Elevator traction sheave offset wear detection device

Abstract

The utility model relates to the technical field of elevators, and provides an elevator traction sheave offset wear detection device which comprises a traction sheave and a steel guide rail, the steel guide rail is installed from the bottom to the top in an elevator hoistway in a full length mode, and the traction sheave is installed in the hoistway top area of the steel guide rail. The device further comprises a supporting plate, a controller, an offset sensing assembly, a driving part, a telescopic assembly and a displacement sensor. The supporting plate is fixedly connected with the steel guide rail, the deviation sensing assembly enables collected electric signals to be electrically connected with the controller, a plurality of driving parts are installed on the supporting plate, a driving shaft of each driving part is connected with one telescopic assembly, the telescopic assemblies can elastically stretch into a wheel groove of the traction wheel when the driving parts are started, and the displacement sensors are connected with the telescopic assemblies. By means of the technical scheme, the problem that in the prior art, a driven shaft is driven to rotate through a traction wheel groove, abrasion of the wheel groove is detected, but the service life of a traction wheel is easily affected is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of elevator technology, and more specifically, to an elevator traction sheave offset and wear detection device. Background Technology

[0002] Elevator traction sheaves, also known as traction rope sheaves or drive rope sheaves, are typically installed at the top of the elevator shaft. They are the devices that transmit traction power in the elevator. The traction machine on the steel guide rails drives the traction sheave. The traction sheave has multiple grooves, and power is transmitted through the friction between the traction steel wire rope and the grooves on the rim of the sheave. However, the grooves of the traction sheave and the steel wire rope will experience varying degrees of wear due to prolonged contact and rotation. When the depth difference between the grooves exceeds the specified limit, or when slippage occurs between the steel wire rope and the grooves, the normal operation of the elevator will be affected, thus requiring replacement of the traction sheave.

[0003] In a similar technology, Chinese Patent Publication No. CN222138423U discloses an elevator traction sheave offset wear detection device. This device installs a driven wheel below the traction sheave that matches the wheel groove of the traction sheave. When the traction sheave rotates, it drives the driven wheel to rotate together through the wheel groove. It also measures in real time whether there is a speed difference between the rotation of the traction sheave and the driven wheel, and determines the degree of wear of the wheel groove by the speed difference.

[0004] However, during operation, the driven wheel needs to be rotated through the groove of the traction sheave, which inadvertently increases the wear of the groove and can easily affect the service life of the traction sheave. Utility Model Content

[0005] This invention proposes an elevator traction sheave offset and wear detection device to solve the problem in the prior art that the wear of the traction sheave groove is detected by driving the driven shaft to rotate, but this can easily affect the service life of the traction sheave.

[0006] The technical solution of this utility model is as follows: An elevator traction sheave offset and wear detection device includes a traction sheave, a steel guide rail, a support plate, a controller, an offset sensing component, a drive component, a telescopic component, and a displacement sensor. The steel guide rail is installed from the bottom to the top of the elevator shaft, and the traction sheave is installed on the steel guide rail in the top area of ​​the shaft.

[0007] A support plate is fixedly connected to the steel guide rail. A controller is fixedly mounted on the support plate. An offset sensing component is mounted on the support plate and electrically connected to the controller. The offset sensing component is used to sense the offset electrical signal on the side of the traction sheave and transmit the collected electrical signal to the controller. Several driving components are mounted on the support plate. The drive shafts of the driving components correspond one-to-one with several wheel groove positions of the traction sheave. Each drive shaft of the driving component is connected to a telescopic component. The telescopic component can elastically extend into the wheel groove of the traction sheave when the driving component is activated. A displacement sensor is mounted on the support plate and connected to the telescopic component. The displacement sensor is electrically connected to the controller. The displacement sensor is used to sense the displacement of the telescopic component and transmit the collected displacement signal to the controller.

[0008] Preferably, the offset sensing component includes a base and a button, the base being mounted on the support plate and the button being mounted on the base and close to the side where the traction sheave is mounted.

[0009] To ensure that the displacement sensor can accurately measure the wheel groove depth, preferably, the telescopic assembly includes: a telescopic rod, limiting posts, limiting plates, and limiting through grooves. The telescopic rod is elastically connected to the drive shaft. The telescopic rod and the drive shaft are provided with a plurality of limiting posts. The limiting plates are installed between the telescopic rod and the drive shaft. The limiting plates have two circular through holes, both of which are adapted to the limiting posts. The two circular through holes are connected to form the limiting through grooves, allowing the telescopic rod and the drive shaft to slide within the range of the limiting through grooves.

[0010] To ensure that the displacement distance measured by the displacement sensor is the same as the displacement distance of the telescopic assembly, a brush connector is also included. One end of the brush connector is fixedly installed on the telescopic rod, and the other end of the brush connector can slide on the coil of the displacement sensor.

[0011] To facilitate fault identification, a fault light is also included, which is electrically connected to the controller.

[0012] To provide timely alerts in case of problems, a buzzer is also included, which is electrically connected to the controller.

[0013] The working principle and beneficial effects of this utility model are as follows:

[0014] 1. When the traction sheave deviates, the traction sheave contacts the deviance sensing component on the side of the traction sheave, triggering the sensing and causing the buzzer to sound an alarm;

[0015] 2. When the traction sheave stops rotating, the displacement sensor compares the displacement of the sheave grooves with the depth difference of each groove through the telescopic component. When the depth difference of each groove is greater than the specified value, the sensor is triggered, and the buzzer alarm is activated.

[0016] Compared to existing technologies that measure the speed difference by rotating the driven wheel through the groove of the traction sheave and detect the wear of the groove, this invention uses a displacement sensor and a telescopic component to sense the wear of the groove by contacting it. This method can detect the groove depth without wearing the groove itself. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of the present invention;

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is a schematic diagram of the structure of the telescopic component and the displacement sensor of this utility model.

[0022] In the picture:

[0023] 1. Traction sheave; 2. Steel guide rail; 3. Support plate; 4. Controller; 5. Drive unit; 7. Displacement sensor; 8. Traction machine; 9. Wall; 101. Base; 102. Button; 201. Telescopic rod; 202. Limiting post; 203. Limiting plate; 204. Limiting through slot; 301. Brush connector; 401. Fault light; 501. Buzzer. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0025] like Figures 1 to 4As shown in this embodiment, an elevator traction sheave 1 offset wear detection device includes a traction sheave 1 and a steel guide rail 2. The steel guide rail 2 is installed from the bottom to the top in the elevator shaft. The traction sheave 1 is installed in the top area of ​​the shaft of the steel guide rail 2. It also includes a support plate 3, a controller 4, an offset sensing component, a drive component 5, a telescopic component, a displacement sensor 7, a fault light 401, and a buzzer 501.

[0026] The support plate 3 is fixedly connected to the steel guide rail 2. To ensure the stability of the support plate 3, the other end can be fixed to the wall 9. The controller 4 is fixedly installed on the support plate 3. The offset sensing component is installed on the support plate 3. The offset sensing component is used to sense the offset electrical signal on the side of the traction wheel 1 and to electrically connect the collected electrical signal to the controller 4. Several driving components 5 are installed on the support plate 3. The drive shafts of the several driving components 5 correspond one-to-one with the wheel groove position of the traction wheel 1. The drive shaft of each driving component 5 is connected to a telescopic component. When the driving component 5 is started, the telescopic component can elastically extend into the wheel groove of the traction wheel 1. The displacement sensor 7 is installed on the support plate 3 and connected to the telescopic component. The displacement sensor 7 is used to sense the displacement of the telescopic component and to electrically connect the collected displacement signal to the controller 4.

[0027] like Figure 1 As shown, the offset sensing component includes a base 101 and a button 102. The base 101 is mounted on the support plate 3, and the button 102 is mounted on the base 101 and close to the side where the traction wheel 1 is mounted. The maximum offset distance of the traction wheel 1 can be set, and the distance to the traction wheel 1 is set according to the maximum offset distance. When the traction wheel 1 reaches the maximum offset distance, it contacts the button 102 to trigger the sensing. Multiple offset sensing components can also be set and placed in multiple positions on the side of the traction wheel 1. The base 101 can also be set as a snap-on type, which can be easily snapped onto the support plate 3 for easy installation and disassembly.

[0028] To ensure that the displacement sensor 7 can accurately measure the wheel groove depth, the telescopic assembly includes: a telescopic rod 201, a limiting post 202, a limiting plate 203, and a limiting through groove 204. The telescopic rod 201 is elastically connected to the drive shaft. Several limiting posts 202 are provided between the telescopic rod 201 and the drive shaft. The limiting plate 203 is installed between the telescopic rod 201 and the drive shaft. Two circular through holes are provided on the limiting plate 203, and both circular through holes are adapted to the limiting posts 202. The two circular through holes are connected to form the limiting through groove 204, which allows the telescopic rod 201 and the drive shaft to... The moving shaft slides within the limiting groove 204. The telescopic component is mainly designed to push the telescopic component deeper into the wheel groove when the drive component 5 is activated. However, the drive component 5 can only push a set distance and does not have a stop function when encountering obstacles. Therefore, when the telescopic rod 201 of the telescopic component reaches the bottom of the wheel groove, the drive shaft of the drive component 5 will continue to move upward. The elastic components of the telescopic rod 201 and the drive shaft, as well as the limiting piece 203, allow the drive shaft to continue moving upward a certain distance to protect the drive component 5 from damage, while the displacement of the telescopic rod 201 remains unchanged. The drive component can be a push rod motor or a cylinder. In this embodiment, a push rod motor is preferred because it can be easily pushed or retracted.

[0029] To ensure that the displacement distance measured by the displacement sensor 7 is the same as the displacement distance of the telescopic assembly, a brush connector 301 is also included. One end of the brush connector 301 is fixedly installed on the telescopic rod 201, and the other end of the brush connector 301 slides on the coil of the displacement sensor 7.

[0030] The displacement sensor 7 can be of many types. In this embodiment, a linear potentiometer-type displacement sensor 7 is preferred. The working principle of this displacement sensor 7 is the same as that of a sliding rheostat. It mainly changes the voltage by having a brush slide on the coil of the displacement sensor 7. The voltage has a linear relationship with the displacement of the brush, from which the magnitude of the displacement can be obtained.

[0031] The brush connector 301 is fixedly connected to the telescopic rod 201 and slides with the coil, so the moving distance of the telescopic rod 201 can be measured by the displacement sensor 7.

[0032] The fault light 401 is electrically connected to the controller 4. The fault light 401 can be set to two colors to distinguish whether the problem is wear of the wheel groove or misalignment of the traction wheel 1. The buzzer 501 is also electrically connected to the controller 4. The buzzer 501 is activated when the wheel groove is worn or the traction wheel 1 is misaligned.

[0033] Working principle: During elevator operation, the traction sheave 1 rotates at the top of the elevator shaft. After a long period of rotation with the wire rope, the traction sheave 1 may experience varying degrees of wear in the wheel groove and deviation. The support plate 3 below the traction sheave 1 is equipped with components such as the deviation sensing component and the displacement sensor 7. The deviation sensing component is installed on the side of the traction sheave 1. When the traction sheave 1 deviates by a set distance, it triggers the button 102. The button 102 activates the buzzer 501 and the fault light 401 through the controller 4, issuing an alarm.

[0034] Regarding wheel groove wear, first ensure that the drive component 5, telescopic assembly, displacement sensor 7, and brush connector 301 are all of the same model and in their initial positions. When the elevator travels to a designated floor, the elevator brake will lock the traction machine 8 to stop, thereby stopping the rotation of the traction sheave 1. At this time, immediately activate the drive component 5 corresponding to each wheel groove. The drive component 5 pushes its respective telescopic assembly deep into the bottom of the wheel groove. When the elevator starts again, the brake unlocks the traction machine 8, and at the same time, the traction machine 8 starts and the drive component 5 retracts, thereby starting the traction sheave 1. The telescopic assembly transmits the displacement information to the controller 4 through the displacement sensor 7. The controller 4 compares the displacement information of each wheel groove to determine the depth difference of the wheel groove. If the depth difference exceeds the set height (e.g., 1.5mm), the buzzer 501 and fault light 401 are activated to issue an alarm, waiting for relevant personnel to perform maintenance.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An elevator traction sheave offset and wear detection device, comprising a traction sheave (1) and a steel guide rail (2), wherein the steel guide rail (2) is installed from bottom to top within an elevator shaft, and the traction sheave (1) is installed on the steel guide rail (2) in the top region of the shaft, characterized in that, Also includes: The support plate (3) is fixedly connected to the steel guide rail (2); The controller (4) is fixedly installed on the support plate (3); An offset sensing component is mounted on the support plate (3) and electrically connected to the controller (4). The offset sensing component is used to sense the offset electrical signal on the side of the traction wheel (1) and transmit the collected electrical signal to the controller (4). A number of drive components (5) are installed on the support plate (3), and the drive shafts of the number of drive components (5) correspond one-to-one with the positions of the wheel grooves of the traction wheel (1). Telescopic assembly, each of the drive shafts of the drive member (5) is connected to a telescopic assembly, the telescopic assembly being able to elastically extend into the groove of the traction wheel (1) when the drive member (5) is started; A displacement sensor (7) is mounted on the support plate (3) and connected to the telescopic assembly. The displacement sensor (7) is electrically connected to the controller (4). The displacement sensor (7) is used to sense the displacement of the telescopic assembly and transmit the collected displacement signal to the controller (4).

2. The elevator traction sheave offset and wear detection device according to claim 1, characterized in that, The offset sensing component includes: The base (101) is mounted on the support plate (3); A button (102) is mounted on the base (101) and close to the side where the traction sheave (1) is mounted.

3. The elevator traction sheave offset and wear detection device according to claim 1, characterized in that, The telescopic component includes: The telescopic rod (201) is elastically connected to the drive shaft; Limiting posts (202), the telescopic rod (201) and the drive shaft are provided with a plurality of limiting posts (202); A limiting piece (203) is installed between the telescopic rod (201) and the drive shaft; The limiting groove (204) has two circular through holes on the limiting piece (203), both of which are adapted to the limiting post (202). The two circular through holes are connected to form the limiting groove (204), which allows the telescopic rod (201) and the drive shaft to slide within the range of the limiting groove (204).

4. The elevator traction sheave offset and wear detection device according to claim 3, characterized in that, It also includes a brush connector (301), one end of which is fixedly mounted on the telescopic rod (201), and the other end of which can slide on the coil of the displacement sensor (7).

5. The elevator traction sheave offset and wear detection device according to claim 1, characterized in that, It also includes a fault light (401), which is electrically connected to the controller (4).

6. The elevator traction sheave offset and wear detection device according to claim 1, characterized in that, It also includes a buzzer (501) which is electrically connected to the controller (4).

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