Normally-open electromagnetic heavy vehicle relay valve
By introducing electromagnetic control into the relay valve and adjusting the air pressure using electrical signals, the problem of lag in air pressure braking reaction time in high-speed vehicles is solved, and faster brake response and higher safety are achieved.
Patent Information
- Application Number
- CN202420898298.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The existing relay valves have problems with air pressure braking reaction time lag in long-wheelbase vehicles traveling at high speeds, which cannot effectively ensure driving safety.
The normally open solenoid heavy truck relay valve is adopted to adjust the valve operation through the solenoid valve, and the air pressure is controlled by electrical signals to shorten the reaction time.
It achieves faster brake response, reduces brake distance, greatly reduces accident casualties, and improves driving safety.
Smart Images
Figure CN222224107U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of relay valves, in particular to a normally open electromagnetic heavy vehicle relay valve. Background Art
[0002] The relay valve is part of the automobile air brake system. In the brake system of a truck, the relay valve shortens the reaction time and the pressure build-up time. For example, in the brake system of a trailer or semi-trailer. In the brake system of a truck, the relay valve shortens the reaction time and the pressure build-up time. Generally, a differential relay valve is used. It prevents the simultaneous operation of the driving and parking systems, the overlap of the forces in the combined spring brake cylinder and the spring brake chamber, and thus avoids the overload of the mechanical transmission components, which causes the spring brake cylinder to be quickly filled and exhausted.
[0003] The utility model with announcement number CN218463641U discloses a relay valve, including a valve body, a packaging seat, a control air port, a relay valve plate, an exhaust port and a first air inlet, a control chamber is installed on the surface of the valve body above the first air inlet side, an adjusting cylinder is installed on the internal limit of the control chamber, an opening is provided on the outer surface of the control chamber, and a control mechanism is installed on the opening, a third air outlet is installed on one side of the valve body, the third air outlet is communicated with the control chamber through a through hole, a second air inlet is installed on the surface of the valve body below the third air outlet, a first air outlet is installed on the other side surface of the valve body, and a second air outlet is installed on the rear end surface of the valve body, but the device cannot ensure driving safety well, and there is a problem of delayed reaction time of pneumatic braking for long wheelbase vehicles traveling at high speed. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a normally open electromagnetic heavy vehicle relay valve, which adjusts valve operation through the electromagnetic valve and adjusts through electrical signals, thereby improving braking efficiency and shortening reaction time.
[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a normally open electromagnetic heavy vehicle relay valve, comprising an outer valve body, a cavity is opened in the outer valve body, a fixing plate is installed between the inner walls of the cavity, a through hole is opened on the upper wall of the fixing plate, a piston is provided above the fixing plate, a first spring is provided between the piston and the fixing plate, an adjusting mechanism is provided below the fixing plate, a valve cover is installed on the upper wall of the outer valve body, a solenoid valve is installed on the upper wall of the valve cover, a first vent is opened on the upper wall of the valve cover and below the output end of the solenoid valve, a first connecting pipe is installed on one side wall of the outer valve body, a first input hole is opened in the first connecting pipe, a second connecting pipe is installed on the other side wall of the outer valve body, a second input hole is opened in the second connecting pipe, and three third connecting pipes are installed on both side walls of the outer valve body.
[0006] Preferably, the regulating mechanism comprises an inner valve body, a fixed shell is provided outside the inner valve body, a telescopic rod is provided outside the inner valve body, a second spring is provided outside the telescopic rod, a fixing ring is provided above the inner valve body, and a limiting plate is fixedly installed below the inner valve body via a retaining spring.
[0007] Preferably, output ports are provided in the three pairs of the third connecting pipes, and the three pairs of the output ports are connected to the cavity.
[0008] Preferably, an adjusting bolt is provided outside the second connecting pipe.
[0009] Beneficial Effects
[0010] The utility model provides a normally open electromagnetic heavy vehicle relay valve, which has the following beneficial effects: the utility model has a compact structure. The relay valve is suitable for heavy vehicle braking and highway braking. It is different from the commonly seen normally closed structure on the market and adopts a normally open structure. The electromagnetic control input signal is controlled by an added solenoid valve to adjust the air pressure. The input signal gas is controlled by electronic control, which is much shorter than the signal gas transmitted by pipeline, thereby meeting the requirement of fast response time, greatly shortening the braking distance, reducing the accident casualty rate, and bringing convenience to people. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the internal structure of the utility model;
[0012] Figure 2 It is a schematic diagram of the structure of the utility model.
[0013] In the figure: 1. outer valve body; 2. cavity; 3. fixing plate; 4. through hole; 5. piston; 6. first spring; 7. valve cover; 8. solenoid valve; 9. first vent hole; 10. first connecting pipe; 11. first input hole; 12. second connecting pipe; 13. second input hole; 14. third connecting pipe; 15. inner valve body; 16. fixing shell; 17. telescopic rod; 18. second spring; 19. fixing ring; 20. limit plate; 21. output port. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0015] See also Figure 1-2The utility model provides a technical solution: a normally open electromagnetic heavy vehicle relay valve, comprising an outer valve body 1, a cavity 2 is opened in the outer valve body 1, a fixing plate 3 is installed between the inner walls of the cavity 2, a through hole 4 is opened on the upper wall of the fixing plate 3, a piston 5 is arranged above the fixing plate 3, a first spring 6 is arranged between the piston 5 and the fixing plate 3, an adjusting mechanism is arranged below the fixing plate 3, a valve cover 7 is installed on the upper wall of the outer valve body 1, a solenoid valve 8 is installed on the upper wall of the valve cover 7, a first vent hole 9 is opened on the upper wall of the valve cover 7 and below the output end of the solenoid valve 8, a first connecting pipe 10 is installed on one side wall of the outer valve body 1, a first input hole 11 is opened in the first connecting pipe 10, a second connecting pipe 12 is installed on the other side wall of the outer valve body 1, a second input hole 13 is opened in the second connecting pipe 12, and three third connecting pipes 14 are installed on both side walls of the outer valve body 1.
[0016] Furthermore, the regulating mechanism includes an inner valve body 15, a fixed shell 16 is provided outside the inner valve body 15, a telescopic rod 17 is provided inside the inner valve body 15, a second spring 18 is provided outside the telescopic rod 17, a fixing ring 19 is provided above the inner valve body 15, and a limiting plate 20 is fixedly installed below the inner valve body 15 by a retaining spring.
[0017] Furthermore, the three pairs of the third connecting pipes 14 are each provided with an output port 21 , and the three pairs of the output ports 21 are all connected to the cavity 2 .
[0018] Furthermore, the second connecting pipe 12 is externally provided with an adjusting bolt.
[0019] Embodiment: When the driver steps on the brake pedal, the foot brake master valve generates a brake signal, and the brake electrical signal is given to the solenoid valve 8. The solenoid valve 8 adjusts the piston 5 to move upward, and the gas enters and locks through the first input hole 11 and the first input hole 13. At the same time, the air pressure in the rear air chamber of the brake wheel cylinder is discharged through the third connecting pipe 14, and the high-pressure spring of the wheel cylinder is released, which increases the braking force, greatly shortens the braking distance, and improves the braking efficiency.
[0020] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.
Claims
1. A normally open electromagnetic heavy vehicle relay valve, comprising an outer valve body (1), characterized in that: The outer valve body (1) is provided with a cavity (2), a fixing plate (3) is installed between the inner walls of the cavity (2), a through hole (4) is provided on the upper wall of the fixing plate (3), a piston (5) is provided above the fixing plate (3), a first spring (6) is provided between the piston (5) and the fixing plate (3), an adjustment mechanism is provided below the fixing plate (3), a valve cover (7) is installed on the upper wall of the outer valve body (1), a solenoid valve (8) is installed on the upper wall of the valve cover (7), and the A first vent hole (9) is provided on the upper wall of the valve cover (7) and below the output end of the solenoid valve (8); a first connecting pipe (10) is installed on one side wall of the outer valve body (1), a first input hole (11) is provided in the first connecting pipe (10); a second connecting pipe (12) is installed on the other side wall of the outer valve body (1), a second input hole (13) is provided in the second connecting pipe (12); and three third connecting pipes (14) are installed on both side walls of the outer valve body (1).
2. A normally open electromagnetic heavy vehicle relay valve according to claim 1, characterized in that The regulating mechanism comprises an inner valve body (15), a fixed shell (16) is arranged outside the inner valve body (15), a telescopic rod (17) is arranged inside the inner valve body (15), a second spring (18) is arranged outside the telescopic rod (17), a fixing ring (19) is arranged above the inner valve body (15), and a limit plate (20) is fixedly installed below the inner valve body (15) by a retaining spring.
3. A normally open electromagnetic heavy vehicle relay valve according to claim 1, characterized in that: The three pairs of third connecting pipes (14) are each provided with an output port (21), and the three pairs of output ports (21) are each connected to the cavity (2).
4. A normally open electromagnetic heavy vehicle relay valve according to claim 1, characterized in that: The second connecting pipe (12) is provided with an adjusting bolt outside.