CN210604150U - Suspension multi-shaft static rigidity testing device - Google Patents
Suspension multi-shaft static rigidity testing device Download PDFInfo
- Publication number
- CN210604150U CN210604150U CN201921238635.XU CN201921238635U CN210604150U CN 210604150 U CN210604150 U CN 210604150U CN 201921238635 U CN201921238635 U CN 201921238635U CN 210604150 U CN210604150 U CN 210604150U
- Authority
- CN
- China
- Prior art keywords
- plate
- loading
- suspension
- static stiffness
- testing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application discloses quiet rigidity testing arrangement of suspension multiaxis, the quiet rigidity testing arrangement of suspension multiaxis includes: the device comprises a fixed support, a first positioning device and a second positioning device, wherein the fixed support is provided with a first mounting position used for being connected with an inner core of a suspension to be tested and is fixedly mounted on a test bench; the loading bracket is provided with a second mounting position used for being connected with the exoskeleton of the suspension to be tested; and the loading mechanism is connected with the loading support and is used for outputting load to the loading support. The utility model provides a quiet rigidity testing arrangement of suspension multiaxis can realize the preloading to the suspension owner, and then does benefit to and carries out quiet rigidity test through the side direction of unipolar elastomer test bench to the suspension, from this, can realize the quiet rigidity test of the multiaxis of suspension, improves the utilization ratio of unipolar elastomer test bench, and promotes the processing procedure management and control ability of product.
Description
Technical Field
The application relates to the technical field of test tool manufacturing, in particular to a suspension multi-shaft static stiffness testing device.
Background
The multi-axis static stiffness of the rubber suspension refers to the ratio of the lateral (X or Y direction) force variation to the displacement variation under static load in the main direction (generally the Z direction of the coordinate system of the whole vehicle). In the related art, the multi-axis static stiffness test of the suspension comprises two test modes: 1) a multi-axis elastomer test bed (such as MTS 833) and a special tool are used, but the experimental equipment is expensive, poor in economy and required to be entrusted with testing; 2) most damping enterprises have a single-axis elastomer test bed (such as the MTS 831), do not have a single-axis elastomer test bed or are in a resource shortage, and can only perform single-axis test on static stiffness in the X or Y direction or entrust other test units or manufacturers to perform test in order to better control the quality of the manufacturing process. However, both of these test methods have significant disadvantages: the single-axis test cannot reflect the actual static stiffness of the product and has certain misleading property; the entrusted test period is long, the hysteresis is provided, the process quality is in a runaway state, and the improvement space exists.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present application is to provide a suspension multi-axis static stiffness testing apparatus, which can achieve the main direction preloading of the suspension, and is convenient for testing the lateral static stiffness through a single-axis elastic test bed.
According to this application embodiment's suspension multiaxis quiet rigidity testing arrangement, include: the device comprises a fixed support, a first positioning device and a second positioning device, wherein the fixed support is provided with a first mounting position used for being connected with an inner core of a suspension to be tested and is fixedly mounted on a test bench; the loading bracket is provided with a second mounting position used for being connected with the exoskeleton of the suspension to be tested; and the loading mechanism is connected with the loading support and is used for outputting load to the loading support.
According to the static rigidity testing arrangement of suspension multiaxis according to this application embodiment, can realize the preloading to the suspension owner, and then do benefit to and carry out the static rigidity test through the unipolar elastomer test bench to the side direction of suspension, from this, can realize the static rigidity test of suspension multiaxis, improve the utilization ratio of unipolar elastomer test bench, and promote the processing procedure management and control ability of product.
According to this application one embodiment's suspension multiaxis static stiffness test device, the loading support includes: the loading mechanism comprises a first plate and a second plate, wherein the first plate and the second plate are detachably connected, the end faces, facing each other, of the first plate and the second plate form the second installation position, the first plate and the second plate are used for clamping at least part of the outer framework, and at least one of the first plate and the second plate is connected with the loading mechanism.
According to the suspension multi-shaft static rigidity testing device provided by one embodiment of the application, the end face, facing the other, of at least one of the first plate and the second plate is provided with a mounting groove, and the mounting groove is used for accommodating at least part of the outer framework.
According to the suspension multi-shaft static rigidity testing device, the mounting groove is an annular groove, and the annular groove is used for mounting an annular flange of the outer framework, and the annular flange extends outwards in the radial direction.
According to the suspension multi-axis static stiffness testing device, at least part of the first plate protrudes out of the second plate in the radial direction, and the loading mechanism penetrates through at least part of the first plate to be connected with the first plate.
According to this application one embodiment's suspension multiaxis quiet rigidity testing arrangement, load mechanism includes: loading piece and installed part, the installed part be used for with test bench fixed connection, the loading piece with the loading support links to each other, just the loading piece with the installed part is followed the axial movably cooperation of installed part.
According to this application one embodiment's suspension multiaxis static stiffness test device, the loading piece includes: the pressing section is larger than the threaded connection section in diameter, the threaded connection section penetrates through the loading support and is in threaded fit with the mounting piece, and the pressing section presses against the loading support towards the end face of the threaded connection section.
According to this application one embodiment's suspension multiaxis static stiffness test device, still include: the anti-drop nut is sleeved on the threaded connection section and in threaded fit with the threaded connection section, and the anti-drop nut is suitable for abutting against one side, deviating from the abutting section, of the loading support.
According to the suspension multi-axis static stiffness testing device, the distance between the fixing support and the loading mechanism is the same as the distance between the mounting piece and the loading mechanism.
According to the static rigidity testing arrangement of suspension multiaxis of an embodiment of this application, first installation position includes the connecting hole, the connecting hole be used for with the inner core shaft hole cooperation.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of a suspension multi-axis static stiffness testing device according to an embodiment of the application;
FIG. 2 is a cross-sectional view of a suspended multi-axis static stiffness testing device according to an embodiment of the application.
Reference numerals:
the suspension multi-axis static stiffness test apparatus 100,
the fixing bracket (1) is fixed on the bracket,
the loading ledges 2, the first plate 21, the second plate 22,
the loading mechanism 3, the loading piece 31, the pressing section 311, the threaded connection section 312, the mounting piece 32, the anti-falling nut 33,
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle, i.e., the X direction; the left and right directions are the transverse direction of the vehicle, namely the Y direction; the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.
With reference to fig. 1-2, a suspension multi-axis static stiffness testing device 100 according to an embodiment of the present application is described, where the suspension multi-axis static stiffness testing device 100 is capable of pre-loading a main direction of a suspension 101, and determining an actual loading force through a loading displacement, so as to facilitate a static stiffness test of a lateral direction of the suspension 101 through a single-axis elastomer test bed, and thus, a multi-axis static stiffness test of the suspension 101 can be achieved.
As shown in fig. 1 and 2, a suspended multi-axis static stiffness testing device 100 according to an embodiment of the present application includes: the device comprises a fixed support 1, a loading support 2 and a loading mechanism 3.
It should be noted that, as shown in fig. 1, the suspension 101 includes an outer frame 102, a rubber body 103 and an inner core 104, wherein the rubber body 103 is connected between the outer frame 102 and the inner core 104, and the structural strength of the outer frame 102 and the structural strength of the inner core 104 are both greater than the structural strength of the rubber body 103, so that when the outer frame 102 is pressed toward the inner core 104, the outer frame 102 presses the rubber body 103, so that the rubber body 103 elastically deforms between the outer frame 102 and the inner core 104 and bears the load. Of course, when the rubber body 103 receives a radial force, the rubber body 103 is elastically deformed in the radial direction. Before the suspension 101 is applied to an actual working environment, the multi-axis (principal direction, lateral direction) static stiffness of the suspension 101 needs to be tested to meet actual performance requirements.
As shown in fig. 2, the fixing bracket 1 has a first mounting position, the first mounting position is used for connecting with the inner core 104 of the suspension 101 to be tested, the fixing bracket 1 can be in a hard plate shape, the first mounting position includes a connecting hole arranged on the fixing bracket 1, the connecting hole penetrates through the fixing bracket 1, the connecting hole is used for matching with the inner core 104 of the suspension 101 to be tested, as shown in fig. 2, one end of the inner core 104 departing from the rubber body 103 is provided with a threaded section, the inner core 104 passes through the connecting hole, and the inner core 104 is fixed on the fixing bracket 1 through a nut 105 matched with the threaded section, so that the suspension 101 is relatively fixed with the fixing bracket 1 when not stressed. The fixing bracket 1 is fixedly mounted on a test bench, so that the inner core 104 is fixed relative to the test bench during testing.
The loading support 2 is provided with a second mounting position, the second mounting position is used for being connected with the outer framework 102 of the suspension 101 to be tested, and after the suspension 101 and the testing device are fixedly mounted, the loading support 2 is fixedly connected with the outer framework 102, namely, the loading support 2 can synchronously move with the outer framework 102, therefore, when the loading support 2 is subjected to axial force, the loading support 2 can drive the outer framework 102 to move relative to the inner core 104, and further, in the moving process of the outer framework 102, the rubber body 103 is deformed under the stress.
The loading mechanism 3 is connected with the loading support 2, the loading mechanism 3 can be connected with the loading support 2 through a threaded fastener, the loading mechanism 3 and the loading support 2 can also be integrally formed, and the loading mechanism 3 is used for outputting loads to the loading support 2, so that the loading mechanism 3 can drive the loading support 2 to move, and the suspension 101 is deformed under stress.
As shown in fig. 2, the loading mechanism 3 includes a mounting member 32 and a loading member 31, the loading member 31 is connected to the loading bracket 2, the mounting member 32 is fixedly connected to the test bed, and the loading member 31 and the mounting member 32 are movably connected in the axial direction of the mounting member 32.
Therefore, during assembly, the suspension 101 can be installed on the testing device, and then the fixing support 1 and the installation part 32 of the testing device are fixedly connected with the test bench, so that the testing device and the suspension 101 are both fixed relative to the test bench. And the axis of the loading element 31 is parallel to the axis of the suspension 101, so that the loading element 31 can drive the exoskeleton 102 to move in the same direction.
In the specific loading process, the loading part 31 is driven to move relative to the mounting part 32 and the test bench, the loading part 31 drives the loading support 2 and the outer framework 102 to move, the inner core 104 of the suspension 101 is relatively fixed with the test bench, and therefore the outer framework 102 applies force to the rubber body 103 along with the movement process of the loading part 31, so that the main preloading of the suspension 101 is realized, the static rigidity test is carried out on the lateral direction of the suspension 101 through the single-shaft elastomer test bench, and the multi-shaft static rigidity test of the suspension 101 is completed. And the manufacturing process quality can be effectively controlled without requiring a substitute test.
According to the suspension multiaxis static rigidity testing device 100 of the embodiment of the application, the preloading of the suspension 101 in the main direction can be realized, and then the static rigidity testing of the side direction of the suspension 101 through the uniaxial elastomer test bed is facilitated, so that the multiaxis static rigidity testing of the suspension 101 can be realized, the utilization rate of the uniaxial elastomer test bed is improved, and the manufacture procedure management and control capability of a product is improved.
In some embodiments, as shown in fig. 2, the loading stand 2 includes a first plate 21 and a second plate 22.
The end faces of the first plate 21 and the second plate 22 facing each other form a second mounting position, the first plate 21 and the second plate 22 are used for clamping at least part of the outer framework 102, as shown in fig. 2, the outer periphery of the outer framework 102 is provided with a part extending outwards in the radial direction, so that when the suspension 101 is fixedly connected with the loading bracket 2, the part extending outwards in the radial direction of the outer framework 102 is mounted between the first plate 21 and the second plate 22 and then fixed through bolts, so that the suspension 101 is stably mounted, and the outer framework 102 can be guaranteed to move accurately along with the loading bracket 2.
At least one of the first plate 21 and the second plate 22 is connected to the loading mechanism 3, that is, the first plate 21 may be connected to the loading mechanism 3, the second plate 22 may be connected to the loading mechanism 3, or both the first plate 21 and the second plate 22 may be connected to the loading mechanism 3. As shown in fig. 2, the first plate 21 is connected to the loading mechanism 3, and the first plate 21 and the loading member 31 of the loading mechanism 3 are axially fixed, so that when the loading member 31 moves relative to the test bed, the first plate 21 effectively drives the second plate 22 and the exoskeleton 102 to move together along the axial direction of the loading member 31, thereby implementing the main preloading of the suspension 101.
As shown in fig. 2, an end surface of at least one of the first plate 21 and the second plate 22 facing the other is provided with a mounting groove for receiving at least a portion of the outer frame 102. If the end surface of the first plate 21 facing the second plate 22 is provided with a mounting groove, the part of the outer framework 102 protruding along the radial direction is mounted on the first plate 21 and limited along the radial direction by the first plate 21; or the end surface of the second plate 22 facing the first plate 21 is provided with a mounting groove, and the part of the outer framework 102 protruding along the radial direction is mounted on the second plate 22 and limited along the radial direction by the second plate 22; or the end surfaces of the first plate 21 and the second plate 22 facing each other are both provided with mounting grooves, the mounting groove of the first plate 21 and the mounting groove of the second plate 22 limit the second mounting position together, one side of the radial protruding part of the outer framework 102 is located in the mounting groove of the first plate 21, the other side of the radial protruding part of the outer framework 102 is located in the mounting groove of the second plate 22, the first plate 21 and the second plate 22 limit the outer framework 102 in the radial direction at the same time, the limiting effect is better, and the thickness of the radial protruding part of the outer framework 102 is larger than the depth of the mounting groove, so that after the first plate 21 and the second plate 22 are connected through bolts, the outer framework 102 can be effectively supported and pressed by the first. Thereby, the loading bracket 2 and the exoskeleton 102 can be fixedly installed.
In some embodiments, the mounting groove is an annular groove, that is, the mounting groove extends along the circumferential direction of the first plate 21 or the second plate 22, the annular groove is used for mounting an annular flange of the outer frame 102, and the annular flange extends radially outward to form an annular shape, so that each position of the outer frame 102 along the circumferential direction is stably clamped between the first plate 21 and the second plate 22, the mounting stability of the loading support 2 and the suspension 101 is greatly enhanced, the transmission accuracy between the loading support 2 and the suspension 101 is further improved, and the suspension 101 is guaranteed to be effectively loaded.
As shown in fig. 2, at least a portion of the first plate 21 protrudes out of the second plate 22 in the radial direction, the loading mechanism 3 penetrates through at least a portion of the first plate 21 to connect with the first plate 21, as shown in fig. 2, a lower end of the first plate 21 protrudes out of the second plate 22, that is, a radial dimension of the first plate 21 is larger than a radial dimension of the second plate 22, and the loading element 31 penetrates through a portion of the lower end of the first plate 21 protruding out of the second plate 22 to be fixedly connected with the first plate 21, so that during a process that the loading element 31 moves relative to the test bed, the first plate 21 and the second plate 22 can be driven to apply pressure to the outer frame 102, thereby realizing the main preload of the suspension 101.
In some embodiments, as shown in fig. 2, the loading member 31 includes a pressing section 311 and a threaded connection section 312.
As shown in fig. 2, the diameter of the pressing section 311 is greater than the diameter of the threaded connection section 312, the threaded connection section 312 penetrates through the loading bracket 2, the mounting member 32 has a threaded hole, the threaded connection section 312 is in threaded fit with the mounting member 32, an end surface of the pressing section 311 facing the threaded connection section 312 presses against the loading bracket 2, as shown in fig. 2, a first end of the threaded connection section 312 is connected with the pressing section 311, and a second end of the threaded connection section 312 is in threaded fit with the mounting member 32.
Therefore, when the loading piece 31 is driven to rotate towards the direction close to the test bench relative to the mounting piece 32, the mounting piece 32 and the test bench are relatively fixed, the threaded connection section 312 rotates in the threaded hole of the mounting piece 32, the threaded connection section 312 and the abutting section 311 move towards the direction close to the test bench along the axial direction of the threaded connection section 312 and the abutting section 311, and in the moving process, the abutting section 311 drives the first plate 21, the second plate 22 and the outer framework 102 to move towards the direction close to the test bench, so that loading on the suspension 101 is achieved.
As shown in fig. 2, the suspension multi-axis static stiffness testing apparatus 100 further includes: and a retaining nut 33.
Threaded connection section 312 is located to anticreep nut 33 cover, and anticreep nut 33 and the threaded connection section 312 screw-thread fit, anticreep nut 33 is located between first board 21 and the installed part 32, like this, when drive loading piece 31 rotates for installed part 32, adjustable anticreep nut 33, so that anticreep nut 33 supports and presses in the one side that loading support 2 deviates from to support section 311, like this, after removing the drive power to loading piece 31, anticreep nut 33 can prevent loading piece 31 reverse motion, guarantee loaded stability.
The distance between the fixing support 1 and the loading mechanism 3 is the same as the distance between the mounting part 32 and the loading mechanism 3, and therefore the positions of the loading part 31 before and after loading correspond to the positions of the outer framework 102 before and after loading one by one, so that the displacement of the outer framework 102 can be obtained more intuitively, the preloading force can be calculated quickly, and the testing efficiency of the multi-axis static rigidity is improved.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A suspension multiaxis static rigidity testing arrangement which characterized in that includes:
the device comprises a fixed support, a first positioning device and a second positioning device, wherein the fixed support is provided with a first mounting position used for being connected with an inner core of a suspension to be tested and is fixedly mounted on a test bench;
the loading bracket is provided with a second mounting position used for being connected with the exoskeleton of the suspension to be tested;
and the loading mechanism is connected with the loading support and is used for outputting load to the loading support.
2. The suspended multi-axis static stiffness test device of claim 1, wherein the loading mount comprises: the loading mechanism comprises a first plate and a second plate, wherein the first plate and the second plate are detachably connected, the end faces, facing each other, of the first plate and the second plate form the second installation position, the first plate and the second plate are used for clamping at least part of the outer framework, and at least one of the first plate and the second plate is connected with the loading mechanism.
3. The suspension multi-axis static stiffness testing device of claim 2, wherein an end surface of at least one of the first plate and the second plate facing the other is provided with a mounting groove for receiving at least part of the exoskeleton.
4. The suspension multi-axis static stiffness testing device of claim 3, wherein the mounting groove is an annular groove for mounting a radially outwardly extending annular flange of the exoskeleton.
5. The suspension multi-axis static stiffness testing device of claim 2, wherein at least a portion of the first plate protrudes radially from the second plate, and the loading mechanism extends through at least a portion of the first plate to connect to the first plate.
6. The suspension multi-axis static stiffness testing device of any one of claims 1-5, wherein the loading mechanism comprises: loading piece and installed part, the installed part be used for with test bench fixed connection, the loading piece with the loading support links to each other, just the loading piece with the installed part is followed the axial movably cooperation of installed part.
7. The suspension multi-axis static stiffness testing device of claim 6, wherein the loading member comprises: the pressing section is larger than the threaded connection section in diameter, the threaded connection section penetrates through the loading support and is in threaded fit with the mounting piece, and the pressing section presses against the loading support towards the end face of the threaded connection section.
8. The suspension multi-axis static stiffness testing device of claim 7, further comprising: the anti-drop nut is sleeved on the threaded connection section and in threaded fit with the threaded connection section, and the anti-drop nut is suitable for abutting against one side, deviating from the abutting section, of the loading support.
9. The suspension multi-axis static stiffness testing device of claim 6, wherein a distance between the fixed bracket and the loading mechanism is the same as a distance between the mount and the loading mechanism.
10. The suspended multi-axis static stiffness test device of any one of claims 1 to 5, wherein the first mounting location comprises a connection hole for mating with the inner core shaft hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921238635.XU CN210604150U (en) | 2019-07-30 | 2019-07-30 | Suspension multi-shaft static rigidity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921238635.XU CN210604150U (en) | 2019-07-30 | 2019-07-30 | Suspension multi-shaft static rigidity testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210604150U true CN210604150U (en) | 2020-05-22 |
Family
ID=70698530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921238635.XU Active CN210604150U (en) | 2019-07-30 | 2019-07-30 | Suspension multi-shaft static rigidity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210604150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116429323A (en) * | 2023-06-07 | 2023-07-14 | 江铃汽车股份有限公司 | Method for detecting sealing performance of automobile hydraulic suspension |
-
2019
- 2019-07-30 CN CN201921238635.XU patent/CN210604150U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116429323A (en) * | 2023-06-07 | 2023-07-14 | 江铃汽车股份有限公司 | Method for detecting sealing performance of automobile hydraulic suspension |
| CN116429323B (en) * | 2023-06-07 | 2023-09-01 | 江铃汽车股份有限公司 | Method for detecting sealing performance of automobile hydraulic suspension |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110243602B (en) | Low-temperature wear test system for joint bearing and assembling method thereof | |
| CN103335801B (en) | High-precision vibration simulation system based on multi-axis multi-degree of freedom | |
| EP2613134B1 (en) | System and method for aligning a test article with a load | |
| KR20090127169A (en) | General-purpose test device, linear actuator, and twist test device | |
| CN210604150U (en) | Suspension multi-shaft static rigidity testing device | |
| CN205785793U (en) | Bush test stand | |
| JP2009075064A (en) | Universal testing equipment and direct-acting actuator | |
| CN109357867B (en) | Radial loading device for fatigue life test of RV reducer | |
| CN104990694A (en) | Automobile steering track rod assembly and ball head pin test device | |
| CN105372127A (en) | Tension-compression and torsion composite loading testing machine | |
| CN110967155B (en) | Rigidity testing device for flexible disk of automatic transmission | |
| CN112985997B (en) | Cone shell sample piece composite load fatigue test device | |
| CN112664577B (en) | Stable platform bearing fixing structure and assembling and adjusting method | |
| CN205280337U (en) | Can realize accurate loaded switching of radial fitting surface extrusion force structure of twining | |
| CN210235353U (en) | Rotor shaft locking device for helicopter rotor shaft static test | |
| JP2016169943A (en) | Shaft center adjusting device and material test machine | |
| CN216731468U (en) | A anchor clamps frock for examining special-shaped product | |
| CN105241358B (en) | A kind of laboratory holder with angle regulating function and height adjusting function | |
| JP5375771B2 (en) | Axis adjuster for material testing machine | |
| CN218512227U (en) | Bias torsion fatigue test device for rubber bushing | |
| CN204575307U (en) | A kind of lining stiffness test frock | |
| CN212978109U (en) | Pressing mechanism and pressure maintaining device | |
| CN210414390U (en) | Tolerance automatic adjusting device | |
| CN204788918U (en) | Car steering linkage assembly and bulb round pin test device | |
| CN110631784A (en) | Device for measuring axial torsional rigidity of bushing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |