Automobile braking force detection device

Abstract

The invention belongs to the technical field of automobile detection, and particularly relates to an automobile braking force detection device which comprises a detection platform, a guide platform is arranged above the detection platform and used for guiding a to-be-detected automobile, and a supporting seat is arranged in the detection platform and used for supporting the to-be-detected automobile. Two groups of detection rollers are rotationally arranged in the supporting seat; an external motor drives one group of detection rollers to rotate and drives the other group of detection rollers to rotate through a first belt, under the rotating action of the two groups of detection rollers, the two groups of detection rollers can drive a static wheel to be detected to rotate, and when the detection rollers drive the wheel to be detected to rotate at a constant speed, a driver steps on a brake pedal in the vehicle to drive the wheel to be detected to rotate. A braking system of the wheel can prevent the detection roller from continuously rotating, meanwhile, the wheel can apply a counter-acting force to the detection roller, and the counter-acting force is measured through an external sensor and converted into a braking force numerical value to be 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] The automobile braking system refers to a series of specialized devices that apply a certain force to certain parts of the automobile, thereby forcing it to brake to a certain extent. The functions of the braking system are: to force the moving car to slow down or even stop according to the driver's requirements; to make the stopped car park stably under various road conditions; and to keep the speed of the car driving downhill stable. The braking of the car needs to be tested to ensure the braking effect.

[0003] The prior art has also proposed some solutions for automobile brake detection. For example, a Chinese patent application with publication number CN219532331U discloses the technical field of automobile braking force detection, 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 convex column. The friction between the wheel and the cylinder can be increased by a rubber ring to avoid errors in 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 as follows: An automobile braking force detection device described in the present invention includes a detection platform, above which a guiding platform is arranged. The guiding platform is used to guide the automobile to be detected. Inside the detection platform, a support seat is arranged. Inside the support seat, two groups of detection rollers are rotatably arranged. The detection rollers are used to place the wheels of the automobile to be detected. At the ends of the two groups of detection rollers, connecting shafts are fixedly connected. Between the two connecting shafts, a first belt is connected. The end of one group of detection rollers is connected to the output end of an external driving motor. Inside both groups of detection rollers, sensors are arranged, and the sensors are connected to an external detection instrument through power lines. On the outer peripheral surface of the detection rollers, a simulation mechanism is arranged. The simulation mechanism is used to simulate the magnitude of the automobile braking force under different scenarios.

[0008] Preferably, a supporting roller is rotatably connected inside the support seat. The supporting roller is located between the two groups of detection rollers. The end of the supporting roller is connected to the end of one group of detection rollers through a second belt. Preferably, the simulation mechanism includes a fixed ring frame installed on the outer peripheral surface of the detection roller. Inside the fixed ring frame, a simulation ring plate is slidably arranged. The inner wall of the simulation ring plate is in contact with the outer peripheral surface of the detection roller. The simulation ring plate is connected to the telescopic end of an external electric telescopic column. The external electric telescopic column is installed at the edge of the end of the detection roller. During operation, in the normal state, the simulation ring plate is located at the edge of the detection roller. When it is necessary to change the magnitude of the automobile braking force under different scenarios, at this time, control the external electric telescopic column to drive the simulation ring plate to move, so that the simulation ring plate moves to the position in contact 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 re-detection of the wheel to be detected can be realized.

[0009] Preferably, an adjustment motor is arranged inside the detection platform. The output end of the adjustment motor is provided with a fixed bracket, and the fixed bracket is connected to the lower end surface of the support seat. During operation, during the detection of the automobile braking force, the adjustment motor can also be controlled to drive the fixed bracket to rotate. The fixed bracket drives the support seat and the two groups of detection rollers inside the support seat to rotate, so that the included angle between the two groups of detection rollers and the horizontal plane changes. In this way, different vehicle inclination angles can be further simulated, so as to evaluate the braking performance of the vehicle on slopes or uneven roads and improve the detection accuracy of the automobile braking force.

[0010] Preferably, a cleaning ring is provided on the outer peripheral surface of each group of the detection drums. A driving unit is provided inside the support seat. The driving unit is used to drive the cleaning ring to move along the outer peripheral surface of the detection drum and process the impurities existing on the surface of the detection drum. The diameter of the cleaning ring is larger than that of the detection drum. A cleaning sleeve is installed on the inner wall of the cleaning ring, and the cleaning sleeve is in contact with the outer peripheral surface of the detection drum. During operation, after the detection of a vehicle to be detected is completed once, at this time, the two cleaning rings are respectively located at the edges of the detection drum. 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 drum. The cleaning sleeve can process the impurities existing on the surface of the detection drum, improving the accuracy of the subsequent detection of the detection drum for other vehicles.

[0011] Preferably, the driving unit includes a connecting seat fixedly installed on the side wall of the support seat. Two electric telescopic rods are installed on the surface of the connecting seat. The telescopic ends of the two electric telescopic rods are respectively connected to the sides of the two cleaning rings. During operation, when the surface of the detection drum needs to be cleaned after the detection of a vehicle is completed once, at this time, the telescopic ends of the two electric telescopic rods are controlled to move through an external controller, so that the telescopic ends of the electric telescopic rods push the cleaning rings connected to them. Thus, the cleaning rings will move along the axis of the detection drum, facilitating the cleaning of the detection drum. An annular groove is provided on the side wall of the cleaning ring, and a limiting groove is provided on the groove wall of the annular groove. The telescopic end of the electric telescopic rod is connected with a connecting frame, and a circular shaft rod is installed on the surface of the connecting frame. A limiting shaft frame is provided at the end of the circular shaft rod and located inside the annular groove.

[0012] Preferably, a spherical frame is installed on the outer peripheral surface of the limiting shaft frame. The spherical frame is arranged inside the limiting groove, and the shape of the spherical frame is adapted to the shape of the limiting groove. A rotating unit is provided outside the cleaning ring. The rotating unit is used to drive the cleaning ring to rotate on the outer peripheral surface of the detection drum. During operation, when the cleaning ring moves along the surface of the detection drum and cleans its surface, under the action of the rotating unit, the rotating unit will drive the cleaning ring to rotate at the same time, that is, the cleaning ring is in a state of moving and rotating at the same time. When the cleaning ring moves and rotates at the same time, it can remove the relatively difficult-to-process sand and soil existing on the surface of the detection drum, facilitating the subsequent detection of the detection drum for vehicles. Moreover, under the mutual limitation of the spherical frame and the limiting groove, the rotation position of the cleaning ring can be limited.

[0013] Preferably, the rotating unit includes a connecting gear ring mounted on the side wall of the cleaning ring. An internal ratchet plate is provided inside the support base. The ratchet plate and the connecting gear ring are meshed and connected. The length of the ratchet plate is adapted to the length of the detection drum. Inside the cleaning ring and on the side away from the annular groove, an assembly groove is provided. A storage cavity is installed inside the assembly groove. Cleaning liquid is stored inside the storage cavity. A liquid outlet bladder tube is provided on the side of the storage cavity close to the detection drum. During operation, when the cleaning ring moves and rotates on the outer peripheral surface of the detection drum, the cleaning ring will drive the storage cavity to move and rotate at the same time. The cleaning liquid inside the storage cavity will shake irregularly, thereby applying a certain pressure to the liquid outlet bladder tube. Then the cleaning liquid will flow out from inside the liquid outlet bladder tube and flow to the outer surface of the detection drum, facilitating the cleaning of the grease existing on the surface of the detection drum.

[0014] 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 arranged inside the storage cavity. A plurality of liquid outlet holes are formed on the surface of the liquid outlet bladder tube.

[0015] Preferably, a plurality of storage cavities are provided inside the cleaning ring and are arranged in an annular array inside the cleaning ring. All the storage cavities are connected by connecting hoses. The connecting hoses are connected to an external liquid inlet pipe.

[0016] The beneficial effects of the present invention are as follows: 1. For the automotive braking force detection device of the present invention, by driving one group of detection drums to rotate through an external motor and driving the other group of detection drums to rotate through a first belt, under the action of the rotation of the two groups of detection drums, it will drive the stationary wheel to be detected to rotate. When the detection drum drives the wheel to be detected to rotate at a constant speed, at this time, the driver steps on the brake pedal in the vehicle, and the braking system of the wheel will prevent the detection drum from continuing to rotate. At the same time, the wheel will apply a reaction force to the detection drum. This reaction force is measured by an external sensor and converted into a braking force value and displayed on the instrument. With such a design, the magnitude of the automotive braking force can be visually observed, and moreover, the braking force of the vehicle at different speeds can be adjusted by adjusting the rotation speed of the detection drum, improving the detection range of the automotive braking force.

[0017] 2. For the automotive braking force detection device of the present invention, when the cleaning ring moves and rotates on the outer peripheral surface of the detection drum, the cleaning ring will drive the storage cavity to move and rotate at the same time. The cleaning liquid inside the storage cavity will shake irregularly, thereby applying a certain pressure to the liquid outlet bladder tube. Then the cleaning liquid will flow out from inside the liquid outlet bladder tube and flow to the outer surface of the detection drum, facilitating the cleaning of the grease existing on the surface of the detection drum.

[0018] 3. The vehicle braking force detection device of the present invention is designed with multiple storage cavities, which is conducive to maximizing the removal of grease on the surface of the detection drum. Moreover, by connecting the connecting hose to the external liquid inlet pipe, it is convenient to introduce the cleaning liquid. When the connecting hose is not in use, the connecting hose can be closed by the sealing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention; Figure 2 is a partial structural schematic diagram of the detection drum in the present invention; Figure 3 is a structural schematic diagram of the first belt and the second belt in the present invention; Figure 4 is a cross-sectional structural schematic diagram of the cleaning ring in the present invention; Figure 5 is a structural schematic diagram of the limiting groove in the present invention; Figure 6 is a structural schematic diagram of the connecting gear ring in the present invention; Figure 7 is a structural schematic diagram of the storage cavity in the present invention; Figure 8 is a structural schematic diagram of the barrier cavity in the present invention; Figure 9 is a structural schematic diagram of the liquid outlet bladder tube in the present invention; Figure 10 is a structural schematic diagram of the connecting hose in the present invention; Figure 11 is a partial structural schematic diagram of the simulation ring plate in the present invention; Figure 12 is a structural schematic diagram of the fixed bracket and the adjustment motor in the present invention.

[0021] In the figure: 1, detection platform; 101, adjustment motor; 102, fixed bracket; 2, guiding platform; 3, support seat; 4, detection drum; 401, connecting shaft; 402, fixed ring frame; 403, simulation ring plate; 5, first belt; 6, supporting drum; 601, second belt; 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 cavity; 19, liquid outlet bladder tube; 20, barrier cavity; 21, elastic rod; 22, gravity ball; 23, piston plate; 24, liquid outlet hole; 25, connecting hose. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0023] As Figures 1 to 12 shown, a vehicle braking force detection device according to an embodiment of the present invention includes a detection platform 1, a guiding platform 2 is arranged above the detection platform 1, the guiding platform 2 is used to guide the vehicle to be detected, a support seat 3 is arranged inside the detection platform 1, two groups of detection rollers 4 are rotatably arranged inside the support seat 3, the detection rollers 4 are used to place the vehicle wheels to be detected, both ends of the two groups of detection rollers 4 are fixedly connected with connecting shafts 401, a first belt 5 is connected between the two connecting shafts 401, one end of one group of detection rollers 4 is connected to the output end of an external driving motor, sensors are arranged inside both groups of detection rollers 4, and the sensors are connected to an external detection instrument through power lines, and a simulation mechanism is arranged on the outer peripheral surface of the detection rollers 4, and the simulation mechanism is used to simulate the vehicle braking force magnitude under different scenarios.

[0024] During operation, the vehicle to be detected is moved along the guiding platform 2 to the support seat 3 above the detection platform 1, and the wheels to be detected are moved between the two groups of detection rollers 4, and as Figure 1 shown, at this time the vehicle is in a stationary state. 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 the first belt 5. Under the rotation action 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, at this time the driver steps on the brake pedal in the vehicle, and the braking system of the wheels will prevent the detection rollers 4 from continuing to rotate. At the same time, the wheels will exert a reaction force on the detection rollers 4, and this reaction force is measured by an external sensor and converted into a braking force value and displayed on the instrument; designed in this way, the magnitude of the vehicle braking force can be intuitively observed, and the braking force of the vehicle at different speeds can be adjusted by adjusting the rotation speed of the detection rollers 4, improving the detection range of the vehicle braking force, and a simulation mechanism is provided, which can simulate the vehicle braking force magnitude under different scenarios and improve the detection accuracy.

[0025] 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 groups of detection rollers 4 rotate in the same direction, while the wheels to be detected rotate in the opposite direction.

[0026] A supporting roller 6 is rotatably connected inside the support seat 3, the supporting roller 6 is located between the two groups of detection rollers 4, and the end of the supporting roller 6 is connected to the end of one group of detection rollers 4 through a second belt 601; During operation, when the wheel to be detected is placed between the two groups of detection rollers 4, the supporting roller 6 will be in the position shown in Figure 2 and Figure 3 as shown in the figure. Under the rotation of the two groups of detection rollers 4, the supporting roller 6 will be driven to rotate by the second belt 601 at the same time. Under the rotation of the supporting roller 6 and the two groups of detection rollers 4, the wheel to be detected can be rotated at a constant speed, improving the detection accuracy of the braking force of the wheel to be detected.

[0027] The simulation mechanism includes a fixed ring frame 402 installed on the outer peripheral surface of the detection roller 4. A simulation ring plate 403 is slidably arranged inside the fixed ring frame 402. The inner wall of the simulation ring plate 403 is in contact with 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 installed at the edge of the end of the detection roller 4. During operation, in the normal state, 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 vehicle in different scenarios, at this time, control the externally connected electric telescopic column to drive the simulation ring plate 403 to move, so that the simulation ring plate 403 moves to the position in contact 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, and the re-detection of the wheel to be detected can be realized. It should be noted that different friction performance media are provided on the outer surface of the simulation ring plate 403. For example, materials with a high coefficient of friction (such as rubber or special coatings) can be used to simulate a dry asphalt road surface; materials with a low coefficient of friction (such as polytetrafluoroethylene coating) can also be used to simulate a slippery road surface.

[0028] An adjustment motor 101 is arranged inside the detection platform 1. The output end of the adjustment motor 101 is equipped with a fixed bracket 102, and the fixed bracket 102 is connected to the lower end surface of the support seat 3. During operation, during the detection of the vehicle braking force, the adjustment motor 101 can also be controlled to drive the fixed bracket 102 to rotate. The fixed 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 included angle between the two groups of detection rollers 4 and the horizontal plane changes. In this way, the inclination angles of different vehicles can be further simulated, so as to evaluate the braking performance of the vehicle on a slope or an uneven road surface and improve the detection accuracy of the vehicle braking force.

[0029] It should be noted that when changing the included angle between the two groups of detection rollers 4 and the horizontal plane, it should be adjusted reasonably according to the specific situation of the vehicle (such as wheel diameter, wheelbase, etc.) to ensure the accuracy and reliability of the detection results.

[0030] Due to the inevitable adhesion of some grease or sand on the surface of the detection drum 4 during long-term detection, and the adhesion coefficient on the surface of the detection drum 4 will decrease due to the presence of these substances, resulting in inaccurate detection results. For example, when there is oil stain on the drum surface, the friction between the wheel and the drum decreases, which will make the measured braking force smaller. Moreover, in severe cases, it will affect the shedding of the sand layer on the drum surface, and problems such as drum failure will affect the accuracy of detection. To solve the above problems, the present invention further proposes the following embodiments: As Figures 3 to 7 shown, a cleaning ring 7 is arranged on the outer peripheral surface of each group of the detection drums 4, a driving unit is arranged inside the support base 3, and the driving unit is used to drive the cleaning ring 7 to move along the outer peripheral surface of the detection drum 4 and process the impurities existing on the surface of the detection drum 4. The diameter of the cleaning ring 7 is larger than the diameter of the detection drum 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 peripheral surface of the detection drum 4; during operation, after a vehicle to be detected is detected once, referring to the attached Figure 2 shown, at this time, the two cleaning rings 7 are respectively located at the edges of the detection drum 4, and then the driving unit is controlled to drive the cleaning ring 7 to move, so that the cleaning ring 7 and the cleaning sleeve 701 move along the detection drum 4, and the cleaning sleeve 701 can process the impurities existing on the surface of the detection drum 4, improving the accuracy of the subsequent detection of the detection drum 4 for other vehicles.

[0031] The driving unit includes a connecting seat 8 fixedly installed on the side wall of the support base 3, and two electric telescopic rods 9 are installed on the surface of the connecting seat 8. The telescopic ends of the two electric telescopic rods 9 are respectively connected to the sides of the two cleaning rings 7; during operation, when the surface of the detection drum 4 needs to be cleaned after a vehicle is detected once, at this time, the telescopic ends of the two electric telescopic rods 9 are controlled to move through an external controller, so that the telescopic ends of the electric telescopic rods 9 push the cleaning ring 7 connected thereto, and thus the cleaning ring 7 will move along the detection drum 4 on the axis, facilitating the cleaning of the detection drum 4.

[0032] An annular groove 10 is formed on the side wall of the cleaning ring 7, a limiting groove 11 is formed on the groove wall of the annular groove 10, a connecting frame 12 is connected to the telescopic end of the electric telescopic rod 9, a circular shaft rod 13 is installed on the surface of the connecting frame 12, and a limiting shaft frame 14 is arranged at the end of the circular shaft rod 13 and located inside the annular groove 10; during operation, referring to the attached Figure 5As shown, the limit shaft bracket 14 is located inside the annular groove 10 and the limit groove 11. When the telescopic end of the electric telescopic rod 9 moves, the telescopic end of the electric telescopic rod 9 will drive the connecting frame 12 to move at the same time. The connecting frame 12 will drive the circular shaft rod 13 and the limit shaft bracket 14 to move. At this time, the limit shaft bracket 14 is located inside the limit groove 11. Under the drive of the electric telescopic rod 9 to drive the limit shaft bracket 14, it can stably drive the cleaning ring 7 to move on the axis of the detection drum 4, facilitating the subsequent braking force detection of other vehicles.

[0033] A spherical bracket 141 is installed on the outer peripheral surface of the limit shaft bracket 14. The spherical bracket 141 is arranged inside the limit groove 11. The shape of the spherical bracket 141 is adapted to the shape of the limit groove 11. A rotating unit is arranged 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 peripheral surface of the detection drum 4. During operation, when the cleaning ring 7 moves along the surface of the detection drum 4 and cleans its surface, under the action of the rotating unit, the rotating unit will drive the cleaning ring 7 to rotate at the same time, that is, the state of the cleaning ring 7 is to move and rotate at the same time. Under the condition that the cleaning ring 7 moves and rotates at the same time, it can remove the relatively difficult-to-treat sand and soil existing on the surface of the detection drum 4, so as to facilitate the subsequent detection of the vehicle by the detection drum 4. And under the mutual limitation of the spherical bracket 141 and the limit groove 11, the rotation position of the cleaning ring 7 can be limited.

[0034] The rotating unit includes a connecting gear ring 15 installed on the side wall of the cleaning ring 7. A ratchet plate 16 is arranged inside the support seat 3. The ratchet plate 16 is meshed with the connecting gear ring 15. The length of the ratchet plate 16 is adapted to the length of the detection drum 4. During operation, when the cleaning ring 7 moves, the cleaning ring 7 will drive the connecting gear ring 15 to move at the same time. Refer to the attached Figure 4 and Figure 6 As shown, since the connecting gear ring 15 is meshed with the ratchet plate 16, under the action of the ratchet plate 16, the connecting gear ring 15 will rotate at a certain angle. The connecting gear ring 15 will drive the cleaning ring 7 to rotate. Therefore, the cleaning ring 7 will rotate during the movement process, so as to facilitate the cleaning of the sand and soil on the surface of the detection drum 4.

[0035] As Figures 4 to 10As shown in the figure, an assembly groove 17 is provided on the inner side of the cleaning ring 7 and away from the annular groove 10. A storage cavity 18 is installed inside the assembly groove 17. A cleaning liquid is stored inside the storage cavity 18. A liquid outlet bladder tube 19 is provided on the side of the storage cavity 18 close to the detection roller 4. During operation, when the cleaning ring 7 moves and rotates on the outer peripheral surface of the detection roller 4, the cleaning ring 7 will drive the storage cavity 18 to move and rotate at the same time. The cleaning liquid inside the storage cavity 18 will shake irregularly, thereby applying a certain pressure to the liquid outlet bladder tube 19. Then, the cleaning liquid will flow out from inside the liquid outlet bladder tube 19 and flow to the outer surface of the detection roller 4, facilitating the cleaning of the grease existing on the surface of the detection roller 4. It should be noted that the cleaning liquid is an alkaline cleaning agent (pH value 9 - 12), which has a strong cleaning ability for heavy grease and carbonized dirt, can effectively decompose the grease and emulsify it, making it easier to be cleaned off.

[0036] A barrier cavity 20 is provided inside the storage cavity 18. An elastic rod 21 is installed inside the barrier cavity 20. A gravity ball 22 is installed at the end of the elastic rod 21. A piston plate 23 is slidably arranged inside the storage cavity 18. A plurality of liquid outlet holes 24 are formed on the surface of the liquid outlet bladder tube 19. It should be noted that the material of the liquid outlet bladder tube 19 is rubber. In its initial state, that is, when it does not deform, each liquid outlet hole 24 on its surface is closed due to the elastic effect of the rubber material, and at this time the cleaning liquid does not flow out. When the cleaning ring 7 rotates, the cleaning ring 7 will drive the storage cavity 18 to rotate at the same time. Since the elastic rod 21 and the gravity ball 22 are provided inside the storage cavity 18, the elastic rod 21 and the gravity ball 22 will swing irregularly, causing the gravity ball 22 to press on the surface of the piston plate 23, and the piston plate 23 will squeeze the cleaning liquid inside the storage cavity 18, and the cleaning liquid will squeeze the liquid outlet bladder tube 19, thereby changing the shape of the liquid outlet bladder tube 19. Therefore, the liquid outlet holes 24 are not completely closed, and the cleaning liquid will flow out from inside the liquid outlet holes 24 and flow to the surface of the detection roller 4, realizing the treatment of the grease on the surface of the detection roller 4.

[0037] 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 the storage cavities 18 are connected by a connecting hose 25, and the connecting hose 25 is connected to an external liquid inlet pipe. During operation, refer to the attached Figure 10 As shown in the figure, designing a plurality of storage cavities 18 is beneficial to maximizing the removal of the grease existing on the surface of the detection roller 4. Moreover, connecting the connecting hose 25 to the external liquid inlet pipe can facilitate the introduction of the cleaning liquid. When the connecting hose 25 is not in use, the connecting hose 25 can be closed by a sealing head.

[0038] It should be noted that the cleaning sleeve 701 for cleaning 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 adapted to the cleaning sleeve 701. The cleaning sleeve 701 is made of hard sponge, so that it is convenient to remove the mixture of grease and cleaning liquid, and also convenient to remove sand and soil. At the same time, it can also remove the impurities on the surface of the simulation ring plate 403, and the simulation ring plate 403 will not affect the movement of the cleaning ring 7.

[0039] During operation, the vehicle to be detected is moved along the guiding platform 2 to the support seat 3 above the detection platform 1, and the wheel to be detected is moved between the two groups of detection rollers 4, and as Figure 1 shown, at this time the vehicle is in a stationary state. Then, an external motor drives one group of detection rollers 4 to rotate, and drives the other group of detection rollers 4 to rotate through the first belt 5. Under the action of the rotation of the two groups of detection rollers 4, they will drive the stationary wheel to be detected to rotate. When the detection rollers 4 drive the wheel to be detected to rotate at a constant speed, at this time 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 exert a reaction force on the detection rollers 4, and this reaction force is measured by an external sensor and converted into a braking force value and displayed on the instrument; when the wheel to be detected is placed between the two groups of detection rollers 4, at this time the supporting rollers 6 will be located at the positions shown in Figures 2 and Figure 3 shown. Under the rotation of the two groups of detection rollers 4, they will drive the supporting rollers 6 to rotate through the second belt 601 at the same time. Under the rotation of the supporting rollers 6 and the two groups of detection rollers 4, it can make the wheel to be detected rotate at a constant speed and improve the detection accuracy of the braking force of the wheel to be detected; After the detection of the vehicle to be detected is completed once, referring to the appendix Figure 2 shown, at this time the two cleaning rings 7 are respectively located at the edges of the detection rollers 4. Then, the control drive unit drives the cleaning rings 7 to move, so that the cleaning rings 7 and the cleaning sleeves 701 move along the detection rollers 4. The cleaning sleeves 701 can process the impurities on the surface of the detection rollers 4 and improve the accuracy of the subsequent detection of the detection rollers 4 for other vehicles; referring to the appendix Figure 5As shown, the limit shaft bracket 14 is located inside the annular groove 10 and the limit groove 11. When the telescopic end of the electric telescopic rod 9 moves, the telescopic end of the electric telescopic rod 9 will drive the connecting frame 12 to move at the same time. The connecting frame 12 will drive the circular shaft rod 13 and the limit shaft bracket 14 to move. At this time, the limit shaft bracket 14 is located inside the limit groove 11. Under the drive of the electric telescopic rod 9 to drive the limit shaft bracket 14, it can stably drive the cleaning ring 7 to move along the axis of the detection drum 4, facilitating the subsequent braking force detection of other vehicles; when the cleaning ring 7 moves along the surface of the detection drum 4 and cleans its surface, under the action of the rotating unit, the rotating unit will drive the cleaning ring 7 to rotate at the same time, that is, the state of the cleaning ring 7 is to move and rotate at the same time. Under the condition that the cleaning ring 7 moves and rotates at the same time, it can remove the relatively difficult-to-treat sand and soil existing on the surface of the detection drum 4, so as to facilitate the subsequent detection of the vehicle by the detection drum 4. And under the mutual limitation of the spherical bracket 141 and the limit groove 11, the rotation position of the cleaning ring 7 can be limited; when the cleaning ring 7 moves and rotates on the outer peripheral surface of the detection drum 4, the cleaning ring 7 will drive the storage cavity 18 to move and rotate at the same time. The cleaning liquid inside the storage cavity 18 will shake irregularly, thereby giving a certain pressure to the liquid outlet bladder tube 19. Then the cleaning liquid will flow out from the inside of the liquid outlet bladder tube 19 and flow to the outer surface of the detection drum 4, facilitating the cleaning of the grease existing on the surface of the detection drum 4; When the cleaning ring 7 rotates, the cleaning ring 7 will drive the storage cavity 18 to rotate at the same time. Since the elastic rod 21 and the gravity ball 22 are arranged inside the storage cavity 18, the elastic rod 21 and the gravity ball 22 will swing irregularly, causing the gravity ball 22 to press on the surface of the piston plate 23, and the piston plate 23 will squeeze the cleaning liquid inside the storage cavity 18, and the cleaning liquid will squeeze the liquid outlet bladder tube 19, so that the shape of the liquid outlet bladder tube 19 changes. Therefore, the liquid outlet hole 24 is not completely closed, and the cleaning liquid will flow out from the inside of the liquid outlet hole 24 and flow to the surface of the detection drum 4, realizing the treatment of the grease on the surface of the detection drum 4.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile braking force detection device, characterized in that: It includes a detection platform (1), above which there is a guiding platform (2) for guiding the vehicle to be detected. Inside the detection platform (1), there is a support seat (3). Inside the support seat (3), two groups of detection rollers (4) are rotatably arranged for placing the wheels of the vehicle to be detected. At the ends of the two groups of detection rollers (4), connecting shafts (401) are fixedly connected, and the two connecting shafts (401) are connected by a first belt (5). The end of one group of detection rollers (4) is connected to the output end of an external driving motor. Sensors are arranged inside both groups of detection rollers (4), and the sensors are connected to an external detection instrument through power lines. A simulation mechanism is arranged on the outer peripheral surface of the detection roller (4) for simulating the braking force of the vehicle under different scenarios.

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

3. The automotive braking force detection device according to claim 1, characterized in that: The simulation mechanism includes a fixed ring frame (402) installed on the outer peripheral surface of the detection roller (4). Inside the fixed ring frame (402), a simulation ring plate (403) is slidably arranged. 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 external electric telescopic column, and the external electric telescopic column is installed at the edge of the end of the detection roller (4).

4. An automobile braking force detection device according to claim 3, characterized in that: Inside the detection platform (1), an adjustment motor (101) is arranged. The output end of the adjustment motor (101) is equipped with a fixed bracket (102), and the fixed bracket (102) is connected to the lower end surface of the support seat (3).

5. An automobile braking force detection device according to claim 1, characterized in that: On the outer peripheral surface of each group of detection rollers (4), a cleaning ring (7) is arranged. Inside the support seat (3), a driving unit is arranged for driving the cleaning ring (7) to move along the outer peripheral surface of the detection roller (4) to handle the impurities on the surface of the detection roller (4). The diameter of the cleaning ring (7) is larger than that 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) contacts the outer peripheral surface of the detection roller (4).

6. The vehicle braking force detection device according to claim 5, characterized in that: The driving unit includes a connecting seat (8) fixedly installed on the side wall of the support seat (3). Two electric telescopic rods (9) are installed on the surface of the connecting seat (8). The telescopic ends of the two electric telescopic rods (9) are respectively connected to the sides of the two cleaning rings (7). An annular groove (10) is formed in the side wall of the cleaning ring (7), and a limiting groove (11) is formed in the groove wall of the annular groove (10). The telescopic end of the electric telescopic rod (9) is connected with a connecting frame (12). A circular shaft rod (13) is installed on the surface of the connecting frame (12). A limiting shaft frame (14) is arranged at the end of the circular shaft rod (13) and inside the annular groove (10).

7. An automobile braking force detection device according to claim 6, characterized in that: A spherical frame (141) is installed on the outer peripheral surface of the limiting shaft frame (14). 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 arranged outside the cleaning ring (7), and the rotating unit is used to drive the cleaning ring (7) to rotate on the outer peripheral surface of the detection drum (4).

8. An automobile braking force detection device according to claim 7, characterized in that: The rotating unit includes a connecting gear ring (15) installed on the side wall of the cleaning ring (7). A ratchet plate (16) is arranged inside the support seat (3). The ratchet plate (16) is meshed and connected with the connecting gear ring (15). The length of the ratchet plate (16) is adapted to the length of the detection drum (4). An assembly groove (17) is arranged inside the cleaning ring (7) and on the side far from the annular groove (10). A storage cavity (18) is installed inside the assembly groove (17). A cleaning liquid is stored inside the storage cavity (18). A liquid outlet bladder tube (19) is arranged on the side of the storage cavity (18) close to the detection drum (4).

9. The vehicle braking force detection device according to claim 8, characterized in that: A barrier cavity (20) is arranged inside the storage cavity (18). An elastic rod (21) is installed inside the barrier cavity (20). A gravity ball (22) is installed at the end of the elastic rod (21). A piston plate (23) is slidably arranged inside the storage cavity (18). A plurality of liquid outlet holes (24) are formed in the surface of the liquid outlet bladder tube (19).

10. An automobile braking force detection device according to claim 9, characterized in that: A plurality of storage cavities (18) are arranged inside the cleaning ring (7) and are arranged in an annular array inside the cleaning ring (7). All the storage cavities (18) are connected through a connecting hose (25), and the connecting hose (25) is connected with an external liquid inlet pipe.

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