Auxiliary detection device for action speed of speed limiter
Through the speed limiter action speed assist detection device, the paddle contacts the speed limiter wheel, which solves the complex and time-consuming problem of speed limiter verification, and realizes fast and simple speed limiter detection to prevent safety hazards.
Patent Information
- Application Number
- CN202422659219.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The calibration of existing speed limiters requires professional instruments, which are complex and time-consuming, which may lead to failure of the speed limiters during the calibration period and create safety hazards.
A speed limiter action speed assist detection device is designed. By contacting the speed limiter wheel with the speed limiter wheel, observing the position of the paddle determines whether the speed limiter action deviates, and combining with ordinary tools to achieve rapid detection.
Ordinary maintenance personnel can operate easily, quickly detect the speed of the speed limiter, promptly detect potential problems, prevent safety hazards, and simplify the inspection process.
Smart Images
Figure CN223213584U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of speed governor calibration, in particular to an auxiliary detection device for the action speed of a speed governor. Background Art
[0002] The speed governor is an important safety protection component to prevent the elevator from overspeeding and falling. According to the working principle, there are mainly centrifugal and throwing block types. Their working principles are basically the same. Taking the centrifugal speed governor as an example, the faster the speed governor rotates, the greater the swing amplitude of the pendulum on the centrifugal assembly. When the speed of the speed governor exceeds a certain range of the rated speed of the elevator, the trigger rod on the pendulum activates the electrical safety switch, cutting off the elevator safety circuit and braking the elevator. If the overspeed increases further, the pawl trigger device on the speed governor centrifugal assembly triggers the pawl to stop the speed governor wheel from rotating. The safety clamp is pulled by the speed governor wire rope to stop the car on the guide rail.
[0003] Currently, relevant standards stipulate the verification cycle for speed governors: For speed governors with a service life of no more than 15 years, the speed governor's operating speed should be verified every two years; for speed governors with a service life of more than 15 years, the speed governor's operating speed should be verified annually. Due to the long verification cycle, the speed governor wire rope must be detached from the speed governor pulley during verification and a dedicated speed governor calibrator must be used. This instrument is not only complex and time-consuming to operate, but also requires highly specialized personnel to complete. During the verification cycle, wear and rust on the speed governor's rotating parts, poor lubrication, and changes in the performance of elastic parts may cause the centrifugal assembly to become stuck, resulting in the speed governor not being able to operate reliably or even not operating at all when the elevator exceeds the speed limit, creating serious safety hazards and even safety accidents. Utility Model Content
[0004] The utility model aims to provide a speed governor action speed auxiliary detection device to solve the problems that the existing speed governor calibration requires professional instruments, the operation process is complicated and time-consuming.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a speed limiter action speed auxiliary detection device, including a speed limiter, a speed limiter base and an original speed limiter switch, the speed limiter includes a speed limiter pulley, a speed limiter pawl triggering push rod, a speed limiter ratchet, a first centrifugal hammer assembly and a second centrifugal hammer assembly, the speed limiter is externally connected to a detection device, the detection device includes a box body and a paddle, the paddle is connected to the box body and can be rotated outward, and the paddle contacts the speed limiter pulley when it is rotated out of the detection device.
[0006] The working principle of the utility model is as follows: when it is necessary to calibrate the speed of the speed governor, the paddle is rotated out of the box, and one end of the paddle is in contact with the speed governor sheave. At this time, the detection device is in the detection state. After starting the elevator and running at the rated speed once, the position of the paddle of the detection device is observed. If the paddle remains in contact with the speed governor sheave, it is in the test position, and it is judged that the speed governor action speed has seriously deviated, and a special calibrator is needed for further calibration and confirmation. If the paddle is triggered by the speed governor pawl to push out the push rod due to the normal rotation speed of the centrifugal hammer assembly, the paddle is away from the speed governor sheave and is in the non-test position. At this time, it is judged that the speed governor action speed has not deviated.
[0007] The beneficial effects of the utility model are as follows: 1. The purpose of detecting the operating speed of the speed limiter is achieved through a simple design, so that ordinary maintenance personnel can easily operate it without the need for complicated calibration tools; 2. The detection device has a simple structure, a quick and convenient installation process, and is easy to deploy on site; 3. Regular use of the device can promptly detect potential problems with the speed limiter, effectively preventing safety hazards and accidents caused by speed limiter failure.
[0008] Furthermore, one end of the box body is connected to a spring, the spring is connected to a guide block, and the guide block is connected to the paddle.
[0009] Furthermore, the paddle is in a teardrop shape, so that the paddle can better contact the speed governor rope wheel.
[0010] Furthermore, the rotating surface of the paddle and the rotating surface of the first centrifugal hammer assembly are located at the same horizontal plane. By arranging the paddle and the first centrifugal hammer assembly at the same horizontal plane, the paddle is prevented from affecting the operation of the speed governor after being deviated.
[0011] Furthermore, when the paddle is in the rotated-out state, the speed limiter action speed deviates seriously, and when the paddle is in the box, the speed limiter action speed does not deviate. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the structure of a speed limiter action speed auxiliary detection device in working state according to the utility model;
[0013] Figure 2 This is a structural diagram of a speed limiter action speed auxiliary detection device in a non-working state according to the utility model;
[0014] Figure 3 for Figure 1 sectional view of
[0015] Figure 4 for Figure 2 sectional view of
[0016] Figure 5 This is a schematic diagram of the structure of the detection device in working state;
[0017] Figure 6 A schematic diagram of the structure of the detection device in a non-working state;
[0018] Figure 7 for Figure 1 Schematic diagram of the structure of the detection device. DETAILED DESCRIPTION
[0019] The following is further described in detail through specific implementation methods:
[0020] The reference numerals in the drawings of the specification include: original speed limiter switch 1, detection device 2, box body 201, spring 202, guide block 203, paddle 204, speed limiter rope pulley 3, speed limiter pawl triggering push rod 4, speed limiter ratchet 5, speed limiter base 6, trigger rod 7, second centrifugal hammer assembly 8, and first centrifugal hammer assembly 9.
[0021] The embodiment is basically as shown in the attached Figure 1 -Attached Figure 7 As shown: a speed limiter action speed auxiliary detection device 2, including a speed limiter, a speed limiter base 6 and an original speed limiter switch 1, the speed limiter includes a speed limiter rope pulley 3, a speed limiter pawl triggering push rod 4, a speed limiter ratchet 5, a first centrifugal hammer assembly 9 and a second centrifugal hammer assembly 8, the speed limiter is fixedly connected to the outside of the speed limiter with a detection device 2, the detection device 2 includes a box 201, a spring 202, a guide block 203 and a paddle 204, the paddle 204 is in a teardrop shape, the left end of the spring 202 is fixedly connected to the left side of the box 201, and the right end of the spring 202 is fixedly connected to the left side of the box 201. The guide block 203 is fixedly connected, and the guide block 203 is rotatably connected to the bottom end of the paddle 204. The paddle 204 is located on the right side of the box body 201 and can be rotated out of the box body 201. When the paddle 204 is rotated out of the box body 201, it contacts the speed governor rope wheel 3. The rotating surface of the paddle 204 and the rotating surface of the first centrifugal hammer assembly 9 are located in the same horizontal plane. After the detection is completed, when the paddle 204 is in the rotated-out state, the speed governor action speed does not deviate seriously. When the paddle 204 is in the box body 201, the speed governor action speed deviates.
[0022] The specific implementation process is as follows: when it is necessary to calibrate the speed of the speed governor, the paddle 204 is rotated out of the box 201, and one end of the paddle is in contact with the speed governor sheave 3. At this time, the detection device 2 is in the detection state. After starting the elevator and running at the rated speed once, the position of the paddle 204 of the detection device 2 is observed after the elevator runs. If the paddle 204 remains in contact with the speed governor sheave 3, it is in the test position, and it is judged that the speed governor action speed has seriously deviated, and a special calibrator is needed to perform further verification and confirmation. If the paddle 204 is ejected by the speed governor pawl triggering the push rod 4 due to the normal rotation speed of the second centrifugal hammer assembly 8, and the paddle is away from the speed governor sheave 3, it is in the non-test position, and it is judged that the speed governor action speed has not deviated.
Claims
1. A speed governor operating speed auxiliary detection device, comprising a speed governor, a speed governor base, and an original speed governor switch, wherein the speed governor comprises a speed governor sheave, a speed governor pawl triggering push rod, a speed governor ratchet, a first centrifugal hammer assembly, and a second centrifugal hammer assembly, characterized in that: The speed limiter is externally connected with a detection device, which includes a box body and a paddle. The paddle is connected to the box body and can be rotated outwards. When the paddle is rotated out of the detection device, it contacts the speed limiter rope wheel.
2. The speed governor operating speed auxiliary detection device according to claim 1, characterized in that: One end of the box body is connected to a spring, the spring is connected to a guide block, and the guide block is connected to the paddle.
3. The speed governor operating speed auxiliary detection device according to claim 2, characterized in that: The paddle is in a water drop shape.
4. The speed governor operating speed auxiliary detection device according to claim 3, characterized in that: The rotating surface of the paddle and the rotating surface of the first centrifugal hammer assembly are located on the same horizontal plane.
5. The speed governor operating speed auxiliary detection device according to claim 4, characterized in that: When the paddle is in the rotated-out state, the speed limiter action speed deviates seriously; when the paddle is in the box, the speed limiter action speed does not deviate.