Tire pressure distribution testing device

Abstract

The utility model relates to a tire pressure distribution testing device which is provided with a working platform, a rack and a testing plate body, the test plate body comprises a bearing plate, a carbon fiber plate, a thin film pressure sensor and a plurality of pressure sensors, a thin film pressure integrated circuit board and a bearing pressure integrated circuit board are further arranged at the bottom of the bearing plate, and an adjusting assembly is arranged on the working platform. The adjusting assembly comprises guide rods, guide channels, a first wheel set, a second wheel set, a connecting base, a connecting block, a first magnetic block, a hydraulic cylinder, a driving air cylinder and a first electromagnet, the bearing plate is located between the two guide rods, the guide channels are oppositely arranged, the first wheel set comprises a first roller shaft, the rack is provided with an adjusting channel, and the second wheel set comprises a second roller shaft. A plurality of positioning grooves are formed in the side edge of the adjusting channel. The device is ingenious in structure, stable and practical.

Description

Technical Field

[0001] The utility model relates to the field of tire pressure distribution testing, in particular to a tire pressure distribution testing device. Background Art

[0002] Tire ground pressure, also known as tire ground load or ground stress, refers to the pressure borne by the area where the tire contacts the ground. This pressure is determined by the weight of the vehicle and the distribution of the tires. Tire ground pressure is affected by factors such as the total weight of the vehicle, tire size, tire pressure, and vehicle design. The ideal ground pressure is evenly distributed over the entire area where the tire contacts the ground, which helps to improve the vehicle's handling and stability. If the tire ground pressure is too high, it may cause the tire to be overloaded, increasing the risk of tire blowout, and may also damage the road surface. The distribution of tire ground pressure has a direct impact on the vehicle's handling. Uneven ground pressure may cause the vehicle to be unstable when turning.

[0003] In the prior art, the relatively common testing method is to use ink rubbing. The tire to be tested is placed on a press and pressed down to rub the tire pattern on the rubbing paper. The tire wear condition is confirmed by manually comparing the tire patterns. However, this method cannot view the images and data of the tire during the pressing process in real time, and cannot separately reflect the testing situation of a certain area. In addition, the existing testing methods can only test the ground pressure of the tire. It is difficult to detect the ground pressure of the tire during the uphill process. Therefore, it is necessary to develop a device that can test the pressure of the tire at different slopes. Content of the Utility Model

[0004] The purpose of the utility model is to provide a tire pressure distribution testing device with a clever structure, which can realize the detection of the distribution and wear of the pressure, indentation and tire pattern of the tire at different slopes, and has strong applicability, convenience and practicality.

[0005] The technical solution for achieving the purpose of the present utility model is as follows: The present utility model has a working platform, a frame fixed on the working platform, and a test board body arranged on the working platform; the test board body includes a load-bearing board, a carbon fiber board fixed on the load-bearing board, a thin-film pressure sensor arranged between the carbon fiber board and the load-bearing board, and a plurality of pressure sensors arranged at the bottom of the load-bearing board. A thin-film pressure integrated circuit board electrically connected to the thin-film pressure sensor and a load-bearing pressure integrated circuit board capable of being electrically connected to each pressure sensor are further arranged at the bottom of the load-bearing board. An adjusting component for adjusting the test angle of the test board body is arranged on the working platform. The adjusting component includes guide rods oppositely arranged on the working platform, guide channels arranged on each guide rod, a first roller group and a second roller group arranged on the load-bearing board, a connecting seat fixed on the load-bearing board, a connecting block rotatably connected to the connecting seat, a first magnetic block arranged on the connecting block, a hydraulic cylinder fixed on the frame, a driving cylinder fixed on the telescopic end of the hydraulic cylinder, and a first electromagnet rotatably arranged on the telescopic end of the driving cylinder. The load-bearing board is located between the two guide rods, and the guide channels are oppositely arranged. The first roller group includes first roller shafts rotatably arranged on both sides of the load-bearing board, and each first roller shaft is located in the corresponding guide channel. Adjusting channels that are opposite and vertically arranged are arranged on the frame, and each adjusting channel communicates with the corresponding guide channel. The second roller group includes second roller shafts rotatably arranged on both sides of the load-bearing board, and each second roller shaft is located at the intersection of each guide channel and the adjusting channel. A plurality of positioning grooves that are obliquely downward and into which each second roller shaft can be inserted are arranged on the side of the adjusting channel. The test board body performs angle adjustment and positioning through the driving of the driving cylinder by the hydraulic cylinder, the driving of the first electromagnet by the driving cylinder, the electromagnetic cooperation between the first electromagnet and the first magnetic block, the cooperation between the first roller shaft and the guide channel, the cooperation between the second roller shaft and the adjusting channel, and the cooperation between the second roller shaft and the positioning groove.

[0006] Furthermore, each first roller shaft and second roller shaft are tangent to or intersect with the lower end surface of the receiving board. A plurality of second magnetic pieces are arranged on each first roller shaft in a circumferential distribution along the axis of the first roller shaft, and a plurality of second magnetic pieces are also arranged on each second roller shaft in a circumferential distribution along the axis of the second roller shaft. An upper electromagnet and a lower electromagnet are further arranged on the adjusting channel. The test board body is vertically fixed on the frame after the electromagnetic cooperation between the second magnetic pieces on the second roller shaft and the upper electromagnet, and the cooperation between the second magnetic pieces on the first roller shaft and the lower electromagnet.

[0007] Furthermore, the above-mentioned driving cylinder is not vertically arranged, and a third electromagnet is arranged in each positioning groove. After each second roller shaft is driven by the driving cylinder to be inserted into the corresponding positioning groove, the third electromagnet fixes the second roller shaft in the corresponding positioning groove through the electromagnetic cooperation with the second magnetic piece on the second roller shaft.

[0008] Further, side plates are fixedly provided at both ends of the above-mentioned load-bearing plate. Each first roller shaft and second roller shaft are rotatably arranged on the side plates. A bottom cover plate is fixedly provided at the bottom of the load-bearing plate. A protective cover plate is provided on the bottom cover plate. The thin-film pressure integrated circuit board is fixedly installed on the bottom cover plate and is located between the bottom cover plate and the protective cover plate. Protective box bodies formed by covering a fixed upper cover and a fixed lower cover are provided at the four corners of the bottom cover plate. A connection circuit board is provided in each protective box body. Each connection circuit board is electrically connected to the thin-film pressure integrated circuit board. Connection parts corresponding to each connection circuit board are provided on the thin-film pressure sensor. Through grooves corresponding to each connection part and allowing the connection parts to pass through are provided on the load-bearing plate. The thin-film pressure sensor is electrically connected to the thin-film pressure integrated circuit board after each connection part passes through the corresponding through groove and extends into the corresponding protective box body to be electrically connected to the connection circuit board.

[0009] Further, a data transmission network cable and a power supply line are provided on the above-mentioned thin-film pressure integrated circuit board.

[0010] Further, two sets of symmetrically arranged sensor groups are provided at the bottom of the above-mentioned load-bearing plate. Each sensor group includes a plurality of pressure sensors evenly distributed along the extension direction of the side plate. Each pressure sensor is electrically connected to the load-bearing pressure integrated circuit board through a guide. A pressure signal processor is also provided outside the working platform. The load-bearing pressure integrated circuit board is electrically connected to the pressure signal processor through a data line.

[0011] The utility model has positive effects: (1) By arranging an adjustment component on the working platform, arranging a guide rod, arranging a guide channel on the guide rod, arranging an adjustment channel on the frame, arranging a first roller shaft and a second roller shaft on the load-bearing plate, the first roller shaft is slidably arranged in the guide channel, the second roller shaft is arranged between the guide channel and the adjustment channel, the hydraulic cylinder drives the driving cylinder to lift, and then drives the first electromagnet and the first magnetic block to perform magnetic attraction cooperation to drive the load-bearing plate to adjust the slope. After the adjustment is completed, the driving cylinder drives the load-bearing plate to move horizontally, and then the second roller shaft is clamped into the positioning groove, thereby ensuring the stability of the load-bearing plate after the slope adjustment. Then, the pressure, indentation, and tread wear of the tires on different slopes are displayed and analyzed by the pressure of the tires against the load-bearing plate, effectively solving the problems of low efficiency and inaccuracy caused by manual detection in the prior art, greatly improving the efficiency and accuracy of tire ground pressure detection, and can be quickly and stably adjusted to different slopes according to the test needs, with a clever structure and high efficiency and convenience.

[0012] (2) By making the first roller shaft and the second roller shaft tangent to or intersect with the lower end surface of the bearing plate, the present utility model ensures that the upper electromagnet can stably cooperate with the second magnetic sheet on the second roller shaft, and the lower electromagnet can stably cooperate with the second magnetic sheet on the first roller shaft, thereby ensuring the stability of the bearing plate after rotating to the vertical state, facilitating the testing of the pressure and indentation during the impact of the tire in the vertical direction, comprehensively and efficiently testing the bearing plate, and being efficient and convenient.

[0013] (3) By arranging a third electromagnet in the positioning groove, the second roller shafts in each positioning groove are fixedly connected through the magnetic attraction cooperation of the third electromagnet and the second magnetic sheet, further ensuring the stability of the second roller shaft in the positioning groove, and being efficient and convenient.

[0014] (4) By arranging a bottom cover plate at the bottom of the bearing plate and setting the thin-film pressure integrated circuit board between the bottom cover plate and the protection cover plate, the sealing and dust-proof performance of the thin-film pressure integrated circuit board is ensured. By arranging each connection circuit board in the protection box body, the connection circuit board is comprehensively protected, and the safety of the electrical connection between the connection part on the thin-film pressure sensor and the connection circuit board is also ensured, being practical and convenient.

[0015] (5) The present utility model transmits the indentation and pressure data of the tire tested by the thin-film pressure integrated circuit board through a data transmission network cable, and is energized with an external power supply through a circuit wire, being convenient and practical.

[0016] (6) By arranging a symmetric sensor group at the bottom of the bearing plate, and evenly distributing each pressure sensor along the extension direction of the side plate, the pressure of the bearing plate can be comprehensively and accurately tested, thereby improving the accuracy of the bearing plate for pressure testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the present utility model easier to be clearly understood, the following further describes the present utility model in detail according to specific embodiments and in combination with the drawings, where

[0018] Figure 1 is the front view of the overall structure of the tire pressure distribution testing device in the present utility model;

[0019] Figure 2 is the overall structural schematic diagram of the test plate body in the present utility model;

[0020] Figure 3 is the cross-sectional view of the overall structure of the first roller shaft in the present utility model;

[0021] Figure 4 is the connection structural schematic diagram of the hydraulic cylinder and the driving cylinder on the frame in the present utility model;

[0022] Figure 5 Side sectional view of the frame and the guide rod in the present utility model;

[0023] Figure 6 is Figure 5 Enlarged view of part A in

[0024] Figure 7 Overall structural schematic diagram of the test plate body in the present utility model;

[0025] Figure 8 Exploded schematic diagram of the overall structure of the test plate body in the present utility model. Specific embodiments

[0026] See Figures 1 to 8, the utility model includes a working platform 1, a frame 2 fixed on the working platform 1, and a test board body 3 arranged on the working platform 1; the test board body 3 includes a load-bearing board 31, a carbon fiber board 32 fixed on the load-bearing board 31, a thin-film pressure sensor 34 arranged between the carbon fiber board 32 and the load-bearing board 31, and a plurality of pressure sensors 36 arranged at the bottom of the load-bearing board 31. A thin-film pressure integrated circuit board 52 electrically connected to the thin-film pressure sensor 34 and a load-bearing pressure integrated circuit board 35 electrically connectable to each pressure sensor 36 are further arranged at the bottom of the load-bearing board 31. An adjusting component 4 for adjusting the test angle of the test board body 3 is arranged on the working platform 1. The adjusting component 4 includes guide rods 41 oppositely arranged on the working platform 1, guide channels 42 arranged on each guide rod 41, a first roller group and a second roller group arranged on the load-bearing board 31, a connecting seat 45 fixed on the load-bearing board 31, a connecting block 46 rotatably connected to the connecting seat 45, a first magnetic block 47 arranged on the connecting block 46, a hydraulic cylinder 48 fixed on the frame 2, a driving cylinder 49 fixed on the telescopic end of the hydraulic cylinder 48, and a first electromagnet 40 rotatably arranged on the telescopic end of the driving cylinder 49. The load-bearing board 31 is located between the two guide rods 41, and the guide channels 42 are oppositely arranged. The first roller group includes first roller shafts 43 rotatably arranged on both sides of the load-bearing board 31, and each first roller shaft 43 is located in the corresponding guide channel 42. Adjusting channels 21 are oppositely and vertically arranged on the frame 2, and each adjusting channel 21 communicates with the corresponding guide channel 42. The second roller group includes second roller shafts 44 rotatably arranged on both sides of the load-bearing board 31, and each second roller shaft 44 is located at the intersection of each guide channel 42 and the adjusting channel 21. Positioning grooves 22 which are obliquely downward and into which each second roller shaft 44 can be inserted are arranged on the side of the adjusting channel 21. The test board body 3 is angle-adjusted and positioned through the driving of the driving cylinder 49 by the hydraulic cylinder 48, the driving of the first electromagnet 40 by the driving cylinder 49, the electromagnetic cooperation between the first electromagnet 40 and the first magnetic block 47, the cooperation between the first roller shaft 43 and the guide channel 42, the cooperation between the second roller shaft 44 and the adjusting channel 21, and the cooperation between the second roller shaft 44 and the positioning groove 22.

[0027] Each first roller shaft 43 and second roller shaft 44 are tangent to or intersect with the lower end surface of the receiving board. A plurality of second magnetic pieces 431 are arranged on each first roller shaft 43 and are circumferentially distributed along the axis of the first roller shaft 43. A plurality of second magnetic pieces 431 are also arranged on each second roller shaft 44 and are circumferentially distributed along the axis of the second roller shaft 44. An upper electromagnet 23 and a lower electromagnet 24 are further arranged on the adjusting channel 21. The test board body 3 is vertically fixed on the frame 2 after the electromagnetic cooperation between the second magnetic pieces 431 on the second roller shaft 44 and the upper electromagnet 23 and the cooperation between the second magnetic pieces 431 on the first roller shaft 43 and the lower electromagnet 24.

[0028] The driving cylinder 49 is not vertically arranged. A third electromagnet 25 is provided in each positioning groove 22. After each second roller shaft 44 is clamped into the corresponding positioning groove 22 under the drive of the driving cylinder 49, the third electromagnet 25 fixes the second roller shaft 44 in the corresponding positioning groove 22 through electromagnetic cooperation with the second magnetic sheet 431 on the second roller shaft 44.

[0029] Side plates 33 are fixedly provided at both ends of the load-bearing plate 31. Each first roller shaft 43 and second roller shaft 44 are rotatably arranged on the side plates 33. A bottom cover plate 5 is fixedly provided at the bottom of the load-bearing plate 31. A protective cover plate 51 is provided on the bottom cover plate 5. The thin-film pressure integrated circuit board 52 is fixedly installed on the bottom cover plate 5 and is located between the bottom cover plate 5 and the protective cover plate 51. Protective boxes formed by covering a fixed upper cover 54 and a fixed lower cover 55 are provided at the four corners of the bottom cover plate 5. A connection circuit board 53 is provided in each protective box. Each connection circuit board 53 is electrically connected to the thin-film pressure integrated circuit board 52. Connection parts 341 corresponding to each connection circuit board 53 are provided on the thin-film pressure sensor 34. Through grooves 311 corresponding to each connection part 341 and allowing the connection parts 341 to pass through are provided on the load-bearing plate 31. The thin-film pressure sensor 34 is electrically connected to the thin-film pressure integrated circuit board 52 after each connection part 341 passes through the corresponding through groove 311 and extends into the corresponding protective box to be electrically connected to the connection circuit board 53.

[0030] A data transmission network cable 57 and a power supply line 58 are provided on the thin-film pressure integrated circuit board 52.

[0031] Two groups of symmetrically arranged sensor groups are provided at the bottom of the load-bearing plate 31. Each sensor group includes a plurality of pressure sensors 36 evenly distributed along the extending direction of the side plates 33. Each pressure sensor 36 is electrically connected to the load-bearing pressure integrated circuit board 35 through a guide. A pressure signal processor 38 is also provided outside the working platform 1. The load-bearing pressure integrated circuit board 35 is electrically connected to the pressure signal processor 38 through a data line 37.

[0032] Working principle of the utility model: When the utility model is in use, the data transmission network cable 57 on the thin-film pressure integrated circuit board 52 is connected to an external PC terminal, and the power supply line 58 is connected to an external power supply. The load-bearing pressure integrated circuit board 35 is electrically connected to the pressure signal processor 38 through the data line 37. After the connection is completed, the hydraulic cylinder 48 drives the driving cylinder 49 to descend. After the first electromagnet 40 at the telescopic end of the driving cylinder 49 is energized, it cooperates with the first magnetic block 47 on the connecting block 46. After the hydraulic cylinder 48 drives the driving cylinder 49 to lift to the required detection height, during the lifting process of the load-bearing plate 31, each first roller 43 slides in the guiding channel 42, and each second roller 44 slides in the adjusting channel 21. Then, the driving cylinder 49 drives the load-bearing plate 31 to move left and right, so as to send the second roller 44 into the positioning groove 22, and then it is fixed through the magnetic attraction cooperation between the third electromagnet 25 and the second magnetic sheet 431 in the positioning groove 22. Then, the tire can be installed on the driving vehicle by hoisting or directly and pressed against the bearing plate. The pressure of the tire is tested by the load-bearing pressure integrated circuit board 35, and the indentation and tread pattern of the tire are tested by the thin-film pressure integrated circuit board 52. When the first roller 43 slides to the intersection of the guiding channel 42 and the adjusting channel 21, and the second roller 44 slides to the top surface of the adjusting channel 21, the test plate body 3 is vertically fixed on the frame 2 after the second magnetic sheet 431 on the second roller 44 is electromagnetically cooperated with the upper electromagnet 23 and the second magnetic sheet 431 on the first roller 43 is cooperated with the lower electromagnet 24, so as to display and analyze the pressure, indentation and tread pattern wear when the tire collides. This effectively solves the problems of low efficiency and inaccuracy caused by manual testing in the prior art. At the same time, through the drive of the hydraulic cylinder 48, the test of different slopes of the tire can also be realized. The structure is ingenious, accurate and efficient, with good adjustability and applicability, and is convenient and practical.

[0033] In the specific embodiments described above, the purpose, technical solutions and beneficial effects of the utility model are further described in detail. It should be understood that the above are only specific embodiments of the utility model and are not used to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tire pressure distribution test device, comprising a working platform, a frame fixed on the working platform, and a test board body arranged on the working platform; the test board body comprises a load-bearing plate, a carbon fiber plate fixed on the load-bearing plate, a film pressure sensor arranged between the carbon fiber plate and the load-bearing plate, and a plurality of pressure sensors arranged at the bottom of the load-bearing plate, the bottom of the load-bearing plate is also provided with a film pressure integrated circuit board electrically connected to the film pressure sensor, and a load-bearing pressure integrated circuit board electrically connected to each pressure sensor, characterized in that: The working platform is provided with an adjustment component that can adjust the test angle of the test plate body, and the adjustment component includes guide rods relatively arranged on the working platform, guide channels arranged on each guide rod, a first wheel group and a second wheel group arranged on the load-bearing plate, a connecting seat fixed on the load-bearing plate, a connecting block rotatably connected to the connecting seat, a first magnetic block arranged on the connecting block, a hydraulic cylinder fixed on the frame, a driving cylinder fixed on the telescopic end of the hydraulic cylinder, and a first electromagnet rotating on the telescopic end of the driving cylinder. The load-bearing plate is located between the two guide rods, and each guide channel is relatively arranged. The first wheel group includes a first roller shaft rotatably arranged on both sides of the load-bearing plate, and each first roller shaft is positioned at In the corresponding guide channel, the frame is provided with relative and vertically arranged adjustment channels, each adjustment channel is connected with the corresponding guide channel, the second wheel group includes second rollers rotatably arranged on both sides of the load-bearing plate, each second roller is located at the intersection of each guide channel and the adjustment channel, and the side of the adjustment channel is provided with a plurality of positioning grooves obliquely arranged downward and for each second roller to be inserted into, and the test plate body is driven by the hydraulic cylinder to drive the driving cylinder, the driving cylinder to drive the first electromagnet, the electromagnetic coordination of the first electromagnet and the first magnetic block, the coordination of the first roller with the guide channel, the coordination of the second roller with the adjustment channel, and the coordination of the second roller with the positioning groove for angle adjustment and positioning.

2. The tire pressure distribution testing device according to claim 1, characterized in that: Each first roller and second roller is tangent to or intersects with the lower end surface of the receiving plate, each first roller is provided with a plurality of second magnetic sheets distributed along the circumference of the axis of the first roller, and each second roller is also provided with a plurality of second magnetic sheets distributed along the circumference of the axis of the second roller. An upper electromagnet and a lower electromagnet are also provided on the adjustment channel, and the test plate body is vertically fixed on the frame after the second magnetic sheet on the second roller cooperates with the upper electromagnet and the second magnetic sheet on the first roller cooperates with the lower electromagnet.

3. The tire pressure distribution testing device according to claim 2, characterized in that: The driving cylinder is not vertically arranged, and a third electromagnet is provided in each positioning groove. After each second roller is driven by the driving cylinder to be inserted into the corresponding positioning groove, the third electromagnet fixes the second roller in the corresponding positioning groove through electromagnetic cooperation with the second magnetic sheet on the second roller.

4. The tire pressure distribution testing device according to claim 3, characterized in that: Side plates are fixedly provided at both ends of the load-bearing plate, and each of the first roller and the second roller is rotatably arranged on the side plates. A bottom cover is fixedly provided at the bottom of the load-bearing plate, and a protective cover is provided on the bottom cover. The thin film pressure integrated circuit board is fixedly installed on the bottom cover and is located between the bottom cover and the protective cover. A protective box body formed by covering a fixed upper cover and a fixed lower cover is provided at the four corners of the bottom cover. A connecting circuit board is provided in each of the protective box bodies, and each of the connecting circuit boards is electrically connected to the thin film pressure integrated circuit board. A connecting part corresponding to each of the connecting circuit boards is provided on the thin film pressure sensor, and a through groove corresponding to each of the connecting parts and through which the connecting part can pass is provided on the load-bearing plate. The thin film pressure sensor passes through the corresponding through groove through each of the connecting parts and extends into the corresponding protective box body to be electrically connected to the connecting circuit board, and then is electrically connected to the thin film pressure integrated circuit board.

5. The tire pressure distribution testing device according to claim 4, characterized in that: The thin film pressure integrated circuit board is provided with a data transmission network cable and a power supply cable.

6. The tire pressure distribution testing device according to claim 5, characterized in that: Two groups of symmetrically arranged sensor groups are provided at the bottom of the load-bearing plate, each sensor group includes a plurality of pressure sensors evenly distributed along the extension direction of the side plate, each pressure sensor is electrically connected to the load-bearing pressure integrated circuit board through a guide, and a pressure signal processor is also provided on the outside of the working platform, and the load-bearing pressure integrated circuit board is electrically connected to the pressure signal processor through a data line.

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