Clamping device for multi-dimensional mechanical detection of automobile steering pull rod

Abstract

The invention relates to the technical field of automobile part performance test instruments, and provides a clamping device for multi-dimensional mechanical detection of an automobile steering pull rod, and the clamping device comprises a clamping piece, a connecting piece, a multi-dimensional feeding shaft, a base, a cooling cylinder and a top seat, the top seat is fixedly arranged at the top of the cooling cylinder, and the base is coaxially arranged at the outer side of the cooling cylinder; the connecting piece is radially, fixedly and coaxially assembled on the inner side of the lower portion of the cooling cylinder, the clamping piece is coaxially assembled in a cavity formed in the inner side of the top base, the inner side of the cooling cylinder and the inner side of the connecting piece, and the upper portion of the multi-dimensional feeding shaft is rotatably and coaxially assembled on the inner side of the portion, below the clamping piece, of the connecting piece. And when the multi-dimensional feeding shaft is rotated in the radial direction, the clamping piece and the connecting piece can synchronously and axially move, and when the multi-dimensional feeding shaft is rotated in the radial direction, the clamping piece can synchronously and radially rotate. According to the invention, high-precision clamping can be provided, periodic tests of tensile, compressive and torsional properties on the same part can be realized, and more accurate and comprehensive detection results can be provided.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts performance testing instruments, and in particular to a clamping device for multi-dimensional mechanical testing of an automobile steering rod. Background Art

[0002] With the rapid development of the automobile industry, consumers and manufacturers have increasingly higher requirements for the safety and reliability of automobiles. Among many automobile parts, the steering rod plays a vital role. It directly connects the steering system and the wheels. Its performance directly affects the vehicle's handling performance and driving safety. The automobile steering rod must not only withstand the tensile stress and compressive stress from the vehicle weight and driving power, but also withstand the torsional stress caused by the steering operation. The complex combination of these stresses puts strict requirements on the material selection, geometric structure design and manufacturing process of the steering rod. The steering rod must be made of high-strength and high-toughness materials, and the structural design must be able to reasonably disperse and withstand these stresses to prevent breakage or deformation under extreme working conditions and ensure the stability and safety of the vehicle under various driving conditions.

[0003] Mechanical testing is a key means of quality verification and application simulation verification of automobile steering rods. In practical applications, the existing steering rod testing technology has the following shortcomings: 1. Insufficient clamping accuracy: When conducting mechanical property testing, the clamping accuracy of the steering rod is crucial to obtaining accurate and reliable test data. The existing clamping method cannot accurately simulate the stress conditions under actual working conditions, resulting in deviations in the test results. This deviation not only affects the accurate evaluation of the steering rod performance, but may also mislead the direction of design improvement, thereby affecting the quality and safety of the final product; 2. The process is cumbersome and costly: Different fixtures and equipment need to be used according to different mechanical performance requirements, which not only increases the complexity and cost of the test, but also reduces the efficiency of the test; 3. Lack of support for multi-dimensional performance testing: It is impossible to conduct multi-dimensional performance cycle tests on the same part, resulting in a huge difference between the test simulation scenario and the actual application scenario. This difference makes it difficult for the test results to fully reflect the true performance of the steering rod in actual use, especially when facing complex and changeable driving conditions. This limits the comprehensive evaluation of the comprehensive performance of the steering rod and makes it difficult for manufacturers to obtain comprehensive data on the performance of the steering rod under different working conditions.

[0004] Therefore, how to provide a clamping device for multi-dimensional mechanical testing of automobile steering rods, which can improve clamping accuracy, reduce testing costs, and improve testing efficiency, while being able to simulate the complex stresses that the steering rods are subjected to in actual applications, provide a high-precision clamping method, and realize periodic testing of tensile, compressive and torsional performance on the same part, thereby truly simulating actual application scenarios, providing more accurate and comprehensive test results, and realizing a comprehensive evaluation of multi-dimensional performance, providing more powerful data support for the design and improvement of steering rods, so as to improve the performance and reliability of steering rods, has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of this, in order to overcome the deficiencies of the prior art, the present application aims to provide a clamping device for multi-dimensional mechanical testing of an automobile steering rod.

[0006] The present application provides a clamping device for multi-dimensional mechanical testing of an automobile steering rod, the device comprising: a clamping member, a connecting member, a multi-dimensional feed shaft, a base, a cooling cylinder and a top seat, wherein the top seat is fixedly arranged on the top of the cooling cylinder, the base is coaxially arranged on the outside of the cooling cylinder, the connecting member is radially fixedly coaxially assembled on the lower inner side of the cooling cylinder, the clamping member is coaxially assembled in the cavity of the top seat, the cooling cylinder and the inner side of the connecting member, the upper part of the multi-dimensional feed shaft is rotatably coaxially assembled on the inner side of the connecting member below the clamping member, when the multi-dimensional feed shaft is moved axially, the clamping member and the connecting member can be synchronously moved axially, and when the multi-dimensional feed shaft is radially rotated, the clamping member can be synchronously rotated radially.

[0007] Optionally, in the clamping device for multi-dimensional mechanical testing of an automobile steering rod of the present application, the clamping part includes a support seat, a clamping cylinder, a clamping head, and a support column integrally connected from bottom to top and arranged integrally on the upper part of the support seat and coaxially arranged on the inner side of the clamping cylinder, a first rotating groove is arranged on the upper part of the support seat, and a plurality of driving grooves are arranged on the lower circumference of the support seat.

[0008] Optionally, in the clamping device for multi-dimensional mechanical testing of an automobile steering rod of the present application, the outer diameter of the clamping head increases sequentially from bottom to top, and a plurality of through curved grooves are arranged on the circumference of the clamping head.

[0009] Optionally, in the clamping device for multi-dimensional mechanical testing of an automobile steering rod of the present application, the connecting part includes, from bottom to top, an integrally connected connecting part bottom, a connecting part side, and a connecting part top, an inner side of the connecting part bottom is coaxially arranged with an axial hole and a second rotation groove from the inside to the outside, the connecting part top is an annular protrusion extending toward the inner side of the connecting part side, a first annular rotation protrusion is integrally arranged at the bottom of the connecting part top, the first rotation protrusion matches the first rotation groove of the clamp, and a plurality of first sliding grooves are circumferentially arranged on the outer side wall of the connecting part.

[0010] Optionally, in the clamping device for multi-dimensional mechanical testing of an automobile steering rod of the present application, the multi-dimensional feed shaft includes a feed shaft body, a first annular portion arranged on the upper part of the feed shaft body, and a second annular portion arranged on the top of the feed shaft body. A second annular rotating protrusion is arranged at the bottom of the first annular portion, and the second rotating protrusion matches the second rotating groove of the connecting member. A plurality of driving protrusions are arranged on the top circumference of the second annular portion, and the driving protrusion matches the driving groove of the clamping member.

[0011] Optionally, in the clamping device for multi-dimensional mechanical testing of an automobile steering rod of the present application, the base includes an annular fastening base and a fixing cylinder integrally connected to the annular fastening base, a plurality of second sliding grooves are circumferentially arranged on the inner wall of the fixing cylinder, two through grooves are symmetrically arranged on the fixing cylinder, a plurality of through first fixing holes are arranged on the side wall of the fixing cylinder, and a plurality of first fastening holes are circumferentially arranged on the annular fastening base.

[0012] Optionally, in the clamping device for multi-dimensional mechanical testing of an automobile steering rod of the present application, the cooling cylinder includes a cooling cylinder body which is a rotating body as a whole, a clamping cylinder assembly cavity is coaxially arranged inside the cooling body, a spiral channel is arranged on the cooling cylinder body outside the clamping cylinder assembly cavity, two DC channels are symmetrically arranged on the cooling cylinder body, the DC channels are connected to the spiral channels, a plurality of first slide rail protrusions are arranged on the outer circumference of the cooling cylinder body, the first slide rail protrusions match the second slide groove of the base, an annular connecting part assembly cavity is coaxially arranged on the inner side of the bottom of the cooling cylinder body, a plurality of second slide rail protrusions are arranged on the circumference of the inner wall of the connecting part assembly cavity, the second slide rail protrusions match the first slide groove arranged on the circumference of the outer wall of the connecting part, a plurality of non-through second fixing holes are arranged on the side wall of the cooling cylinder body, the second fixing holes match the first fixing holes on the side wall of the base, and a plurality of second fastening holes are arranged on the top circumference of the cooling cylinder body.

[0013] Optionally, in the clamping device for multi-dimensional mechanical testing of an automobile steering tie rod of the present application, the inner diameter of the assembly cavity of the clamping tube of the cooling cylinder is larger than the outer diameter of the clamping tube of the clamping member.

[0014] Optionally, in the clamping device for multi-dimensional mechanical testing of an automobile steering rod of the present application, two symmetrically arranged direct current channels on the outside of the cooling cylinder are assembled in two through grooves of the base.

[0015] Optionally, in the clamping device for multi-dimensional mechanical testing of automobile steering rods of the present application, the top seat as a whole is a rotating body, and the inner side of the top seat is coaxially arranged with a connected workpiece hole and a clamping head assembly cavity from top to bottom, the inner diameter of the clamping head assembly cavity is larger than the outer diameter of the clamping head, and a plurality of third fastening holes are coaxially arranged on the top seat, and the third fastening holes match the second fastening holes on the top of the cooling cylinder.

[0016] The clamping device for multi-dimensional mechanical testing of automobile steering rods of the present application has the following beneficial technical effects: 1. It can realize the clamping of axial tension, axial pressure and radial torsion testing of the steering rod on the basis of one clamping, which significantly simplifies the testing process and completes the testing of multiple mechanical properties in the same clamping, without the need to frequently replace the fixture or re-clamp the crankshaft, thereby improving the testing efficiency and accuracy; 2. It can provide low-temperature scene simulation conditions for the steering rod in mechanical performance testing through low-temperature cooling and temperature control, so that the testing device can detect the mechanical properties under different low-temperature conditions, and further restore the real application conditions in multiple dimensions; 3. Easy assembly and disassembly, reducing the preparation time before testing and the cleaning time after testing, improving the overall work efficiency, and also reducing the equipment loss caused by frequent clamping and disassembly; 4. Stable clamping and high clamping accuracy can ensure the accurate position of the steering rod during the detection process, avoid detection errors caused by improper clamping, improve the reliability and repeatability of the test results, and ensure the accuracy of the test data.

[0017] The clamping device for multi-dimensional mechanical testing of automobile steering rods of the present application improves the efficiency and accuracy of multi-dimensional mechanical performance testing of steering rods through comprehensive structural design, and provides a more comprehensive performance evaluation by simulating real application conditions. It is of great significance to improve the reliability and performance of automobile steering rods, reduce production costs, and optimize product quality control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is an exploded structural example diagram of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the application; Figure 2 This is a cross-sectional structural example diagram of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Figure 3 This is an exemplary diagram of the cross-sectional structure of a clamping member of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Figure 4 This is a structural example diagram of a clamping member of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Figure 5This is an exemplary diagram of the cross-sectional structure of a connecting piece of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Figure 6 This is a structural example diagram of a connecting piece of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Figure 7 This is a structural example diagram of a multi-dimensional feed shaft of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Figure 8 Another structural example diagram of the multi-dimensional feed shaft of the clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Fig. 9 This is a structural example diagram of a base of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Fig.10 This is a structural example diagram of a cooling cylinder of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Fig.11 Another structural example diagram of the cooling cylinder of the clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Fig.12 This is a structural example diagram of a top seat of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Fig.13 This is a clamping example diagram of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; Fig.14 This is another example diagram of clamping of the clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application; In the figure, 1-clamping member, 2-connecting member, 3-multi-dimensional feed shaft, 4-base, 5-cooling cylinder, 6-top seat, 11-support seat, 12-clamping cylinder, 13-clamping head, 14-support column, 15-first rotating groove, 16-driving groove, 17-curved groove, 21-bottom of connecting member, 22-side of connecting member, 23-top of connecting member, 24-axial hole, 25-second rotating groove, 26-first rotating protrusion, 27-first slide groove, 31-feed shaft body, 32-first annular portion, 33-second annular portion, 34- The second rotating protrusion, 35-driving protrusion, 41-annular fastening base, 42-fixing cylinder, 43-second slide groove, 44-through groove, 45-first fixing hole, 46-first fastening hole, 51-cooling cylinder body, 52-clamping cylinder assembly cavity, 53-spiral channel, 54-DC channel, 55-first slide rail protrusion, 56-connecting piece assembly cavity, 57-second slide rail protrusion, 58-second fixing hole, 59-second fastening hole, 61-workpiece hole, 62-clamping head assembly cavity, 63-third fastening hole, 7-steering rod. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0021] It should be noted that the following embodiments and features in the embodiments may be combined with each other in the absence of conflict; and, based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making any creative work are within the scope of protection of the present disclosure.

[0022] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein may be used to implement this device and / or practice this method.

[0023] Figure 1 This is an exploded structural example diagram of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the application. Figure 2 FIG. 4 is a cross-sectional structural example diagram of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application, as shown in FIG. Figure 1 and Figure 2 As shown, the clamping device for multi-dimensional mechanical testing of the automobile steering rod of this embodiment includes: The clamping member 1, the connecting member 2, the multi-dimensional feed shaft 3, the base 4, the cooling cylinder 5 and the top seat 6, the top seat 6 is fixedly arranged on the top of the cooling cylinder 5, the base 4 is coaxially arranged on the outside of the cooling cylinder 5, the connecting member 2 is radially fixedly coaxially assembled on the lower inner side of the cooling cylinder 5, the clamping member 1 is coaxially assembled in the cavity inside the top seat 6, the cooling cylinder 5 and the connecting member 2, and the upper part of the multi-dimensional feed shaft 3 is rotatably coaxially assembled on the inner side of the connecting member 2 below the clamping member 1. When the multi-dimensional feed shaft 3 is axially moved, the clamping member 1 and the connecting member 2 can be synchronously axially moved, and when the multi-dimensional feed shaft 3 is radially rotated, the clamping member 1 can be synchronously radially rotated.

[0024] Figure 3 This is a cross-sectional structural example diagram of a clamping member of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application. Figure 4 FIG. 1 is a structural example diagram of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application. Figure 3 and Figure 4 As shown, the clamping member 1 of this embodiment includes a support seat 11, a clamping cylinder 12, a clamping head 13, and a support column 14 which is integrally connected from bottom to top and is arranged on the upper part of the support seat 11 and coaxially arranged on the inner side of the clamping cylinder 12. As an optional example, in this embodiment, a first rotating groove 15 is arranged on the upper part of the support seat 11. A plurality of driving grooves 16 are arranged on the circumference of the lower part of the support seat 11. In this embodiment, the cross-sectional shape of the driving groove 16 is a fan-shaped. When implementing the clamping device for multi-dimensional mechanical testing of the automobile steering tie rod of this application, the cross-sectional shape of the driving groove 16 can also be set to other shapes, such as elliptical, circular or polygonal. The outer diameter of the clamping head 13 of this embodiment increases from bottom to top, and a plurality of through curved grooves 17 are arranged on the circumference of the clamping head 13. In practical applications, the curved groove 17 on the clamping head 13 can be a broken line or a circular arc. The arrangement of the curved groove 17 can ensure the clamping strength of the clamping member 1 while having excellent elasticity and toughness. In this embodiment, the clamping head 13 with increasing outer diameter from bottom to top can improve the stability of the clamping member 1 during the clamping process. The support column 14 in this embodiment is used to support the workpiece to be tested during compression testing. Specifically, when the multi-dimensional feed shaft 3 is moved upward, the support column 14 contacts and transmits pressure to the workpiece to be tested.

[0025] Figure 5 FIG. 1 is a cross-sectional structural example diagram of a connecting piece of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application, as shown in FIG. Figure 5 As shown, the connecting member 2 of this embodiment includes, from bottom to top, an integrally connected connecting member bottom 21, a connecting member side 22 and a connecting member top 23. An axial hole 24 and a second rotation groove 25 are coaxially arranged on the inner side of the connecting member bottom 21 from the inside to the outside. The connecting member top 23 is an annular protrusion extending toward the inner side of the connecting member side 22. An annular first rotation protrusion 26 is integrally arranged on the bottom of the connecting member top 23, and the first rotation protrusion 26 matches the first rotation groove 15 of the clamping member 1. Figure 6 FIG. 1 is a structural example diagram of a connecting member of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application, as shown in FIG. Figure 6 As shown, a plurality of first sliding grooves 27 are arranged on the circumference of the outer wall of the connecting member 2 .

[0026] In this embodiment, the first rotating protrusion 26 and the first rotating groove 15 are assembled to ensure the stability of the connecting member 2, realize the linkage between the connecting member 2 and the clamping member 1 when moving downward, and realize the decoupling and separation of the connecting member 2 and the clamping member 1 when moving radially. That is, when the multi-dimensional feeding shaft 3 is moved downward, the connecting member 2 pulls the clamping member 1 to move downward synchronously through the assembly combination of the first rotating protrusion 26 and the first rotating groove 15; when the multi-dimensional feeding shaft 3 is radially rotated, the connecting member 2 does not rotate radially, but the clamping member 1 rotates synchronously.

[0027] Figure 7 This is a structural example diagram of a multi-dimensional feed shaft of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application. Figure 8 FIG. 2 is another structural example diagram of the multi-dimensional feed shaft of the clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application, as shown in FIG. Figure 7 and Figure 8 As shown, the multi-dimensional feed shaft 3 of this embodiment includes a feed shaft body 31, a first annular portion 32 arranged on the upper part of the feed shaft body 31, and a second annular portion 33 arranged on the top of the feed shaft body 31. A second annular rotation protrusion 34 is arranged at the bottom of the first annular portion 32, and the second rotation protrusion 34 matches the second rotation groove 25 of the connecting member 2. A plurality of driving protrusions 35 are arranged on the top circumference of the second annular portion 33, and the driving protrusion 35 matches the driving groove 16 of the clamping member 1. The multi-dimensional feed shaft 3 of this embodiment is connected to a driving device with radial and axial outputs arranged on a corresponding detection device, such as a servo motor or a hydraulic driving device with telescopic power output and radial rotation output. Under the action of the driving device, the multi-dimensional feed shaft 3 can move upward, downward or rotate radially.

[0028] In this embodiment, the bottom of the multi-dimensional feed shaft 3 is assembled above the bottom of the connecting member 2 by matching the second rotating protrusion 34 with the second rotating groove 25. In this way, the linkage of the multi-dimensional feed shaft 3 and the connecting member 2 is realized. When the multi-dimensional feed shaft 3 moves downward, the connecting member 2 is synchronously driven to move downward. The driving protrusion 35 matches the driving groove 16 of the clamping member 1, so that the linkage of the multi-dimensional feed shaft 3 and the clamping member 1 can be realized. When the multi-dimensional feed shaft 3 moves upward, the clamping member 1 is synchronously driven to move upward. When the multi-dimensional feed shaft 3 rotates radially, the clamping member 1 is synchronously driven to rotate radially.

[0029] Fig. 9 FIG. 1 is a structural example diagram of a base of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application, as shown in FIG. Fig. 9 As shown, the base 4 of this embodiment includes an annular fastening base 41 and a fixing cylinder 42 integrally connected to the annular fastening base 41, a plurality of second slide grooves 43 are arranged on the circumference of the inner wall of the fixing cylinder 42, two through grooves 44 are symmetrically arranged on the fixing cylinder 42, a plurality of through first fixing holes 45 are arranged on the side wall of the fixing cylinder 42, and a plurality of first fastening holes 46 are arranged on the circumference of the annular fastening base 41. It should be noted that in this embodiment, the base 4 is an assembly and operation base, and in actual application, the base 4 is fixedly assembled at the fixture installation position of the corresponding detection equipment through the first fastening holes 46.

[0030] Fig.10This is a structural example diagram of a cooling cylinder of a clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application. Fig.11 FIG. 2 is another structural example diagram of the cooling cylinder of the clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application. Fig.10 and Fig.11 As shown, the cooling cylinder 5 of this embodiment includes a cooling cylinder body 51 which is a rotating body as a whole, a clamping cylinder assembly cavity 52 is coaxially arranged inside the cooling cylinder body 51, a spiral channel 53 is arranged on the cooling cylinder body 51 outside the clamping cylinder assembly cavity 52, two direct current channels 54 are symmetrically arranged on the cooling cylinder body 51, and the direct current channels 54 are connected with the spiral channel 53, and a plurality of first slide rail protrusions 55 are arranged on the outer circumference of the cooling cylinder body 51, and the first slide rail protrusions 55 match the second slide grooves 43 of the base 4, An annular connector assembly cavity 56 is coaxially arranged on the inner side of the bottom of the cooling cylinder body 51, and a plurality of second slide rail protrusions 57 are arranged on the circumference of the inner wall of the connector assembly cavity 56, and the second slide rail protrusions 57 match the first slide grooves 27 arranged on the circumference of the outer wall of the connector 2, and a plurality of non-through second fixing holes 58 are arranged on the side wall of the cooling cylinder body 51, and the second fixing holes 58 match the first fixing holes 45 on the side wall of the base 4, and a plurality of second fastening holes 59 are arranged on the top circumference of the cooling cylinder body 51. It should be noted that, in this embodiment, the inner diameter of the clamping cylinder assembly cavity 52 of the cooling cylinder 5 is larger than the outer diameter of the clamping cylinder 12 of the clamping member 1, that is, there is a gap between the cooling cylinder 5 and the clamping member 1, which facilitates the rotation of the clamping member 1 inside the cooling cylinder 5.

[0031] In this embodiment, the first slide rail protrusions 55 of the cooling cylinder 5 are assembled in a one-to-one correspondence in the second slide grooves 43 of the base 4, and the cooling cylinder 5 is radially limited so that the cooling cylinder 5 does not rotate, thereby ensuring the structural stability of the device. The second fixing hole 58 on the side wall of the cooling cylinder 5 matches the first fixing hole 45 on the side wall of the base 4, and the axial fixation and limiting of the cooling cylinder 5 in the base 4 are achieved by setting fasteners.

[0032] In actual application, two symmetrically arranged direct current channels 54 on the outside of the cooling cylinder 5 are assembled in the two through grooves 44 of the base 4. As an optional example, the two direct current channels 54 serve as a cooling source inlet and a cooling source outlet, respectively. For example, a fluid medium can be used as the cooling source of the cooling cylinder 5 of this embodiment. The fluid medium used in this embodiment can be a liquid medium or a gas medium. By allowing the fluid medium with low temperature to enter the cooling cylinder 5 from the direct current channel 54 on one side, flowing through the spiral channel 53 of the cooling cylinder 5, and flowing out from the direct current channel 54 on the other side, the cooling cylinder 5 reaches a set low temperature, thereby achieving low-temperature cooling of the clamping member 1 and the clamped workpiece to be measured.

[0033] In this embodiment, the annular connector assembly cavity 56 at the bottom of the cooling cylinder 5 is used for assembly with the upper part of the connector 2. The second slide rail protrusion 57 on the inner wall of the connector assembly cavity 56 matches the first slide groove 27 on the outer wall of the connector 2, so as to realize radial limitation and fixation of the connector 2 on the inner side of the cooling cylinder 5, so that the connector 2 can only move axially but not rotate radially in the cooling cylinder 5. In actual application, when the multi-dimensional feed shaft 3 moves upward or downward, the connector 2 is synchronously driven to move upward or downward in the cooling cylinder 5, and the clamping member 1 is synchronously driven to move upward or downward. When the multi-dimensional feed shaft 3 rotates radially, the clamping member 1 is synchronously driven to rotate radially.

[0034] Fig.12 FIG. 1 is a structural example diagram of the top seat of the clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to an embodiment of the present application, as shown in FIG. Fig.12 As shown, the top seat 6 of this embodiment is a rotating body as a whole, and the inner side of the top seat 6 is coaxially arranged from top to bottom with a workpiece hole 61 and a clamping head assembly cavity 62 connected, and the inner diameter of the clamping head assembly cavity 62 is larger than the outer diameter of the clamping head 13. A plurality of third fastening holes 63 are coaxially arranged on the top seat 6, and the third fastening holes 63 match the second fastening holes 59 on the top of the cooling cylinder 5. In actual application, the top seat 6 is fixed to the top of the cooling cylinder 5 by matching the third fastening holes 63 with the second fastening holes 59.

[0035] The application principle of the clamping device for multi-dimensional mechanical testing of the automobile steering rod of this embodiment is as follows: It should be noted that when the clamping device for multi-dimensional mechanical testing of the automobile steering tie rod of this embodiment is used for testing, the clamping device can be set at both ends of the steering tie rod 7, or it can be set at one end of the steering tie rod 7. In this example scenario, the clamping device for multi-dimensional mechanical testing of the automobile steering tie rod of this embodiment is used to clamp the upper end and the lower end of the steering tie rod 7. For ease of explanation, this scenario example describes the movement of the clamping device for multi-dimensional mechanical testing of the automobile steering tie rod set at the lower end of the steering tie rod 7.

[0036] When the clamping device for multi-dimensional mechanical testing of the steering rod of the automobile of the present embodiment is used to perform a tensile testing test on the steering rod 7, Figure 2 and Fig.13 The clamping device for multi-dimensional mechanical testing of the automobile steering tie rod of this embodiment and the steering tie rod 7 are assembled and clamped, and the base fixing and power connection of the clamping device for multi-dimensional mechanical testing of the automobile steering tie rod of this embodiment are completed. Fig.13 The multi-dimensional feed shaft 3 moves downward, synchronously driving the connecting member 2 and the clamping member 1 to move axially downward, thereby stretching the steering rod 7 clamped in the clamping member 1.

[0037] When the clamping device for multi-dimensional mechanical testing of the automobile steering rod of this embodiment is used to perform a pressure test on the crankshaft workpiece 7, Figure 2 and Fig.14 The clamping device for multi-dimensional mechanical testing of the automobile steering tie rod of this embodiment and the steering tie rod 7 are assembled and clamped, and the base fixing and power connection of the clamping device for multi-dimensional mechanical testing of the automobile steering tie rod of this embodiment are completed. Fig.14 Another clamping example diagram of the clamping device for multi-dimensional mechanical testing of automobile steering tie rods according to an embodiment of the present application is shown. The multi-dimensional feed shaft 3 moves upward, driving the clamping member 1 to move axially upward synchronously, and the steering tie rod 7 clamped in the clamping member 1 is contacted and pressure is transmitted through the support column 14.

[0038] When the steering tie rod 7 needs to be cryogenically cooled, the steering tie rod 7 is cryogenically cooled by circulating the fluid medium in the cooling cylinder 5. When the steering tie rod 7 needs to be torsionally tested, the torsion force is applied to the steering tie rod 7 in the clamp 1 by radially rotating the multi-dimensional feed shaft 3.

[0039] In practical applications, the multi-dimensional feed shaft 3 can be alternately moved up and down at a preset frequency according to the needs of the actual simulation scene, and a preset low-temperature cooling temperature can be provided at the same time. It should be noted that in this embodiment, the multi-dimensional feed shaft 3 can also simultaneously perform tension and torsion detection on the steering tie rod 7 clamped by the clamp 1, or simultaneously perform pressure and torsion detection on the steering tie rod 7 clamped by the clamp 1.

[0040] In practical applications, the clamping device for multi-dimensional mechanical testing of the automobile steering rod of this embodiment has the following beneficial technical effects: 1. It can realize the clamping of axial tension, axial pressure and radial torsion testing of the steering rod on the basis of one clamping, which significantly simplifies the testing process and completes the testing of multiple mechanical properties in the same clamping, without the need to frequently replace the fixture or re-clamp the crankshaft, thereby improving the testing efficiency and accuracy; 2. It can provide low-temperature scene simulation conditions for the steering rod in mechanical performance testing through low-temperature cooling and temperature control, so that the testing device can detect the mechanical properties under different low-temperature conditions, and further restore the real application conditions in multiple dimensions; 3. Easy assembly and disassembly, reducing the preparation time before testing and the cleaning time after testing, improving the overall work efficiency, and also reducing the equipment loss caused by frequent clamping and disassembly; 4. Stable clamping and high clamping accuracy can ensure the accurate position of the steering rod during the detection process, avoid detection errors caused by improper clamping, improve the reliability and repeatability of the test results, and ensure the accuracy of the test data.

[0041] The clamping device for multi-dimensional mechanical testing of automobile steering rods of the present application improves the efficiency and accuracy of multi-dimensional mechanical performance testing of steering rods through comprehensive structural design, and provides a more comprehensive performance evaluation by simulating real application conditions. It is of great significance to improve the reliability and performance of automobile steering rods, reduce production costs, and optimize product quality control.

[0042] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A clamping device for multi-dimensional mechanical testing of a steering rod of an automobile, characterized in that: The device includes: a clamping member, a connecting member, a multi-dimensional feed shaft, a base, a cooling cylinder and a top seat, wherein the top seat is fixedly arranged on the top of the cooling cylinder, the base is coaxially arranged on the outside of the cooling cylinder, the connecting member is radially fixedly coaxially assembled on the lower inner side of the cooling cylinder, the clamping member is coaxially assembled in the cavity inside the top seat, the cooling cylinder and the connecting member, and the upper part of the multi-dimensional feed shaft is rotatably coaxially assembled on the inner side of the connecting member below the clamping member. When the multi-dimensional feed shaft is moved axially, the clamping member and the connecting member can be synchronously moved axially, and when the multi-dimensional feed shaft is radially rotated, the clamping member can be synchronously rotated radially.

2. The clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to claim 1, characterized in that: The clamping member includes a support seat, a clamping cylinder, a clamping head and a support column which is integrally connected from bottom to top and arranged integrally on the upper part of the support seat and coaxially arranged on the inner side of the clamping cylinder. A first rotating groove is arranged on the upper part of the support seat, and multiple driving grooves are arranged on the lower circumference of the support seat.

3. The clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to claim 2, characterized in that: The outer diameter of the clamping head increases from bottom to top, and a plurality of through curved grooves are arranged on the circumference of the clamping head.

4. The clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to claim 3, characterized in that: The connecting piece includes, from bottom to top, an integrally connected connecting piece bottom, a connecting piece side and a connecting piece top. An axial hole and a second rotating groove are coaxially arranged on the inner side of the connecting piece bottom from the inside to the outside. The connecting piece top is an annular protrusion extending toward the inner side of the connecting piece side. An annular first rotating protrusion is integrally arranged at the bottom of the connecting piece top. The first rotating protrusion matches the first rotating groove of the clamping piece. A plurality of first sliding grooves are arranged circumferentially on the outer side wall of the connecting piece.

5. The clamping device for multi-dimensional mechanical testing of automobile steering rod according to claim 4, characterized in that: The multidimensional feed shaft includes a feed shaft body, a first annular portion arranged on the upper part of the feed shaft body, and a second annular portion arranged on the top of the feed shaft body. A second annular rotating protrusion is arranged at the bottom of the first annular portion, and the second rotating protrusion matches the second rotating groove of the connecting member. A plurality of driving protrusions are arranged on the top circumference of the second annular portion, and the driving protrusion matches the driving groove of the clamping member.

6. The clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to claim 5, characterized in that: The base includes an annular fastening base and a fixing cylinder integrally connected to the annular fastening base, a plurality of second sliding grooves are arranged circumferentially on the inner wall of the fixing cylinder, two through grooves are symmetrically arranged on the fixing cylinder, a plurality of through first fixing holes are arranged on the side wall of the fixing cylinder, and a plurality of first fastening holes are arranged circumferentially on the annular fastening base.

7. The clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to claim 6, characterized in that: The cooling cylinder includes a cooling cylinder body which is a rotating body as a whole, a clamping cylinder assembly cavity is coaxially arranged inside the cooling body, a spiral channel is arranged on the cooling cylinder body outside the clamping cylinder assembly cavity, two DC channels are symmetrically arranged on the cooling cylinder body, the DC channels are connected with the spiral channels, a plurality of first slide rail protrusions are arranged on the outer circumference of the cooling cylinder body, the first slide rail protrusions match the second slide groove of the base, an annular connecting piece assembly cavity is coaxially arranged on the inner side of the bottom of the cooling cylinder body, a plurality of second slide rail protrusions are arranged on the circumference of the inner wall of the connecting piece assembly cavity, the second slide rail protrusions match the first slide groove arranged on the circumference of the outer wall of the connecting piece, a plurality of non-through second fixing holes are arranged on the side wall of the cooling cylinder body, the second fixing holes match the first fixing holes on the side wall of the base, and a plurality of second fastening holes are arranged on the top circumference of the cooling cylinder body.

8. The clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to claim 7, characterized in that: The inner diameter of the clamping tube assembly cavity of the cooling cylinder is larger than the outer diameter of the clamping tube of the clamping member.

9. The clamping device for multi-dimensional mechanical testing of a vehicle steering rod according to claim 8, characterized in that: Two symmetrically arranged direct current channels on the outer side of the cooling cylinder are assembled in two through grooves of the base.

10. The clamping device for multi-dimensional mechanical testing of a steering rod of an automobile according to claim 9, characterized in that: The top seat is a rotating body as a whole, and the inner side of the top seat is coaxially arranged with a connected workpiece hole and a clamping head assembly cavity from top to bottom. The inner diameter of the clamping head assembly cavity is larger than the outer diameter of the clamping head. A plurality of third fastening holes are coaxially arranged on the top seat, and the third fastening holes match the second fastening holes on the top of the cooling cylinder.

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