Vehicle loading brake table

Abstract

The utility model discloses a vehicle loading brake table, which relates to the technical field of vehicle detection equipment and comprises a support frame. The bracket is connected to the supporting frame in a vertical sliding manner; the roller driving assembly is arranged on the support, and the roller driving assembly is used for abutting against two front wheels or two rear wheels of the vehicle and driving the two front wheels or the two rear wheels of the vehicle to rotate; the torque detection assembly is arranged on the support, and the torque detection assembly is used for detecting the torque change of the roller driving assembly; the processor is electrically connected with the torque detection assembly, and the processor is used for calculating braking performance parameters of the vehicle; and the lifting driving assembly is arranged on the supporting frame, and the lifting driving assembly can drive the support and the roller driving assembly to ascend. The vehicle loading brake table can simulate the load bearing condition of a vehicle in actual driving and measure the brake performance parameters of the vehicle under the load condition.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle detection equipment, in particular to a vehicle loading brake platform. Background Art

[0002] The vehicle brake bench is a device used to test and evaluate the braking performance of a vehicle. This device is usually used to measure the braking performance parameters of the vehicle's braking system, such as the braking force and brake balance. The vehicle brake bench can ensure that the vehicle's braking system meets safety standards and provide important information about the vehicle's braking performance. The vehicle brake bench includes an active roller, a torque detection device and a processor. After the active roller drives the vehicle's wheels to rotate at high speed, the vehicle brakes. The torque detection device can detect the torque change of the active roller, and then the processor can calculate the vehicle's braking performance parameters based on the torque change of the active roller.

[0003] When driving on real roads, vehicles usually carry various loads, such as passengers and cargo. The pressure between the loaded vehicle and the driving surface increases, and these loads will have a significant impact on the braking performance of the vehicle. A larger load means more braking force is required to slow down or stop the vehicle. In the prior art, the vehicle brake bench cannot simulate the load situation of the vehicle in actual driving, and thus the vehicle brake bench cannot measure the braking performance parameters of the vehicle under load. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a vehicle loading brake stand, which can simulate the load situation of the vehicle in actual driving and measure the braking performance parameters of the vehicle under load.

[0005] The vehicle loading brake stand according to the embodiment of the utility model comprises:

[0006] Support frame;

[0007] A bracket, the bracket is connected to the support frame so as to be able to slide up and down;

[0008] A roller drive assembly, the roller drive assembly is arranged on the bracket, the roller drive assembly is used to abut against the two front wheels or the two rear wheels of the vehicle and drive the two front wheels or the two rear wheels of the vehicle to rotate;

[0009] A torque detection component, the torque detection component is arranged on the bracket, and the torque detection component is used to detect the torque change of the roller drive component;

[0010] a processor, the processor being electrically connected to the torque detection component, and the processor being used to calculate a braking performance parameter of the vehicle;

[0011] A lifting drive assembly is disposed on the support frame, wherein an output end of the lifting drive assembly is connected to the bracket, and the lifting drive assembly can drive the bracket and the roller drive assembly to rise, so as to increase the pressure between the two front wheels or the two rear wheels of the vehicle and the roller drive assembly.

[0012] At least the following beneficial effects are achieved:

[0013] When the braking performance of the front wheels of the vehicle needs to be detected, the vehicle is driven onto the vehicle loading brake platform so that the two front wheels of the vehicle are in contact with the roller drive assembly. Then the lifting drive assembly is started, and the lifting drive assembly drives the bracket and the roller drive assembly on the bracket to rise, so that the roller drive assembly drives the two front wheels of the vehicle to rise, and then the vehicle is in a tilted state. At this time, the pressure between the two front wheels of the vehicle and the roller drive assembly gradually increases with the rise of the roller drive assembly, which can simulate the situation that the vehicle is under load. Then, the roller drive assembly stops rising, the roller drive assembly is started, and the roller drive assembly drives the two front wheels of the vehicle to rotate. After the two front wheels of the vehicle rotate stably, the vehicle starts the braking system, so that the two front wheels of the vehicle start to brake and reduce the speed. Since the two wheels of the vehicle are in contact with the roller drive assembly, the roller drive assembly is subjected to the resistance of the two front wheels of the vehicle, so that the roller drive assembly produces a torque change. The torque detection assembly can detect the torque change of the roller drive assembly, and the processor can calculate the braking performance of the two front wheels of the vehicle according to the torque change of the roller drive assembly. After the two front wheels of the vehicle are detected, the vehicle continues to move forward, so that the two front wheels of the vehicle are separated from the contact with the roller drive assembly, and the two rear wheels of the vehicle are contacted with the roller drive assembly. Then the lifting drive assembly drives the bracket and the roller drive assembly on the bracket to rise, so that the vehicle is in a tilted state. At this time, the pressure between the two rear wheels of the vehicle and the roller drive assembly increases, which can simulate the situation that the vehicle is under load. Similarly, after the roller drive assembly drives the two rear wheels of the vehicle to rotate stably, the vehicle starts the braking system, and the torque detection assembly can detect the torque change of the roller drive assembly. The processor can calculate the braking performance of the two rear wheels of the vehicle according to the torque change of the roller drive assembly. The vehicle loading brake platform can drive the two front wheels or the two rear wheels of the vehicle to rise, so that the vehicle is in a tilted state, increasing the pressure between the two front wheels or the two rear wheels of the vehicle and the roller drive assembly, thereby simulating the situation that the vehicle is under load in actual driving, so that the vehicle loading brake platform can measure the braking performance parameters of the vehicle under load.

[0014] According to the vehicle loading brake platform of the embodiment of the utility model, the roller driving assembly includes a first active roller, a first driven roller, a second active roller, a second driven roller, a first motor and a second motor, the left and right ends of the first active roller, the first driven roller, the second active roller and the second driven roller are rotatably connected to the bracket, the axis of the first active roller coincides with the axis of the second active roller, the axis of the first driven roller coincides with the axis of the second driven roller, the first active roller is arranged in front of the first driven roller, and the outer walls of the first active roller and the first driven roller are opposite to each other Both are used to abut against one of the front wheels or rear wheels of the vehicle, the first motor is arranged on the bracket, the first motor is used to drive the first active roller and the first driven roller to rotate, so as to rotate one of the front wheels or rear wheels of the vehicle, the second active roller is arranged in front of the second driven roller, the opposite outer walls of the second active roller and the second driven roller are used to abut against the other front wheel or rear wheel of the vehicle, the second motor is arranged on the bracket, the second motor is used to drive the second active roller and the second driven roller to rotate, so as to rotate the other front wheel or rear wheel of the vehicle.

[0015] According to the vehicle loading brake platform of the embodiment of the utility model, anti-skid structures are provided on the outer walls of the first active roller, the first driven roller, the second active roller and the second driven roller.

[0016] According to the vehicle loading brake platform of the embodiment of the utility model, the anti-skid structure is a plastic particle layer.

[0017] According to the vehicle loading brake platform of the embodiment of the utility model, it also includes a first in-place detection component, a second in-place detection component and a controller, the controller is used to control the start and stop of the first motor, the second motor and the lifting drive component, the first in-place detection component is arranged between the first active roller and the first driven roller, the second in-place detection component is arranged between the second active roller and the second driven roller, the first in-place detection component is used to detect one of the front wheels or rear wheels of the vehicle arranged between the first active roller and the first driven roller, the second in-place detection component is used to detect the other front wheel or rear wheel of the vehicle arranged between the second active roller and the second driven roller, the first in-place detection component and the second in-place detection component are both electrically connected to the controller, so that when the first in-place detection component and the second in-place detection component simultaneously detect the front wheel or rear wheel of the vehicle, the controller can control the first motor, the second motor and the lifting drive component to start.

[0018] According to the vehicle loading brake platform of the embodiment of the utility model, the first in-position detection component includes a first micro-touch switch, a first rotating rod, two first swing arms and two first elastic members, the first micro-touch switch is arranged on the bracket, the first micro-touch switch is electrically connected to the controller, one end of the two first swing arms can be rotatably connected to the bracket, the left and right ends of the first rotating rod are respectively rotatably connected to the other end of the two first swing arms, one end of the two first elastic members is respectively connected to one end of the two first swing arms, and the other ends of the two first elastic members are both connected to the bracket, the first rotating rod is used to abut against one of the front wheels or rear wheels of the vehicle arranged between the first active roller and the first driven roller, so that the other ends of the two first swing arms can both swing downward, and one of the first swing arms abuts against the first micro-touch switch, and the two first elastic members are respectively used to pull one end of the two first swing arms, so that the other ends of the two first swing arms can both swing upward.

[0019] According to the vehicle loading brake platform of the embodiment of the utility model, it also includes a first speed detection component and a second speed detection component, the second in-place detection component includes a second micro-touch switch, a second rotating rod, two second swing arms and two second elastic members, the first speed detection component is electrically connected to the processor, the first speed detection component is used to detect the rotational speed of the first rotating rod, the second speed detection component is electrically connected to the processor, and the second speed detection component is used to detect the rotational speed of the second rotating rod.

[0020] According to the vehicle loading brake platform of an embodiment of the utility model, the first speed detection component includes a first infrared sensor and a first gear, the first infrared sensor is arranged on one of the first swing arms, the first gear is arranged at one end of the first rotating rod, and the first infrared sensor is used to detect the rotation frequency of the first gear.

[0021] According to the vehicle loading brake platform of the embodiment of the utility model, the lifting drive assembly includes two hydraulic cylinders, the cylinder bodies of the two hydraulic cylinders are respectively arranged on the left and right ends of the support frame, and the piston rods of the two hydraulic cylinders are connected to the bracket.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a structural schematic diagram of a vehicle loading brake platform according to an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the bracket and roller drive assembly in the vehicle loading brake platform according to the embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of a first active roller, a first driven roller, a first in-position detection assembly and a first speed detection assembly in a vehicle loading brake platform according to an embodiment of the utility model;

[0027] Figure 4 for Figure 3 The structural diagram at A in the middle;

[0028] Reference numerals:

[0029] Support frame 100; bracket 110; torque detection component 120; lifting drive component 130;

[0030] Roller drive assembly 200; first active roller 210; first driven roller 220; second active roller 230; second driven roller 240; first motor 250; second motor 260;

[0031] A first in-place detection assembly 300; a first rotating rod 310; a first swing arm 320; a first elastic member 330; a second in-place detection assembly 400;

[0032] A first speed detection component 500 ; a first infrared sensor 510 ; a first gear 520 ; and a second speed detection component 600 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0038] refer to Figure 1 and Figure 2 The vehicle loading brake platform of the utility model comprises:

[0039] Support frame 100;

[0040] A bracket 110, the bracket 110 is connected to the support frame 100 so as to be able to slide up and down;

[0041] A roller drive assembly 200, which is disposed on the bracket 110, and is used to abut against two front wheels or two rear wheels of the vehicle and drive the two front wheels or two rear wheels of the vehicle to rotate;

[0042] A torque detection assembly 120, which is disposed on the bracket 110 and is used to detect torque changes of the roller drive assembly 200;

[0043] The lifting drive assembly 130 is arranged on the support frame 100. The output end of the lifting drive assembly 130 is connected to the bracket 110. The lifting drive assembly 130 can drive the bracket 110 and the roller drive assembly 200 to rise, so as to increase the pressure between the two front wheels or the two rear wheels of the vehicle and the roller drive assembly 200.

[0044] It is understandable that when the braking performance of the front wheels of the vehicle needs to be tested, the vehicle is driven onto the vehicle loading brake platform so that the two front wheels of the vehicle abut against the roller drive assembly 200. Then the lifting drive assembly 130 is started, and the lifting drive assembly 130 drives the bracket 110 and the roller drive assembly 200 on the bracket 110 to rise, so that the roller drive assembly 200 drives the two front wheels of the vehicle to rise, and then the vehicle is in a tilted state. At this time, the pressure between the two front wheels of the vehicle and the roller drive assembly 200 gradually increases as the roller drive assembly 200 rises, which can simulate the situation that the vehicle is under load. Next, the roller drive assembly 200 stops rising, the roller drive assembly 200 is started, and the roller drive assembly 200 drives the two front wheels of the vehicle to rotate. After the two front wheels of the vehicle rotate stably, the vehicle starts the braking system, so that the two front wheels of the vehicle start to brake and reduce the speed. Since the two wheels of the vehicle are in contact with the roller drive assembly 200, the roller drive assembly 200 is subjected to the resistance of the two front wheels of the vehicle, so that the roller drive assembly 200 produces a torque change. The torque detection assembly 120 can detect the torque change of the roller drive assembly 200, and the processor can calculate the braking performance of the two front wheels of the vehicle according to the torque change of the roller drive assembly 200. After the two front wheels of the vehicle are detected, the vehicle continues to move forward, so that the two front wheels of the vehicle are separated from the contact with the roller drive assembly 200, and the two rear wheels of the vehicle are in contact with the roller drive assembly 200. Then the lifting drive assembly 130 drives the bracket 110 and the roller drive assembly 200 on the bracket 110 to rise, so that the vehicle is in a tilted state. At this time, the pressure between the two rear wheels of the vehicle and the roller drive assembly 200 increases, which can simulate the situation that the vehicle is under load. Similarly, after the roller drive assembly 200 drives the two rear wheels of the vehicle to rotate stably, the vehicle starts the braking system, and the torque detection assembly 120 can detect the torque change of the roller drive assembly 200. The processor can calculate the braking performance of the two rear wheels of the vehicle according to the torque change of the roller drive assembly 200. The vehicle loading brake platform can drive the two front wheels or the two rear wheels of the vehicle to rise, so that the vehicle is in a tilted state, increasing the pressure between the two front wheels or the two rear wheels of the vehicle and the roller drive assembly 200, thereby simulating the load situation of the vehicle in actual driving, so that the vehicle loading brake platform can measure the braking performance parameters of the vehicle under load.

[0045] It should be explained that when driving on a real road, the wheels of the vehicle abut against the ground, and the two front wheels and two rear wheels of the vehicle roll on the ground. When the vehicle is in a loaded state, the pressure between the two front wheels and two rear wheels of the vehicle and the ground will increase. In the present utility model, the roller drive assembly 200 abuts against the two front wheels or two rear wheels of the vehicle, and the roller drive assembly 200 is equivalent to the ground. The roller drive assembly 200 drives the two front wheels or two rear wheels of the vehicle to rotate, which is equivalent to the two front wheels or two rear wheels of the vehicle rolling on the ground. When the roller drive assembly 200 rises and drives the two front wheels or two rear wheels of the vehicle to rise, the vehicle is in a tilted state, so that the pressure between the two front wheels or two rear wheels of the vehicle and the roller drive assembly 200 increases, which can simulate the state of the vehicle being loaded, and can measure the braking performance parameters of the vehicle under load. In the present utility model, the braking performance parameters of the vehicle are the braking performance parameters of the two front wheels of the vehicle and the braking performance parameters of the two rear wheels.

[0046] refer to Figure 2 and Figure 3The roller driving assembly 200 includes a first active roller 210, a first driven roller 220, a second active roller 230, a second driven roller 240, a first motor 250 and a second motor 260. The left and right ends of the first active roller 210, the first driven roller 220, the second active roller 230 and the second driven roller 240 are rotatably connected to the bracket 110. The axes of the first active roller 210 and the second active roller 230 coincide with each other, and the axes of the first driven roller 220 and the second driven roller 240 coincide with each other. The first active roller 210 is arranged in front of the first driven roller 220. The first active roller 210 and the first driven roller 220 are mutually connected. The outer walls of the pairs are used to abut against one of the front wheels or rear wheels of the vehicle. The first motor 250 is arranged on the bracket 110. The first motor 250 is used to drive the first active roller 210 and the first driven roller 220 to rotate so that one of the front wheels or rear wheels of the vehicle rotates. The second active roller 230 is arranged in front of the second driven roller 240. The opposite outer walls of the second active roller 230 and the second driven roller 240 are used to abut against the other front wheel or rear wheel of the vehicle. The second motor 260 is arranged on the bracket 110. The second motor 260 is used to drive the second active roller 230 and the second driven roller 240 to rotate so that the other front wheel or rear wheel of the vehicle rotates. It can be understood that the opposite outer walls of the first active roller 210 and the first driven roller 220 can be in contact with one of the front wheels or rear wheels of the vehicle, so that one of the front wheels or rear wheels of the vehicle is disposed between the first active roller 210 and the first driven roller 220; the opposite outer walls of the second active roller 230 and the second driven roller 240 can be in contact with the other front wheel or rear wheel of the vehicle, so that the other front wheel or rear wheel of the vehicle is disposed between the second active roller 230 and the second driven roller 240. The first motor 250 drives the first active roller 210 and the first driven roller 220 to rotate, so that the first active roller 210 and the first driven roller 220 drive one of the front wheels or rear wheels of the vehicle to rotate; the second motor 260 drives the second active roller 230 and the second driven roller 240 to rotate, so that the second active roller 230 and the second driven roller 240 drive the other front wheel or rear wheel of the vehicle to rotate.

[0047] In the present invention, an anti-skid structure is provided on the outer wall of the first active roller 210, the first driven roller 220, the second active roller 230 and the second driven roller 240. It can be understood that the first active roller 210, the first driven roller 220, the second active roller 230 and the second driven roller 240 are all in contact with the front wheel or the rear wheel of the vehicle through the anti-skid structure, which effectively avoids the first active roller 210, the first driven roller 220, the second active roller 230 and the second driven roller 240 from slipping with the front wheel or the rear wheel of the vehicle, which is conducive to improving the measurement accuracy of the vehicle loading brake stand.

[0048] As an embodiment of the utility model, the anti-skid structure is a plastic particle layer. It is understandable that, on the one hand, the plastic particle layer has good friction performance and can provide a reliable anti-skid effect, ensuring that the front wheel or rear wheel of the vehicle can firmly adhere to the plastic particle layer on the first active roller 210, the first driven roller 220, the second active roller 230 and the second driven roller 240 during the test, thereby preventing the front wheel or rear wheel of the vehicle from slipping; on the other hand, the plastic particle layer can provide a soft surface, which helps to slow down the relative movement between the front wheel or rear wheel of the vehicle and the first active roller 210, the first driven roller 220, the second active roller 230 and the second driven roller 240, thereby reducing the impact caused by the vehicle during the test and simulating a more realistic vehicle driving condition.

[0049] refer to Figure 3 and Figure 4The vehicle loading brake station also includes a first in-place detection component 300, a second in-place detection component 400 and a controller, the controller is used to control the start and stop of the first motor 250, the second motor 260 and the lifting drive component 130, the first in-place detection component 300 is arranged between the first active roller 210 and the first driven roller 220, the second in-place detection component 400 is arranged between the second active roller 230 and the second driven roller 240, the first in-place detection component 300 is used to detect one of the front wheels or rear wheels of the vehicle arranged between the first active roller 210 and the first driven roller 220, the second in-place detection component 400 is used to detect the other front wheel or rear wheel of the vehicle arranged between the second active roller 230 and the second driven roller 240, the first in-place detection component 300 and the second in-place detection component 400 are both electrically connected to the controller, so that when the first in-place detection component 300 and the second in-place detection component 400 simultaneously detect the front wheel or rear wheel of the vehicle, the controller can control the first motor 250, the second motor 260 and the lifting drive component 130 to start. It can be understood that when one of the front wheels or the rear wheels of the vehicle is disposed between the first active roller 210 and the first driven roller 220, and the other front wheel or the rear wheel of the vehicle is disposed between the second active roller 230 and the second driven roller 240, it means that the two front wheels or the two rear wheels of the vehicle are moved into position. At this time, the first in-position detection component 300 can detect one of the front wheels or the rear wheels disposed between the first active roller 210 and the first driven roller 220, and the second in-position detection component 400 can detect the other front wheel or the rear wheel disposed between the second active roller 230 and the second driven roller 240. When the first in-place detection component 300 and the second in-place detection component 400 detect the front wheel or the rear wheel at the same time, the controller controls the first motor 250, the second motor 260 and the lifting drive component 130 to start, the lifting drive component 130 drives the bracket 110 to rise, the first motor 250 drives the first active roller 210 and the first driven roller 220 to rotate, and the second motor 260 drives the second active roller 230 and the second driven roller 240 to rotate.

[0050] As an embodiment of the utility model, the first in-position detection component 300 includes a first micro-touch switch, a first rotating rod 310, two first swing arms 320 and two first elastic members 330, the first micro-touch switch is arranged on the bracket 110, the first micro-touch switch is electrically connected to the controller, one end of the two first swing arms 320 can be rotatably connected to the bracket 110, the left and right ends of the first rotating rod 310 are respectively rotatably connected to the other end of the two first swing arms 320, and one end of the two first elastic members 330 is respectively connected to the two first swing arms The first rotating rod 310 is used to abut against one of the front wheels or the rear wheels of the vehicle between the first active roller 210 and the first driven roller 220, so that the other ends of the two first swing arms 320 can both swing downward, and one of the first swing arms 320 can abut against the first micro-touch switch, and the two first elastic members 330 are respectively used to pull one end of the two first swing arms 320, so that the other ends of the two first swing arms 320 can both swing upward. It can be understood that when one of the front wheels or the rear wheels of the vehicle moves between the first active roller 210 and the first driven roller 220, the first rotating rod 310 abuts against one of the vehicle or the rear wheels of the vehicle, so that the first rotating rod 310 is pressed down, and the other end of the first swing arm 320 can swing downward, and one of the first swing arms 320 abuts against the first micro-touch switch, so that a micro-touch switch is triggered; after one of the front wheels or the rear wheels of the vehicle leaves between the first active roller 210 and the first driven roller 220, under the elastic pulling force of the two first elastic members 330, the other ends of the two first swing arms 320 swing upward, thereby resetting the first rotating rod 310.

[0051] In the present invention, the second in-place detection assembly 400 has the same structure as the first in-place detection assembly 300, and the second in-place detection assembly 400 includes a second micro-touch switch, a second rotating rod, two second swing arms, and two second elastic members. After the first micro-touch switch and the second micro-touch switch are respectively in contact with the first swing arm 320 and the second swing arm at the same time, the first micro-touch switch and the second micro-touch switch are triggered at the same time, and only then can the controller control the first motor 250, the second motor 260 and the lifting drive mechanism to start.

[0052] In the utility model, the first rotating rod 310 and the second rotating rod are respectively in contact with the two front wheels or the two rear wheels of the vehicle. When the first motor 250 and the second motor 260 are started, the first active roller 210 and the first driven roller 220 drive one of the front wheels or the rear wheels to rotate, and the second active roller 230 and the second driven roller 240 drive the other front wheel or the rear wheel to rotate, thereby causing the first rotating rod 310 and the second rotating rod to also rotate with the two front wheels or the two rear wheels of the vehicle.

[0053] refer to Figure 3 and Figure 4 The vehicle loading brake station also includes a first speed detection component 500, which is electrically connected to the processor and is used to detect the rotation speed of the first rotating rod 310. It can be understood that the first speed detection component 500 can detect the rotation speed of the first rotating rod 310. Since the first rotating rod 310 is in contact with one of the front wheels or rear wheels of the vehicle, the rotation speed of the first rotating rod 310 is the rotation speed of one of the front wheels or rear wheels of the vehicle. Similarly, the second speed detection component 600 can detect the rotation speed of the second rotating rod. The first speed detection component 500 and the second speed detection component 600 can transmit the detected rotation speed values ​​of the first rotating rod 310 and the second rotating rod to the processor, so that the processor can more comprehensively analyze the braking performance of the vehicle according to the changes in the rotation speed and torque of the wheels.

[0054] refer to Figure 4 The first speed detection assembly 500 includes a first infrared sensor 510 and a first gear 520. The first infrared sensor 510 is disposed on one of the first swing arms 320. The first gear 520 is disposed at one end of the first rotating rod 310. The first infrared sensor 510 is used to detect the rotation frequency of the first gear 520. It can be understood that the first infrared sensor 510 can emit and receive infrared light. The infrared light of the first infrared sensor 510 is reflected by the surface of the first gear 520. When the first gear 520 rotates, the first infrared sensor 510 detects the change of the reflected light signal. The frequency of this change is related to the rotation speed of the first gear 520. By measuring this frequency, the processor can calculate the rotation speed of the first gear 520, and then the rotation speed of the first rotating rod 310 can be obtained. The structure of the second speed detection assembly 600 is exactly the same as that of the first speed detection assembly 500, and will not be discussed here.

[0055] As an embodiment of the present utility model, the lifting drive assembly 130 includes two hydraulic cylinders, the cylinder bodies of the two hydraulic cylinders are respectively arranged on the left and right ends of the support frame 100, and the piston rods of the two hydraulic cylinders are connected to the bracket 110.

[0056] In the present invention, the torque detection assembly 120 includes four torque sensors, which are respectively used to detect the torque changes of the first active roller 210, the first driven roller 220, the second active roller 230 and the second driven roller 240. The first active roller 210 is connected to the first driven roller 220 through a chain transmission, the second active roller 230 is connected to the second driven roller 240 through a chain transmission, the output end of the first motor 250 is connected to the first active roller 210, and the output end of the second motor 260 is connected to the second active roller 230.

[0057] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A vehicle loading brake stand, characterized in that: include: Support frame; A bracket, the bracket is connected to the support frame so as to be able to slide up and down; A roller drive assembly, the roller drive assembly is arranged on the bracket, the roller drive assembly is used to abut against the two front wheels or the two rear wheels of the vehicle and drive the two front wheels or the two rear wheels of the vehicle to rotate; A torque detection component, the torque detection component is arranged on the bracket, and the torque detection component is used to detect the torque change of the roller drive component; a processor, the processor being electrically connected to the torque detection component, and the processor being used to calculate a braking performance parameter of the vehicle; A lifting drive assembly is disposed on the support frame, wherein an output end of the lifting drive assembly is connected to the bracket, and the lifting drive assembly can drive the bracket and the roller drive assembly to rise, so as to increase the pressure between the two front wheels or the two rear wheels of the vehicle and the roller drive assembly.

2. The vehicle loading brake stand according to claim 1, characterized in that: The roller drive assembly includes a first active roller, a first driven roller, a second active roller, a second driven roller, a first motor and a second motor. The left and right ends of the first active roller, the first driven roller, the second active roller and the second driven roller are rotatably connected to the bracket. The axes of the first active roller and the second active roller coincide with each other. The axes of the first driven roller and the second driven roller coincide with each other. The first active roller is arranged in front of the first driven roller. The opposite outer walls of the first active roller and the first driven roller are used for contact with the vehicle. One of the front wheels or rear wheels of the vehicle is abutted, the first motor is arranged on the bracket, the first motor is used to drive the first active roller and the first driven roller to rotate, so that one of the front wheels or rear wheels of the vehicle is rotated, the second active roller is arranged in front of the second driven roller, the opposite outer walls of the second active roller and the second driven roller are used to abut against the other front wheel or rear wheel of the vehicle, the second motor is arranged on the bracket, the second motor is used to drive the second active roller and the second driven roller to rotate, so that the other front wheel or rear wheel of the vehicle is rotated.

3. The vehicle loading brake stand according to claim 2, characterized in that: The outer walls of the first active roller, the first driven roller, the second active roller and the second driven roller are all provided with anti-slip structures.

4. The vehicle loading brake stand according to claim 3, characterized in that: The anti-slip structure is a plastic particle layer.

5. The vehicle loading brake stand according to claim 2, characterized in that: It also includes a first in-place detection component, a second in-place detection component and a controller, the controller is used to control the start and stop of the first motor, the second motor and the lifting drive component, the first in-place detection component is arranged between the first active roller and the first driven roller, the second in-place detection component is arranged between the second active roller and the second driven roller, the first in-place detection component is used to detect one of the front wheels or rear wheels of the vehicle arranged between the first active roller and the first driven roller, the second in-place detection component is used to detect the other front wheel or rear wheel of the vehicle arranged between the second active roller and the second driven roller, the first in-place detection component and the second in-place detection component are both electrically connected to the controller, so that when the first in-place detection component and the second in-place detection component simultaneously detect the front wheel or rear wheel of the vehicle, the controller can control the first motor, the second motor and the lifting drive component to start.

6. The vehicle loading brake stand according to claim 5, characterized in that: The first in-position detection component includes a first micro-touch switch, a first rotating rod, two first swing arms and two first elastic members, the first micro-touch switch is arranged on the bracket, the first micro-touch switch is electrically connected to the controller, one end of the two first swing arms can be rotatably connected to the bracket, the left and right ends of the first rotating rod are respectively rotatably connected to the other end of the two first swing arms, one end of the two first elastic members is respectively connected to one end of the two first swing arms, the other ends of the two first elastic members are both connected to the bracket, the first rotating rod is used to abut against one of the front wheels or rear wheels of the vehicle arranged between the first active roller and the first driven roller, so that the other ends of the two first swing arms can both swing downward, and one of the first swing arms can abut against the first micro-touch switch, and the two first elastic members are respectively used to pull one end of the two first swing arms, so that the other ends of the two first swing arms can both swing upward.

7. The vehicle loading brake stand according to claim 6, characterized in that: It also includes a first speed detection component and a second speed detection component, the second in-place detection component includes a second micro-touch switch, a second rotating rod, two second swing arms and two second elastic members, the first speed detection component is electrically connected to the processor, the first speed detection component is used to detect the rotation speed of the first rotating rod, the second speed detection component is electrically connected to the processor, and the second speed detection component is used to detect the rotation speed of the second rotating rod.

8. The vehicle loading brake stand according to claim 7, characterized in that: The first speed detection component includes a first infrared sensor and a first gear. The first infrared sensor is arranged on one of the first swing arms. The first gear is arranged at one end of the first rotating rod. The first infrared sensor is used to detect the rotation frequency of the first gear.

9. The vehicle loading brake stand according to claim 1, characterized in that: The lifting drive assembly includes two hydraulic cylinders, the cylinder bodies of the two hydraulic cylinders are respectively arranged on the left and right ends of the support frame, and the piston rods of the two hydraulic cylinders are connected to the support frame.

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