Shaft lever testing equipment
By employing a clamping mechanism and measuring components in the shaft testing equipment, the problem of unstable fixing of shafts with different radii was solved, achieving stable clamping and uniform measurement of shafts with different radii, thus improving the adaptability and accuracy of the testing equipment.
Patent Information
- Application Number
- CN202511549261.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-28
- Publication Date
- 2026-01-27
AI Technical Summary
Existing shaft testing equipment tends to move radially when fixing shafts of different radii, resulting in poor fixing performance.
The clamping mechanism includes a positioning seat and a mounting block. The clamping opening is formed by the abutment surface and the pressing surface and is fixed by fasteners. The measuring component abuts against the outer circumferential surface of the shaft. The driving component drives the measuring component to move, which can accommodate shafts of different radii.
It improves the fixation effect on shafts of different radii, ensures that the measuring components apply uniform force on shafts of different radii, and improves the accuracy and adaptability of the test.
Smart Images
Figure CN121409604A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of testing technology, and in particular to a shaft testing device. Background Technology
[0002] Before being put into use, shafts typically require radial force application for testing to obtain performance data. This testing is usually performed using shaft testing equipment. During testing, the shaft needs to be fixed to restrict radial movement under load. However, in existing technologies, when shaft testing equipment fixes shafts of different radii, the shaft is prone to radial movement under load, resulting in poor fixation. Summary of the Invention
[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a shaft testing device that can improve the fixing effect on shafts of different radius sizes.
[0004] This invention provides a shaft testing device, which includes a clamping mechanism and a measuring mechanism. The clamping mechanism includes a fastener, a positioning seat, and a mounting block. The positioning seat has two intersecting abutment surfaces, and the mounting block has two intersecting clamping surfaces. The abutment and clamping surfaces together form a clamping opening for the shaft to pass through, so that both the abutment and clamping surfaces abut against the outer circumferential surface of the shaft, and the positioning seat and mounting block clamp the shaft. The mounting block is movably connected to the positioning seat. When the mounting block moves relative to the positioning seat, the size of the clamping opening changes. Both the positioning seat and the mounting block are connected to the fastener, which is used to fix the positioning seat and the mounting block relatively. The measuring mechanism includes a measuring component and a driving component. The measuring component is mounted on the driving component and abuts against the outer circumferential surface of the shaft, and can detect the clamping force between the measuring component and the shaft. The driving component is connected to the clamping mechanism and can drive the measuring component to move relative to the clamping mechanism.
[0005] The shaft testing equipment provided by the embodiments of the present invention has at least the following beneficial effects: The abutting surface and the pressing surface enclose to form a clamping opening, which is used to pass through the shaft so that both the abutting surface and the pressing surface abut against the outer peripheral surface of the shaft. This allows the positioning seat and the mounting block to work together to clamp the shaft and balance the force applied to the shaft by the measuring component, thereby limiting the radial movement of the shaft. When the positioning seat moves relative to the mounting block, the size of the clamping opening changes, allowing shafts of different radii to pass through. When the shaft passes through the clamping opening, both the abutment surface and the clamping surface are tangent to the outer circumference of the shaft. The positioning seat can apply a force perpendicular to the abutment surface, and the mounting block can apply a force perpendicular to the clamping surface. The angle between the two abutment surfaces on the positioning seat and the angle between the two clamping surfaces on the mounting block are fixed. On the one hand, this allows the positioning seat and the mounting block to clamp and fix shafts of different radii. On the other hand, under the condition that the clamping force between the measuring component and the shaft is the same, the positioning seat and the mounting block can apply forces of the same magnitude and direction to shafts of different radii, making the clamping effect of the clamping mechanism on shafts of different radii more consistent. This allows the clamping mechanism to adapt to clamping shafts of different radii, thereby improving the fixing effect on shafts of different radii.
[0006] In one embodiment of this implementation, the measuring component includes a pressure block, an adjusting bolt, and a movable block. The movable block is connected to a driving component. The pressure block is used to abut against the outer peripheral surface of the shaft. The clamping opening is used to pass through the shaft whose axis is perpendicular to the first direction. One end of the adjusting bolt is connected to the pressure block, and the other end is rotatably connected to the movable block about an axis parallel to the first direction. When the adjusting bolt rotates, the pressure block moves relative to the movable block along the first direction.
[0007] In one embodiment of this implementation, the pressure block is formed with an arc-shaped surface, which is used to abut against the bushing that is slidably disposed on the shaft. The movable block can drive the pressure block to move, so that the pressure block drives the bushing to move along the axial direction of the shaft.
[0008] In one embodiment of this implementation, the measuring component further includes a connector having a first strip-shaped hole extending in a first direction. One of the pressure block and the movable block is connected to the connector, and the other is bolted to the first strip-shaped hole, so that the connector restricts the movement of the pressure block relative to the movable block in the first direction.
[0009] In one embodiment of this implementation, the driving member can drive the movable block to move along a second direction, the clamping port is used to pass through a shaft with its axis parallel to the second direction, the second direction is perpendicular to the first direction, and the connecting member is located on one side of the pressure block along a third direction, the third direction is perpendicular to the first and second directions.
[0010] In one embodiment of this implementation, the movable block and the connector are rotatably connected about an axis perpendicular to the first direction, and the pressure block is connected to the first strip-shaped hole bolt.
[0011] In one embodiment of this implementation, the shaft testing device includes a base plate and two clamping mechanisms. The base plate has a second strip-shaped hole extending in a second direction. The clamping opening is used to pass through a shaft whose axis is parallel to the second direction. One clamping mechanism is mounted on the base plate, and the other clamping mechanism is movably disposed on the base plate in the second direction and bolted to the second strip-shaped hole.
[0012] In one embodiment of this implementation, the fastener includes two mounting bolts, a clamping port for inserting a shaft with its axis parallel to the second direction, and two mounting holes spaced apart along a third direction perpendicular to the second direction on the mounting block. The two mounting bolts are inserted into the two mounting holes in a one-to-one correspondence and are threaded into the positioning seat. The mounting bolts can drive the mounting block to rotate relative to the positioning seat.
[0013] In one embodiment of this implementation, the positioning seat is provided with a limiting surface, which is perpendicular to the abutting surface and is used to abut against the end face of the shaft. The mounting block is provided with a mating surface, which is perpendicular to the pressing surface and abuts against the limiting surface. The clamping opening is used to pass through the shaft whose axis is parallel to the second direction. Both the abutting surface and the pressing surface are parallel to the second direction.
[0014] In one embodiment of this implementation, the measuring component further includes a pressure sensor. The pressure block, the pressure sensor, and the movable block are arranged in a straight line along a first direction. The pressure sensor is used to detect the clamping force between the pressure block and the shaft. The pressure sensor is mounted on the movable block. One end of the adjusting bolt is rotatably connected to the pressure sensor, and the other end is connected to the pressure block.
[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a three-dimensional structural schematic diagram of a shaft testing device according to one embodiment of the present invention; Figure 2 yes Figure 1 A three-dimensional structural diagram of the clamping mechanism; Figure 3 yes Figure 2 A disassembly diagram of the clamping mechanism; Figure 4 yes Figure 3 A disassembly diagram of the clamping mechanism from another perspective; Figure 5 yes Figure 1 A schematic diagram of the measurement component; Figure 6 yes Figure 5A disassembly diagram of the measurement components; Figure 7 yes Figure 1 A schematic diagram of the forces acting on the shaft.
[0017] Figure label: Shaft testing equipment 100; clamping mechanism 10; fastener 11; mounting bolt 111; positioning seat 12; abutment surface 121; limiting surface 122; mounting block 13; pressing surface 131; mating surface 132; mounting hole 133; clamping opening 14; measuring mechanism 20; measuring component 21; pressure block 211; arc surface 2111; adjusting bolt 212; threaded end 2121; connecting end 2122; movable block 213; connecting piece 214; first strip hole 2141; pressure sensor 215; driving component 22; base plate 30; second strip hole 31; control module 41; guide rail 42; shaft 200. Detailed Implementation
[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.
[0020] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.
[0022] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
[0024] Please see Figures 1 to 4 , Figure 1 This is a three-dimensional structural schematic diagram of the shaft testing device 100 according to one embodiment of the present invention; Figure 2 yes Figure 1 A three-dimensional structural schematic diagram of the clamping mechanism 10; Figure 3 yes Figure 2 A disassembly diagram of the clamping mechanism 10; Figure 4 yes Figure 3 A disassembled schematic diagram of the clamping mechanism 10 from another perspective. This invention provides a shaft testing device 100, which includes a clamping mechanism 10 and a measuring mechanism 20. The clamping mechanism 10 includes a fastener 11, a positioning seat 12, and a mounting block 13. The positioning seat 12 has two intersecting abutment surfaces 121, and the mounting block 13 has two intersecting pressing surfaces 131. The abutment surfaces 121 and pressing surfaces 131 enclose a clamping opening 14, through which a shaft 200 is inserted, such that both the abutment surfaces 121 and pressing surfaces 131 abut against the outer peripheral surface of the shaft 200, and the positioning seat 12 and mounting block 13 clamp the shaft 200. The mounting block 13 is movably connected to the positioning seat 12 and is relatively positioned. When the seat 12 moves, the size of the clamping opening 14 changes. Both the positioning seat 12 and the mounting block 13 are connected to the fastener 11, which is used to fix the positioning seat 12 and the mounting block 13 relatively. The measuring mechanism 20 includes a measuring component 21 and a driving component 22. The measuring component 21 is mounted on the driving component 22. The measuring component 21 is used to abut against the outer peripheral surface of the shaft 200 and can detect the clamping force between the measuring component 21 and the shaft 200. The driving component 22 is connected to the clamping mechanism 10 and can drive the measuring component 21 to move relative to the clamping mechanism 10.
[0025] Specifically, the fastener 11 is a bolt, and both the abutting surface 121 and the pressing surface 131 are planes. Both the abutting surface 121 and the pressing surface 131 are parallel to the X direction, so that the axis of the clamping opening 14 formed by the abutting surface 121 and the pressing surface 131 is parallel to the X direction. The clamping opening 14 is used to clamp the shaft 200 whose axis is parallel to the X direction. The mounting block 13 and the positioning block can be movably connected along the Z direction. The driving component 22 is a lead screw motor whose driving direction is parallel to the X direction. The measuring component 21 is located on one side of the clamping mechanism 10 along the X direction so as to abut against the shaft 200 passing through the clamping opening 14 along the Z direction. The measuring component 21 includes a sensor, which is used to detect the clamping force between the measuring component 21 and the shaft 200.
[0026] Understandably, before testing the shaft 200, the shaft 200 is first placed on the positioning seat 12, and the abutment surface 121 on the positioning seat 12 abuts against the outer peripheral surface of the shaft 200. Then, the mounting seat is moved along the Z direction toward the positioning seat 12 until the pressing surface 131 on the mounting seat abuts against the outer peripheral surface of the shaft 200, and the pressing surface 131 and the abutment surface 121 form a clamping opening 14 whose size is adapted to the radius of the shaft 200. At this time, the positioning seat 12 and the mounting block 13 can be fixed relative to each other by rotating the bolts that serve as fasteners 11, so that the positioning seat 12 and the mounting seat clamp and position the shaft 200 from opposite sides along the Z direction, and the clamping of the shaft 200 is completed.
[0027] It is understood that in some embodiments, the measuring mechanism 20 further includes a metering module electrically connected to the measuring component 21. The measuring component 21 can send the clamping force data between the measuring component 21 and the shaft 200 to the metering module. The driving component 22 can drive the measuring component 21 to move in the X direction, so that the metering module can record the clamping force data at multiple positions on the measuring component 21 and the shaft 200, and enable the metering module to display the clamping force data emitted by the current measuring component 21.
[0028] It should be understood that in some embodiments, the measuring mechanism 20 further includes a control module 41, which is electrically connected to the drive member 22. The control module 41 is used to control the drive member 22 to drive the measuring component 21 to move along the axis of the shaft 200, so that the measuring component 21 reciprocates according to a preset stroke and cycle.
[0029] It should be noted that you should refer to [link / reference]. Figure 7 , Figure 7 yes Figure 1A force diagram of shaft 200 is shown. The included angle α between the two intersecting abutment surfaces 121 is a constant, and the included angle β between the two intersecting pressing surfaces 131 is a constant. When the measuring component 21 applies the same abutment force Fc to shaft 200, and the clamping mechanism 10 clamps shafts 200 with fixed radii R1 and R2, the magnitude and direction of the force Fa exerted by the abutment surface 121 on shaft 200 with radius R1 and shaft 200 with radius R2 are the same. The magnitude and direction of the force Fb exerted by the pressing surface 131 on shaft 200 with radius R1 and shaft 200 with radius R2 are the same. This ensures that the force conditions of shafts 200 with different radii are consistent when clamped in the clamping mechanism 10, allowing control of variables during testing of shafts 200 with different radii, and facilitating comparison of test data for shafts 200 with different radii.
[0030] The shaft testing device 100 of the present invention has a clamping opening 14 formed by the abutment surface 121 and the pressing surface 131. The clamping opening 14 is used to pass through the shaft 200 so that both the abutment surface 121 and the pressing surface 131 abut against the outer peripheral surface of the shaft 200. This allows the positioning seat 12 and the mounting block 13 to cooperate in clamping the shaft 200 and balance the force applied to the shaft 200 by the measuring component 21, thereby limiting the radial movement of the shaft 200. When the positioning seat 12 moves relative to the mounting block 13, the size of the clamping opening 14 changes so that shafts 200 of different radii can pass through it. When the shaft 200 passes through the clamping opening 14, both the abutment surface 121 and the pressing surface 131 are tangent to the outer circumferential surface of the shaft 200. The positioning seat 12 can apply a force perpendicular to the abutment surface 121 to the shaft 200, and the mounting block 13 can apply a force perpendicular to the pressing surface 131 to the shaft 200. The angle between the two abutment surfaces 121 on the positioning seat 12 and the angle between the two pressing surfaces 131 on the mounting block 13 are... The positioning mechanism 10 has two functions: firstly, it enables the positioning seat 12 and the mounting block 13 to clamp and fix shafts 200 of different radii; secondly, under the condition that the clamping force between the measuring component 21 and the shaft 200 is the same, the positioning seat 12 and the mounting block 13 can apply the same force in both magnitude and direction to shafts 200 of different radii, and make the clamping effect of the clamping mechanism 10 on shafts 200 of different radii tend to be consistent, so that the clamping mechanism 10 can adapt to clamping shafts 200 of different radii, thereby improving the fixing effect on shafts 200 of different radii.
[0031] Please see Figure 1 , Figures 5 to 6 , Figure 5 yes Figure 1 A schematic diagram of the structure of the measuring component 21; Figure 6 yes Figure 5A disassembled schematic diagram of the measuring component 21. In one embodiment of this implementation, the measuring component 21 includes a pressure block 211, an adjusting bolt 212, and a movable block 213. The movable block 213 is connected to the driving member 22. The pressure block 211 is used to abut against the outer peripheral surface of the shaft 200. The clamping port 14 is used to pass through the shaft 200 whose axis is perpendicular to the first direction. One end of the adjusting bolt 212 is connected to the pressure block 211, and the other end is rotatably connected to the movable block 213 about an axis parallel to the first direction. When the adjusting bolt 212 rotates, the pressure block 211 moves relative to the movable block 213 in the first direction.
[0032] Specifically, the first direction is parallel to the Z direction. The movable block 213 is threadedly engaged with the lead screw of the lead screw motor, which serves as the driving component 22. The axis of the adjusting bolt 212 is parallel to the Z direction. The adjusting bolt 212 has a threaded end 2121 and a connecting end 2122. The connecting end 2122 is connected to the pressure block 211. The threaded end 2121 is threaded and threadedly engaged with the movable block 213. The adjusting bolt 212 can rotate relative to the movable block 213 around an axis parallel to the Z direction. When the adjusting bolt 212 rotates, it can drive the pressure block 211 to move relative to the movable block 213 along the Z direction, so that the pressure block 211 moves toward or away from the shaft 200.
[0033] Understandably, when the adjusting bolt 212 moves the pressure block 211 toward the shaft 200, it increases the clamping force between the pressure block 211 and the shaft 200. Conversely, when the adjusting bolt 212 moves the pressure block 211 away from the shaft 200, it decreases the clamping force between them. This allows the force exerted by the pressure block 211 on the shaft 200 to be adjusted via the adjusting bolt 212, which is beneficial for changing test conditions and improving the applicability of the shaft testing equipment 100. The operation of the adjusting bolt 212 does not consume electrical energy, and the driving force provided by the adjusting bolt 212 to the pressure block 211 is not affected by voltage fluctuations. By setting the adjusting bolt 212, the clamping force between the pressure block 211 and the shaft 200 can be stabilized, thereby reducing the risk of decreased test accuracy caused by power supply voltage fluctuations.
[0034] Please see Figure 1 , Figures 5 to 6 In one embodiment of this implementation, the pressure block 211 is formed with an arc-shaped surface 2111, which is used to abut against the bushing slidably disposed on the shaft 200. The movable block 213 can drive the pressure block 211 to move, so that the pressure block 211 drives the bushing to move along the axial direction of the shaft 200.
[0035] Specifically, the axis of the arc-shaped surface 2111 is parallel to the X direction, and the axis of the arc-shaped surface 2111 is located on the side of the pressure block 211 away from the adjusting bolt 212. It is understandable that under certain conditions, it is necessary to measure the service life of the shaft 200 when sliding friction occurs between the shaft 200 and the bushing. When the driving component 22 drives the movable block 213 to move along the X direction, the pressure block 211, which abuts against the bushing, can drive the bushing to reciprocate linearly along the X direction, causing sliding friction between the shaft 200 and the bushing. By providing the arc-shaped surface 2111 on the pressure block 211, the contact area between the pressure block 211 and the outer circumferential surface of the bushing can be increased, allowing the pressure block 211 to drive the bushing more stably, which helps reduce the risk of the bushing detaching from the pressure block 211, making the test impossible.
[0036] Please see Figure 1 , Figures 5 to 6 In one embodiment of this implementation, the measuring component 21 further includes a connector 214, which has a first strip hole 2141 extending in a first direction. One of the pressure block 211 and the movable block 213 is connected to the connector 214, and the other is bolted to the first strip hole 2141, so that the connector 214 restricts the pressure block 211 from moving relative to the movable block 213 in the first direction.
[0037] Specifically, the first strip-shaped hole 2141 extends along the Z direction and penetrates the connector 214. The first strip-shaped hole 2141 is used for bolt insertion. In this embodiment, the connector 214 has two first strip-shaped holes 2141 arranged along the Z direction. One first strip-shaped hole 2141 is bolted to the movable block 213, and the other first strip-shaped hole 2141 is bolted to the pressure block 211. In other embodiments, the first strip-shaped hole 2141 is bolted to the pressure block 211, and the connector 214 and the movable block 213 can be connected by adhesive, welding, or magnetic attraction. Alternatively, the first strip-shaped hole 2141 is bolted to the movable block 213, and the connector 214 and the pressure block 211 are connected by adhesive, welding, or magnetic attraction.
[0038] Understandably, during the process of adjusting the clamping force between the pressure block 211 and the shaft 200 by adjusting the bolt 212, the distance between the pressure block 211 and the movable block 213 along the Z direction changes. The bolt can pass through different positions distributed along the Z direction in the first strip hole 2141 to connect with the movable block 213 and the pressure block 211, so that the connector 214 can connect the movable block 213 and the pressure block 211 with different spacings and fix the movable block 213 and the pressure block 211 relatively. The adjusting bolt 212 connects the movable block 213 to the pressure block 211. When the driving component 22 moves the movable block 213, it may generate vibration, which may cause the adjusting bolt 212 to loosen. This could cause the force applied by the pressure block 211 to the shaft 200 to change unexpectedly, resulting in a decrease in the accuracy of the test results. By setting the connecting component 214 and connecting the movable block 213 and the pressure block 211 together with the adjusting bolt 212, the risk of the force applied by the pressure block 211 to the shaft 200 changing unexpectedly can be reduced.
[0039] Please see Figure 1 , Figures 5 to 6 In one embodiment of this implementation, the driving member 22 can drive the movable block 213 to move along the second direction, the clamping port 14 is used to pass through the shaft 200 whose axis is parallel to the second direction, the second direction is perpendicular to the first direction, and the connecting member 214 is located on one side of the pressure block 211 along the third direction, the third direction is perpendicular to the first direction and the second direction.
[0040] Specifically, the driving member 22 can drive the movable block 213 to move in the X direction, the clamping port 14 is used to pass through the shaft 200 whose axis is parallel to the X direction, the connecting member 214 is located on one side of the adjusting bolt 212 in the Y direction, the first strip hole 2141 passes through the connecting member 214 in the Y direction and has a hole wall parallel to the Y direction, so as to provide a force parallel to the X direction to the bolt passing through the first strip hole 2141.
[0041] It should be noted that during the process of the movable block 213 driving the pressure block 211 to move in the X direction, the adjusting bolt 212 will be subjected to a torque with its axis parallel to the Y direction, and will bend under the action of the torque, which will lead to inaccurate test results. A force parallel to the X direction can be applied to the pressure block 211 through the connector 214 to limit the bending of the adjusting bolt 212. If the connector 214 is set on the side of the adjusting bolt 212 along the X direction, the first strip hole 2141 needs to pass through the connector 214 along the X direction, and the bolt needs to pass through the first strip hole 2141 along the X direction to be threaded with the pressure block 211. Under this condition, the hole wall of the first strip hole 2141 is parallel to the X direction and cannot provide a force parallel to the X direction to the bolt to limit the movement of the pressure block 211 relative to the movable block 213 and limit the bending of the adjusting bolt 212. It is necessary to directly abut the connector 214 against the pressure block 211 to apply a force parallel to the X direction to the pressure block 211 to limit the bending of the adjusting bolt 212. However, under different test conditions for the shaft 200, the external dimensions of the pressure block 211 may be different, which may cause the connector 214 to fail to abut against the pressure block 211.
[0042] Understandably, by placing the connector 214 on one side of the adjusting bolt 212 along the Y direction and allowing the first strip hole 2141 to pass through the connector 214 along the Y direction, the connector 214 can apply a force parallel to the X direction to the bolt through the hole wall of the first strip hole 2141, thereby restricting the movement of the pressure block 211 and restricting the bending of the adjusting bolt 212. This eliminates the need for the connector 214 to abut against the pressure block 211. On the one hand, this helps reduce the risk of inaccurate test results due to the bending of the adjusting bolt 212. On the other hand, it facilitates the adaptation of pressure blocks 211 of various shapes and sizes.
[0043] In one embodiment of this implementation, the movable block 213 and the connector 214 are rotatably connected about an axis perpendicular to the first direction, and the pressure block 211 is bolted to the first strip hole 2141.
[0044] Specifically, the movable block 213 and the connecting piece 214 are rotatably connected about an axis parallel to the Y direction. Understandably, during the testing of the shaft 200, the movable block 213 drives the adjusting bolt 212 to reciprocate along the X direction. The adjusting bolt 212 will be alternately subjected to two torques with axes parallel to the Y direction and opposite directions, which may lead to fatigue fracture of the adjusting bolt 212. The connecting piece 214 can pull the pressure block 211 to reduce the risk of the pressure block 211 flying out and injuring people when the adjusting bolt 212 breaks. The rotatable connection between the connecting piece 214 and the movable block 213 allows the connecting piece 214 to rotate the pressure block 211 to one side of the movable block 213 when the adjusting bolt 212 breaks, reducing the risk of the pressure block 211 deflecting due to changes in force and scratching the shaft 200. The connector 214 can rotate relative to the movable block 213 about an axis parallel to the Y direction, so that the direction of rotation of the pressure block 211 driven by the connector 214 is consistent with the direction of the torque on the adjusting bolt 212 during the test. This can reduce the vibration caused by the breakage of the adjusting bolt 212, and can also drive the pressure block 211 to rotate in time after the adjusting bolt 212 breaks, so as to further reduce the risk of the shaft 200 being scratched.
[0045] Please see Figures 1 to 4 In one embodiment of this implementation, the shaft testing device 100 includes a base plate 30 and two clamping mechanisms 10. The base plate 30 has a second strip-shaped hole 31 extending in a second direction. The clamping opening 14 is used to pass through a shaft 200 whose axis is parallel to the second direction. One clamping mechanism 10 is mounted on the base plate 30, and the other clamping mechanism 10 is movably disposed on the base plate 30 in the second direction and bolted to the second strip-shaped hole 31.
[0046] Specifically, two clamping mechanisms 10 are arranged along the X direction, and a guide rail 42 extending along the X direction is provided on the base. The positioning seat 12 in one clamping mechanism 10 can slide and cooperate with the guide rail 42 along the X direction and is bolted to the second slot 31. It can be understood that fixing the shaft 200 by the two clamping mechanisms 10 can improve the fixing effect of the shaft 200. One clamping mechanism 10 can move relative to the other clamping mechanism 10 along the X direction and can be fixed relative to the base plate 30 through the second slot 31, so as to realize the clamping of shafts 200 of different lengths, which is beneficial to improving the adaptability of the shaft testing equipment 100.
[0047] Please see Figures 1 to 4In one embodiment of this implementation, the fastener 11 includes two mounting bolts 111, the clamping port 14 is used to pass through the shaft 200 whose axis is parallel to the second direction, and the mounting block 13 has two mounting holes 133 arranged at intervals along a third direction, the third direction being perpendicular to the second direction. The two mounting bolts 111 are correspondingly passed through the two mounting holes 133 and are threadedly engaged with the positioning seat 12. The mounting bolts 111 can drive the mounting block 13 to rotate relative to the positioning seat 12.
[0048] Specifically, in some embodiments, the axis of the mounting hole 133 is parallel to the Z-direction, the radius of the mounting hole 133 is larger than the radius of the mounting bolt 111, two mounting holes 133 are spaced apart along the Y-direction, the axis of the mounting bolt 111 is parallel to the Z-direction, the mounting bolt 111 and the mounting block 13 are rotatably engaged about the axis of the mounting bolt 111, and the positioning seat 12 and the mounting block 13 are arranged along the Z-direction. It is understood that the mounting bolt 111 can apply a force along the Z-direction to the mounting block 13, and the mounting bolt 111 is threadedly engaged with the positioning seat 12 so that when the mounting bolt 111 rotates, it can move relative to the positioning seat 12 along the Z-direction and push the mounting block 13. When the two mounting bolts 111 are rotated at different angles, they move different distances along the Z direction. At this time, the forces exerted by the two mounting bolts 111 on the mounting block 13 are different, and the two mounting bolts 111 are arranged along the Y direction so that the two mounting bolts 111 work together to generate a torque on the mounting block 13 with the axis parallel to the X direction. This allows the mounting block 13 to rotate around an axis parallel to the X direction, thereby changing the direction of the force Fb exerted by the clamping surface 131 on the shaft 200. This enables the shaft 200 to be subjected to different stresses and to complete tests under different requirements, which is beneficial to improving the adaptability of the shaft testing equipment 100.
[0049] Please see Figures 1 to 4 In one embodiment of this implementation, the positioning seat 12 is provided with a limiting surface 122, which is perpendicular to the abutment surface 121 and is used to abut against the end face of the shaft 200. The mounting block 13 is provided with a mating surface 132, which is perpendicular to the pressing surface 131 and abuts against the limiting surface 122. The clamping opening 14 is used to pass through the shaft 200 whose axis is parallel to the second direction. Both the abutment surface 121 and the pressing surface 131 are parallel to the second direction.
[0050] Specifically, both the limiting surface 122 and the mating surface 132 are perpendicular to the X direction. It is understood that when the limiting surface 122 and the mating surface 132 abut, they restrict the deflection of the mounting block 13 relative to the positioning seat 12, thereby reducing the risk that the supporting surface 121 and the pressing surface 131 are tilted in the X direction. The supporting surface 121 and the pressing surface 131 are parallel to the X direction, ensuring that when the shaft 200 passes through the clamping opening 14, the axis of the shaft 200 is parallel to the X direction, and restricting the rotation of the shaft 200 around an axis perpendicular to the X direction. During the movement of the pressure block 211 along the X direction, the pressure block 211 applies a frictional force along the X direction to the shaft 200. The limiting surface 122 restricts the movement of the shaft 200 along the X direction, reducing the risk of the shaft 200 disengaging from the clamping mechanism 10, and also reducing the risk of the shaft 200 exhibiting unexpected activity that could decrease the accuracy of the test results.
[0051] Please see Figures 1 to 4 In one embodiment of this implementation, the measuring component 21 further includes a pressure sensor 215. The pressure block 211, the pressure sensor 215, and the movable block 213 are arranged in a straight line along a first direction. The pressure sensor 215 is used to detect the clamping force between the pressure block 211 and the shaft 200. The pressure sensor 215 is mounted on the movable block 213. One end of the adjusting bolt 212 is rotatably connected to the pressure sensor 215, and the other end is connected to the pressure block 211.
[0052] Specifically, the movable block 213, pressure sensor 215, adjusting bolt 212, and pressure block 211 are arranged sequentially along the Z-direction. The pressure sensor 215 has a threaded hole, and the threaded end 2121 is threaded into the threaded hole on the pressure sensor 215. It can be understood that the arrangement of the pressure block 211, pressure sensor 215, and movable block 213 along the Z-line ensures that the direction of the force applied by the movable block 213 to the pressure sensor 215 is collinear with the force applied by the shaft 200 to the pressure block 211, which helps improve the accuracy of the pressure sensor 215 during detection.
[0053] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.
Claims
1. A shaft testing device (100), characterized in that, include: The clamping mechanism (10) includes a fastener (11), a positioning seat (12), and a mounting block (13). The positioning seat (12) has two intersecting abutment surfaces (121), and the mounting block (13) has two intersecting clamping surfaces (131). The abutment surfaces (121) and the clamping surfaces (131) together form a clamping opening (14). The clamping opening (14) is used to pass through a shaft (200) so that both the abutment surfaces (121) and the clamping surfaces (131) are perpendicular to the shaft (200). The outer peripheral surface of the shaft (200) abuts against the positioning seat (12) and the mounting block (13), and the mounting block (13) clamps the shaft (200). The mounting block (13) is movably connected to the positioning seat (12). When the mounting block (13) moves relative to the positioning seat (12), the size of the clamping opening (14) changes. The positioning seat (12) and the mounting block (13) are both connected to the fastener (11). The fastener (11) is used to fix the positioning seat (12) and the mounting block (13) relative to each other. The measuring mechanism (20) includes a measuring component (21) and a driving member (22). The measuring component (21) is mounted on the driving member (22). The measuring component (21) is used to abut against the outer peripheral surface of the shaft (200) and can detect the clamping force between the measuring component (21) and the shaft (200). The driving member (22) is connected to the clamping mechanism (10) and can drive the measuring component (21) to move relative to the clamping mechanism (10).
2. The shaft testing device (100) according to claim 1, characterized in that, The measuring component (21) includes a pressure block (211), an adjusting bolt (212), and a movable block (213). The movable block (213) is connected to the driving component (22). The pressure block (211) is used to abut against the outer peripheral surface of the shaft (200). The clamping port (14) is used to pass through the shaft (200) whose axis is perpendicular to the first direction. One end of the adjusting bolt (212) is connected to the pressure block (211), and the other end is rotatably connected to the movable block (213) about an axis parallel to the first direction. When the adjusting bolt (212) rotates, the pressure block (211) moves relative to the movable block (213) along the first direction.
3. The shaft testing device (100) according to claim 2, characterized in that, The pressure block (211) has an arc-shaped surface (2111) for contacting the bushing that is slidably mounted on the shaft (200). The movable block (213) can drive the pressure block (211) to move so that the pressure block (211) drives the bushing to move along the axis of the shaft (200).
4. The shaft testing device (100) according to claim 2, characterized in that, The measuring component (21) further includes a connector (214) having a first strip hole (2141) extending along the first direction. One of the pressure block (211) and the movable block (213) is connected to the connector (214), and the other is bolted to the first strip hole (2141) so that the connector (214) restricts the pressure block (211) from moving relative to the movable block (213) along the first direction.
5. The shaft testing device (100) according to claim 4, characterized in that, The driving member (22) can drive the movable block (213) to move along the second direction. The clamping port (14) is used to pass through a shaft (200) whose axis is parallel to the second direction. The second direction is perpendicular to the first direction. The connecting member (214) is located on one side of the pressure block (211) along a third direction. The third direction is perpendicular to the first direction and the second direction.
6. The shaft testing device (100) according to claim 4, characterized in that, The movable block (213) and the connector (214) are rotatably connected about an axis perpendicular to the first direction, and the pressure block (211) is bolted to the first strip hole (2141).
7. The shaft testing device (100) according to claim 1, characterized in that, The shaft testing device (100) includes a base plate (30) and two clamping mechanisms (10). The base plate (30) has a second strip hole (31) extending in a second direction. The clamping port (14) is used to pass through a shaft (200) whose axis is parallel to the second direction. One of the clamping mechanisms (10) is mounted on the base plate (30), and the other clamping mechanism (10) is movably disposed on the base plate (30) in the second direction and bolted to the second strip hole (31).
8. The shaft testing device (100) according to claim 1, characterized in that, The fastener (11) includes two mounting bolts (111). The clamping port (14) is used to pass through a shaft (200) whose axis is parallel to the second direction. The mounting block (13) has two mounting holes (133) arranged at intervals along a third direction. The third direction is perpendicular to the second direction. The two mounting bolts (111) are correspondingly passed through the two mounting holes (133) and threadedly engaged with the positioning seat (12). The mounting bolts (111) can drive the mounting block (13) to rotate relative to the positioning seat (12).
9. The shaft testing device (100) according to claim 1, characterized in that, The positioning seat (12) is provided with a limiting surface (122), which is perpendicular to the abutment surface (121) and is used to abut against the end face of the shaft (200). The mounting block (13) is provided with a mating surface (132), which is perpendicular to the pressing surface (131) and abuts against the limiting surface (122). The clamping port (14) is used to pass through the shaft (200) whose axis is parallel to the second direction. Both the abutment surface (121) and the pressing surface (131) are parallel to the second direction.
10. The shaft testing device (100) according to claim 2, characterized in that, The measuring component (21) further includes a pressure sensor (215). The pressure block (211), the pressure sensor (215), and the movable block (213) are arranged in a straight line along the first direction. The pressure sensor (215) is used to detect the clamping force between the pressure block (211) and the shaft (200). The pressure sensor (215) is mounted on the movable block (213). One end of the adjusting bolt (212) is rotatably connected to the pressure sensor (215), and the other end is connected to the pressure block (211).