A conveyor belt fatigue testing apparatus and method

Abstract

The application discloses a kind of conveyor belt fatigue test equipment and method, including base, the base is equipped with machine cabinet, the machine cabinet is equipped with testing instrument, the machine cabinet upper wall is equipped with a plurality of collection through holes, the base is equipped with a plurality of winding collector in machine cabinet interior, the beneficial effects of the application are that a plurality of test conveyors can be installed on driving frame holder and driven frame holder, and two test conveyors of the same size are installed on the two sides of driving frame holder and driven frame holder active support assembly and driven test assembly, fixed tensioning regulator is used to tension the test conveyor on a group of active support assembly and driven test assembly, and movable tensioning regulator is used to tension the test conveyor on another group of active support assembly and driven test assembly, so that the same size test conveyor in two positions of tensioning wheel can be simultaneously subjected to fatigue test in one test, and the test efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of conveyor belt fatigue testing technology, and in particular to a conveyor belt fatigue testing device and method. Background Technology

[0002] As a crucial component of mechanical transmission, belts directly impact the operational efficiency and safety of the entire transmission system. Fatigue testing, by simulating prolonged high-intensity working environments, can determine whether belts will experience fatigue fracture or failure in actual use, which is vital for ensuring the normal operation of mechanical equipment. During belt operation, the relative position of the tensioner and the belt directly affects the belt's lifespan. The primary function of the tensioner is to maintain a certain tension on the belt during transmission, thereby improving its durability and service life. Improper installation of the tensioner can lead to accelerated belt wear, affecting its lifespan. Therefore, belt fatigue testing typically involves examining the belt with the tensioner in different positions. Existing technologies involved include:

[0003] 1. A tension testing mechanism for a belt testing machine, disclosed in CN219495962U, includes a base plate, a belt fixing structure, and a tension tester. The belt fixing structure is mounted on the upper end of the base plate, and a belt body is fixed to the outside of the belt fixing structure. A vertical support plate is fixedly mounted on the upper rear side of the base plate, and a tension tester is disposed at the front end of the vertical support plate. By setting up horizontal and vertical adjustment structures, the position of the tension testing mechanism can be easily adjusted. Due to different belt thicknesses, the vertical height adjustment of the tension tester can be used for different types of belts, while the horizontal position adjustment can be used to perform tension testing at different positions of the belt, which can improve the accuracy of test data. Furthermore, due to testing requirements, the belt may not be in a horizontal state. The angle can be adjusted simultaneously with the vertical height adjustment, which is not only convenient to use but also applicable to belt tension testing under different conditions.

[0004] 2. A belt testing device suitable for unmanned aerial vehicles (UAVs) with publication number CN116202767A belongs to the field of belt testing technology. It includes a test bench, a drive structure, a push rod, a transmission structure, and a load assembly. The drive structure includes a drive motor and a mounting base, with the mounting base slidably connected to the test bench and the drive motor mounted on the mounting base. The push rod is mounted on the test bench and can drive the mounting base to move up and down. The transmission structure includes a drive pulley, a driven pulley, and a belt. The drive motor drives and connects to the drive pulley, and the driven pulley is rotatably connected to the test bench. The belt is wound between the drive pulley and the driven pulley. The load assembly is driven and connected to the driven pulley. The load assembly may include a main load motor and a tail load motor, etc. The push rod can control the belt tension, thereby obtaining the fatigue time of the belt under different tensions.

[0005] The aforementioned comparative documents all have the following problems: the device can only install one belt, and the tensioning structure is only designed as one. Therefore, fatigue testing can only be performed on one tensioning position of one belt at a time. However, in actual work, it is necessary to move the tensioning wheel to different positions for testing under the condition of the same size belt, resulting in low work efficiency. Moreover, the device lacks the function of belt retraction. If the belt breaks during the test, the staff needs to manually collect the broken belt. Furthermore, the belt's deviation during operation cannot be visually detected, making it inconvenient to use. In view of this, in-depth research was conducted on the above problems, leading to this case. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems by designing a conveyor belt fatigue testing device and method. This addresses the limitations of existing conveyor belt fatigue testing devices, which can only install one belt and have only one tensioning structure. Therefore, fatigue testing can only be performed on one tensioning position of a single belt at a time. In practical work, it is necessary to move the tensioning wheel to different positions for testing under the same belt size conditions, resulting in low work efficiency. Furthermore, the device lacks a belt retraction function; if the belt breaks during testing, workers must manually collect the broken pieces. Additionally, the belt's offset during operation cannot be visually detected, making it inconvenient to use.

[0007] The technical solution of the present invention to achieve the above objectives is as follows: a conveyor belt fatigue testing device, including a base, a housing installed on the base, testing instruments installed on the housing, a plurality of collection through holes opened on the upper wall of the housing, and a plurality of retractors installed on the base and inside the housing, with each retractor corresponding to each collection through hole;

[0008] The testing apparatus includes a main end frame, which is installed at one end of the upper wall of the chassis. A drive frame holder is installed on the main end frame. A slave end frame is installed at the other end of the upper wall of the chassis. A driven frame holder is installed on the slave end frame. A fixed tension adjuster is installed at the center of the upper wall of the chassis. A movable tension adjuster is installed on the driven frame holder. Multiple test conveyor belts are movably mounted on the drive frame holder and the driven frame holder. Each test conveyor belt is movably fitted to the tension adjuster.

[0009] The driven frame holder includes a distance adjustment part, a rotation part, and a slippage detection part;

[0010] The distance adjustment unit includes a strip-shaped through hole, which is located in the middle of the end frame. An adjustment motor is installed on the inner wall of the strip-shaped through hole, and a lead screw is installed on the drive end of the adjustment motor. One end of the lead screw is movably inserted into the strip-shaped through hole. A slider is threaded onto the lead screw and is movably fitted against the inner wall of the strip-shaped through hole. A movable connecting frame is installed on the lower wall of the slider and is movably fitted against the upper wall of the machine housing. The movable tension adjuster is installed on the upper wall of the movable connecting frame.

[0011] The rotating part includes a mounting box, which is mounted on the upper wall of the slider. A support shaft is fixedly inserted into the mounting box. Two sets of driven test components are symmetrically mounted on the support shaft. Each set of driven test components consists of multiple test wheels. Each test wheel includes a driven end fixing sleeve, which is fitted onto the support shaft. A connecting plate is mounted on one end of the driven end fixing sleeve. A bearing is fitted onto the connecting plate. A driven pulley is fitted onto the bearing. A detection gear is mounted on the side wall of the driven pulley, coaxial with the support shaft.

[0012] The slippage detection unit includes a T-shaped frame, which is installed on the upper wall of the mounting box. Multiple Hall sensors are installed on the lower wall of the T-shaped frame, and the Hall sensors are installed vertically and vertically corresponding to the detection gear.

[0013] The drive frame holder includes a power assembly, which is mounted on the upper wall of the main end frame. An active rotating shaft is mounted on the power assembly, and two sets of active support assemblies are symmetrically mounted on the active rotating shaft. Each set of active support assemblies consists of multiple active wheels, and each active wheel includes an active end fixing sleeve, which is fitted onto the active rotating shaft. An active pulley is mounted on one end of the driven end fixing sleeve. A detection conveyor belt is fitted onto the active pulley and the driven pulley, and a collection through hole is correspondingly set with the detection conveyor belt.

[0014] The power assembly includes a drive box, which is mounted on the wall of the main end frame. A drive motor is mounted on the wall of the main end frame. A transmission shaft is mounted on the drive end of the drive motor. The transmission shaft is movably inserted into the drive box. A drive bevel gear is mounted on the transmission shaft. A driven bevel gear is mounted on the drive shaft. The driven bevel gear and the drive bevel gear mesh with each other.

[0015] Both the fixed and movable tension adjusters include a transverse lead screw module and an offset detection component. A longitudinal lead screw module is installed on the movable end of the transverse lead screw module, and a horizontal plate is installed on the movable end of the longitudinal lead screw module. Multiple pressure sensors are installed on the lower wall of the horizontal plate, and a wheel frame is installed on the lower wall of each pressure sensor. A tensioning wheel is rotatably installed on the wheel frame, and the detection conveyor belt is movably attached to the tensioning wheel. The tensioning wheel and the detection conveyor belt are installed correspondingly.

[0016] The offset detection component includes an L-shaped frame, on which multiple support plates are movably mounted. The support plates are located below the tensioning wheel, and a distance sensor is installed at one end of the side wall of each support plate. The distance sensor is installed correspondingly to the detection conveyor belt.

[0017] Each of the multiple retractors includes a hydraulic cylinder mounted on a base. A retracting motor is mounted on the telescopic end of the hydraulic cylinder, and a rotating hook is mounted on the drive end of the retracting motor. The rotating hook moves through the collection through hole and is installed correspondingly to the detection conveyor belt.

[0018] The support shaft is provided with a follower positioning protrusion, and the follower end fixing sleeve and connecting plate are matched with the follower positioning protrusion. The support shaft has multiple sets of follower end mounting through holes, which are corresponding to multiple test wheels. Each set of follower end mounting through holes includes four follower end mounting threaded holes. Four follower mounting bolts pass through the follower end fixing sleeve, and one end of each follower mounting bolt is threaded into the four follower end mounting threaded holes. The drive shaft is provided with a main positioning protrusion, and the drive end fixing sleeve is matched with the main positioning protrusion. The drive shaft has multiple sets of drive end mounting through holes, which are corresponding to multiple drive wheels. Each set of drive end mounting through holes includes four drive end mounting threaded holes. Four main mounting bolts pass through the drive end fixing sleeve, and one end of each main mounting bolt is threaded into the four drive end mounting threaded holes.

[0019] Each of the support plates has a locking bolt movably inserted into its lower wall surface, with one end of the locking bolt movably attached to the L-shaped frame.

[0020] A method for fatigue testing of conveyor belts includes the following steps;

[0021] Step 1: Select multiple test conveyor belts, including multiple sets of two test conveyor belts of the same size;

[0022] Step 2: Install the test wheel that matches the test conveyor belt on the support shaft, and install the drive wheel that matches the test conveyor belt on the rotating shaft corresponding to the test wheel. The test conveyor belt is installed on the test wheel and the drive wheel.

[0023] Step 3: Control the adjustment motor to make the slider move the moving connecting frame, and adjust the distance between the drive wheel and the test wheel;

[0024] Step 4: Control the operation of the horizontal lead screw module in the fixed tension adjuster, adjust the distance between the tension wheel and the drive shaft, control the operation of the longitudinal lead screw module, and adjust the longitudinal height of the tension wheel. At this time, the pressure sensor detects the pressure value.

[0025] Step 5: Control the transverse screw module in the movable tension adjuster to work, adjust the distance between the tension wheel and the support shaft, control the longitudinal screw module to work, and adjust the longitudinal height of the tension wheel. At this time, the pressure sensor detects the pressure value.

[0026] Step 6: Move the support plate laterally so that it is located on one side of the test conveyor belt;

[0027] Step 7: Control the hydraulic cylinder to work and adjust the hook to be close to the test conveyor belt, but not in contact with it;

[0028] Step 8: The power unit operates, the driving pulley, the test pulley and the driven pulley run, the slippage detection unit detects slippage of the test pulley, and the offset detection unit detects offset of the test pulley.

[0029] Step 9: When the pressure sensor cannot detect a pressure value, it indicates that the test conveyor belt is broken. The corresponding retractor will work, the hydraulic cylinder will retract, and the hook will lower. The hook will catch the broken test conveyor belt. At the same time, the retractor motor will work, driving the hook to rotate. The hook will pull the broken test conveyor belt into the machine box through the collection hole to prevent it from affecting the operation of other test conveyor belts.

[0030] The conveyor belt fatigue testing equipment and method made using the technical solution of the present invention have the following beneficial effects:

[0031] Multiple test conveyor belts can be installed on the drive and driven frame holders. Two test conveyor belts of the same size are installed on the active support components and driven test components on both sides of the drive and driven frame holders. A fixed tension adjuster is used to tension the test conveyor belts on one set of active support components and driven test components, while a movable tension adjuster is used to tension the test conveyor belts on another set of active support components and driven test components. Therefore, fatigue testing can be performed simultaneously on test conveyor belts of the same size with the tensioning wheel in two different positions during a single test, improving testing efficiency. An offset component can be adjusted to adapt to test conveyor belts of different widths. During the operation of the test conveyor belt, the offset state of the test conveyor belt is determined by detecting the distance between the offset component and the test conveyor belt. A retractor can collect broken test conveyor belts in the chassis to prevent them from affecting the testing of other test conveyor belts, making it convenient to use. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the conveyor belt fatigue testing device described in this invention.

[0033] Figure 2 This is a three-dimensional structural diagram of the internal structure of the conveyor belt fatigue testing equipment described in this invention, viewed from below.

[0034] Figure 3 This is a top-view three-dimensional structural diagram of the testing instrument of the conveyor belt fatigue testing device described in this invention.

[0035] Figure 4 This is a top-view three-dimensional structural diagram of the retractor of the conveyor belt fatigue testing device according to the present invention.

[0036] Figure 5 This is a top sectional view of the conveyor belt fatigue testing device described in this invention.

[0037] Figure 6 This is a side cross-sectional view of the driven support portion of the conveyor belt fatigue testing device according to the present invention.

[0038] Figure 7 This is a partial side cross-sectional view of the drive frame holder of the conveyor belt fatigue testing device according to the present invention.

[0039] Figure 8 The present invention provides a conveyor belt fatigue testing device. Figure 1 Enlarged view of a portion of point A in the middle.

[0040] Figure 9 The present invention provides a conveyor belt fatigue testing device. Figure 1 Enlarged view of section B in the middle.

[0041] Figure 10 The present invention provides a conveyor belt fatigue testing device. Figure 1 Enlarged view of a section at point C.

[0042] Figure 11 The present invention provides a conveyor belt fatigue testing device. Figure 2 Enlarged view of a section at point D.

[0043] In the diagram: 1. Base, 2. Chassis, 3. Collection through hole, 4. Main end stand, 5. Slave end stand, 6. Test conveyor belt, 7. Strip through hole, 8. Adjustment motor, 9. Lead screw, 10. Slider, 11. Moving connecting frame, 12. Mounting box, 13. Support shaft, 14. Slave end fixing sleeve, 15. Connecting plate, 16. Bearing, 17. Slave pulley, 18. Detection gear, 19. T-shaped frame, 20. Hall sensor, 21. Active rotating shaft, 22. Active end fixing sleeve, 23. Active pulley, 24. 25. Drive box, 26. Drive motor, 27. Drive shaft, 28. Drive bevel gear, 29. Driven bevel gear, 30. Transverse lead screw module, 31. Longitudinal lead screw module, 32. Horizontal plate, 33. Pressure sensor, 34. Wheel frame, 35. Tensioning wheel, 36. L-shaped frame, 37. Support plate, 38. Distance sensor, 39. Hydraulic cylinder, 40. Rewind motor, 41. Hook, 42. Driven positioning ridge, 43. Driven mounting bolt, 44. Main positioning ridge, 45. Main mounting bolt, 46. Locking bolt. Detailed Implementation

[0044] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-11 As shown, a fatigue testing device and method for a conveyor belt are disclosed.

[0045] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without explaining the electrical control.

[0046] Example 1:

[0047] A conveyor belt fatigue testing device includes a base 1, a housing 2 mounted on the base 1, characterized in that testing instruments are mounted on the housing 2, a plurality of collection through holes 3 are opened on the upper wall of the housing 2, and a plurality of retractors are mounted on the base 1 and inside the housing 2, with each retractor corresponding to each collection through hole 3.

[0048] It should be noted that the base 1 is set at the target position, and the chassis 2 is used to install the testing equipment. The testing equipment can perform fatigue tests on multiple test conveyor belts 6 at the same time. If a break occurs during the test, the broken test conveyor belt 6 is collected by a retractor to avoid affecting the normal test operation of other test conveyor belts 6.

[0049] Specifically, the testing equipment includes a main end frame 4, which is installed at one end of the upper wall of the chassis 2. A drive frame holder is installed on the main end frame 4. A slave end frame 5 is installed at the other end of the upper wall of the chassis 2. A driven frame holder is installed on the slave end frame 5. A fixed tension adjuster is installed at the center of the upper wall of the chassis 2. A movable tension adjuster is installed on the driven frame holder. Multiple test conveyor belts 6 are movably mounted on the drive frame holder and the driven frame holder. Each test conveyor belt 6 is movably attached to the tension adjuster.

[0050] It should be noted that the position of the driving pulley 23 in the drive frame holder is fixed, while the position of the driven pulley 17 in the driven frame holder can be adjusted to match test conveyor belts 6 of different sizes. The fixed tension adjuster is used to tension multiple test conveyor belts 6 on one side, and the fixed tension adjuster is close to the driving pulley 23. During the movement of the driven frame holder, the movable tension adjuster can move with the driven frame holder, so that the movable tension adjuster is close to the driven pulley 17.

[0051] More specifically, the driven holder includes a distance adjustment unit, a rotation unit, and a slippage detection unit;

[0052] More specifically, the distance adjustment unit includes a strip-shaped through hole 7, which is located in the middle of the end frame 5. An adjustment motor 8 is installed on the inner wall of the strip-shaped through hole 7. A lead screw 9 is installed on the drive end of the adjustment motor 8. One end of the lead screw 9 is movably inserted into the strip-shaped through hole 7. A slider 10 is threaded onto the lead screw 9. The slider 10 is movably attached to the inner wall of the strip-shaped through hole 7. A movable connecting frame 11 is installed on the lower wall of the slider 10. The lower wall of the movable connecting frame 11 is movably attached to the upper wall of the housing 2. A movable tension adjuster is installed on the upper wall of the movable connecting frame 11.

[0053] It should be noted that by adjusting the operation of the motor 8, the motor 8 drives the lead screw 9 to rotate. Under the restriction of the slider 10 by the strip-shaped through hole 7, the slider 10 drives the movable connecting frame 11 to move, thereby realizing the overall position adjustment of the rotating part, the slip detection part and the movable tension adjuster.

[0054] More specifically, the rotating part includes a mounting box 12, which is mounted on the upper wall of the slider 10. A support shaft 13 is fixedly inserted into the mounting box 12. Two sets of driven test components are symmetrically mounted on the support shaft 13. Each set of driven test components consists of multiple test wheels. Each test wheel includes a driven end fixing sleeve 14, which is fitted onto the support shaft 13. A connecting plate 15 is installed at one end of the driven end fixing sleeve 14. A bearing 16 is fitted onto the connecting plate 15. A driven pulley 17 is fitted onto the bearing 16. A detection gear 18 is installed on the side wall of the driven pulley 17, which is coaxial with the support shaft 13.

[0055] It should be noted that the size of the driven pulley 17 of each test wheel in one set of driven test components can be the same or different, as long as it matches the test conveyor belt 6. In another set of driven test components, each test wheel is the same, but the size of the driven end fixing sleeve 14 of each test wheel is the same, which matches the support shaft 13. During the test, the test conveyor belt 6 works, driving the driven pulley 17 to rotate through the bearing 16, and the detection gear 18 rotates with the driven pulley 17.

[0056] More specifically, the slip detection unit includes a T-shaped frame 19, which is mounted on the upper wall of the mounting box 12. Multiple Hall sensors 20 are mounted on the lower wall of the T-shaped frame 19, and the Hall sensors 20 are mounted vertically and vertically in correspondence with the detection gear 18.

[0057] It should be noted that the T-shaped frame 19 is used to install multiple Hall sensors 20. The multiple Hall sensors 20 are used to detect the rotation speed of the corresponding detection gear 18 in order to determine whether the corresponding test conveyor belt 6 is slipping.

[0058] Specifically, the drive frame holder includes a power assembly, which is installed on the upper wall of the main end frame 4. An active rotating shaft 21 is installed on the power assembly, and two sets of active support assemblies are symmetrically installed on the active rotating shaft 21. Each set of active support assemblies consists of multiple active wheels, and each active wheel includes an active end fixing sleeve 22. The active end fixing sleeve 22 is fitted onto the active rotating shaft 21. An active pulley 23 is installed at one end of the driven end fixing sleeve 14. The detection conveyor belt is fitted onto the active pulley 23 and the driven pulley 17. The collection through hole 3 is set correspondingly to the detection conveyor belt.

[0059] It should be noted that the size of the drive pulley 23 of each drive wheel in one set of active support components can be the same or different, as long as it matches the test conveyor belt 6. In another set of active support components, each drive wheel is the same, but the size of the drive end fixing sleeve 22 of each drive wheel is the same, which matches the drive shaft 21. During the test, the power component works, driving the drive shaft 21 to rotate, and multiple drive pulleys 23 rotate simultaneously. With the support of the driven pulley 17, the test conveyor runs.

[0060] More specifically, the power assembly includes a drive housing 24, which is mounted on the upper wall of the main end frame 4. A drive motor 25 is mounted on the upper wall of the main end frame 4. A drive shaft 26 is mounted on the drive end of the drive motor 25. The drive shaft 26 is movably inserted into the drive housing 24. A drive bevel gear 27 is mounted on the drive shaft 26. A driven bevel gear 28 is mounted on the drive shaft 21. The driven bevel gear 28 and the drive bevel gear 27 mesh with each other.

[0061] It should be noted that when the drive motor 25 is working, it drives the transmission shaft 26 to rotate, and the drive bevel gear 27 rotates as a result. With the driven bevel gear 28 meshing with the drive bevel gear 27, the driven bevel gear 28 drives the drive shaft 21 to rotate.

[0062] Specifically, both the fixed tension adjuster and the movable tension adjuster include a transverse lead screw module 29 and an offset detection component. A longitudinal lead screw module 30 is installed on the movable end of the transverse lead screw module 29, and a horizontal plate 31 is installed on the movable end of the longitudinal lead screw module 30. Multiple pressure sensors 32 are installed on the lower wall of the horizontal plate 31, and a wheel frame 33 is installed on the lower wall of each pressure sensor 32. A tensioning wheel 34 is rotatably installed on the wheel frame 33. The detection conveyor belt is movably attached to the tensioning wheel 34, and the tensioning wheel 34 is installed correspondingly to the detection conveyor belt.

[0063] It should be noted that the fixed tension adjuster is used to tension the test conveyor belt 6 on a set of active support components and driven test components. It adjusts the distance between the tension wheel 34 and the active rotating shaft 21 by controlling the operation of the transverse lead screw module 29, and adjusts the longitudinal height of the tension wheel 34 by controlling the operation of the longitudinal lead screw module 30, thereby adjusting the tension state of the test conveyor belt 6. The movable tension adjuster is used to tension the test conveyor belt 6 on another set of active support components and driven test components. It adjusts the tension by controlling the transverse lead screw... When module 29 is working, it adjusts the distance between tension wheel 34 and support shaft 13. By controlling the longitudinal screw module 30 to work, it adjusts the longitudinal height of tension wheel 34, thereby adjusting the tension state of test conveyor belt 6. Therefore, in one test, fatigue tests can be performed on test conveyor belt 6 of the same size with tension wheel 34 in two different positions, improving test efficiency. When tension wheel 34 presses down on test conveyor belt 6, pressure sensor 32 can detect the pressure value. During the operation of test conveyor belt 6, tension wheel 34 rotates on wheel frame 33.

[0064] More specifically, the offset detection component includes an L-shaped frame 35, on which multiple support plates 36 are movably mounted. The support plates 36 are located below the tensioning wheel 34. A distance sensor 37 is installed on one end of the side wall of each support plate 36, and the distance sensor 37 is installed corresponding to the detection conveyor belt.

[0065] It should be noted that after the test conveyor belt 6 is installed, the support plate 36 is moved laterally so that the support plate 36 is located on one side of the test conveyor belt 6. The distance sensor 37 can detect the distance value to one side of the test conveyor belt 6. If the distance value detected by the distance sensor 37 changes during the operation of the test conveyor belt 6, it means that the corresponding test conveyor belt 6 has shifted.

[0066] Specifically, each of the multiple retractors includes a hydraulic cylinder 38, which is mounted on the base 1. A retracting motor 39 is mounted on the telescopic end of the hydraulic cylinder 38, and a rotating hook 40 is mounted on the drive end of the retracting motor 39. The rotating hook 40 moves through the collection through hole 3, and the rotating hook 40 is installed in correspondence with the detection conveyor belt.

[0067] It should be noted that when installing the test conveyor belt 6, the hook 40 is in a vertical position. After the test conveyor belt 6 is installed, the hydraulic cylinder 38 is controlled to work and adjust the hook 40 to be close to the test conveyor belt 6, but not in contact with it. One pressure sensor 32 corresponds to one retractor. When the pressure sensor 32 cannot detect a pressure value, it means that the test conveyor belt 6 is broken. At this time, the corresponding retractor works, the hydraulic cylinder 38 retracts, and the hook 40 is lowered. The hook 40 hooks the broken test conveyor belt 6. At the same time, the retractor motor 39 works and drives the hook 40 to rotate. The hook 40 pulls the broken test conveyor belt 6 into the housing 2 through the collection hole 3 to prevent it from affecting the operation of the other test conveyor belts 6.

[0068] As a preferred and further option, the support shaft 13 is provided with a follower positioning protrusion 41, the follower end fixing sleeve 14 and the connecting plate 15 are matched with the follower positioning protrusion 41, the support shaft 13 is provided with multiple sets of follower end mounting through holes, the multiple sets of follower end mounting through holes are provided in correspondence with multiple test wheels, each set of follower end mounting through holes includes four follower end mounting threaded holes, the follower end fixing sleeve 14 is provided with four follower mounting bolts 42, one end of the four follower mounting bolts 42 is threaded into the four follower end mounting threaded holes;

[0069] It should be noted that the positioning protrusion 41 is used to make the angle of the driven end mounting through hole correspond to that of the driven end mounting threaded hole. When installing the test wheel, the driven end mounting through hole and the driven end mounting threaded hole are aligned by moving the test wheel laterally, and the two are fixedly connected by inserting the mounting bolt 42.

[0070] As a preferred and further option, the active shaft 21 is provided with a main positioning protrusion 43, the active end fixing sleeve 22 matches the main positioning protrusion 43, the active shaft 21 is provided with multiple sets of active end mounting through holes, the multiple sets of active end mounting through holes are provided with multiple active wheels, each set of active end mounting through holes includes four active end mounting threaded holes, the active end fixing sleeve 22 is provided with four main mounting bolts 44, one end of the four main mounting bolts 44 is threaded into the four active end mounting threaded holes;

[0071] It should be noted that the main positioning protrusion 43 is set to make the angle of the active end mounting through hole correspond to that of the active end mounting threaded hole. When installing the test wheel, the active wheel is moved laterally to make the position of the active end mounting through hole correspond to that of the active end mounting threaded hole, and the two are fixedly connected by inserting the main mounting bolt 44.

[0072] As a preferred and further option, locking bolts 45 are movably inserted into the lower wall of multiple support plates 36, with one end of the locking bolt 45 movably attached to the L-shaped frame 35, and the positions of the support plates 36 and the L-shaped frame 35 are fixed by tightening the locking bolts 45.

[0073] Example 2:

[0074] A method for fatigue testing of conveyor belts includes the following steps;

[0075] Step 1: Select multiple test conveyor belts 6, including multiple sets of two test conveyor belts 6 of the same size;

[0076] Step 2: Install the test wheel that matches the test conveyor belt 6 on the support shaft 13, and install the drive wheel that matches the test conveyor belt 6 on the rotating shaft corresponding to the test wheel. The test conveyor belt 6 is installed on the test wheel and the drive wheel.

[0077] Step 3: Control the operation of the adjustment motor 8 to make the slider 10 drive the moving connecting frame 11 to move, and adjust the distance between the driving wheel and the test wheel;

[0078] Step 4: Control the operation of the transverse lead screw module 29 in the fixed tension adjuster, adjust the distance between the tension wheel 34 and the active rotating shaft 21, control the operation of the longitudinal lead screw module 30, and adjust the longitudinal height of the tension wheel 34. At this time, the pressure sensor 32 detects the pressure value.

[0079] Step 5: Control the transverse lead screw module 29 in the movable tension adjuster to work, adjust the distance between the tension wheel 34 and the support shaft 13, control the longitudinal lead screw module 30 to work, and adjust the longitudinal height of the tension wheel 34. At this time, the pressure sensor 32 detects the pressure value.

[0080] Step 6: Move the support plate 36 laterally so that the support plate 36 is located on one side of the test conveyor belt 6;

[0081] Step 7: Control the hydraulic cylinder 38 to work and adjust the rotating hook 40 to be close to the test conveyor belt 6, but not in contact with the test conveyor belt 6;

[0082] Step 8: The power unit operates, the driving pulley 23, the test pulley and the driven pulley 17 run, the slippage detection unit detects slippage of the test pulley, and the offset detection unit detects offset of the test pulley.

[0083] Step 9: When the pressure sensor 32 does not detect a pressure value, it means that the test conveyor belt 6 is broken. The corresponding retractor works, the hydraulic cylinder 38 retracts, and the rotating hook 40 lowers. The rotating hook 40 hooks the broken test conveyor belt 6. At the same time, the retracting motor 39 works, driving the rotating hook 40 to rotate. The rotating hook 40 pulls the broken test conveyor belt 6 into the housing 2 through the collection through hole 3 to prevent it from affecting the operation of the other test conveyor belts 6.

[0084] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A conveyor belt fatigue testing device, comprising a base (1), wherein a housing (2) is mounted on the base (1), characterized in that, The test equipment is installed on the chassis (2), and multiple collection through holes (3) are opened on the upper wall of the chassis (2). Multiple retractors are installed on the base (1) and inside the chassis (2), and each retractor is installed corresponding to each collection through hole (3). The testing equipment includes a main end frame (4), which is installed at one end of the upper wall of the chassis (2). A drive frame holder is installed on the main end frame (4). A slave end frame (5) is installed at the other end of the upper wall of the chassis (2). A driven frame holder is installed on the slave end frame (5). A fixed tension adjuster is installed at the center of the upper wall of the chassis (2). A movable tension adjuster is installed on the driven frame holder. Multiple test conveyor belts (6) are movably mounted on the drive frame holder and the driven frame holder. Each test conveyor belt (6) is movably attached to the tension adjuster. The driven frame holder includes a distance adjustment part, a rotation part, and a slippage detection part; The distance adjustment unit includes a strip-shaped through hole (7), which is located in the middle of the end frame (5). An adjustment motor (8) is installed on the inner wall of the strip-shaped through hole (7). A lead screw (9) is installed on the drive end of the adjustment motor (8). One end of the lead screw (9) is movably inserted into the strip-shaped through hole (7). A slider (10) is threaded onto the lead screw (9). The slider (10) is movably attached to the inner wall of the strip-shaped through hole (7). A movable connecting frame (11) is installed on the lower wall of the slider (10). The lower wall of the movable connecting frame (11) is movably attached to the upper wall of the chassis (2). The movable tension adjuster is installed on the upper wall of the movable connecting frame (11). The rotating part includes a mounting box (12), which is mounted on the upper wall of the slider (10). A support shaft (13) is fixedly inserted into the mounting box (12). Two sets of driven test components are symmetrically mounted on the support shaft (13). Each set of driven test components consists of multiple test wheels. Each test wheel includes a driven end fixing sleeve (14), which is fitted onto the support shaft (13). A connecting plate (15) is installed at one end of the driven end fixing sleeve (14). A bearing (16) is fitted onto the connecting plate (15). A driven pulley (17) is fitted onto the bearing (16). A detection gear (18) is installed on the side wall of the driven pulley (17) coaxially with the support shaft (13).

2. The conveyor belt fatigue testing device according to claim 1, characterized in that, The slip detection unit includes a T-shaped frame (19), which is installed on the upper wall of the mounting box (12). Multiple Hall sensors (20) are installed on the lower wall of the T-shaped frame (19), and the Hall sensors (20) are installed vertically and vertically corresponding to the detection gear (18).

3. The conveyor belt fatigue testing device according to claim 1, characterized in that, The drive frame holder includes a power component, which is installed on the upper wall of the main end frame (4). An active rotating shaft (21) is installed on the power component. Two sets of active support components are symmetrically installed on the active rotating shaft (21). Each set of active support components consists of multiple active wheels. Each active wheel includes an active end fixing sleeve (22). The active end fixing sleeve (22) is fitted onto the active rotating shaft (21). An active pulley (23) is installed at one end of the driven end fixing sleeve (14). The detection conveyor belt is fitted onto the active pulley (23) and the driven pulley (17). The collection through hole (3) is correspondingly set with the detection conveyor belt.

4. The conveyor belt fatigue testing device according to claim 3, characterized in that, The power assembly includes a drive box (24), which is mounted on the upper wall of the main end frame (4). A drive motor (25) is mounted on the upper wall of the main end frame (4). A drive shaft (26) is mounted on the drive end of the drive motor (25). The drive shaft (26) is movably inserted into the drive box (24). A drive bevel gear (27) is mounted on the drive shaft (26). A driven bevel gear (28) is mounted on the drive shaft (21). The driven bevel gear (28) meshes with the drive bevel gear (27).

5. The conveyor belt fatigue testing device according to claim 1, characterized in that, Both the fixed tension adjuster and the movable tension adjuster include a transverse lead screw module (29) and an offset detection component. A longitudinal lead screw module (30) is installed on the movable end of the transverse lead screw module (29), and a horizontal plate (31) is installed on the movable end of the longitudinal lead screw module (30). Multiple pressure sensors (32) are installed on the lower wall of the horizontal plate (31), and a wheel frame (33) is installed on the lower wall of each pressure sensor (32). A tensioning wheel (34) is rotatably installed on the wheel frame (33), and the detection conveyor belt is movably attached to the tensioning wheel (34). The tensioning wheel (34) is installed correspondingly to the detection conveyor belt.

6. The conveyor belt fatigue testing device according to claim 5, characterized in that, The offset detection component includes an L-shaped frame (35), on which multiple support plates (36) are movably mounted. The support plates (36) are located below the tensioning wheel (34). A distance sensor (37) is installed on one end of the side wall of each support plate (36), and the distance sensor (37) is installed corresponding to the detection conveyor belt.

7. The conveyor belt fatigue testing device according to claim 1, characterized in that, Each of the multiple retractors includes a hydraulic cylinder (38), which is mounted on a base (1). A retractor motor (39) is mounted on the telescopic end of the hydraulic cylinder (38), and a hook (40) is mounted on the drive end of the retractor motor (39). The hook (40) moves through the collection through hole (3) and is installed correspondingly to the detection conveyor belt.

8. The conveyor belt fatigue testing device according to claim 3, characterized in that, The support shaft (13) is provided with a follower positioning protrusion (41). The follower end fixing sleeve (14) and the connecting plate (15) are matched with the follower positioning protrusion (41). The support shaft (13) is provided with multiple sets of follower end mounting through holes, which are provided in correspondence with multiple test wheels. Each set of follower end mounting through holes includes four follower end mounting threaded holes. Four follower mounting bolts (42) are passed through the follower end fixing sleeve (14). One end of the four follower mounting bolts (42) is threaded into the four follower end mounting bolts. On the textured surface, the active shaft (21) is provided with a main positioning protrusion (43), the active end fixing sleeve (22) matches the main positioning protrusion (43), the active shaft (21) is provided with multiple sets of active end mounting through holes, the multiple sets of active end mounting through holes are provided with multiple active wheels corresponding to each other, each set of active end mounting through holes includes four active end mounting threaded holes, the active end fixing sleeve (22) is provided with four main mounting bolts (44), one end of the four main mounting bolts (44) is threaded into the four active end mounting threaded holes.

9. A conveyor belt fatigue testing device according to claim 6, characterized in that, Each of the support plates (36) has a locking bolt (45) movably inserted into its lower wall surface, with one end of the locking bolt (45) movably attached to the L-shaped frame (35).

10. A method for testing conveyor belt fatigue, applied to the conveyor belt fatigue testing equipment according to any one of claims 1-9, characterized in that, The following steps are included; Step 1: Select multiple test conveyor belts (6), including multiple sets of two test conveyor belts (6) of the same size; Step 2: Install the test wheel that matches the test conveyor belt (6) on the support shaft (13), and install the drive wheel that matches the test conveyor belt (6) and the test wheel on the rotating shaft. The test conveyor belt (6) is installed on the test wheel and the drive wheel. Step 3: Control the operation of the adjustment motor (8) to make the slider (10) drive the moving connecting frame (11) to move, and adjust the distance between the driving wheel and the test wheel; Step 4: Control the operation of the transverse lead screw module (29) in the fixed tension adjuster, adjust the distance between the tension wheel (34) and the active rotating shaft (21), control the operation of the longitudinal lead screw module (30), adjust the longitudinal height of the tension wheel (34), and at this time the pressure sensor (32) detects the pressure value; Step 5: Control the operation of the transverse screw module (29) in the movable tension adjuster, adjust the distance between the tension wheel (34) and the support shaft (13), control the operation of the longitudinal screw module (30), adjust the longitudinal height of the tension wheel (34), and at this time the pressure sensor (32) detects the pressure value; Step 6: Move the support plate (36) laterally so that the support plate (36) is located on one side of the test conveyor belt (6); Step 7: Control the hydraulic cylinder (38) to work and adjust the rotating hook (40) to be close to the test conveyor belt (6), but not in contact with the test conveyor belt (6); Step 8: The power unit is working, the driving pulley (23), the test pulley and the driven pulley (17) are running, the slippage detection unit detects slippage of the test pulley, and the offset detection unit detects offset of the test pulley. Step 9: When the pressure sensor (32) cannot detect the pressure value, it means that the test conveyor belt (6) is broken. The corresponding retractor works, the hydraulic cylinder (38) retracts, and the hook (40) goes down. The hook (40) hooks the broken test conveyor belt (6). At the same time, the retractor motor (39) works, driving the hook (40) to rotate. The hook (40) pulls the broken test conveyor belt (6) into the machine box (2) through the collection through hole (3) to prevent it from affecting the operation of the other test conveyor belts (6).

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