A comprehensive testing device for an elevator sheave system

Abstract

This invention provides a comprehensive testing device for elevator sheave systems, including a frame, a traction machine, a car, a counterweight, a first sheave testing assembly, and a second sheave testing assembly. Multiple steel wire ropes are wound around the traction machine on the upper part of the frame. The car and counterweight are connected to both ends of the steel wire ropes and can move vertically. The first sheave testing assembly has a movable first sheave body inside its housing, equipped with a heater or ultraviolet generator. Inclined fixing slots on both sides allow for the detachable installation and repositioning of the first sheave body's axle. The housing contains temperature and humidity sensors. The second sheave testing assembly has a lifting assembly mounted on a sliding support base on its base, allowing adjustment of the second sheave body's height. The car and counterweight hold weights via the frame. The frame is equipped with an industrial camera and a decibel meter to monitor the condition of the steel wire ropes and the noise of the sheaves. This device can simulate real-world working conditions, enabling testing of the sheave system's compatibility, wear, aging, and noise levels.

Description

Technical Field

[0001] This utility model relates to the field of elevator comprehensive testing technology, specifically to a comprehensive testing device for elevator sheave systems. Background Technology

[0002] With the rapid pace of urbanization in my country, a large number of high-rise and high-speed elevators have been installed in urban high-rise residential buildings, becoming an indispensable vertical transportation tool in people's lives. At the same time, the safe and reliable operation of elevators has become a basic expectation for elevator users. In recent years, elevator malfunctions or accidents caused by the performance of elevator components have occurred frequently, becoming a major concern. The elevator sheave system is one of the important components ensuring the safe and stable operation of elevators. Therefore, it is necessary to inspect the performance of the elevator sheave system, such as sheave matching tests, dynamic thermo-mechanical coupling wear tests of the sheave and wire rope, sheave aging (life) tests, and sheave noise tests under different loads and speeds, to ensure the safe operation of the elevator. Existing technologies largely focus on macroscopic performance testing, specifically continuous testing using wire rope fatigue testing machines until the wire rope fails. However, there is insufficient research on the wear of the wire rope and sheaves, and a lack of systematic sheave life assessment methods. Regarding the sliding friction and wear mechanisms of sheave systems, the focus is primarily on material hardness optimization, with limited research on wear mechanisms and detection under frictional-thermal-mechanical coupling, and a lack of systematic reliability testing standards. Furthermore, there is a lack of research on sheave matching tests and noise testing of sheaves under different loads and speeds. Therefore, developing a comprehensive testing device for elevator sheave systems is an urgent problem that needs to be solved. Utility Model Content

[0003] To address the problems existing in the prior art, the purpose of this utility model is to provide a comprehensive testing device for elevator sheave systems, including a first sheave testing component and a second sheave testing component, which can perform macroscopic testing and microscopic feature monitoring of elevator sheave systems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A comprehensive testing device for elevator sheave systems includes: a frame; multiple steel wire ropes wound around a traction machine on the upper part of the frame; a car disposed on a first side of the frame and connected to one end of the steel wire ropes, the car moving vertically up and down within the frame; a counterweight disposed on a second side of the frame and connected to the other end of the steel wire ropes, the counterweight moving vertically up and down within the frame as the car moves; a first sheave testing assembly including a housing detachably disposed on the upper part of the frame, the upper part of the housing forming a communication port for receiving the steel wire ropes, a first sheave movably disposed within the housing, and a heater or ultraviolet generator disposed therewith; and a second sheave testing assembly including a base disposed on the lower part of the frame, a support seat slidably disposed on the base, wherein a lifting assembly is disposed on the support seat, and a second sheave detachably disposed on the upper part of the lifting assembly.

[0006] According to one example, the enclosure is also equipped with temperature and humidity sensors for monitoring environmental parameters.

[0007] According to one example, the box body has inclined fixing grooves on both sides, and the two ends of the first wheel body are detachably set in the fixing grooves by means of axles, and the first wheel body moves along the inclined direction of the fixing grooves to fix the installation position of the first wheel body.

[0008] According to one example, the lifting assembly includes a pair of telescopic rods symmetrically arranged at the lower part of the support base and a column disposed between the two telescopic rods, with the second wheel detachably disposed at the upper end of the column.

[0009] According to one example, a plurality of first guide blocks are provided on one side of the column along its height direction, and a first guide rail that cooperates with the first guide blocks is provided on the inner side of the support along its height direction.

[0010] According to one example, the bottom of the support is provided with a second guide block, and the upper part of the base is provided with a second guide rail that cooperates with the second guide block.

[0011] According to one example, a motor is provided on one side of the base, and a screw is provided at the output end of the motor. The screw passes through a threaded hole on the second guide block and extends to the other side of the base.

[0012] According to one example, the car includes a first frame mounted on the frame and a plurality of first weights arranged side by side therein, the first weights being disposed within the first frame and sliding up and down along the vertical direction of the first frame, the upper part of each first weight being connected to one end of each of the steel wire ropes, and a buffer being disposed at the bottom of the first frame.

[0013] According to one example, the counterweight includes a second frame mounted on the frame and a cage slidably mounted within the second frame, wherein a plurality of second weights are arranged in series within the cage, and the upper part of the cage is connected to the other end of the wire rope.

[0014] According to one example, an industrial camera is mounted on the frame, with the camera end of the industrial camera facing the wire rope wound around the first or second wheel; a decibel meter is mounted on the frame and is located near the first or second wheel.

[0015] This utility model has the following advantages:

[0016] This utility model's comprehensive testing device uses a traction machine as a power source. The car and counterweights simulate actual loads. The housing of the first sheave test component is equipped with a heater or ultraviolet generator, and its tilt and sliding adjustment are coordinated with the sliding support of the second sheave test component and the height adjustment of the second sheave. This enables multi-dimensional testing of the wire rope under different wrap angles, environments, and loads. Simultaneously, industrial cameras, decibel meters, and other monitoring equipment collect data to analyze the matching, wear, aging, and noise issues of the sheave system. Compared to existing single and macroscopic testing equipment, this device improves the comprehensiveness and accuracy of elevator sheave system performance testing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the comprehensive testing device for elevator rope pulley systems according to this utility model.

[0018] Figure 2 This is the front view of the comprehensive testing device for elevator rope pulley systems according to this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the counterweight of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the car of this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the first rope wheel test component of this utility model.

[0022] Figure 6 This is a three-dimensional sectional view of the first rope wheel test component of this utility model.

[0023] Figure 7 This is a three-dimensional structural diagram of the second rope wheel test assembly of this utility model.

[0024] Figure 8This is an exploded perspective view of the second rope wheel test assembly of this utility model.

[0025] Wherein, 1 is the frame, 2 is the wire rope, 3 is the traction machine, 4 is the car, 401 is the first frame, 402 is the first weight, 403 is the buffer, 404 is the first guide wheel, 5 is the counterweight, 501 is the second frame, 502 is the cage, 503 is the second weight, 504 is the second guide wheel, 6 is the first rope wheel test assembly, 601 is the housing, 601a is the connecting port, 601b is the fixing slot, and 602 is the first... The first wheel body consists of: 602a (shaft), 7 (second rope wheel test assembly), 701 (base), 701a (second guide rail), 701b (motor), 701c (screw), 702 (support seat), 702a (first guide rail), 702b (second guide block), 702b1 (threaded hole), 703 (lifting assembly), 703a (telescopic rod), 703b (column), 703b1 (first guide block), and 704 (second wheel body). Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figure 1 The illustration shows an embodiment of a comprehensive testing device for elevator sheave systems. The device mainly includes a frame 1, a traction machine 3, a car 4, a counterweight 5, a first sheave testing assembly 6, and a second sheave testing assembly 7. It can test the comprehensive performance of the sheave system, such as matching tests, dynamic thermo-mechanical coupling wear tests of the sheave body and wire rope 2, life aging tests, and sheave noise tests under different loads and speeds to simulate relatively real working conditions.

[0028] Reference Figure 1 and Figure 2 The frame 1 is a rectangular frame structure, welded from No. 10 channel steel and steel plates to ensure the strength of the support. After the welding is firm, it is coated with anti-rust paint and then painted. The frame 1 provides a supporting foundation for the traction machine 3, the car 4, the counterweight 5, the first rope sheave test assembly 6, and the second rope sheave test assembly 7. In this embodiment, the overall length of the frame 1 is 6m and the height is 8m. The traction machine 3 is set on the upper part of the frame 1, the car 4 is set on the first side of the frame 1, the counterweight 5 is set on the second side of the frame 1, and the first rope sheave test assembly 6 and the second rope sheave test assembly 7 are set on the frame 1 and located between the car 4 and the counterweight 5. They are connected together by multiple steel wire ropes 2. One end of the steel wire rope 2 is connected to the car 4, and the other end of the steel wire rope 2 is sequentially wrapped around the second rope sheave test assembly 7, the traction machine 3, and the first rope sheave test assembly 6 and connected to the counterweight 5.

[0029] Reference Figure 1 and Figure 2The traction machine 3 includes a drive unit and a traction sheave located at the output end of the drive unit. The drive unit is fixed to the top of the frame 1. Multiple steel wire ropes 2 are wound around the traction sheave. Speed ​​measuring instruments are installed on the circumferential wall of the traction sheave and on the steel wire ropes 2 to monitor the rotational speed of the traction sheave and the running speed of the steel wire ropes 2. By testing the speed of the traction sheave and the steel wire ropes 2, the slippage of the steel wire ropes 2 on the drive unit is obtained. The drive unit is also equipped with a clamping device to press the drive unit firmly against the top of the frame 1.

[0030] Reference Figure 1 and Figure 4 The car 4 is located on the first side of the frame 1 and connected to one end of the wire rope 2. The car 4 moves up and down vertically within the frame 1. The car 4 includes a first frame 401 mounted on the frame 1 and multiple first weights 402 arranged side by side within it. The first weights 402 are located within the first frame 401 and slide up and down vertically along the first frame 401. The upper part of each first weight 402 is connected to one end of each wire rope 2. That is, when there are 8 wire ropes 2, there are 8 first weights 402. A first guide wheel is provided above the car 4 and fixed to the upper part of the frame 1. Multiple support rods are vertically arranged on both sides of the first frame 401. Both ends of each first weight 402 are threaded through the support rods. The support rods are used to guide the sliding of the first weights 402 and ensure the stability of the first weights 402 during movement. The first weight 402 includes multiple sub-weights, the number of which can be configured according to different testing requirements, thereby adjusting the load borne by each rope 2. Specifically, each sub-weight has threaded holes 702b1 at both ends, which are connected in series by a connecting plate. The connecting plate has multiple through holes at equal intervals, corresponding to the threaded holes 702b1 at the ends of the sub-weights, and are then detachably connected by screws. First, the uppermost sub-weight is fixed to the connecting plate with screws, and then the load can be applied step by step according to the testing requirements. When connecting the second sub-weight, the second sub-weight is fixed to the connecting plate by screwing in screws, and then connected in series with the first sub-weight to achieve double-weight loading. This configuration, with the screw connection controlling the loading quantity, meets the testing requirements under different load conditions. In addition, a buffer 403 is configured at the bottom of the first frame 401. The buffer 403 at the bottom of the first frame 401 can effectively buffer the impact force generated by the movement of the weight during the up and down movement of the first weight 402, protecting the structure of the car 4.

[0031] Reference Figure 1 and Figure 3The counterweight 5 is located on the second side of the frame 1 and connected to the other end of the wire rope 2. The counterweight 5 moves vertically up and down within the frame 1 as the car 4 moves. The counterweight 5 includes a second frame 501 mounted on the frame 1 and a cage 502 slidably mounted within the second frame 501. Multiple second weights 503 are arranged in series within the cage 502, stacked together. The upper part of the cage 502 is connected to the other end of the wire rope 2. A second guide wheel 504 is located above the counterweight 5 and fixed to the upper part of the frame 1. Multiple mounting holes are provided along the length of the upper part of the frame 1. The second guide wheel 504 is detachably mounted in one of these mounting holes, allowing for horizontal adjustment. Each second weight 503 weighs 500 kg. An limit position switch is located at the end of the travel of the cage 502. When the second weight 503 reaches the end of its travel and triggers the limit position switch, the equipment stops for protection. The load on the rope wheel is simulated by adjusting the number of the first weight 402 and the second weight 503.

[0032] Reference Figure 1 , 5 The first rope pulley test assembly 6 includes a housing 601 detachably mounted on the upper part of the frame 1. The housing 601 has a detachable cuboid structure, with both its outer and inner walls made of high-strength steel plates. The inner wall is equipped with a heat insulation layer, an ultraviolet radiation protection layer, and a sound insulation layer. The upper part of the housing 601 has an open, strip-shaped connecting opening 601a for receiving the steel wire rope 2. The connecting opening 601a is filled with insulation material to prevent heat loss.

[0033] The first wheel 602 is movably installed inside the housing 601 and is equipped with a heater or ultraviolet generator. Temperature and humidity sensors are also installed inside to monitor environmental parameters. By adjusting the position of the first wheel 602 within the housing 601, and by increasing or decreasing the number of weights on the car 4 and counterweight 5 to simulate actual loads, and by using the heater or ultraviolet generator to simulate different environments, reliability testing and aging testing of the wire rope 2 under different wrap angles on the first wheel 602 can be performed.

[0034] The housing 601 has inclined fixing grooves 601b on both sides, with the angle between the inclined direction and the length direction of the housing 601 being 30-60°. The axles 602a at both ends of the first wheel 602 are detachably mounted in the fixing grooves 601b and can move along the inclined direction of the fixing grooves 601b to fix the installation position of the first wheel 602. The detachable mechanism uses a bolt connection structure, including fixing seats detachably mounted on both sides of the first wheel 602 and retaining rings detachably mounted on the upper part of the fixing seats. The fixing seats are C-shaped metal components, including horizontal plates arranged parallel to each other and a side plate connecting the two horizontal plates. The side of the fixing seat has mounting holes, allowing it to be detachably mounted to the outer wall of the housing 601 by bolts, enabling quick assembly and disassembly of the first wheel. Furthermore, the upper parts of both sides of the housing 601 have strip-shaped grooves connected to one end of the fixing grooves 601b, facilitating the installation of the first wheel 602 into the fixing grooves 601b.

[0035] The heater can be an infrared radiation heater, a hot air circulation heater, etc., with a set temperature range of 20℃ to 90℃ and a set humidity range of 20%RH to 95%RH. The ultraviolet generator can be a fluorescent ultraviolet lamp, a mercury lamp ultraviolet generator, etc., with a maximum irradiance of 0.68W / m². 2 .

[0036] In an embodiment not shown, the housing 601 is a modular structure, comprising a base plate and four side plates that are detachably disposed on the base plate and extend upwards from the sides. The top of the housing 601 forms an opening for receiving a pulley. Each plate is detachable, facilitating the installation of the pulley inside the housing 601.

[0037] Reference Figure 1 , 7 The second rope pulley test assembly 7 includes a base 701 located at the lower part of the frame 1. The base 701 is a plate-shaped component, horizontally positioned at the bottom of the frame 1. A vertically arranged support seat 702 is slidably mounted on the base 701, and the support seat 702 can slide along the length of the base 701. A lifting assembly 703 is mounted on the support seat 702, and a second wheel 704 is detachably mounted on the upper part of the lifting assembly 703. This second wheel 704 is used to drive the second wheel 704 to move up and down to adjust its height position, thereby adjusting the wrap angle of the wire rope 2 on the second wheel 704. The wrap angle is 45-180° to test the wear condition of the wheel and wire rope at different wrap angle positions.

[0038] Specifically, the support base 702 includes a base plate slidably connected to the base 701 and three vertically arranged side plates, forming an open space on one side to accommodate the lifting assembly 703 and the second wheel 704. A slot is formed on the side plate opposite to the open space for the steel wire rope 2 to pass through.

[0039] The lifting assembly 703 includes a pair of telescopic rods 703a symmetrically arranged at the lower part of the support base 702 and a column 703b disposed between the two telescopic rods 703a. The lower end of the telescopic rod 703a is fixed to the base plate, and its free end is fixed to the upper part of the column 703b. In this embodiment, the telescopic rod 703a is a hydraulic rod, which drives the column 703b to move up and down through a hydraulic cylinder at the bottom, thereby driving the second wheel 704 to move up and down.

[0040] The column 703b has multiple first guide blocks 703b1 arranged along its height on one side, and a first guide rail 702a that cooperates with the first guide blocks 703b1 is arranged along its height on the inner side of the support base 702, allowing the column 703b to move vertically during lifting and lowering. There are two first guide rails 702a and six first guide blocks 703b1, with one first guide rail 702a corresponding to three first guide blocks 703b1.

[0041] A second guide block 702b is provided at the bottom of the support base 702, and a second guide rail 701a is provided on the upper part of the base 701 to cooperate with the second guide block 702b. There are two second guide rails 701a. A motor 701b is provided on one side of the base 701, and a screw 701c is provided at the output end of the motor 701b. The screw 701c passes through the threaded hole 702b1 on the second guide block 702b and extends to the other side of the base 701 to realize the lateral adjustment of the second pulley assembly. The motor 701b drives the screw 701c to rotate. With the cooperation of the screw 701c and the threaded hole 702b1, the second guide block 702b drives the support base 702 to move, thereby adjusting the longitudinal position of the second wheel body 704. During testing, the actual load is simulated by controlling the speed, direction, and frequency of the drive unit, and by adjusting the amount of weights on the car 4 and counterweight 5. Simultaneously, the wrap angle of the second pulley body 704 is adjusted via the second pulley test assembly 7, causing the test section of the wire rope 2 to periodically enter and exit the rope groove of the second pulley body 704, creating periodic sliding friction between the outer surface of the wire rope 2 and the rope groove. This simulation process realistically reproduces the actual working state of the elevator pulley system, enabling matching tests of the pulley system and analysis of the wear characteristics and compatibility performance of the wire rope 2 and the pulley under dynamic friction.

[0042] The structure of the first wheel body 602 is adjusted by tilting the first rope wheel assembly 6, and the horizontal and vertical displacement of the second wheel body 704 is adjusted by the second rope wheel assembly 7, so as to adjust the wrap angle of the wire rope on the traction wheel.

[0043] In an embodiment not shown, an industrial camera is mounted on the frame 1, with its camera end facing the wire rope 2 wound around the first sheave 602 or the second sheave 704. The industrial camera can collect microscopic image data of the wire rope 2, such as broken wires, severe wear, corrosion, diameter changes, abnormal lay, etc., and severe wear, cracks, eccentricity, and surface peeling of the first sheave 602 and the second sheave 704, providing a visual basis for analyzing the matching and wear degree of the sheave system. A decibel meter is mounted on the frame 1, located near the first sheave 602 or the second sheave 704, and can capture the noise signals generated by the sheaves under different loads and speeds, realizing comprehensive monitoring of the overall performance of the elevator sheave system.

[0044] The specific winding path of the steel wire rope 2 is as follows: one end of each steel wire rope 2 is fixed to the upper end of each first weight 402 inside the car 4, and the other end passes sequentially through the first guide wheel 404, the second wheel body 704 of the second rope wheel test assembly 7, the traction sheave of the drive unit, the first wheel body 602 and the second guide wheel 504 of the first rope wheel test assembly 6, and finally connects to the top of the cage 502 of the counterweight 5. This winding method forms a closed-loop transmission system, which can simulate the actual operating conditions of the elevator. The first wheel body 602 and the second wheel body 704 are made of cast iron or nylon, and there are 8 steel wire ropes 2. The first wheel body 602 and the second wheel body 704 also have 8 grooves. The number of steel wire ropes 2 and the number of grooves in the first wheel body 602 and the second wheel body 704 can be configured according to the test needs, such as 6, 10, etc.

[0045] In an embodiment not implemented, the integrated testing device also includes a control device, which is mounted on or outside the frame 1, for circuit control of the running speed, direction and repetitive running frequency of the traction machine 3, as well as for collecting data from devices such as a speed measuring instrument, temperature sensor, humidity sensor, industrial camera and decibel meter.

[0046] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention should be considered equivalent substitutions and are included within the protection scope of the present invention. The embodiments described in this disclosure are intended as non-limiting examples, and other embodiments may take various and alternative forms. Furthermore, the drawings are not necessarily to scale and may present simplified expressions of various features of the present disclosure, including, for example, specific dimensions, orientations, positions, and shapes. Details associated with such features will be determined in part by the intended application and usage environment of the described embodiments.

[0047] The detailed description and accompanying drawings are supporting and descriptive of this teaching, but the scope of this teaching is defined only by the claims. While the best mode and some other embodiments for carrying out this teaching have been described in detail, various alternative designs and embodiments exist for practicing the teaching as defined in the appended claims. Furthermore, this disclosure expressly includes combinations and sub-combinations of the elements and features set forth above and below.

Claims

1. A comprehensive testing device for elevator pulley systems, characterized in that, include: frame; Multiple steel wire ropes are wound around the traction machine on the upper part of the frame; A car is disposed on the first side of the frame and connected to one end of the wire rope, and the car moves up and down in the vertical direction within the frame; A counterweight is provided on the second side of the frame and connected to the other end of the wire rope. The counterweight moves vertically up and down within the frame as the car moves. The first rope wheel test assembly includes a housing detachably disposed on the upper part of the frame, the upper part of the housing having a communication port for receiving the wire rope, a first wheel body movably disposed inside the housing, and a heater or ultraviolet generator disposed therein. The second rope wheel testing assembly includes a base disposed at the lower part of the frame, a support seat slidably disposed on the base, wherein a lifting assembly is disposed on the support seat, and a second wheel body is detachably disposed on the upper part of the lifting assembly.

2. The comprehensive testing device according to claim 1, characterized in that, The enclosure is also equipped with temperature and humidity sensors for monitoring environmental parameters.

3. The comprehensive testing device according to claim 1, characterized in that, The box body has inclined fixing grooves on both sides. The two ends of the first wheel are detachably set in the fixing grooves through axles, and the first wheel moves along the inclined direction of the fixing groove to fix the installation position of the first wheel.

4. The comprehensive testing device according to claim 1, characterized in that, The lifting assembly includes a pair of telescopic rods symmetrically arranged at the lower part of the support base and a column arranged between the two telescopic rods, and the second wheel is detachably arranged at the upper end of the column.

5. The comprehensive testing device according to claim 4, characterized in that, The column has a plurality of first guide blocks on one side along its height direction, and the support base has a first guide rail that cooperates with the first guide blocks on its inner side along its height direction.

6. The comprehensive testing apparatus according to claim 4, characterized in that, The bottom of the support base is provided with a second guide block, and the upper part of the base is provided with a second guide rail that cooperates with the second guide block.

7. The comprehensive testing apparatus according to claim 6, characterized in that, A motor is provided on one side of the base, and a screw is provided at the output end of the motor. The screw passes through a threaded hole on the second guide block and extends to the other side of the base.

8. The comprehensive testing device according to claim 1, characterized in that, The car includes a first frame mounted on the frame and a plurality of first weights arranged side by side therein. The first weights are disposed in the first frame and slide up and down along the vertical direction of the first frame. The upper part of each first weight is connected to one end of each wire rope. A buffer is disposed at the bottom of the first frame.

9. The comprehensive testing device according to claim 1, characterized in that, The counterweight includes a second frame mounted on the frame and a cage slidably mounted within the second frame. Multiple second weights are arranged in series within the cage, and the upper part of the cage is connected to the other end of the wire rope.

10. The comprehensive testing apparatus according to claim 1, characterized in that, An industrial camera is mounted on the frame, with the camera end of the industrial camera facing the steel wire rope wrapped around the first or second wheel; a decibel meter is mounted on the frame, and the decibel meter is located near the first or second wheel.

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