Brake system pressure volume test bench

Abstract

The utility model discloses a brake system pressure volume test bench, which comprises a test box, a support seat is fixedly connected inside the test box, one side of the inner wall of the test box is fixedly connected with an electric linear driving structure, one side of the upper surface of the support seat is fixedly connected with a hydraulic master cylinder, and the hydraulic master cylinder is fixedly connected with a hydraulic cylinder. A driving piston is movably connected to the interior of the hydraulic main cylinder, an oil storage tank is fixedly connected to the other side of the upper surface of the supporting seat, an input structure is fixedly connected to the upper surface of the oil storage tank, a brake hose is fixedly connected to the lower end of the surface of the hydraulic main cylinder, and a hydraulic cylinder to be tested is fixedly connected to the other end of the brake hose. By arranging the input structure, the device can adjust the volume of brake fluid in a brake system and measure the content of the volume of the input brake fluid, and by arranging the electric linear driving structure, the device can test the pressure value of the hydraulic cylinder to be tested so as to calculate the pressure volume of the brake system.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure test structures, in particular to a brake system pressure volume test bench. Background Technique

[0002] The pressure volume refers to the amount of brake fluid that needs to be replenished to the brake system at different pressures during the pressure establishment process of the brake system due to the deformation of components such as brake calipers, friction pads, brake hard pipes, and brake hoses, as well as the compression of the brake fluid itself. The relationship between this pressure and volume reflects the stiffness and response characteristics of the entire brake hydraulic system.

[0003] If the stiffness of the brake hydraulic system is low and more brake fluid needs to be replenished during pressure build-up, the response of the vehicle's brake system will be slower, which may cause the driver to feel that the brakes are soft. On the contrary, if the stiffness of the brake hydraulic system is too high and the pressure build-up is very rapid with less brake fluid needed to be replenished, the response of the vehicle's brake system will be faster, which will also make the driver feel that the brakes are very hard. Some devices are difficult to obtain detailed data on pressure volume, so a brake system pressure volume test bench is needed. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a brake system pressure volume test bench.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A brake system pressure volume test bench includes a test box. A support seat is fixedly connected inside the test box. One side of the inner wall of the test box is fixedly connected with an electric linear drive structure. One side of the upper surface of the support seat is fixedly connected with a hydraulic master cylinder. A driving piston is movably connected inside the hydraulic master cylinder. The other side of the upper surface of the support seat is fixedly connected with an oil storage tank. An input structure is fixedly connected to the upper surface of the oil storage tank. The lower end of the surface of the hydraulic master cylinder is fixedly connected with a brake hose. The other end of the brake hose is fixedly connected with a hydraulic cylinder to be tested. The lower surface of the hydraulic cylinder to be tested is fixedly connected inside the test box. A driven piston is movably connected inside the hydraulic cylinder to be tested. An installation groove is formed in the front surface of the test box, and a pressure sensor is fixedly installed inside the installation groove.

[0007] As a further improvement of the utility model, the electric linear drive structure includes an installation seat. A threaded rod is rotatably connected inside the installation seat. A pressure seat is threadedly sleeved on the surface of the threaded rod. A power motor is fixedly installed on the upper surface of the installation seat. The power end of the power motor is connected to the threaded rod. Two limiting rods are fixedly connected to both sides inside the installation seat.

[0008] As a further improvement of the present utility model, the input structure includes a first oil pump fixedly connected to the upper surface of the fuel tank. The input end of the first oil pump is connected to the fuel tank, and the output end of the first oil pump is fixedly connected with an oil delivery pipe. The other end of the oil delivery pipe is fixedly connected to the hydraulic master cylinder. One end of the surface of the oil delivery pipe is fixedly connected with a flow sensor, and the other end of the surface of the oil delivery pipe is fixedly connected with a first solenoid valve.

[0009] As a further improvement of the present utility model, one side of the test box is fixedly connected with a supplementary pipe, and one end of the supplementary pipe is fixedly connected to the fuel tank.

[0010] As a further improvement of the present utility model, one side of the test box is fixedly connected with a collection box, and the upper surface of the collection box is fixedly connected with a second oil pump.

[0011] As a further improvement of the present utility model, the output end of the second oil pump is fixedly connected with an oil outlet pipe, the other end of the oil outlet pipe is fixedly connected to the hydraulic cylinder to be tested, and the surface of the oil outlet pipe is fixedly connected with a second solenoid valve.

[0012] Advantages of the present utility model:

[0013] By setting the input structure, during use, open the first solenoid valve and start the first oil pump to input brake fluid into the hydraulic master cylinder. The flow sensor can measure the volume of the brake fluid input into the hydraulic master cylinder. By adjusting the volume of the brake fluid inside the hydraulic master cylinder, the brake hose and the hydraulic cylinder to be tested through the second oil pump and the second solenoid valve, the device can adjust the volume of the brake fluid inside the braking system and can measure the content of the input brake fluid volume, which is convenient for subsequent calculation of the pressure volume of the equipment.

[0014] By setting the electric linear drive structure and the pressure sensor, during use, start the power motor to drive the threaded rod to rotate, so that the pressure seat moves downward. While the pressure seat moves downward, it presses the active piston on the hydraulic master cylinder. Since the hydraulic master cylinder and the hydraulic cylinder to be tested are connected together through the brake hose, according to Pascal's principle, the piston inside the hydraulic cylinder to be tested is pushed towards the pressure sensor at this time, and the pressure value is obtained through the pressure sensor, so that the device can test the pressure value of the hydraulic cylinder to be tested, and thus calculate the pressure volume of the braking system through the volume and pressure value of the brake fluid, increasing the practicality of the device. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a pressure volume test bench for a braking system proposed by the present utility model;

[0016] Figure 2 It is a schematic structural diagram inside the test box of a pressure volume test bench for a braking system proposed by the present utility model;

[0017] Figure 3 This is a schematic structural diagram of an electric linear drive structure for a brake system pressure volume test bench proposed by the present utility model.

[0018] In the figure: 1 test box, 2 support seat, 3 hydraulic master cylinder, 4 active piston, 5 fuel tank, 6 brake hose, 7 hydraulic cylinder to be tested, 8 passive piston, 9 installation groove, 10 pressure sensor, 11 mounting seat, 12 threaded rod, 13 pressure seat, 14 power motor, 15 limit rod, 16 first oil pump, 17 oil pipeline, 18 flow sensor, 19 first solenoid valve, 20 replenishing pipe, 21 collection box, 22 second oil pump, 23 outlet pipe, 24 second solenoid valve. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] Referring to Figures 1-3 , a brake system pressure volume test bench includes a test box 1. A support seat 2 is fixedly connected inside the test box 1. An electric linear drive structure is fixedly connected to one side of the inner wall of the test box 1. One side of the upper surface of the support seat 2 is fixedly connected with a hydraulic master cylinder 3. An active piston 4 is movably connected inside the hydraulic master cylinder 3. The other side of the upper surface of the support seat 2 is fixedly connected with a fuel tank 5. An input structure is fixedly connected to the upper surface of the fuel tank 5. The lower end of the surface of the hydraulic master cylinder 3 is fixedly connected with a brake hose 6. The other end of the brake hose 6 is fixedly connected with a hydraulic cylinder to be tested 7. The lower surface of the hydraulic cylinder to be tested 7 is fixedly connected inside the test box 1. A passive piston 8 is movably connected inside the hydraulic cylinder to be tested 7. An installation groove 9 is opened on the front surface of the test box 1. A pressure sensor 10 is fixedly installed inside the installation groove 9.

[0021] In the present utility model, the electric linear drive structure includes a mounting seat 11. A threaded rod 12 is rotatably connected inside the mounting seat 11. A pressure seat 13 is threadedly sleeved on the surface of the threaded rod 12. A power motor 14 is fixedly installed on the upper surface of the mounting seat 11. The power end of the power motor 14 is connected to the threaded rod 12. Limit rods 15 are fixedly connected to both sides inside the mounting seat 11. Starting the power motor 14 drives the threaded rod 12 to rotate, and presses the active piston 4 by moving the pressure seat 13 downward;

[0022] The input structure includes a first oil pump 16 fixedly connected to the upper surface of the oil storage tank 5. The input end of the first oil pump 16 is connected to the oil storage tank 5, and the output end of the first oil pump 16 is fixedly connected with an oil delivery pipe 17. The other end of the oil delivery pipe 17 is fixedly connected to the hydraulic master cylinder 3. One end of the surface of the oil delivery pipe 17 is fixedly connected with a flow sensor 18, and the other end of the surface of the oil delivery pipe 17 is fixedly connected with a first solenoid valve 19. Open the first solenoid valve 19 and start the first oil pump 16 to input brake fluid into the hydraulic master cylinder 3, and measure the capacity of the input brake fluid through the flow sensor 18;

[0023] One side of the test box 1 is fixedly connected with a replenishing pipe 20. One end of the replenishing pipe 20 is fixedly connected to the oil storage tank 5. One side of the test box 1 is fixedly connected with a collection box 21. The upper surface of the collection box 21 is fixedly connected with a second oil pump 22. The output end of the second oil pump 22 is fixedly connected with an oil outlet pipe 23. The other end of the oil outlet pipe 23 is fixedly connected to the hydraulic cylinder to be tested 7. The surface of the oil outlet pipe 23 is fixedly connected with a second solenoid valve 24. Open the second solenoid valve 24 and start the second oil pump 22 to suck the brake fluid into the collection box 21, so as to adjust the capacity of the brake fluid inside the hydraulic master cylinder 3, the brake hose 6 and the hydraulic cylinder to be tested 7.

[0024] When the present utility model is in use, first add brake fluid into the oil storage tank 5 through the replenishing pipe 20, open the first solenoid valve 19 and start the first oil pump 16 to input brake fluid into the hydraulic master cylinder 3. The flow sensor 18 can measure the capacity of the brake fluid input into the hydraulic master cylinder 3. Adjust the capacity of the brake fluid inside the hydraulic master cylinder 3, the brake hose 6 and the hydraulic cylinder to be tested 7 through the second oil pump 22 and the second solenoid valve 24. Then start the power motor 14 to drive the threaded rod 12 to rotate, so that the pressure seat 13 moves downward. While the pressure seat 13 moves downward, it presses the active piston 4 inside the hydraulic master cylinder 3. Since the hydraulic master cylinder 3 and the hydraulic cylinder to be tested 7 are connected together through the brake hose 6, according to Pascal's principle, the passive piston 8 inside the hydraulic cylinder to be tested 7 is pushed towards the pressure sensor 10 at this time, and the pressure value is obtained through the pressure sensor 10. Finally, repeat the above operations to obtain the pressure values under different brake fluid capacities, so as to calculate the pressure volume of the braking system through the capacity and pressure value of the brake fluid.

[0025] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A brake system pressure volume test bench, comprising a test box (1), characterized in that: The test box (1) is fixedly connected to a support seat (2) inside, and an electric linear drive structure is fixedly connected to one side of the inner wall of the test box (1). A hydraulic master cylinder (3) is fixedly connected to one side of the upper surface of the support seat (2), and an active piston (4) is movably connected inside the hydraulic master cylinder (3). An oil storage tank (5) is fixedly connected to the other side of the upper surface of the support seat (2), and an input structure is fixedly connected to the upper surface of the oil storage tank (5). A brake hose (6) is fixedly connected to the lower end of the surface of the hydraulic master cylinder (3), and the other end of the brake hose (6) is fixedly connected to a hydraulic cylinder to be tested (7). The lower surface of the hydraulic cylinder to be tested (7) is fixedly connected to the test box (1), and a passive piston (8) is movably connected inside the hydraulic cylinder to be tested (7). A mounting groove (9) is provided on the front of the test box (1), and a pressure sensor (10) is fixedly installed inside the mounting groove (9).

2. A brake system pressure volume test bench according to claim 1, characterized in that: The electric linear drive structure comprises a mounting seat (11), a threaded rod (12) is rotatably connected inside the mounting seat (11), a pressure seat (13) is threadedly sleeved on the surface of the threaded rod (12), a power motor (14) is fixedly mounted on the upper surface of the mounting seat (11), a power end of the power motor (14) is connected to the threaded rod (12), and limiting rods (15) are fixedly connected to both sides of the interior of the mounting seat (11).

3. A brake system pressure volume test bench according to claim 1, characterized in that: The input structure comprises a first oil pump (16) fixedly connected to the upper surface of the oil storage tank (5); the input end of the first oil pump (16) is connected to the oil storage tank (5); the output end of the first oil pump (16) is fixedly connected to an oil delivery pipe (17); the other end of the oil delivery pipe (17) is fixedly connected to the hydraulic master cylinder (3); one end of the surface of the oil delivery pipe (17) is fixedly connected to a flow sensor (18); and the other end of the surface of the oil delivery pipe (17) is fixedly connected to a first solenoid valve (19).

4. A brake system pressure volume test bench according to claim 1, characterized in that: A supplementary pipe (20) is fixedly connected to one side of the test box (1), and one end of the supplementary pipe (20) is fixedly connected to the oil storage tank (5).

5. A brake system pressure volume test bench according to claim 1, characterized in that: A collecting box (21) is fixedly connected to one side of the test box (1), and a second oil pump (22) is fixedly connected to the upper surface of the collecting box (21).

6. A brake system pressure volume test bench according to claim 5, characterized in that: The output end of the second oil pump (22) is fixedly connected to an oil outlet pipe (23), the other end of the oil outlet pipe (23) is fixedly connected to the hydraulic cylinder to be tested (7), and the surface of the oil outlet pipe (23) is fixedly connected to a second solenoid valve (24).

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