CN112881038B - Mobile tire testing device - Google Patents
Mobile tire testing device Download PDFInfo
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- CN112881038B CN112881038B CN202110289806.7A CN202110289806A CN112881038B CN 112881038 B CN112881038 B CN 112881038B CN 202110289806 A CN202110289806 A CN 202110289806A CN 112881038 B CN112881038 B CN 112881038B
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
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Abstract
The invention discloses a movable tire testing device, which comprises two driving trolley structures and a tire testing table, wherein the driving trolley structures are arranged at intervals, and the tire testing table is connected between the two driving trolley structures; wherein, the tire test platform includes: the test platform structure is respectively connected with the two driving trolley structures; the bearing structure is connected with the test platform structure, and is provided with a rotating shaft for installing the tire to be tested and a six-component force sensor arranged on the rotating shaft; at least two first pneumatic cylinders set up along the horizontal direction interval, and every first pneumatic cylinder all articulates between test platform structure and bearing structure. The device can simulate the friction characteristic between the tire to be tested and the road surface under the real condition.
Description
Technical Field
The invention relates to the technical field of tire pavement testing, in particular to a movable tire testing device.
Background
Tires are important components of transportation means and mainly serve to bear the weight of the transportation means, cushion shock absorption and transmit various acting forces of different roads. The gravity, driving force, moment, impact force, lateral force, braking force and the like of the tire under various working conditions have great influence on the operation dynamic property, braking property, stability, smoothness and fuel economy of the vehicle, and the design parameters and mechanical properties of the tire determine the safety and reliability of the vehicle. It is therefore particularly important to conduct detailed and comprehensive testing analysis of tires.
At present, a plurality of indoor tire test tables developed at home and abroad are fixed. For example, a Flat-Trac CT Plus tire test stand developed by MTS corporation fixes a tire on a machine body, presses the tire against a continuously translating conveyor belt through a vertical cylinder to roll the tire, and rotates the tire by a cylindrical hydraulic cylinder shaft on the machine body to roll the tire and rotates back and forth along a connecting line of two rotating bearings. Although the stationary test stand can simulate part of the characteristics of the tire during running to different degrees, it cannot simulate the friction characteristics between the tire and the road surface in real situations, and the obtained test result is not accurate enough.
Disclosure of Invention
The invention aims to solve the problem that a fixed tire test bed in the prior art cannot simulate the friction characteristics between a tire and a road surface under the real condition.
To solve the above technical problems, an embodiment of the present invention discloses a mobile tire testing device, including: the driving trolley structures are arranged at intervals and connected with the tire test tables between the two driving trolley structures, and the driving trolley structures drive the tire test tables to run; wherein, the tire test platform includes: the test platform structure is respectively connected with the two driving trolley structures; the bearing structure is connected with the test platform structure, and is provided with a rotating shaft for installing the tire to be tested and a six-component force sensor arranged on the rotating shaft; at least two first pneumatic cylinders set up along the horizontal direction interval, and every first pneumatic cylinder all articulates between test platform structure and bearing structure.
By adopting the technical scheme, the tire to be tested is arranged on the rotating shaft of the tire test bench, and the tire to be tested on the tire test bench connected with the driving trolley is driven to move along with the driving trolley by the structural movement of the driving trolley, so that the friction characteristic between the tire to be tested and the road surface under the real condition can be simulated. In addition, in the scheme, the expansion and contraction proportion of each first hydraulic cylinder can be adjusted, so that the running condition of the tire to be tested under different side-tipping angle working conditions under different carrying capacities can be simulated, and a more accurate friction characteristic test result can be obtained.
Optionally, in the mobile tire testing device provided by the embodiment of the invention, the bearing structure includes a fixed portion and a sliding portion, the fixed portion is slidably connected with the sliding portion, and each first hydraulic cylinder is hinged on the fixed portion; the tire testing station further comprises: a traversing motor, a traversing gear and a traversing rack; the transverse moving rack is connected with the sliding part and meshed with the transverse moving gear; the transverse moving gear is connected to the output end of the transverse moving motor and is coaxially arranged with the transverse moving motor; the rotating shaft of the transverse moving motor rotates around the axial direction to drive the transverse moving gear and drive the transverse moving rack to move along the horizontal direction, and the sliding part moves synchronously with the transverse moving rack.
Optionally, in the mobile tire testing device provided by the embodiment of the invention, the testing platform structure includes a platform rotating part and a platform fixing part, and the platform fixing part is respectively connected with the two driving trolley structures; the platform rotating part is rotationally connected to the platform fixing part and can rotate around the vertical direction;
The tire test bench further comprises two second hydraulic cylinder groups which are obliquely arranged in the same horizontal plane, each second hydraulic cylinder group comprises two second hydraulic cylinders which are arranged in parallel, and each second hydraulic cylinder is hinged between the platform fixing part and the platform rotating part; the two second hydraulic cylinders in each group can be simultaneously stretched or compressed to realize the lateral deflection of the platform rotating part.
Optionally, in the mobile tire testing device provided by the embodiment of the invention, the tire testing stand further includes a cylinder, one end of the cylinder is slidably connected with the platform rotation part along the vertical direction, and the other end of the cylinder is hinged with the bearing structure; the centerline of the cylinder is collinear with the centerline of the tire to be tested mounted on the load bearing structure.
Optionally, in the mobile tire testing device provided by the embodiment of the invention, the tire testing stand further includes a weight member symmetrically disposed on the platform fixing portion along the vertical direction.
Optionally, in the mobile tire testing device provided by the embodiment of the invention, the weight is made of concrete and/or iron.
Optionally, in the mobile tire testing device provided by the embodiment of the invention, the driving trolley structure is connected with the tire testing table through bolts.
Optionally, in the mobile tire testing device provided by the embodiment of the present invention, the driving trolley structure includes: the frame structure is connected with the test platform structure; the wheel structure is connected with the frame structure and used for driving the frame structure and the test platform structure to move; a steering motor; the gear set is respectively connected with the steering motor and the wheel structure and is used for driving the wheel structure to change the movement direction under the driving of the steering motor.
Optionally, in the mobile tire testing device provided by the embodiment of the invention, the wheel structure includes a plurality of wheel sets connected to two sides of the frame structure, each wheel set includes two wheels connected by a connecting tube shaft, and an equalizing shaft for simultaneously grounding the two wheels is further connected between the two wheels of each wheel set.
Optionally, in the mobile tire testing device provided by the embodiment of the invention, a jacking structure is arranged on a side of the driving trolley structure.
Drawings
FIG. 1 is a front view of a mobile tire testing device according to one embodiment of the present invention;
FIG. 2 is a top view of a mobile tire testing device according to one embodiment of the present invention;
FIG. 3 is a cross-sectional view of B-B of FIG. 1;
FIG. 4 is a cross-sectional view of C-C of FIG. 3;
FIG. 5 is a schematic view of the tire testing station in a tilted state;
FIG. 6 is a schematic view of the tire testing station in a tilted and traversed condition;
FIG. 7 is a schematic illustration of the second hydraulic cylinder in a laterally displaced condition;
Fig. 8 is a cross-sectional view of A-A of fig. 1.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details for the purpose of providing a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.
The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium; it may be a mechanical connection that is made, or may be an electrical connection. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The fixed tire test stand in the prior art comprises a common tire test stand, namely a rotary drum tire test stand, besides the Flat-Trac CT Plus tire test stand in the background art, and the rotary drum is driven to rotate by a power device, so that the test tire is driven to rotate to simulate the rolling of the tire on the road surface.
Referring to fig. 1, a mobile tire testing apparatus according to an embodiment of the present invention includes: the cart structure 101 and the tire testing station 102 are driven. The number of the driving trolley structures 101 is two, and the two driving trolley structures 101 are arranged at intervals front and back; the tire testing platform 102 is arranged in the middle, namely, the tire testing platform 102 is connected between the two driving trolley structures 101, and the driving trolley structures 101 drive the tire testing platform 102 to run.
Alternatively, the drive cart structure 101 and the tire testing station 102 may be bolted. The mode of bolt connection is adopted, so that disassembly and assembly between the driving trolley structure 101 and the tire testing table 102 are convenient to realize, and the driving trolley structure 101 and the tire testing table 102 are convenient to transport separately.
As shown in fig. 3, the tire testing station 102 may include a test platform structure 121, a load bearing structure 124, and a first hydraulic cylinder 120. Specifically, the platform fixing parts 1212 in the test platform structure 121 are respectively connected with the two driving trolley structures 101, the bearing structure 124 is connected with the platform rotating parts 1211 in the test platform structure 121 through the first hydraulic cylinders 120, the bearing structure 124 is provided with a rotating shaft 126 for installing the tire 125 to be tested and a six-component force sensor 127 installed on the rotating shaft 126, and the six-component force sensor 127 is used for detecting forces and bending moments in three directions of the tire 125 to be tested; the number of the first hydraulic cylinders 120 is at least two, the first hydraulic cylinders 120 are arranged at intervals along the horizontal direction (shown in the X direction in fig. 3), each first hydraulic cylinder 120 is hinged between the test platform structure 121 and the bearing structure 124, and the first hydraulic cylinders 120 can stretch and retract along the extending direction of the cylinder body. It should be noted that the above-mentioned arrangement of the first hydraulic cylinders 120 at intervals in the horizontal direction is that for the device shown in fig. 3 in the initial state, when the carrying structure 124 rotates around the vertical direction (shown in the Y direction in fig. 3), the first hydraulic cylinders also rotate synchronously therewith. Specifically, the first hydraulic cylinder 120 adjusts the vertical force and changes the test tire roll angle mainly by coordinating the elongation of the hydraulic cylinder.
The tire testing station further comprises: a traversing motor, traversing gear 123, and traversing rack 122.
Further, as shown in fig. 4, the bearing structure 124 may include a fixed portion 1241 and a sliding portion 1242, where the fixed portion 1241 is slidably connected to the sliding portion 1242, and each of the first hydraulic cylinders 120 is hinged to the fixed portion 1241.
As shown in fig. 5, two first hydraulic cylinders 120 may be respectively disposed on two sides of the upper end of the bearing structure 124, and because the hydraulic cylinders are disposed in an initial state and extend along a vertical direction, they may extend and retract along the vertical direction, when a tire under a certain load is required to be tested, the extension and retraction amounts of the first hydraulic cylinders 120 on two sides may be respectively adjusted to meet the requirement of the test platform, so as to simulate the situation when the tire 125 to be tested is in rolling running under a certain load.
Specifically, as shown in fig. 6, the traversing rack 122 is fixedly connected to the sliding part 1242, and the traversing rack 122 is engaged with the traversing gear 123; the transverse moving gear 123 is connected to the output end of the transverse moving motor, and the transverse moving gear 123 and the transverse moving motor are coaxially arranged; when the rotating shaft of the transverse moving motor rotates around the axial direction, the transverse moving gear 123 can be driven to synchronously rotate, and the transverse moving gear 123 drives the transverse moving rack 122 to move along the horizontal direction, so that the sliding part 1242 moves synchronously with the transverse moving rack 122, the grounding position of the tire 125 to be tested can be adjusted conveniently, the correct grounding print can be obtained, and the transverse moving function of the tire 125 to be tested can be detected.
Further, the test platform structure comprises a platform rotary part 1211 and a platform fixing part 1212, one end of the first hydraulic cylinder 120 is hinged on the platform rotary part 1211, and the platform fixing part 1212 is respectively connected with the two driving trolley structures 101; the platform rotator 1211 is rotatably coupled to the platform fixing portion 1212, and the platform rotator 1211 is rotatable about a vertical axis. Specifically, the platform rotation portion 1211 is connected to the platform fixing portion 1212 through a rotation bearing 1213.
Referring to fig. 2 and 3, the tire testing stand may further include two second cylinder groups disposed obliquely to each other in the same horizontal plane, each second cylinder group including two second cylinders 109 disposed in parallel, and each second cylinder 109 being hinged between the platform fixing portion 1212 and the platform rotary portion 1211; the two second hydraulic cylinders 109 within each set can be simultaneously stretched or compressed to effect the yaw of the platform turn 1211. That is, the tire testing stand further includes four second hydraulic cylinders 109 disposed in the same horizontal plane, and each of the second hydraulic cylinders 109 is hinged between the platform rotation portion 1211 and the platform fixing portion 1212, respectively. The four second hydraulic cylinders 109 are paired in pairs, each pair of second hydraulic cylinders 109 is arranged in parallel, and the two pairs of hydraulic cylinders are inclined to each other, i.e. the first pair of hydraulic cylinders and the second pair of hydraulic cylinders are arranged in an inclined angle.
It is noted that, considering that the hydraulic cylinders have a certain volume and shape, the above-mentioned four second hydraulic cylinders 109 are in the same horizontal plane, which means that the axes (or telescopic directions) of the four second hydraulic cylinders are in the same horizontal plane.
Specifically, the second hydraulic cylinder 109 can realize cornering of the test wheel by changing the thrust of each pair of hydraulic cylinders. Fig. 7 is a schematic diagram showing the state of extension of the second hydraulic cylinder 109 under different cornering angles, wherein the state corresponding to (a) in fig. 7 is a state of 0 ° cornering angle, the state corresponding to (b) in fig. 7 is a state of-90 ° cornering angle, and the state corresponding to (c) in fig. 7 is a state of 90 ° cornering angle. As can be seen from fig. 7, the purpose of adjusting the cornering angle of the tire to be tested mounted on the tire testing table platform rotary part 1211 can be achieved by adjusting the telescopic lengths (or telescopic proportions) of the four second hydraulic cylinders 109.
Further, referring to fig. 3, the tire testing station further includes a cylinder 119, the cylinder 119 being disposed in a vertical direction, a cylindrical surface of the cylinder 119 being slidably connected to the platform rotation portion 1211 through a bushing, and the other end being hinged to the bearing structure 124; the centerline of the cylinder 119 is designed to be collinear with the centerline of the tire 125 to be tested mounted on the carrier structure 124 so as to ensure that the up and down displacement of the test wheel is always on the centerline. Alternatively, the cylinder 119 may be composed of a seamless steel pipe.
Further, the tire testing machine further includes a weight 118, and the weight 118 may be symmetrically disposed on the platform fixing portion 1212 in a vertical direction. By adjusting the mass of the weight 118 to provide sufficient downforce for testing the tire. Alternatively, the weight may be composed of concrete and/or iron blocks.
Further, as shown in fig. 8, the driving cart structure 101 may include a frame structure 103, a wheel structure, a steering motor 114, and a gear set. The gear sets are respectively connected with the steering motor 114 and the frame structure 103 and are used for driving the wheel structures to realize the steering function under the driving of the steering motor 114. The frame structure 103 is connected with the test platform structure, the wheel structure is connected with the frame structure 103 and used for driving the frame structure 103 to run, the main beam structure of the frame structure 103 can be I-steel, H-steel or rectangular steel, the auxiliary beams are channel steel and H-steel or I-steel and are connected with each other through seamless steel pipes, and the auxiliary beams are used for bearing the weight of the whole test bed and keeping the structural appearance of the frame.
Specifically, the wheel set includes a large gear 116 and a small gear 115 that are engaged with each other, wherein the small gear 115 is axially connected to the steering motor 114, and the large gear 116 is connected to the wheel structure through a slew bearing. In particular implementations, steering motor 114 is capable of providing sufficient rotational speed and torque and converting a high motor end rotational speed to a low output end rotational speed via the wheel set to effect steering of the wheel structure.
Further, the wheel structure may include a plurality of wheel sets connected to both sides of the frame structure, each wheel set includes two wheels 104 connected through a connecting tube shaft 113, and an equalizing shaft 106 for simultaneously landing the two wheels is further connected between the two wheels 104 of each wheel set. Specifically, the wheel 104 may further be composed of a vehicle tire and a rim, the vehicle tire may cushion impact and vibration generated during running on an uneven road surface, and the tires may all be of the same model, so that not only can interchange, but also wear of the tire caused by unbalanced stress can be reduced, loss is reduced, the rim may maintain the inner ring shape of the tire, and the acting force of the overall structure is transmitted to the tire. Further, each wheel is a drive wheel. The connecting tube shaft 113 can connect the rims at the two ends together, the connecting tube shaft 113 can be replaced by a suitable drive axle, and the balance shaft 106 ensures that two tires can land simultaneously under any condition, so that the load of a single tire due to unbalanced force is reduced. Specifically, each wheel set may further include 2 decelerator, 2 service brake, 2 parking brake, and 2 driving motor, so as to smoothly implement acceleration and deceleration of the wheels.
As a specific embodiment of the present invention, the wheel structure may be composed of 8 sets of wheels, arranged in 4 rows of 2 sets each. Each group of wheels comprises 2 tires, 2 rims, 2 reducers, 2 service brakes, 2 parking brakes and 2 driving motors.
Further, the drive trolley structure 101 may also comprise a connecting beam 107 and a suspension hydraulic cylinder 108. Specifically, the tire, the rim, the connection tube shaft 113, the balance shaft 106, the connection beam 107, and the suspension cylinder 108 may constitute a suspension structure, and the connection beam 107 may transmit the load of the entire apparatus to the balance shaft 106. The suspension cylinders 108 may be interconnected to achieve pressure equalization, to mitigate shock during operation, to accommodate road surface adaptation, and to adjust the height of each set of suspension separately in a vehicle stopped condition.
Further, the side of the driving trolley structure 101 may be further provided with a jacking structure, which may be 4 in number and respectively arranged at four corners, and the jacking structure may be composed of a jacking seat 110 and a jacking hydraulic cylinder 111, which can jack up the whole tire testing device during maintenance and tire replacement.
Specifically, the mobile tire testing device has the ability to accelerate to 55 knots (about 102 km/h) within 500 meters, and the device has the ability to reach 65 knots (about 120 km/h) at maximum speed. The tire test bench has basic movement modes such as bidirectional (forward or backward) straight running, normal steering (90-degree turning), 180-degree turning, S-shaped running, inclined running modes and the like, meanwhile, the speed is controllable, the optimal position of a runway can be freely adjusted, and the requirement that the tire test bench performs circular movement with the turning radius not more than 12 meters under the condition of not more than 20 km/h is met. The tire testing device has a cornering angle of +/-90 degrees, a cornering angle of +/-5 degrees and a vertical load of 40t. The device can also simulate the friction characteristics between the tire to be tested and the road surface under the rolling state, the sideslip state and the sideslip state respectively.
The tire testing device provided by the invention can simulate the friction characteristics between the tire to be tested and the road surface under the real condition, can simulate the testing under various different working conditions, and has the advantages of wider application range and higher testing accuracy.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments, and it is not intended to limit the practice of the invention to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289806.7A CN112881038B (en) | 2021-03-17 | 2021-03-17 | Mobile tire testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289806.7A CN112881038B (en) | 2021-03-17 | 2021-03-17 | Mobile tire testing device |
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| CN112881038A CN112881038A (en) | 2021-06-01 |
| CN112881038B true CN112881038B (en) | 2024-11-26 |
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| CN202110289806.7A Active CN112881038B (en) | 2021-03-17 | 2021-03-17 | Mobile tire testing device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465948B (en) * | 2021-06-29 | 2023-10-20 | 安徽德技汽车检测中心有限公司 | Method for testing scratch resistance of car tire |
| CN113984415B (en) * | 2021-11-11 | 2025-03-07 | 中信重工机械股份有限公司 | A device for adjusting tire posture and applying load |
| CN116754416A (en) * | 2023-06-19 | 2023-09-15 | 赛轮集团股份有限公司 | Indoor tire wear performance testing methods, devices, storage media and electronic equipment |
| CN116698449A (en) * | 2023-07-07 | 2023-09-05 | 迪迈自动化(青岛)有限公司 | Tire impression testing machine with inclination angle function |
| US12345603B1 (en) | 2024-09-03 | 2025-07-01 | Eugene R. Lukianov | Mobile tire testing apparatus |
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| CN1918463A (en) * | 2004-02-11 | 2007-02-21 | 空中客车法国公司 | Mobile tyre test stand and method |
| CN109883733A (en) * | 2019-03-21 | 2019-06-14 | 上海振华重工(集团)股份有限公司 | Tyre test stand |
| CN214538555U (en) * | 2021-03-17 | 2021-10-29 | 上海振华重工(集团)股份有限公司 | A mobile tire testing device |
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| US7841232B2 (en) * | 2008-10-02 | 2010-11-30 | Ford Global Technologies, Llc | Method of dynamically measuring stiffness of a wheel and tire assembly |
| CN101975666A (en) * | 2010-09-07 | 2011-02-16 | 江苏大学 | Dynamic-performance testing table of tyre |
| CN102279111B (en) * | 2011-08-31 | 2012-12-19 | 吉林大学 | Rotary table sideslip type lane-changeable tire mechanical characteristic tester |
| CN103353402B (en) * | 2013-07-03 | 2015-06-17 | 吉林大学 | Testing vehicle and testing method for mechanical characteristics of tires under different conditions |
| CN104568476B (en) * | 2015-02-13 | 2017-09-05 | 吉林大学 | A kind of suspension type tire mechanical property testing device |
| CN209764441U (en) * | 2019-03-12 | 2019-12-10 | 昆山顺扬工业成套设备有限公司 | High-precision wheel friction performance test device |
| CN112504700B (en) * | 2020-11-24 | 2024-09-20 | 吉林大学 | Tire test trailer |
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| CN1918463A (en) * | 2004-02-11 | 2007-02-21 | 空中客车法国公司 | Mobile tyre test stand and method |
| CN109883733A (en) * | 2019-03-21 | 2019-06-14 | 上海振华重工(集团)股份有限公司 | Tyre test stand |
| CN214538555U (en) * | 2021-03-17 | 2021-10-29 | 上海振华重工(集团)股份有限公司 | A mobile tire testing device |
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| CN112881038A (en) | 2021-06-01 |
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