A hydraulic wheel cylinder endurance test machine for automobile brake system

Abstract

The utility model relates to the field of automobile brake system testing equipment discloses a kind of automobile brake system hydraulic wheel cylinder endurance test testing machine.It includes equipment base, equipment base lower end is equipped with universal wheel, front end has oil drain groove and hydraulic oil collection structure;Upper end one side is equipped with filter plate, control panel, middle part detachably connected hydraulic wheel cylinder, one side of hydraulic wheel cylinder is connected electric push rod, outer wall connects quick-release connector, quick-release connector outer wall has connector stabilizing structure, one end is connected hub rotating structure, the testing machine is improved test stability and precision by optimizing structure design, perfects hydraulic oil closed-loop management, solves the problems, such as the big test error of existing equipment, waste oil is difficult to handle, meets the severe endurance test demand of automobile brake system hydraulic wheel cylinder, helps to guarantee brake system quality and safety, applicable to the performance test scene of hydraulic wheel cylinder for automobile brake parts production enterprises and detection mechanism.

Description

Technical Field

[0001] This utility model relates to the field of automotive braking system testing equipment, and in particular to a durability testing machine for hydraulic wheel cylinders of automotive braking systems. Background Technology

[0002] In today's rapidly developing automotive industry, the braking system, as the core safety barrier of a vehicle, directly impacts the safety of occupants and the stability of road driving. Hydraulic wheel cylinders, as key actuators in the braking system, must continuously withstand high-frequency pressure cycles, drastic temperature gradient changes, and dynamic mechanical vibrations under complex operating conditions. Their durability has become a core indicator for measuring the reliability of the braking system. Therefore, establishing a precise and efficient hydraulic wheel cylinder durability testing system has become a crucial aspect of automotive component quality control.

[0003] Currently, mainstream hydraulic wheel cylinder durability testing equipment faces significant technical bottlenecks. At the structural design level, traditional equipment often uses conventional interfaces for hydraulic pipeline connections. During prolonged, high-frequency testing, these interfaces are prone to problems such as seal failure and loosening of connections due to stress fatigue, leading to hydraulic oil leakage and pressure pulsation. This not only severely interferes with the accuracy of test data but may also cause equipment failure or even safety accidents. Furthermore, some equipment lacks precise control mechanisms for dynamic operating condition simulation, making it difficult to reproduce the complex load changes in real-world driving environments, resulting in significant deviations between test results and actual application scenarios. Regarding waste fluid treatment, most testing equipment is not equipped with integrated hydraulic oil recovery and purification systems. When extreme situations such as wheel cylinder seal failure or cylinder explosion occur during testing, the leaked hydraulic oil containing impurities cannot be collected and treated in a timely manner. This not only wastes expensive hydraulic media but also poses environmental pollution risks and equipment corrosion hazards due to oil spillage.

[0004] With the iterative upgrades of new energy vehicles and intelligent driving technologies, the industry's requirements for the reliability of braking systems continue to rise. There is an urgent need to develop new durability testing equipment with high rigidity structure, dynamic and accurate testing capabilities, and closed-loop management of hydraulic oil throughout the entire process, in order to break through existing technological bottlenecks and meet the urgent needs of the automotive industry for high-quality development. Utility Model Content

[0005] The present invention aims to provide a durability testing machine for hydraulic wheel cylinders of automotive braking systems. By optimizing the structural design and functional integration, it solves the problems of low testing accuracy, poor stability and insufficient hydraulic oil management of existing equipment.

[0006] The testing machine includes a base with casters at the bottom for easy movement and positioning. An oil drain trough is located at the front, and a hydraulic oil collection structure is installed. This structure consists of a fixed frame, a fixed base, connecting clips, fixing bolts, a collection box, a handle, and an oil guide frame. The fixed frame is detachably connected to the base, with the fixed base fixed to the upper part of the fixed frame. The connecting clips are detachably connected to the fixed base via fixing bolts. The collection box is fixed to the connecting clips, and the oil guide frame is detachably installed on the upper part of the collection box. This effectively collects leaked hydraulic oil during testing, enabling centralized treatment of waste liquid.

[0007] A hydraulic cylinder is detachably connected to the upper center of the equipment base, with an electric push rod on one side. The two ends of the electric push rod are detachably connected to the hydraulic cylinder and the equipment base, respectively, enabling precise drive of the hydraulic cylinder for durability testing. A quick-release connector is connected to the outer wall of the hydraulic cylinder, and a connector stabilization structure is installed on the outer wall of the quick-release connector. This structure includes a connecting base, a main connecting pipe, a secondary connecting pipe, a secondary limit frame, a main limit frame, and a retaining gasket. The connecting base is detachably connected to the equipment base. The main connecting pipe is fixed to the upper end of the connecting base, and the secondary connecting pipe is fixed to the main connecting pipe. The secondary and main limit frames are detachably connected to the secondary and main connecting pipes, respectively. The retaining gasket is fixed to the inner wall of the main and secondary limit frames, enhancing the stability of the pipeline connection and preventing oil leakage and pressure fluctuations during testing. In addition, a control panel is fixedly connected to one side of the equipment base for controlling test parameters; a filter plate is detachably connected to the upper side for preliminary filtration of the collected hydraulic oil.

[0008] Compared with existing technologies, this utility model improves the stability and testing accuracy of the equipment by optimizing the overall structural layout; the complete hydraulic oil collection and treatment system realizes the effective utilization of resources and environmental protection; the modular design facilitates the installation, maintenance and upgrading of the equipment, and meets the increasingly stringent durability testing requirements of hydraulic wheel cylinders in automotive braking systems. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is a partial structural schematic diagram of the present invention.

[0011] Figure 3 This utility model Figure 1 A schematic diagram of the hydraulic oil collection structure 3.

[0012] Figure 4 This utility model Figure 1 A schematic diagram of the stabilizing structure 9 of the central pipe.

[0013] In the diagram: 1. Equipment base; 2. Casters; 3. Hydraulic oil collection structure; 4. Oil drain trough; 5. Filter plate; 6. Control panel; 7. Electric push rod; 8. Hydraulic wheel cylinder; 9. Pipe stabilization structure; 10. Quick-release pipe; 11. Hub rotation structure; 31. Collection box; 32. Fixing frame; 33. Connecting clip; 34. Fixing bolt; 35. Handle; 36. Oil guide frame; 37. Fixed base; 91. Connecting base; 92. Secondary limit frame; 93. Secondary connecting pipe; 94. Supporting gasket; 95. Main limit frame; 96. Main connecting pipe. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] like Figure 1-4 As shown, this automotive braking system hydraulic wheel cylinder durability testing machine uses equipment base 1 as its basic support structure. Universal wheels 2 are installed on the lower outer surface of equipment base 1 via a movable connection. Universal wheels 2 can rotate and move flexibly, facilitating the transfer of the equipment between different testing sites or adjustment of testing positions. Once in position, the equipment can be stably fixed using the locking mechanism (such as a braking device) of the universal wheels 2, preventing equipment displacement during testing from affecting testing accuracy.

[0016] An oil drain groove 4 is provided on the front outer surface of the equipment base 1 to collect hydraulic oil that may leak during the test. Simultaneously, a hydraulic oil collection structure 3 is installed on the front outer surface to centrally collect and treat leaked hydraulic oil, preventing it from flowing freely and contaminating the test environment, wasting resources, and affecting the normal operation of the equipment. A filter plate 5 is installed on one side of the upper end of the equipment base 1 via a detachable connection (such as bolt connection or snap-fit ​​connection). The filter plate 5 can perform preliminary filtration of the collected hydraulic oil, removing larger particulate impurities. A control panel 6 is fixedly connected to one side of the outer surface. The control panel 6 integrates control buttons, a display screen, and other interactive components for operators to input test parameters (such as the number of pressure cycles, pressure value, test duration, etc.) and monitor test process data (such as real-time pressure, temperature, test progress, etc.).

[0017] A hydraulic cylinder 8 is detachably connected to the upper center of the equipment base 1, providing a basic hydraulic actuator for testing. An electric push rod 7 is detachably connected to one side of the outer surface of the hydraulic cylinder 8. The lower outer surface of the electric push rod 7 is also detachably connected to the upper outer surface of the equipment base 1. As a power output component, the electric push rod 7 can drive the hydraulic cylinder 8 according to the program set on the control panel 6, simulating the extension, contraction, and pressure changes of a braking system, thus driving the hydraulic cylinder 8 for durability testing. A quick-release connector 10 is detachably connected to the outer wall of the hydraulic cylinder 8. The quick-release connector 10 is used to construct the hydraulic circuit, and its outer wall is fitted with a connector stabilizing structure 9 to improve the stability and sealing of the pipeline connection. A hub rotation structure 11 is detachably connected to one end of the quick-release connector 10. The hub rotation structure 11 simulates the rotation state of the wheel hub, working in conjunction with the hydraulic cylinder 8 to simulate braking conditions. Its lower outer surface is detachably connected to the upper outer surface of the equipment base 1 for easy installation, debugging, and maintenance.

[0018] like Figure 1 , Figure 3 As shown, the hydraulic oil collection structure 3 consists of a collection box 31, a fixing frame 32, a connecting clip 33, a fixing bolt 34, a handle 35, an oil guide frame 36, and a fixing base 37.

[0019] First, one outer surface of the mounting bracket 32 ​​is detachably connected to one outer surface of the equipment base 1 via a bolted connection, providing a foundation support for the entire hydraulic oil collection structure 3. The lower outer surface of the fixed base 37 is fixedly connected to the upper outer surface of the mounting bracket 32 ​​via welding, bolting, or other methods, ensuring the fixed base 37 is securely installed. The outer wall of the connecting clip 33 is detachably connected to the inner wall of the fixed base 37, allowing the connecting clip 33 to be initially positioned by inserting it into corresponding slots or grooves on the inner wall of the fixed base 37. The outer wall of the fixing bolt 34 is threaded to the outer wall of the fixed base 37 via a movable connection, allowing one end of the fixing bolt 34 to penetrate the inner wall of the fixed base 37 and then be locked to the outer wall of the connecting clip 33 via a detachable connection such as a threaded connection or snap-fit, further securing the connecting clip 33 and preventing it from falling off during testing due to equipment vibration or other factors.

[0020] One outer surface of the collection box 31 is fixedly connected to one outer surface of the connecting clip 33 by welding, bolting, or other methods to collect leaked hydraulic oil guided by the oil guide frame 36. The lower outer surface of the handle 35 is fixedly connected to the upper outer surface of the connecting clip 33 by welding, bolting, or other methods, allowing operators to easily grip the handle 35 for installation, disassembly, cleaning, and maintenance of the connecting clip 33 and collection box 31. The lower outer surface of the oil guide frame 36 is detachably connected to one side of the upper end of the collection box 31 by a detachable connection (such as bolting, slotting, etc.). The oil guide frame 36 adopts an inclined structural design, with its higher end close to the equipment's drain trough 4 and its lower end facing the opening of the collection box 31. Gravity can be used to guide leaked hydraulic oil into the collection box 31, achieving effective collection of the hydraulic oil. When it is necessary to clean the hydraulic oil in the collection box 31 or maintain the hydraulic oil collection structure 3, the operator can unscrew the fixing bolt 34 through the handle 35, remove the connecting clip 33 from the fixed base 37, and take out the collection box 31 for cleaning, maintenance and other operations. The operation is convenient and efficient.

[0021] like Figure 1 , Figure 4 As shown, the pipe stabilization structure 9 consists of a connecting base 91, a secondary limiting frame 92, a secondary connecting pipe 93, a retaining pad 94, a main limiting frame 95, and a main connecting pipe 96.

[0022] The lower outer surface of the connecting base 91 is assembled with the upper outer surface of the equipment base 1 via a detachable connection (such as bolt connection, welding, etc.; bolt connection is preferred for ease of maintenance and replacement in the future), providing a stable installation foundation for the pipe stabilization structure 9. The lower outer surface of the main connecting pipe 96 is assembled with the upper outer surface of the connecting base 91 via a fixed connection method such as welding or threaded connection. The main connecting pipe 96 is used to connect with pipe components such as the quick-release pipe 10, forming the main channel of the hydraulic oil circuit. One end of the outer surface of the auxiliary connecting pipe 93 is assembled with the outer wall of the main connecting pipe 96 via a fixed connection method such as welding or threaded connection. As an auxiliary connecting pipe, it can be used to connect components such as pressure sensors and auxiliary oil circuits, expanding the functionality of the pipeline.

[0023] The outer wall of the secondary limit frame 92 is assembled with the outer surface of the other end of the secondary connecting pipe 93 through a detachable connection (such as bolt connection, snap connection, etc.). The outer wall of the main limit frame 95 is assembled with the upper outer surface of the main connecting pipe 96 through a detachable connection (such as bolt connection, snap connection, etc.). The secondary limit frame 92 and the main limit frame 95 play a role in limiting and reinforcing the pipe connection parts, preventing the pipe from shifting or loosening due to pressure fluctuations, equipment vibration and other factors during the test. The outer wall of the retaining gasket 94 is fixedly connected to the inner walls of the main limiting frame 95 and the secondary limiting frame 92 by means of adhesive bonding, embedding, or other fixed connection methods. The retaining gasket 94 is made of elastic and well-sealing materials (such as rubber, silicone, etc.). When pipeline components (such as quick-release connector 10) are inserted into the main connecting pipe 96 and the secondary connecting pipe 93, the retaining gasket 94 can fit tightly between the outer wall of the pipeline and the inner wall of the limiting frame. On the one hand, it enhances the sealing of the pipeline connection and prevents hydraulic oil leakage; on the other hand, it uses its elastic buffering performance to absorb the vibration of the pipeline caused by pressure changes, further improving the stability of the pipeline connection, ensuring the pressure stability of the hydraulic oil circuit during the test, and improving the accuracy of the test data.

[0024] Throughout the testing process, all components work together. The equipment base 1 provides a stable support foundation for other components; the casters 2 enable flexible movement and fixation of the equipment; the control panel 6 precisely controls the testing process and parameters; the electric push rod 7 drives the hydraulic wheel cylinder 8 to simulate braking action; the hydraulic oil collection structure 3 effectively collects and treats leaked hydraulic oil; the pipe stabilization structure 9 ensures stable and sealed pipe connections; and components such as the quick-release pipe 10 and the wheel hub rotation structure 11 work in concert to complete the durability test of the hydraulic wheel cylinder of the automotive braking system. This accurately simulates the working state of the hydraulic wheel cylinder under actual working conditions, providing a reliable testing environment and data support for testing the durability performance of the hydraulic wheel cylinder, and meeting the needs of hydraulic wheel cylinder quality testing in the research and development and production of automotive braking systems.

[0025] Working principle

[0026] This utility model relates to a durability testing machine for hydraulic wheel cylinders in automotive braking systems. During use, test parameters (such as pressure cycle count, thrust value, and operating frequency) are input into the control panel. The electric push rod receives the control signal and converts electrical energy into linear mechanical energy, periodically pushing the hydraulic wheel cylinder to extend and retract. The piston inside the hydraulic wheel cylinder reciprocates with the push rod, simulating the process in the braking system where the wheel cylinder is driven by the pressure of the master cylinder, pushing the brake pads to clamp the brake disc. This achieves a cyclical test of pressure loading and release. During testing, the wheel hub rotating structure rotates continuously or intermittently at a set speed, coordinating with the extension and retraction of the hydraulic wheel cylinder to reproduce the complete braking cycle of "wheel rotation—wheel cylinder braking—wheel deceleration / stop—wheel cylinder reset—wheel resumes rotation," accurately simulating the dynamic working conditions of the hydraulic wheel cylinder in actual driving.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A durability testing machine for hydraulic wheel cylinders of automotive braking systems, comprising a base (1), characterized in that: The lower outer surface of the equipment base (1) is provided with casters (2), the front outer surface of the equipment base (1) is provided with an oil drain groove (4), the front outer surface of the equipment base (1) is provided with a hydraulic oil collection structure (3), the hydraulic oil collection structure (3) includes a fixing frame (32); a filter plate (5) is provided on one side of the upper end of the equipment base (1), a control panel (6) is provided on one side of the outer surface of the equipment base (1), a hydraulic cylinder (8) is provided in the middle of the upper end of the equipment base (1), an electric push rod (7) is provided on one side of the outer surface of the hydraulic cylinder (8), a quick-release pipe (10) is provided on the outer wall of the hydraulic cylinder (8), a pipe stabilizing structure (9) is provided on the outer wall of the quick-release pipe (10), the pipe stabilizing structure (9) includes a connecting base (91); a hub rotating structure (11) is provided on one end of the outer surface of the quick-release pipe (10).

2. The durability testing machine for hydraulic wheel cylinders of automotive braking systems according to claim 1, characterized in that: The hydraulic oil collection structure (3) further includes a collection box (31), a connecting clip (33), a fixing bolt (34), a handle (35), an oil guide frame (36), and a fixed base (37). The upper outer surface of the fixed frame (32) is provided with a fixed base (37), the outer wall of the fixed base (37) is provided with a fixing bolt (34), the inner wall of the fixed base (37) is provided with a connecting clip (33), the upper outer surface of the connecting clip (33) is provided with a handle (35), one side of the outer surface of the connecting clip (33) is provided with a collection box (31), and one side of the upper end of the collection box (31) is provided with an oil guide frame (36). One side of the fixed frame (32) is detachably connected to the equipment base (1).

3. The automotive braking system hydraulic wheel cylinder durability testing machine according to claim 1, characterized in that: The connecting pipe stabilization structure (9) also includes a secondary limiting frame (92), a secondary connecting pipe (93), a retaining pad (94), a main limiting frame (95), and a main connecting pipe (96). The main connecting pipe (96) is provided on the upper outer surface of the connecting base (91). The secondary connecting pipe (93) is provided on the outer wall of the main connecting pipe (96). The secondary limiting frame (92) is provided on the outer surface of one end of the secondary connecting pipe (93). The main limiting frame (95) is provided on the upper outer surface of the main connecting pipe (96). The retaining pad (94) is provided on the inner wall of both the main limiting frame (95) and the secondary limiting frame (92). The lower end of the connecting base (91) is detachably connected to the equipment base (1).

4. The automotive braking system hydraulic wheel cylinder durability testing machine according to claim 1, characterized in that: The lower outer surface of the equipment base (1) is movably connected to the universal wheel (2), one side of the upper end of the equipment base (1) is detachably connected to the filter plate (5), and one side of the equipment base (1) is fixedly connected to the control panel (6); a hydraulic wheel cylinder (8) is detachably installed in the middle of the upper end of the equipment base (1), and the two ends of the electric push rod (7) are detachably connected to the equipment base (1) and the hydraulic wheel cylinder (8) respectively; a quick-release pipe (10) is assembled on the outer wall of the hydraulic wheel cylinder (8), and the end of the quick-release pipe (10) is connected to the hub rotating structure (11), and the bottom of the hub rotating structure (11) is detachably connected to the equipment base (1).

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