Torque durability test tool

Abstract

The utility model relates to the technical field of torque detection, in particular to a torque durability test tool. The torque durability test tool is suitable for performing torque durability test on workpiece assemblies including a rotating shaft part and a rotating shaft connecting part, such as a gear shifting element assembly. The torque durability test tool comprises a workpiece fixing mechanism and a torsion driving mechanism. The workpiece fixing mechanism is provided with a clamping part, and the clamping part can connect and fix the rotating shaft connecting part; the torsion driving mechanism is provided with an output shaft, the output shaft is used for being fixedly connected with the rotating shaft part of the workpiece assembly, and alternating torque is output to the rotating shaft part through reciprocating rotation of the output shaft. The torque durability test tool can apply an alternating torque to the rotating shaft part, so that a torque durability test is performed on the rotating shaft part, and the torsional rigidity of the rotating shaft part and the connecting part of the rotating shaft part and the rotating shaft connecting part is detected; and the torque test tool is convenient to install and test the workpiece assembly, and the torque durability test efficiency of the workpiece assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of torque detection, and in particular to a torque endurance testing tool. Background Art

[0002] The shift element assembly is a component connected between the engine and the transmission, used to transfer the engine power to the transmission, and then output the power to the wheels through the cooperation of the transmission and the differential to drive the car.

[0003] The torque endurance test of the shift element assembly requires that it be verified that the entire assembly is under alternating force load for a certain number of cycles in a simulated assembly state. At present, the shift element assembly is mainly assembled into the automobile gearbox, and then combined with other parts in the gearbox for testing. The gearbox needs to be used for testing, and the assembly is tested together. Once a failure occurs, it is difficult to determine whether the problem is with the shift element assembly or other parts in the gearbox, and the reliability of the test results is poor. In addition, each time, the components and a series of matching parts need to be assembled in the gearbox, resulting in low test efficiency. Utility Model Content

[0004] The present application provides a torque endurance testing tool, which can improve the efficiency of torque endurance testing of a workpiece assembly including a rotating shaft portion and a rotating shaft connecting portion, such as a shift element assembly.

[0005] In order to achieve the above technical effects, the present application provides a torque endurance test tool, which is suitable for torque detection of a workpiece assembly, wherein the workpiece assembly includes a rotating shaft portion and a rotating shaft connecting portion, wherein the rotating shaft portion and the rotating shaft connecting portion are fixedly connected, and the torque endurance test tool includes:

[0006] The workpiece fixing mechanism is provided with a clamping portion, and the clamping portion is used to clamp and fix the rotating shaft connecting portion;

[0007] The torsion drive mechanism is provided with an output shaft, wherein the output shaft is used to be fixedly connected to the rotating shaft portion and output an alternating torque to the rotating shaft portion through the reciprocating rotation of the output shaft.

[0008] In some embodiments, the torsion drive mechanism further comprises:

[0009] A shaft seat for rotational connection of the output shaft;

[0010] A connecting block, disposed at the end of the output shaft and used to coaxially connect the output shaft and the rotating shaft;

[0011] A driving arm, fixedly connected to the periphery of the output shaft;

[0012] The output end of the cylinder assembly is hinged to an end of the driving arm away from the output shaft.

[0013] In some embodiments, the torsional drive mechanism is provided with a torque sensor for detecting the output torque of the output shaft.

[0014] In some embodiments, the driving arm includes a first driving arm and a second driving arm, and the first driving arm and the second driving arm are symmetrically connected to the output shaft;

[0015] The cylinder assembly includes a first cylinder and a second cylinder. The output end of the first cylinder is hinged to the first driving arm, and the output end of the second cylinder is hinged to the second driving arm.

[0016] In some embodiments, a spherical bearing and a transfer shaft are provided at the output end of the cylinder assembly, and the transfer shaft is hinged to the driving arm.

[0017] In some embodiments, the workpiece fixing mechanism further comprises:

[0018] Fixed vertical board;

[0019] The fixing plate is connected to the fixing vertical plate in a lifting manner, and the clamping part is arranged on the fixing plate.

[0020] In some embodiments, the fixing plate is connected to a positioning plate, the positioning plate is provided with a positioning hole, and the positioning hole is provided with a bearing / bushing adapted to the rotating shaft portion.

[0021] In some embodiments, the clamping portion includes a locking block and a locking bolt, the locking block is provided with a locking groove for accommodating the rotating shaft connecting portion, and the locking bolt extends through the locking groove and is used to abut and compress the rotating shaft connecting portion.

[0022] In some embodiments, a tooling base plate is further included, and the workpiece fixing mechanism and the torsion driving mechanism are both arranged on the tooling base plate.

[0023] In some embodiments, a mobile frame is further included, the tooling base plate is mounted on the mobile frame, and when the torsion drive mechanism includes a cylinder assembly, the mobile frame is provided with a pneumatic valve connected to the cylinder assembly.

[0024] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: when performing a torque endurance test on a workpiece assembly such as a shift element assembly, it is only necessary to clamp and fix the shaft connection part through the clamping part of the workpiece fixing mechanism, and then fix the output shaft of the torsion drive mechanism and the shaft part of the shift element assembly, output the alternating torque through the output shaft and apply it to the shaft part, perform a torque endurance test on the shaft part, and detect the torsional stiffness of the shaft part and the connection between the shaft part and the shaft connection part. The torque endurance test fixture can perform a separate test on the shift element assembly without the need to assemble it in the gearbox with other parts for testing, making the shift element assembly easy to disassemble and significantly improving the test efficiency of the shift element assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0028] Figure 1 A schematic diagram of a torque endurance test tool provided in one embodiment of the present application;

[0029] Figure 2 for Figure 1 Working principle diagram of medium torque endurance test fixture;

[0030] Figure 3 for Figure 2 A top view of

[0031] Figure 4 A schematic diagram of a torque endurance testing tool provided in another embodiment of the present application.

[0032] Description of reference numerals:

[0033] 001-rotating shaft; 002-rotating shaft connecting part;

[0034] 10-mobile rack; 11-equipment table; 12-pneumatic valve;

[0035] 20- tooling bottom plate;

[0036] 30-workpiece fixing mechanism; 31-fixed vertical plate; 32-lifting guide rail; 33-fixed plate; 34-clamping part; 35-positioning plate; 36-bearing / bushing;

[0037] 40-torsion drive mechanism; 41-shaft seat; 42-first drive arm; 43-second drive arm; 44-hinge pin; 45-adapter shaft; 46-spherical bearing; 47-first cylinder; 48-second cylinder; 49-connecting block;

[0038] 50-Torque sensor. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0040] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0041] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0042] In order to solve the technical problem of low efficiency of torque durability test of shift element assembly in the prior art, the present application provides a torque durability test tool, which can perform torque durability test on the shift element assembly and significantly improve the test efficiency. It is worth mentioning that the torque durability test tool is not only suitable for testing the shift element assembly, but also for other workpiece assemblies including a rotating shaft portion 001 and a rotating shaft connecting portion 002 that are fixed to each other.

[0043] The present application embodiment provides a torque endurance test tool, such as Figures 1 to 3 As shown, it mainly includes two parts: a workpiece fixing mechanism 30 and a torsion drive mechanism 40. The workpiece fixing mechanism 30 is provided with a clamping part 34, through which the rotating shaft connecting part 002 is clamped and fixed; then the output shaft of the torsion drive mechanism 40 and the rotating shaft part 001 are fixedly connected, and the assembly state of the shift element assembly is simulated by the fixing of the output shaft to the rotating shaft part 001 and the fixing of the rotating shaft connecting part 002 by the clamping part 34. The rotating shaft part 001 transmits the alternating torque output by the output shaft to the rotating shaft connecting part 002, so as to detect the torsional stiffness of the rotating shaft part 001 and the connection between the rotating shaft part 001 and the rotating shaft connecting part 002, and complete the torque durability test of the shift element assembly.

[0044] The torque endurance test fixture is convenient for installing and disassembling the shift element assembly. There is no need to install the shift element assembly into the gearbox for testing, which significantly improves the test efficiency. At the same time, it avoids the interference of other parts failures that affect the test results, thereby improving the accuracy of the test.

[0045] It should be noted that the function of the output shaft is to output alternating torque to the shaft portion 001 through reciprocating rotation. In the actual test process, since the shaft connection portion 002 is clamped and fixed, the shaft portion 001 and the shaft connection portion 002 are rigidly fixed, and the shaft portion 001 remains basically fixed, and only a slight rigid torsional deformation exists at the shaft portion 001 and the connection between the shaft portion 001 and the shaft connection portion 002. Correspondingly, the output shaft only has a rotation tendency of reciprocating rotation in the forward and reverse directions or only has a slight rotation in the forward and reverse directions.

[0046] Combined with reference Figure 1 and Figure 2In some embodiments, the torsion drive mechanism 40 includes a shaft seat 41, an output shaft, a connecting block 49, a driving arm and a cylinder assembly. The shaft seat 41 is fixed, and the output shaft is vertically mounted on the shaft seat 41 and can rotate relative to the shaft seat 41. The driving arm is connected to the outer periphery of the output shaft, and the driving arm is generally extended along the radial direction of the output shaft. The output end of the cylinder assembly is hinged to the end of the driving arm away from the output shaft, and the micro-movement of the output end of the cylinder assembly along its extension direction is converted into the rotation of the driving arm around the output shaft, driving the output shaft to generate a reciprocating rotation trend or a micro-rotation in the positive and negative directions.

[0047] When testing the shift element assembly, the shaft connection part 002 is connected and fixed through the clamping part 34 of the workpiece fixing mechanism 30, and then the output shaft and the shaft part 001 are fixedly connected by the connecting block 49, and finally the cylinder assembly is driven to slightly extend and retract to drive the output shaft to output alternating torque through the driving arm. The shift element assembly is easy to install and disassemble during the whole process, and there is no need to use the gearbox and other parts to simulate the assembly state, which significantly improves the test efficiency.

[0048] Among them, the driving arm can increase the force arm of the output shaft, so that the cylinder assembly can cooperate with the driving arm with a small driving force to make the output shaft output a relatively large torque. In order to facilitate the control of torque, a torque sensor 50 for detecting torque can also be set at the output shaft of the torsion drive mechanism 40, and the output power of the cylinder assembly can be adjusted according to the torque value fed back by the torque sensor 50. It can be understood that in the specific implementation, not only the cylinder assembly can be used, but also a telescopic drive mechanism such as a hydraulic cylinder can be used.

[0049] The torsional drive mechanism 40 is also not limited to the structure of the articulated drive arm at the output end of the cylinder assembly, but can also be achieved through the structure of a drive motor cooperating with a reducer. Compared with the drive motor, the setting of the cylinder assembly effectively avoids the risk of overheating and burning of the drive motor due to blocking, and is more suitable for long-term operation testing. By reciprocating and extending the cylinder assembly a preset number of times, the torsional fatigue detection of the workpiece assembly can be achieved.

[0050] In some embodiments, the driving arm includes a first driving arm 42 and a second driving arm 43, and the cylinder assembly includes a first cylinder 47 and a second cylinder 48. The first driving arm 42 and the second driving arm 43 are connected to both sides of the output shaft at 180° intervals, and the first cylinder 47 and the second cylinder 48 are arranged parallel to each other.

[0051] The output end of the first cylinder 47 is hinged to the end of the first drive arm 42 away from the output shaft; the output end of the second cylinder 48 is hinged to the end of the second drive arm 43 away from the output shaft. The first cylinder 47 and the second cylinder 48 can be cylinders of different models. When testing a workpiece assembly such as a shift element assembly, the first cylinder 47 can be hinged to the first drive arm 42 as needed, and the second cylinder 48 and the second drive arm 43 can be disconnected; or the first cylinder 47 can be disconnected from the first drive arm 42, and the second cylinder 48 and the second drive arm 43 can be hinged. In other words, when testing different workpiece assemblies, usually only one of the first cylinder 47 and the second cylinder 48 is connected to the output shaft through the corresponding drive arm, so that the output shaft outputs a suitable torque to meet the torque endurance test of different models of shift element assemblies.

[0052] In order to facilitate the first cylinder 47 and the second cylinder 48 to quickly articulate or release the articulated state through the corresponding driving arm and the output shaft. The first driving arm 42 and the second driving arm 43 are both provided with an articulated ear seat at one end away from the output shaft, and the output ends of the first cylinder 47 and the second cylinder 48 are provided with corresponding articulated holes. The first cylinder 47 and the first driving arm 42 are articulated or released by inserting or pulling out the hinge pin 44 into or out of the articulated ear seat and the articulated hole, and the second cylinder 48 and the second driving arm 43 are articulated or released by inserting or pulling out the hinge pin 44 into or out of the articulated ear seat and the articulated hole. The articulated hole and the hinge shaft are usually matched with a moderate clearance, so that the corresponding cylinder can drive the corresponding driving arm to rotate slightly around the output shaft when the corresponding cylinder is extended and retracted, so as to avoid twisting and bending of the piston rod of the cylinder.

[0053] Furthermore, the output end of the cylinder assembly is also connected to a joint bearing 46 and an adapter shaft 45. Taking the first cylinder 47 as an example, the piston rod end of the first cylinder 47 and the adapter shaft 45 are connected through the joint bearing 46, and the hinge hole is provided at one end of the adapter shaft 45 away from the joint bearing 46. With the help of the degree of freedom of the joint bearing 46, the adapter shaft 45 can be moderately deflected relative to the piston rod of the first cylinder 47, so as to meet the requirement of the first driving arm 42 to drive the output shaft to rotate slightly and avoid bending and deformation of the piston rod of the first cylinder 47. The second cylinder 48 and the second driving arm 43 can also be connected through the joint bearing 46 and the adapter shaft 45. The joint bearing 46 can also be replaced by a universal joint, which will not be described in detail in this application.

[0054] Continue reading Figure 1The workpiece fixing mechanism 30 provided in the present application includes a fixed vertical plate 31 and a fixed plate 33. The fixed vertical plate 31 is provided with a lifting guide rail 32. The fixed plate 33 can be lifted and slid relative to the fixed vertical plate 31 through the lifting guide rail 32, and can be fixed at a suitable height relative to the fixed vertical plate 31. The clamping portion 34 is arranged on the fixed plate 33. The above arrangement enables the height of the rotating shaft portion 001 to be adjusted by lifting the fixed plate 33 after the rotating shaft connecting portion 002 of the shift element assembly is clamped and fixed, so that the rotating shaft portion 001 is conveniently fixed to the output shaft through the connecting block 49.

[0055] In order to improve the coaxiality of the connection between the rotating shaft part 001 and the output shaft, the workpiece fixing mechanism 30 also includes a positioning plate 35, which is connected to the fixing plate 33 and has a positioning hole on the positioning plate 35. The positioning hole is coaxially arranged with the output shaft and the shaft seat 41, and the positioning hole is used to position the rotating shaft part 001. When the clamping part 34 clamps and fixes the rotating shaft connecting part 002, firstly, one end of the rotating shaft part 001 is placed in the positioning hole, and then the rotating shaft connecting part 002 is fixed by means of the clamping part 34. A bearing / bushing 36 is also provided in the positioning hole, and preferably an oil-free bushing can be used to reduce the wear of the rotating shaft part 001 on the positioning hole during the test.

[0056] In some embodiments, the clamping portion 34 adopts a structure in which a locking block cooperates with a locking bolt, and the locking block is provided with a locking groove. The rotating shaft connecting portion 002 can at least partially extend into the locking groove when the rotating shaft portion 001 enters the positioning hole, and the locking bolt passes through the locking groove. The end of the locking bolt enters or exits the locking groove by twisting the locking bolt forward or backward. When the end of the locking bolt enters the locking groove and abuts against and presses the rotating shaft connecting portion 002, the rotating shaft connecting portion 002 and the shift element assembly / workpiece assembly to be tested are fixed.

[0057] The connecting block 49 generally includes a first connecting sub-block and a second connecting sub-block that can be opened and closed. The first connecting sub-block is fixedly connected or integrally formed with the output shaft, and the second connecting sub-block can be fixedly connected to the first connecting sub-block by bolts. The mating surfaces of the first connecting sub-block and the second connecting sub-block are both provided with clamping half holes. After the first connecting block 49 and the second connecting block 49 are connected and fixed, they are spliced ​​to form a clamping hole for clamping and fixing the rotating shaft part 001.

[0058] Combined with reference Figure 1 and Figure 4The torque endurance test fixture provided in the embodiment of the present application includes a fixture base plate 20 and a mobile frame 10. The workpiece fixing mechanism 30 and the torsion drive mechanism 40 are both mounted and fixed on the fixture base plate 20, so that the workpiece fixing mechanism 30 and the torsion drive mechanism 40 can be moved and installed through the fixture base plate 20. The mobile frame 10 is provided with an equipment table 11, and the fixture base plate 20 is installed and fixed through the equipment table 11. The bottom of the mobile frame 10 is provided with a roller, and the roller is provided with a locking mechanism. The setting of the roller and the locking mechanism can refer to the prior art.

[0059] When the torsion drive mechanism 40 includes a cylinder assembly, a pneumatic valve 12 and an air pump are also provided on the mobile frame 10, and the pneumatic valve 12 is connected to the corresponding cylinder assembly. The pneumatic valve 12 is used to make the cylinder assembly alternately intake and exhaust air at a set frequency, thereby realizing the telescopic action of the cylinder assembly, and the output shaft outputs alternating torque through the driving arm. By recording the operating time or telescopic times of the cylinder assembly or the reversing times of the pneumatic valve 12, the torque endurance test of the shift element assembly, that is, the anti-torsion fatigue test, is completed.

[0060] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0061] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0062] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A torque endurance test fixture, suitable for torque detection of a workpiece assembly, wherein the workpiece assembly comprises a rotating shaft portion and a rotating shaft connecting portion, wherein the rotating shaft portion and the rotating shaft connecting portion are fixedly connected, and wherein: The torque endurance test tool comprises: The workpiece fixing mechanism is provided with a clamping portion, and the clamping portion is used to clamp and fix the rotating shaft connecting portion; The torsion drive mechanism is provided with an output shaft, wherein the output shaft is used to be fixedly connected to the rotating shaft portion and output an alternating torque to the rotating shaft portion through the reciprocating rotation of the output shaft.

2. The torque endurance test fixture according to claim 1, characterized in that: The torsion drive mechanism further comprises: A shaft seat for rotational connection of the output shaft; A connecting block, disposed at the end of the output shaft and used to coaxially connect the output shaft and the rotating shaft; A driving arm, fixedly connected to the periphery of the output shaft; The output end of the cylinder assembly is hinged to an end of the driving arm away from the output shaft.

3. The torque endurance test tool according to claim 2, characterized in that: The torsion drive mechanism is provided with a torque sensor for detecting the output torque of the output shaft.

4. The torque endurance test tool according to claim 2, characterized in that: The driving arm comprises a first driving arm and a second driving arm, wherein the first driving arm and the second driving arm are symmetrically connected to the output shaft; The cylinder assembly includes a first cylinder and a second cylinder. The output end of the first cylinder is hinged to the first driving arm, and the output end of the second cylinder is hinged to the second driving arm.

5. The torque endurance test tool according to claim 2, characterized in that: The output end of the cylinder assembly is provided with a joint bearing and a switching shaft, and the switching shaft is hinged to the driving arm.

6. The torque endurance test tool according to any one of claims 1 to 5, characterized in that: The workpiece fixing mechanism also includes: Fixed vertical board; The fixing plate is connected to the fixing vertical plate in a lifting manner, and the clamping part is arranged on the fixing plate.

7. The torque endurance test tool according to claim 6, characterized in that: The fixing plate is connected with a positioning plate, the positioning plate is provided with a positioning hole, and the positioning hole is provided with a bearing / bushing adapted to the rotating shaft portion.

8. The torque endurance test tool according to claim 6, characterized in that: The clamping portion includes a locking block and a locking bolt. The locking block is provided with a locking groove for accommodating the rotating shaft connecting portion. The locking bolt extends through the locking groove and is used to abut and press the rotating shaft connecting portion.

9. The torque endurance test tool according to claim 1 or 2, characterized in that: It also includes a tooling base plate, and the workpiece fixing mechanism and the torsion driving mechanism are both arranged on the tooling base plate.

10. The torque endurance test tool according to claim 9, characterized in that: It also includes a moving frame, the tooling base plate is mounted on the moving frame, and when the torsion drive mechanism includes a cylinder assembly, the moving frame is provided with a pneumatic valve connected to the cylinder assembly.

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