Self-checking type elevator speed governor fault alarm device

Abstract

The utility model provides a self-checking type elevator speed governor fault alarm device which comprises cleaning rotary drum sets installed in an elevator speed governor, the cleaning rotary drum sets are arranged at the bottom of the elevator speed governor, the cleaning rotary drum sets are symmetrically arranged, each cleaning rotary drum set comprises a first cleaning rotary drum and a second cleaning rotary drum, and the first cleaning rotary drum and the second cleaning rotary drum are arranged on the bottom of the elevator speed governor. The first cleaning rotary drum and the second cleaning rotary drum are arranged up and down, a turning gear is arranged between the first cleaning rotary drum and the second cleaning rotary drum, and gear ring grooves are formed in the ends, close to each other, of the first cleaning rotary drum and the second cleaning rotary drum respectively. According to the device, the cleaning rotary drum set is arranged to clean a steel rope passing through a speed limiting wheel on an elevator speed limiter and clean greasy dirt, dust and the like on the surface of the steel rope, the turning gear is arranged to change the rotating direction of the two cleaning rotary drums, and the dynamic motor torsion tester is arranged to test the torque of the elevator speed limiter. And driving torsion of the driving motor aiming at the power gear shaft is detected in real time.

Description

Technical Field

[0001] This utility model belongs to the field of elevator speed governor detection, specifically a self-testing elevator speed governor fault alarm device. Background Technology

[0002] The self-testing elevator speed governor is a key component of the elevator safety protection system. When the elevator speed exceeds the rated speed, the speed governor will trigger the safety gear to work, forcing the elevator to stop. As one of the safety structures of the elevator, when the elevator speed reaches a certain speed, the centrifugal mechanism on the speed governor will cause the swing block to overcome the spring force and move outward from the axis under high speed. The swing block will strike the electrical safety switch on the speed governor, and the switch will be activated, the electrical safety circuit will be broken, and the elevator will stop running. However, malfunctions can also occur when the speed governor is in use.

[0003] The surface of the speed governor wheel is wrapped with elevator traction steel rope. During operation, in order to ensure smooth operation of the steel rope, lubricating oil is usually applied to the surface of the steel rope. However, as the elevator runs in the elevator shaft, the surface absorbs dust and other impurities from the elevator shaft, resulting in excessive oil, dust and other impurities on the surface of the steel rope. This causes the speed governor wheel to slip, making it impossible to accurately detect the speed of the elevator and endangering the safe use of the speed governor.

[0004] In summary, this utility model provides a self-testing elevator speed governor fault alarm device to solve the above-mentioned problems. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a self-testing elevator speed governor fault alarm device, which solves the problems in the prior art where the elevator speed cannot be accurately detected, thus jeopardizing the safe use of the speed governor.

[0006] A self-testing elevator speed governor fault alarm device includes a cleaning drum assembly installed inside the elevator speed governor. The cleaning drum assembly is located at the bottom of the elevator speed governor and is symmetrically arranged. Each cleaning drum assembly includes a first cleaning drum and a second cleaning drum, which are arranged vertically. A reversing gear is provided between the first and second cleaning drums. Gear ring grooves are respectively formed at adjacent ends of the first and second cleaning drums, and the reversing gear is disposed within the gear ring grooves. Multiple torque teeth are installed along the annular inner wall of the gear ring groove. The reversing gear meshes with the torque teeth respectively. A power gear shaft is installed on one side of the reversing gear. Rotary drum seats are rotatably connected to the first and second cleaning drums respectively. The rotary drum seats are installed on the inner wall of the elevator speed governor through the mounting plate. The power gear shaft moves through the mounting plate and is fixedly connected to a dynamic motor torque tester. A drive motor is installed inside the elevator speed governor. The output shaft of the drive motor is connected to the dynamic motor torque tester through a coupling.

[0007] Furthermore, steel rope cleaning sleeves are respectively installed at opposite ends of the first and second cleaning drums, and the steel rope cleaning sleeves are respectively set at the openings of the first and second cleaning drums.

[0008] Furthermore, multiple cleaning guide plates are respectively installed on the surface of the steel rope cleaning sleeve. The cleaning guide plates are arranged in a circular array and are inclined towards the center of the steel rope cleaning sleeve.

[0009] Furthermore, the mounting plate is installed on the elevator speed governor, the rotating drum seat is fixedly connected to one side of the mounting plate, and the rotating drum seat is rotatably connected to the first cleaning rotating drum and the second cleaning rotating drum via bearings.

[0010] Furthermore, the torque teeth are mounted on the inner wall of the tooth ring groove and arranged in a ring array along the tooth ring groove.

[0011] Furthermore, the openings of the first cleaning drum and the second cleaning drum are arranged correspondingly to each other, and the axis of the opening is vertically arranged in the vertical direction. A gap is provided between the first cleaning drum and the second cleaning drum.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model uses a cleaning drum assembly to clean the steel cable passing through the speed limit wheel of the elevator speed governor, removing surface oil, dust, and other contaminants. A reversing gear changes the rotation direction of the two cleaning drums. A dynamic motor torque tester monitors the driving torque of the drive motor on the power gear shaft in real time, thus understanding the ease with which the two cleaning drums clean surface oil, preventing excessive oil accumulation on the steel cable surface and affecting the normal function of the speed governor. The dynamic motor torque tester also triggers an alarm in real time when the torque exceeds the set range, prompting maintenance of the elevator speed governor and ensuring the speed limit wheel operates normally, thus guaranteeing the safety of elevator operation.

[0014] 2. By setting two cleaning drums, this utility model can determine the operation of the steel rope on the surface of the speed limiting wheel by testing the torque of the reversing gear on the two cleaning drums. On the other hand, it can change the rotation cleaning direction of the cleaning drums, thereby better cleaning the oil stains on the surface of the steel rope. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the elevator speed limiter of this utility model;

[0016] Figure 2 This is a perspective view of the utility model;

[0017] Figure 3 This is a perspective view of the cleaning drum assembly of this utility model;

[0018] Figure 4 This is a three-dimensional view of the reversing gear of this utility model.

[0019] In the picture:

[0020] 1. Elevator speed limiter; 2. Drive motor; 3. Dynamic motor torque tester; 4. Mounting base plate; 5. Cleaning drum one; 6. Drum seat; 7. Steel rope cleaning sleeve; 8. Torque gear; 9. Reversing gear; 10. Power gear shaft; 11. Cleaning guide plate; 12. Gear ring groove; 13. Cleaning drum two. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figures 1-4As shown, this utility model provides a self-testing elevator speed governor fault alarm device, including a cleaning drum assembly installed inside the elevator speed governor 1. The cleaning drum assembly is located at the bottom of the elevator speed governor 1 and is symmetrically arranged. Each cleaning drum assembly includes a first cleaning drum 5 and a second cleaning drum 13, which are arranged vertically. A reversing gear 9 is provided between the first cleaning drum 5 and the second cleaning drum 13. A gear ring groove 12 is opened at one end of the first cleaning drum 5 and the second cleaning drum 13 that are close to each other. The reversing gear 9 is located in the gear ring groove 12. Inside the gear ring groove 12, multiple torque teeth 8 are installed along its annular inner wall. The reversing gear 9 meshes with the torque teeth 8 respectively. A power gear shaft 10 is installed on one side of the reversing gear 9. A rotating drum seat 6 is rotatably connected to the first cleaning drum 5 and the second cleaning drum 13 respectively. The rotating drum seat 6 is installed on the inner wall of the elevator speed limiter 1 through the mounting plate 4. The power gear shaft 10 moves through the mounting plate 4 and is fixedly connected to the dynamic motor torque tester 3. A drive motor 2 is installed inside the elevator speed limiter 1. The output shaft of the drive motor 2 is connected to the dynamic motor torque tester 3 through a coupling.

[0023] As one embodiment of this utility model, steel rope cleaning sleeves 7 are respectively installed on the ends of the cleaning drum 1 5 and the cleaning drum 2 13 that are far apart from each other. The steel rope cleaning sleeves 7 are respectively set at the opening of the cleaning drum 1 5 and the cleaning drum 2 13.

[0024] As one embodiment of this utility model, a plurality of cleaning guide plates 11 are respectively installed on the surface of the steel rope cleaning sleeve 7. The cleaning guide plates 11 are arranged in a ring array and are inclined toward the center of the steel rope cleaning sleeve 7.

[0025] In one embodiment of this utility model, the mounting plate 4 is installed on the elevator speed limiter 1, the rotating drum seat 6 is fixedly connected to one side of the mounting plate 4, and the rotating drum seat 6 is rotatably connected to the first cleaning rotating drum 5 and the second cleaning rotating drum 13 through bearings.

[0026] In one embodiment of this utility model, the torsion teeth 8 are installed on the inner wall of the tooth ring groove 12 and arranged in a ring array along the tooth ring groove 12.

[0027] In one embodiment of this utility model, the openings of the first cleaning drum 5 and the second cleaning drum 13 are arranged correspondingly to each other, and the axis of the opening is vertically arranged in the vertical direction. A gap is provided between the first cleaning drum 5 and the second cleaning drum 13.

[0028] Specific working principle:

[0029] Start drive motor 2, drive motor 2 drives power gear shaft 10 to rotate through dynamic motor torque tester 3, thereby driving change gear 9;

[0030] When the reversing gear 9 is driven, it meshes with the torque gear 8, and the first cleaning drum 5 and the second cleaning drum 13 rotate in different directions.

[0031] The elevator's traction steel rope passes through the middle of the two cleaning drum groups respectively, and the steel rope cleaning sleeve 7 contacts the surface of the steel rope to scrape off the oil stains on the surface.

[0032] When the dynamic motor torque tester detects an increase in torque exceeding the specified range, an alarm can be triggered to stop the elevator operation, check the speed governor, and perform real-time alarms to ensure the speed governor wheel can operate normally and guarantee the safety of elevator operation.

[0033] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A self-testing elevator speed governor fault alarm device, comprising a cleaning drum assembly installed inside the elevator speed governor (1), the cleaning drum assembly being disposed at the bottom of the elevator speed governor (1), the cleaning drum assemblies being symmetrically arranged, each cleaning drum assembly comprising a first cleaning drum (5) and a second cleaning drum (13), characterized in that: The first cleaning drum (5) and the second cleaning drum (13) are arranged vertically. A reversing gear (9) is provided between the first cleaning drum (5) and the second cleaning drum (13). A gear ring groove (12) is opened at one end of the first cleaning drum (5) and the second cleaning drum (13) respectively. The reversing gear (9) is set in the gear ring groove (12). Multiple torque teeth (8) are installed along the annular inner wall of the gear ring groove (12). The reversing gear (9) meshes with the torque teeth (8) respectively. A power gear shaft (10) is installed on the side. A rotating drum seat (6) is rotatably connected to the first cleaning drum (5) and the second cleaning drum (13). The rotating drum seat (6) is installed on the inner wall of the elevator speed limiter (1) through the mounting plate (4). The power gear shaft (10) moves through the mounting plate (4) and is fixedly connected to a dynamic motor torque tester (3). A drive motor (2) is installed inside the elevator speed limiter (1). The output shaft of the drive motor (2) is connected to the dynamic motor torque tester (3) through a coupling.

2. The self-testing elevator speed governor fault alarm device as described in claim 1, characterized in that: Steel rope cleaning sleeves (7) are respectively installed at opposite ends of the first cleaning drum (5) and the second cleaning drum (13), and the steel rope cleaning sleeves (7) are respectively set at the opening of the first cleaning drum (5) and the second cleaning drum (13).

3. The self-testing elevator speed governor fault alarm device as described in claim 2, characterized in that: The surface of the steel rope cleaning sleeve (7) is equipped with a plurality of cleaning guide plates (11), which are arranged in a ring array and are inclined toward the center of the steel rope cleaning sleeve (7).

4. The self-testing elevator speed governor fault alarm device as described in claim 1, characterized in that: The mounting plate (4) is installed on the elevator speed limiter (1), and the rotating drum seat (6) is fixedly connected to one side of the mounting plate (4). The rotating drum seat (6) is rotatably connected to the first cleaning drum (5) and the second cleaning drum (13) through bearings.

5. The self-testing elevator speed governor fault alarm device as described in claim 1, characterized in that: The torsion teeth (8) are installed on the inner wall of the tooth ring groove (12) and arranged in a ring array along the tooth ring groove (12).

6. The self-testing elevator speed governor fault alarm device as described in claim 1, characterized in that: The openings of the first cleaning drum (5) and the second cleaning drum (13) are arranged corresponding to each other, and the axis of the opening is set vertically in the vertical direction. A gap is provided between the first cleaning drum (5) and the second cleaning drum (13).

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