Electric control air pressure brake valve with measurable valve element displacement

Abstract

The utility model discloses an electric control air pressure brake valve with measurable valve core displacement, and relates to the technical field of vehicle brake equipment. The electromagnetic valve comprises a valve body, an exhaust cavity is formed in the bottom end of the interior of the valve body, a pushing piece is slidably inserted in the center of the interior of the exhaust cavity, an electromagnetic valve body is fixedly connected to the position, close to the top, of the side wall of the valve body, and a supporting block is fixedly connected to the position, located below the electromagnetic valve body, of the side wall of the valve body. An inserting shaft is slidably inserted in the supporting block and close to the center, and the top end of the inserting shaft is fixedly connected with a lifting plate. The electromagnetic valve body is operated, then the air pressure generated by the electromagnetic valve body can be known under the mutual cooperation of the first air channel, the second air channel, the lifting plate, the second spring, the first spring, the pushing piece and the pressure sensor, and therefore the problem that the mode that a piston is controlled to move through air pressure is prone to being influenced by the air pressure is solved. And the brake valve has the problem of response delay.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle brake equipment, in particular to an electrically controlled pneumatic brake valve with measurable valve core displacement. Background Art

[0002] Commercial vehicles generally use a pneumatic system as the underlying braking actuation system. The pneumatic valve is the core component for regulating the wheel cylinder brake air pressure. Its precision and response speed directly impact the stability and speed of the vehicle's braking process. Currently, the electronically controlled pneumatic valve in commercial vehicles uses a solenoid valve to change the air pressure in the control chamber, thereby adjusting the displacement of the relay valve core to achieve switching between intake / exhaust / pressure maintenance states, ultimately achieving wheel cylinder air pressure regulation.

[0003] Conventional pneumatic brake valves use air pressure to drive a piston to slide, which in turn pushes the piston open, allowing compressed air from the air source to enter the air chamber, thereby controlling the operation of the brake pads and achieving braking. However, this method of controlling piston movement through air pressure is easily affected by air pressure, resulting in a response delay in the brake valve. To address this issue, the inventors have proposed an electrically controlled pneumatic brake valve with measurable valve core displacement to address this problem. Utility Model Content

[0004] In order to solve the problem that the movement of the air pressure-controlled piston is easily affected by the air pressure, and the brake valve may have a response delay, the purpose of the utility model is to provide an electrically controlled air pressure brake valve with a measurable valve core displacement.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: an electrically controlled pneumatic brake valve with measurable valve core displacement, comprising a valve body, an exhaust chamber is opened at the bottom end of the valve body, a push piece is slidably inserted in the center of the exhaust chamber, the side wall of the valve body is fixedly connected to the solenoid valve body near the top, a support block is fixedly connected to the side wall of the valve body and located below the solenoid valve body, an insertion shaft is slidably inserted in the support block near the center, the top of the insertion shaft is fixedly connected to a lifting plate, the center of the side end of the support block and near the top is fixedly connected to support plate three, a piston cylinder is provided in the interior of support plate three, and the piston cylinder is located above the push piece, a piston rod is provided in the inner cavity of the piston cylinder, and a support plate four is fixedly connected to the top of the lifting plate and located above support plate three, and the top of the piston rod is fixedly connected to support plate four.

[0006] Preferably, the bottom end of the lifting plate is fixedly connected to spring 2, and the bottom end of spring 2 is fixedly connected to the support block. Spring 2 is sleeved on the outer ring of the plug-in shaft. A pressure sensor is fixedly connected to the top of the support block near the center, and the pressure sensor is located below the lifting plate.

[0007] Preferably, a force block is fixedly connected to the center of the top of the lifting plate, and a support plate 1 is fixedly connected to the side wall of the valve body and located below the solenoid valve body. An air channel 1 is provided inside the support plate 1, and the air channel 1 is at the same level as the solenoid valve body.

[0008] Preferably, the side wall of the valve body is fixedly connected to support plate 2 below support plate 1, the outer ring of air channel 1 is slidably inserted with air channel 2, and air channel 2 is slidably connected to the inside of support plate 2, and the force block is at the same level as air channel 2.

[0009] Preferably, a telescopic guide rod is fixedly connected to the top of the pushing member near the center, and the top of the telescopic guide rod is fixedly connected to the valve body, a spring 1 is sleeved on the top of the pushing member and fixedly connected to the outer ring of the telescopic guide rod, and the top of the spring 1 is fixedly connected to the valve body, an air inlet is fixedly connected to the side end of the valve body and located at the exhaust chamber, and an air outlet is fixedly connected to the other side end of the valve body and located at the exhaust chamber.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] In the utility model, the solenoid valve body is operated, and then the air channel 1 and the air channel 2 and the lifting plate, the spring 2, the spring 1, the push piece and the pressure sensor cooperate with each other, so that the air pressure generated by the solenoid valve body can be known, thereby solving the problem that the movement of the air pressure-controlled piston is easily affected by the size of the air pressure, and the brake valve will have a response delay. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the valve body of the present utility model.

[0015] Figure 3 This is a schematic diagram of the exhaust chamber structure of the utility model.

[0016] Figure 4 For this utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] In the figure: 1. Valve body; 11. Air outlet; 12. Air inlet; 13. Exhaust chamber; 14. Push member; 15. Telescopic guide rod; 16. Spring 1; 2. Solenoid valve body; 21. Support plate 1; 22. Air duct 1; 23. Support plate 2; 24. Air duct 2; 25. Support block; 26. Insert shaft; 27. Spring 2; 28. Lifting plate; 29. Force block; 3. Support plate 3; 31. Piston cylinder; 32. Support plate 4; 33. Piston rod; 34. Pressure sensor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example: Figure 1-4 As shown, the utility model provides a technical solution: an electrically controlled pneumatic brake valve with measurable valve core displacement, comprising a valve body 1, an exhaust chamber 13 is opened at the bottom end of the valve body 1, a push piece 14 is slidably inserted in the center of the exhaust chamber 13, a solenoid valve body 2 is fixedly connected to the side wall of the valve body 1 near the top, a support block 25 is fixedly connected to the side wall of the valve body 1 and located below the solenoid valve body 2, an insert shaft 26 is slidably inserted in the support block 25 near the center, a lifting plate 28 is fixedly connected to the top of the insert shaft 26, a support plate three 3 is fixedly connected to the center of the side end of the support block 25 and near the top, a piston cylinder 31 is provided inside the support plate three 3, and the piston cylinder 31 is located above the push piece 14, a piston rod 33 is provided in the inner cavity of the piston cylinder 31, a support plate four 32 is fixedly connected to the top of the lifting plate 28 and located above the support plate three 3, and the top of the piston rod 33 is fixedly connected to the support plate four 32.

[0020] The bottom end of the lifting plate 28 is fixedly connected to a spring 27 , and the bottom end of the spring 27 is fixedly connected to the support block 25 , and the spring 27 is sleeved on the outer ring of the insertion shaft 26 .

[0021] By adopting the above technical solution, a second spring 27 is provided at the bottom end of the lifting plate 28 in order to achieve the work of resetting the support plate 4 32.

[0022] A pressure sensor 34 is fixedly connected to the top of the support block 25 and near the center, and the pressure sensor 34 is located below the lifting plate 28 .

[0023] By adopting the above technical solution, a pressure sensor 34 is provided on the top of the support block 25 in order to prevent the air pressure from being too high or too low.

[0024] A force-bearing block 29 is fixedly connected to the center of the top end of the lifting plate 28 .

[0025] By adopting the above technical solution, a force-bearing block 29 is provided on the top of the lifting plate 28 in order to be able to drive the lifting plate 28 to move up and down.

[0026] A support plate 21 is fixedly connected to the side wall of the valve body 1 and located below the solenoid valve body 2. An air channel 22 is provided inside the support plate 21, and the air channel 22 is at the same level as the solenoid valve body 2.

[0027] By adopting the above technical solution, an air channel 22 is provided below the solenoid valve body 2 in order to concentrate the air pressure above the force-bearing block 29 .

[0028] A support plate 2 23 is fixedly connected to the side wall of the valve body 1 and located below the support plate 1 21 , and an air channel 2 24 is slidably inserted into the outer ring of the air channel 1 22 , and the air channel 2 24 is slidably connected to the inside of the support plate 2 23 , and the force block 29 is at the same level as the air channel 2 24 .

[0029] By adopting the above technical solution, the second wind channel 24 is provided below the first wind channel 22 in order to concentrate the air pressure above the force-bearing block 29 .

[0030] A telescopic guide rod 15 is fixedly connected to the top of the pushing member 14 near the center, and the top of the telescopic guide rod 15 is fixedly connected to the valve body 1. A spring 16 is fixedly connected to the top of the pushing member 14 and sleeved on the outer ring of the telescopic guide rod 15, and the top of the spring 16 is fixedly connected to the valve body 1.

[0031] By adopting the above technical solution, a telescopic guide rod 15 is provided at the top of the pushing member 14 in order to realize the lifting and lowering of the pushing member 14 .

[0032] An air inlet 12 is fixedly connected to one side end of the valve body 1 and located at the exhaust cavity 13 , and an air outlet 11 is fixedly connected to the other side end of the valve body 1 and located at the exhaust cavity 13 .

[0033] By adopting the above technical solution, the air inlet 12 and the air outlet 11 are provided at the side end of the valve body 1 in order to achieve the effect of braking the brake pad.

[0034] Working principle: When the device is in use, the pressurized gas of the air source will first enter the exhaust chamber 13 through the air inlet 12, and then be discharged into the air chamber through the air outlet 11, thereby realizing the braking of the vehicle. By running the solenoid valve body 2, the air flow will pass through the air channel 1 22 and the air channel 2 24 to impact the force block 29, thereby causing the lifting plate 28 to move downward and squeeze the spring 2 27, thereby causing the support plate 4 32 to drive the piston rod 33 to move downward inside the piston cylinder 31, so that the push piece 14 can move downward under the action of the spring 1 16 and the telescopic guide rod 15, thereby achieving the effect of blocking the exhaust chamber 13, thereby preventing the air source from entering the air chamber from the air outlet 11. At this time, the braking of the vehicle will be released. By setting the pressure sensor 34, the high and low air pressure generated by the solenoid valve body 2 can be known, thereby solving the problem that the way the air pressure controls the movement of the piston is easily affected by the air pressure, and the brake valve will have a response delay.

[0035] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An electrically controlled pneumatic brake valve with measurable valve core displacement, comprising a valve body (1), characterized in that: The bottom end of the valve body (1) is provided with an exhaust chamber (13), and a push piece (14) is slidably inserted in the center of the exhaust chamber (13). The side wall of the valve body (1) is fixedly connected to the electromagnetic valve body (2) near the top. The side wall of the valve body (1) is fixedly connected to the electromagnetic valve body (2). The support block (25) is slidably inserted with an insert shaft (26) near the center inside the support block (25). The top of the insert shaft (26) is fixedly connected to a lifting plate (28). The center of the side end of the support block (25) is fixedly connected to a support plate three (3) near the top. A piston cylinder (31) is provided in the interior of the support plate three (3), and the piston cylinder (31) is located above the push piece (14). A piston rod (33) is provided in the inner cavity of the piston cylinder (31). The top of the lifting plate (28) is fixedly connected to a support plate four (32) above the support plate three (3), and the top of the piston rod (33) is fixedly connected to the support plate four (32).

2. The electrically controlled pneumatic brake valve with measurable valve core displacement according to claim 1, characterized in that: The bottom end of the lifting plate (28) is fixedly connected to a spring 2 (27), and the bottom end of the spring 2 (27) is fixedly connected to the support block (25), and the spring 2 (27) is sleeved on the outer ring of the insertion shaft (26).

3. The electrically controlled pneumatic brake valve with measurable valve core displacement according to claim 1, characterized in that: A pressure sensor (34) is fixedly connected to the top of the support block (25) and near the center, and the pressure sensor (34) is located below the lifting plate (28).

4. The electrically controlled pneumatic brake valve with measurable valve core displacement according to claim 1, characterized in that: A force-bearing block (29) is fixedly connected to the center of the top end of the lifting plate (28).

5. The electrically controlled pneumatic brake valve with measurable valve core displacement according to claim 4, characterized in that: A support plate 1 (21) is fixedly connected to the side wall of the valve body (1) and is located below the solenoid valve body (2). An air channel 1 (22) is provided inside the support plate 1 (21), and the air channel 1 (22) is at the same level as the solenoid valve body (2).

6. The electrically controlled pneumatic brake valve with measurable valve core displacement according to claim 5, characterized in that: The side wall of the valve body (1) is fixedly connected to the support plate 2 (23) below the support plate 1 (21), the outer ring of the air channel 1 (22) is slidably inserted with the air channel 2 (24), and the air channel 2 (24) is slidably connected to the inside of the support plate 2 (23), and the force block (29) is at the same level as the air channel 2 (24).

7. The electrically controlled pneumatic brake valve with measurable valve core displacement according to claim 1, characterized in that: The top of the pushing member (14) is fixedly connected to a telescopic guide rod (15) near the center, and the top of the telescopic guide rod (15) is fixedly connected to the valve body (1). The top of the pushing member (14) is fixedly connected to a spring (16) sleeved on the outer ring of the telescopic guide rod (15), and the top of the spring (16) is fixedly connected to the valve body (1).

8. The electrically controlled pneumatic brake valve with measurable valve core displacement according to claim 1, characterized in that: An air inlet (12) is fixedly connected to a side end of the valve body (1) and located at the exhaust cavity (13), and an air outlet (11) is fixedly connected to the other side end of the valve body (1) and located at the exhaust cavity (13).

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