Sealing test device for single-cavity air brake valve
By designing a test device that includes a single-chamber pneumatic brake valve body and related components, the problems of complex structure and high cost of existing devices are solved, rapid seal detection is achieved, and manufacturing and testing costs are reduced.
Patent Information
- Application Number
- CN202520372345.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing single-chamber pneumatic brake valve sealing test devices are complex to manufacture, have long testing times, and are costly.
A test device was designed, comprising components such as a single-chamber air brake valve body, foot pedal, air reservoir, piston rod, push rod, return spring, air inlet valve, exhaust port, air inlet chamber, air reservoir, connecting pipe, pressure gauge, and arc-shaped sealing rubber block. Through the combination of air pressure and mechanical structure, rapid sealing detection is achieved.
This technology enables rapid sealing testing of single-chamber pneumatic brake valves, reducing manufacturing and testing costs and improving testing efficiency.
Smart Images
Figure CN223896992U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of brake valve sealing technology, specifically a single-chamber pneumatic brake valve sealing test device. Background Technology
[0002] In vehicle braking systems used in fields such as construction machinery, brake valves are required to achieve vehicle braking. However, in existing technology, air brake valves achieve vehicle braking through air braking. Air braking systems require the pedal to be depressed to output air and achieve braking.
[0003] However, existing single-chamber air brake valve sealing test devices have the following problems during use: traditional vehicle brake valve internal sealing performance testing is complicated in terms of manufacturing structure, long testing time, and relatively high process cost. Utility Model Content
[0004] The purpose of this invention is to provide a single-chamber air brake valve sealing test device to solve the related problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a single-chamber air brake valve sealing test device, comprising a single-chamber air brake valve body, a foot pedal, and an air storage cylinder. The single-chamber air brake valve body has a piston rod inside, and a top rod penetrating the single-chamber air brake valve body is installed at the top of the piston rod. A foot pedal is hinged to the top of the single-chamber air brake valve body, and a roller is mounted below the foot pedal via a sliding rod, contacting the top rod. A return spring is installed inside the single-chamber air brake valve body, located against the side wall of the piston rod. An air inlet valve is located at the bottom of the single-chamber air brake valve body, and an exhaust port is opened at the bottom of the single-chamber air brake valve body. An air inlet cavity is opened on one side of the single-chamber air brake valve body, and an external connecting block is installed on the outer wall of the air inlet cavity. An air storage cylinder is located on one side of the single-chamber air brake valve body, and a shut-off valve is installed at the output pipe of the air storage cylinder. A connecting pipe is installed at the output end of the air storage cylinder, and an external connecting block penetrating the connecting pipe is installed on the outer wall of the air inlet cavity.
[0006] This technical solution provides a single-chamber air brake valve sealing test device, wherein a brake light switch is provided on the side of the single-chamber air brake valve body away from the air inlet cavity.
[0007] This technical solution provides a single-chamber pneumatic brake valve sealing test device, wherein a pressure gauge is installed inside the connecting pipe.
[0008] This technical solution provides a single-chamber air brake valve sealing test device, wherein the connecting pipe has a threaded groove inside, the outer block has a groove on one side, and the inner wall of the threaded groove is provided with a threaded rod that penetrates the outer block and extends into the groove.
[0009] This technical solution provides a single-chamber air brake valve sealing test device, wherein an arc-shaped sealing rubber block is installed on the outer wall of the connecting pipe, and the inner wall of the arc-shaped sealing rubber block is tightly fitted with the inner wall of the air inlet cavity.
[0010] This technical solution provides a single-chamber air brake valve sealing test device, wherein the single-chamber air brake valve body has air outlets at both ends.
[0011] Compared with the prior art, this utility model provides a single-chamber pneumatic brake valve sealing test device, which has the following beneficial effects:
[0012] 1. This utility model delivers 850-900 kPa of air pressure into the air inlet chamber by activating the air storage cylinder. Then, the operator presses the foot pedal to press down the push rod, which squeezes the piston rod. This causes the piston rod to move downwards against the air inlet valve and squeeze the return spring. At this time, the air in the air inlet chamber is discharged from the air outlet, and the air pressure at the air outlet is the same as the internally delivered 850-900 kPa air pressure. When the air pressure at the air outlet is the same as the internally delivered 850-900 kPa air pressure, the single-chamber air brake valve body has a good seal.
[0013] 2. This utility model uses a connecting pipe inserted into the outer block of the outer wall of the air intake cavity, so that the arc-shaped sealing rubber block fits against the inner wall of the air intake cavity, thereby sealing the air intake cavity. The rotating threaded rod engages with the threaded groove, and the threaded rod passes through the groove, quickly connecting the connecting pipe to the air intake cavity, which is convenient for quick testing. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the front sectional view of the present invention;
[0015] Figure 2 For the present utility model Figure 1 A magnified structural diagram at point A;
[0016] Figure 3 This is a top view of the structure of this utility model;
[0017] Figure 4 This is a top sectional view of the intake valve of this utility model.
[0018] In the diagram: 1. Single-chamber air brake valve body; 2. Exhaust port; 3. Intake chamber; 4. Piston rod; 5. Push rod; 6. Return spring; 7. Intake valve; 8. Brake light switch; 9. Foot pedal; 10. Air tank; 11. Shut-off valve; 12. Pressure gauge; 13. Connecting pipe; 14. External block; 15. Threaded groove; 16. Threaded rod; 17. Groove; 18. Arc-shaped sealing rubber block; 19. Air outlet. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Example 1, as Figure 1-2 As shown, this utility model provides a technical solution: a single-chamber air brake valve sealing test device, including a single-chamber air brake valve body 1, a foot pedal 9, and an air storage cylinder 10. A piston rod 4 is disposed inside the single-chamber air brake valve body 1, and a top rod 5 penetrating the single-chamber air brake valve body 1 is installed at the top of the piston rod 4. The foot pedal 9 is hinged to the top of the single-chamber air brake valve body 1, and a roller is disposed below the foot pedal 9 via a sliding rod, contacting the position of the top rod 5. A return spring 6 located on the side wall of the piston rod 4 is disposed inside the single-chamber air brake valve body 1. An air inlet valve 7 is disposed at the bottom of the single-chamber air brake valve body 1, and an exhaust port 2 is opened at the bottom of the single-chamber air brake valve body 1. An air inlet cavity 3 is opened on one side of the single-chamber air brake valve body 1, and an external connecting block 14 is installed on the outer wall of the air inlet cavity 3. An air storage cylinder 10 is disposed on one side of the single-chamber air brake valve body 1, and the air storage cylinder 10... A shut-off valve 11 is installed at the output end of the air tank 10, and a connecting pipe 13 is installed at the output end of the air tank 10. A brake light switch 8 is installed on the side of the single-chamber air brake valve body 1 away from the air inlet cavity 3. A pressure gauge 12 is installed inside the connecting pipe 13. Air outlets 19 are opened at both ends of the single-chamber air brake valve body 1. When the air tank 10 is started, it delivers 850-900 kPa air pressure into the air inlet cavity 3. Then, the operator presses the foot pedal 9 to press down the push rod 5. The push rod 5 then squeezes the piston rod 4, which in turn moves the air inlet valve 7 downward and squeezes the return spring 6. At this time, the air inlet in the air inlet cavity 3 is discharged from the air outlet 19, and the air pressure at the air outlet 19 is the internal delivery air pressure of 850-900 kPa. When the air pressure at the air outlet 19 is the internal delivery air pressure of 850-900 kPa, the single-chamber air brake valve body 1 is well sealed.
[0021] Example 2, as Figure 1-4As shown, this utility model provides a technical solution: a single-chamber air brake valve sealing test device, including an external connecting block 14 installed on the outer wall of the air inlet cavity 3, which penetrates the connecting pipe 13. The connecting pipe 13 has a threaded groove 15 inside, and a groove 17 is provided on one side of the external connecting block 14. A threaded rod 16 is provided on the inner wall of the threaded groove 15, which penetrates the external connecting block 14 and extends into the groove 17. An arc-shaped sealing rubber block 18 is installed on the outer wall of the connecting pipe 13, and the inner wall of the arc-shaped sealing rubber block 18 is tightly fitted with the inner wall of the air inlet cavity 3. By inserting the connecting pipe 13 into the external connecting block 14 on the outer wall of the air inlet cavity 3, the arc-shaped sealing rubber block 18 fits with the inner wall of the air inlet cavity 3, thereby sealing the air inlet cavity 3. The threaded rod 16 engages with the threaded groove 15, and the threaded rod 16 penetrates the groove 17, quickly connecting the connecting pipe 13 to the air inlet cavity 3 for rapid connection.
[0022] Working principle: First, connect the external power supply. The operator can connect the connecting pipe 13 at the air storage cylinder 10 to the air inlet body 3. The connecting pipe 13 can be inserted into the outer block 14 on the outer wall of the air inlet body 3, so that the arc-shaped sealing rubber block 18 fits against the inner wall of the air inlet body 3, thereby sealing the air inlet body 3. The rotating threaded rod 16 engages with the threaded groove 15, and the threaded rod 16 passes through the groove 17, quickly connecting the connecting pipe 13 to the air inlet body 3. The connecting pipe 13 can be inserted into the air outlet 19, and the pressure can be checked through the pressure gauge 12. Regarding the air pressure, at this time, the air storage cylinder 10 is activated to deliver 850-900 kPa of air pressure into the air inlet cavity 3. Then, the operator presses the foot pedal 9 to press down the push rod 5. The push rod 5 then compresses the piston rod 4, which in turn moves the air inlet valve 7 downward and compresses the return spring 6. At this time, the air inlet at the air inlet cavity 3 is discharged from the air outlet 19, and the air pressure at the air outlet 19 is the internally delivered 850-900 kPa air pressure. When the air pressure at the air outlet 19 is the internally delivered 850-900 kPa air pressure, the sealing condition inside the single-chamber air brake valve body 1 is good.
[0023] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.
Claims
1. A single-chamber air brake valve sealing test device, comprising a single-chamber air brake valve body (1), a foot pedal (9), and an air reservoir (10), characterized in that: The single-chamber air brake valve body (1) is internally provided with a piston rod (4), and a top rod (5) penetrating the single-chamber air brake valve body (1) is installed at the top of the piston rod (4). A foot pedal (9) is hinged to the top of the single-chamber air brake valve body (1), and a roller that contacts the position of the top rod (5) is provided below the foot pedal (9) via a sliding rod. A return spring (6) located on the side wall of the piston rod (4) is provided inside the single-chamber air brake valve body (1). An air inlet valve (7) is provided at the bottom of the single-chamber air brake valve body (1). An exhaust port (2) is provided at the bottom end of the air brake valve body (1). An air inlet body (3) is provided on one side of the single-chamber air brake valve body (1), and an external connecting block (14) is installed on the outer wall of the air inlet body (3). An air storage cylinder (10) is provided on one side of the single-chamber air brake valve body (1), and a shut-off valve (11) is provided at the output end pipe of the air storage cylinder (10). A connecting pipe (13) is installed at the output end of the air storage cylinder (10), and an external connecting block (14) that penetrates the connecting pipe (13) is installed on the outer wall of the air inlet body (3).
2. The single-chamber pneumatic brake valve sealing test device according to claim 1, characterized in that: A brake light switch (8) is provided on the side of the single-chamber air brake valve body (1) away from the air intake cavity body (3).
3. The single-chamber pneumatic brake valve sealing test device according to claim 1, characterized in that: A pressure gauge (12) is installed inside the connecting pipe (13).
4. The single-chamber pneumatic brake valve sealing test device according to claim 1, characterized in that: The connecting pipe (13) has a threaded groove (15) inside, and the outer block (14) has a groove (17) on one side. The inner wall of the threaded groove (15) is provided with a threaded rod (16) that penetrates the outer block (14) and extends into the groove (17).
5. The single-chamber pneumatic brake valve sealing test device according to claim 1, characterized in that: The outer wall of the connecting pipe (13) is fitted with an arc-shaped sealing rubber block (18), and the inner wall of the arc-shaped sealing rubber block (18) is tightly fitted with the inner wall of the air inlet cavity (3).
6. The single-chamber pneumatic brake valve sealing test device according to claim 1, characterized in that: The single-chamber air brake valve body (1) has air outlets (19) at both ends.