Automobile braking force detection device

Abstract

The present invention belongs to the field of automobile detection technology, and specifically is an automobile braking force detection device, comprising a detection platform, a guide platform is arranged above the detection platform, the guide platform is used to guide the automobile to be detected, a support seat is arranged inside the detection platform, and two groups of detection rollers are rotatably arranged inside the support seat; an external motor drives one group of detection rollers to rotate, and drives the other group of detection rollers to rotate through a belt. Under the rotation action of the two groups of detection rollers, they will drive the stationary wheels to be detected to rotate. When the detection rollers drive the wheels to be detected to rotate at a constant speed, the driver steps on the brake pedal in the vehicle at this time, the braking system of the wheel will prevent the detection rollers from continuing to rotate, and at the same time the wheel will apply a reaction force to the detection roller, and the reaction force is measured by an external sensor and converted into a braking force value displayed on an instrument.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile detection, in particular to an automobile braking force detection device. Background Art

[0002] An automobile's braking system is a series of specialized devices that apply a specific force to certain parts of the vehicle, thereby forcing a certain degree of braking. The braking system's functions include: slowing down or even stopping a moving vehicle at the driver's request; ensuring a stable parking position for a stopped vehicle under various road conditions; and maintaining a steady speed when traveling downhill. Vehicle braking requires testing to ensure effective braking.

[0003] The existing technology has also proposed some solutions for automobile brake detection. For example, a Chinese patent application with publication number CN219532331U discloses the field of automobile braking force detection technology, specifically an automobile braking force detection device, including a rectangular block; a detection device is embedded and installed on the top of the rectangular block, and the detection device includes a plurality of cylinders arranged in an arc shape, which are rotatably connected to a Y-shaped plate by a second protrusion. The friction between the wheel and the cylinder can be increased by a rubber ring to avoid errors during measurement, and the detachable Y-shaped plate facilitates the replacement of the rubber ring.

[0004] Although the above technical solution solves the problem that the friction between the detection device and the car tire is reduced during the detection process, which will cause errors in the braking force detected by the car, there are still other problems in the specific operation. For example, during the detection process, it is difficult to simulate the braking force of the vehicle according to different scene environments, which affects the detection accuracy.

[0005] To this end, the present invention provides a vehicle braking force detection device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the automobile braking force detection device described in the present invention includes a detection platform, a guide platform is arranged above the detection platform, the guide platform is used to guide the automobile to be detected, a support seat is arranged inside the detection platform, two groups of detection rollers are rotatably arranged inside the support seat, the detection rollers are used to place the wheels of the automobile to be detected, the ends of the two groups of detection rollers are fixedly connected to the connecting shaft, the two connecting shafts are connected by a belt, one end of one group of detection rollers is connected to the output end of the external drive motor, the interior of the two groups of detection rollers are provided with sensors, and the sensors are connected to the external detection instrument through a power cord, the outer peripheral surface of the detection roller is provided with a simulation mechanism, and the simulation mechanism is used to simulate the size of the automobile braking force in different scenarios.

[0008] Preferably, a supporting roller is rotatably connected to the interior of the support seat, and the supporting roller is located between the two groups of detection rollers, and the end of the supporting roller is connected to the end of one group of detection rollers through a second belt;

[0009] Preferably, the simulation mechanism includes a fixed ring frame installed on the outer peripheral surface of the detection roller, and a simulation ring plate is slidingly provided inside the fixed ring frame. The inner wall of the simulation ring plate is in contact with the outer peripheral surface of the detection roller, and the simulation ring plate is connected to the telescopic end of an external electric telescopic column, and the external electric telescopic column is installed at the end edge of the detection roller; when working, under normal conditions, the simulation ring plate is located at the edge of the detection roller. When it is necessary to change the braking force of the car in different scenarios, the external electric telescopic column is controlled to drive the simulation ring plate to move, so that the simulation ring plate moves to the contact position with the wheel to be detected. In this way, under the rotation of the detection roller, the wheel to be detected is driven to rotate again, and the wheel to be detected can be re-detected.

[0010] Preferably, an adjusting motor is provided inside the detection platform, and a fixed bracket is installed at the output end of the adjusting motor, and the fixed bracket is connected to the lower end surface of the support seat; when working, during the process of detecting the braking force of the vehicle, the adjusting motor can also be controlled to drive the fixed bracket to rotate, and the fixed bracket drives the support seat and the two groups of detection rollers inside the support seat to rotate, so that the angle between the two groups of detection rollers and the horizontal plane changes, so that different vehicle inclination angles can be further simulated, thereby evaluating the braking performance of the vehicle on a slope or uneven road surface, and improving the detection accuracy of the vehicle's braking force.

[0011] Preferably, the outer circumference of each group of the detection rollers is provided with a cleaning ring, and the interior of the support seat is provided with a driving unit, and the driving unit is used to drive the cleaning ring to move along the outer circumference of the detection roller and process impurities present on the surface of the detection roller, the diameter of the cleaning ring is larger than the diameter of the detection roller, and the inner wall of the cleaning ring is installed with a cleaning sleeve, and the cleaning sleeve is in contact with the outer circumference of the detection roller; during operation, after one inspection of the vehicle to be inspected is completed, the two groups of cleaning rings are respectively located at the edge of the detection roller, and then the driving unit is controlled to drive the cleaning ring to move, so that the cleaning ring and the cleaning sleeve move along the detection roller, and the cleaning sleeve can process impurities present on the surface of the detection roller, thereby improving the accuracy of subsequent detection rollers for detecting other vehicles.

[0012] Preferably, the driving unit includes a connecting seat fixedly mounted on the side wall of the supporting seat, and two groups of electric telescopic rods are installed on the surface of the connecting seat, and the telescopic ends of the two groups of electric telescopic rods are respectively connected to the sides of the two groups of cleaning rings; during operation, when the surface of the inspection roller needs to be cleaned after one inspection of the vehicle is completed, the telescopic ends of the two groups of electric telescopic rods are controlled to move by an external controller, so that the telescopic ends of the electric telescopic rods push the cleaning rings connected thereto, so that the cleaning rings will move along the axis of the inspection roller, thereby facilitating the cleaning of the inspection roller; the side wall of the cleaning ring is provided with an annular groove, and the groove wall of the annular groove is provided with a limiting groove, the telescopic end of the electric telescopic rod is connected to a connecting frame, and a circular shaft rod is installed on the surface of the connecting frame, and a limiting shaft frame is provided at the end of the circular shaft rod and located inside the annular groove.

[0013] Preferably, a spherical bracket is installed on the outer circumference of the limiting shaft bracket, and the spherical bracket is arranged inside the limiting groove. The shape of the spherical bracket is adapted to the shape of the limiting groove. A rotating unit is provided on the outer side of the cleaning ring, and the rotating unit is used to drive the cleaning ring to rotate on the outer circumference of the detection roller; during operation, when the cleaning ring moves along the surface of the detection roller and cleans its surface, under the action of the rotating unit, the rotating unit will simultaneously drive the cleaning ring to rotate, that is, the state of the cleaning ring is moving and rotating. When the cleaning ring moves and rotates, the sand and soil that are more difficult to handle on the surface of the detection roller can be removed, which facilitates the subsequent detection of the vehicle by the detection roller, and the rotation position of the cleaning ring can be limited under the mutual limitation of the spherical bracket and the limiting groove.

[0014] Preferably, the rotating unit includes a connecting tooth ring installed on the side wall of the cleaning ring, a ratchet plate is provided inside the support seat, the ratchet plate and the connecting tooth ring are meshed and connected, and the length of the ratchet plate is adapted to the length of the detection roller; an assembly groove is provided inside the cleaning ring and on the side away from the annular groove, a storage cavity is installed inside the assembly groove, cleaning liquid is stored inside the storage cavity, and a liquid outlet bag tube is provided on the side of the storage cavity close to the detection roller; during operation, when the cleaning ring moves and rotates on the outer circumference of the detection roller, the cleaning ring will simultaneously drive the storage cavity to move and rotate, and the cleaning liquid inside the storage cavity will shake irregularly, thereby applying a certain pressure to the liquid outlet bag tube, and then the cleaning liquid will flow out from the inside of the liquid outlet bag tube and flow to the outer surface of the detection roller, so as to facilitate the cleaning of grease on the surface of the detection roller.

[0015] Preferably, a barrier cavity is provided inside the storage cavity, an elastic rod is installed inside the barrier cavity, a gravity ball is installed at the end of the elastic rod, a piston plate is slidably provided inside the storage cavity, and a plurality of liquid outlet holes are opened on the surface of the liquid outlet bag tube.

[0016] Preferably, a plurality of storage cavities are provided inside the cleaning ring and are arranged in an annular array inside the cleaning ring. All storage cavities are connected by connecting hoses, and the connecting hoses are connected to the external liquid inlet pipe.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The automobile braking force detection device described in the present invention drives one set of detection rollers to rotate through an external motor, and drives the other set of detection rollers to rotate through a belt. Under the rotation of the two sets of detection rollers, they will drive the stationary wheels to be detected to rotate. When the detection rollers drive the wheels to be detected to rotate at a constant speed, the driver steps on the brake pedal in the vehicle. The braking system of the wheel will prevent the detection rollers from continuing to rotate. At the same time, the wheel will exert a reaction force on the detection rollers. The reaction force is measured by an external sensor and converted into a braking force value displayed on the instrument. With this design, the magnitude of the automobile braking force can be intuitively observed, and the braking force of the automobile at different speeds can be adjusted by adjusting the rotation speed of the detection rollers, thereby improving the detection range of the automobile braking force.

[0019] 2. In the automobile braking force detection device described in the present invention, when the cleaning ring moves and rotates on the outer circumference of the detection roller, the cleaning ring will simultaneously drive the storage chamber to move and rotate, and the cleaning liquid inside the storage chamber will shake irregularly, thereby applying a certain pressure to the liquid outlet bag tube. After that, the cleaning liquid will flow out from the inside of the liquid outlet bag tube and flow to the outer surface of the detection roller, so as to facilitate the cleaning of grease on the surface of the detection roller.

[0020] 3. The automobile braking force detection device described in the present invention is conducive to maximizing the removal of grease on the surface of the detection roller by designing multiple storage chambers. In addition, the connecting hose is connected to the external liquid inlet pipe to facilitate the introduction of cleaning liquid. When the connecting hose is not in use, the connecting hose can be closed through the closing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a perspective view of the present invention;

[0023] Figure 2 It is a partial structural diagram of the detection roller in the present invention;

[0024] Figure 3 It is a schematic structural diagram of belt 1 and belt 2 in the present invention;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the cleaning ring in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the limiting groove in the present invention;

[0027] Figure 6 It is a structural schematic diagram of the connecting gear ring in the present invention;

[0028] Figure 7 It is a structural schematic diagram of the storage cavity in the present invention;

[0029] Figure 8 Schematic diagram of the structure of the barrier cavity in the present invention;

[0030] Figure 9 It is a schematic structural diagram of the liquid discharge sac tube in the present invention;

[0031] Figure 10 It is a structural schematic diagram of the connecting hose in the present invention;

[0032] Figure 11 It is a schematic diagram of the structure of the simulated ring plate part in the present invention;

[0033] Figure 12 It is a structural schematic diagram of the fixing bracket and the regulating motor in the present invention.

[0034] In the figure: 1. Detection platform; 101. Adjustment motor; 102. Fixed bracket; 2. Guide platform; 3. Support seat; 4. Detection roller; 401. Connecting shaft; 402. Fixed ring frame; 403. Simulation ring plate; 5. Belt 1; 6. Support roller; 601. Belt 2; 7. Cleaning ring; 701. Cleaning sleeve; 8. Connecting seat; 9. Electric telescopic rod; 10. Annular groove; 11. Limiting groove; 12. Connecting frame; 13. Circular shaft rod; 14. Limiting shaft frame; 141. Spherical frame; 15. Connecting gear ring; 16. Ratchet plate; 17. Assembly groove; 18. Storage chamber; 19. Liquid outlet tube; 20. Barrier cavity; 21. Elastic rod; 22. Gravity ball; 23. Piston plate; 24. Liquid outlet hole; 25. Connecting hose. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0036] like Figures 1 to 12 As shown, an automobile braking force detection device described in an embodiment of the present invention includes a detection platform 1, a guide platform 2 is provided above the detection platform 1, and the guide platform 2 is used to guide the automobile to be detected, and a support seat 3 is provided inside the detection platform 1. Two groups of detection rollers 4 are rotatably provided inside the support seat 3, and the detection rollers 4 are used to place the wheels of the automobile to be detected. The ends of the two groups of detection rollers 4 are fixedly connected to the connecting shaft 401, and the two connecting shafts 401 are connected by a belt 5. One end of one group of detection rollers 4 is connected to the output end of the external drive motor, and the interiors of the two groups of detection rollers 4 are provided with sensors, and the sensors are connected to the external detection instrument through a power cord. The outer peripheral surface of the detection roller 4 is provided with a simulation mechanism, and the simulation mechanism is used to simulate the size of the automobile braking force in different scenarios.

[0037] During operation, the vehicle to be tested is moved along the guide platform 2 to the support base 3 above the test platform 1, and the wheel to be tested is moved between the two sets of test rollers 4, and Figure 1As shown, the vehicle is stationary at this time, and then the external motor drives one group of detection rollers 4 to rotate, and drives the other group of detection rollers 4 to rotate through belt 1 5. Under the rotation of the two groups of detection rollers 4, they will drive the stationary wheels to be detected to rotate. When the detection rollers 4 drive the wheels to be detected to rotate at a constant speed, the driver steps on the brake pedal in the vehicle. The braking system of the wheel will prevent the detection rollers 4 from continuing to rotate. At the same time, the wheel will exert a reaction force on the detection rollers 4, and the reaction force is measured by an external sensor and converted into a braking force value displayed on the instrument. With this design, the size of the car's braking force can be observed intuitively, and the braking force of the car at different speeds can be adjusted according to the rotation speed of the detection rollers 4, thereby improving the detection range of the car's braking force. In addition, a simulation mechanism is provided to simulate the size of the car's braking force in different scenarios, thereby improving the detection accuracy.

[0038] It should be noted that the magnitude of the braking force directly reflects the effectiveness of the braking system. The greater the braking force, the greater the deceleration force that the braking system can provide per unit time. It should also be noted that the two sets of detection rollers 4 rotate in the same direction, while the wheels to be detected rotate in the opposite direction.

[0039] The support base 3 is internally rotatably connected to a supporting roller 6, which is located between the two groups of detection rollers 4. The end of the supporting roller 6 is connected to the end of one group of detection rollers 4 via a belt 2 601;

[0040] During operation, when the wheel to be tested is placed between the two sets of testing rollers 4, the supporting roller 6 will be located between the two sets of testing rollers 4. Figure 3 In the indicated position, as the two sets of detection rollers 4 rotate, the supporting roller 6 will be driven to rotate through the second belt 601 at the same time. As the supporting roller 6 and the two sets of detection rollers 4 rotate, the wheel to be detected can be rotated at a constant speed, thereby improving the detection accuracy of the braking force of the wheel to be detected.

[0041] The simulation mechanism includes a fixed ring frame 402 installed on the outer peripheral surface of the detection roller 4, and a simulation ring plate 403 is slidingly provided inside the fixed ring frame 402. The inner wall of the simulation ring plate 403 contacts the outer peripheral surface of the detection roller 4, and the simulation ring plate 403 is connected to the telescopic end of the external electric telescopic column, and the external electric telescopic column is installed at the end edge of the detection roller 4; when working, under normal conditions, the simulation ring plate 403 is located at the edge of the detection roller 4. When it is necessary to change the braking force of the car in different scenarios, the external electric telescopic column is controlled to drive the simulation ring plate 403 to move, so that the simulation ring plate 403 moves to the contact position with the wheel to be detected. In this way, under the rotation of the detection roller 4, the wheel to be detected is driven to rotate again, so that the wheel to be detected can be re-detected;

[0042] It should be noted that the outer surface of the simulation ring plate 403 is provided with media with different friction properties. For example, a material with a high friction coefficient (such as rubber or special coating) can be used to simulate a dry asphalt road surface; or a material with a low friction coefficient (such as polytetrafluoroethylene coating) can be used to simulate a wet road surface.

[0043] An adjusting motor 101 is provided inside the detection platform 1, and a fixing bracket 102 is installed at the output end of the adjusting motor 101, and the fixing bracket 102 is connected to the lower end surface of the support seat 3; when working, during the process of detecting the braking force of the vehicle, the adjusting motor 101 can also be controlled to drive the fixing bracket 102 to rotate, and the fixing bracket 102 drives the support seat 3 and the two groups of detection rollers 4 inside the support seat 3 to rotate, so that the angle between the two groups of detection rollers 4 and the horizontal plane changes, so that different vehicle inclination angles can be further simulated, thereby evaluating the braking performance of the vehicle on a slope or uneven road surface, and improving the detection accuracy of the vehicle's braking force.

[0044] It should be noted that when changing the angles between the two sets of detection rollers 4 and the horizontal plane, they should be reasonably adjusted according to the specific conditions of the vehicle (such as wheel diameter, wheelbase, etc.) to ensure the accuracy and reliability of the detection results.

[0045] During long-term testing, some grease or sand will inevitably adhere to the surface of the testing roller 4, and the adhesion coefficient of the testing roller 4 will be reduced due to the presence of these things, resulting in inaccurate test results. For example, when there is oil on the roller surface, the friction between the wheel and the roller is reduced, which will make the measured braking force smaller. In severe cases, the sand layer on the roller surface will fall off, and the roller will fail, which will affect the accuracy of the test. To solve the above problems, the present invention further proposes the following embodiments:

[0046] like Figures 3 to 7 As shown, the outer circumference of each group of detection rollers 4 is provided with a cleaning ring 7, and a driving unit is provided inside the support seat 3, and the driving unit is used to drive the cleaning ring 7 to move along the outer circumference of the detection roller 4 and process the impurities on the surface of the detection roller 4. The diameter of the cleaning ring 7 is larger than the diameter of the detection roller 4, and a cleaning sleeve 701 is installed on the inner wall of the cleaning ring 7, and the cleaning sleeve 701 is in contact with the outer circumference of the detection roller 4; when working, after the vehicle to be detected is detected once, refer to the attached Figure 2 As shown, at this time, the two groups of cleaning rings 7 are respectively located at the edges of the detection roller 4. Then the driving unit is controlled to drive the cleaning rings 7 to move, so that the cleaning rings 7 and the cleaning sleeve 701 move along the detection roller 4. The cleaning sleeve 701 can process the impurities on the surface of the detection roller 4, thereby improving the accuracy of subsequent detection of the remaining vehicles by the detection roller 4.

[0047] The driving unit includes a connecting seat 8 fixedly mounted on the side wall of the support seat 3, and two groups of electric telescopic rods 9 are installed on the surface of the connecting seat 8, and the telescopic ends of the two groups of electric telescopic rods 9 are respectively connected to the sides of the two groups of cleaning rings 7; when working, when the surface of the detection roller 4 needs to be cleaned after the vehicle is inspected once, the telescopic ends of the two groups of electric telescopic rods 9 are controlled to move by an external controller, so that the telescopic ends of the electric telescopic rods 9 push the cleaning ring 7 connected to it, so that the cleaning ring 7 will move along the axis of the detection roller 4, thereby facilitating the cleaning of the detection roller 4.

[0048] The side wall of the cleaning ring 7 is provided with an annular groove 10, the groove wall of the annular groove 10 is provided with a limiting groove 11, the telescopic end of the electric telescopic rod 9 is connected to a connecting frame 12, a circular shaft 13 is installed on the surface of the connecting frame 12, and a limiting shaft frame 14 is provided at the end of the circular shaft 13 and located inside the annular groove 10; when working, refer to the attached Figure 5 As shown, the limiting shaft frame 14 is located inside the annular groove 10 and the limiting groove 11. When the telescopic end of the electric telescopic rod 9 moves, the telescopic end of the electric telescopic rod 9 will simultaneously drive the connecting frame 12 to move, and the connecting frame 12 will drive the circular shaft rod 13 and the limiting shaft frame 14 to move. The limiting shaft frame 14 is now located inside the limiting groove 11. When the electric telescopic rod 9 drives the limiting shaft frame 14 to move, it can stably drive the cleaning ring 7 to move on the axis of the detection roller 4, which is convenient for subsequent braking force detection of other vehicles.

[0049] The outer circumference of the limiting shaft frame 14 is installed with a spherical frame 141, and the spherical frame 141 is arranged inside the limiting groove 11. The shape of the spherical frame 141 is adapted to the shape of the limiting groove 11. A rotating unit is provided on the outer side of the cleaning ring 7, and the rotating unit is used to drive the cleaning ring 7 to rotate on the outer circumference of the detection roller 4; during operation, when the cleaning ring 7 moves along the surface of the detection roller 4 and cleans its surface, under the action of the rotating unit, the rotating unit will simultaneously drive the cleaning ring 7 to rotate, that is, the state of the cleaning ring 7 is to move and rotate at the same time. When the cleaning ring 7 moves and rotates, the more difficult-to-handle sand and soil on the surface of the detection roller 4 can be removed, which facilitates the subsequent detection of the vehicle by the detection roller 4, and under the mutual limitation of the spherical frame 141 and the limiting groove 11, the rotation position of the cleaning ring 7 can be limited.

[0050] The rotating unit includes a connecting toothed ring 15 mounted on the side wall of the cleaning ring 7, and a ratchet plate 16 is provided inside the support seat 3. The ratchet plate 16 is engaged with the connecting toothed ring 15, and the length of the ratchet plate 16 is adapted to the length of the detection roller 4. When the cleaning ring 7 moves during operation, the cleaning ring 7 will simultaneously drive the connecting toothed ring 15 to move. Figure 4 and Figure 6As shown, since the connecting gear ring 15 and the ratchet plate 16 are engaged and connected, the connecting gear ring 15 will rotate at a certain angle under the action of the ratchet plate 16, and the connecting gear ring 15 will drive the cleaning ring 7 to rotate, so the cleaning ring 7 will rotate during the movement, which is convenient for cleaning the sand and soil on the surface of the detection roller 4.

[0051] like Figures 4 to 10 As shown, an assembly groove 17 is provided inside the cleaning ring 7 and on a side away from the annular groove 10, and a storage chamber 18 is installed inside the assembly groove 17. The storage chamber 18 stores cleaning liquid, and a liquid outlet tube 19 is provided on the side of the storage chamber 18 close to the detection roller 4. During operation, when the cleaning ring 7 moves and rotates on the outer circumference of the detection roller 4, the cleaning ring 7 will simultaneously drive the storage chamber 18 to move and rotate, and the cleaning liquid inside the storage chamber 18 will shake irregularly, thereby applying a certain pressure to the liquid outlet tube 19, and then the cleaning liquid will flow out from the liquid outlet tube 19 and flow to the outer surface of the detection roller 4, so as to facilitate the cleaning of grease on the surface of the detection roller 4.

[0052] It should be noted that the cleaning fluid is an alkaline cleaning agent (pH 9-12) which has a strong cleaning ability for heavy grease and carbonized dirt. It can effectively decompose the grease and emulsify it, making it easier to clean.

[0053] A barrier cavity 20 is provided inside the storage cavity 18, an elastic rod 21 is installed inside the barrier cavity 20, and a gravity ball 22 is installed at the end of the elastic rod 21. A piston plate 23 is slidably provided inside the storage cavity 18, and a plurality of liquid outlet holes 24 are opened on the surface of the liquid outlet tube 19;

[0054] It should be noted that the material of the liquid outlet tube 19 is rubber. In its initial state, that is, when it is not deformed, each liquid outlet hole 24 on its surface is closed due to the elastic effect of the rubber material, and the cleaning liquid does not flow out at this time.

[0055] When the cleaning ring 7 rotates, the cleaning ring 7 will also drive the storage chamber 18 to rotate. Since an elastic rod 21 and a gravity ball 22 are provided inside the storage chamber 18, the elastic rod 21 and the gravity ball 22 will swing at an irregular amplitude, so that the gravity ball 22 is pressed on the surface of the piston plate 23, and the piston plate 23 will squeeze the cleaning liquid inside the storage chamber 18, and the cleaning liquid will squeeze out the liquid bag tube 19, thereby changing the shape of the liquid bag tube 19. Therefore, the liquid outlet 24 is not completely closed, so that the cleaning liquid will flow out from the inside of the liquid outlet 24 and flow to the surface of the detection roller 4, thereby realizing the treatment of grease on the surface of the detection roller 4.

[0056] The storage chambers 18 are provided in a plurality of manners in a circular array inside the cleaning ring 7. All the storage chambers 18 are connected by connecting hoses 25, and the connecting hoses 25 are connected to the external liquid inlet pipe. When working, refer to the attached Figure 10 As shown, multiple storage chambers 18 are designed to maximize the removal of grease on the surface of the detection roller 4, and the connecting hose 25 is connected to the external liquid inlet pipe to facilitate the introduction of the cleaning liquid. When the connecting hose 25 is not in use, the connecting hose 25 can be closed through the closing head.

[0057] It should be noted that the cleaning sleeve 701 on the inner wall of the cleaning ring 7 is sleeved on the inner wall of the cleaning ring 7, and its inner wall is provided with a buckle that is compatible with the cleaning sleeve 701. The material of the cleaning sleeve 701 is a hard sponge, which can facilitate the removal of the mixture of grease and cleaning liquid, and also facilitate the removal of sand and soil. At the same time, it can also remove impurities on the surface of the simulated ring plate 403, and the simulated ring plate 403 will not affect the movement of the cleaning ring 7.

[0058] During operation, the vehicle to be tested is moved along the guide platform 2 to the support base 3 above the test platform 1, and the wheel to be tested is moved between the two sets of test rollers 4, and Figure 1 As shown, at this time, the vehicle is stationary, and then the external motor drives one set of detection rollers 4 to rotate, and drives the other set of detection rollers 4 to rotate through belt 1 5. Under the rotation of the two sets of detection rollers 4, they will drive the stationary wheels to be detected to rotate. When the detection rollers 4 drive the wheels to be detected to rotate at a constant speed, the driver steps on the brake pedal in the vehicle, and the braking system of the wheel will prevent the detection rollers 4 from continuing to rotate. At the same time, the wheel will apply a reaction force to the detection rollers 4, and the reaction force is measured by the external sensor and converted into a braking force value displayed on the instrument; when the wheel to be detected is placed between the two sets of detection rollers 4, the supporting roller 6 will be in the position shown in Figures 2 and 3. Figure 3 The two sets of detection rollers 4 rotate, and the supporting roller 6 is driven to rotate simultaneously through the second belt 601. The rotation of the supporting roller 6 and the two sets of detection rollers 4 can make the wheel to be tested rotate at a constant speed, thereby improving the detection accuracy of the braking force of the wheel to be tested.

[0059] After the vehicle to be inspected is inspected once, refer to the attached Figure 2 As shown, at this time, the two groups of cleaning rings 7 are respectively located at the edge of the detection roller 4, and then the driving unit is controlled to drive the cleaning rings 7 to move, so that the cleaning rings 7 and the cleaning sleeves 701 move along the detection roller 4. The cleaning sleeves 701 can process the impurities on the surface of the detection roller 4, thereby improving the accuracy of the subsequent detection of the remaining vehicles by the detection roller 4; refer to the attached Figure 5As shown, the limiting shaft frame 14 is located inside the annular groove 10 and the limiting groove 11. When the telescopic end of the electric telescopic rod 9 moves, the telescopic end of the electric telescopic rod 9 will simultaneously drive the connecting frame 12 to move, and the connecting frame 12 will drive the circular shaft rod 13 and the limiting shaft frame 14 to move. The limiting shaft frame 14 is now located inside the limiting groove 11. When the electric telescopic rod 9 drives the limiting shaft frame 14 to move, it can stably drive the cleaning ring 7 to move on the axis of the detection roller 4, which is convenient for subsequent braking force detection of other vehicles; when the cleaning ring 7 moves along the surface of the detection roller 4 and cleans its surface, under the action of the rotating unit, the rotating unit will simultaneously drive the cleaning ring 7 to rotate, that is, the state of the cleaning ring 7 is moving sideways When the cleaning ring 7 moves and rotates, the sand and soil that are difficult to handle on the surface of the detection roller 4 can be removed, which is convenient for the subsequent detection of the vehicle by the detection roller 4, and the rotation position of the cleaning ring 7 can be limited by the mutual limitation of the spherical frame 141 and the limiting groove 11; when the cleaning ring 7 moves and rotates on the outer circumference of the detection roller 4, the cleaning ring 7 will simultaneously drive the storage chamber 18 to move and rotate, and the cleaning liquid inside the storage chamber 18 will shake irregularly, thereby applying a certain pressure to the liquid outlet bag tube 19, and then the cleaning liquid will flow out from the liquid outlet bag tube 19 and flow to the outer surface of the detection roller 4, which is convenient for cleaning the grease on the surface of the detection roller 4;

[0060] When the cleaning ring 7 rotates, the cleaning ring 7 will also drive the storage chamber 18 to rotate. Since an elastic rod 21 and a gravity ball 22 are provided inside the storage chamber 18, the elastic rod 21 and the gravity ball 22 will swing at an irregular amplitude, so that the gravity ball 22 is pressed on the surface of the piston plate 23, and the piston plate 23 will squeeze the cleaning liquid inside the storage chamber 18, and the cleaning liquid will squeeze out the liquid bag tube 19, thereby changing the shape of the liquid bag tube 19. Therefore, the liquid outlet 24 is not completely closed, so that the cleaning liquid will flow out from the inside of the liquid outlet 24 and flow to the surface of the detection roller 4, thereby realizing the treatment of grease on the surface of the detection roller 4.

[0061] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle braking force detection device, characterized in that: The invention comprises a detection platform (1), wherein a guide platform (2) is provided above the detection platform (1), and the guide platform (2) is used to guide the vehicle to be detected, a support seat (3) is provided inside the detection platform (1), and two groups of detection rollers (4) are rotatably provided inside the support seat (3), and the detection rollers (4) are used to place the wheels of the vehicle to be detected, and the ends of the two groups of detection rollers (4) are fixedly connected to a connecting shaft (401), and the two connecting shafts (401) are connected by a belt (5), and the end of one group of the detection rollers (4) is connected to the output end of an external drive motor, and the inside of the two groups of detection rollers (4) are provided with sensors, and the sensors are connected to an external detection instrument through a power line, and the outer peripheral surface of the detection rollers (4) is provided with a simulation mechanism, and the simulation mechanism is used to simulate the size of the vehicle braking force under different scenes; The outer circumference of each group of the detection rollers (4) is provided with a cleaning ring (7), and a driving unit is provided inside the support seat (3). The driving unit is used to drive the cleaning ring (7) to move along the outer circumference of the detection roller (4) and process impurities on the surface of the detection roller (4). The diameter of the cleaning ring (7) is larger than the diameter of the detection roller (4). A cleaning sleeve (701) is installed on the inner wall of the cleaning ring (7), and the cleaning sleeve (701) is in contact with the outer circumference of the detection roller (4); The driving unit comprises a connecting seat (8) fixedly mounted on the side wall of the supporting seat (3), two groups of electric telescopic rods (9) are mounted on the surface of the connecting seat (8), and the telescopic ends of the two groups of electric telescopic rods (9) are respectively connected to the sides of the two groups of cleaning rings (7); the side wall of the cleaning ring (7) is provided with an annular groove (10), and the groove wall of the annular groove (10) is provided with a limiting groove (11); the telescopic end of the electric telescopic rod (9) is connected to a connecting frame (12), and a circular shaft (13) is mounted on the surface of the connecting frame (12), and a limiting shaft frame (14) is provided at the end of the circular shaft (13) and located inside the annular groove (10); A spherical frame (141) is installed on the outer circumference of the limiting shaft frame (14), and the spherical frame (141) is arranged inside the limiting groove (11). The shape of the spherical frame (141) is adapted to the shape of the limiting groove (11). A rotating unit is provided on the outer side of the cleaning ring (7), and the rotating unit is used to drive the cleaning ring (7) to rotate on the outer circumference of the detection roller (4); The rotating unit comprises a connecting toothed ring (15) mounted on the side wall of the cleaning ring (7); a ratchet plate (16) is provided inside the support seat (3); the ratchet plate (16) and the connecting toothed ring (15) are meshed and connected, and the length of the ratchet plate (16) is adapted to the length of the detection roller (4); an assembly groove (17) is provided inside the cleaning ring (7) and on a side away from the annular groove (10); a storage chamber (18) is installed inside the assembly groove (17); a cleaning liquid is stored inside the storage chamber (18); and a liquid outlet tube (19) is provided on a side of the storage chamber (18) close to the detection roller (4).

2. The vehicle braking force detection device according to claim 1, characterized in that: The support base (3) is internally rotatably connected to a supporting roller (6), and the supporting roller (6) is located between two groups of detection rollers (4). The end of the supporting roller (6) is connected to the end of one group of detection rollers (4) via a second belt (601).

3. The vehicle braking force detection device according to claim 1, characterized in that: The simulation mechanism comprises a fixed ring frame (402) mounted on the outer peripheral surface of the detection roller (4); a simulation ring plate (403) is slidably provided inside the fixed ring frame (402); the inner wall of the simulation ring plate (403) contacts the outer peripheral surface of the detection roller (4); the simulation ring plate (403) is connected to the telescopic end of an externally connected electric telescopic column, and the externally connected electric telescopic column is mounted at the end edge of the detection roller (4).

4. The vehicle braking force detection device according to claim 3, characterized in that: An adjusting motor (101) is provided inside the detection platform (1), and a fixing bracket (102) is installed at the output end of the adjusting motor (101), and the fixing bracket (102) is connected to the lower end surface of the support base (3).

5. The vehicle braking force detection device according to claim 1, characterized in that: A blocking cavity (20) is provided inside the storage cavity (18), an elastic rod (21) is installed inside the blocking cavity (20), a gravity ball (22) is installed at the end of the elastic rod (21), a piston plate (23) is slidably provided inside the storage cavity (18), and a plurality of liquid outlet holes (24) are provided on the surface of the liquid outlet sac tube (19).

6. The vehicle braking force detection device according to claim 5, characterized in that: A plurality of storage cavities (18) are provided inside the cleaning ring (7) and are arranged in an annular array inside the cleaning ring (7). All storage cavities (18) are connected via a connecting hose (25), and the connecting hose (25) is connected to an external liquid inlet pipe.

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