A motor drive shaft torsional strength detection device

Abstract

The utility model discloses a motor transmission shaft torsional strength detection device, including work table, the work table is fixedly installed with main control unit, the work table is fixedly installed with drive mechanism close to the main control unit department, and drive mechanism is electrically connected with main control unit through cable, the work table of drive mechanism one side still is fixedly installed with support seat, the work table of support seat one side still is fixedly installed with the sliding platform, and load equipment is fixedly installed in sliding platform one side, and load equipment is electrically connected with main control unit through cable. One clamp is arranged respectively in the output of drive mechanism and one end of load equipment, can carry out fixed torsion test to the axle, and the clamp still has connecting seat, shaft sleeve, mounting block, limit axle etc. structure, can according to the demand fastly change and open the second key groove of different size or structure, to adapt to different diameter and model transmission shaft, improve the adaptability of clamp.

Description

Technical Field

[0001] This utility model relates to the technical field of torsion testing equipment, and in particular to a device for testing the torsional strength of a motor drive shaft. Background Technology

[0002] The torsion test of a motor drive shaft involves applying torque to the drive shaft and measuring its various properties under stress. During the test, the two ends of the drive shaft are clamped by equipment, and force is slowly applied until it deforms or breaks. The maximum torque and torsion angle are recorded during the process to determine the torsional strength, stiffness, and other data of the drive shaft.

[0003] In existing technologies, for example, a torsional strength testing device for a motor drive shaft disclosed in Chinese Utility Model Patent (authorization announcement number CN217505502U) can easily fix the drive shaft to a manual three-jaw chuck by setting an adjustment device. A prism is set at one end of the torsion testing component, which engages with the drive shaft during operation, preventing rotation of the drive shaft during testing. However, in this testing device, one end of the drive shaft is connected to the prism, while the other end is clamped by the three-jaw chuck. Since the test is a torsion test, when the three-jaw chuck clamps one end of the drive shaft and drives it to rotate, and the outer surface of the drive shaft is relatively smooth, the three-jaw chuck will slip on the drive shaft when the torsion reaches a certain value, resulting in insufficient clamping force and affecting the test process. Furthermore, like existing torsion testing machines, this testing device cannot quickly change the limiting fixture for shafts with different synchronous diameters when performing torsion tests on different drive shafts, resulting in low adaptability of existing torsion testing fixtures. Utility Model Content

[0004] The purpose of this invention is to provide a device for testing the torsional strength of a motor drive shaft, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A device for testing the torsional strength of a motor drive shaft includes a worktable. A main controller is fixedly mounted on the worktable. A drive mechanism is fixedly mounted on the worktable near the main controller and is electrically connected to the main controller via a cable. A support base is also fixedly mounted on the worktable next to the drive mechanism. A sliding platform is also fixedly mounted on the worktable next to the support base. A load device is fixedly mounted on one side of the sliding platform and is electrically connected to the main controller via a cable. A clamp is fixedly mounted at the output end of the drive mechanism and at one end of the load device. The clamp includes a connecting seat. One side of the connecting seat is fixedly mounted at the output end of the drive mechanism or on the side of the sliding platform. A bushing is movably mounted inside the connecting seat. Two mounting slots are formed on one side of the connecting seat. Mounting blocks are fixedly mounted in the mounting slots, and limit shafts are movably mounted in the mounting blocks.

[0007] As a further preferred embodiment of this utility model, a first keyway is provided in the connecting seat, and a countersunk groove is provided on the inner side of the first keyway. The first keyway can realize the assembly of the bushing, and different bushings can be replaced as needed.

[0008] As a further preferred embodiment of this utility model, a first compression spring is fixedly connected inside the sink groove. When the two limiting shafts release the limiting force on the bushing, the bushing can be pushed a certain distance in the first keyway by the extension and rebound force of the first compression spring, so as to facilitate the removal of the bushing from the first keyway.

[0009] As a further preferred embodiment of this utility model, a second keyway is provided inside the bushing. The diameter of the second keyway is different in different bushings. In addition, other structural cavities can be provided to adapt to motor shafts of different sizes and diameters. Multiple key blocks are fixedly installed on the outside of the bushing. A limit groove is provided on one side of the key block. The bushing is installed in the first keyway through the multiple key blocks on the outside.

[0010] As a further preferred embodiment of this utility model, the mounting block has a countersunk hole, and a spiral groove is formed inside the countersunk hole. The mounting block provides conditions for the installation of the limiting shaft, while the spiral groove provides guiding conditions for the rotation of the limiting shaft.

[0011] As a further preferred embodiment of this utility model, a spiral guide block is fixedly installed on the outer side of the limiting shaft, and a top rod is fixedly installed on the top of the limiting shaft. The top of the top rod extends through the countersunk hole to the position above the mounting block, and a pull rod is fixedly connected between the two top rods. A second compression spring is also fitted on the top rod located between the top of the countersunk hole and the limiting shaft. The limiting shaft is spirally connected to the countersunk hole through the spiral guide block. The limiting shaft can be inserted into the corresponding limiting groove with the help of the force of the second compression spring, thereby limiting the bushing in the first keyway. At the same time, rotating the pull rod can synchronously cooperate with the two top rods to make the two limiting shafts rotate in the corresponding countersunk holes, so that one end of the limiting shaft can be disengaged from the corresponding limiting groove, and the bushing can be quickly removed for replacement.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this utility model, a clamp is set at the output end of the drive mechanism and one end of the load device, respectively, so as to perform a fixed torsion test on the shaft. The clamp also has a connecting seat, bushing, mounting block, limit shaft and other structures, which can be quickly replaced with a second keyway of different size or structure according to the needs, so as to adapt to the drive shaft of different diameter and model and improve the adaptability of the clamp. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the clamp structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the disassembled fixture structure of this utility model;

[0017] Figure 4 This is a cross-sectional view of the mounting block of this utility model.

[0018] In the diagram: 1. Workbench; 2. Main controller; 3. Drive mechanism; 4. Support base; 5. Sliding platform; 6. Loading device; 7. Fixture; 8. Connecting seat; 9. Bushing; 10. Mounting slot; 11. Mounting block; 12. Limiting shaft; 13. First keyway; 14. Countersunk groove; 15. First compression spring; 16. Key block; 17. Limiting slot; 18. Second keyway; 19. Countersunk hole; 20. Spiral groove; 21. Spiral guide block; 22. Push rod; 23. Second compression spring; 24. Pull rod. Detailed Implementation

[0019] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figures 1-4 As shown, the present invention provides a motor drive shaft torsional strength testing device, including a workbench 1, a main controller 2 fixedly installed on the workbench 1, a drive mechanism 3 fixedly installed on the workbench 1 near the main controller 2, and the drive mechanism 3 electrically connected to the main controller 2 via a cable. A support base 4 is also fixedly installed on one side of the workbench 1 located on the drive mechanism 3, and a sliding platform 5 is also fixedly installed on one side of the workbench 1 located on the support base 4. A load device 6 is fixedly installed on one side of the sliding platform 5, and the load device 6 is electrically connected to the main controller 2 via a cable. A clamp 7 is fixedly installed at the output end of the drive mechanism 3, and a clamp 7 is also fixedly installed at one end of the load device 6. The clamp 7 includes a connecting seat 8, one side of which is fixedly installed at the output end of the drive mechanism 3 or on one side of the sliding platform 5. A bushing 9 is movably installed in the connecting seat 8. Two mounting slots 10 are opened on one side of the connecting seat 8. A mounting block 11 is fixedly installed in the mounting slot 10, and a limit shaft 12 is movably installed in the mounting block 11.

[0021] like Figures 2-3 As shown, a first keyway 13 is provided in the connecting seat 8, and a recessed groove 14 is provided inside the first keyway 13. The first keyway 13 can realize the assembly of the bushing 9, and different bushings 9 can be replaced as needed. A first compression spring 15 is fixedly connected in the recessed groove 14. When the two limiting shafts 12 release the bushing 9, the bushing 9 can be pushed a certain distance in the first keyway 13 by means of the extension and rebound force of the first compression spring 15, so that the bushing 9 can be removed from the first keyway 13. A second keyway 18 is provided in the bushing 9. The diameter of the second keyway 18 in different bushings 9 is different. In addition, other structural cavities can be set to adapt to motor shafts of different sizes and diameters. Multiple key blocks 16 are fixedly installed on the outside of the bushing 9. A limiting groove 17 is provided on one side of the key block 16. The bushing 9 is installed in the first keyway 13 through the multiple key blocks 16 on the outside.

[0022] like Figures 3-4As shown, a countersunk hole 19 is provided in the mounting block 11, and a spiral groove 20 is provided inside the countersunk hole 19. The mounting block 11 provides conditions for the installation of the limiting shaft 12, while the spiral groove 20 provides guidance for the rotation of the limiting shaft 12. A spiral guide block 21 is fixedly installed on the outside of the limiting shaft 12, and a push rod 22 is fixedly installed on the top of the limiting shaft 12. The top of the push rod 22 extends through the countersunk hole 19 to a position above the mounting block 11, and a pull rod 24 is fixedly connected between the two push rods 22, located inside the countersunk hole 19 and between the top of the limiting shaft 12. The push rod 22 is also fitted with a second compression spring 23. The limiting shaft 12 is screwed into the countersunk hole 19 through the spiral guide block 21. With the help of the second compression spring 23, the limiting shaft 12 can be inserted into the corresponding limiting groove 17, thereby limiting the bushing 9 in the first keyway 13. At the same time, rotating the pull rod 24 can coordinate with the two push rods 22 to make the two limiting shafts 12 rotate in the corresponding countersunk hole 19, so that one end of the limiting shaft 12 can be disengaged from the corresponding limiting groove 17, and the bushing 9 can be quickly removed for replacement.

[0023] It should be noted that this utility model is a torsional strength testing device for a motor drive shaft. First, select a corresponding bushing 9 according to the size of the drive shaft. Insert the key block 16 on the outer side of the bushing 9 into the first keyway 13 of the connecting seat 8. Then, release the pull rod 24, so that the push rod 22 loses external force. Then, the second compression spring 23 pushes the limiting shaft 12 towards the bushing 9, so that the limiting shaft 12 rotates using the outer spiral guide block 21 in conjunction with the spiral groove 20 on the inner side of the countersunk hole 19. This allows one end of the limiting shaft 12 to be inserted into the corresponding limiting groove 17, thus limiting the bushing 9 in the first keyway 13. During disassembly... When the limiting shaft 12 is in place, simply manually move the pull rod 24 to one side. This will cause the two ends of the pull rod 24 to rotate the corresponding push rods 22. The push rods 22 will then rotate the limiting shaft 12 at one end within the corresponding countersunk hole 19. This will cause the limiting shaft 12 to rotate away from the bushing 9 within the countersunk hole 19 using the outer spiral guide block 21. This will cause one end of both limiting shafts 12 to simultaneously disengage from the corresponding limiting groove 17. At this time, the bushing 9 will be pushed by the extension and rebound force of the first compression spring 15, causing one side of the bushing 9 to move out of the first keyway 13. The bushing 9 can then be pulled out of the first keyway 13.

[0024] During testing, both ends of the drive shaft are respectively engaged in the second keyways 18 of the clamps 7 on the drive mechanism 3 and the load device 6. The support base 4 supports the middle of the drive shaft. The main controller 2 starts the drive mechanism 3, and its output end drives one side of the clamp 7 to rotate, causing the drive shaft to twist. The other side of the clamp 7 transmits force to the load device 6, generating reverse resistance. The main controller 2 records data such as torque and torsion angle. The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A device for testing the torsional strength of a motor drive shaft, characterized in that: The system includes a workbench (1), on which a main controller (2) is fixedly mounted. A drive mechanism (3) is fixedly mounted on the workbench (1) near the main controller (2), and the drive mechanism (3) is electrically connected to the main controller (2) via a cable. A support base (4) is also fixedly mounted on the workbench (1) located on one side of the drive mechanism (3). A sliding platform (5) is also fixedly mounted on the workbench (1) located on one side of the support base (4). A load device (6) is fixedly mounted on one side of the sliding platform (5), and the load device (6) is connected to the main controller (2) via a cable. The device (2) is electrically connected. A clamp (7) is fixedly installed at the output end of the drive mechanism (3). A clamp (7) is also fixedly installed at one end of the load device (6). The clamp (7) includes a connecting seat (8). One side of the connecting seat (8) is fixedly installed at the output end of the drive mechanism (3) or on the side of the sliding platform (5). A bushing (9) is movably installed in the connecting seat (8). Two mounting slots (10) are opened on one side of the connecting seat (8). A mounting block (11) is fixedly installed in the mounting slot (10). A limit shaft (12) is movably installed in the mounting block (11).

2. The torsional strength testing device for a motor drive shaft according to claim 1, characterized in that: The connector (8) has a first keyway (13) inside, and a recessed groove (14) is provided inside the first keyway (13).

3. The torsional strength testing device for a motor drive shaft according to claim 2, characterized in that: A first compression spring (15) is fixedly connected inside the settling tank (14).

4. The torsional strength testing device for a motor drive shaft according to claim 2, characterized in that: The bushing (9) has a second keyway (18) inside, and multiple key blocks (16) are fixedly installed on the outside of the bushing (9). A limit groove (17) is opened on one side of the key block (16), and the bushing (9) is installed in the first keyway (13) through the multiple key blocks (16) on the outside.

5. The torsional strength testing device for a motor drive shaft according to claim 1, characterized in that: The mounting block (11) has a countersunk hole (19) inside, and a spiral groove (20) is formed inside the countersunk hole (19).

6. The torsional strength testing device for a motor drive shaft according to claim 5, characterized in that: A spiral guide block (21) is fixedly installed on the outside of the limiting shaft (12), and a top rod (22) is fixedly installed on the top of the limiting shaft (12). The top of the top rod (22) extends through the countersunk hole (19) to the position above the mounting block (11), and a pull rod (24) is fixedly connected between the two top rods (22). The top rod (22) located between the top of the countersunk hole (19) and the limiting shaft (12) is also fitted with a second compression spring (23). The limiting shaft (12) is spirally connected to the countersunk hole (19) through the spiral guide block (21).

Images