Device for testing heavy vehicle tire loading
By designing a tire loading test device with a detachable limiter and a rotational adjustment mechanism, the problem of low accuracy in tire 3D modeling was solved, enabling efficient acquisition of multi-faceted tire parameters and improving the accuracy and richness of laboratory testing data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIJIAZHUANG INST OF RAILWAY TECH
- Filing Date
- 2025-12-18
- Publication Date
- 2026-07-24
AI Technical Summary
Existing technologies make it difficult to construct accurate three-dimensional solid tire models in the laboratory to study the multi-scale damage evolution mechanism of viscoelastic asphalt pavement caused by heavy vehicles, and there is a lack of effective tire axle limiting and rotation adjustment devices.
A heavy vehicle tire loading test device was designed, which includes a rectangular support frame and support fixtures. By using limiters for the insert blocks and keyholes to restrict the rotation of the shaft, the tire can be detachably limited and rotated for adjustment, thereby improving the accuracy of tire 3D modeling.
The detachable limiter and rotation adjustment device enable parameter acquisition from multiple circumferential surfaces of the tire, improving the accuracy of tire 3D modeling and the number of data samples acquired, thus meeting the needs of laboratory testing.
Smart Images
Figure CN224552719U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a tire performance testing device, specifically a device for testing the load on heavy vehicle tires. Background Technology
[0002] Researching the multi-scale damage evolution mechanism of viscoelastic asphalt pavement under heavy vehicle loads, and the intrinsic relationship between macroscopic phenomena and micromechanical behavior of early-stage asphalt pavement failure, can provide a theoretical basis for the structural design of asphalt pavement engineering and pavement maintenance during operation.
[0003] In the laboratory, to study the multi-scale damage evolution mechanism of viscoelastic asphalt pavement under heavy vehicle loading, it is necessary to construct a three-dimensional solid tire model to solve the nonlinear distributed force and tire imprint between the tire and the road, and to construct a multi-rigid-body vehicle model containing the solid tire, thereby reasonably characterizing the complex contact relationship between the viscoelastic tire and the road. Constructing the three-dimensional solid tire model requires setting up a testing device in the laboratory to collect the actual parameters of the tire and improve the modeling accuracy. Therefore, the testing device must meet the following conditions: the tire axle can be locked to meet the needs of static loading tests; the tire axle can be unlocked to rotate the tire and adjust the tire's test surface, increasing the number of samples and improving testing accuracy. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a heavy vehicle tire loading test device that allows the tire shaft to be locked or unlocked and then rotated to adjust the tire.
[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: A heavy vehicle tire loading test device, the key technology of which is that it includes a rectangular support frame and a support fixture disposed at the bottom of the support frame; the support fixture includes: Two symmetrical columns; Two sets of bearing housing assemblies are respectively installed on the two columns, and each bearing housing assembly includes a bearing housing and a bearing cover detachably installed on the bearing housing; A rotating shaft assembly rotatably mounted on the two bearing housing assemblies includes a connecting shaft, a flange, and a support shaft connected concentrically in sequence. The flange is connected to a tire. One end of the connecting shaft protrudes from the column and has a keyhole. A mating block is provided on one side of the column corresponding to the connecting shaft. A limiter is detachably installed on the mating block and the keyhole to limit the rotation of the rotating shaft assembly.
[0006] In one embodiment of this utility model, the limiter includes a connecting plate, and a plug and a key body disposed on the side of the connecting plate. A matching slot is provided on the matching plug corresponding to the plug. The plug and key body of the limiter are respectively inserted into the matching slot and the key hole to limit the rotation of the rotating shaft assembly.
[0007] In one embodiment of this utility model, the cross-section of the keyhole is a regular polygon, and the axis of the keyhole corresponds to the rotation axis of the rotating shaft assembly.
[0008] In one embodiment of this utility model, a handle is provided on the side of the connecting plate away from the insert block and the key body.
[0009] In one embodiment of this utility model, a pin hole is provided through the interlocking block, the pin hole intersects with the interlocking slot, and an interlocking block pin hole is provided on the interlocking block corresponding to the pin hole. The interlocking block pin hole and the pin hole are opposite to each other to insert a pin to prevent the limiter from falling off.
[0010] In one embodiment of this utility model, bearings are provided on both the connecting shaft and the supporting shaft. An arc-shaped bottom receiving groove is provided on the bearing seat corresponding to the bearing, and a top receiving groove is provided on the bearing cover corresponding to the bearing. The bearing cover and the bearing seat are connected by bolts to fix the bearing, thereby rotatably supporting the rotating shaft assembly.
[0011] In one embodiment of this utility model, a connecting end shaft is provided at one end of the connecting shaft, the diameter of the connecting end shaft being smaller than the diameter of the connecting shaft to form a shoulder structure of the connecting shaft, and the inner ring of the bearing abuts against the shoulder structure of the connecting shaft; One end of the support shaft is provided with a support end shaft, the diameter of which is smaller than the diameter of the connecting shaft to form a shoulder structure of the support shaft, and the inner ring of the bearing abuts against the shoulder structure of the support shaft.
[0012] The beneficial effects of adopting the above technical solution are as follows: The support fixture provided by this utility model includes two columns and a rotating shaft assembly rotatably mounted on the two columns. The tire is mounted on the rotating shaft assembly. One end of the connecting shaft of the rotating shaft assembly protrudes from the column and has a keyhole. A mating block is provided on the corresponding column. A limiter can be inserted using the mating block and the keyhole. By pulling out the limiter, the rotating shaft assembly can be rotated, thereby changing the orientation of the tire relative to the testing instrument. Then, the limiter is inserted to fix the tire and restrict its rotation, thereby realizing the acquisition of parameters on multiple circumferential surfaces of the tire and improving the accuracy of tire 3D modeling. Attached Figure Description
[0013] Figure 1This is a structural schematic diagram of an embodiment.
[0014] Figure 2 This is a structural schematic diagram of the bearing assembly after it has been disassembled, showing the shaft assembly and the tire from above.
[0015] Figure 3 This is a schematic diagram of the structure of the column, bearing seat, interlocking block and limiter in the embodiment.
[0016] Figure 4 A schematic diagram of the bearing assembly and the shaft assembly from below the tire after the bearing assembly of the embodiment has been disassembled.
[0017] Figure 5 This is a structural schematic diagram of the axle assembly after disassembly and from the right side view of the tire, according to an embodiment.
[0018] Figure 6 This is a structural schematic diagram of the axle assembly after disassembly and from the left side view of the tire, as shown in the embodiment.
[0019] Wherein: 100 Support frame; 101 Mounting hole; 102 Shaft hole; 103 Bearing with seat; 200 Supporting fixtures; 300 Tire; 301 Wheel flange; 302 Wheel hub bore; 400 Radial Load Test Mechanism; 1. Column; 1-1. Column top; 1-2. Column base; 2. Bearing housing; 2-1. Bottom receiving groove; 3. Bearing cover; 4 pairs of inserts; 4-1 pairs of slots; 4-2 pin holes; 5 Limiter; 5-1 Connecting plate; 5-2 Insert block; 5-3 Key body; 5-4 Handle; 5-5 Insert block pin hole; 6. Pins; 7 Flange; 8 Connecting shaft; 8-1 Connecting end shaft; 8-2 Keyhole; 9 Support shaft; 9-1 Support end shaft; 10 Bearing. Detailed Implementation
[0020] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.
[0021] See Figure 1 The heavy vehicle tire loading test apparatus of this embodiment includes a rectangular support frame 100 and a support fixture 200 disposed on the bottom of the support frame 100. A radial loading test mechanism is disposed above the rectangular support frame 100 for applying a vertically downward radial load to the tire to test the parameters of the tire 300 at this time.
[0022] Specifically, see Figures 2 to 6 The support fixture 200 includes two symmetrical columns 1, two sets of bearing seat assemblies respectively set on the two columns 1, and a rotating shaft assembly rotatably set on the two bearing seat assemblies.
[0023] The pivot assembly includes, for example, Figure 5 and Figure 6 The connecting shaft 8, flange 7, and support shaft 9 are shown as concentrically connected in sequence. See also... Figure 6 The hub of the tire 300 includes a hub flange 301 and a hub shaft hole 302 opened on the hub flange 301. In this embodiment, the flange 7 is connected and fixed to the hub flange 301 by a through bolt assembly. The connecting shaft 8, the flange 7 and the support shaft 9 are fixedly connected relative to the through bolt assembly, and the connection point of the three is located in the hub shaft hole 302.
[0024] See Figure 2 and Figure 3 One end of the connecting shaft 8 protrudes from the column 1 and has a keyhole 8-2. A mating block 4 is welded to one side of the column 1 corresponding to the connecting shaft 8. Limiters 5 are detachably installed on the mating block 4 and the keyhole 8-2 to limit the rotation of the shaft assembly.
[0025] In this embodiment, the limiter 5 is pluggable and detachable on the end connected to the adapter shaft. When connecting the adapter shaft, the limiter 5 must be pulled out first. This design can prevent the limiter 5 from being left on the shaft assembly after the motor output shaft is connected to the shaft assembly, which could cause an accident that obstructs the motor drive.
[0026] See Figure 1 The side of the support frame 100 has a through shaft hole 102 corresponding to the connecting shaft 8 for inserting a transition shaft. The transition shaft is rotatably mounted in the shaft hole 102. One end of the transition shaft is connected to the connecting shaft after the limit switch 5 is pulled out via a coupling, and the other end is connected to the output shaft of the motor via a coupling, thereby connecting the motor and the rotating shaft assembly for subsequent dynamic loading tests. In this embodiment, the column of the support frame 100 has a mounting hole 101 corresponding to the shaft hole 102. A seated bearing 103 can be mounted through the mounting hole 101 corresponding to the shaft hole 102, and the transition shaft is rotatably mounted on the seated bearing 103 to support the rotation of the transition shaft.
[0027] See Figure 3 , combined Figure 4The limiter 5 includes a connecting plate 5-1, and a plug 5-2 and a key 5-3 disposed on the side of the connecting plate 5-1. A corresponding slot 4-1 is provided on the plug 5-2. The plug 5-2 and key 5-3 of the limiter 5 are inserted into the slot 4-1 and key hole 8-2 respectively to limit the rotation of the shaft assembly. A handle 5-4 is provided on the side of the connecting plate 5-1 away from the plug 5-2 and key 5-3 for easy hand gripping of the limiter 5.
[0028] In this embodiment, the cross-section of the keyhole 8-2 is a regular polygon, and the axis of the keyhole 8-2 corresponds to the rotation axis of the rotating shaft assembly. Both the keyhole 8-2 and the key body 5-3 have a regular hexahedral cross-section. After pulling out the limiter 5, rotating the rotating shaft assembly by 60° and then inserting the limiter 5 again allows the tire 300 to be rotated by a fixed angle for testing the next part. Repeatedly inserting and removing the limiter 5 and rotating the tire 300 allows testing of all six circumferential surfaces of the tire, increasing the number of data samples collected and facilitating the recording of the test surface position information. Preferably, a square or regular octahedral cross-section structure can be used.
[0029] See Figures 2 to 4 A pin hole 4-2 is provided through the insertion block 4, and the pin hole 4-2 intersects with the slot 4-1. A pin hole 5-5 is provided on the insertion block 5-2 corresponding to the pin hole 4-2. The pin hole 5-5 is opposite to the pin hole 4-2 to insert a pin 6 to prevent the limiter 5 from falling off.
[0030] See Figure 2 and Figure 3 The bearing housing assembly includes a bearing housing 2 and a bearing cover 3 detachably mounted on the bearing housing 2. Bearings 10 are mounted on both the connecting shaft 8 and the supporting shaft 9. The bearing housing 2 has an arc-shaped bottom receiving groove 2-1 corresponding to the bearing 10, and the bearing cover 3 has a top receiving groove corresponding to the bearing 10. The bearing cover 3 and the bearing housing 2 are connected by bolts to fix the bearing 10, thereby rotating and supporting the shaft assembly.
[0031] See Figure 2 , Figure 4 and Figure 5 One end of the connecting shaft 8 is provided with a connecting end shaft 8-1, the diameter of which is smaller than the diameter of the connecting shaft 8, to form a shoulder structure for the connecting shaft. The inner ring of the bearing 10 abuts against the shoulder structure of the connecting shaft. One end of the support shaft 9 is provided with a support end shaft 9-1, the diameter of which is smaller than the diameter of the connecting shaft 8, to form a shoulder structure for the support shaft. The inner ring of the bearing 10 abuts against the shoulder structure of the support shaft. This allows the axial displacement of the rotating shaft assembly to be limited after the two bearings 10 are installed and fixed.
Claims
1. A device for testing tire loading on heavy vehicles, characterized in that, It includes a rectangular support frame (100) and a support fixture (200) disposed on the bottom of the support frame (100); the support fixture (200) includes: Two symmetrical columns (1); Two sets of bearing housing assemblies are respectively installed on the two columns (1). The bearing housing assembly includes a bearing housing (2) and a bearing cover (3) detachably installed on the bearing housing (2). The rotating shaft assembly is rotatably mounted on the two bearing housing assemblies. It includes a connecting shaft (8), a flange (7), and a support shaft (9) connected concentrically in sequence. The flange (7) is connected to the tire (300). One end of the connecting shaft (8) protrudes from the column (1) and is provided with a keyhole (8-2). A mating block (4) is provided on one side of the column (1) corresponding to the connecting shaft (8). A limiter (5) is detachably installed on the mating block (4) and the keyhole (8-2) to limit the rotation of the rotating shaft assembly.
2. The heavy vehicle tire loading test apparatus according to claim 1, characterized in that, The limiter (5) includes a connecting plate (5-1), and a plug (5-2) and a key body (5-3) disposed on the side of the connecting plate (5-1). A matching slot (4-1) is provided on the matching plug (4) corresponding to the plug (5-2). The plug (5-2) and the key body (5-3) of the limiter (5) are respectively inserted into the matching slot (4-1) and the key hole (8-2) to limit the rotation of the shaft assembly.
3. The heavy vehicle tire loading test apparatus according to claim 2, characterized in that, The cross-section of the keyhole (8-2) is a regular polygon, and the axis of the keyhole (8-2) corresponds to the rotation axis of the rotating shaft assembly.
4. The heavy vehicle tire loading test apparatus according to claim 2, characterized in that, A handle (5-4) is provided on the side of the connecting plate (5-1) away from the insert (5-2) and the key body (5-3).
5. The heavy vehicle tire loading test apparatus according to claim 2, characterized in that, A pin hole (4-2) is provided through the insertion block (4), and the pin hole (4-2) intersects with the insertion slot (4-1). A pin hole (5-5) is provided on the insertion block (5-2) corresponding to the pin hole (4-2). The pin hole (5-5) is opposite to the pin hole (4-2) to insert a pin (6) to prevent the limiter (5) from falling off.
6. The heavy vehicle tire loading test apparatus according to claim 1, characterized in that, Both the connecting shaft (8) and the supporting shaft (9) are provided with bearings (10). The bearing seat (2) has an arc-shaped bottom receiving groove (2-1) corresponding to the bearing (10). The bearing cover (3) has a top receiving groove corresponding to the bearing (10). The bearing cover (3) and the bearing seat (2) are connected by bolts to fix the bearing (10) and thus rotate to support the rotating shaft assembly.
7. The heavy vehicle tire loading test apparatus according to claim 6, characterized in that, One end of the connecting shaft (8) is provided with a connecting end shaft (8-1), the diameter of the connecting end shaft (8-1) is smaller than the diameter of the connecting shaft (8) to form a shoulder structure of the connecting shaft, and the inner ring of the bearing (10) abuts against the shoulder structure of the connecting shaft; One end of the support shaft (9) is provided with a support end shaft (9-1), the diameter of the support end shaft (9-1) is smaller than the diameter of the connecting shaft (8) to form a shoulder structure of the support shaft, and the inner ring of the bearing (10) abuts against the shoulder structure of the support shaft.