Motor torsion testing device

Abstract

The invention relates to the technical field of motor testing, and discloses a motor torsion testing device, which comprises a mounting seat, a transmission shaft, a torque wrench and an adjusting assembly, and is characterized in that the transmission shaft is rotationally connected with the mounting seat; the first end of the transmission shaft is fixedly connected with a first friction plate, the second end of the transmission shaft is fixedly connected with a flange plate, the torque wrench is detachably connected with the flange plate, and the flange plate is used for being assembled and connected with a to-be-tested motor after the torque wrench is separated from the flange plate; a guide rod extending in the first direction is arranged on the side, away from the flange plate, of the mounting base, a second friction plate is slidably connected to the guide rod, and the second friction plate abuts against the first friction plate; the adjusting assembly is used for driving the second friction plate to move in the direction close to or away from the first friction plate so as to adjust the friction force of the second friction plate and the first friction plate. According to the invention, the technical problem that the current loading torque testing equipment cannot adjust the operation conditions of the motor under different torque loads is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor testing, and in particular to a motor torque testing device. Background Art

[0002] As the core component of power conversion and transmission, the motor has been applied in many fields such as industry, agriculture, transportation, aerospace and daily life. In certain specific application scenarios, such as heavy machinery manufacturing, precision processing equipment and electric vehicle drive systems, the motor needs to withstand a large workload, so there are strict requirements on the torque parameters of the motor. In order to ensure that the motor can operate stably and efficiently, the torque size of the motor under load conditions and its continuous working ability must be accurately measured.

[0003] The traditional method of testing motor torque is to apply a preset load to the motor to simulate the actual working conditions, and then measure and record the motor's torque output and operating conditions. However, current test equipment cannot adjust the motor's operating conditions under different torque loads. Summary of the invention

[0004] The object of the present invention is to provide a motor torque testing device to solve the technical problem that the current load torque testing equipment cannot adjust the operating conditions of the motor under different torque loads.

[0005] In order to achieve the above-mentioned object, the present invention provides a motor torque testing device, which comprises a mounting seat, a transmission shaft, a torque wrench and an adjustment assembly, wherein the transmission shaft is mounted on the mounting seat along a first direction, and the transmission shaft is rotatably connected to the mounting seat;

[0006] A first friction plate is fixedly connected to the first end of the transmission shaft, a flange is fixedly connected to the second end of the transmission shaft, the torque wrench is detachably connected to the flange, and the flange is used to be assembled and connected to the motor to be tested after the torque wrench is separated from the flange;

[0007] A guide rod extending along the first direction is provided on one side of the mounting seat away from the flange, a second friction plate is slidably connected to the guide rod, and the second friction plate abuts against the first friction plate;

[0008] The adjusting component is used to drive the second friction plate to move toward or away from the first friction plate, so as to adjust the friction force between the second friction plate and the first friction plate.

[0009] Optionally, the adjustment assembly includes an elastic member and a tensioning block, one end of the elastic member abuts against the second friction plate, and one end of the elastic member away from the second friction plate abuts against the tensioning block.

[0010] Optionally, the second friction plate is provided with a first center hole and a first guide hole, the first end of the transmission shaft is passed through the first center hole, and the guide rod is passed through the first guide hole;

[0011] The elastic member comprises a spring, the spring is sleeved on the transmission shaft, and two ends of the spring are respectively in contact with the second friction plate and the tension block.

[0012] Optionally, a first mounting groove is provided on a side of the second friction plate facing the spring, a second mounting groove is provided on a side of the tensioning block facing the spring, and two ends of the spring are respectively embedded in the first mounting groove and the second mounting groove.

[0013] Optionally, the adjustment assembly also includes a fastener; the tensioning block is provided with a second center hole and a second guide hole, the first end of the transmission shaft is passed through the second center hole, the guide rod is passed through the second guide hole and is fastened to the fastener.

[0014] Optionally, a first mounting hole and a second mounting hole are respectively provided on opposite sides of the mounting seat, the first end of the transmission shaft is passed through the first mounting hole and fixedly connected to the first friction plate, and the second end of the transmission shaft is passed through the second mounting hole and fixedly connected to the flange.

[0015] Optionally, a bearing is installed in the first mounting hole, and the transmission shaft passes through the bearing and is rotatably connected to the mounting seat.

[0016] Optionally, the transmission shaft includes a first shaft body and a second shaft body connected to the first shaft body, and a mounting block is fixed between the first shaft body and the second shaft body;

[0017] The first shaft extends toward the direction of the first friction plate, and the first friction plate is fixedly connected to the mounting block; the second shaft extends toward the direction of the flange and is fixedly connected to the flange.

[0018] Optionally, the motor torque testing device further comprises a sleeve adapter, the sleeve adapter is detachably connected to the flange, and the torque wrench is detachably connected to the sleeve adapter.

[0019] Optionally, the motor torque testing device further comprises a latch;

[0020] The second shaft body is provided with a first connecting hole, the main shaft of the flange is provided with a second connecting hole, the main shaft of the flange is sleeved in the second shaft body, and the latch is inserted in the first connecting hole and the second connecting hole.

[0021] The present invention provides a motor torque testing device, which has the following beneficial effects:

[0022] The motor torque test device of the present invention comprises a mounting seat, a transmission shaft, a torque wrench and an adjustment component. The torque wrench is first connected to the flange, the torque wrench is rotated, and a certain torque is applied to the transmission shaft. Then, according to the test requirements of the motor to be tested, the position of the second friction plate relative to the first friction plate is adjusted by the adjustment component, so that the second friction plate moves in a direction close to or away from the first friction plate, and then the friction between the second friction plate and the first friction plate is adjusted, so that the torque applied by the torque wrench reaches a preset torque value. Then, the connection between the torque wrench and the flange is released, the motor to be tested is assembled and connected with the flange, and the motor is started. The motor transmits the output torque to the transmission shaft through the flange, and then to the first friction plate, so that the first friction plate rotates, and the motor continues to operate under the preset torque value condition. Repeat the above operation, adjust the position of the second friction plate by the adjustment component, and then adjust the friction between the second friction plate and the first friction plate, simulate the operating conditions of the motor under different torque loads, thereby evaluating the performance of the motor and realizing the test of the motor under different torque loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the structure of a motor torque testing device provided by an embodiment of the present invention;

[0025] Figure 2 Another structural schematic diagram of a motor torque testing device provided by an embodiment of the present invention;

[0026] Figure 3 An exploded schematic diagram of a motor torque testing device provided by an embodiment of the present invention;

[0027] Figure 4 A cross-sectional view of a motor torque testing device provided by an embodiment of the present invention;

[0028] Figure 5 for Figure 4 Schematic diagram of the explosion from another perspective;

[0029] Figure 6 Another exploded schematic diagram of the motor torque testing device provided by an embodiment of the present invention.

[0030] The markings in the figure are as follows: 1. mounting seat; 11. first mounting hole; 12. second mounting hole; 13. bearing; 2. transmission shaft; 21. first shaft body; 22. second shaft body; 221. first connecting hole; 23. mounting block; 3. torque wrench; 4. adjustment assembly; 41. elastic member; 42. tensioning block; 421. second mounting slot; 422. second center hole; 423. second guide hole; 43. fastener; 5. first friction plate; 6. flange; 61. main shaft; 62. second connecting hole; 7. guide rod; 8. second friction plate; 81. first center hole; 82. first guide hole; 83. first mounting slot; 9. sleeve adapter; 10. latch; 100. motor torque test device; 200. motor; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. used in the present invention to indicate the orientation or positional relationship are based on the positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be understood that the present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0034] like Figures 1 to 4As shown, an embodiment of the present invention provides a motor torque testing device 100, comprising a mounting seat 1, a transmission shaft 2, a torque wrench 3 and an adjusting assembly 4, wherein the transmission shaft 2 is mounted on the mounting seat 1 along a first direction X, and the transmission shaft 2 is rotatably connected to the mounting seat 1; a first friction plate 5 is fixedly connected to a first end of the transmission shaft 2, a flange 6 is fixedly connected to a second end of the transmission shaft 2, the torque wrench 3 is detachably connected to the flange 6, and the flange 6 is used to be assembled and connected to the motor 200 to be tested after the torque wrench 3 is separated from the flange 6; a guide rod 7 extending along the first direction X is provided on a side of the mounting seat 1 away from the flange 6, a second friction plate 8 is slidably connected to the guide rod 7, and the second friction plate 8 abuts against the first friction plate 5; wherein the adjusting assembly 4 is used to drive the second friction plate 8 to move in a direction close to or away from the first friction plate 5, so as to adjust the friction between the second friction plate 8 and the first friction plate 5.

[0035] In this embodiment, the motor torque test device 100 has a first direction X and a second direction Y. The first direction X is the front-to-back direction when the motor torque test device 100 is assembled and connected to the motor 200. The second direction Y is the left-to-right direction when the motor torque test device 100 is assembled and connected to the motor 200.

[0036] The mounting seat 1 is a supporting component of the motor torque test device, and is used to carry the transmission shaft 2, the adjustment component 4 and the motor 200 to be tested. The transmission shaft 2 can rotate freely on the mounting seat 1, the first friction plate 5 is fixedly connected to the first end of the transmission shaft 2, and rotates with the rotation of the transmission shaft 2, and the second friction plate 8 is slidably connected to the mounting seat 1 through the guide rod 7. The second friction plate 8 can move along the guide rod 7 toward or away from the first friction plate 5, so as to adjust the friction between the second friction plate 8 and the first friction plate 5.

[0037] The flange 6 is fixedly connected to the second end of the transmission shaft 2. When the torque wrench 3 is connected to the flange 6, a certain torque can be applied to the transmission shaft 2 through the torque wrench 3. When the torque wrench 3 is separated from the flange 6, the motor 200 to be tested is assembled and connected to the flange 6, and the motor 200 is started to transmit the output torque of the motor 200 to the transmission shaft 2. In this embodiment, the torque wrench 3 is a common torque measurement tool. By applying torque to the torque wrench 3, the current torque value can be measured and recorded.

[0038] Based on the above technical solution, when in use, first connect the torque wrench 3 with the flange 6, rotate the torque wrench 3, apply a certain torque to the transmission shaft 2, and then adjust the position of the second friction plate 8 relative to the first friction plate 5 through the adjustment component 4 according to the test requirements of the motor 200 to be tested, so that the second friction plate 8 moves in the direction close to or away from the first friction plate 5, and then adjust the friction between the second friction plate 8 and the first friction plate 5, so that the torque applied by the torque wrench 3 reaches the preset torque value. Then, release the connection between the torque wrench 3 and the flange 6, assemble and connect the motor 200 to be tested with the flange 6, start the motor 200, and the motor 200 transmits the output torque to the transmission shaft 2 through the flange 6, and then transmits it to the first friction plate 5, so that the first friction plate 5 rotates, and the motor 200 continues to operate under the working condition of the preset torque value.

[0039] In some embodiments, the torque wrench 3 is rotated, and the second friction plate 8 is adjusted to the first position and rubbed against the first friction plate 5 by the adjustment component 4 until the torque applied by the torque wrench 3 reaches the first torque value; then the torque wrench 3 is released, and the motor 200 is assembled to the flange 6, so that the motor 200 continues to operate under the working condition of the first torque value, and the operating data of the motor 200 under the working condition of the first torque value is recorded. Repeat the above operation, adjust the second friction plate 8 to the second position and rub against the first friction plate 5, until the torque applied by the torque wrench 3 reaches the second torque value, so that the motor 200 continues to operate under the working condition of the second torque value. In this embodiment, the position of the second friction plate 8 is adjusted by the adjustment component 4, and then the friction between the second friction plate 8 and the first friction plate 5 is adjusted, so as to simulate the operating conditions of the motor 200 under different torque loads, thereby evaluating the performance of the motor 200 and realizing the test of the motor 200 under different torque loads.

[0040] For example, after the torque wrench 3 is connected to the flange 6, the torque wrench 3 is rotated, and the friction between the second friction plate 8 and the first friction plate 5 is adjusted by the adjustment component 4, so that the torque applied by the torque wrench 3 reaches 50Nm. Then the torque wrench 3 is disassembled, the motor 200 to be tested is assembled and connected to the flange 6, and the motor 200 is started, so that the motor 200 operates under the condition of a torque value of 50Nm. If the operating condition of the motor 200 is to be adjusted, the above operation is repeated, and the friction between the second friction plate 8 and the first friction plate 5 is adjusted again, so that the motor 200 operates under another torque value condition.

[0041] In one embodiment, if Figures 3 to 5 As shown, the adjustment assembly 4 includes an elastic member 41 and a tension block 42 . One end of the elastic member 41 abuts against the second friction plate 8 , and the end of the elastic member 41 away from the second friction plate 8 abuts against the tension block 42 .

[0042] Specifically, the elastic member 41 is used to provide elastic force, and the elastic member 41 abuts against the second friction plate 8, so that the second friction plate 8 can maintain stable contact with the first friction plate 5. When the first friction plate 5 rotates relative to the second friction plate 8, the two rub against each other and generate friction force. In this embodiment, the elastic member 41 can be made of a spring, rubber or other material with elastic restoring force.

[0043] Furthermore, the tension block 42 abuts against the elastic member 41. By applying an external force to the tension block 42, the tension block 42 pushes the elastic member 41 to cause the elastic member 41 to produce compression deformation, thereby changing the preload force of the elastic member 41, and further adjusting the contact pressure and friction between the second friction plate 8 and the first friction plate 5. It can be understood that when the tension block 42 moves toward the direction close to the second friction plate 8, the elastic member 41 is squeezed and further abuts against the second friction plate 8, increasing the friction between the second friction plate 8 and the first friction plate 5. When the tension block 42 moves toward the direction away from the second friction plate 8, the elastic member 41 is released, reducing the friction between the second friction plate 8 and the first friction plate 5, so that the size of the preset torque value can be adjusted.

[0044] The tension block 42 may be made of metal, plastic or other solid materials, and this embodiment does not impose any specific limitation thereto.

[0045] In one embodiment, if Figure 3 and Figure 5 As shown, the second friction plate 8 is provided with a first center hole 81 and a first guide hole 82, the first end of the transmission shaft 2 is passed through the first center hole 81, and the guide rod 7 is passed through the first guide hole 82; the elastic member 41 includes a spring, the spring is sleeved on the transmission shaft 2, and the two ends of the spring are respectively abutted against the second friction plate 8 and the tensioning block 42.

[0046] Specifically, the first center hole 81 is a through hole at the center of the second friction plate 8, the first guide hole 82 is spaced apart from the first center hole 81, the transmission shaft 2 passes through the first center hole 81 and the guide rod 7 passes through the first guide hole 82, and the second friction plate 8 can slide on the transmission shaft 2 along the first direction X without rotating.

[0047] When in use, an external force is applied to the tension block 42, and the tension block 42 pushes the spring, the spring is compressed and deformed, and the spring abuts against the second friction plate 8, thereby adjusting the friction between the second friction plate 8 and the first friction plate 5. Due to the joint limiting effect of the first center hole 81 and the first guide hole 82, the second friction plate 8 is prevented from rotating, that is, the position of the second friction plate 8 is relatively fixed after adjustment. The first friction plate 5 rotates relative to the second friction plate 8, so that the motor 200 runs at a preset torque value.

[0048] In this embodiment, the spring sleeve is arranged on the transmission shaft 2. During the compression and deformation process of the spring, the spring is prevented from deviating from the first direction X, and the spring is prevented from twisting or offsetting during the force application process to cause the preset torque value to change, thereby ensuring that the motor 200 continues to operate at the preset torque value.

[0049] For example, after the torque wrench 3 is connected to the flange 6, the torque wrench 3 is rotated, and the spring is pushed through the tensioning block 42 to adjust the compression of the spring, thereby adjusting the friction between the second friction plate 8 and the first friction plate 5, so that the torque applied by the torque wrench 3 reaches 50Nm, and the motor 200 is replaced so that the motor 200 operates under the working condition of a torque value of 50Nm.

[0050] In one embodiment, if Figure 3 and Figure 5 As shown, the first center hole 81 is arranged at the center of the second friction plate 8, and two first guide holes 82 are arranged on the left and right sides of the first center hole 81 along the second direction Y. The mounting seat 1 is provided with two guide rods 7, and each guide rod 7 is correspondingly penetrated into each first guide hole 82, so as to limit the second friction plate 8 to slide on the guide rod 7 only along the first direction X, thereby preventing the second friction plate 8 from rotating around the transmission shaft 2.

[0051] In one embodiment, if Figure 3 and Figure 5 As shown, the second friction plate 8 is provided with a first mounting groove 83 on the side facing the spring, the tension block 42 is provided with a second mounting groove 421 on the side facing the spring, and both ends of the spring are respectively embedded in the first mounting groove 83 and the second mounting groove 421.

[0052] Specifically, the first mounting groove 83 is located at the center of the second friction plate 8 and is connected to the first center hole 81. One end of the spring is embedded in the first mounting groove 83 of the second friction plate 8, and the other end of the spring is embedded in the second mounting groove 421 of the tensioning block 42 to prevent the spring from falling off the second friction plate 8 and the tensioning block 42 when pushed or squeezed by the tensioning block 42.

[0053] In one embodiment, if Figures 3 to 5 As shown, the adjustment assembly 4 also includes a fastener 43; the tensioning block 42 is provided with a second center hole 422 and a second guide hole 423, the first end of the transmission shaft 2 is passed through the second center hole 422, and the guide rod 7 is passed through the second guide hole 423 and is fastened to the fastener 43.

[0054] Specifically, the guide rod 7 passes through the first guide hole 82 and the second guide hole 423 , so that the tensioning block 42 and the second friction plate 8 are slidably connected to the guide rod 7 , and the positions of the tensioning block 42 and the second friction plate 8 on the guide rod 7 are adjusted.

[0055] During adjustment, the fastener 43 is tightened or loosened on the guide rod 7, so that the tension block 42 moves toward or away from the second friction plate 8. Specifically, when the fastener 43 is further tightened, the tension block 42 moves toward the second friction plate 8, so that the spring is further compressed and deformed, and the spring further abuts against the second friction plate 8, increasing the friction between the second friction plate 8 and the first friction plate 5, thereby increasing the preset torque value; when the fastener 43 is loosened, the tension block 42 moves toward the direction away from the second friction plate 8, releasing the spring, reducing the friction between the second friction plate 8 and the first friction plate 5, thereby reducing the preset torque value.

[0056] In one embodiment, a threaded structure is provided on the outer periphery of one end of the guide rod 7 facing the tensioning block 42, and the fastener 43 is a nut. The friction force between the second friction plate 8 and the first friction plate 5 is adjusted by threaded cooperation between the nut and the threaded structure of the guide rod 7, and the operation is simple and convenient.

[0057] In one embodiment, if Figure 3 As shown, the mounting base 1 is provided with two guide rods 7, the fastener 43 includes two nuts, the second friction plate 8 is provided with two first guide holes 82, the tensioning block 42 is provided with two second guide holes 423, each guide rod 7 is correspondingly penetrated into each first guide hole 82 and second guide hole 423, each nut is correspondingly threadedly connected with each guide rod 7, thereby realizing the sliding connection between the second friction plate 8 and the guide rod 7, and the friction force between the second friction plate 8 and the first friction plate 5 is adjusted by the two nuts.

[0058] In one embodiment, if Figure 6 As shown, a first mounting hole 11 and a second mounting hole 12 are respectively provided on opposite sides of the mounting seat 1, the first end of the transmission shaft 2 is passed through the first mounting hole 11 and is fixedly connected to the first friction plate 5, and the second end of the transmission shaft 2 is passed through the second mounting hole 12 and is fixedly connected to the flange 6.

[0059] Specifically, the first end of the transmission shaft 2 is passed through the first mounting hole 11 and fixedly connected with the first friction plate 5 by bolt connection. The second end of the transmission shaft 2 is passed through the second mounting hole 12 and fixedly connected with the flange 6 by bolt connection, welding or thread connection, and the transmission shaft 2 can stably support the first friction plate 5 and the flange 6. When the torque is applied to the flange 6 by the torque wrench 3, the transmission shaft 2 drives the first friction plate 5 to rotate together, so that the first friction plate 5 and the second friction plate 8 generate friction. The torque wrench 3 is disassembled and the motor 200 is assembled and connected to the flange 6. The motor 200 drives the flange 6 to rotate, and the operating condition of the motor 200 under the preset torque value is tested.

[0060] In one embodiment, if Figure 4 and Figure 6As shown, a bearing 13 is installed in the first mounting hole 11 , and the transmission shaft 2 passes through the bearing 13 and is rotatably connected to the mounting seat 1 .

[0061] Specifically, the bearing 13 is fixedly installed in the first mounting hole 11, and the transmission shaft 2 is rotatably installed on the bearing 13. The transmission shaft 2 is rotationally connected to the mounting seat 1 through the bearing 13. The transmission shaft 2 rotates smoothly relative to the mounting seat 1 under the low friction condition of the bearing 13, thereby improving the overall performance and accuracy of the motor torque testing device 100.

[0062] In one embodiment, if Figure 6 As shown, the transmission shaft 2 includes a first shaft body 21 and a second shaft body 22 connected to the first shaft body 21, and a mounting block 23 is fixed between the first shaft body 21 and the second shaft body 22; the first shaft body 21 extends toward the direction of the first friction plate 5, and the first friction plate 5 is fixedly connected to the mounting block 23; the second shaft body 22 extends toward the direction of the flange 6 and is fixedly connected to the flange 6.

[0063] Specifically, the first friction plate 5 is provided with a plurality of first threaded holes spaced around the transmission shaft 2, and the mounting block 23 is provided with a plurality of second threaded holes spaced around the transmission shaft 2, and screws are passed through the first threaded holes and the second threaded holes (not shown in the drawings) to fix the first friction plate 5 and the mounting block 23. The first shaft body 21, the second shaft body 22 and the mounting block 23 may be an integrally formed structure.

[0064] In this embodiment, the spring is sleeved on the first shaft body 21, the first shaft body 21 is provided with a first central hole 81 of the second friction plate 8, and the second friction plate 8 slides along the first shaft body 21. The second shaft body 22 is rotatably mounted on the bearing 13, and the flange 6 drives the second shaft body 22, the mounting block 23 and the first friction plate 5 to rotate, so as to realize the rotation of the first friction plate 5 relative to the second friction plate 8, so that the motor 200 operates under the preset torque value.

[0065] In one embodiment, if Figure 4 As shown, the motor torque testing device 100 further includes a sleeve adapter 9 , the sleeve adapter 9 is detachably connected to the flange 6 , and the torque wrench 3 is detachably connected to the sleeve adapter 9 .

[0066] Specifically, since the connection part of the torque wrench 3 cannot be directly docked and fixed with the flange 6, the present embodiment assembles and fixes the sleeve adapter 9 with the flange 6, and then assembles and fixes the torque wrench 3 with the sleeve adapter 9, so as to realize the detachable connection between the flange 6 and the torque wrench 3. Among them, the sleeve adapter 9 and the flange 6 can be detachably connected by bolt connection. In order to adapt to different models of torque wrenches 3, the connection part of the sleeve adapter 9 can be designed into a variety of specifications and sizes to meet different testing requirements.

[0067] In one embodiment, if Figure 6 As shown, the motor torque testing device 100 also includes a latch 10; the second shaft 22 is provided with a first connecting hole 221, the main shaft 61 of the flange 6 is provided with a second connecting hole 62, the main shaft 61 of the flange 6 is sleeved in the second shaft 22, and the latch 10 is inserted in the first connecting hole 221 and the second connecting hole 62.

[0068] Specifically, the main shaft 61 of the flange 6 is sleeved in the second shaft body 22, and the relative position between the flange 6 and the second shaft body 22 is fixed by the latch 10. Further, the latch 10 is inserted in the first connection hole 221 and the second connection hole 62, so as to realize the firm connection between the second shaft body 22 and the flange 6, so that the flange 6 is fixedly connected to the transmission shaft 2, and the transmission shaft 2 can rotate with the rotation of the flange 6.

[0069] In one embodiment, a locking structure (not shown in the drawings) is provided on the latch 10 to prevent the latch 10 from loosening due to vibration or impact during the test. The locking structure may include an elastic locking piece, a threaded locking portion, etc. provided on the latch 10. When the latch 10 is inserted into the first connection hole 221 and the second connection hole 62, the locking structure can lock the latch 10, thereby ensuring the stability and reliability of the connection between the flange 6 and the transmission shaft 2.

[0070] It should be understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations. It should be noted that, in this article, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "including a..." does not exclude the presence of other identical elements in the process, method, article or system including the element.

[0071] The serial numbers of the embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments. The protection scope of the present invention is not limited thereto, and any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention.

Claims

1. A motor torque testing device, characterized in that: It comprises a mounting seat, a transmission shaft, a torque wrench and an adjustment assembly, wherein the transmission shaft is mounted on the mounting seat along a first direction, and the transmission shaft is rotatably connected to the mounting seat; A first friction plate is fixedly connected to the first end of the transmission shaft, a flange is fixedly connected to the second end of the transmission shaft, the torque wrench is detachably connected to the flange, and the flange is used to be assembled and connected to the motor to be tested after the torque wrench is separated from the flange; A guide rod extending along the first direction is provided on one side of the mounting seat away from the flange, a second friction plate is slidably connected to the guide rod, and the second friction plate abuts against the first friction plate; The adjusting component is used to drive the second friction plate to move toward or away from the first friction plate, so as to adjust the friction force between the second friction plate and the first friction plate.

2. The motor torque testing device according to claim 1, characterized in that: The adjustment assembly includes an elastic member and a tension block. One end of the elastic member abuts against the second friction plate, and one end of the elastic member away from the second friction plate abuts against the tension block.

3. The motor torque testing device according to claim 2, characterized in that: The second friction plate is provided with a first center hole and a first guide hole, the first end of the transmission shaft is passed through the first center hole, and the guide rod is passed through the first guide hole; The elastic member comprises a spring, the spring is sleeved on the transmission shaft, and two ends of the spring are respectively in contact with the second friction plate and the tension block.

4. The motor torque testing device according to claim 3, characterized in that: A first mounting groove is provided on a side of the second friction plate facing the spring, a second mounting groove is provided on a side of the tensioning block facing the spring, and two ends of the spring are respectively embedded in the first mounting groove and the second mounting groove.

5. The motor torque testing device according to claim 3, characterized in that: The adjustment assembly also includes a fastener; the tension block is provided with a second center hole and a second guide hole, the first end of the transmission shaft is passed through the second center hole, the guide rod is passed through the second guide hole and is fastened to the fastener.

6. The motor torque testing device according to claim 1, characterized in that: A first mounting hole and a second mounting hole are respectively provided on opposite sides of the mounting seat, the first end of the transmission shaft is passed through the first mounting hole and fixedly connected to the first friction plate, and the second end of the transmission shaft is passed through the second mounting hole and fixedly connected to the flange.

7. The motor torque testing device according to claim 6, characterized in that: A bearing is installed in the first installation hole, and the transmission shaft passes through the bearing and is rotatably connected to the installation seat.

8. The motor torque testing device according to claim 7, characterized in that: The transmission shaft comprises a first shaft body and a second shaft body connected to the first shaft body, and a mounting block is fixed between the first shaft body and the second shaft body; The first shaft extends toward the direction of the first friction plate, and the first friction plate is fixedly connected to the mounting block; the second shaft extends toward the direction of the flange and is fixedly connected to the flange.

9. The motor torque testing device according to claim 8, characterized in that: The motor torque testing device further comprises a sleeve adapter, the sleeve adapter is detachably connected to the flange, and the torque wrench is detachably connected to the sleeve adapter.

10. The motor torque testing device according to claim 9, characterized in that: The motor torque testing device also includes a latch; The second shaft body is provided with a first connecting hole, the main shaft of the flange is provided with a second connecting hole, the main shaft of the flange is sleeved in the second shaft body, and the latch is inserted in the first connecting hole and the second connecting hole.

Images