Testing device for simulating and testing rolling resistance performance of tire rubber
By designing a test device that simulates the rolling resistance performance of tire rubber, using the test bench, test body and track structure, the problems of high cost and long cycle of tire rubber roller resistance performance testing in the prior art are solved, and low-cost and short-cycle accurate rolling resistance performance testing is achieved.
Patent Information
- Application Number
- CN202422399753.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In the prior art, the test cost of the roll resistance performance of tire rubber is high and the cycle is long, the prediction is inaccurate, and it is difficult to accurately simulate the driving state of the car on the road, resulting in the waste of tread glue and time for the unqualified products.
Design a test device that simulates the rolling resistance performance of tire rubber, including a test bench, a test body, first and second test wheels, support shafts, tracks and timers. By adjusting the weight of the support shaft and the inclination angle, simulates the load on the vehicle shaft and the road state, record resistance to calculate rolling resistance, and eliminates the influence of air and slope resistance.
It realizes low-cost, short-cycle rolling resistance performance testing of tire rubber, can accurately calculate rolling resistance, simplify operation, and reduce the risk of unqualified products.
Smart Images
Figure CN223192571U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of tire rolling resistance performance testing, and more specifically, relates to a test device for simulating and testing the rolling resistance performance of tire rubber. Background Art
[0002] Tire rolling resistance is a key factor affecting vehicle fuel economy. Rolling resistance testing is typically performed on a road coasting test. Finished tire rolling resistance testing is typically performed using methods such as force and torque measurement on a rolling resistance testing machine.
[0003] Existing testing of the rolling resistance performance of tire rubber compounds has the following main problems: the rolling resistance performance prediction of tread rubber and sidewall rubber is generally analyzed through the rubber compound DMA curve, which is neither accurate nor intuitive; the process from rubber compound to finished tire to testing is costly and time-consuming. If defective products with poor rolling resistance performance are produced, tread rubber and time will be wasted. Summary of the Invention
[0004] The purpose of this utility model is to make up for the shortcomings of the existing technology and provide a test device for simulating and testing the rolling resistance performance of tire rubber. The technical solution adopted in this application is:
[0005] A test device for simulating and testing the rolling resistance performance of tire rubber comprises a test bench and a test body, which is movably arranged on the test bench; the test body comprises a first test wheel, a second test wheel and a support shaft, which is fixed between the first test wheel and the second test wheel; the first test wheel and the second test wheel are both made of tread rubber to be tested.
[0006] Preferably, the test bench is provided with a track and a timer, the test body is movably arranged on the track, and the timer is used to record the movement time of the test body on the track; the width of the track is not less than the width of the test body.
[0007] Preferably, the track is sequentially provided with an acceleration track, a test track and a buffer track, the test track is provided between the acceleration track and the buffer track, and both the acceleration track and the buffer track are smoothly connected to the test track.
[0008] Preferably, the test track is arranged horizontally, the acceleration track and the buffer track are arranged inclined, and the bottom ends of the acceleration track and the buffer track are smoothly connected to the test track.
[0009] Preferably, an adjustment mechanism is further provided for adjusting the inclination angle of the track; the adjustment mechanism comprises an adjustment surface and an adjustment block, the adjustment surface is tilted, and the adjustment block rests on the adjustment surface; the adjustment block is provided at the rear end of the track.
[0010] Preferably, the adjustment mechanism is further provided with a movable limiting plate, which is provided at the front end of the track and abuts against the track.
[0011] The advantages of this utility model are as follows:
[0012] The test body is movably arranged on the test bench to simulate the state of a car driving on the road. The sizes of the test body and the test bench are proportionally reduced according to the model of the vehicle driving, and can be appropriately adjusted according to the test needs. A support shaft is provided between the first test wheel and the second test wheel, and the weight of the support shaft can be adjusted. By adjusting the weight of the support shaft, the axle load of the vehicle can be simulated. An initial velocity is provided to the test body so that the test body rolls on the test bench. By recording the running stroke of the test body, the resistance encountered by the test body during the running process can be calculated. By excluding the influence of air resistance and slope resistance, the size of the rolling resistance of the test body can be calculated. The test device has a short test cycle, low cost and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative labor.
[0014] Figure 1 is a schematic diagram of the experimental device;
[0015] Figure 2 A schematic diagram of the test device from another angle.
[0016] Explanation of symbols in the figure:
[0017] 1 is the test bench, 11 is the track, 111 is the acceleration track, 112 is the test track, and 113 is the buffer track;
[0018] 2 is a test body, 21 is a first test wheel, 22 is a second test wheel, and 23 is a support shaft;
[0019] 3 is an adjusting mechanism, 31 is an adjusting surface, 32 is an adjusting block, and 33 is a limiting plate. DETAILED DESCRIPTION
[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0021] The test device for simulating and testing the rolling resistance performance of tire rubber provided in the embodiments of the present application is now described.
[0022] Examples, such as Figures 1 to 2 As shown:
[0023] A test device for simulating and testing the rolling resistance performance of tire rubber, comprising a test bench 1 and a test body 2, which is movably mounted on the test bench 1. The test body 2 is provided with a first test wheel 21, a second test wheel 22, and a support shaft 23, wherein the support shaft 23 is fixedly mounted between the first test wheel 21 and the second test wheel 22. Both the first test wheel 21 and the second test wheel 22 are made of tread rubber to be tested.
[0024] The test body 2 is movably arranged on the test bench 1 to simulate the state of a car driving on the road. The sizes of the test body 2 and the test bench 1 are proportionally reduced according to the model of the vehicle driving. According to the test needs, the sizes of the test body 2 and the test bench 1 can be appropriately adjusted; a support shaft 23 is provided between the first test wheel 21 and the second test wheel 22, and the weight of the support shaft 23 can be adjusted. By adjusting the weight of the support shaft 23, the axle load of the vehicle can be simulated; an initial velocity is provided to the test body 2 so that the test body 2 rolls on the test bench 1. By recording the running stroke of the test body 2, the resistance encountered by the test body 2 during the running process can be calculated. Excluding the influence of air resistance and slope resistance, the magnitude of the rolling resistance of the test body 2 can be calculated; the test cycle of this test device is short, the cost is low, and the operation is simple.
[0025] In this embodiment, test bodies 2 made of different tread rubbers can also be provided with the same initial velocity and placed on the same test bench 1 in sequence for testing to compare the lengths of the running strokes and then compare the rolling resistance performance of different tread rubbers; the longer the running stroke, the better the rolling resistance performance of the tread rubber.
[0026] Test bench 1 is equipped with a track 11 and a timer. Test object 2 is movably mounted on track 11. The timer is used to record the movement time of test object 2 on track 11. The width of track 11 is not less than the width of test object 2. Track 11 can be made of various materials, such as plastic and metal, to characterize the friction coefficient of different road surfaces.
[0027] The test body 2 rolls on the track 11, and the running time of the test body 2 can be conveniently recorded by a timer. By recording the running distance and time of the test body 2, the resistance encountered by the test body 2 during the running process can be calculated. By excluding the influence of air resistance and slope resistance, the magnitude of the rolling resistance of the test body 2 can be calculated more accurately; the magnitude of the rolling resistance of the test body 2 is calculated.
[0028] The track 11 is sequentially provided with an acceleration track 111 , a test track 112 and a buffer track 113 . The test track 112 is provided between the acceleration track 111 and the buffer track 113 . Both the acceleration track 111 and the buffer track 113 are smoothly connected to the test track 112 .
[0029] The test object 2 is released from the acceleration track 111, obtains a suitable initial velocity, and then enters the test track 112; the test object 2 enters the buffer track 113 from the test track 112, first decelerates and then accelerates in the reverse direction to return to the test track 112; the test object 2 enters the acceleration track 111 again from the test track 112, first decelerates and then accelerates in the reverse direction to return to the test track 112. The test object 2 performs reciprocating motion on the track 11, which can reduce the length of the track 11 and reduce the production cost of the track 11.
[0030] The test track 112 is arranged horizontally, and the acceleration track 111 and the buffer track 113 are arranged inclined. The bottom ends of the acceleration track 111 and the buffer track 113 are smoothly connected to the test track 112 .
[0031] The test track 112 is arranged horizontally. When the test body 2 rolls on the test track 112 , it will not be subjected to the power and resistance generated by the slope, which facilitates calculation.
[0032] An adjustment mechanism 3 is also provided, which is used to adjust the inclination angle of the track 11; the adjustment mechanism 3 has an adjustment surface 31 and an adjustment block 32, the adjustment surface 31 is tilted, and the adjustment block 32 is abutted against the adjustment surface 31; the adjustment block 32 is provided at the rear end of the track 11.
[0033] The adjusting block 32 rests on the adjusting surface 31 and slides along the adjusting surface 31 . The inclination angle of the track 11 can be adjusted by adjusting the height of the adjusting block 32 .
[0034] By adjusting the inclination angle of the track 11, the adjustment mechanism 3 can realize the uniform motion of the test body 2 on the test track 112, thereby achieving force balance of the test body 2. The power generated by the downward inclination of the test track 112 and the resistance it encounters are balanced with each other. By recording the inclination angle of the test track 112 when the test body 2 is in force balance, the magnitude of the rolling resistance experienced by the test body 2 can be calculated.
[0035] The adjustment mechanism 3 is further provided with a movable limiting plate 33 . The limiting plate 33 is provided at the front end of the track 11 and abuts against the track 11 .
[0036] The rear end of the rail 11 abuts against the adjustment surface 31 , and the front end of the rail 11 abuts against the limit plate 33 . The adjustment surface 31 and the limit plate 33 jointly define the position and angle of the rail 11 to be stable.
[0037] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.
Claims
1. A test device for simulating and testing the rolling resistance of tire rubber, comprising a test bench, characterized in that: A test body is also provided, which is movably arranged on the test bench; the test body is provided with a first test wheel, a second test wheel and a support shaft, and the support shaft is fixed between the first test wheel and the second test wheel; the first test wheel and the second test wheel are both made of tread rubber to be tested.
2. The test device for simulating and testing the rolling resistance of tire rubber according to claim 1, characterized in that: The test bench is provided with a track and a timer. The test body is movably arranged on the track. The timer is used to record the movement time of the test body on the track. The width of the track is not less than the width of the test body.
3. The test device for simulating and testing the rolling resistance of tire rubber according to claim 2, characterized in that: The track is sequentially provided with an acceleration track, a test track and a buffer track. The test track is arranged between the acceleration track and the buffer track. Both the acceleration track and the buffer track are smoothly connected to the test track.
4. The test device for simulating and testing the rolling resistance of tire rubber according to claim 3, characterized in that: The test track is arranged horizontally, and the acceleration track and the buffer track are both arranged obliquely, and the bottom ends of the acceleration track and the buffer track are smoothly connected to the test track.
5. The test device for simulating and testing the rolling resistance of tire rubber according to any one of claims 2 to 4, characterized in that: An adjustment mechanism is also provided, which is used to adjust the inclination angle of the track; the adjustment mechanism is provided with an adjustment surface and an adjustment block, the adjustment surface is tilted, and the adjustment block is attached to the adjustment surface; the adjustment block is provided at the rear end of the track.
6. The test device for simulating and testing the rolling resistance of tire rubber according to claim 5, characterized in that: The adjustment mechanism is further provided with a movable limiting plate, which is arranged at the front end of the track and abuts against the track.