Deformation measuring device for shaft parts

Abstract

This application relates to the field of bending detection technology for shaft parts, and more particularly to a deformation measuring device for shaft parts. The deformation measuring device includes a fixed base, a force applying mechanism, and a deformation measuring mechanism. The fixed base is used to fix the shaft part. The force applying mechanism includes a rotating lever and a force applying element. The rotating lever has a first rotating end and a second rotating end opposite to each other. The force applying element is located at the first rotating end, and the second rotating end can abut against the measurement position of the shaft part, so that the force applying element applies a force to the measurement position, causing the shaft part to bend and deform. The displacement measuring device of the deformation measuring mechanism is set along a first direction corresponding to the measurement position to measure the amount of deformation at the measurement position. Thus, the bending deformation of the shaft part can be directly detected and the degree of deformation can be measured, improving the detection efficiency of the steering system.

Description

Technical Field

[0001] This application relates to the field of bending detection technology for shaft parts, and in particular to a deformation measuring device for shaft parts. Background Technology

[0002] With the rapid development of the automotive industry, the performance of steering systems has received increasing attention. Common steering systems typically include shaft components, such as the steering column and geared steering gear. The degree of bending deformation of these shaft components directly affects the stability of the steering system and the driving feel. Through the steering system, the driver can properly control the vehicle's state, thereby achieving comfortable and safe steering.

[0003] In related technologies, the performance of the steering system is usually tested directly, without a separate device for detecting the bending deformation of shaft components. This makes it impossible to confirm whether the shaft components in the steering system meet the requirements, which increases the difficulty and complexity of troubleshooting when testing the steering system, and results in low testing efficiency. Utility Model Content

[0004] This application provides a deformation measuring device for shaft-type parts, which aims to directly detect bending deformation and measure the degree of deformation of shaft-type parts, thereby improving the detection efficiency of steering systems.

[0005] The specific technical solution is as follows:

[0006] This application provides a deformation measuring device for shaft-type parts, comprising a fixed base, a force-applying mechanism, and a deformation measuring mechanism. The fixed base is used to fix the shaft-type parts. The force-applying mechanism includes a rotating lever and a force-applying element. The rotating lever has a first rotating end and a second rotating end opposite to each other. The force-applying element is disposed at the first rotating end, and the second rotating end can abut against the measurement position of the shaft-type parts to apply a force to the measurement position through the force-applying element, causing the shaft-type parts to bend and deform. The deformation measuring mechanism includes a displacement measuring device, which is disposed along a first direction corresponding to the measurement position to measure the deformation at the measurement position. The first direction is the radial direction of the shaft-type parts, and the deformation is the displacement of the measurement position in the first direction.

[0007] The deformation measuring device provided in this application embodiment fixes a shaft-like part on a fixed base. Then, a force-applying mechanism is used, with a force-applying element at the first rotating end of a rotating lever and the second rotating end of the lever abutting against the shaft-like part. This applies the force of the force-applying element to the shaft-like part through the lever structure, causing bending deformation. Finally, a displacement measuring device of the deformation measuring mechanism is positioned at the corresponding measurement location to measure the deformation at that location. This configuration allows for direct measurement of the deformation of shaft-like parts under different forces, thereby improving the detection efficiency of steering systems. Furthermore, this deformation measuring device has a simple structure and is easy to operate. The rotating lever design makes applying force to the shaft-like part more convenient, and the overall structure has a high degree of integration, making operation more flexible.

[0008] In some embodiments, the fixing base includes a base, a support member, and a fixing member. The support member is disposed on the top of the base. A placement groove with a top opening is formed on the support member. The placement groove extends through both sides of the support member along a second direction and is used to place the shaft-like part. The fixing member is disposed facing the top opening of the placement groove and is used to fix the shaft-like part located in the placement groove. The second direction is the axial direction of the shaft-like part.

[0009] This design allows for direct positioning and support of shaft-like parts via the placement slot. Furthermore, the fasteners at the top opening of the placement slot secure the shaft-like parts within the slot, preventing them from moving during force application and ensuring the accuracy of the measurement results.

[0010] In some embodiments, the fixing base further includes a first bracket disposed on the base and extending above the opening of the placement slot; the fixing member is disposed on the first bracket at a position above the opening of the placement slot, and the fixing member is movably connected to the first bracket to move relative to the first bracket toward or away from the placement slot.

[0011] By movably connecting the fixing member to the first bracket, allowing the fixing member to move relative to the first bracket towards or away from the placement slot, it is convenient to place shaft-like parts in the placement slot and then fix them in place. When placing a shaft-like part, moving the fixing member away from the placement slot creates more space above the slot, making it easier to insert the shaft-like part. After placement, the fixing member can be further moved to abut against the shaft-like part, ensuring that the shaft-like part is fixed in the placement slot and that relative movement is prevented to a certain extent.

[0012] In some embodiments, the first bracket has an adjustment hole extending toward the placement groove. The fixing member includes a rotating rod and an abutment. The rotating rod passes through the adjustment hole, and the abutment is located at one end of the rotating rod facing the placement groove. The wall of the adjustment hole is provided with an internal thread, and the side wall of the rotating rod is provided with an external thread that matches the internal thread.

[0013] This design allows the fixing component to be fixed by means of the threaded engagement between the rotating rod and the adjusting hole. By rotating the rotating rod, the abutment at one end of the rotating rod can be moved towards or away from the placement groove, thereby fixing the shaft-like parts. It also facilitates placement before measurement and timely removal after measurement. The operation is simple and the movement speed is controllable, which can avoid damage to the shaft-like parts to a certain extent.

[0014] In some embodiments, the number of the supports is at least two, and the at least two supports are arranged at intervals along the first direction on the top of the base; the placement slots on the at least two supports are correspondingly arranged along the same extending direction. This arrangement can improve the fixing effect on shaft-type parts.

[0015] In some embodiments, the force-applying mechanism is located on one side of the base along the second direction, and the support member is slidably connected to the base along the second direction so as to be movable toward or away from the force-applying mechanism.

[0016] This design allows for an adjustable distance between the support and the force-applying mechanism, enabling flexible adjustment of the fixed position of shaft-type parts or changing the fixed position according to different types of shaft-type parts to ensure effective fixation and accurate measurement results. Furthermore, adjusting the position of the support can also change the measurement position of the shaft-type parts, thereby enhancing the flexibility of the measuring device.

[0017] In some embodiments, the top of the base is provided with a first sliding groove, which extends along the second direction; the bottom of the support member is provided with a first connecting hole corresponding to the position of the first sliding groove, and the support member and the base are slidably connected by fasteners passing through the first sliding groove and the first connecting hole.

[0018] This design allows the support to slide smoothly relative to the base. Furthermore, the first slide groove ensures that the orientation of the support is fixed, thereby ensuring that the orientation of the placement groove is fixed. In addition, the support can be fixed in position whenever it slides to any position in the first slide groove using fasteners.

[0019] In some embodiments, the force-applying mechanism includes a second bracket, which is disposed on one side of the base along the second direction. The second bracket has a rod connection hole, and the rotating lever passes through the rod connection hole. A rotating shaft is disposed in the rod connection hole, and the rotating lever is rotatably connected to the second bracket through the rotating shaft.

[0020] This configuration allows the rotating lever to be supported by the second bracket, enabling it to abut against the shaft-like parts. Furthermore, the rod connection hole allows the rotating lever to rotate relative to the shaft-like parts, allowing the second rotating end of the rotating lever to apply force to the shaft-like parts.

[0021] In some embodiments, the second rotating end and the displacement measuring device are arranged in a vertical direction and together form a test gap for the shaft-like part to pass through. The placement groove extends in a horizontal direction, and the test gap and the placement groove are arranged in a second direction. The force-applying element is a gravity weight.

[0022] This design allows the shaft-like parts located in the placement slot to extend horizontally. Thus, when the rotating lever applies force to the measuring position of the shaft-like part, the force is radially directed along the part. This directly correlates the deformation of the shaft-like part with the applied force, eliminating the need for force conversion or directional decomposition. Furthermore, the use of gravity weights for the force application makes the structure easier to obtain, provides a clear force, and allows for adjustments to different weights, making operation more convenient.

[0023] In some embodiments, the deformation measuring mechanism further includes a fixed rod disposed on the second bracket, which, together with the second rotating end, forms a test gap for the shaft-like part to pass through. The displacement measuring device is disposed at the position corresponding to the second rotating end of the fixed rod. This arrangement allows for a better positional correspondence between the displacement measuring device and the second rotating end of the rotating lever, thereby further ensuring the accuracy of the measurement results. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the deformation measuring device for shaft parts provided in this application during use;

[0025] Figure 2 This is a schematic diagram of the deformation measuring device for shaft parts provided in the embodiments of this application;

[0026] Figure 3 This is a schematic diagram of the structure of the fixing component of the deformation measuring device for shaft parts provided in the embodiments of this application;

[0027] Figure 4This is a bottom view of the top plate of the deformation measuring device for shaft parts provided in the embodiments of this application;

[0028] Figure 5 yes Figure 4 A schematic diagram of the cross-section along the AA direction;

[0029] Figure 6 This is a bottom view of the base plate of the deformation measuring device for shaft parts provided in the embodiments of this application;

[0030] Figure 7 yes Figure 6 A schematic diagram of the cross-section along the BB direction;

[0031] Figure 8 This is a schematic diagram of the base of the deformation measuring device for shaft parts provided in the embodiments of this application;

[0032] Figure 9 This is a schematic diagram of the force application mechanism and the deformation measurement mechanism of the deformation measurement device for shaft parts provided in the embodiments of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Fixed base; 11. Base; 111. Base plate; 112. First slide groove; 113. Second slide groove; 114. Support plate; 115. Top plate; 116. Support member connection hole; 117. Fixing member connection hole; 12. Support member; 13. Fixing member; 131. Rotating rod; 132. Abutment joint; 133. Rotating arm; 14. Placement groove; 15. First bracket; 151. Adjustment hole; 152. First support; 153. First extension rod;

[0035] 2. Force-applying mechanism; 21. Rotating lever; 211. First rotating end; 212. Second rotating end; 22. Force-applying component; 23. Second bracket; 231. Rod connection hole; 24. Rotating shaft;

[0036] 3. Deformation measuring mechanism; 31. Displacement measuring instrument; 32. Fixing rod;

[0037] 10. Shaft-type parts; 100. Measurement position. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0039] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] As mentioned in the background section, performance testing of steering systems typically involves testing the entire system without separately testing the bending deformation of shaft components. This makes it impossible to confirm whether the shaft components in the steering system meet the requirements, increasing the difficulty and complexity of troubleshooting during steering system testing and resulting in low testing efficiency.

[0043] Based on the above, the applicant of this application has proposed a technical solution in the embodiments of this application. Specifically, it provides a deformation measuring device for shaft parts, which can directly detect and measure the bending deformation of shaft parts, thereby reducing the difficulty and complexity of inspection and improving inspection efficiency.

[0044] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0045] like Figure 1 and Figure 2 As shown in the figure, this application provides a deformation measuring device for shaft-type parts, which includes a fixed base 1, a force application mechanism 2, and a deformation measuring mechanism 3. The fixed base 1 is used to fix the shaft-type part 10.

[0046] Furthermore, the force-applying mechanism 2 includes a rotating lever 21 and a force-applying element 22. The rotating lever 21 has a first rotating end 211 and a second rotating end 212, which are located at the first rotating end 211. The second rotating end 212 can abut against the measurement position of the shaft part 10, so that a force is applied to the measurement position through the force-applying element 22, causing the shaft part 10 to bend and deform. The deformation measuring mechanism 3 includes a displacement measuring device 31, which is arranged along a first direction corresponding to the measurement position to measure the deformation at the measurement position. The first direction is the radial direction of the shaft part 10, and the deformation is the displacement of the measurement position in the first direction.

[0047] Specifically, when the shaft part 10 is fixed on the fixed base 1, the shaft part 10 needs to remain stationary and free from external forces to ensure the accuracy of the test results. Simultaneously, when the measurement position of the shaft part 10 is located at one end, the other end of the shaft part 10 needs to be securely fixed to prevent overall displacement.

[0048] When measuring the deformation of a shaft-like part 10, it is necessary to ensure the fixing effect of the fixed base 1 on the shaft-like part 10 to prevent the shaft-like part 10 from shifting. This ensures that the displacement at the measurement position is due to bending, thus avoiding affecting the accuracy of the measurement results. For example, when the measurement position of the shaft-like part 10 is located at one end, the other end of the shaft-like part 10 or a position near the other end can be securely fixed to the fixed base 1. Alternatively, when the measurement position of the shaft-like part 10 is located in the middle, both ends of the shaft-like part 10 can be securely fixed to the fixed base 1.

[0049] The rotating lever 21 is a rod-shaped structure with two opposing ends along its extension direction. The first rotating end 211 of the rotating lever 21 can be understood as a portion of the lever near one end, rather than the endpoint formed by that end. Correspondingly, the second rotating end 212 of the rotating lever 21 can be understood as a portion of the lever near the other end. That is, when the force-applying element 22 is located at the first rotating end 211, it can be positioned at any location near one end of the rotating lever 21. Similarly, any location of the second rotating end 212 can also achieve contact with the shaft-like part 10.

[0050] Furthermore, the displacement measuring device 31 is positioned along the first direction corresponding to the measurement position. That is, when the second rotating end 212 directly applies a force to the measurement position of the shaft part 10, the displacement measuring device 31 can measure the deformation at that position. At this time, the measurement position is the main stress location, and its deformation is the largest. Therefore, by measuring the deformation at the measurement position, it is possible to directly correlate it with the applied force, thereby obtaining the relationship between the applied force and the deformation, resulting in better correspondence in the measurement results.

[0051] In specific implementation, when the force-applying component 22 is located at the first rotating end 211, it can apply a force to the first rotating end 211. Since the rotating lever 21 is a lever structure, that is, at this time, the second rotating end 212 can also apply a force to the shaft part 10 that it abuts. In this way, the measuring position of the shaft part 10 will bend and deform due to the force acting on it. Correspondingly, the displacement measuring device 31 is set at the measuring position, so that it can measure the amount of radial offset of the measuring position along the shaft part 10, that is, it can reflect the degree of deformation of the shaft part 10 at the measuring position.

[0052] It is evident that by setting up the rotating lever 21, it is more convenient to apply force to the shaft part 10. Furthermore, when applying force to the shaft part 10 through the rotating lever 21 and the force-applying component 22, it will not affect the displacement measuring device 31, which is also located near the measuring position, in measuring the shaft part 10. The entire structure has a high degree of integration, is more flexible, and is easier to operate.

[0053] It should be noted that the two lever arms of the rotating lever 21 can be of the same or different lengths. When the two lever arms of the rotating lever 21 are of the same length, the force applied to the first rotating end 211 is the same as the force applied to the measuring position by the second rotating end 212. In this way, the operator does not need to convert and calculate the magnitude of the force, making the measurement simpler and more convenient. If the two lever arms of the rotating lever 21 are different, a smaller force can be applied to the first rotating end 211 to achieve a larger force on the measuring position, making the operation easier. Alternatively, when the force applied by the force-applying component 22 is too large, the force acting on the measuring position can be reduced by the difference in lever arm length, thereby avoiding damage to the shaft parts 10 due to excessive force.

[0054] In summary, the deformation measuring device provided in this application uses a fixed base 1 to fix a shaft-like part 10. Then, a force-applying mechanism 2 is used, where the first rotating end 211 of the rotating lever 21 is fitted with a force-applying element 22. The second rotating end 212 of the rotating lever 21 abuts against the shaft-like part 10, thereby applying the force of the force-applying element 22 to the shaft-like part 10 through the lever structure, causing the shaft-like part 10 to bend and deform. Finally, the displacement measuring device 31 of the deformation measuring mechanism 3 is positioned at the corresponding measurement location to measure the deformation at that location. This configuration allows for direct measurement of the deformation of the shaft-like part 10 under different forces, thus improving the detection efficiency of the steering system. Furthermore, this deformation measuring device has a simple structure and is easy to operate. The rotating lever 21 makes applying force to the shaft-like part 10 more convenient, and the overall structure has a high degree of integration, making operation more flexible.

[0055] For example, in this embodiment, the displacement measuring instrument 31 of the deformation measuring mechanism 3 can be a dial indicator or a micrometer. Specifically, when no force is applied to the shaft part 10 by the force applying mechanism 2, the end of the measuring rod of the dial indicator or micrometer is in contact with the measurement position. When the force applying mechanism 2 pushes the shaft part 10 to deform by rotating the lever 21, the measurement position shifts due to the bending of the shaft part 10. Since the end of the measuring rod of the dial indicator or micrometer is in contact with the measurement position, the dial indicator or micrometer can directly obtain the offset of the measurement position, thereby reflecting the degree of bending of the shaft part 10.

[0056] Of course, in other embodiments, the displacement measuring device 31 can also be implemented by other instruments, such as displacement sensors.

[0057] like Figure 2 As shown, in some embodiments, the fixed base 1 includes a base 11, a support member 12, and a fixing member 13. The support member 12 is disposed on top of the base 11 and has a placement groove 14 with a top opening, which is used to place the shaft-like part 10. Specifically, the placement groove 14 extends through both sides of the support member 12 along a second direction, which is the axial direction of the shaft-like part 10.

[0058] The placement groove 14 facilitates the placement of shaft parts 10 and allows for direct positioning of the shaft parts 10. Furthermore, the placement groove 14 extends along the second direction through both sides of the support member 12, thereby facilitating the support of the shaft parts 10. At the same time, the portion of the shaft parts 10 located outside the placement groove 14 is correspondingly positioned with the force application mechanism 2 and the deformation measuring mechanism 3.

[0059] In practice, the placement groove 14 can be formed by recessing the top surface of the support member 12, as detailed in the following document. Figure 2As shown. Furthermore, the groove shape of the placement groove 14 can be triangular, arc-shaped, etc. This embodiment uses a triangular design to provide better positioning for the shaft-like parts 10 located within the placement groove 14.

[0060] In addition, the base 11 specifically includes a base plate 111, and the support member 12 is disposed on the base plate 111, thereby further ensuring structural stability. In order to improve the structural stability of the measuring device, the base plate 111 can be made of a material with a high density, such as a metal plate or a cement board, or the base plate 111 can be designed to be larger in size.

[0061] Furthermore, the fastener 13 is provided with an opening at the top of the placement groove 14, and the fastener 13 is used to fix the shaft part 10 located in the placement groove 14.

[0062] When the shaft part 10 is placed in the placement slot 14, a force is applied to the shaft part 10 by the force application mechanism 2. Therefore, if the shaft part 10 is not fixed, it will move during the force application process, affecting the accuracy of the test results. Therefore, by setting a fixing member 13 at the top opening of the placement slot 14, the shaft part 10 can be fixed in the placement slot 14, preventing it from moving during the force application process, thereby ensuring the accuracy of the measurement results.

[0063] In practice, the gap between the fixing member 13 and the placement groove 14 needs to be sufficient to allow the shaft part 10 to pass through completely, so as to avoid the setting of the fixing member 13 affecting the placement of the shaft part 10.

[0064] like Figure 3 As shown, in some embodiments, the fixed base 1 further includes a first bracket 15, which is disposed on the base 11 and extends above the opening of the placement groove 14. The fixing member 13 is disposed on the first bracket 15 at the position above the opening of the placement groove 14 and is movably connected to the first bracket 15 so as to move relative to the first bracket 15 toward or away from the placement groove 14.

[0065] By movably connecting the fixing member 13 to the first bracket 15, the fixing member 13 can move relative to the first bracket 15 towards or away from the placement groove 14, facilitating the placement of the shaft part 10 within the placement groove 14 and securing it after placement. In other words, when the shaft part 10 needs to be placed, the fixing member 13 is moved away from the placement groove 14, thus creating more space above the placement groove 14, making it easier to insert the shaft part 10. After placement, the fixing member 13 can be further moved to abut against the shaft part 10, ensuring the shaft part 10 is fixed within the placement groove 14 and preventing relative movement to a certain extent.

[0066] like Figure 3 As shown, in some embodiments, the first bracket 15 is provided with an adjustment hole 151, which extends toward the placement groove 14. The fixing member 13 includes a rotating rod 131 and an abutment 132. The rotating rod 131 passes through the adjustment hole 151, and the abutment 132 is provided at one end of the rotating rod 131 toward the placement groove 14. Furthermore, the wall of the adjustment hole 151 is provided with an internal thread, and the side wall of the rotating rod 131 is provided with an external thread that matches the internal thread.

[0067] This configuration allows the fixing member 13 to be fixed by means of the threaded engagement between the rotating rod 131 and the adjusting hole 151. By rotating the rotating rod 131, the abutment 132 at one end of the rotating rod 131 can be moved toward the placement groove 14 or away from the placement groove 14. This achieves the fixing of the shaft part 10, facilitates placement before measurement and timely removal after measurement, is easy to operate, and allows for controllable movement speed, which can avoid damage to the shaft part 10 to a certain extent.

[0068] In practice, the abutment 132 can be made of rubber to further prevent damage to the surface of the shaft part 10 when it comes into contact with the shaft part 10. In addition, a rotating arm 133 can be provided at the other end of the rotating rod 131 to make it easier for the operator to rotate the rotating rod 131.

[0069] like Figure 2 As shown, in some embodiments, the force-applying mechanism 2 is located on one side of the base 11 along the second direction, and the support member 12 is slidably connected to the base 11 along the second direction so as to be movable toward or away from the force-applying mechanism 2.

[0070] This configuration allows for an adjustable distance between the support member 12 and the force application mechanism 2, enabling flexible adjustment of the fixed position of the shaft-type part 10, or changing the fixed position according to different shaft-type parts 10, to ensure the fixing effect and the accuracy of the measurement results. Furthermore, the measurement position of the shaft-type part 10 can be changed by adjusting the position of the support member 12, thereby improving the flexibility of the measuring device.

[0071] like Figure 2 , Figure 4 and Figure 5 As shown, in one specific implementation, the top of the base 11 is provided with a first sliding groove 112, which extends along the second direction. The bottom of the support member 12 is provided with a first connecting hole corresponding to the position of the first sliding groove 112. The support member 12 and the base 11 are slidably connected by fasteners passing through the first sliding groove 112 and the first connecting hole.

[0072] This configuration allows the support member 12 to slide smoothly relative to the base 11. Furthermore, the first slide groove 112 ensures that the orientation of the support member 12 is fixed, thereby ensuring that the orientation of the placement groove 14 is fixed. In addition, the support member 12 can be fixed in position whenever it slides to any position of the first slide groove 112 using fasteners.

[0073] In this embodiment, two first sliding grooves 112 are provided, and the two first sliding grooves 112 are arranged parallel to each other. Correspondingly, a connecting hole is provided on the base 11 for each first sliding groove 112. This further enhances the fixing effect between the support member 12 and the base 11. Of course, in other embodiments, the number of first sliding grooves 112 can be set to other numbers.

[0074] like Figure 2 As shown, in some embodiments, the number of support members 12 may be at least two, with at least two support members 12 arranged at intervals along a first direction on the top of the base 11, and the placement grooves 14 on the at least two support members 12 correspondingly arranged along the same extending direction. This arrangement can improve the fixing effect on the shaft-like parts 10, thereby further ensuring the accuracy of the measurement results.

[0075] In this specific implementation, one portion of the support member 12 is slidably connected to the base 11, while the other portion is fixedly installed on the base 11. The other portion of the support member 12 fixed to the base 11 is fixedly connected by having a support member connection hole 116 on the base 11, with fasteners passing through both the support member connection hole 116 and the first connection hole. In other embodiments, all support members 12 can be slidably connected to the base 11.

[0076] Furthermore, since the support member 12 is slidable relative to the base 11, the fixing member 13, which is disposed opposite to the support member 12, can also be configured to be slidable relative to the base 11. Specifically, a second sliding groove 113 can be formed on the base 11, and a second connecting hole is provided at the bottom of the fixing member 13 corresponding to the second sliding groove 113. The fixing member 13 and the second sliding groove 113 are slidably connected by fasteners passing through the second sliding groove 113 and the second connecting hole, as shown in the figure. Correspondingly, for the fixing member 13 relative to the support member 12 fixedly disposed to the base 11, a fixing member connecting hole 117 can be formed on the base 11, and a fixed connection can be achieved by fasteners passing through both the fixing member connecting hole 117 and the second connecting hole.

[0077] like Figure 2As shown, in some embodiments, the force-applying mechanism 2 specifically includes a second bracket 23, which is disposed on one side of the base 11 along the second direction. The second bracket 23 has a rod connection hole 231, and the rotating lever 21 passes through the rod connection hole 231. Furthermore, a rotating shaft 24 is disposed in the rod connection hole 231, and the rotating lever 21 is rotatably connected to the second bracket 23 through the rotating shaft 24.

[0078] This configuration allows the second bracket 23 to support the rotating lever 21, enabling the rotating lever 21 to abut against the shaft part 10. Furthermore, the rod connection hole 231 allows the rotating lever 21 to rotate relative to the shaft part 10, enabling the second rotating end 212 of the rotating lever 21 to apply force to the shaft part 10.

[0079] In a specific implementation, the rotating shaft 24 can be inserted through the second bracket 23 and pass through the rod connection hole 231. The part of the rotating lever 21 located inside the rod connection hole 231 is provided with a corresponding clearance hole. The rotating shaft 24 passes through the clearance hole, thereby fixing the rotating lever 21 inside the rod connection hole 231. At the same time, the rotating shaft 24 enables the rotating lever 21 to rotate relative to the second bracket 23.

[0080] To enable the rotating lever 21 to rotate smoothly, the rod connection hole 231 can be set relatively large to provide space for the rotation of the rotating lever 21. Furthermore, the height of the rod connection hole 231 can correspond to the height of the placement groove 14 so that the rotating lever 21 can abut against the shaft part 10 in a basically horizontal state.

[0081] like Figure 2 As shown, in some embodiments, the second rotating end 212 of the rotating lever 21 is correspondingly arranged with the displacement measuring device 31 in the vertical direction, and together they form a test gap for the shaft part 10 to pass through. The placement groove 14 extends in the horizontal direction, and the test gap and the placement groove 14 are correspondingly arranged in the second direction.

[0082] In other words, the placement groove 14 extends in the same direction as the test gap, thus corresponding to the fixed position and measurement position of the shaft part 10. Furthermore, the placement groove 14 extends horizontally, allowing the shaft part 10 located within it to also extend horizontally. This ensures that when the rotating lever 21 applies force to the measurement position of the shaft part 10, the force is radially along the shaft part 10, allowing the deformation of the shaft part 10 to directly correspond to the applied force without requiring force conversion or directional decomposition.

[0083] Furthermore, the force-applying component 22 is a gravity weight. Using a gravity weight for the force-applying component 22 makes the structure easier to obtain, provides a clear force, allows for adjustments to different gravities, and makes operation more convenient. In practice, a hook or a platform can be installed at the first rotating end 211 of the rotating lever 21 to fix the gravity weight.

[0084] Furthermore, since the lever 21 rotates when the force-applying component 22 acts on the shaft part 10 via the rotating lever 21, the force-applying component 22 moves downward. Therefore, in order to provide more space for the movement of the force-applying component 22, the positions of the support component 12, the force-applying mechanism 2, and the deformation measuring mechanism 3 can all be adjusted upward along the height direction.

[0085] Therefore, in some embodiments, the base 11 may further include a plurality of support plates 114 and a top plate 115. Specifically, the plurality of support plates 114 are arranged vertically, with their bottoms connected to the top surface of the base plate 111, and the top plate 115 is disposed on top of the plurality of support plates 114, so that the top plate 115 is supported above the base plate 111 by the support plates 114. Based on this, a first sliding groove 112 may be disposed on the top plate 115, and the support member 12 is correspondingly slidably connected to the top plate 115.

[0086] like Figures 6-8 As shown, the height of the fastener 13 needs to match the height of the support 12. For example, the first bracket 15 of the fastener 13 can include a first support 152 and a first extension rod 153. The first support 152 is connected and fixed to the bottom plate 111 of the base 11. The first extension rod 153 is disposed on the top of the first support 152 and extends toward the top opening of the placement groove 14. The fastener 13 is correspondingly disposed on the first extension rod 153.

[0087] Based on this, the second bracket 23 of the force application mechanism 2 can be directly set on the support plate 114 or the top plate 115, and located on one side of the support plate 114 or the top plate 115 along the second direction, so as to correspond to the placement groove 14.

[0088] In addition, to facilitate the corresponding setting of the displacement measuring device 31 and the rotating lever 21, the displacement measuring device 31 can be fixed on the second bracket 23 so that its position relative to the installation gap and the rotating lever 21 is fixed.

[0089] like Figure 9As shown, in one specific implementation, the deformation measuring mechanism 3 further includes a fixed rod 32, which is mounted on the second bracket 23 and, together with the second rotating end 212, forms a test gap for the shaft-like part 10 to pass through. The displacement measuring device 31 is positioned at the corresponding location of the second rotating end 212 on the fixed rod 32. This arrangement ensures a better positional correspondence between the displacement measuring device 31 and the second rotating end 212 of the rotating lever 21, thereby further guaranteeing the accuracy of the measurement results.

[0090] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A deformation measuring device for shaft-type parts, characterized in that, include: Fixed base, used to fix shaft-type parts; The force-applying mechanism includes a rotating lever and a force-applying component. The rotating lever has a first rotating end and a second rotating end opposite to each other. The force-applying component is disposed at the first rotating end, and the second rotating end is capable of abutting against the measuring position of the shaft part, so that the force-applying component applies a force to the measuring position, causing the shaft part to bend and deform. A deformation measuring mechanism includes a displacement measuring device, which is arranged along a first direction corresponding to the measuring position to measure the deformation at the measuring position; Wherein, the first direction is the radial direction of the shaft-like part, and the deformation amount is the displacement of the measurement position in the first direction.

2. The deformation measuring device according to claim 1, characterized in that, The fixed base includes a base, a support member, and a fixing member, wherein the support member is disposed on the top of the base; The support member has a placement groove with a top opening, which extends along a second direction to both sides of the support member, and is used to place the shaft-type parts. The fastener is positioned with its top opening facing the placement groove, and the fastener is used to secure shaft-type parts located within the placement groove; Wherein, the second direction is the axial direction of the shaft-like part.

3. The deformation measuring device according to claim 2, characterized in that, The fixing base also includes a first bracket, which is disposed on the base and extends above the opening of the placement slot; The fixing member is located above the opening of the placement slot on the first bracket, and the fixing member is movably connected to the first bracket so as to move relative to the first bracket toward or away from the placement slot.

4. The deformation measuring device according to claim 3, characterized in that, The first bracket has an adjustment hole that extends toward the placement groove. The fixing member includes a rotating rod and an abutment. The rotating rod passes through the adjustment hole, and the abutment is located at the end of the rotating rod facing the placement groove. The adjusting hole has an internal thread on its wall, and the rotating rod has an external thread on its side wall that matches the internal thread.

5. The deformation measuring device according to claim 2, characterized in that, The number of the support members is at least two, and the at least two support members are arranged at intervals along the first direction on the top of the base; The placement slots on at least two of the support members are correspondingly arranged along the same extending direction.

6. The deformation measuring device according to claim 2, characterized in that, The force-applying mechanism is located on one side of the base along the second direction, and the support member is slidably connected to the base along the second direction so as to be movable toward or away from the force-applying mechanism.

7. The deformation measuring device according to claim 6, characterized in that, The top of the base is provided with a first sliding groove, which extends along the second direction; The bottom of the support member is provided with a first connecting hole at the position corresponding to the first sliding groove. The support member and the base are slidably connected by fasteners passing through the first sliding groove and the first connecting hole.

8. The deformation measuring device according to any one of claims 2-7, characterized in that, The force-applying mechanism includes a second bracket, which is disposed on one side of the base along the second direction. The second bracket has a rod connection hole, and the rotating lever passes through the rod connection hole. A rotating shaft is provided inside the rod connection hole, and the rotating lever is rotatably connected to the second bracket through the rotating shaft.

9. The deformation measuring device according to claim 8, characterized in that, The second rotating end and the displacement measuring device are arranged vertically and together form a test gap for the shaft part to pass through. The placement groove extends horizontally and the test gap and the placement groove are arranged in the second direction. The force-applying component is a gravity weight.

10. The deformation measuring device according to claim 8, characterized in that, The deformation measuring mechanism further includes a fixed rod, which is mounted on the second bracket and together with the second rotating end forms a test gap for the shaft-like part to pass through. The displacement measuring device is mounted at the position of the fixed rod corresponding to the second rotating end.

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