CN104764606A - Axle hub assembly performance test equipment - Google Patents
Axle hub assembly performance test equipment Download PDFInfo
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- CN104764606A CN104764606A CN201510199751.5A CN201510199751A CN104764606A CN 104764606 A CN104764606 A CN 104764606A CN 201510199751 A CN201510199751 A CN 201510199751A CN 104764606 A CN104764606 A CN 104764606A
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Abstract
The invention discloses axle hub assembly performance test equipment which comprises a carrying device and a loading device, wherein the carrying device is provided with an installing tool which is used for clamping an axle hub assembly to be tested, and the loading device is arranged near the carrying device and used for conducting loading on the axle hub assembly to be tested. The axle hub assembly performance test equipment can provide a detection means for the whole fatigue life of the axle hub assembly.
Description
Technical field
The present invention relates to automotive system parts detection field, particularly relate to a kind of axle hub assembly performance testing apparatus.
Background technology
Axle hub assembly is the drive disk assembly of wheel, and it comprises wheel hub, hub inner bearing, wheel hub outer bearing, hub oil seal and oil sealing seat ring.The correlation technique of the fatigue lifetime of bearing is evaluated in current existence, but, not used for the equipment detected the fatigue lifetime of axle hub assembly integral.
Therefore, wish that a kind of axle hub assembly performance testing apparatus carries out detection fatigue lifetime to axle hub assembly.
Summary of the invention
The object of the present invention is to provide a kind of axle hub assembly performance testing apparatus to overcome or at least alleviate at least one the above-mentioned defect in prior art.
For achieving the above object, the invention provides a kind of axle hub assembly performance testing apparatus, described axle hub assembly performance testing apparatus comprises carrying apparatus and charger, wherein: described carrying apparatus has the mounting tool treating axle hub assembly for clamping; Described charger closes on described carrying apparatus and arranges, for loading described axle hub assembly to be measured.
Further, described carrying apparatus comprises testing table further, and described mounting tool is arranged on the mounting tool on described testing table, and described mounting tool practical set mode on simulating vehicle is installed described axle hub assembly to be measured.
Further, described mounting tool comprise wheel hub installing mechanism, the stationary hub axle of hub spindle that is fixedly connected with axle hub assembly on simulating vehicle and the first clamping device; Wherein: described wheel hub installing mechanism has transmission shaft, one end of this transmission shaft drives with described rotating speed simulation mechanism and is connected, and the other end and described axle hub assembly to be measured are in transmission connection; Described stationary hub axle and described axle hub assembly to be measured are rotationally connected; Described first clamping device is used for gripping described stationary hub axle.
Further, described wheel hub installing mechanism also has the shell of built-in described transmission shaft, and described mounting tool also comprises the second clamping device gripped described shell.
Further, described second clamping device comprises the clamping body of band central through hole, and the inner edge of described central through hole is intervally distributed with the raised structures preventing described shell from rotating.
Further, the two bottom sides of described clamping body forms connecting portion respectively to outer horizontal-extending, and this connecting portion offers mounting hole, and and transition face between described clamping body be arc-shaped.
Further, described mounting tool also comprises the first firm banking, and it is provided with chute and bolt hole along described transmission shaft direction, and described chute can be slidably matched with described second clamping device, and described bolt hole is fixedly connected with described mounting hole by bolt.
Further, the lateral wall of described stationary hub axle is provided with the pedestal matched with the bearing in described axle hub assembly to be measured.
Further, described charger comprises load simulated mechanism, rotating speed simulation mechanism and stressed bearing, wherein: described load simulated mechanism is used for applying axis and/or vertical force to described axle hub assembly to be measured; Described rotating speed simulation mechanism is used for driving with described axle hub assembly to be measured being connected, to control the rotating speed of described axle hub assembly to be measured.
Further, described stressed bearing comprises and loads body and extension, wherein: described loading bodies top is connected described first clamping device, for bearing described side force; Described extension is arranged on described loading body and extends to immediately below described axle hub assembly to be measured in the horizontal direction, for bearing described vertical force.
Further, described axle hub assembly performance testing apparatus also comprises mechanics sensor, the load information that described mechanics sensor applies for gathering described charger.
Further, described axle hub assembly performance testing apparatus also comprises temperature sensor, and described temperature sensor is arranged on described axle hub assembly to be measured, for gathering the temperature information of described axle hub assembly to be measured.
Because the present invention is provided with carrying apparatus and charger, carrying apparatus assembles the part of axle hub assembly on simulating vehicle, for axle hub assembly to be measured provides support, charger is used for the vehicle condition analog parameter according to presetting, treat measuring car bridge hub assembly to load, therefore the present invention both can according to actual entrucking situation by axle hub general assembly to be measured to carrying apparatus, can also be loaded axle hub assembly according to actual vehicle condition by charger, that is, in experimentation, the assembling situation of axle hub assembly and vehicle condition all can be arranged to consistent with actual vehicle condition, and the fatigue lifetime of axle hub assembly integral is judged according to the degree of wear of axle hub assembly to be measured.In sum, axle hub assembly performance testing apparatus provided by the invention can provide detection means for the fatigue lifetime of axle hub assembly integral.
Accompanying drawing explanation
Schematic perspective view after the axle hub assembly performance testing apparatus fit on axle hub assembly that Fig. 1 provides according to an embodiment for the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the schematic perspective view of the second clamping device in Fig. 1;
Fig. 5 is the front view of the wheel hub installing mechanism in Fig. 1;
Fig. 6 is the side view of Fig. 5;
Fig. 7 is the schematic perspective view of stationary hub axle in Fig. 1;
Fig. 8 is the vertical view of firm banking in Fig. 1;
Fig. 9 is the force analysis schematic diagram of wheel hub in actual vehicle condition.
Reference numeral:
Embodiment
For making object of the invention process, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
In describing the invention; it will be appreciated that; term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limiting the scope of the invention.
Schematic diagram after the axle hub assembly performance testing apparatus fit on axle hub assembly that to be the present invention provide according to an embodiment shown in Fig. 1.As shown in Figure 1, the axle hub assembly performance testing apparatus that the present embodiment provides comprises carrying apparatus 1 and charger 2, wherein:
Carrying apparatus 1 has the mounting tool 13 treating axle hub assembly 3 for clamping, and the part of assembling and driving axle hub assembly on simulating vehicle, for axle hub assembly 3 to be measured provides support power and driving force.That is, carrying apparatus 1 can be treated measuring car bridge hub assembly 3 according to actual entrucking situation and assembles.Charger 2 closes on carrying apparatus 1 and arranges, and for according to the vehicle condition analog parameter preset, loads, make axle hub assembly 3 to be measured carry out continuous firing according to real vehicle operating mode to described axle hub assembly 3 to be measured.
Above-mentioned " vehicle condition analog parameter " comprises loading parameters, such as: the rotating speed of vertical force, side force and axle hub assembly 3 to be measured." vertical force " herein refers to power vertically, and " side force " herein refers to the power perpendicular to " axle hub assembly 3 to be measured " place plane.Above-mentioned " vehicle condition analog parameter " mainly according to " axle hub assembly 3 to be measured " the vehicle, actual vehicle condition etc. that are suitable for pre-set.Therefore, consistent with actual applying working condition by vehicle condition analog parameter is arranged to, can provide more close to the simulated environment of automobile real vehicle state for test fatigue lifetime of axle hub assembly 3.
Above-mentioned " vehicle condition analog parameter " also comprises test number (TN), the time of at every turn testing and dead time etc.Wherein, " dead time " refers to the dead time controlled between axle hub assembly 3 to be measured twice action, is similar to: action (past) 1 second-pause for 2 seconds-action (answering) 1 second-paused for 2 seconds.By the time of test number (TN) and each test, then in conjunction with the degree of wear of axle hub assembly 3 to be measured, just can judge test fatigue lifetime of axle hub assembly 3.Certainly, the time of test number (TN) and each test can be determined by artificial experience, therefore, and the leading indicator that number of times and test period (time that test period=test number (TN) * tests at every turn) will be tested as fatigue lifetime of axle hub assembly 3.
To sum up, the present invention both can according to actual entrucking situation by axle hub general assembly to be measured to carrying apparatus, can also be loaded axle hub assembly according to actual vehicle condition by charger, that is, in experimentation, the assembling situation of axle hub assembly and vehicle condition all can be arranged to consistent with actual vehicle condition, and judge the fatigue lifetime of axle hub assembly integral according to the degree of wear of axle hub assembly to be measured.In sum, axle hub assembly performance testing apparatus provided by the invention can for providing the fatigue lifetime of axle hub assembly integral more close to the simulated environment of vehicle real vehicle state, for good directive function is played in product development.
As shown in Figures 1 to 3, as a kind of preferred implementation of carrying apparatus 1, it comprises testing table 11.Wherein: what testing table 11 adopted is iron bottom plate, and being fixed on firm, smooth ground, is T-slot structure, fixation workpiece is convenient.Mounting tool 13 is arranged on testing table 11.Mounting tool 13 assembles the part (being such as steering knuckle or Drive axle housing etc.) of axle hub assembly on simulating vehicle, treat measuring car bridge hub assembly 3 according to practical set mode to install, for the assembling being arranged on the axle hub assembly 3 to be measured on mounting tool 13 provides the simulated environment close to real vehicle.Generally speaking, make axle hub assembly in a test device close to vehicle real vehicle state, make the data that record more accurate, for good directive function is played in product development and improvement.
Preferably, mounting tool 13 comprises wheel hub installing mechanism 131, stationary hub axle 132 and the first clamping device 133.Wherein: wheel hub installing mechanism 131 has transmission shaft 1311, one end of this transmission shaft 1311 drives with rotating speed simulation mechanism 24 and is connected, and the other end and axle hub assembly 3 to be measured are in transmission connection.Therefore, the power that rotating speed simulation mechanism 24 exports can pass to axle hub assembly 3 to be measured by transmission shaft 1311, rotates according to the rotating speed preset to control axle hub assembly 3 to be measured.The hub spindle that stationary hub axle 132 is fixedly connected with axle hub assembly on simulating vehicle, for being rotationally connected with axle hub assembly 3 to be measured, the bearing in such as real vehicle operating mode connects.First clamping device 133 for gripping stationary hub axle 132, than journal stirrup as shown in Figure 2 or supporting structure etc.By wheel hub installing mechanism 131 and stationary hub axle 132, can ensure that axle hub assembly 3 to be measured assembles according to actual entrucking situation, be conducive to provide the simulated environment close to real vehicle.
As shown in Fig. 1 to 3, Fig. 5 and Fig. 6, in above-described embodiment, wheel hub installing mechanism 131 also has the shell 1312 of built-in transmission shaft 1311, and shell 1312 has the installed surface 1313 axle hub assembly 3 to be measured being installed to mounting tool 13, installed surface 1313 is provided with some connecting holes 1314.In other embodiments of the invention, connecting hole 1314 can also be set to threaded hole, connect in the process of wheel hub installing mechanism 131 of the present invention, by the component such as bolt or connecting pin, wheel hub installing mechanism 131 of the present invention can be coupled together with axle hub assembly 3 to be measured.
Mounting tool 13 also comprises the second clamping device 134, second clamping device 134 for gripping shell 1312.The structure that second clamping device 134 also can adopt the first clamping device 133 similar, than supporting constructions etc. such as journal stirrup as shown in Figure 2 or supports.The quantity of the second clamping device 134 shown in Fig. 2 is two, is also shell 1312 and provides two strong points, to realize the installation of wheel hub installing mechanism 131 and to fix.
As shown in Figure 4, in above-described embodiment, second clamping device 134 comprises the clamping body 1342 of band central through hole 1341, the inner edge of central through hole 1341 is intervally distributed with raised structures 1343, raised structures 1343 can with shell 1312 compression fit, realize fixing to clamp shell 1312 further, prevent shell 1312 from rotating.Be understandable that, the present invention is not limited thereto the structure of kind of compression fit, other can realize supporting but prevent the structure of rotating also within protection scope of the present invention.
The two bottom sides of clamping body 1342 forms connecting portion 1344 respectively to outer horizontal-extending, and this connecting portion 1344 offers mounting hole 1345.In other embodiments of the invention, mounting hole 1345 can also be set to threaded hole, connects in the process of clamping body 1342 of the present invention, can be coupled together by clamping body 1342 of the present invention by the component such as bolt or connecting pin with other parts.Transition face between connecting portion 1344 and clamping body 1342 is arc-shaped, and it is conducive to avoiding stress to concentrate.
In the various embodiments described above, mounting tool 13 also comprises the first firm banking 135, and itself and testing table 11 are bolted fixing, and mounting or dismounting are convenient.First firm banking 135 is provided with chute 1351 and connecting hole 1352 along transmission shaft 1311 direction, wherein: chute 1351 is divided into left chute and right rail, correspondingly, second clamping device 134 is provided with left slider and right slide block, by the cooperation between slide block and chute, the first firm banking 135 and the second clamping device 134 can be made to be formed and to be slidably matched.That is, slip second clamping device 134 can be passed through, adjust the position relationship of the second clamping device 134 relative to the first firm banking 135, namely the supporting point position of the second clamping device 134 pairs of shells 1312 is changed, with the problem that the weight solving different axle hub assembly 3 to be measured is distinct.When the second clamping device 134 is adjusted to predeterminated position time, the component such as threaded screw fasteners or connecting pin can be adopted through connecting hole 1352 and mounting hole 1345, to be fixedly connected with the second clamping device 134 and the first firm banking 135.First firm banking 135 is also fixedly connected with rotating speed simulation mechanism 24, aligns with the center line of the power intake of transmission shaft 1311 to make the clutch end of rotating speed simulation mechanism 24.
In above-described embodiment, stationary hub axle 132 adopts multidiameter, and namely lateral wall is provided with the pedestal 1321 matched with the bearing in axle hub assembly 3 to be measured.The end face of stationary hub axle 132 is provided with bolt hole.Stationary hub axle 132, through the center pit of the first clamping device 133, is connected with axle hub assembly 3 to be measured by bearing.
In above-described embodiment, charger 2, for according to the vehicle condition analog parameter preset, loads described axle hub assembly 3 to be measured, makes axle hub assembly 3 to be measured carry out work according to real vehicle operating mode.Charger 2 comprises load simulated mechanism, rotating speed simulation mechanism 24 and stressed bearing, wherein:
Described load simulated mechanism such as can adopt existing hydraulic mechanism to realize, it is for applying side force (the A direction in Fig. 2) and/or vertical force (the B direction in Fig. 2) according to the load preset to axle hub assembly 3 to be measured, in actual tests, the peak load of test should more than 160000N.Described load simulated mechanism can ensureing to arrange load exactly, checking that load and deflection make equipment automatically stop when also can stroke be made breaking down to increase.
Shown in Fig. 9 is the force analysis schematic diagram of wheel hub.As shown in Figure 9, under the extreme case that car load travels, following several load can act on wheel hub simultaneously.
The first load: ground is in the face of the anchorage force B of wheel hub; The second load: for Ackermann steer angle is along the side force A of vehicle bridge axis effect; 3rd load: to be moment of flexure Q, moment of flexure Q by the anchorage force B in the first load to act on the isometric arm of distance E with wheel disc flange face M to wheel center N and to produce, Q=B × E for this kind of load.Because the third load is also produced by the first load, so only taken the first and the second load in axle hub performance test apparatus provided by the present invention, that is: the vertical force B applied in Fig. 2 is equivalent to the first load, side force A is equivalent to the second load, therefore the load that the present invention applies can be consistent with actual vehicle condition, is conducive to provide the simulated environment close to real vehicle.
Rotating speed simulation mechanism 24 is such as the power source parts such as engine for the part of analog-driven axle hub assembly.Rotating speed simulation mechanism 24 is connected for driving with axle hub assembly 3 to be measured, to control the rotating speed of axle hub assembly 3 to be measured.Rotating speed simulation mechanism 24 can adopt motor, and the power demand fulfillment of motor can simulate car load actual vehicle speed, makes rotating speed simulation mechanism 24 provide the rotating drive power consistent with real vehicle operating mode, to improve the authenticity of simulation for axle hub assembly 3 to be measured.
Described stressed bearing specifically can comprise loading body 21 and extension 22, wherein: load body 21 top and to be connected the first clamping device 133, for bearing described side force, so that described side force is delivered to axle hub assembly 3 to be measured by the first clamping device 133 and stationary hub axle 132 successively.Extension 22 is arranged on and loads body 21 side, and extends in the horizontal direction immediately below axle hub assembly 3 to be measured.Extension 22 for bearing described vertical force, so that described vertical force is delivered to axle hub assembly 3 to be measured by the first clamping device 133 and stationary hub axle 132 successively.
In fact, as shown in Figure 2, the first clamping device 133, loading body 21 and extension 22 can be one-body molded, and this integral forming process can adopt known method to obtain.
Described stressed bearing also comprises the second firm banking 23, and itself and testing table 11 are bolted fixing, and mounting or dismounting are convenient.Second firm banking 23 adopts strengthens structure, firm stable.
Axle hub assembly 3 to be tested can be the axle hub assembly that direct entrucking uses, the representative new vehicle bridge hub assembly that also can form through complete machining, can assemble for vehicle bridge, and each axle hub assembly can only be used for single test.The part that axle hub assembly specifically comprises is as shown in the table.
Test unit provided by the present invention can carry out load test according to actual condition, simulate actual entrucking situation completely, both can fatigue lifetime of overall evaluation axle hub assembly, also bearing fatigue life can be evaluated, the sealing property of oil sealing can also be evaluated, the test of above-mentioned various performance be all that the difference of various performance test is only that test institute uses or parts to be evaluated difference using number of times and test period as main Judging index.Decision method is similar to generally: when the fatigue lifetime of overall evaluation axle hub assembly tests, if after axle hub assembly 3 has been tested according to the number of times preset and test period, still stand intact, then judge that the fatigue lifetime of this axle hub assembly 3 is as excellent; If axle hub assembly 3 has tested rear badly broken according to the number of times preset and test period, then judge that the fatigue lifetime of this axle hub assembly 3 is as difference.
In the various embodiments described above, axle hub assembly performance testing apparatus also comprises mechanics sensor 4.The load information that mechanics sensor 4 applies for gathering charger 2, its quantity is at least two, is separately positioned on the stress point loading body 21 and extension 22, as A point, B point in Fig. 2.Whether the load information that mechanics sensor 4 collects carries out the basis for estimation loaded according to the load preset with the described load simulated mechanism that conducts a survey, check that frequency can be arranged within the scope of 0.52 to 2 hertz.
In the various embodiments described above, axle hub assembly performance testing apparatus also comprises temperature sensor 5, it is exactly outside wheel hub that temperature sensor 5 is arranged on, and can adopt contactless temperature sensor, for monitoring the temperature regime of axle hub assembly 3 to be measured in whole experimentation.When temperature sensor 5 uses, such as when the temperature detected is more than 120 °, then show that other parts of axle hub assembly 3 to be measured have occurred there is problem, now testing crew needs to stop test at once, can continue test or rearrange test after investigation problem Producing reason.
Finally it is to be noted: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit.Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. an axle hub assembly performance testing apparatus, it is characterized in that: comprise carrying apparatus (1) and charger (2), wherein: described carrying apparatus (1) has the mounting tool (13) treating axle hub assembly (3) for clamping; Described charger (2) closes on described carrying apparatus (1) and arranges, for loading described axle hub assembly (3) to be measured.
2. axle hub assembly performance testing apparatus as claimed in claim 1, it is characterized in that: described carrying apparatus (1) comprises testing table (11) further, described mounting tool (13) is arranged on described testing table (11), and on simulating vehicle, practical set mode is treated measuring car bridge hub assembly (3) and installed.
3. axle hub assembly performance testing apparatus as claimed in claim 2, is characterized in that: described mounting tool (13) comprises wheel hub installing mechanism (131), stationary hub axle (132) and the first clamping device (133); Wherein: described wheel hub installing mechanism (131) has transmission shaft (1311), one end of this transmission shaft (1311) drives with described rotating speed simulation mechanism (24) and is connected, and the other end and described axle hub assembly (3) to be measured are in transmission connection; The stationary hub axle of the hub spindle that described stationary hub axle (132) is fixedly connected with axle hub assembly on simulating vehicle, is rotationally connected with described axle hub assembly (3) to be measured; Described first clamping device (133) is for gripping described stationary hub axle (132).
4. axle hub assembly performance testing apparatus as claimed in claim 3, it is characterized in that: described wheel hub installing mechanism (131) also has the shell (1312) of built-in described transmission shaft (1311), described mounting tool (13) also comprises the second clamping device (134) gripped described shell (1312).
5. axle hub assembly performance testing apparatus as claimed in claim 4, it is characterized in that: described second clamping device (134) comprises the clamping body (1342) of band central through hole (1341), and the inner edge of described central through hole (1341) is intervally distributed with the raised structures (1343) preventing described shell (1312) from rotating.
6. axle hub assembly performance testing apparatus as claimed in claim 5, it is characterized in that: the two bottom sides of described clamping body (1342) forms connecting portion (1344) respectively to outer horizontal-extending, this connecting portion (1344) offers mounting hole (1345), and and transition face between described clamping body (1342) be arc-shaped.
7. axle hub assembly performance testing apparatus as claimed in claim 6, it is characterized in that: described mounting tool (13) also comprises the first firm banking (135), it is provided with chute (1351) and bolt hole (1352) along described transmission shaft (1311) direction, described chute (1351) can be slidably matched with described second clamping device (134), and described bolt hole (1352) is fixedly connected with described mounting hole (1345) by bolt.
8. axle hub assembly performance testing apparatus as claimed in claim 3, is characterized in that: the lateral wall of described stationary hub axle (132) is provided with the pedestal (1321) matched with the bearing in described axle hub assembly (3) to be measured.
9. axle hub assembly performance testing apparatus as claimed in claim 3, it is characterized in that: described charger (2) comprises load simulated mechanism, rotating speed simulation mechanism (24) and stressed bearing, wherein: described load simulated mechanism is used for applying axis and/or vertical force to described axle hub assembly (3) to be measured; Described rotating speed simulation mechanism (24) is connected for driving with described axle hub assembly (3) to be measured, to control the rotating speed of described axle hub assembly (3) to be measured.
10. axle hub assembly performance testing apparatus as claimed in claim 9, it is characterized in that: described stressed bearing comprises loading body (21) and extension (22), wherein: described loading body (21) top is connected described first clamping device (133), for bearing described side force; Described extension (22) is arranged on described loading body (21) and extends to immediately below described axle hub assembly (3) to be measured in the horizontal direction, for bearing described vertical force.
11. axle hub assembly performance testing apparatuss as claimed in claim 1, is characterized in that: also comprise mechanics sensor (4), its load information applied for gathering described charger (2).
12. axle hub assembly performance testing apparatuss as claimed in claim 1, it is characterized in that: also comprise temperature sensor (5), it is arranged on described axle hub assembly (3) to be measured, for gathering the temperature information of described axle hub assembly (3) to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510199751.5A CN104764606B (en) | 2015-04-23 | 2015-04-23 | A kind of axle hub assembly performance test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510199751.5A CN104764606B (en) | 2015-04-23 | 2015-04-23 | A kind of axle hub assembly performance test device |
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| CN104764606A true CN104764606A (en) | 2015-07-08 |
| CN104764606B CN104764606B (en) | 2017-08-29 |
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| CN108489739A (en) * | 2016-02-25 | 2018-09-04 | 潘唯锡 | A kind of vehicle hub alternation tangential stress mechanism for testing |
| CN110646137A (en) * | 2019-09-29 | 2020-01-03 | 杭州仁源汽配有限公司 | Heavy-duty hub unit for a motor vehicle and method for operating the same |
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| Publication number | Publication date |
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| CN104764606B (en) | 2017-08-29 |
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