A testing machine for testing fatigue wear of elevator drive wheels

Abstract

The present invention discloses a testing machine for testing fatigue wear of elevator transmission wheels, characterized in that it comprises a frame and a control device, wherein a transmission wheel is arranged in the frame through a fixed seat, and the transmission wheel is connected to a driving wheel module and an angle wheel through a steel rope; the steel rope is provided with a rope head assembly capable of adjusting the tension of each steel rope individually; the driving device comprises a first motor module and a driving wheel module, the motor module is electrically connected to the control device, the driving wheel module is connected to the transmission wheel through a steel rope, and the control device can control the motor module to drive the transmission wheel to rotate back and forth through the driving wheel module; the load loading device is connected to the fixed seat; the angle adjustment device comprises an angle wheel and an angle adjustment seat. Compared with the prior art, the present invention has the following advantages: the testing machine for testing fatigue wear of elevator transmission wheels can simulate the actual operating state of the elevator, can realize multi-purpose use of one machine for the existing elevator types, and ensure compatibility, convenience and standardization.

Description

Technical Field

[0001] The invention relates to the technical field of elevator detection devices, in particular to a testing machine for checking fatigue wear of elevator transmission wheels. Background Art

[0002] Elevators are vertical transportation equipment and vehicles that transport passengers or goods up and down in buildings. In modern society, people have become accustomed to elevators as vertical transportation tools and are increasingly dependent on them. Like any means of transportation, while elevators save people time and energy, they also inevitably bring certain risks. In order to minimize this risk, people have been exploring elevator safety for many years, making its safety measures more perfect and providing services for life and production more safely. Therefore, the accessories in elevators generally need to be tested by testing equipment for multiple performance indicators to ensure their safety performance.

[0003] The existing elevator drive wheel inspection generally allows the drive wheel to reciprocate at a certain speed and frequency, observes the wear of the drive wheel after the drive wheel runs for a certain time and number of turns, and inspects the performance indicators of the drive wheel. However, the existing elevator drive wheel inspection equipment cannot conveniently adjust the wrap angle and load of the wire rope acting on the drive wheel on the one hand, and cannot freely set its speed, running time and number of turns on the other hand. It lacks automatic counting, timing and automatic shutdown, and cannot automatically generate experimental data and curves. Therefore, a testing machine for inspecting the fatigue wear of elevator drive wheels is currently needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems of the prior art and provide a testing machine for checking fatigue wear of elevator drive wheels.

[0005] In order to achieve the above object, the present invention adopts the following scheme:

[0006] A testing machine for testing fatigue wear of elevator drive wheels, including a frame and a control device. When the test machine runs for a set working time and number of times, the control device can control it to automatically stop. The frame is similar to the elevator shaft frame, and is equipped with a safety door for motor maintenance, a platform for replacing and installing the drive wheel, a movable door for hoisting the drive wheel, and a rotating ladder, which can replace the drive wheel, the transmission wheel and the angle wheel. The safety door and the frame are sealed with a transparent acrylic plate, which is conducive to dust prevention and observation of the machine operation.

[0007] The rack contains:

[0008] Transmission wheel, the transmission wheel is arranged in the frame through a fixed seat, and the transmission wheel is connected with the driving wheel module and the angle wheel through a steel rope;

[0009] Steel ropes, located between the transmission wheel and the drive wheel, are equipped with rope head components that can adjust the tension of each steel rope individually; different transmission wheels are equipped with steel ropes of different rope diameters (commonly used are 8, 10, 12, and 16 mm), and different steel ropes must be replaced for different rope diameters. The length of the steel rope is different at different wrap angles. When the wrap angle is 110°, the length of the steel rope is 12 meters (the longest), and when the wrap angle is 70°, the length of the steel rope is 11 meters (the shortest). When adjusting the wrap angle, there is no need to replace the steel rope, only adjust the length of the steel rope.

[0010] The driving device includes a first motor module and a driving wheel module. The motor module is electrically connected to the control device. The driving wheel module is connected to the transmission wheel through a steel rope. The control device can control the motor module to drive the transmission wheel to rotate back and forth through the driving wheel module.

[0011] A load loading device, the load loading device is connected to the fixed seat, and the load loading device drives the driving wheel on the fixed seat to reciprocate up and down to load and unload the load of the driving wheel;

[0012] The angle adjustment device comprises an angle wheel and an angle adjustment seat. The angle wheel can move up and down through the angle adjustment seat to adjust the angle of the steel rope to the transmission wheel.

[0013] The testing principle of the testing machine used to test the fatigue wear of the elevator drive wheel is as follows: the drive wheel, the angle wheel and the transmission wheel are connected by steel ropes, and the steel rope joints are connected by rope head assemblies. The drive wheel can be automatically loaded with load by the drive device, and the angle of the angle wheel can be manually adjusted between the steel rope and the drive wheel through the angle adjustment seat. After adjusting the load and angle of the drive wheel, the drive device drives the drive wheel to rotate forward and reverse, and the drive wheel drives the drive wheel and the angle wheel to rotate forward and reverse at a certain speed through the steel rope to ensure that the drive wheel can rotate a full circle when rotating forward and reverse, and to ensure that the steel rope and the groove of the drive wheel are in contact and wear evenly when rotating. Compare and measure the wear conditions such as the depth value difference of the groove before and after the test wheel test, so as to test the performance indicators of the drive wheel.

[0014] Furthermore, the driving wheel module includes:

[0015] A driving shaft, on which a sprocket, a fixed bearing seat, a driving wheel and a movable bearing seat are arranged, and the driving shaft is arranged in the frame through the fixed bearing seat and the movable bearing seat;

[0016] A movable bearing seat, which is arranged on the first slide rail. The movable bearing seat can be moved left and right through the first slide rail. When the movable bearing seat is loosened, it can be moved away through the first slide rail to install or remove the drive wheel;

[0017] The driving wheel is located between the fixed bearing seat and the movable bearing seat. The driving wheel is made of cast iron. Different steel ropes use different driving wheels. The groove pitch of the driving wheel is unified to 16mm, and the number of grooves is 9. One end of the driving wheel is a fixed bearing seat and the other end is a movable bearing seat, which is convenient for the replacement of the driving wheel and improves the experimental efficiency. The first groove of the driving wheel is the reference groove, and the transmission wheels and angle wheels with different groove numbers are aligned from 1 to 9.

[0018] The sprocket is arranged at one end of the driving shaft, the sprocket is connected to the first motor module through a chain, and the first motor module can drive the driving wheel to rotate back and forth on the driving shaft through the sprocket.

[0019] Furthermore, the first motor module includes a first bracket and a first drive motor and a first reducer fixed on the first bracket.

[0020] Furthermore, the load loading device comprises:

[0021] A second motor module, the second motor module includes a second drive motor and a second reducer;

[0022] A coupling, one end of which is connected to the second motor module and the other end of which is connected to the first screw rod;

[0023] A first screw rod, one end of which is connected to the coupling and the other end of which is connected to the fixed seat. The first screw rod can drive the transmission wheel on the fixed seat to reciprocate up and down under the drive of the coupling to load and unload the load of the transmission wheel;

[0024] The pressure sensor is arranged between the first screw rod and the fixing seat and is connected to the control device. The control device can obtain the real-time load of the transmission wheel through the pressure sensor.

[0025] Further, the rope head assembly includes:

[0026] A positive and negative thread nut, wherein the upper end of the positive and negative thread nut is provided with a first negative thread screw rod, an upper heart ring and an upper snap ring, and the lower end thereof is provided with a first positive thread screw rod, a lower heart ring and a lower snap ring;

[0027] An upper center distance component, which is arranged above the upper chicken heart ring;

[0028] The lower center distance component is arranged below the lower chicken heart ring, the lower center distance component is connected to the fixing seat through a distance clamping plate, and the lower center distance component is positioned through the distance clamping plate.

[0029] Furthermore, the distance clamping plate can keep the starting center distance from the rope head assembly to the transmission wheel at 350mm≤L≤450mm.

[0030] Furthermore, both the upper center distance component and the lower center distance component are provided with infrared travel switches connected to the control device, and the infrared travel switches can prevent the steel rope from slipping and causing the rope head component to rush through the test wheel.

[0031] Furthermore, the fixed seat includes a first assembly bearing and a second slide rail, the second slide rail is provided with a first slider, the first slider is provided with a first fixed seat, a first pressure block and a first axial locking block for fixing the first assembly bearing, the transmission wheel is installed on the second slide rail through the first assembly bearing, the transmission wheel is assembled with the shaft, bearing and retaining spring and then installed into the first fixed seat, and then locked and fixed by the first pressure block and the first axial locking block. Transmission wheels with different numbers of grooves are all positioned at the left end, and the distance between the first groove at the left end and the first fixed seat on the left is the same. Different transmission wheels are equipped with different shafts, bearings and retaining springs, and the diameters of the two ends of the shafts of different transmission wheels are the same, and different transmission wheels share the first fixed seat.

[0032] The load loading device can drive the transmission wheel to reciprocate up and down in the second slide rail.

[0033] Furthermore, the angle adjustment seat includes a second assembly bearing, a third slide rail, and a scale and a second screw arranged on both sides of the third slide rail. The third slide rail is provided with a second slider, and the second slider is provided with a second fixed seat, a second pressure block and a second axial locking block for fixing the second assembly bearing. The third slide rail is provided with a blocking block for preventing the displacement of the angle wheel when the transmission wheel is loaded with a load. The side of the second slider is provided with an indicator needle corresponding to the scale, and the angle of the steel rope on the transmission wheel can be read through the indicator needle and the scale. The shaft, bearing, retaining ring and installation and fixing method of the angle wheel are the same as those of the transmission wheel. After assembling the angle wheel, turn the left and right handles at the same time, drive the angle wheel up and down through the screw to adjust the angle, and the value of the scale indicated by the indicator needle is the angle value. The angle adjustment range is 70°~110°.

[0034] Furthermore, the control device includes a display unit, a central control unit, a load setting unit, a speed setting unit, a running time setting unit and a number of turns setting unit. The load setting unit is connected to the load loading device, and the speed setting unit, the running time setting unit and the number of turns setting unit are connected to the driving device. The central control unit can collect experimental data to generate tables and graphs.

[0035] Compared with the existing technology, the present invention has the following advantages: the testing machine for testing the fatigue wear of the elevator transmission wheel can simulate the actual operation state of the elevator, the steel rope acts on the transmission wheel, adjusts different wrap angles to apply a certain load, reciprocates at a certain speed and frequency, and observes the wear of the transmission wheel after the transmission wheel runs for a certain time and number of turns, thereby testing the performance index of the transmission wheel. The load of the transmission wheel can be automatically loaded through the load loading device, and the wrap angle can be manually adjusted through the second screw rod, realizing the free setting and display of the load, speed, running time and number of turns of the testing machine. At the same time, the testing machine can automatically generate experimental data and curves, and the USB interface can be led to a U disk. The testing machine can be suitable for transmission wheels of different specifications, with a maximum speed of 3m / s; a maximum load of 5000KG; an angle adjustment range of 70-110°; a maximum stroke of 2100mm; and a maximum test wheel pitch diameter of 640mm. For existing elevator types, one machine can be used for multiple purposes, ensuring compatibility, convenience and standardization. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Figure 1 The invention is a schematic structural diagram of a frame and a control device of a testing machine for inspecting fatigue wear of an elevator driving wheel.

[0038] Figure 2 The utility model is a schematic diagram of the overall internal structure of a frame of a testing machine for inspecting fatigue wear of an elevator driving wheel according to the present invention.

[0039] Figure 3 The present invention is a schematic diagram of the structure of a driving device of a testing machine for inspecting fatigue wear of an elevator driving wheel.

[0040] Figure 4 The invention is a schematic structural diagram of an angle adjustment device of a testing machine for inspecting fatigue wear of an elevator drive wheel.

[0041] Figure 5 The present invention is a schematic diagram of the structure of a load loading device of a testing machine for inspecting fatigue wear of an elevator drive wheel.

[0042] Figure 6 The present invention is a schematic structural diagram of a rope head assembly and a load loading device of a testing machine for inspecting fatigue wear of an elevator drive wheel. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0044] like Figure 1 and 2 As shown, a testing machine for testing fatigue wear of elevator drive wheels includes a frame 1 and a control device 2. When the testing machine runs for a set working time and number of times, the control device 2 can control it to automatically stop. The frame 1 is similar to the elevator shaft frame, and is equipped with a safety door for motor maintenance, a platform for replacing and installing the drive wheel 509, a movable door for hoisting the drive wheel 509, and a rotating climbing ladder, which can replace the drive wheel 509, the drive wheel 3 and the angle wheel 801. The safety door and the frame 1 are sealed with a transparent acrylic plate, which is conducive to dust prevention and observation of the machine operation.

[0045] Rack 1 contains:

[0046] The transmission wheel 3 is arranged in the frame 1 through the fixing seat 7, and the transmission wheel 3 is connected with the driving wheel module 504 and the angle wheel 801 through the steel rope 4;

[0047] Steel rope 4, steel rope 4 is located between transmission wheel 3 and driving wheel 509, and is provided with a rope head assembly that can adjust the tension of each steel rope 4 individually; different transmission wheels 3 are equipped with steel ropes 4 of different rope diameters (commonly used are 8, 10, 12, 16mm), and different steel ropes 4 must be replaced for different rope diameters. The length of steel rope 4 is different at different wrap angles. When the wrap angle is 110°, the length of steel rope 4 is 12 meters (the longest), and when the wrap angle is 70°, the length of steel rope 4 is 11 meters (the shortest). When only adjusting the wrap angle, there is no need to replace steel rope 4, only to adjust the length of steel rope 4.

[0048] like Figure 3 As shown, the driving device 5 includes a first motor module 501 and a driving wheel module 504. The motor module is electrically connected to the control device 2. The driving wheel module 504 is connected to the transmission wheel 3 through a steel rope 4. The control device 2 can control the motor module to drive the transmission wheel 3 to rotate back and forth through the driving wheel module 504.

[0049] A load loading device 6, which is connected to a fixed seat 7, and drives the transmission wheel 3 on the fixed seat 7 to reciprocate up and down so as to load and unload the load of the transmission wheel 3;

[0050] like Figure 4 As shown, the angle adjustment device 8 includes an angle wheel 801 and an angle adjustment seat 802. The angle wheel 801 can move up and down through the angle adjustment seat 802 to adjust the angle of the steel rope 4 to the transmission wheel 3.

[0051] The testing principle of the testing machine for testing the fatigue wear of the elevator drive wheel 3 is as follows: the driving wheel 509, the angle wheel 801 and the drive wheel 3 are connected by the steel rope 4, and the joint of the steel rope 4 is connected by a rope head assembly. The drive wheel 3 can be automatically loaded with load by the driving device 5, and the angle wheel 801 can manually adjust the angle between the steel rope 4 and the drive wheel 3 through the angle adjustment seat 802. After adjusting the load and angle of the drive wheel 3, the driving device 5 drives the drive wheel 3 to rotate forward and reverse, and the driving wheel 509 drives the drive wheel 3 and the angle wheel 801 to rotate forward and reverse at a certain speed through the steel rope 4, ensuring that the drive wheel 3 can rotate a full circle when rotating forward and reverse, and ensuring that the grooves of the steel rope 4 and the drive wheel 3 are in contact and wear evenly when rotating. The wear conditions such as the depth value difference of the test wheel before and after the test are compared and measured, so as to test the performance indicators of the drive wheel 3.

[0052] Preferably, Figure 3 As shown, the driving wheel module 504 includes:

[0053] A driving shaft 507, on which a sprocket 506, a fixed bearing seat 508, a driving wheel 509 and a movable bearing seat 510 are arranged, and the driving shaft 507 is arranged in the frame 1 through the fixed bearing seat 508 and the movable bearing seat 510;

[0054] A movable bearing seat 510, which is disposed on a first slide rail 511. The movable bearing seat 510 can be moved left and right through the first slide rail 511. When the movable bearing seat 510 is loosened, it can be moved away through the first slide rail 511 to install or remove the driving wheel 509;

[0055] The driving wheel 509 is arranged between the fixed bearing seat 508 and the movable bearing seat 510; the driving wheel 509 is made of cast iron, and different steel ropes 4 use different driving wheels 509. The groove pitch of the driving wheel 509 is uniformly 16 mm, and the number of grooves is 9. One end of the driving wheel 509 is a fixed bearing seat 508 and the other end is a movable bearing seat 510, which is convenient for replacing the driving wheel 509 and improving the experimental efficiency. The first groove of the driving wheel 509 is the reference groove, and the transmission wheels 3 and the angle wheels 801 with different groove numbers are aligned from 1 to 9.

[0056] The sprocket 506 is disposed at one end of the driving shaft 507 . The sprocket 506 is connected to the first motor module 501 through a chain. The first motor module 501 can drive the driving wheel 509 to rotate back and forth on the driving shaft 507 through the sprocket 506 .

[0057] Preferably, the first motor module 501 includes a first bracket 505 and a first drive motor 503 and a first reducer 502 fixed on the first bracket 505 .

[0058] Preferably, Figure 5 and 6As shown, the load loading device 6 includes:

[0059] A second motor module 601, the second motor module 601 includes a second drive motor and a second reducer;

[0060] A coupling 602, one end of the coupling 602 is connected to the second motor module 601 and the other end is connected to the first screw rod 603;

[0061] A first screw rod 603, one end of which is connected to the coupling 602 and the other end is connected to the fixed seat 7. The first screw rod 603 can drive the transmission wheel 3 on the fixed seat 7 to reciprocate up and down under the drive of the coupling 602, thereby loading and unloading the load of the transmission wheel 3;

[0062] The pressure sensor 604 is disposed between the first screw rod 603 and the fixing seat 7 and is connected to the control device 2 . The control device 2 can obtain the real-time load of the transmission wheel 3 through the pressure sensor 604 .

[0063] Preferably, Figure 6 As shown, the rope head assembly 401 includes:

[0064] A positive and negative thread nut 402, wherein the upper end of the positive and negative thread nut 402 is provided with a first negative thread screw, an upper heart ring and an upper snap ring, and the lower end thereof is provided with a first positive thread screw, a lower heart ring and a lower snap ring;

[0065] An upper center distance component 403, wherein the upper center distance component 403 is disposed above the upper heart ring;

[0066] The lower center distance component 404 is arranged below the lower chicken heart ring, and the lower center distance component 404 is connected to the fixing seat 7 through the distance clamping plate 405 , and the lower center distance component 404 is positioned through the distance clamping plate 405 .

[0067] Preferably, Figure 6 As shown, the distance clamping plate 405 can keep the starting center distance from the rope head assembly 401 to the transmission wheel 3 at 350mm≤L≤450mm.

[0068] Preferably, Figure 6 As shown, both the upper center distance component 403 and the lower center distance component 404 are provided with infrared travel switches connected to the control device 2, and the infrared travel switches can prevent the steel rope 4 from slipping and causing the rope head component 401 to rush through the experimental wheel.

[0069] Preferably, Figure 5As shown, the fixed seat 7 includes a first assembly bearing 701 and a second slide rail 702, the second slide rail 702 is provided with a first slider, the first slider is provided with a first fixed seat 703, a first pressure block and a first axial locking block for fixing the first assembly bearing 701, the transmission wheel 3 is installed on the second slide rail 702 through the first assembly bearing 701, the transmission wheel 3 is assembled with the shaft, bearing, and retaining spring, and then installed in the first fixed seat 703, and then locked and fixed by the first pressure block and the first axial locking block. The transmission wheels 3 with different numbers of grooves are all positioned at the left end, and the distance between the first groove at the left end and the first fixed seat 703 on the left is the same. Different transmission wheels 3 are equipped with different shafts, bearings, and retaining springs. The diameters of the two ends of the shafts of different transmission wheels 3 are the same, and different transmission wheels 3 share the first fixed seat 703.

[0070] The load loading device 6 can drive the transmission wheel 3 to reciprocate up and down in the second slide rail 702 .

[0071] Preferably, Figure 4 As shown, the angle adjustment seat 802 includes a second assembly bearing 803, a third slide rail 804, and a scale and a second screw 805 arranged on both sides of the third slide rail 804. The third slide rail 804 is provided with a second slider, and the second slider is provided with a second fixed seat 806, a second pressure block and a second axial locking block for fixing the second assembly bearing 803. The third slide rail 804 is provided with a blocking block 807 for preventing the displacement of the angle wheel 801 when the transmission wheel 3 is loaded with a load. The side of the second slider is provided with an indicator needle corresponding to the scale, and the angle of the steel rope 4 to the transmission wheel 3 can be read through the indicator needle and the scale. A handle 808 is provided at the upper end of the second screw 805. The shaft, bearing, retaining ring and installation and fixing method of the angle wheel 801 are the same as those of the transmission wheel 3. After the angle wheel 801 is assembled, the left and right handles 808 are rotated at the same time, and the angle wheel 801 is driven up and down by the screw rod to adjust the angle. The value of the scale indicated by the indicator needle is the angle value. The wrap angle adjustment range is 70°~110°.

[0072] Preferably, the control device 2 includes a display unit, a central control unit, a load setting unit, a speed setting unit, a running time setting unit and a number of laps setting unit, the load setting unit is connected to the load loading device 6, the speed setting unit, the running time setting unit and the number of laps setting unit are connected to the driving device 5, and the central control unit can collect the experimental data to generate tables and curves. At the same time, the control device 2 can perform abnormal alarms and can guide the experimental data to a U disk through the USB interface therein.

[0073] Compared with the existing technology, the present invention has the following advantages: the testing machine for testing the fatigue wear of the elevator drive wheel 3 can simulate the actual running state of the elevator, the steel rope 4 acts on the drive wheel 3, adjusts different wrap angles to apply a certain load, reciprocates at a certain speed and frequency, and observes the wear of the drive wheel 3 after the drive wheel 3 runs for a certain time and number of turns, thereby testing the performance index of the drive wheel 3. The load of the drive wheel 3 can be automatically loaded by the load loading device 6, and the wrap angle can be manually adjusted by the second screw rod 805, so as to realize the free setting and display of the load, speed, running time and number of turns of the testing machine. At the same time, the testing machine can automatically generate experimental data and curves, and the USB interface can be led to a U disk. The testing machine can be suitable for drive wheels 3 of different specifications, with a maximum speed of 3m / s; a maximum load of 5000KG; an angle adjustment range of 70-110°; a maximum stroke of 2100mm; and a maximum test wheel pitch diameter of 640mm. For existing elevator types, one machine can be used for multiple purposes, ensuring compatibility, convenience and standardization.

[0074] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. A testing machine for testing fatigue wear of elevator drive wheels, characterized in that: It includes a frame and a control device, wherein the frame is provided with: A transmission wheel, the transmission wheel is arranged in the frame through a fixed seat, and the transmission wheel is connected to the driving wheel module and the angle wheel through a steel rope; Steel ropes, the steel ropes are located between the transmission wheel and the driving wheel and are provided with rope head components capable of adjusting the tension of each steel rope individually; A driving device, the driving device comprising a first motor module and a driving wheel module, the motor module being electrically connected to the control device, the driving wheel module being connected to the transmission wheel via a steel rope, and the control device being able to control the motor module to drive the transmission wheel to rotate back and forth via the driving wheel module; A load loading device, the load loading device is connected to the fixing seat, and the load loading device drives the transmission wheel on the fixing seat to reciprocate up and down so as to load and unload the load of the transmission wheel; An angle adjustment device, the angle adjustment device comprises an angle wheel and an angle adjustment seat, the angle wheel can move up and down through the angle adjustment seat to adjust the angle of the steel rope to the transmission wheel; The driving wheel module comprises: A driving shaft, wherein a sprocket, a fixed bearing seat, a driving wheel and a movable bearing seat are arranged on the driving shaft, and the driving shaft is arranged in the frame through the fixed bearing seat and the movable bearing seat; A movable bearing seat, wherein the movable bearing seat is arranged on the first slide rail, and the movable bearing seat can be moved left and right through the first slide rail. When the movable bearing seat is loosened, it can be moved away through the first slide rail to install or remove the driving wheel; A driving wheel, the driving wheel being arranged between the fixed bearing seat and the movable bearing seat; A sprocket, the sprocket is arranged at one end of the driving shaft, the sprocket is connected to the first motor module through a chain, and the first motor module can drive the driving wheel to rotate back and forth on the driving shaft through the sprocket; The first motor module includes a first bracket and a first drive motor and a first reducer fixed on the first bracket; The load loading device comprises: A second motor module, the second motor module comprising a second drive motor and a second reducer; A coupling, one end of which is connected to the second motor module and the other end of which is connected to the first screw rod; A first screw rod, one end of which is connected to the coupling and the other end of which is connected to the fixed seat. The first screw rod can drive the transmission wheel on the fixed seat to reciprocate up and down under the drive of the coupling to load and unload the load of the transmission wheel; A pressure sensor is disposed between the first screw rod and the fixing seat and is connected to the control device. The control device can obtain the real-time load of the transmission wheel through the pressure sensor.

2. A testing machine for testing fatigue wear of elevator drive wheels according to claim 1, characterized in that: The rope head assembly comprises: A positive and negative thread nut, wherein the upper end of the positive and negative thread nut is provided with a first negative thread screw, an upper heart ring and an upper snap ring, and the lower end of the positive and negative thread nut is provided with a first positive thread screw, a lower heart ring and a lower snap ring; An upper center distance component, the upper center distance component is arranged above the upper chicken heart ring; The lower center distance component is arranged below the lower chicken heart ring. The lower center distance component is connected to the fixing seat through a distance fixing plate, and is positioned by the distance fixing plate; The distance clamping plate can keep the starting center distance from the rope head assembly to the transmission wheel at 350mm≤L≤450mm.

3. A testing machine for testing fatigue wear of elevator drive wheels according to claim 2, characterized in that: The upper center distance component and the lower center distance component are both provided with infrared travel switches connected to the control device, and the infrared travel switches can prevent the steel rope from slipping and causing the rope head component to rush through the test wheel.

4. A testing machine for testing fatigue wear of elevator drive wheels according to claim 1, characterized in that: The fixed seat includes a first assembly bearing and a second slide rail, the second slide rail is provided with a first slider, the first slider is provided with a first fixed seat, a first pressure block and a first axial locking block for fixing the first assembly bearing, the transmission wheel is installed on the second slide rail through the first assembly bearing, and the load loading device can drive the transmission wheel to reciprocate up and down in the second slide rail.

5. The testing machine for testing fatigue wear of elevator drive wheels according to claim 1, characterized in that: The wrap angle adjustment seat includes a second assembly bearing, a third slide rail, and a scale and a second screw rod arranged on both sides of the third slide rail. The third slide rail is provided with a second slider, and the second slider is provided with a second fixed seat, a second pressure block and a second axial locking block for fixing the second assembly bearing. The third slide rail is provided with a blocking block for preventing the displacement of the wrap angle wheel when the transmission wheel is loaded with a load. An indicator needle corresponding to the scale is provided on the side of the second slider, and the angle of the steel rope on the transmission wheel can be read by the indicator needle and the scale.

6. A testing machine for testing fatigue wear of elevator drive wheels according to claim 1, characterized in that: The control device includes a display unit, a central control unit, a load setting unit, a speed setting unit, a running time setting unit and a number of turns setting unit. The load setting unit is connected to the load loading device, and the speed setting unit, the running time setting unit and the number of turns setting unit are connected to the driving device. The central control unit can collect experimental data to generate tables and graphs.

Images