A coupling forward and reverse rotation testing device and method

Abstract

The present disclosure relates to the technical field of coupling durability test, and discloses a coupling forward and reverse rotation test device and method. The device comprises a test base, a control cabinet, a test assembly and an adjusting assembly; the test assembly comprises a test motor, a speed reducer, a torque sensor and oppositely arranged first and second connecting flanges, and the coupling to be tested is installed between the two connecting flanges; the adjusting assembly is used for adjusting the position of the test table. The control cabinet controls the test motor to drive the coupling to periodically switch between forward rotation and reverse rotation according to a preset angle, so that the coupling bears alternating torque impact load; the torque shaft of the torque sensor serves as a fixed constraint end to bear the reaction torque of the coupling to be tested, and the torque sensor is used for detecting the torsional deformation of the torque shaft to obtain torque data. The device can truly simulate the forward and reverse rotation alternating operation condition of the coupling, and improve the accuracy and reliability of the commutation durability performance test.

Description

Technical Field

[0001] This disclosure relates to the field of coupling durability testing technology, and more specifically, to a coupling forward and reverse rotation testing device and method. Background Technology

[0002] A coupling is a mechanical transmission component used to connect a driving shaft and a driven shaft and transmit torque and motion. It is widely used in automation equipment, machine tools, packaging equipment, robots, conveying equipment, and new energy equipment. In actual operation, in addition to transmitting torque, couplings must withstand complex conditions such as starting, braking, frequent reversing, and impact loads. Therefore, their durability directly affects the operational stability and service life of the entire equipment.

[0003] In existing technologies, dynamometers, torque test benches, or load test platforms are typically used to test couplings to verify their performance parameters. Existing testing equipment generally includes a drive motor, a torque sensor, and a load simulation device. The drive motor rotates the coupling, and resistance is applied using load devices such as magnetic powder brakes, magnetic powder clutches, and eddy current brakes to test the coupling's transmission efficiency, load-bearing capacity, and torque performance. Most existing coupling testing equipment is designed for continuous rotation in one direction. The testing mode typically involves the motor continuously rotating in the same direction, and the coupling performance is tested by adjusting the speed and load.

[0004] However, in practical industrial applications, many equipment transmission systems require frequent forward and reverse rotation switching, such as automated production lines, robotic arms, lifting mechanisms, packaging equipment, and servo drive systems. During these frequent forward and reverse switching, couplings not only endure periodic torque changes but also repeated commutation impact loads, leading to elastomer fatigue, wear of connecting components, increased clearances, and even structural failure. Existing testing equipment struggles to simulate the actual operating conditions of couplings under high-frequency forward and reverse rotation, making it impossible to effectively evaluate the commutation durability, fatigue life, and long-term stability of couplings.

[0005] Therefore, how to provide a coupling forward and reverse rotation testing device and method to simulate the actual working state of the coupling under alternating forward and reverse rotation conditions, and to accurately test the durability and service life of the coupling, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this disclosure is to provide a device and method for testing the forward and reverse rotation of couplings, which solves the problems mentioned in the background art.

[0007] According to the first aspect, this disclosure provides a coupling forward and reverse rotation testing device, including a test base and a control cabinet, wherein the test base is provided with a test component and an adjustment component; The test assembly includes a torque sensor and a test bench. A speed reducer and a test motor are mounted on the test bench. The torque sensor is provided with a first connecting flange. A second connecting flange, which is arranged opposite to the first connecting flange, is fixedly sleeved on the drive shaft of the speed reducer. One end of the coupling under test is connected to the first connecting flange, and the other end of the coupling under test is connected to the second connecting flange. The adjustment component is used to adjust the position of the test bench on the test base, so that the second connecting flange is closer to or farther from the first connecting flange; the control cabinet is used to control the test motor to drive the coupling under test to perform a periodic forward and reverse rotation durability test at a preset angle; The torque shaft of the torque sensor serves as a rigid constraint end fixedly mounted on the test base, used to provide a reaction torque during the reversal process of the coupling under test. The torque sensor is used to measure the torsional deformation of the torque shaft in real time during the forward and reverse reversal process of the coupling under test.

[0008] With the above structural setup, the torque sensor itself does not provide rigid constraint torque; its reverse constraint torque is provided by the rigid support structure of the test base. The torque sensor is used to detect the elastic deformation of the torque shaft under stress.

[0009] Optionally, the torque sensor includes a sensor body and a torque shaft passing through the sensor body. The end of the torque shaft away from the first connecting flange is fastened to the test base, and the end of the torque shaft near the first connecting flange is fixedly connected to the first connecting flange.

[0010] Optionally, it also includes three locking elements, the first and second locking elements being connected to the first connecting flange respectively, and the third locking element being connected to the second connecting flange; The first and second locking members have the same structure, and the inner diameter of the third locking member is larger than the inner diameter of the first and second locking members.

[0011] Optionally, each of the locking elements includes a locking seat, the locking seat being sleeved with a locking ring; Two of the locking seats are sleeved on both ends of the torque shaft and press against the test base and the first connecting flange; the other locking seat is sleeved on the drive shaft and press against the second connecting flange; the first locking ring abuts against the test base, the second locking ring abuts against the first connecting flange, and the third locking ring abuts against the second connecting flange. When the locking seat and the locking ring are fastened together by multiple locking screws, axial clamping force and radial clamping force are generated simultaneously to keep the axial preload of the tested coupling constant during the process of the torque sensor providing reverse torque constraint.

[0012] Optionally, the locking ring is an open ring, and the locking seat has a plurality of locking pieces arranged at intervals along its circumference. The outer wall of the locking piece is provided with a first locking slope, and the inner wall of the locking ring is provided with a second locking slope that is arranged in a ring and connected to the first locking slope.

[0013] Optionally, the test bench is slidably connected to the test base, and the adjustment assembly includes an adjustment seat and an adjustment screw fixedly connected to the test base. The adjustment screw passes through the adjustment seat and the test bench in sequence, and an adjustment plate is fixedly installed at the end of the adjustment screw away from the test bench. A limiter for limiting the adjusted test bench is installed at the bottom of the test bench.

[0014] Optionally, a guide rail is fixedly installed on the test base, and a plurality of sliders fixedly connected to the test platform are slidably connected on the guide rail, with the limiter located between two of the sliders; The limiter includes a limit seat, on which a limit handle is installed. The limit handle is fitted with two limit blocks, which are used to limit the adjusted test platform.

[0015] Optionally, a position display is installed on the adjusting screw adjacent to the adjusting plate, and a locking handle for locking and positioning the adjusting screw is installed on the adjusting seat.

[0016] Optionally, the test base is equipped with support feet at its four corners, a test cover is installed on the test base, and a test door is installed on the test cover.

[0017] According to the second aspect, this disclosure provides a testing method for couplings, applied to the coupling forward and reverse rotation testing equipment as described in the first aspect, comprising: In step S100, the two ends of the coupling to be tested are respectively installed between the first connecting flange and the second connecting flange. The test bench is moved relative to the test base by the adjustment component so that the coupling to be tested is in a preset axial preload state. Step S200: The test motor is controlled by the control cabinet to drive the test coupling to periodically switch between forward and reverse rotation, so that the test coupling is subjected to alternating torque impact loads during the reversal process. In step S300, during the forward and reverse switching process, the torque shaft of the torque sensor, as a fixed constraint end, bears the reaction torque. The torque sensor is used to detect the torsional deformation of the torque shaft to simulate the reverse load state in actual working conditions. Step S400: Based on the torque change data collected by the torque sensor, evaluate the fatigue performance and durability of the tested coupling under periodic forward and reverse impact loads.

[0018] As can be seen from the above technical solution, the coupling forward and reverse rotation testing device and method in the exemplary embodiment of this disclosure has at least the following advantages and positive effects: By setting test components and adjustment components on the test base, and using the test motor to drive the tested coupling to periodically switch between forward and reverse rotation, the coupling can withstand alternating torque impact loads similar to actual working conditions during the test, thereby effectively simulating the operating state of automated equipment, servo drive systems, and frequently reversing transmission mechanisms.

[0019] Meanwhile, the output torque of the coupling under test is detected in real time by a torque sensor, which also provides a reaction torque as a fixed constraint end. This enables the coupling to form a stable load environment during the test, which not only improves the simulation of the reversing impact condition, but also accurately obtains the torque change characteristics of the coupling during the forward and reverse reversing process, providing reliable data for the fatigue performance analysis and life assessment of the coupling under test.

[0020] Furthermore, by adjusting the position of the test bench using the adjustment components, the distance between the first and second connecting flanges can be adjusted according to different specifications of the couplings being tested, thereby enabling rapid installation and axial preload adjustment of different models of couplings, improving the applicability and testing convenience of the equipment.

[0021] Therefore, this disclosure can effectively solve the problem that existing coupling testing equipment is unable to simulate high-frequency forward and reverse rotation conditions and cannot accurately evaluate the commutation durability performance, and can realize accurate testing of the forward and reverse rotation durability performance, fatigue life and long-term operating stability of couplings, thereby improving the authenticity and reliability of test results.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 A three-dimensional structural schematic diagram of a coupling forward and reverse rotation testing device according to an embodiment of the present disclosure is shown; Figure 2 A partial structural schematic diagram of a coupling forward and reverse rotation testing device according to an embodiment of the present disclosure is shown; Figure 3 A partial side view of a coupling forward and reverse rotation test apparatus according to an embodiment of the present disclosure is shown; Figure 4 It shows Figure 3 A schematic diagram of the AA cross-sectional structure; Figure 5 A three-dimensional structural schematic diagram of a locking component in a coupling forward and reverse rotation testing device according to an embodiment of the present disclosure is shown; Figure 6 An exploded structural diagram of a locking component in a coupling forward and reverse rotation testing device according to an embodiment of this disclosure is shown; Figure 7 A three-dimensional structural schematic diagram of a limiter in a coupling forward and reverse rotation testing device according to an embodiment of the present disclosure is shown; Figure 8 A flowchart of a testing method for a coupling according to an embodiment of the present disclosure is shown.

[0024] Illustration: 10. Test base; 11. Support foot; 20. Test machine cover; 21. Test door; 22. Notch; 30. Test assembly; 31. Torque sensor; 311. Sensor body; 312. Torque shaft; 32. Test platform; 33. Reducer; 331. Drive shaft; 34. Test motor; 35. First connecting flange; 36. Locking component; 361. Locking seat; 3611. Locking plate; 3612. First locking ramp; 362. Locking ring; 3621. Second locking ramp; 363. Locking screw; 37. Second connecting flange; 40. Adjustment assembly; 41. Adjustment seat; 42. Adjustment screw; 43. Adjustment disc; 44. Limiter; 441. Limit seat; 442. Limit handle; 443. Limit block; 45. Guide rail; 46. Slider; 47. Position indicator; 48. Locking handle. Detailed Implementation

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0026] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0027] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0028] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0029] In one embodiment of this disclosure, please refer to Figures 1 to 7 A coupling forward and reverse rotation testing device includes a test base 10 and a control cabinet (not shown). The test base 10 is equipped with a test component 30 and an adjustment component 40.

[0030] The test assembly 30 includes a torque sensor 31 and a test bench 32, which is mounted on the test base 10. A reducer 33 and a test motor 34 are mounted on the test bench 32, and the reducer 33 and the test motor 34 are connected in a driving relationship. A second connecting flange 37 is fixedly mounted on the drive shaft 331 of the reducer 33, and a first connecting flange 35, which is opposite to the second connecting flange 37, is mounted on the torque sensor 31.

[0031] The coupling under test is installed between the first connecting flange 35 and the second connecting flange 37, with one end connected to the first connecting flange 35 and the other end connected to the second connecting flange 37. When the test motor 34 is running, power is transmitted via the reducer 33 to the drive shaft 331, then to the second connecting flange 37, and finally to the first connecting flange 35 via the coupling under test, thus forming a complete test transmission link.

[0032] In actual industrial equipment, couplings, in addition to transmitting torque, also need to frequently perform start-stop, forward and reverse rotation switching actions. For example, automated production lines, robotic arms, packaging equipment, and servo drive systems all experience frequent reversing conditions during operation. During reversing, couplings are subjected to periodic torque impact loads, which can easily lead to problems such as elastomer fatigue, wear of connecting parts, and increased clearances after long-term operation.

[0033] Most existing coupling testing equipment uses a unidirectional continuous rotation testing method, which is difficult to simulate the actual stress state of the coupling under frequent reversing conditions. Therefore, in this embodiment, the control cabinet is used to control the test motor 34 to switch between forward and reverse rotation according to a preset program. The control cabinet can preset parameters such as reversing angle, reversing frequency, operating speed, and test cycle, so that the test motor 34 drives the coupling under test to periodically switch between forward and reverse rotation within a preset angle range.

[0034] When the test motor 34 switches from forward to reverse rotation, the coupling under test will experience torque impact in the opposite direction; when the test motor 34 switches from reverse to forward rotation, the coupling under test will again experience impact load with changing direction. By continuously repeating the above process, the frequent reversing operation of the coupling in actual equipment can be simulated.

[0035] Torque sensor 31 is electrically connected to the control cabinet and is used to detect the torque data output by the coupling under test in real time. Torque sensor 31 can collect the torque changes of the coupling during starting, braking and reversing processes in real time, and send the detection data to the control cabinet for storage and analysis.

[0036] Furthermore, the torque sensor 31 is not only used for torque detection but also as a reverse load constraint end. When the tested coupling reverses direction, the torque sensor 31, acting as a fixed constraint end, provides a reaction torque, thereby simulating the reverse resistance state generated on the load side of an actual transmission system. Compared to no-load reversal testing, this method allows the coupling to form a force environment closer to actual working conditions during the testing process, thus improving the authenticity of the test results.

[0037] The adjusting assembly 40 is used to adjust the position of the test bench 32 on the test base 10. Since the installation lengths of different models of couplings vary, the adjusting assembly 40 can be used to move the test bench 32 along the test base 10, causing the second connecting flange 37 to move closer to or further away from the first connecting flange 35, thereby adjusting the installation distance between the two connecting flanges. When installing the coupling under test, the position of the test bench 32 is adjusted by the adjusting assembly 40 to bring the coupling under test into a preset axial preload state before installation is completed. This allows for the adaptation to the testing requirements of couplings of different specifications, improving the applicability and ease of installation of the equipment.

[0038] The coupling forward and reverse rotation test equipment in the above embodiment drives the tested coupling to perform periodic forward and reverse rotation switching through the test motor 34, and uses the torque sensor 31 to detect the output torque of the coupling in real time and constrain the reverse torque, so that the coupling can withstand alternating impact loads similar to actual working conditions during the test, thereby realizing the test and evaluation of the coupling's commutation durability, fatigue life and long-term operational stability.

[0039] In one embodiment of this disclosure, such as Figure 3 and Figure 4 As shown, the torque sensor 31 includes a sensor body 311 and a torque shaft 312 passing through the sensor body 311.

[0040] The end of the torque shaft 312 away from the first connecting flange 35 is fixedly connected to the rigid support structure on the test base 10, and the end of the torque shaft 312 close to the first connecting flange 35 is fixedly connected to the first connecting flange 35.

[0041] The torque of the tested coupling is transmitted from the second connecting flange 37 to the first connecting flange 35, and further to the torque shaft 312, and finally formed by the rigid support structure of the test base 10 to form a reverse constraint torque.

[0042] During the forward and reverse rotation of the coupling under test, the torque shaft 312 undergoes slight elastic torsional deformation under the action of the reverse constraint torque. The torque sensor 31 is used to detect the amount of torsional deformation of the torque shaft 312 and convert it into a torque signal, thereby realizing the real-time measurement of the output torque of the coupling under test.

[0043] It should be noted that the torque sensor 31 itself does not provide rigid constraint torque; its reverse constraint torque is provided by the rigid support structure of the test base 10. The torque sensor 31 is only used to detect the elastic torsional deformation of the torque shaft 312 under load in order to obtain the coupling output torque data.

[0044] In one embodiment of this disclosure, please refer to Figures 4 to 6The coupling forward and reverse rotation test equipment also includes three locking parts 36, two of which are located at both ends of the torque shaft 312, and the other locking part 36 is located at the connection position between the drive shaft 331 and the second connecting flange 37.

[0045] Because the torque shaft 312 and the drive shaft 331 have different structural dimensions and torsional stiffness, the alternating stress state experienced by the connection points on both sides is different during frequent switching between forward and reverse rotation. If identical connection structures are used, local stress concentration is likely to occur, thus affecting the stability of the test results. Therefore, in this embodiment, the two locking members 36 located at both ends of the torque shaft 312 are of the same specification, while the locking member 36 installed on the drive shaft 331 is of a different specification.

[0046] The two locking members 36 located at both ends of the torque shaft 312 enable a basically consistent locking stress distribution at both ends of the torque shaft 312, thereby reducing the additional load caused by the difference in connection stiffness during alternating forward and reverse impacts. The locking member 36 located at the drive shaft 331 is used to match the different torsional stiffness characteristics between the drive shaft 331 and the torque shaft 312, making the power transmission process smoother.

[0047] With the above structural design, the uniformity of force on each connection part can be improved during the continuous forward and reverse rotation of the tested coupling, reducing the risk of loosening of the connection and local stress concentration, thereby ensuring the stability of the test process and the reliability of the test results.

[0048] In one embodiment of this disclosure, please refer to Figure 5 and Figure 6 Each locking element 36 includes a locking seat 361 and a locking ring 362, with the locking ring 362 sleeved on the outer periphery of the locking seat 361.

[0049] Among them, the two locking members 36 located at both ends of the torque shaft 312 are respectively installed at the connection position between the test base 10 and the torque shaft 312 and the connection position between the first connecting flange 35 and the torque shaft 312; the locking member 36 located at the drive shaft 331 is installed at the connection position between the second connecting flange 37 and the drive shaft 331.

[0050] Specifically, two locking seats 361 located at both ends of the torque shaft 312 are respectively sleeved on the torque shaft 312, one locking seat 361 is pressed against the test base 10, and the other locking seat 361 is pressed against the first connecting flange 35; the locking seat 361 located on the drive shaft 331 is sleeved on the drive shaft 331 and pressed against the second connecting flange 37.

[0051] Accordingly, one locking ring 362 is pressed against the test base 10, and the other two locking rings 362 are pressed against the first connecting flange 35 and the second connecting flange 37, respectively. When the locking screw 363 passes through the locking ring 362 and connects to the locking seat 361, the locking screw 363 generates an axial tension, causing the locking ring 362 to move towards the locking seat 361.

[0052] As the locking ring 362 and the locking seat 361 approach each other, the locking member 36 can not only generate a clamping force in the axial direction, so that the first connecting flange 35, the second connecting flange 37 and the test base 10 form a stable pressing state with the corresponding shaft, but also generate a clamping force in the radial direction, so that the locking seat 361 forms a reliable connection with the torque shaft 312 or the transmission shaft 331.

[0053] When the coupling under test switches between forward and reverse rotation, the reversing impact load is periodically applied between the first connecting flange 35, the second connecting flange 37, and the corresponding shaft. Through the combined action of the axial clamping force and the radial clamping force, loosening or axial movement of the connection parts under alternating impact loads can be avoided, thereby ensuring that the coupling under test is always in a stable pre-tightened state and improving the stability and repeatability of the test process.

[0054] In one embodiment of this disclosure, please continue to refer to Figure 5 and Figure 6 The locking ring 362 has an open ring structure, and the locking seat 361 has multiple locking pieces 3611 evenly distributed circumferentially. The locking pieces 3611 form a gap area between each locking piece 3611, so that the locking pieces 3611 can elastically contract and expand in the radial direction.

[0055] Specifically, the outer wall of the locking piece 3611 has a first locking ramp 3612, and the inner wall of the locking ring 362 has a second locking ramp 3621 corresponding to the first locking ramp 3612. The first locking ramp 3612 and the second locking ramp 3621 fit together to form a wedge-shaped fit structure.

[0056] As the locking screw 363 is continuously tightened, the locking ring 362 moves axially toward the locking seat 361. Under the cooperation of the first locking inclined surface 3612 and the second locking inclined surface 3621, the axial displacement of the locking ring 362 is converted into the radial contraction displacement of the locking piece 3611, causing multiple locking pieces 3611 to be pressed synchronously toward the axial direction.

[0057] Because the locking plate 3611 is in close contact with the torque shaft 312 or the drive shaft 331, a uniformly distributed radial clamping force can be formed on the outer circumference of the shaft. Compared with traditional keyed connections or localized clamping structures, the above method can make the locking force uniformly distributed along the circumference, effectively reducing localized stress concentration.

[0058] Furthermore, when the coupling undergoes high-frequency forward and reverse switching, the wedge-tight structure formed by the first locking ramp 3612 and the second locking ramp 3621 can continuously maintain the locking state. Even under the action of periodic reversing impact load, the locking member 36 can still maintain a stable clamping force, thereby reducing the risk of connection loosening and improving the connection reliability and long-term operational stability of the entire test system.

[0059] In one embodiment of this disclosure, please refer to Figure 1 , Figure 3 as well as Figure 7 The test bench 32 is slidably connected to the test base 10; the adjustment assembly 40 includes an adjustment seat 41, an adjustment screw 42 and an adjustment plate 43. The adjustment seat 41 is fixedly installed on the test base 10, the adjustment screw 42 passes through the adjustment seat 41 and the test bench 32 in sequence, and the adjustment plate 43 is fixedly installed at the end of the adjustment screw 42 away from the test bench 32.

[0060] Since the axial installation dimensions of different models of couplings vary, the installation distance between the first connecting flange 35 and the second connecting flange 37 needs to be adjusted according to the length of the coupling under test before testing. In this embodiment, the adjusting screw 42 is rotated by rotating the adjusting disc 43. Since a threaded transmission relationship is formed between the adjusting screw 42 and the test platform 32, the test platform 32 can move along the length direction of the test base 10.

[0061] When the test bench 32 moves, the reducer 33, drive shaft 331, and second connecting flange 37 mounted on the test bench 32 move synchronously, thereby adjusting the installation distance between the second connecting flange 37 and the first connecting flange 35. The operator can adjust the position of the test bench 32 according to the actual length of the coupling being tested, so that the coupling reaches the preset axial preload state after installation.

[0062] After the test bench 32 has completed its position adjustment, it needs to maintain its position stability to avoid displacement during forward and reverse impact tests. Therefore, in this embodiment, a limiter 44 is installed at the bottom of the test bench 32. The limiter 44 is used to fix and limit the adjusted test bench 32, thereby ensuring the stability of the installation position during the test.

[0063] In one embodiment of this disclosure, please continue to refer to Figure 1 , Figure 3 as well as Figure 7 A guide rail 45 is fixedly installed on the test base 10, and multiple sliders 46 are fixedly installed on the bottom of the test platform 32. Each slider 46 slides in cooperation with the guide rail 45. In this embodiment, there are four sliders 46.

[0064] The guide rail 45 is used to provide a moving guide for the test bench 32, so that the test bench 32 always moves in a straight line along the preset direction during the adjustment process, thereby avoiding the test bench 32 from swaying or tilting and improving the coaxiality between the two connecting flanges.

[0065] The limiter 44 is disposed between the two sliders 46. The limiter 44 includes a limit seat 441, a limit handle 442 and two limit blocks 443. The limit handle 442 is mounted on the limit seat 441 and the two limit blocks 443 are sleeved on the limit handle 442.

[0066] Once the test bench 32 has moved to the preset position, the operator rotates the limit handle 442, causing the two limit blocks 443 to move closer together and clamp the corresponding guide rails 45, thereby limiting the test bench 32. Through this structural design, the test bench 32 can maintain a stable position when subjected to alternating forward and reverse impact loads, preventing the test results from being affected by loosening of the test bench 32 during the test.

[0067] In one embodiment of this disclosure, please refer to Figure 1 and Figure 3 A position indicator 47 is mounted on the adjusting screw 42, and the position indicator 47 is located near the adjusting plate 43. The position indicator 47 is used to display the displacement of the adjusting screw 42 or the current position of the test platform 32.

[0068] When adjusting test bench 32, the operator can read the adjustment data in real time through position display 47, thereby quickly obtaining the required installation spacing and improving adjustment efficiency and accuracy. Simultaneously, the position parameters corresponding to different specifications of couplings can be recorded, allowing for direct adjustment based on the displayed data during subsequent tests, improving installation consistency when the equipment is reused.

[0069] Furthermore, a locking handle 48 is installed on the adjusting seat 41, which is used to lock and position the adjusting screw 42. After the test bench 32 is adjusted to the target position, the operator can operate the locking handle 48 to lock the adjusting screw 42, thereby preventing the adjusting screw 42 from rotating due to vibration or impact load during the test. Through the dual limiting effect of the locking handle 48 and the limiter 44, the fixed stability of the test bench 32 can be further improved, so that the coupling can maintain a stable installation state during long-term forward and reverse durability testing, thereby improving the accuracy and reliability of the test results.

[0070] In one embodiment of this disclosure, please refer to Figures 1 to 2 Support feet 11 are installed at the four corners of the test base 10. The support feet 11 are used to support the entire test equipment, so that the test base 10 can be placed stably on the ground or work platform, thereby improving the overall load-bearing stability of the equipment.

[0071] A test housing 20 is also installed on the test base 10. The test housing 20 is used to provide overall protection for the test component 30 and the adjustment component 40. The test housing 20 covers the outside of the test base 10 and forms a closed or semi-closed structural space with the test base 10 to reduce the interference of the external environment on the test process.

[0072] Furthermore, the test chamber hood 20 is equipped with a test door 21, which allows operators to install, disassemble, and maintain the coupling under test. During testing, the test door 21, when closed, protects the internal test area, preventing splashes or accidental contact by external personnel from affecting the testing process. A notch 22 is provided on one side of the test chamber hood 20, through which the adjusting screw 42 passes.

[0073] The above structural design ensures that the entire coupling forward and reverse rotation testing equipment has good structural stability and safety protection performance during operation, improving the reliability and safety of the equipment under long-term high-frequency testing conditions.

[0074] In one embodiment of this disclosure, a testing method for a coupling is provided, which is applied to the coupling forward and reverse rotation testing equipment as described in the above embodiments.

[0075] In step S100, the two ends of the coupling to be tested are respectively installed between the first connecting flange 35 and the second connecting flange 37, and the position of the test bench 32 is adjusted by the adjusting component 40 so that the distance between the first connecting flange 35 and the second connecting flange 37 meets the installation requirements of the coupling to be tested, thereby putting the coupling to be tested in a preset axial preload state.

[0076] During installation, the test bench 32 is moved by adjusting the lead screw 42, and the positions of the reducer 33 and the second connecting flange 37 are adjusted synchronously to adapt to the structural dimensions of couplings of different specifications and ensure that the coupling is in a stable stress state after installation.

[0077] In step S200, the test motor 34 is controlled by the control cabinet to run according to a preset program, so that the test motor 34 drives the test coupling to periodically switch between forward and reverse rotation within a set angle range, so that the test coupling continuously bears alternating torque impact loads during operation.

[0078] During this process, when the test motor 34 switches from forward to reverse or from reverse to forward, the tested coupling will be subjected to torque impact from instantaneous directional changes, thereby simulating the frequent reversing operation state in actual industrial equipment.

[0079] In step S300, during the forward and reverse switching process, the output torque of the coupling under test is detected in real time by the torque sensor 31, and the detection data is transmitted to the control cabinet in real time for recording and analysis.

[0080] Meanwhile, the torque sensor 31 provides a reaction torque as a fixed constraint end, so that the coupling under test is in a state of reverse load during the test, thereby simulating the resistance effect generated at the load end in actual working conditions.

[0081] Step S400: Based on the torque change data collected by the torque sensor 31, analyze the fatigue performance of the tested coupling under periodic forward and reverse impact loads, and evaluate its durability life.

[0082] By statistically analyzing the torque fluctuation amplitude, peak value change, and cyclic decay characteristics during the reversing process, the durability performance of the coupling under different working conditions can be obtained, thus achieving a comprehensive evaluation of the coupling's adaptability to forward and reverse working conditions.

[0083] In summary, by using the above methods, the tested coupling can undergo durability testing under alternating forward and reverse operating conditions that closely resemble actual operating conditions, thereby improving the degree of matching and reliability of the test results with actual application scenarios.

[0084] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0085] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A coupling forward and reverse rotation testing device, characterized in that, It includes a test base and a control cabinet, wherein the test base is equipped with test components and adjustment components; The test assembly includes a torque sensor and a test bench. A speed reducer and a test motor are mounted on the test bench. The torque sensor is provided with a first connecting flange. A second connecting flange, which is arranged opposite to the first connecting flange, is fixedly sleeved on the drive shaft of the speed reducer. One end of the coupling under test is connected to the first connecting flange, and the other end of the coupling under test is connected to the second connecting flange. The adjustment component is used to adjust the position of the test bench on the test base, so that the second connecting flange is closer to or farther from the first connecting flange; the control cabinet is used to control the test motor to drive the coupling under test to perform a periodic forward and reverse rotation durability test at a preset angle; The torque shaft of the torque sensor serves as a rigid constraint end fixedly mounted on the test base, used to provide a reaction torque during the reversal process of the coupling under test. The torque sensor is used to measure the torsional deformation of the torque shaft in real time during the forward and reverse reversal process of the coupling under test.

2. The coupling forward and reverse rotation testing device according to claim 1, characterized in that, The torque sensor includes a sensor body and a torque shaft passing through the sensor body. The end of the torque shaft away from the first connecting flange is fastened to the test base, and the end of the torque shaft near the first connecting flange is fixedly connected to the first connecting flange.

3. The coupling forward and reverse rotation testing equipment according to claim 2, characterized in that, It also includes three locking components: the first locking component is connected to the test base, the second locking component is connected to the first connecting flange, and the third locking component is connected to the second connecting flange. The first and second locking members have the same structure, and the inner diameter of the third locking member is larger than the inner diameter of the first and second locking members.

4. The coupling forward and reverse rotation testing device according to claim 3, characterized in that, Each of the locking elements includes a locking seat, and the locking seat is fitted with a locking ring; Two of the locking seats are sleeved on both ends of the torque shaft and press against the test base and the first connecting flange; the other locking seat is sleeved on the drive shaft and press against the second connecting flange; the first locking ring abuts against the test base, the second locking ring abuts against the first connecting flange, and the third locking ring abuts against the second connecting flange. When the locking seat and the locking ring are fastened together by multiple locking screws, axial clamping force and radial clamping force are generated simultaneously to keep the axial preload of the tested coupling constant during the process of the torque sensor providing reverse torque constraint.

5. The coupling forward and reverse rotation testing device according to claim 4, characterized in that, The locking ring is an open ring, and the locking seat has a plurality of locking pieces arranged at intervals along its circumference. The outer wall of the locking piece is provided with a first locking slope, and the inner wall of the locking ring is provided with a second locking slope that is arranged in a ring and connected to the first locking slope.

6. The coupling forward and reverse rotation testing device according to claim 1, characterized in that, The test bench is slidably connected to the test base. The adjustment assembly includes an adjustment seat fixedly connected to the test base and an adjustment screw. The adjustment screw passes through the adjustment seat and the test bench in sequence. An adjustment plate is fixedly installed at the end of the adjustment screw away from the test bench. A limiter for limiting the adjusted test bench is installed at the bottom of the test bench.

7. The coupling forward and reverse rotation testing device according to claim 6, characterized in that, A guide rail is fixedly installed on the test base, and multiple sliders that are fixedly connected to the test platform are slidably connected on the guide rail. The limiter is located between two of the sliders. The limiter includes a limit seat, on which a limit handle is installed. The limit handle is fitted with two limit blocks, which are used to clamp the guide rail to limit the adjusted test platform.

8. The coupling forward and reverse rotation testing device according to claim 6, characterized in that, The adjusting screw is equipped with a position indicator disposed adjacent to the adjusting plate, and the adjusting seat is equipped with a locking handle for locking and positioning the adjusting screw.

9. The coupling forward and reverse rotation testing device according to claim 1, characterized in that, The test base is equipped with support feet at its four corners, a test machine cover is installed on the test base, and a test door is installed on the test machine cover.

10. A method for testing couplings, applied to the coupling forward and reverse rotation testing equipment as described in any one of claims 1 to 9, characterized in that, include: In step S100, the two ends of the coupling to be tested are respectively installed between the first connecting flange and the second connecting flange. The test bench is moved relative to the test base by the adjustment component so that the coupling to be tested is in a preset axial preload state. Step S200: The test motor is controlled by the control cabinet to drive the test coupling to periodically switch between forward and reverse rotation, so that the test coupling is subjected to alternating torque impact loads during the reversal process. In step S300, during the forward and reverse switching process, the torque shaft of the torque sensor, as a fixed constraint end, bears the reaction torque. The torque sensor is used to detect the torsional deformation of the torque shaft to simulate the reverse load state in the actual working condition of the tested coupling. Step S400: Based on the torque change data collected by the torque sensor, evaluate the fatigue performance and durability of the tested coupling under periodic forward and reverse impact loads.

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