Automobile tire resistance dynamic detection device and use method

Abstract

The invention relates to the technical field of tire resistance detection, in particular to an automobile tire resistance dynamic detection device and a use method.The automobile tire resistance dynamic detection device comprises a tire mounting table, a support, a center shaft and a roller, a detected tire is mounted on one side of the tire mounting table, the roller is mounted on one side of the tire, and the roller is fixedly connected with the center shaft through a connecting frame; the center shaft is installed at the upper end of the support, and a surface friction adjusting mechanism is installed in the roller. The surface friction force adjusting mechanism comprises an adjusting rod, a control unit is installed in the adjusting rod, the end, close to the center point of the roller, of the adjusting rod is fixedly connected with the elastic ring, a driven ring is installed in the adjusting rod, and a positioning unit is installed on the outer side of the driven ring. According to the tire resistance testing device, the driving resistance of the tire on road surfaces with different friction coefficients can be simulated, the accuracy of tire resistance testing data can be further improved, and the testing process can be realized only by rotating the button cap, so that the testing is relatively convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of tire resistance detection, and particularly to a dynamic detection device and a use method for the resistance of automobile tires. Background Art

[0002] A dynamic detection device for the resistance of automobile tires is a device used to measure the rolling resistance of automobile tires during driving. It simulates the actual driving conditions of the vehicle and real-time monitors the force conditions when the tires contact the ground, so as to accurately calculate the rolling resistance of the tires. The existing force measurement test devices mainly include two types: a drum test device and a flat belt test device. The drum test device usually includes a booster cylinder, a test tire, a force sensor, a drum, and a driving motor. The diameter of the drum is larger than the outer diameter of the test tire or smaller than the inner diameter of the test tire. During the test, the test tire is installed on the inner surface or the outer surface of the drum, and the test tire is pressed tightly on the drum through the booster cylinder. Then, the driving motor is started to drive the drum to rotate, and then the drum drives the test tire to rotate through friction. When the test tire rotates at a constant speed, the axle force measured by the force sensor installed on the axle of the test tire is read, including the rolling resistance in the horizontal direction and the normal pressure applied by the booster cylinder in the vertical direction. The ratio of the rolling resistance to the normal pressure applied by the booster cylinder can be obtained as the rolling resistance coefficient of the test tire after correction. During the process of detecting the resistance of the tire through the drum test device, if the friction of different road surfaces cannot be simulated, the resistance of the tire when driving on different road surfaces cannot be accurately measured, and during the test, there will be a problem that the test result deviates greatly from the actual situation. Therefore, a dynamic detection device and a use method for the resistance of automobile tires are proposed for the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a dynamic detection device and a use method for the resistance of automobile tires, so as to solve the problem that during the process of detecting the resistance of the tire through the drum test device, if the friction of different road surfaces cannot be simulated, the resistance of the tire when driving on different road surfaces cannot be accurately measured, and during the test, there will be a problem that the test result deviates greatly from the actual situation.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: An automobile tire resistance dynamic detection device and its usage method, comprising a tire mounting platform, a bracket, a central shaft and a roller. A tire to be detected is mounted on one side of the tire mounting platform. A roller is mounted on one side of the tire. The roller is fixedly connected to the central shaft through a connecting frame. The central shaft is mounted on the upper end of the bracket. A surface friction adjusting mechanism is mounted inside the roller. The surface friction adjusting mechanism includes an adjusting rod. A control unit is mounted inside the adjusting rod. One end of the adjusting rod close to the center point of the roller is fixedly connected to an elastic ring. A driven ring is mounted inside the adjusting rod. A positioning unit is mounted on the outer side of the driven ring. A control inclined block is fixedly connected inside the positioning unit. An adjusting unit is mounted on the outer side of one end of the control unit. The control unit includes a button cap. One end of the button cap is fixedly connected to a connecting shaft. External threads are provided on the outer side of one end of the connecting shaft. A plurality of half gears are welded and fixed on the outer side of the connecting shaft. The driven ring includes a ring plate. Tooth grooves are formed on the side of the ring plate away from the control inclined block.

[0005] As a further optimized content of the present invention, wherein: the roller includes a roller body. A plurality of perforations distributed annularly are formed inside the roller body. The adjusting rod includes a column rod. A cross hole is formed inside one end of the column rod.

[0006] As a further optimized content of the present invention, wherein: there is a one-to-one correspondence between the adjusting rod and the perforation. One end of the adjusting rod away from the center point of the roller body is arc-shaped.

[0007] As a further optimized content of the present invention, wherein: the positioning unit includes a positioning frame. A vertical hole and a horizontal hole are formed inside the positioning frame. The vertical projection of the vertical hole is square. The horizontal projection of the horizontal hole is circular.

[0008] As a further optimized content of the present invention, wherein: one end of the positioning frame is fixedly connected to the elastic ring. The other end of the positioning frame is fixedly connected to the inner wall of the roller body. The positioning frame is rotationally connected to the driven ring through the vertical hole. The positioning frame is rotationally connected to the connecting shaft through the horizontal hole.

[0009] As a further optimized content of the present invention, wherein: the adjusting unit includes an adjusting frame. A threaded hole is formed in the middle of one end of the adjusting frame. The adjusting frame is adapted to the external threads provided on the outer side of one end of the connecting shaft through the threaded hole formed inside. The vertical projection of the adjusting frame is U-shaped.

[0010] As a further optimized content of the present invention, wherein: a plurality of positioning units are provided. The positioning units are distributed annularly and equidistantly inside the roller body. A plurality of elastic rings and driven rings are provided. There is a one-to-one correspondence between the elastic ring, the driven ring and the half gear.

[0011] As a further optimized content of the present invention, wherein: there is one control unit, anti-slip grooves are annularly distributed on the outer side of the button cap, and the half gear is arranged inside a cross hole opened inside the column rod.

[0012] As a further optimized content of the present invention, wherein: the central points of the tire, the bracket and the roller are arranged in the same vertical plane.

[0013] As a further optimized content of the present invention, wherein: Step 1: Tire installation: Install the tire on one side of the tire installation table, and adjust the installation position of the tire according to the actual load degree of the tire installation. After installation, the tire is kept in close contact with the roller. Step 2: Adjust the surface friction of the roller as needed: After the tire is installed as required, control the tire to rotate through the roller installation table, and then drive the roller to rotate to detect the tire resistance. During this process, control the button cap to rotate as needed. During the rotation of the button cap, it rotates through the connecting shaft, and then drives the half gear to rotate. During the rotation, the half gear will move slightly horizontally. When the corresponding half gear contacts the tooth groove on the outer side of the corresponding ring plate, it will drive the control slant block to move through the ring plate. During the movement of the corresponding control slant block, it will push the column rod to move towards the direction close to the center point of the roller, so as to increase friction holes on the surface of the roller body. According to actual needs, by rotating the angle of the button cap, the number of friction holes on the surface of the roller body can be controlled to adjust the surface friction of the roller. Step 3: Tire resistance test: Power on the device to run. At this time, the tire drives the tire to rotate under the action of the tire installation table to realize the test of the tire resistance. Step 4: Remove the tire to complete the test: After the tire resistance test is completed, remove the tire from the tire installation table and install the next group of tires to be tested for the next round of test.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, through the provided surface friction adjustment device, during the test of the tire resistance, the resistance of the tire traveling on the road surface with different friction coefficients can be simulated, which can further improve the accuracy of the tire resistance test data, and during the test, it can be realized only by rotating the button cap, which is relatively convenient. 2. In the present invention, through the provided elastic ring, during the process of adjusting the surface friction of the roller, it can assist the column rod to reset, and at the same time has a limiting effect. And through the provided positioning unit, the elastic ring and the driven ring can be stably installed inside the roller, having good stability. 3. In the present invention, through the provided adjustment unit and control unit, during actual use, asynchronous adjustment can be achieved through the position where the semi-gear teeth are opened, and through the provided adjustment frame, the stability of the staying position of the gear can be ensured after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the roller structure of the present invention; Figure 3 is a schematic diagram of the elastic ring structure of the present invention; Figure 4 For the present invention Figure 3 is a schematic diagram of the structure at A in; Figure 5 is a schematic diagram of the adjusting rod structure of the present invention; Figure 6 is a schematic diagram of the positioning unit structure of the present invention; Figure 7 is a schematic diagram of the adjustment unit structure of the present invention; Figure 8 is a schematic diagram of the control unit structure of the present invention; Figure 9 is a schematic diagram of the driven ring structure of the present invention; Figure 10 For the present invention Figure 9 is a schematic diagram of the structure at B in.

[0016] In the figure: 1, tire mounting platform; 2, tire; 3, bracket; 4, central shaft; 5, roller; 51, roller body; 52, perforation; 6, connecting frame; 7, surface friction adjusting mechanism; 71, adjusting rod; 711, column rod; 712, cross hole; 72, elastic ring; 73, positioning unit; 731, positioning frame; 732, vertical hole; 733, horizontal hole; 74, adjustment unit; 741, adjustment frame; 742, threaded hole; 75, control unit; 751, button cap; 752, external thread; 753, connecting shaft; 754, semi-gear; 76, driven ring; 761, ring plate; 762, tooth groove; 77, control slant block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Please refer to Figures 1-10 , the present invention provides a technical solution: An automobile tire resistance dynamic detection device and its usage method, comprising a tire mounting platform 1, a bracket 3, a central shaft 4, and a roller 5. A tire 2 to be detected is mounted on one side of the tire mounting platform 1. A roller 5 is mounted on one side of the tire 2. The roller 5 is fixedly connected to the central shaft 4 through a connecting frame 6. The central shaft 4 is mounted at the upper end of the bracket 3. A surface friction adjusting mechanism 7 is mounted inside the roller 5; The surface friction adjusting mechanism 7 includes an adjusting rod 71. A control unit 75 is mounted inside the adjusting rod 71. One end of the adjusting rod 71 close to the center point of the roller 5 is fixedly connected to an elastic ring 72. A driven ring 76 is mounted inside the adjusting rod 71. A positioning unit 73 is mounted on the outer side of the driven ring 76. A control inclined block 77 is fixedly connected inside the positioning unit 73. An adjusting unit 74 is mounted on the outer side of one end of the control unit 75; The control unit 75 includes a button cap 751. One end of the button cap 751 is fixedly connected to a connecting shaft 753. An external thread 752 is provided on the outer side of one end of the connecting shaft 753. A plurality of half gears 754 are welded and fixed on the outer side of the connecting shaft 753; The driven ring 76 includes a ring plate 761. A tooth groove 762 is formed on the side of the ring plate 761 away from the control inclined block 77.

[0018] As a further technical solution of this scheme, the roller 5 includes a roller body 51. A plurality of perforations 52 distributed in a ring shape are formed on the inner side of the roller body 51. The adjusting rod 71 includes a column rod 711. A cross hole 712 is formed on the inner side of one end of the column rod 711. Through this setting, the friction force on the surface of the roller 5 can be adjusted; As a further technical solution of this scheme, there is a one-to-one correspondence between the adjusting rod 71 and the perforation 52. One end of the adjusting rod 71 away from the center point of the roller body 51 is arc-shaped. Through the above setting, the flatness of the roller surface can be ensured according to actual needs; As a further technical solution of this scheme, the positioning unit 73 includes a positioning frame 731. A vertical hole 732 and a horizontal hole 733 are formed on the inner side of the positioning frame 731. The vertical projection of the vertical hole 732 is square, and the horizontal projection of the horizontal hole 733 is circular. Through the above setting, the installation position of the elastic ring 72 can be further limited; As a further technical solution of this scheme, one end of the positioning frame 731 is fixedly connected to the elastic ring 72, and the other end of the positioning frame 731 is fixedly connected to the inner wall of the roller body 51. The positioning frame 731 is rotationally connected to the driven ring 76 through the vertical hole 732, and the positioning frame 731 is rotationally connected to the connecting shaft 753 through the horizontal hole 733. Through the above setting, the stability of the driven ring 76 during rotation can be ensured; As a further technical solution for the implementation of this solution, the adjusting unit 74 includes an adjusting frame 741. A threaded hole 742 is provided in the middle of one end of the adjusting frame 741. The adjusting frame 741 is adapted to the external thread 752 provided on the outer side of one end of the connecting shaft 753 through the threaded hole 742 provided on the inner side. The vertical projection of the adjusting frame 741 is U-shaped. Through the above settings, the control unit 75 can be stably limited; As a further technical solution for the implementation of this solution, there are multiple positioning units 73. The positioning units 73 are annularly and equidistantly distributed inside the roller body 51. There are multiple elastic rings 72 and driven rings 76. The elastic rings 72, the driven rings 76 and the half gears 754 correspond to each other one by one. Through the above settings, the elastic rings 72 and the driven rings 76 can be stably limited; As a further technical solution for the implementation of this solution, there is one control unit 75. Anti-slip grooves are annularly distributed on the outer side of the button cap 751. The half gear 754 is arranged inside the cross hole 712 provided inside the column rod 711. Through the above settings, the half gear 754 can be stably rotated by driving the button cap 751; As a further technical solution for the implementation of this solution, the central points of the tire 2, the bracket 3 and the roller 5 are arranged on the same vertical plane. Through the above settings, the stability during the resistance test of the tire 2 can be ensured; As a further technical solution for the implementation of this solution, Step 1: Installation of the tire 2: Install the tire 2 on one side of the tire installation table 1. According to the actual installation load of the tire 2, adjust the installation position of the tire 2. After installation, the tire 2 is kept in close contact with the roller 5; Step 2: Adjust the surface friction of the roller 5 as needed: After the tire 2 is installed as required, control the rotation of the tire 2 through the roller installation table 1, and then drive the roller 5 to rotate to realize the detection of the resistance of the tire 2; During this process, control the rotation of the button cap 751 as needed. During the rotation of the button cap 751, it rotates through the connecting shaft 753, and then drives the half gear 754 to rotate. During the rotation, the half gear 754 will move slightly horizontally. When the corresponding half gear 754 contacts the tooth groove 762 on the outer side of the corresponding ring plate 761, it will drive the control slant block 77 to move through the ring plate 761. During the movement of the corresponding control slant block 77, it will push the column rod 711 to move towards the center point of the roller 5, so that friction holes are added to the surface of the roller body 51. According to actual needs, by rotating the angle of the button cap 751, the number of friction holes on the surface of the roller body 51 can be controlled to realize the adjustment of the surface friction of the roller 5; Step 3: Resistance test of the tire 2: Power on the equipment to run. At this time, under the action of the tire installation table 1, the tire 2 is driven to rotate to realize the resistance test of the tire 2; Step 4: Dismantle the tire 2 and complete the test: After the resistance test of the tire 2 is completed, remove the tire 2 from the tire mounting table 1, and install the next set of tires 2 to be tested for the next round of testing.

[0019] In this article, specific examples are used to elaborate on the principles and implementation methods of the present invention. The descriptions of the above examples are only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation method of the present invention. It should be noted that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.

Claims

1. A dynamic detection device for the resistance of an automobile tire, comprising a tire mounting table (1), a bracket (3), a central shaft (4) and a roller (5), characterized in that: On one side of the tire mounting table (1), a tire (2) to be detected is mounted. On one side of the tire (2), a roller (5) is mounted. The roller (5) is fixedly connected to a central shaft (4) through a connecting frame (6). The central shaft (4) is mounted at the upper end of a bracket (3). A surface friction adjusting mechanism (7) is mounted inside the roller (5). The surface friction adjusting mechanism (7) includes an adjusting rod (71). A control unit (75) is mounted inside the adjusting rod (71). One end of the adjusting rod (71) close to the center point of the roller (5) is fixedly connected to an elastic ring (72). A driven ring (76) is mounted inside the adjusting rod (71). A positioning unit (73) is mounted on the outer side of the driven ring (76). A control inclined block (77) is fixedly connected inside the positioning unit (73). An adjusting unit (74) is mounted on the outer side of one end of the control unit (75). The control unit (75) includes a button cap (751). One end of the button cap (751) is fixedly connected to a connecting shaft (753). An external thread (752) is provided on the outer side of one end of the connecting shaft (753). A plurality of half gears (754) are welded and fixed on the outer side of the connecting shaft (753). The driven ring (76) includes a ring plate (761). A tooth groove (762) is formed on the side of the ring plate (761) away from the control inclined block (77).

2. The dynamic detection device for the resistance of an automobile tire according to claim 1, characterized in that: The roller (5) includes a roller body (51). A plurality of perforations (52) distributed in a ring shape are formed on the inner side of the roller body (51). The adjusting rod (71) includes a column rod (711). A cross hole (712) is formed on the inner side of one end of the column rod (711).

3. The dynamic detection device for the resistance of an automobile tire according to claim 2, wherein: The adjusting rods (71) and the perforations (52) correspond to each other one by one. One end of the adjusting rod (71) away from the center point of the roller body (51) is arc-shaped.

4. The dynamic detection device for the resistance of an automobile tire according to claim 1, characterized in that: The positioning unit (73) includes a positioning frame (731). A vertical hole (732) and a horizontal hole (733) are formed inside the positioning frame (731). The vertical projection of the vertical hole (732) is square. The horizontal projection of the horizontal hole (733) is circular.

5. The dynamic detection device for the resistance of an automotive tire according to claim 4, characterized in that: One end of the positioning frame (731) is fixedly connected to the elastic ring (72). The other end of the positioning frame (731) is fixedly connected to the inner wall of the roller body (51). The positioning frame (731) is rotatably connected to the driven ring (76) through the vertical hole (732). The positioning frame (731) is rotatably connected to the connecting shaft (753) through the horizontal hole (733).

6. The dynamic detection device for the resistance of an automobile tire according to claim 1, wherein: The adjusting unit (74) includes an adjusting frame (741). A threaded hole (742) is formed in the middle of one end of the adjusting frame (741). The adjusting frame (741) is adapted to the external thread (752) provided on the outer side of one end of the connecting shaft (753) through the threaded hole (742) formed inside. The vertical projection of the adjusting frame (741) is U-shaped.

7. The dynamic detection device for the resistance of an automotive tire according to claim 1, characterized in that: A plurality of the positioning units (73) are provided, and the positioning units (73) are evenly distributed in a ring shape inside the roller body (51). A plurality of elastic rings (72) and driven rings (76) are provided, and there is a one-to-one correspondence between the elastic rings (72), the driven rings (76), and the half gears (754).

8. A dynamic detection device for the resistance of an automobile tire according to claim 1, characterized in that: One control unit (75) is provided. Anti-slip grooves are annularly distributed on the outer side of the button cap (751). The half gear (754) is arranged inside a cross hole (712) formed inside the column rod (711).

9. An automobile tire resistance dynamic detection device according to claim 1, characterized in that: The centers of the tire (2), the bracket (3), and the roller (5) are located in the same vertical plane.

10. A method for using a dynamic detection device for automobile tire resistance according to any one of claims 1-9, characterized in that: Step 1: Installation of the tire (2): Install the tire (2) on one side of the tire installation table (1). Adjust the installation position of the tire (2) according to the actual load degree of the installed tire (2). After installation, the tire (2) is kept in close contact with the roller (5). Step 2: Adjust the surface friction of the roller (5) as needed: After the tire (2) is installed as required, control the rotation of the tire (2) through the roller installation table (1), thereby driving the rotation of the roller (5) to detect the resistance of the tire (2). During this process, control the rotation of the button cap (751) as needed. During the rotation of the button cap (751), it rotates through the connecting shaft (753), thereby driving the rotation of the half gear (754). During the rotation, the half gear (754) will move slightly horizontally. When the corresponding half gear (754) contacts the tooth groove (762) on the outer side of the corresponding ring plate (761), it will drive the control inclined block (77) to move through the ring plate (761). During the movement of the corresponding control inclined block (77), it will push the column rod (711) to move towards the center point of the roller (5), thereby increasing friction holes on the surface of the roller body (51). According to actual needs, by rotating the angle of the button cap (751), the number of friction holes on the surface of the roller body (51) can be controlled to adjust the surface friction of the roller (5). Step 3: Resistance test of the tire (2): Power on the device and run it. At this time, the tire (2) is driven to rotate under the action of the tire installation table (1) to test the resistance of the tire (2). Step 4: Remove the tire (2) to complete the test: After the resistance test of the tire (2) is completed, remove the tire (2) from the tire installation table (1) and install the next set of tires (2) to be tested for the next round of testing.

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