Elevator speed limiting safety device

Abstract

The utility model discloses an elevator speed limiting safety device which comprises a speed limiter body and a binding assembly, an installation shell and a flywheel disc are arranged on the speed limiter body, the flywheel disc is rotationally installed on the installation shell and used for being connected with a steel wire rope, the binding assembly is arranged on the installation shell, and an installation plate is fixedly installed on the side of the interior of the installation shell. The first guide roller and the second guide roller are symmetrically and rotationally arranged on one side of the mounting plate, the axis of the first guide roller and the axis of the second guide roller and the axis of the flywheel disc are in a vertical staggered state in a downward view, and the mounting shaft is rotationally connected with the first guide roller and the second guide roller in a sleeving mode. According to the utility model, the first guide roller and the second guide roller can guide and limit a steel wire rope connected with the flywheel panel by utilizing a matched use mode of the mounting shell, the flywheel panel and the binding component, so that the steel wire rope is prevented from being separated from the flywheel panel, and the running stability of the flywheel panel and the steel wire rope is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of elevators, and in particular to an elevator speed limiting safety device. Background Technology

[0002] The elevator speed governor is a key component of the elevator safety system. It is mainly used to monitor the elevator's operating speed and ensure that safety measures are taken in time in case of overspeed or abnormal conditions. The main function of the speed governor is to prevent accidents caused by excessive speed during elevator operation, thereby ensuring the safety of passengers.

[0003] There are three types of elevator speed governors: mechanical speed governors, electronic speed governors, and composite speed governors. All three types of speed governors use ropes to drive a flywheel to rotate and detect the speed by detecting the rotation speed of the flywheel. When the elevator speed exceeds the limit, the speed governor will control the safety brake on the elevator car to brake it.

[0004] However, when the steel cable connecting the elevator car safety brake and the flywheel becomes slack or the movement exceeds the speed limit, the steel cable may shake, causing it to detach from the flywheel on the speed governor. This can lead to the speed governor being unable to detect the elevator car speed or mistakenly triggering the safety brake, thus presenting a certain defect. Utility Model Content

[0005] The purpose of this invention is to provide an elevator speed limiting safety device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an elevator speed limiting safety device, comprising:

[0007] The speed limiter body has a mounting housing and a flywheel disk on it. The flywheel disk is rotatably mounted on the mounting housing and is used to connect the wire rope.

[0008] The restraint assembly, disposed on the mounting housing, includes:

[0009] Mounting plate, which is fixedly installed on the side inside the mounting housing;

[0010] The first guide roller and the second guide roller are symmetrically rotated and disposed on one side of the mounting plate. The axis lines of the first guide roller and the second guide roller are perpendicularly intersecting the axis line of the flywheel in the top view.

[0011] Preferably, the restraint assembly further includes:

[0012] The mounting shaft has its outer wall rotatably sleeved with the first guide roller and the second guide roller, respectively.

[0013] A locking component is disposed on the other side of the mounting plate, and the locking component is used to lock the mounting shaft in a snap-fit ​​manner.

[0014] Preferably, the restraint assembly further includes:

[0015] Connecting rails are symmetrically and fixedly connected to one side of the mounting plate;

[0016] The guide plate has its outer wall slidably engaged with the connecting rail, one end of the mounting shaft is fixedly connected to the guide plate, and one side of the guide plate is connected to the locking assembly.

[0017] Preferably, the locking component includes:

[0018] A fixed shaft, one end of which is fixedly connected to a guide plate;

[0019] A sliding hole is formed on one side of the mounting plate, and the outer wall of the fixed shaft is slidably sleeved with the inner cavity of the sliding hole.

[0020] Preferably, the locking component further includes:

[0021] A connecting plate, wherein one side of the connecting plate is symmetrically provided with through holes that match the fixed shaft;

[0022] A locking rod, one end of which is fixedly connected to a connecting plate, and a locking groove is provided on the other side of the mounting plate. The outer wall of the locking rod is slidably engaged with the inner cavity of the locking groove.

[0023] Preferably, the locking component further includes:

[0024] A fixed sleeve, one end of which is fixedly connected to a connecting plate;

[0025] A limiting block is fixedly connected to the end of a fixed shaft and slidably sleeved inside a fixed sleeve.

[0026] A limiting spring is slidably sleeved on the outside of the fixed shaft, and the limiting spring is located between the limiting block and the connecting plate.

[0027] The technical effects and advantages of this utility model are as follows:

[0028] This utility model utilizes the combined use of a mounting housing, a flywheel, and a restraint assembly. The restraint assembly includes a mounting plate, a first guide roller, a second guide roller, a mounting shaft, and a locking assembly. The first and second guide rollers can guide and limit the steel wire rope connected to the flywheel, thereby preventing the steel wire rope from detaching from the flywheel and ensuring the stability of the flywheel and steel wire rope during operation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of part of this utility model;

[0030] Figure 2 This is a schematic diagram of the overall structure of the mounting plate of this utility model;

[0031] Figure 3 This is a schematic diagram of the internal structure of the mounting plate of this utility model.

[0032] In the diagram: 1. Speed ​​limiter body; 11. Mounting housing; 12. Flywheel disc; 2. Restraint assembly; 21. Mounting plate; 22. First guide roller; 23. Second guide roller; 24. Mounting shaft; 25. Locking assembly; 251. Fixed shaft; 252. Connecting plate; 253. Locking rod; 254. Fixed sleeve; 255. Limiting block; 256. Limiting spring; 26. Connecting rail; 27. Guide plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] This utility model provides, for example Figure 1-3The elevator speed limiting safety device shown includes a speed governor body 1 and a restraint assembly 2. The speed governor body 1 is equipped with a mounting housing 11 and a flywheel 12. The flywheel 12 is rotatably mounted on the mounting housing 11 and is used to connect a steel wire rope. The steel wire rope is connected to the safety gear of the elevator car. Therefore, when the elevator exceeds its speed limit, the steel wire rope drives the flywheel 12 to rotate, causing the speed governor body 1 to brake the flywheel 12 and the steel wire rope. The steel wire rope then drives the safety gear to brake the elevator car. This is prior art and will not be described in detail here. The restraint assembly 2 is mounted on the mounting housing 11 and includes a mounting plate 21 and a first guide roller 2. 2. The first guide roller 22 and the second guide roller 23 are fixedly installed on the side inside the mounting housing 11. The first guide roller 22 and the second guide roller 23 are symmetrically rotated on one side of the mounting plate 21. The axis of the first guide roller 22 and the second guide roller 23 is perpendicular to the axis of the flywheel 12 in the top view. The center point between the first guide roller 22 and the second guide roller 23 is located on the vertical section perpendicular to the axis of the flywheel 12. Thus, the first guide roller 22 and the second guide roller 23 can guide and limit the steel wire rope on the flywheel 12, ensuring the stability of the connection between the steel wire rope and the flywheel 12.

[0035] Furthermore, the restraint assembly 2 also includes a mounting shaft 24 and a locking assembly 25. The outer wall of the mounting shaft 24 is rotatably sleeved with the first guide roller 22 and the second guide roller 23 respectively. The locking assembly 25 is disposed on the other side of the mounting plate 21 and is used to lock the mounting shaft 24. The restraint assembly 2 also includes a connecting rail 26 and a guide plate 27. The connecting rail 26 is symmetrically fixedly connected to one side of the mounting plate 21. The outer wall of the guide plate 27 is slidably engaged with the connecting rail 26. One end of the mounting shaft 24 is fixedly connected to the guide plate 27. One side of the guide plate 27 is connected to the locking assembly 25, that is, the locking assembly 25 is released from the restriction of the guide plate 27, so that the guide plate 27 can slide between the two connecting rails 26, increasing the distance between the first guide roller 22 and the second guide roller 23, which can facilitate the installation or disassembly of the wire rope on the flywheel 12.

[0036] In particular, the locking assembly 25 includes a fixed shaft 251, a sliding hole, a connecting plate 252, and a locking rod 253. One end of the fixed shaft 251 is fixedly connected to the guide plate 27. The sliding hole is opened on one side of the mounting plate 21 and has a certain length. The outer wall of the fixed shaft 251 is slidably sleeved with the inner cavity of the sliding hole. One side of the connecting plate 252 is symmetrically provided with through holes that match the fixed shaft 251. One end of the locking rod 253 is fixedly connected to the connecting plate 252. The other side of the mounting plate 21 is provided with a locking groove. The outer wall of the locking rod 253 is slidably engaged with the inner cavity of the locking groove. The locking rod 253 engages with the locking grooves at different positions on the mounting plate 21, so that the connecting plate 252 can be engaged at different positions on the mounting plate 21. In turn, the connecting plate 252, through the fixed shaft 251, engages the guide plate 27 at different positions on one side of the mounting plate 21.

[0037] Specifically, the locking assembly 25 also includes a fixed sleeve 254, a limiting block 255, and a limiting spring 256. One end of the fixed sleeve 254 is fixedly connected to the connecting plate 252. The limiting block 255 is fixedly connected to the end of the fixed shaft 251. The limiting block 255 is slidably sleeved inside the fixed sleeve 254. The limiting spring 256 is slidably sleeved outside the fixed shaft 251. The limiting spring 256 is located between the limiting block 255 and the connecting plate 252. The fixed sleeve 254 can shield and protect the limiting spring 256. Pulling the fixed sleeve 254 can move the connecting plate 252 away from the mounting plate 21. The limiting spring 256 can give the connecting plate 252 an elastic compressive force, thereby ensuring the stability of the connection between the connecting plate 252 and the locking rod 253 and the mounting plate 21.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An elevator speed limiting safety device, characterized in that, include: Speed ​​limiter body (1), the speed limiter body (1) is provided with mounting housing (11) and flywheel disc (12), the flywheel disc (12) is rotatably mounted on mounting housing (11), the flywheel disc (12) is used to connect steel wire rope; A restraint assembly (2), which is disposed on the mounting housing (11), includes: Mounting plate (21), which is fixedly installed on the side inside the mounting housing (11); The first guide roller (22) and the second guide roller (23) are symmetrically rotated and disposed on one side of the mounting plate (21). The axis of the first guide roller (22) and the axis of the second guide roller (23) are perpendicularly intersecting with the axis of the flywheel (12) in the top view.

2. An elevator overspeed safety device according to claim 1, wherein The restraint component (2) also includes: Mounting shaft (24), the outer wall of which is rotatably sleeved with the first guide roller (22) and the second guide roller (23); A locking component (25) is disposed on the other side of the mounting plate (21) and is used to lock the mounting shaft (24) in a snap-fit ​​manner.

3. An elevator overspeed safety device according to claim 2, wherein The restraint component (2) also includes: Connecting rails (26) are symmetrically fixed to one side of the mounting plate (21); The guide plate (27) has its outer wall slidably engaged with the connecting rail (26), one end of the mounting shaft (24) is fixedly connected to the guide plate (27), and one side of the guide plate (27) is connected to the locking assembly (25).

4. An elevator overspeed safety device according to claim 3, wherein The locking component (25) includes: A fixed shaft (251) is fixedly connected at one end to a guide plate (27); A sliding hole is provided on one side of the mounting plate (21), and the outer wall of the fixed shaft (251) is slidably sleeved with the inner cavity of the sliding hole.

5. An elevator overspeed safety device according to claim 4, wherein The locking component (25) also includes: A connecting plate (252) has through holes symmetrically opened on one side that match the fixed shaft (251); A locking rod (253) is fixedly connected at one end to a connecting plate (252), and a locking groove is provided on the other side of the mounting plate (21). The outer wall of the locking rod (253) is slidably engaged with the inner cavity of the locking groove.

6. The elevator speed limiting safety device according to claim 5, characterized in that, The locking component (25) also includes: A fixed sleeve (254) is fixedly connected at one end to a connecting plate (252); A limiting block (255) is fixedly connected to the end of a fixed shaft (251) and the limiting block (255) is slidably sleeved inside a fixed sleeve (254). A limiting spring (256) is slidably sleeved on the outside of the fixed shaft (251) and the limiting spring (256) is located between the limiting block (255) and the connecting plate (252).

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