CN209987914U

CN209987914U - General type trailer emergency release valve

Info

Publication number: CN209987914U
Application number: CN201920773818.5U
Authority: CN
Inventors: 张国付
Original assignee: HANDE AUTOMOTIVE PRODUCTS (SUZHOU) CO Ltd
Current assignee: HANDE AUTOMOTIVE PRODUCTS (SUZHOU) CO Ltd; Haldex Vehicle Products Suzhou Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-01-24
Anticipated expiration: 2029-05-27

Abstract

The utility model provides a general trailer emergency release valve, which comprises a shell and a shell cover, wherein a service port, an emergency port, a first detection port and a second detection port are arranged above one side of the shell cover, and a piston assembly is arranged in the second detection port; the utility model has the advantages that the exhaust port is arranged at the bottom of the shell, and the four output ports are arranged around the exhaust port, so that the automobile brake device can be connected to more axles, and the brake of a three-axle or four-axle vehicle can be better satisfied; in addition, the diameters of the first sealing ring and the second sealing ring in the existing piston assembly are increased from 1.8mm to 3mm, so that the sealing performance of the piston in the movement process is enhanced, and the service life of the valve can be prolonged.

Description

General type trailer emergency release valve

Technical Field

The utility model relates to an automobile parts field especially relates to a general type trailer emergency release valve.

Background

When the air leakage of the air charging pipeline of the semitrailer is caused, namely the air charging pressure is lower than the specified air pressure, the semitrailer can automatically and emergently brake, and meanwhile, the brake loop behind the semitrailer does not lose the brake effect. The braking system has the advantages of fast response time and good braking effect, is beneficial to the improvement of the dynamic property and the fuel economy of the train, and can improve the braking strength of the semitrailer particularly under the conditions of long downward slopes and frequent braking.

The existing emergency braking system of the semitrailer has the following problems:

(1) the sealing performance is poor, namely, the sealing structure inside the brake block is damaged quickly under the condition of frequent braking;

(2) because the trailer wheel is more, need to assemble a plurality of emergency brake valves.

Disclosure of Invention

In order to solve the problem, the utility model provides a general type trailer emergency release valve.

The main contents of the utility model include:

a general trailer emergency release valve comprises a shell and a shell cover, wherein a first accommodating cavity provided with a first piston is defined by the shell and the shell cover, a second accommodating cavity is arranged at the lower end in the shell, and the first accommodating cavity is communicated with the second accommodating cavity; the lower end of one side of the shell is provided with an air storage opening which is communicated with the second accommodating cavity; an air outlet is formed in the center of the lower end face of the shell, four output ports are distributed around the air outlet, and the air outlet and the output ports are communicated with the second accommodating cavity; a service port, an emergency port and an adjusting port are formed in the upper portion of one side of the shell cover, and the service port is communicated with a trailer foot brake air path; the emergency port is communicated with a trailer hand brake gas circuit, and a filter screen is arranged in the emergency port; a valve seat is arranged at the connecting port of the second accommodating cavity and the first accommodating cavity; a holding valve seat is arranged in the exhaust port, a guide valve is arranged on the holding valve seat, and a valve seat spring is arranged between the guide valve and the valve seat; set up first detection mouth and second in the regulation mouth and detect the mouth, first detection mouth with urgent mouthful intercommunication, the second detect the mouth with the service mouth with first holding chamber intercommunication, be provided with the check valve in the first detection mouth, be provided with piston assembly in the second detection mouth, first detection mouth through connect the passageway with second holding chamber intercommunication.

Preferably, an adjusting cover is arranged outside the adjusting opening; the piston assembly comprises a second piston, a third piston and a second piston spring, and the second piston spring is arranged in a cavity between the adjusting cover and the adjusting opening and is connected to one end of the second piston; the third piston comprises a third piston body and a third linkage body, the third linkage body is arranged in the linkage through hole of the third piston body and moves back and forth in the linkage through hole, and a linkage spring is arranged between one end, close to the second piston, of the third linkage body and the second piston.

Preferably, a first sealing ring is arranged between the second piston and the inner wall of the second detection port, and a second sealing ring is arranged between the third piston body and the inner wall of the second detection port.

Preferably, the diameter of the first sealing ring and the second sealing ring is 3 mm.

Preferably, the connecting passage comprises a first passage and a second passage, the first passage is arranged on the shell cover, the second passage is arranged on the shell, and a third sealing ring is arranged at the joint of the first passage and the second passage.

Preferably, a sealing gasket is arranged between the retaining valve seat and the guide valve, and a fourth sealing ring is arranged between the retaining valve seat and the inner wall of the exhaust port.

Preferably, an exhaust dustproof assembly is arranged below the retaining valve seat.

Preferably, a first piston spring is arranged on the first piston, and a fifth sealing ring is arranged between the first piston and the inner wall of the housing.

The beneficial effects of the utility model reside in that: the utility model provides a general trailer emergency release valve, which can be connected to more axles by arranging an exhaust port at the bottom of a shell and four output ports around the exhaust port, thereby better meeting the requirements of three-axle or four-axle vehicle brake; in addition, the diameters of the first sealing ring and the second sealing ring in the existing piston assembly are increased from 1.8mm to 3mm, so that the sealing performance of the piston in the movement process is enhanced, and the service life of the valve can be prolonged.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic view of W-W in FIG. 1;

fig. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic view of Z-Z in FIG. 3.

Detailed Description

The technical solution protected by the present invention will be specifically described below with reference to the accompanying drawings.

Please refer to fig. 1 and fig. 4. The utility model provides a general trailer emergency release valve, including casing 1 and cap 2, casing 1 and cap 2 enclose into the first holding chamber 200 that is provided with first piston 40, the lower extreme is provided with second holding chamber 210 in the casing 1 inside, first holding chamber 200 with the second holding chamber 210 intercommunication; an air storage opening 22 is formed in the lower end of one side of the casing 1, and the air storage opening 22 is communicated with the second accommodating cavity 210; an air outlet 20 is formed in the center of the lower end face of the shell 1, four output ports 21 are distributed around the air outlet 20, and the air outlet 20 and the output ports 21 are communicated with the second accommodating cavity 210; a service port 10, an emergency port 11 and an adjusting port are formed in the upper portion of one side of the shell cover 2, and the service port 10 is communicated with a trailer foot brake air path; the emergency port 11 is communicated with a trailer hand brake gas path, and a filter screen 110 is arranged in the emergency port 11; a valve seat 22 is arranged at the connection port of the second accommodating cavity 210 and the first accommodating cavity 200; a holding valve seat 23 is arranged in the exhaust port 20, a guide valve 24 is arranged on the holding valve seat 23, and a valve seat spring 25 is arranged between the guide valve 24 and the valve seat 23; the adjusting port is internally provided with a first detection port 13 and a second detection port 14, the first detection port 13 is communicated with the emergency port 11, the second detection port 14 is communicated with the service port 10 and the first accommodating cavity 200, the first detection port 13 is internally provided with a detection valve 15, the second detection port 14 is internally provided with a piston assembly, and the first detection port 13 is communicated with the second accommodating cavity 210 through a connecting channel.

In one embodiment, an adjusting cover 17 is arranged outside the adjusting opening; the piston assembly comprises a second piston 160, a third piston 161 and a second piston spring 162, wherein the second piston spring 162 is arranged in the cavity between the adjusting cover 17 and the adjusting port and is connected to one end of the second piston 160; the third piston 161 includes a third piston body 1611 and a third linking body 1610, the third linking body 1610 is disposed in a linking through hole 1600 of the third piston body 1611 and moves back and forth in the linking through hole 1600, and a linking spring 1612 is disposed between one end of the third linking body 1610 close to the second piston 160 and the second piston 161; when in a non-braking state, the third linking body 1610 is in communication between the service port 10 and the second detection port 14, that is, one end of the third linking body is located at the communication position between the service port 10 and the second detection port 14, the gas entering from the service port 10 pushes the third linking body 1610 to move toward the second piston 160, so as to press the linking spring 1612, when the foot brake is pressed to increase, the third linking body 1610 pushes the third piston 161 to move toward the second piston 160, so as to cause the second piston 160 to move outward and press the second piston spring 162, so as to cause the inlet area between the second detection port 14 and the first accommodation chamber 200 to be larger, that is, more gas entering into the first accommodation chamber 200, so as to cause the first piston 40 to move downward more, and then to flow to the output port 21 through the gap between the valve seat 22 and the housing 1, since the number of the outlets 21 is four, more axles can be connected, and more vehicle models can be supported.

In one embodiment, the connection channel 30 includes a first channel 31 and a second channel 32, the first channel 31 is opened on the housing cover 2, the second channel 32 is opened on the housing 1, and a third sealing ring 33 is disposed at a connection position of the first channel 31 and the second channel 32, when parking braking is performed, air pressure enters the first detection port 13 from the emergency port 11, the detection valve 15 at the housing cover 2 is opened, then the air flow pushes the first piston 40 to move to open the valve seat 22, and air flows from a gap between the valve seat 22 and the housing 1 to the output port 21.

In order to ensure the sealing performance, a first sealing ring 18 is arranged between the second piston 160 and the inner wall of the second detection port 14, and a second sealing ring 19 is arranged between the third piston body 1611 and the inner wall of the second detection port 14; and the diameters of the first sealing ring 18 and the second sealing ring 19 are 3mm, namely the diameters of the existing sealing rings are increased from 1.8mm to 3mm, so that the sealing performance of the piston assembly in the movement process is enhanced, and the service life of the valve is prolonged.

Further, a packing 26 is provided between the retainer seat 23 and the guide valve 24, and a fourth packing 27 is provided between the retainer seat 23 and the inner wall of the exhaust port 20. An exhaust dust prevention assembly 28 is disposed below the retainer valve seat 23. A first piston spring 41 is disposed on the first piston 40, and a fifth seal ring 42 is disposed between the first piston 40 and the inner wall of the housing 1.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A general trailer emergency release valve is characterized by comprising a shell and a shell cover, wherein a first accommodating cavity provided with a first piston is enclosed by the shell and the shell cover, a second accommodating cavity is arranged at the lower end in the shell, and the first accommodating cavity is communicated with the second accommodating cavity; the lower end of one side of the shell is provided with an air storage opening which is communicated with the second accommodating cavity; an air outlet is formed in the center of the lower end face of the shell, four output ports are distributed around the air outlet, and the air outlet and the output ports are communicated with the second accommodating cavity; a service port, an emergency port and an adjusting port are formed in the upper portion of one side of the shell cover, and the service port is communicated with a trailer foot brake air path; the emergency port is communicated with a trailer hand brake gas circuit, and a filter screen is arranged in the emergency port; a valve seat is arranged at the connecting port of the second accommodating cavity and the first accommodating cavity; a holding valve seat is arranged in the exhaust port, a guide valve is arranged on the holding valve seat, and a valve seat spring is arranged between the guide valve and the valve seat; set up first detection mouth and second in the regulation mouth and detect the mouth, first detection mouth with urgent mouthful intercommunication, the second detect the mouth with the service mouth with first holding chamber intercommunication, be provided with the check valve in the first detection mouth, be provided with piston assembly in the second detection mouth, first detection mouth through connect the passageway with second holding chamber intercommunication.

2. The emergency release valve for a trailer of the utility type as claimed in claim 1, wherein an adjusting cover is provided outside the adjusting port; the piston assembly comprises a second piston, a third piston and a second piston spring, and the second piston spring is arranged in a cavity between the adjusting cover and the adjusting opening and is connected to one end of the second piston; the third piston comprises a third piston body and a third linkage body, the third linkage body is arranged in the linkage through hole of the third piston body and moves back and forth in the linkage through hole, and a linkage spring is arranged between one end, close to the second piston, of the third linkage body and the second piston.

3. The emergency release valve for a trailer as claimed in claim 2, wherein a first sealing ring is arranged between the second piston and the inner wall of the second detection port, and a second sealing ring is arranged between the third piston body and the inner wall of the second detection port.

4. The utility trailer emergency release valve of claim 3, wherein the first and second seal rings have a diameter of 3 mm.

5. The emergency release valve for a trailer of the generic type as defined in claim 1, wherein the connection channel comprises a first channel and a second channel, the first channel is provided on the housing cover, the second channel is provided on the housing body, and a third sealing ring is provided at the junction of the first channel and the second channel.

6. The emergency release valve for a trailer of general type as set forth in claim 1, wherein a sealing gasket is disposed between said retainer valve seat and said pilot valve, and a fourth sealing ring is disposed between said retainer valve seat and an inner wall of said exhaust port.

7. The emergency release valve for a trailer of the general type as claimed in claim 6, wherein an exhaust dust prevention assembly is provided below the retaining valve seat.

8. The emergency release valve for a trailer of general type as set forth in claim 1, wherein said first piston is provided with a first piston spring, and a fifth sealing ring is provided between said first piston and an inner wall of said housing.