Pneumatic coupling supercharging device

Abstract

The utility model provides a pneumatic coupling supercharging device. The pneumatic coupling supercharging device comprises a base, an electric cylinder, a first sliding assembly, an air cylinder, a second sliding assembly, a push rod and a main cylinder, the front end of a lead screw of the electric cylinder is connected with the rear end of the first sliding assembly. The front end of the first sliding assembly is connected with the rear portion of a cylinder body of the air cylinder. A piston at the front end of the air cylinder is connected with the rear end of the second sliding assembly, the front end of the second sliding assembly is connected to the rear end of the push rod, and the front end of the push rod is connected to a piston of the main cylinder. The electric cylinder pushes the first sliding assembly to move, and the first sliding assembly pushes a cylinder body of the air cylinder to move. Movement of a cylinder body or a piston of the cylinder pushes the second sliding assembly to move, so that the push rod pushes the piston of the main cylinder; and an oil outlet of the main cylinder is communicated with a hydraulic control module of a tested sample piece through an oil path. The device can be used for simulating the processes of whole vehicle driving, brake pedal stepping by a driver and main cylinder pressurization.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile safety detection, in particular to a pneumatic coupling boosting device. Background Art

[0002] The car's brake system is a complex mechanical structure, including key components such as the brake pedal, brake oil pipe, brake disc, and brake pads. When we need to brake, we first step on the brake pedal, which pushes the piston in the master cylinder to move, and then pushes the brake oil through the brake oil pipe to the brake cylinder. Finally, the piston in the brake cylinder pushes the brake pad to clamp the brake disc, thereby achieving the braking function.

[0003] Electronic Stability Control (ESC) is an active safety adjustment system that assists the driver in controlling the vehicle. Its basic function is to control the hydraulic circuit of the vehicle's braking system, distribute the braking force to the wheels, and adjust the torque.

[0004] When testing the ESC, the brake pedal is usually pressed manually to push the piston of the master cylinder to move. This testing method consumes human resources.

[0005] Therefore, an intelligent booster device is expected to replace manpower to drive the piston movement in the master cylinder. Utility Model Content

[0006] The utility model aims to provide a pneumatic coupling booster device, which can replace manpower to push the piston of the master cylinder to move and realize the pressure building of the master cylinder.

[0007] In order to achieve the above object, the utility model provides a pneumatic coupling booster device, comprising:

[0008] A base and an electric cylinder, a first sliding assembly, a pneumatic cylinder, a second sliding assembly, a push rod and a main cylinder arranged in a straight line on the base;

[0009] The front end of the lead screw of the electric cylinder is connected to the rear end of the first sliding assembly;

[0010] The front end of the first sliding assembly is connected to the rear part of the cylinder body of the cylinder;

[0011] The piston at the front end of the cylinder is connected to the rear end of the second sliding assembly, the front end of the second sliding assembly is connected to the rear end of the push rod, and the front end of the push rod is connected to the piston of the master cylinder;

[0012] The electric cylinder pushes the first sliding assembly to move, and the first sliding assembly pushes the cylinder body of the air cylinder to move; the movement of the cylinder body of the air cylinder or the movement of the piston of the air cylinder pushes the second sliding assembly to move, thereby causing the push rod to push the piston of the master cylinder;

[0013] The oil outlet of the master cylinder is communicated with the hydraulic control module of the tested sample through an oil circuit.

[0014] In an optional solution, the booster device includes an electric cylinder bracket, and the cylinder wall of the electric cylinder is mounted on the base through the electric cylinder bracket.

[0015] In an optional solution, the boosting device also includes an oil pressure sensor, and the oil pressure sensor is installed on the oil circuit of the master cylinder.

[0016] In an optional solution, the boosting device includes a master cylinder bracket, and the master cylinder is mounted on the base through the master cylinder bracket.

[0017] In an optional solution, the electric cylinder is integrated with a servo motor, and the lead screw of the electric cylinder moves under the action of the servo motor, converting the rotational motion of the servo motor into linear motion to provide thrust simulating the movement of the brake pedal.

[0018] In an optional solution, the boosting device also includes a host computer, which sends instructions to control the movement of the electric cylinder and set the cylinder pressure value.

[0019] In an optional solution, the oil pressure sensor is communicatively connected to the host computer.

[0020] The beneficial effects of the utility model are:

[0021] The device can be used to simulate the process of the whole vehicle driving, the driver stepping on the brake pedal, and the master cylinder pressurizing. The electric cylinder, the air cylinder, and the push rod are connected by the first sliding component and the second sliding component, so that the cylinder wall is pushed forward by the electric cylinder, the cylinder piston builds pressure to push the push rod forward, or the cylinder reduces pressure and the push rod retreats. In this process, the cylinder plays a buffering role (in the process of building pressure on the master cylinder, the master cylinder piston will retreat in the opposite direction due to the return oil of the ESC. If there is no air cylinder, the electric cylinder's lead screw does not have a reverse function and the motor will be stuck). Therefore, the utility model combines the speed of the electric cylinder with the flexible buffering of the air cylinder to simulate the pressure building of the master cylinder by human power. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, in which the same reference numerals generally represent the same components.

[0023] Figure 1 It is a schematic structural diagram of a pneumatic coupling boosting device in one embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1-Servo motor; 2-Electric cylinder; 3-Air cylinder; 4-Push rod; 5-Master cylinder bracket; 6-Master cylinder; 7-Oil pressure sensor; 81-First sliding assembly; 82-Second sliding assembly; 9-Electric cylinder bracket; 10-Base. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description and drawings, the advantages and features of the utility model will be more clear. However, it should be noted that the concept of the technical solution of the utility model can be implemented in a variety of different forms and is not limited to the specific embodiments described here. The drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0027] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0028] Spatially relative terms such as "under," "below," "below," "under," "above," "above," etc., may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, the spatially relative terms are intended to include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0029] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be a limitation of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising" when used in this specification determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0030] Example 1

[0031] Reference Figure 1 , this embodiment provides a pneumatic coupling boosting device, comprising:

[0032] A base 10 and an electric cylinder 2, a first sliding assembly 81, a pneumatic cylinder 3, a second sliding assembly 82, a push rod 4 and a main cylinder 6 arranged in a straight line on the base 10;

[0033] The front end of the lead screw of the electric cylinder 2 is connected to the rear end of the first sliding component 81;

[0034] The front end of the first sliding assembly 81 is connected to the rear part of the cylinder body of the cylinder 3;

[0035] The piston at the front end of the cylinder 3 is connected to the rear end of the second sliding assembly 82, the front end of the second sliding assembly 82 is connected to the rear end of the push rod 4, and the front end of the push rod 4 is connected to the piston of the master cylinder 6;

[0036] The electric cylinder 2 pushes the first sliding assembly 81 to move, and the first sliding assembly 81 pushes the cylinder body of the air cylinder 3 to move; the movement of the cylinder body of the air cylinder 3 or the movement of the piston of the air cylinder pushes the second sliding assembly 81 to move, thereby causing the push rod 4 to push the piston of the master cylinder 6;

[0037] The oil outlet of the master cylinder 6 is connected to the hydraulic control module of the tested sample (such as the electronic stability control system ESC) through an oil circuit.

[0038] Specifically, the booster device is suitable for testing the basic performance of the electric brake system, hardware-in-the-loop simulation test, and the like. In this embodiment, the base 10 is used to provide a mounting point for installing other parts and is fixedly installed above the hydraulic load cabinet. The electric cylinder 2 is integrated with a servo motor 1 to provide power for the movement of the electric cylinder. The screw rod inside the electric cylinder 2 moves under the action of the servo motor 1, converting the rotational motion of the servo motor 1 into linear motion to provide thrust to simulate the movement of the brake pedal. The front end of the screw rod of the electric cylinder is connected to the first sliding assembly, which pushes the first sliding assembly to move under the action of the servo motor. The first sliding assembly is connected to the cylinder body of the cylinder to push the cylinder to move. The piston of the cylinder is connected to the rear end of the second sliding assembly, and the front end of the second sliding assembly is connected to the push rod. The cylinder body of the cylinder moves or the piston of the cylinder moves, and the push rod moves through the second sliding assembly. The push rod 4 is pushed by the piston of the cylinder 3 and directly contacts the master cylinder 6, which is used to build pressure and provide thrust for the master cylinder 6. The master cylinder 6 is the object of the booster device to achieve boosting.

[0039] In the process of building up pressure in the master cylinder, the oil return of the ESC will cause the piston of the master cylinder to move back in the opposite direction. If there is no air cylinder, the motor will be stuck because the lead screw of the electric cylinder does not have a reverse function, and the air cylinder will act as a buffer. This device combines the speed of the electric cylinder with the flexible buffer of the air cylinder to simulate human power to build up pressure in the master cylinder.

[0040] The cylinder 3 can keep the pressure generated by the device at a relatively constant level through the relative movement of the piston and the cylinder body, and the adjustment of the proportional valve. The first sliding assembly 81 and the second sliding assembly 82 play a guiding role when the cylinder 3 and the electric cylinder 2 move.

[0041] In this embodiment, the booster device includes an electric cylinder bracket 81, and the cylinder wall of the electric cylinder 2 is mounted on the base 10 through the electric cylinder bracket 81. The booster device includes a master cylinder bracket 91, and the master cylinder 6 is mounted on the base 10 through the master cylinder bracket 91.

[0042] In this embodiment, the booster device further comprises a host computer, which sends instructions to control the movement of the electric cylinder 2 and to set the pressure value of the air cylinder 3. The zero point calibration of the front end of the push rod can be achieved by sending instructions from the host computer.

[0043] In this embodiment, the booster device further includes an oil pressure sensor, which is installed in the oil circuit of the master cylinder, such as the oil outlet, for collecting the oil pressure of the master cylinder and sending it to the host computer for communication. The oil pressure sensor has a range of 0-250 bar.

[0044] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A pneumatic coupling booster device, characterized in that: include: A base and an electric cylinder, a first sliding assembly, a pneumatic cylinder, a second sliding assembly, a push rod and a main cylinder arranged in a straight line on the base; The front end of the lead screw of the electric cylinder is connected to the rear end of the first sliding assembly; The front end of the first sliding assembly is connected to the rear part of the cylinder body of the cylinder; The piston at the front end of the cylinder is connected to the rear end of the second sliding assembly, the front end of the second sliding assembly is connected to the rear end of the push rod, and the front end of the push rod is connected to the piston of the master cylinder; The electric cylinder pushes the first sliding assembly to move, and the first sliding assembly pushes the cylinder body of the air cylinder to move; the movement of the cylinder body of the air cylinder or the movement of the piston of the air cylinder pushes the second sliding assembly to move, thereby causing the push rod to push the piston of the master cylinder; The oil outlet of the master cylinder is communicated with the hydraulic control module of the tested sample through an oil circuit.

2. The pneumatic coupling booster device according to claim 1, characterized in that: The booster device comprises an electric cylinder bracket, and a cylinder wall of the electric cylinder is mounted on the base through the electric cylinder bracket.

3. The pneumatic coupling booster device according to claim 1, characterized in that: The boosting device further includes an oil pressure sensor, which is installed in the oil circuit of the master cylinder.

4. The pneumatic coupling booster device according to claim 1, characterized in that: The boosting device comprises a master cylinder bracket, and the master cylinder is mounted on the base through the master cylinder bracket.

5. The pneumatic coupling booster device according to claim 1, characterized in that: The electric cylinder is integrated with a servo motor, and the lead screw of the electric cylinder moves under the action of the servo motor, converting the rotational motion of the servo motor into linear motion to provide a thrust simulating the motion of the brake pedal.

6. The pneumatic coupling booster device according to claim 3, characterized in that: The boosting device also includes a host computer, which sends instructions to control the movement of the electric cylinder and set the cylinder pressure value.

7. The pneumatic coupling booster device according to claim 6, characterized in that: The oil pressure sensor is communicatively connected to the host computer.

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