realize longer service life.
Drawings
Fig. 1 is a schematic view of the application of the utility model to an escalator or moving walkway;
fig. 2 is a schematic view of a typical drive structure of an escalator or moving walkway;
FIG. 3 is an exploded view of the additional brake device of the present utility model;
fig. 4 is a control schematic of an embodiment of the present utility model.
In the figure, 1, a main driving motor unit; 2. an additional braking device; 3. a protective cover; 11. a driving motor; 12. a speed reducer; 13. an output sprocket; 14. a main drive chain; 15. a photoelectric sensor; 16. a main driving wheel; 17. a step driving wheel; 18. a step drive chain; 21. a flange plate; 22. A nut; 23. a return spring; 24. a slide block; 25. a slider screw; 26. a dynamic friction plate; 27. a connecting bolt; 28. a static friction plate; 29. a flat key; 210. an electromagnet; 211. a housing; 212. an end cap; 213. and (5) fixing screws by the end cover.
Detailed Description
The following describes in detail the embodiments of the present utility model with reference to the drawings.
Examples: a safety protection device suitable for an escalator and a moving walk is used for being applied to the escalator or the moving walk.
A typical drive structure for an escalator or moving walkway is shown in fig. 1-2 and comprises a main drive motor 11 unit 1, a main drive wheel 16 and a step drive wheel 17, the main drive motor 11 unit 1 comprising a drive motor 11, the service brake of the elevator being normally connected to the drive motor 11 for braking the drive motor 11. The driving motor 11 drives the main driving wheel 16 to rotate through the speed reducer 12, the output sprocket 13 and the main driving chain 14, the main driving wheel 16 is coaxially connected with the step driving wheel 17, and the step driving wheel 17 drives the elevator to run through the step driving chain 18.
Failure of the service brake can result in the elevator failing to brake, as well as failure of the elevator to brake when bearing breaks occur in the mechanism or the main drive chain 14 breaks.
The safety protection device in the utility model, referring to fig. 1-3, comprises an additional braking device 2, wherein the additional braking device 2 comprises a shell 211, an electromagnet 210, a static friction disc 28, a dynamic friction disc 26 and a flange disc 21, the electromagnet 210, the static friction disc 28, the dynamic friction disc 26 and the flange disc 21 are coaxially arranged, the electromagnet 210 is arranged in the shell 211, friction surfaces of the static friction disc 28 and the dynamic friction disc 26 are opposite and can be attached under the action of the electromagnet 210, the flange disc 21 is connected with the dynamic friction disc 26, and the flange disc 21 is used for being connected with a main driving wheel 16 in an escalator or a moving walk.
The flange plate 21 is connected with a mounting seat, the movable friction plate 26 is provided with a mounting groove matched with the mounting seat, the movable friction plate 26 is connected with the mounting seat through a plurality of connecting bolts 27 with nuts 22, the movable friction plate 26 is connected with the mounting seat in a relatively movable mode, namely, the connecting bolts 27 and the nuts 22 do not compress the mounting seat and the movable friction plate 26 together, but a certain movable space is reserved, so that the movable friction plate 26 can axially move.
Two sliding blocks 24 are arranged on the side face of the mounting seat, the two sliding blocks 24 are symmetrically arranged, and the sliding blocks are mounted on the mounting seat through sliding block screws 25. The installation groove on the movable friction disk 26 is internally provided with a chute matched with the sliding block 24, and when the installation seat is connected with the movable friction disk 26, the sliding block 24 is positioned in the chute, so that the movable friction disk 26 can move along the axial direction. It should be noted that, a limit is formed between the nut 22 and the connecting bolt 27, and this limit satisfies: the mounting seat does not disengage from the dynamic friction disk 26 when the dynamic friction disk 26 is at a minimum distance from the static friction disk 28. The sliding block 24 can enable the dynamic friction disk 26 and the flange 21 to move axially and cannot rotate relatively, and the sliding block 24 simultaneously plays a role of bearing shearing force.
The connecting bolt is provided with a return spring 23 for pushing the movable friction disk 26 to move away from the static friction disk 28, and specifically, the return spring 23 is arranged on one side of the movable friction disk 26 close to the flange 21 and is in a compressed state.
A mounting shaft sleeve is arranged in the housing 211, and a mounting shaft is arranged on the static friction disk 28, passes through the electromagnet 210 and is arranged in the mounting shaft sleeve. The mounting shaft is provided with at least one flat key 29, which flat key 29 is intended to withstand shear forces.
The mounting shaft is made of ferromagnetic material, and the electromagnet 210 is magnetized after being electrified, so that the electromagnet 210 is easier to attract the movable friction disk 26 to approach.
The housing 211 is provided with a base for mounting the housing 211, and when mounted, the housing 211 is mounted at a position on one side of the main driving wheel 16 in the elevator, and the flange 21 and the main driving wheel 16 are connected by screws. The additional brake device 2 further comprises a protective cover 3 connected to the housing 211 for covering the dynamic friction disk 26. The end of the housing 211 is provided with an end cap 212, and the end cap 212 is connected to the housing 211 by an end cap connection screw 213.
The electromagnet 210 is connected with a control cabinet of the escalator or the moving walk, and when the control cabinet detects overspeed or reversion of the escalator or the moving walk, the electromagnet 210 is controlled to be electrified.
The principle of the utility model is as follows: when the escalator or the moving sidewalk normally operates, the driving sprocket of the steps, the pedals and the adhesive tapes drive the flange plate 21 to rotate, the flange plate 21 drives the movable friction plate 26 to rotate together through the sliding block 24, and when the control cabinet does not detect abnormality, the electromagnet 210 is powered off and is in the disconnection position, and the movable friction plate 26 and the static friction plate 28 are in the separation state.
When the control cabinet detects overspeed, reversion or broken driving chain, the additional braking device 2 acts, the electromagnet 210 is attracted, the attraction friction disc 26 moves axially along the sliding block 24 under the action of electromagnetic force, and finally the static friction disc 28 is extruded to realize braking.
The safety protection device is controlled to be powered off, the electromagnet 210 is powered off and reset, and the movable friction disk 26 is pulled to reset along the direction of the sliding block 24 under the action of the spring force of the reset spring 23.
In some embodiments thereof, referring to fig. 1-4, the additional brake device 2 is not connected to the elevator control cabinet, the additional brake device 2 further comprises a photoelectric sensor 15, an encoder and a controller, the photoelectric sensor 15 is arranged at the main driving chain 14 of the escalator or the moving walk, the encoder is arranged at the main driving wheel 16 of the escalator or the moving walk, the detection data of the photoelectric sensor 15 and the encoder are output to the controller, and the electromagnet 210 is controlled by the controller. The photoelectric sensor 15 detects the time between each link of the main driving chain 14 or the time taken for measuring the rotation period of the roller, the encoder detects the rotation speed of the main driving wheel 16, the calculation of the controller judges whether the elevator has overspeed reverse and chain breakage, and the like, and when the situation occurs, the controller controls the electromagnet 210 to electrically brake.
The main circuit of the electromagnet 210 is provided with a current sensor for detecting whether the electromagnet 210 is powered on, and the data of the current sensor is output to the controller, in addition, the controller can be connected with a mobile phone and a computer through wireless communication, so that a user can conveniently learn whether the additional braking device 2 acts.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.
Claims (10)
1. The utility model provides a safety arrangement suitable for automatic escalator and moving walk, its characterized in that includes additional arresting gear (2), additional arresting gear (2) include shell (211), electro-magnet (210), static friction disc (28), moving friction disc (26) and ring flange (21) coaxial setting, the friction surface of static friction disc (28) and moving friction disc (26) is relative and can laminate under the effect of electro-magnet (210), ring flange (21) are connected with moving friction disc (26), ring flange (21) are used for being connected with main drive wheel (16) in the automatic escalator or the moving walk.
2. The safety protection device for the escalator and the moving walk according to claim 1, wherein the flange plate (21) is connected with a mounting seat, a mounting groove matched with the mounting seat is formed in the movable friction plate (26), the movable friction plate (26) is connected with the mounting seat through a plurality of connecting bolts (27) with nuts (22), and the movable friction plate (26) is connected with the mounting seat in a relatively movable mode.
3. The safety protection device for escalators and moving walkways according to claim 2, characterized in that the side of the mounting seat is provided with at least one slide (24), and the mounting groove on the moving friction disc (26) is provided with a slide groove adapted to the slide (24).
4. A safety arrangement for escalators and moving walkways according to claim 3, characterized in that the connecting bolt is provided with a return spring (23) for pushing the moving friction disc (26) away from the static friction disc (28).
5. The safety arrangement for escalators and moving walkways according to claim 1, characterized in that a mounting sleeve is provided in the housing (211), and that a mounting shaft is provided on the static friction disc (28), which mounting shaft passes through the electromagnet (210) and is mounted in the mounting sleeve.
6. Safety arrangement for escalators and moving walkways according to claim 5, characterized in that at least one flat key (29) is provided on the mounting shaft.
7. The safety device of claim 5, wherein the mounting shaft is a ferromagnetic material.
8. Safety arrangement for escalators and moving walkways according to any of claims 1-7, characterized in that the additional braking device (2) further comprises a protective cover (3) connected to the housing (211) for covering the moving friction disc (26).
9. Safety arrangement for escalators and moving walkways according to any of claims 1-7, characterized in that the electromagnet (210) is connected to a control cabinet of the escalator or moving walkway, which controls the electromagnet (210) to be powered when the control cabinet detects overspeed or reversal of the escalator or moving walkway.
10. Safety arrangement suitable for escalators and moving walkways according to any of claims 1-7, characterized in that the additional braking arrangement (2) further comprises a photoelectric sensor (15), an encoder and a controller, the photoelectric sensor (15) being arranged at the drive chain of the escalator or moving walkway, the encoder being arranged at the main drive wheel (16) of the escalator or moving walkway, the detection data of the photoelectric sensor (15) and the encoder being output to the controller, the electromagnet (210) being controlled by the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321010229.4U CN219823353U (en) | 2023-04-28 | 2023-04-28 | Safety protection device suitable for escalator and moving walk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321010229.4U CN219823353U (en) | 2023-04-28 | 2023-04-28 | Safety protection device suitable for escalator and moving walk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219823353U true CN219823353U (en) | 2023-10-13 |
Family
ID=88280356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321010229.4U Active CN219823353U (en) | 2023-04-28 | 2023-04-28 | Safety protection device suitable for escalator and moving walk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219823353U (en) |
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2023
- 2023-04-28 CN CN202321010229.4U patent/CN219823353U/en active Active
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