Comprehensive test bench for pneumatic component of special vehicle

Abstract

The utility model discloses a comprehensive test bed for pneumatic parts of a special vehicle. The comprehensive test bed comprises a test bed base frame, a control piece, an execution piece, a power element, a monitoring piece and a pipe assembly, the control part comprises a hand brake valve, an incremental valve and the like, the execution part comprises a diaphragm brake air chamber and a spring brake air chamber, the power element comprises an air storage cylinder, and the monitoring part comprises a double-needle barometer; pneumatic communication is realized through the pipe assembly, and the working principle of a special vehicle gas path system is simulated; according to the utility model, the gas path system can be comprehensively detected, the repair quality is improved, the working condition of each part is visually displayed, a repairman is helped to master the structure and principle of the gas path system, and the device has remarkable technical advantages and application value.

Description

Technical Field

[0001] This utility model relates to the technical field of furniture equipment, and in particular to a comprehensive test bench for pneumatic components of special vehicles. Background Technology

[0002] In the field of special vehicle maintenance and testing, pneumatic components, as a crucial part of the vehicle's braking and auxiliary air systems, directly impact vehicle safety and operational efficiency through their reliability and stability. However, existing equipment repair shops typically lack a complete set of pneumatic system testing equipment, making it impossible to conduct comprehensive functional testing and performance evaluation of each component before test drives. This deficiency makes it difficult to detect potential component damage in a timely manner, thus extending workshop production schedules and increasing maintenance costs. Furthermore, the pneumatic systems of special vehicles are usually distributed across multiple locations on the vehicle body, often surrounded by obstacles. This not only increases the operational difficulty for maintenance personnel but also significantly hinders their learning and mastery of the system's structure and operating principles. Currently, there is no comprehensive testing device capable of centrally simulating the working state of pneumatic components in special vehicles to visually demonstrate the operation of each component and help maintenance personnel fully understand the pneumatic system's operating mechanism. Therefore, developing a comprehensive test bench that can completely simulate the working principle of a real vehicle's pneumatic system for testing its sealing, functionality, and reliability has become an urgent technical problem to be solved. The advent of this device will significantly improve maintenance quality and efficiency, while providing maintenance personnel with a more intuitive learning tool. Utility Model Content

[0003] The purpose of this invention is to provide a comprehensive test bench for pneumatic components of special vehicles, so as to overcome the shortcomings of the existing technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A comprehensive test bench for pneumatic components of special vehicles includes a test bench base frame, control components, actuators, power components, monitoring components, and a pipe assembly. The test bench base frame serves as the basic structure, supporting and securing all pneumatic components to ensure their stability and safety during testing. The control components, actuators, power components, and monitoring components are pneumatically connected via the pipe assembly to simulate the working principle of a special vehicle's pneumatic system.

[0006] The control components include a handbrake valve, an increment valve, a pressure regulating valve, a hand relay valve, a foot brake relay valve, and a foot brake pedal assembly. The handbrake valve is used for manual control of the air supply system's exhaust operation. The hand relay valve is connected to the outlet of the spring brake chamber and is linked to the handbrake valve through its exhaust port. The increment valve increases the air pressure signal and transmits it to the diaphragm brake chamber, thereby converting air pressure into mechanical force. The pressure regulating valve is connected to one outlet of the four-pipe protection valve to adjust the pressure value in the air circuit. The foot brake pedal assembly has multiple outlets, which are connected to a dual-needle pressure gauge, the increment valve, and the foot brake relay valve, respectively, to achieve multi-channel control of the air supply system.

[0007] Furthermore, the actuator includes a diaphragm brake chamber and two sets of spring brake chambers. The diaphragm brake chamber receives the air pressure signal transmitted by the increment valve and converts the air pressure into mechanical force to achieve the braking function. The spring brake chambers are connected to the air outlet of the foot brake relay valve and are connected to the air accumulators of the middle and rear wheels through the provided air inlets to ensure the air supply during the braking process.

[0008] Specifically, the power unit includes a parking spare air accumulator, a front wheel air accumulator, and middle and rear wheel air accumulators. The air outlets of the front wheel air accumulator, middle and rear wheel air accumulator, and parking spare air accumulator are all connected to a four-pipe protection valve via air pipes from the pipe assembly. One outlet of the four-pipe protection valve is connected to a pressure regulating valve, and the other outlet is connected to the foot brake pedal assembly, to achieve branch control and protection functions for the air circuit system.

[0009] Furthermore, the monitoring device includes a dual-needle pressure gauge connected via an air outlet of the foot brake pedal assembly, used to display the real-time pressure status of the air circuit system. The dual-needle pressure gauge provides operators with intuitive monitoring data by indicating pressure changes in different air circuits.

[0010] The tubing assembly consists of air tubing and connectors, and their specific connection relationships are as follows:

[0011] S1: The air outlets of the front wheel air tank, the middle and rear wheel air tanks, and the parking spare air tank are connected to the four-pipe protection valve through the air pipes of the pipe assembly.

[0012] S2: One outlet of the four-pipe protection valve is connected to the pressure regulating valve, and the other outlet is connected to the foot brake pedal assembly;

[0013] S3: One air outlet of the foot brake pedal assembly is connected to a dual-needle air pressure gauge, and the other air outlets are connected to the increment valve and the foot brake relay valve, respectively.

[0014] S4: The outlet of the incremental valve is connected to the diaphragm brake chamber;

[0015] S5: The air outlet of the foot brake relay valve is connected to the spring brake air chamber, and the air outlet of the spring brake air chamber is connected to the air inlet of the hand relay valve.

[0016] S6: The exhaust port of the manual relay valve is connected to the hand brake valve.

[0017] The test bench, through the aforementioned connections, enables a comprehensive simulation of the pneumatic system. It not only tests the airtightness of each pipe and component within the pneumatic system but also demonstrates the working principles and interactions of each pneumatic component.

[0018] Furthermore, this invention designs and installs a bracket, arranging pipelines and mounting components on the test bench base platform to completely simulate the working state of the pneumatic system of a special vehicle. The test bench base frame is equipped with fixing holes for mounting the bracket and securing various pneumatic components, ensuring the positional stability and connection reliability of each component during the test.

[0019] In particular, the four-pipe protection valve plays a crucial role in the pneumatic system. Through its branch control and pressure protection functions, it prevents the entire system from failing due to a fault in any one pneumatic path. Furthermore, the foot brake pedal assembly, with its multi-outlet design, achieves synchronous control of the increment valve, foot brake relay valve, and dual-needle pressure gauge, improving the pneumatic system's response speed and ease of operation. Compared with existing technologies, the beneficial effects of this invention are as follows:

[0020] This test bench is used during equipment repair to conduct airtightness tests on various pipelines and components of the air circuit system, to detect and evaluate the quality of the products, which helps to improve the quality of repair products.

[0021] This test bench fully simulates the design of a real vehicle, allowing for a more intuitive observation of the operation of each pneumatic component, and helping repair technicians to fully understand and master the structure and principles of the pneumatic system. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Attached image annotations:

[0024] 1. Test bench base frame; 2. Hand brake valve; 3. Incremental valve; 4. Diaphragm brake chamber; 5. Parking spare air accumulator; 6. Spring brake chamber; 7. Hand relay valve; 8. Dual needle pressure gauge; 9. Foot brake pedal assembly; 10. Pressure regulating valve; 11. Four-pipe protection valve; 12. Front wheel air accumulator; 13. Middle and rear wheel air accumulators; 15. Foot brake relay valve; 16. Pipe assembly. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0029] A comprehensive test bench for pneumatic components of special vehicles, as described below in conjunction with the appendix. Figure 1 The specific embodiments of this utility model will be described in detail below. The overall structure of the test bench is as follows: Figure 1 As shown, it mainly consists of a test bench base frame 1, a handbrake valve 2, an increment valve 3, a diaphragm brake chamber 4, a parking spare air accumulator 5, a spring brake chamber 6, a hand relay valve 7, a dual-needle air pressure gauge 8, a foot brake pedal assembly 9, a pressure regulating valve 10, a four-pipe protection valve 11, a front wheel air accumulator 12, a middle and rear wheel air accumulator 13, a foot brake relay valve 15, and a pipe assembly 16. These components, through reasonable connection relationships and fixing methods, achieve a comprehensive simulation of the pneumatic system of special vehicles.

[0030] The test bench base frame 1 serves as the fundamental structure of the entire test bench, featuring multiple mounting holes for installing brackets and securing various pneumatic components. The base frame 1 is constructed of high-strength steel to ensure it can withstand the weight of the components and the vibrations generated during operation. By arranging pipelines and installing components on the base platform, the test bench fully simulates the working state of a special vehicle's pneumatic system, allowing operators to directly observe the operation of each pneumatic component. The design of the test bench base frame 1 also prioritizes ease of maintenance and adjustment; all components can be quickly disassembled and replaced using bolts or clips.

[0031] The control components include a handbrake valve 2, an increment valve 3, a pressure regulating valve 10, a hand relay valve 7, a foot brake relay valve 15, and a foot brake pedal assembly 9. The handbrake valve 2 is located on one side of the test bench, and its exhaust port is connected to the exhaust port of the hand relay valve 7, used for manually controlling the exhaust operation of the air circuit system. The increment valve 3 is located in the middle of the test bench, and its air inlet is connected to one air outlet of the foot brake pedal assembly 9, while its outlet is connected to the diaphragm brake chamber 4. The function of the increment valve 3 is to receive the air pressure signal from the foot brake pedal assembly 9, and amplify the air pressure signal through an internal pressurization mechanism before transmitting it to the diaphragm brake chamber 4, thereby realizing the conversion of air pressure into mechanical force. The pressure regulating valve 10 is located at one air outlet of the four-pipe protection valve 11, used to regulate the pressure value in the air circuit to meet the needs of different operating conditions. The hand-operated relay valve 7 is located at the outlet of the spring brake chamber 6. Its inlet is connected to the outlet of the spring brake chamber 6, and its outlet is connected to the hand brake valve 2, forming a complete exhaust circuit. The foot brake relay valve 15 is located in the middle of the test bench. Its inlet is connected to the air accumulator 13 of the middle and rear wheels, and its outlet is connected to the spring brake chamber 6, used to control the air supply to the spring brake chamber 6. The foot brake pedal assembly 9 is located in the operating area of ​​the test bench. It has multiple air outlets, which are connected to the dual-needle air pressure gauge 8, the increment valve 3, and the foot brake relay valve 15, respectively, to achieve multi-channel control of the air circuit system.

[0032] The actuators include a diaphragm brake chamber 4 and two sets of spring brake chambers 6. The diaphragm brake chamber 4 is located in the center of the test bench, its inlet connected to the outlet of the increment valve 3. It receives the air pressure signal transmitted by the increment valve 3 and converts it into mechanical force to complete the braking function. The two sets of spring brake chambers 6 are located on both sides of the test bench, their inlets connected to the outlet of the foot brake relay valve 15, and their outlets connected to the inlet of the hand relay valve 7. The function of the spring brake chambers 6 is to achieve the braking function through an internal spring mechanism after receiving the air pressure signal, while simultaneously providing an air source for the hand relay valve 7.

[0033] The power components include a parking backup air tank 5, a front wheel air tank 12, and a middle and rear wheel air tank 13. The air outlets of the parking backup air tank 5, the front wheel air tank 12, and the middle and rear wheel air tank 13 are all connected to a four-pipe protection valve 11 via air pipes from the pipe assembly 16. One outlet of the four-pipe protection valve 11 is connected to a pressure regulating valve 10, and the other outlet is connected to the foot brake pedal assembly 9, to achieve branch control and protection functions for the air circuit system. The parking backup air tank 5 serves as a backup air source, providing continuous air pressure support to the air circuit system when the main air source fails. The front wheel air tank 12 and the middle and rear wheel air tank 13 correspond to the front and middle / rear wheel air circuit systems of the special vehicle, respectively. Through the branch control of the four-pipe protection valve 11, they can independently provide air to pneumatic components in different parts.

[0034] The monitoring component includes a dual-needle pressure gauge 8, which is connected to one outlet of the foot brake pedal assembly 9 to display the real-time pressure status of the pneumatic system. The two pointers of the dual-needle pressure gauge 8 indicate pressure changes in different pneumatic circuits, providing operators with intuitive monitoring data. By observing the readings of the dual-needle pressure gauge 8, operators can determine whether the pneumatic system is functioning properly and promptly identify potential faults.

[0035] The pipe assembly 16 consists of air pipes and connectors, with the following specific connections: the air outlets of the front wheel air tank 12, the middle and rear wheel air tanks 13, and the parking spare air tank 5 are connected to the four-pipe protection valve 11 via the air pipes of the pipe assembly 16; one air outlet of the four-pipe protection valve 11 is connected to the pressure regulating valve 10, and the other air outlet is connected to the foot brake pedal assembly 9; one air outlet of the foot brake pedal assembly 9 is connected to the dual-needle air pressure gauge 8, and the other air outlets are connected to the increment valve 3 and the foot brake relay valve 15, respectively; the air outlet of the increment valve 3 is connected to the diaphragm brake chamber 4; the air outlet of the foot brake relay valve 15 is connected to the spring brake chamber 6, and the air outlet of the spring brake chamber 6 is connected to the air inlet of the hand relay valve 7; the exhaust port of the hand relay valve 7 is connected to the hand brake valve 2. Through the above connections, the test bench achieves a comprehensive simulation of the air circuit system.

[0036] The working principle of the test bench is as follows: During the test, the operator first inputs an air pressure signal to the air circuit system through the foot brake pedal assembly 9. Multiple air outlets of the foot brake pedal assembly 9 are connected to the dual-needle pressure gauge 8, the increment valve 3, and the foot brake relay valve 15, respectively, allowing the air pressure signal to be transmitted synchronously to each component. After receiving the air pressure signal, the increment valve 3 amplifies the signal through its internal pressurization mechanism and transmits it to the diaphragm brake chamber 4. Upon receiving the air pressure signal, the diaphragm brake chamber 4 converts it into mechanical force to complete the braking function. Simultaneously, after receiving the air pressure signal from the foot brake pedal assembly 9, the foot brake relay valve 15 transmits it to the spring brake chamber 6. Upon receiving the air pressure signal, the spring brake chamber 6 uses its internal spring mechanism to achieve the braking function and provides an air source to the hand relay valve 7. Upon receiving the air pressure signal from the spring brake chamber 6, the hand relay valve 7 forms a complete exhaust circuit with the hand brake valve 2 through its exhaust port, thereby realizing manual exhaust operation.

[0037] Throughout the test, the dual-needle pressure gauge 8 displayed the real-time pressure status of the gas circuit system. Operators could determine whether the gas circuit system was functioning properly by observing the reading of the dual-needle pressure gauge 8. In addition, the four-pipe protection valve 11, through its branch control and pressure protection functions, prevented the entire system from failing due to a fault in one gas circuit, thus improving the safety and reliability of the gas circuit system.

[0038] The test bench is primarily used for pneumatic system testing and training during the repair of special vehicles. During repairs, the test bench performs airtightness tests on various pipes and components within the pneumatic system, accurately determining the performance of each component and providing reliable technical support for the repair work. In training, the test bench, through a complete simulation of a real vehicle design, visually demonstrates the operation of each pneumatic component, helping repair technicians fully understand and master the structure and principles of the pneumatic system.

[0039] In summary, this utility model provides a comprehensive test bench for pneumatic components of special vehicles with a reasonable structure and complete functions. Through reasonable connection relationships and precise pressure control, it achieves a comprehensive simulation of the air circuit system. The test bench can not only perform airtightness testing, but also demonstrate the working principle and interaction of each pneumatic component, possessing significant technical advantages and application value.

[0040] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A comprehensive test bench for pneumatic components of special vehicles, characterized in that: It includes a test bench base frame, on which multiple control components, actuators, power components and monitoring components are mounted. The test bench base frame is also equipped with a pipe assembly. The control components, power components, actuators and monitoring components are pneumatically connected to each other through the pipe assembly.

2. The integrated test bench for pneumatic components of special vehicles as described in claim 1, characterized in that: The control components include a handbrake valve, an increment valve, a pressure regulating valve, a hand relay valve, a foot brake relay valve, and a foot brake pedal assembly; the actuators include a diaphragm brake chamber and two sets of spring brake chambers; the power components include a parking spare air accumulator, a front wheel air accumulator, and a middle and rear wheel air accumulator; and the monitoring components include a dual-needle air pressure gauge.

3. The integrated test bench for pneumatic components of special vehicles as described in claim 2, characterized in that: The air outlets of the front wheel air tank, the middle and rear wheel air tanks, and the parking spare air tank are all connected to the four-pipe protection valve through the air pipes of the pipe assembly. One of the air outlets of the four-pipe protection valve is connected to the pressure regulating valve, and the other air outlet of the four-pipe protection valve is connected to the foot brake pedal assembly.

4. The integrated test bench for pneumatic components of special vehicles as described in claim 1, characterized in that: One of the air outlets of the foot brake pedal assembly is connected to a dual-needle air pressure gauge, and the other air outlets of the foot brake pedal assembly are connected to an increment valve and a foot brake relay valve, respectively.

5. A comprehensive test bench for pneumatic components of special vehicles as described in claim 4, characterized in that: The outlet of the incremental valve is connected to the diaphragm brake chamber.

6. The integrated test bench for pneumatic components of special vehicles as described in claim 4, characterized in that: The air outlet of the foot brake relay valve is connected to the spring brake air chamber; the air outlets of the spring brake air chambers are all connected to the air inlets of the hand relay valves, and the hand relay valves are provided with exhaust ports that are connected to the hand brake valves.

7. A comprehensive test bench for pneumatic components of special vehicles as described in claim 6, characterized in that: The foot brake relay valve is also equipped with an air inlet that connects to the air accumulators in the middle and rear wheels.

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