CN106525413A - Vehicle rubber bushing fatigue tester - Google Patents
Vehicle rubber bushing fatigue tester Download PDFInfo
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- CN106525413A CN106525413A CN201611253506.9A CN201611253506A CN106525413A CN 106525413 A CN106525413 A CN 106525413A CN 201611253506 A CN201611253506 A CN 201611253506A CN 106525413 A CN106525413 A CN 106525413A
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- guide rod
- drive link
- rod
- rubber bushing
- axial
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
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- General Physics & Mathematics (AREA)
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- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a vehicle rubber bushing fatigue tester which comprises a clamp, an axial loading device and a radial loading device. The axial loading device comprises an axial guide rod and a first transmission rod. The radial loading device comprises a radial guide rod, a second transmission rod, a third transmission rod and a fourth transmission rod. One end of the radial guide rod is fixed to a bracket, and the other end is connected to the second transmission rod, the third transmission rod and the fourth transmission rod. The first transmission rod is perpendicular to the axial guide rod and the radial guide rod. The second transmission rod, the third transmission rod and the fourth transmission rod are perpendicular to each other, wherein the second transmission rod is parallel to the axial guide rod and is perpendicular to the radial guide rod, the third transmission rod is perpendicular to the axial guide rod and the radial guide rod, and the fourth transmission rod is perpendicular to the radial guide rod. The vehicle rubber bushing fatigue tester has the advantages of a simple structure and high versatility, only the setting of four external driving devices is needed, the load output setting of each external driving device is simple and clear, and the actual stress condition of a rubber bushing can be simulated well.
Description
Technical field
The present invention relates to fatigue of automobile parts test field, more particularly to a kind of automobile rubber bush fatigue test dress
Put.
Background technology
In automotive suspension, rubber bushing is important damping type component, and its rigidity property and durable reliability are directly closed
It is tied to automobile chassis performance and driving comfort.Rubber bushing generally comprises inner core, outer shroud and the rubber layer between them, rubber
The fatigue durability of glue bushing is the important indicator of automotive safety characteristic.
In reality, the loads typical mode that automobile rubber bush is subject to is (such as the bushing of various connecting rods)：Bushing inner core edge
Radially by the power load of a change；Along three orthogonal directions, constantly occur mutually to rotate between bushing inner core and outer shroud.Mesh
Before, two methods are commonly used in laboratory and processes this problem：First method only uses radial load to simplify experiment, i.e., or
Along with the relative rotation between rubber bushing inner core and outer shroud along certain direction, such as 201410439846.5 (Shen of Application No.
Please publication No. be 104180982 A of CN) a kind of bushing triple channel brake fatigue test rack of Chinese invention patent, it include rotation
Driving means, axial drive means, radial drive, rotary shaft and mounting blocks, rotating driving device are connected with rotary shaft, institute
The diameter of bore that the diameter of rotary shaft is stated with bushing is adapted, rotary shaft from left to right through bushing endoporus and with bushing in
Side wall is adjacent to, and the through hole being adapted with bushing is provided with mounting blocks, is enclosed within bushing and the lateral wall with bushing outside mounting blocks
It is adjacent to, before and after mounting blocks, both sides are provided with load bar, load bar and rotary shaft arranged parallel, one end and axial direction of load bar
Driving means connect, and the other end of load bar is connected with mounting blocks by connecting rod, and connecting rod is vertically arranged with rotary shaft, wherein
One connecting rod is connected with radial drive.The device is only capable of realizing the loading to radial load, it is impossible to preferable simulation rubber
The real load operating mode of bushing, thus accurate simulated experiment result can not be obtained.
Second method uses more complicated laboratory holder and multiple hydraulic cylinders (generally six or more), will lining
Set heart is fixed and outer shroud is connected on fixture, and oil cylinder is loaded from multiple directions to fixture.The experimental oil that this kind of method is used
Cylinder is more, and for more complicated load, the load output of each oil cylinder arranges more complicated, and the loading of all directions may
Influence each other, cause certain error.
The content of the invention
First technical problem to be solved by this invention is provided one kind and can effectively simulate rubber for prior art
The automobile rubber bush of the radial load load that bushing inner core is subject to and three relative rotation load between inner core and outer shroud is tired
Labor experimental rig.
Second technical problem to be solved by this invention is to provide a kind of in effectively simulation rubber for prior art
On the basis of bushing real load pattern, interactive automobile rubber bush fatigue test between various load can be prevented effectively from
Device.
The present invention solve the technical scheme that adopted of above-mentioned technical problem for：A kind of automobile rubber bush fatigue test dress
Put, it is characterised in that include for clamping fixture, axial loading device and the radial loading device of rubber bushing to be measured, institute
State fixture include for clamp rubber bushing to be measured outer shroud bearing and compress the inner core two ends of rubber bushing to be measured vertically
Support, the axial loading device include along the axially arranged axial guide rod of rubber bushing to be measured and with external driver device connect
The first drive link for connecing, one end of the axial guide rod and above-mentioned inner core axial restraint, the other end pass through ball pivot and the first transmission
Bar connects, and the radial loading device is included the radial direction guide rod being radially arranged along rubber bushing to be measured and filled with external drive respectively
The second drive link, the 3rd transmission rod and the 4th drive link of connection are put, one end and the above-mentioned support of the radial direction guide rod are fixed
The other end is connected with the second drive link, the 3rd transmission rod and the 4th drive link respectively by a ball pivot, above-mentioned first drive link
Vertical with above-mentioned axial guide rod and radial direction guide rod respectively, above-mentioned second drive link, the 3rd transmission rod and the 4th drive link are mutual
Vertically, wherein the second drive link is parallel with axial guide rod and vertical with radial direction guide rod, the 3rd transmission rod it is vertical with axial direction guide rod and
Parallel with radial direction guide rod, the 4th drive link is vertical with radial direction guide rod.
Preferably, first drive link, the second drive link, the 3rd transmission rod and the 4th drive link include connection
Bar and at least two corner Force transmission partses, above-mentioned two corner Force transmission partses are separately positioned on the two ends of connecting rod, and wherein one
Individual corner Force transmission partses are connected with external driver device, and another corner Force transmission parts is connected with corresponding ball pivot, each described turn
Angle Force transmission partses include arranging along connecting rod length direction and orthogonal first plate body and the second plate body, and first plate
The free end of body is connected with external driver device, and the free end of the second plate body is connected with corresponding ball pivot.Corner Force transmission partses
In rigidity vertically it is very big, and along the both direction being respectively perpendicular with the first plate body and the second plate body place plane rigidity very
It is little, then make the first plate body and the second plate body be susceptible to flexural deformation.So the load of external driver device loading is from corner
Force transmission partses axis direction passes through, and along the direction vertical with load, the rigidity of corner Force transmission partses is less, thus can have certain
Displacement.From geometrical relationship, along when having a thin tail sheep with load vertical direction, corner is passed for one end of corner Force transmission partses
The deflection of power component (promotion of external driver device or draw direction) vertically be the second order of the displacement in a small amount, be outside
The axial length of driving means can be considered as constant.Such as：When less drive displacement is applied to the 3rd transmission rod, the second drive link
Displacement vertically can be considered as it is unaffected, in the same manner, when other drive links occur less drive displacement when, each transmission rod
Or drive link displacement vertically also can be considered constant, so that the first drive link, the second drive link, the 3rd transmission rod and
Four drive links put on the load of rubber bushing to be measured and are independent of each other, it is ensured that the accuracy of result of the test.
To consolidate corner Force transmission partses internal structure, and more firmly it is connected with connecting rod and ball pivot, preferably
Ground, the corner Force transmission partses also include that the first contiguous block and second for connecting above-mentioned first plate body and the second plate body connect
Block, second contiguous block are two pieces and are connected to the free end of the first plate body and the second plate body.
To enable above-mentioned each transmission rod or drive link preferably by load transmission to rubber bushing to be measured, so as to preferably
Radial load load and three relative rotation load between inner core and outer shroud that effectively simulation rubber bushing inner core is subject to are formed,
The support is C-shaped, and including L-type frame and the briquetting being connected on the vertical beam of the L-type frame, a fastening bolt sequentially passes through L-type frame
Crossbeam, the inner core centre bore of rubber bushing to be measured and briquetting, and lock with the end of axial guide rod, so as to by rubber to be measured
The inner core of bushing is pressed between the crossbeam of briquetting and L-type frame, and the vertical beam of the end of radial direction guide rod and L-type frame is fixed.
External driver device in the present invention can have various implementations, preferably, the external driver device is liquid
Cylinder pressure.
Compared with prior art, it is an advantage of the current invention that：By clamp rubber bushing to be measured in the present invention, wherein
Bearing clamps the outer shroud of rubber bushing to be measured, and support is by compressing the inner core two ends of rubber bushing to be measured vertically, by the
Three transmission rods to inner core apply radial load load, by the first drive link, the second drive link and the 4th drive link to inner core with
Apply the load of three relative rotations between outer shroud, so as to preferably realize the simulation to rubber bushing actual loading operating mode, make
Obtain result of the test more true, accurate.
It can be seen that, the automobile rubber bush fatigue experimental device simple structure in the present invention, highly versatile, it is only necessary to arrange four
External driver device, and the load output of each external driver device arranges simple and clear, can preferable simulation rubber bushing reality
Border force status.
Description of the drawings
Fig. 1 is the structural representation of automobile rubber bush fatigue experimental device in the embodiment of the present invention；
Fig. 2 is the enlarged drawing of I part in Fig. 1；
Fig. 3 is the structure decomposition figure of I part in Fig. 1；
Fig. 4 is the enlarged drawing of II part in Fig. 1.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figures 1-4, a kind of automobile rubber bush fatigue experimental device, including workbench (not shown) and it is arranged on
Fixture 1, axial loading device 2 and radial loading device 3 on the table top of workbench, wherein above-mentioned fixture 1 is treated for clamping
Survey rubber bushing 9.
Above-mentioned fixture 1 include for clamp rubber bushing to be measured 9 outer shroud 92 bearing 11 and compress rubber to be measured vertically
The support 12 at 91 two ends of inner core of glue bushing 9.In the present embodiment bearing 11 be in platform-like and with external fixation device (not shown)
It is fixed, the clamping through-hole 111 with 92 interference fit of outer shroud of rubber bushing to be measured 9 is offered on bearing 11.During assembling, need to use
Forcing press is pressed into rubber bushing 9 in clamping through-hole 111, to prevent rubber bushing 9 from loosening in process of the test.Bearing 11 is parallel
In work top, and the axis of clamping through-hole 111 then perpendicular to work top, i.e., clamping through-hole 111 is along the height side of bearing 11
To insertion, when rubber bushing to be measured 9 is loaded on the fixture 1, its axis direction is vertical with the table top of workbench.The present embodiment
In, above-mentioned support 12 is C-shaped, including L-type frame 121 and the briquetting 122 being connected on 121 vertical beam of L-type frame, is equipped with bearing 11
Rubber bushing to be measured 9 be placed between the briquetting 122 and the crossbeam of L-type frame 121, and the crossbeam and briquetting 122 are and work
The table top for making platform is parallel, and the vertical beam of L-type frame 121 is vertical with the table top of workbench.
Above-mentioned axial loading device 2 includes along the axially arranged axial guide rod 4 of rubber bushing to be measured 9 and with external drive filling
Put (external driver device is hydraulic cylinder in the present embodiment, not shown) first drive link 21 for connecting, the one of the axial guide rod 4
End and 91 axial restraint of above-mentioned inner core, the other end are connected with the first drive link 21 by ball pivot 6.Specifically, a fastening bolt 8
(external screw thread in fastening bolt 8 is not shown) sequentially passes through the first installing hole 123 on the crossbeam of L-type frame 121, rubber to be measured lining
The second installing hole 124 on the centre bore and briquetting 122 of the inner core 91 of set 9, and connected by screw thread with the end of axial guide rod 4
The mode of connecing is locked, so as to the inner core 91 of rubber bushing to be measured 9 is pressed between the crossbeam of briquetting 122 and L-type frame 121, and then
Realize axial guide rod 4 and 91 axial restraint of above-mentioned inner core.
Above-mentioned radial loading device 3 include the radial direction guide rod 5 being radially arranged relative to rubber bushing to be measured 9 and respectively with outward
The second drive link 31, the 3rd transmission rod 32 and the 4th drive link 33 that portion's driving means connect.Wherein above-mentioned radial direction guide rod 5
The vertical beam of one end and L-type frame 121 is fixed, the other end by a ball pivot 6 respectively with the second drive link 31, the 3rd transmission rod 32 and
4th drive link 33 connects.
Further, above-mentioned first drive link 21 is vertical with above-mentioned axial guide rod 4 and radial direction guide rod 5 respectively, and above-mentioned second passes
Lever 31, the 3rd transmission rod 32 and the 4th drive link 33 are mutually perpendicular to, wherein the second drive link 31 it is parallel with axial guide rod 4 and
Vertical with radial direction guide rod 5, the 3rd transmission rod 32 is vertical with axial guide rod 4 and parallel with radial direction guide rod 5, the 4th drive link 33 and footpath
It is vertical to guide rod 5.Radial load load is applied to inner core 91 by the 3rd transmission rod 32 so, by the first drive link 21, second
Drive link 31 and the 4th drive link 33 to the load for applying three relative rotations between inner core 91 and outer shroud 92, so as to preferably
Realize the simulation to 9 actual loading operating mode of rubber bushing.
Further, above-mentioned first drive link 21, the second drive link 31, the 3rd transmission rod 32 and the 4th drive link 33 are equal
Including connecting rod 34 and two corner Force transmission partses 35, above-mentioned two corner Force transmission partses 35 are separately positioned on the two of connecting rod 34
End, and one of corner Force transmission partses 35 are connected with external driver device, another corner Force transmission parts 35 and corresponding ball
Hinge 6 connects.Each corner Force transmission partses 35 include arranging along 34 length direction of connecting rod and orthogonal first plate body
351 and second plate body 352, and the free end of first plate body 351 is connected with external driver device, and the second plate body 352 from
Connected with corresponding ball pivot 6 by end.Rigidity in corner Force transmission partses 35 vertically is very big, and along with the first plate body 351 and the
The rigidity very little of the both direction that two plate bodys, 352 place plane is respectively perpendicular, then make the first plate body 351 and the second plate body 352 equal
It is susceptible to flexural deformation.So external driver device loading load from 35 axis direction of corner Force transmission partses pass through when, edge
The direction vertical with load, the rigidity of corner Force transmission partses 35 are less, thus can have certain displacement.Can by geometrical relationship
Know, along when having a thin tail sheep with load vertical direction, corner Force transmission partses 35 are vertically (outward for one end of corner Force transmission partses 35
The promotion of portion's driving means or draw direction) deflection be the displacement second order in a small amount, be the axle of corner Force transmission partses 35
Can be considered as to length constant.Such as：When less drive displacement is applied to the 3rd transmission rod 32, second drive link 31 is vertically
Displacement can be considered as unaffected (i.e. the bushing inner core corner of the control of the second drive link 31 is unaffected), in the same manner, work as others
When drive link occurs less drive displacement, the displacement vertically of each transmission rod or drive link also can be considered constant, so that the
One drive link 21, the second drive link 31, the 3rd transmission rod 32 and the 4th drive link 33 put on the load of rubber bushing to be measured 9
It is independent of each other, it is ensured that the accuracy of result of the test.
To consolidate 35 internal structure of corner Force transmission partses, and more firmly realize connecting with connecting rod 34 and ball pivot 6
Connect, it is preferable that the corner Force transmission partses 35 are also included for connecting the first of above-mentioned first plate body 351 and the second plate body 352
Contiguous block 353 and the second contiguous block 354, second contiguous block 354 are two pieces and the first plate body 351 of difference and the second plate body
352 free end.In the present embodiment, the corner Force transmission partses 35 are integrated part.
The course of work of the automobile rubber bush fatigue experimental device in the present embodiment is as follows：
(1) loading of rubber bushing to be measured：Rubber bushing 9 is pressed into into clamping through-hole 111 using forcing press, and leads to clamping
Hole 111 clamps the outer shroud 92 of rubber bushing to be measured 9.The rubber bushing 9 that will be equipped with bearing 11 is positioned in support 12, using tight
The inner core 91 of rubber bushing 9 is connected by fixing bolt 8 with axial guide rod 4, and the inner core 91 of rubber bushing to be measured 9 is pressed on briquetting
Between 122 and the crossbeam of L-type frame 121, the loading of rubber bushing to be measured 9 is completed.
(2) load loading：After the completion of rubber bushing to be measured 9 is loaded, open external driver device and add to rubber bushing to be measured 9
Carry test load.Wherein, external driver device promotes the first drive link 21 (to give a displacement, apply direction of displacement such as Fig. 1
Shown in middle a), then change corner of 9 inner core 91 of rubber bushing along Y-axis；External driver device promotes the second drive link 31 (given
Individual displacement, in applying direction of displacement such as Fig. 1 shown in b), then change corner of 9 inner core 91 of rubber bushing along X-axis；External drive
Device promotes the 4th drive link 33 (giving a displacement, in applying direction of displacement such as Fig. 1 shown in d), then change rubber bushing 9
Corner of the inner core 91 along Z axis；External driver device promotes the 3rd transmission rod 32 (to give a power load, apply force direction such as Fig. 1
Shown in middle c), then 9 inner core 91 of rubber bushing is made by Y-direction power (radial load).So as to complete that 9 inner core 91 of rubber bushing to be measured is applied
Radial load load, and to the load of three relative rotations of applying between inner core 91 and outer shroud 92.
It can be seen that, the automobile rubber bush fatigue experimental device simple structure in the present invention, highly versatile, it is only necessary to arrange four
External driver device, and the load output of each external driver device arranges simple and clear, can preferable simulation rubber bushing reality
Border force status, result of the test are true, accurate.
Claims (5)
1. a kind of automobile rubber bush fatigue experimental device, it is characterised in that include for clamping the folder of rubber bushing to be measured (9)
Tool (1), axial loading device (2) and radial loading device (3),
The fixture (1) include for clamp rubber bushing to be measured (9) outer shroud (92) bearing (11) and vertically compress treat
The support (12) at inner core (91) two ends of rubber bushing (9) is surveyed,
The axial loading device (2) is included along the axially arranged axial guide rod (4) of rubber bushing to be measured (9) and and external drive
First drive link (21) of device connection, one end of the axial guide rod (4) and above-mentioned inner core (91) axial restraint, the other end lead to
Cross ball pivot (6) to be connected with the first drive link (21),
The radial loading device (3) include the radial direction guide rod (5) being radially arranged along rubber bushing to be measured (9) and respectively with outside
The second drive link (31), the 3rd transmission rod (32) and the 4th drive link (33) that driving means connect, the radial direction guide rod (5)
One end and above-mentioned support (12) it is fixed, the other end by a ball pivot (6) respectively with the second drive link (31), the 3rd transmission rod
(32) and the 4th drive link (33) connection,
Above-mentioned first drive link (21) is vertical with above-mentioned axial guide rod (4) and radial direction guide rod (5) respectively, above-mentioned second drive link
(31), the 3rd transmission rod (32) and the 4th drive link (33) are mutually perpendicular to, wherein the second drive link (31) and axial guide rod (4)
Parallel and vertical with radial direction guide rod (5), the 3rd transmission rod (32) is vertical with axial guide rod (4) and parallel with radial direction guide rod (5), the
Four drive links (33) are vertical with axial guide rod (4) and radial direction guide rod (5) respectively.
2. automobile rubber bush fatigue experimental device as claimed in claim 1, it is characterised in that first drive link
(21), the second drive link (31), the 3rd transmission rod (32) and the 4th drive link (33) include connecting rod (34) and at least two
Individual corner Force transmission partses (35), above-mentioned two corner Force transmission partses (35) are separately positioned on the two ends of connecting rod (34), and wherein
One corner Force transmission parts (35) is connected with external driver device, another corner Force transmission parts (35) and corresponding ball pivot (6)
Connection,
Each corner Force transmission partses (35) include arranging along connecting rod (34) length direction and orthogonal first plate body
(351) and the second plate body (352), and the free end of first plate body (351) is connected with external driver device, and the second plate body
(352) free end is connected with corresponding ball pivot (6).
3. automobile rubber bush fatigue experimental device as claimed in claim 2, it is characterised in that the corner Force transmission partses
(35) the first contiguous block (353) and the second contiguous block (354) are also included, first contiguous block (353) is connected to the first plate body
(351) between and the second plate body (352), second contiguous block (354) for two pieces and be connected to the first plate body (351) and
The free end of the second plate body (352).
4. automobile rubber bush fatigue experimental device as claimed in claim 1, it is characterised in that the support (12) is C-shaped,
Including L-type frame (121) and the briquetting (122) being connected on the vertical beam of the L-type frame (121), a fastening bolt (8) sequentially passes through L
The crossbeam of type frame (121), the centre bore of the inner core (91) of rubber bushing to be measured (9) and briquetting (122), and with axial guide rod
(4) end locking, so as to the inner core (91) by rubber bushing to be measured (9) is pressed on the horizontal stroke of briquetting (122) and L-type frame (121)
Between beam, and the vertical beam of the end of radial direction guide rod (5) and L-type frame (121) is fixed.
5. the automobile rubber bush fatigue experimental device as described in Claims 1 to 4, it is characterised in that the external drive dress
It is set to hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611253506.9A CN106525413B (en) | 2016-12-30 | 2016-12-30 | A kind of automobile rubber bush fatigue experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611253506.9A CN106525413B (en) | 2016-12-30 | 2016-12-30 | A kind of automobile rubber bush fatigue experimental device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106525413A true CN106525413A (en) | 2017-03-22 |
| CN106525413B CN106525413B (en) | 2019-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611253506.9A Active CN106525413B (en) | 2016-12-30 | 2016-12-30 | A kind of automobile rubber bush fatigue experimental device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907322A (en) * | 2017-12-27 | 2018-04-13 | 上海精智实业股份有限公司 | A kind of three axis resilient bushing fatigue testers |
| CN110553843A (en) * | 2019-10-17 | 2019-12-10 | 上海精智实业股份有限公司 | triaxial elastic bearing bush fatigue testing machine |
| CN111595662A (en) * | 2020-06-03 | 2020-08-28 | 常州市新创智能科技有限公司 | Fatigue test bench |
| CN111929048A (en) * | 2020-08-06 | 2020-11-13 | 广州汽车集团股份有限公司 | Bushing fatigue endurance test device |
| CN111982731A (en) * | 2020-08-26 | 2020-11-24 | 徐州徐工挖掘机械有限公司 | Bushing friction wear test device |
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| CN104729844A (en) * | 2015-03-09 | 2015-06-24 | 芜湖禾田汽车工业有限公司 | Bushing fatigue testing machine |
| CN106033026A (en) * | 2016-06-23 | 2016-10-19 | 奇瑞汽车股份有限公司 | Control arm assembly front and rear bushing fatigue test device and test method |
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| CN110553843B (en) * | 2019-10-17 | 2024-05-31 | 上海精智实业股份有限公司 | Triaxial elastic bearing bush fatigue testing machine |
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| CN111929048A (en) * | 2020-08-06 | 2020-11-13 | 广州汽车集团股份有限公司 | Bushing fatigue endurance test device |
| CN111982731A (en) * | 2020-08-26 | 2020-11-24 | 徐州徐工挖掘机械有限公司 | Bushing friction wear test device |
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