CN210502651U

CN210502651U - Commercial vehicle binary channels ABS front axle brake module assembly

Info

Publication number: CN210502651U
Application number: CN201921116263.3U
Authority: CN
Inventors: 周威力; 巨建辉; 冷彪; 邹伟; 刘永传; 柳帅; 刘森磊; 管仁梅
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Qingdao Automobile Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-05-12
Anticipated expiration: 2029-07-16

Abstract

The utility model provides a commercial vehicle binary channels ABS front axle brake module assembly, including a middle valve body and two ABS solenoid valves that the structure is the same, two ABS solenoid valves are the left side ABS solenoid valve that sets up at the middle valve body and the right side ABS solenoid valve that sets up on the middle valve body right side, there is the exhaust silencer below the middle valve body, middle valve body upper portion is provided with the air inlet, the left side of middle valve body is provided with the left side gas outlet with left side ABS solenoid valve intercommunication, the right side of middle valve body is provided with the side gas outlet with right side ABS solenoid valve intercommunication, middle valve body lower part is provided with the gas vent with exhaust silencer intercommunication; the utility model discloses can realize the anti-lock function of front axle left and right wheel ABS braking, can effectively save the assembly space, conveniently put in order car spare part and arrange, because valve body high integration can simplify the tube coupling technology, improve assembly efficiency and must improve the braking system gas tightness simultaneously, reduce weight and cost, two solenoid valves can be dismantled alone, convenient maintenance and maintenance.

Description

Commercial vehicle binary channels ABS front axle brake module assembly

Technical Field

The invention relates to the technical field of commercial vehicle air brake systems, in particular to a commercial vehicle double-channel ABS front axle brake module assembly.

Background

An ABS System is called an Anti-lock Brake System in the whole, and an Anti-lock Brake System is called in Chinese, and the Anti-lock Brake System is a safety control System which is used for preventing wheels from being locked completely in the braking process of an automobile, improving the direction stability and steering control capability of the automobile in the braking process and shortening the braking distance. The ABS solenoid valve is an actuator in an ABS system, and is generally used for each of the left and right wheels of a front axle of a commercial vehicle.

The front axle ABS electromagnetic valve in the prior art generally has two technical schemes. One technical scheme is that two ABS electromagnetic valves are adopted and are dispersedly arranged on a frame longitudinal beam at a position close to a brake chamber. The technical scheme has the problems of large quantity of parts, complex pipeline trend, more leakage risk points and low assembly efficiency. The other technical scheme is that two ABS electromagnetic valves are combined through a transition joint and are arranged on a front cross beam. The technical scheme has larger volume and poorer integration level.

Disclosure of Invention

In order to overcome the shortcoming of above-mentioned prior art, the utility model provides a commercial vehicle binary channels ABS front axle brake module assembly, technical scheme is as follows:

a commercial vehicle double-channel ABS front axle brake module assembly is characterized by comprising a middle valve body and two ABS electromagnetic valves with the same structure, wherein the two ABS electromagnetic valves are a left ABS electromagnetic valve arranged on the left side of the middle valve body and a right ABS electromagnetic valve arranged on the right side of the middle valve body;

the middle valve body is internally provided with an air inlet ring groove, two groups of air inlet channels, two air outlet ring grooves, two exhaust channels and two air outlet channels, the air inlet ring groove is communicated with an air inlet, the two exhaust channels are communicated with an exhaust port, and a pressure maintaining diaphragm mechanism for controlling the communication or disconnection of the air inlet ring groove and each group of air inlet channels is arranged between the air inlet ring groove and each group of air inlet channels; the two groups of air inlet channels are respectively communicated with one air outlet ring groove, each air outlet ring groove is communicated with one air outlet channel, each air outlet ring groove is also communicated with one air outlet channel, and the two air outlet channels are respectively communicated with the left air outlet and the right air outlet; a pressure reduction diaphragm mechanism for controlling the communication or disconnection between the exhaust channel and the corresponding air outlet ring groove is arranged between each exhaust channel and the corresponding air outlet ring groove; the pressure maintaining passage used for controlling the pressure maintaining diaphragm mechanism is arranged between the air inlet ring groove and the pressure maintaining diaphragm mechanism, the pressure maintaining solenoid valve in the ABS solenoid valve is arranged on the pressure maintaining passage and used for controlling the communication or disconnection of the pressure maintaining passage, the pressure reducing passage used for controlling the pressure reducing diaphragm mechanism is arranged between the air inlet ring groove and the pressure reducing diaphragm mechanism, the pressure reducing solenoid valve in the ABS solenoid valve is arranged on the pressure reducing passage and used for controlling the communication or disconnection of the pressure reducing passage, wherein the pressure maintaining solenoid valve is normally opened, the pressure reducing solenoid valve is normally closed, the air inlet is connected with the air outlet of the external brake valve, the left air outlet is connected with the left brake air chamber of the outside, and the right air outlet.

The further technical scheme comprises the following steps:

each group of air inlet channels in the middle valve body are formed by communicating a first air inlet channel and a second air inlet channel, the air inlet ring groove is communicated with the first air inlet channel, and the second air inlet channel is communicated with the air outlet ring groove;

the ABS electromagnetic valve comprises a pressure maintaining electromagnetic valve, a pressure reducing electromagnetic valve, a bottom plate assembly, a connector assembly and a shell, wherein the connector assembly is connected with an external whole vehicle ABS controller and controls the pressure maintaining electromagnetic valve and the pressure reducing electromagnetic valve to be connected; the part of the shell, which is close to one side of the middle valve body, is a shell back plate, and the plug-in connector assembly, the pressure maintaining electromagnetic valve and the pressure reducing electromagnetic valve are sealed in the shell together; the shell back plate and the bottom plate assembly are connected with the middle valve body through bolts, and the bottom plate assembly is positioned between the shell back plate and the middle valve body;

the pressure maintaining electromagnetic valve is formed by sequentially connecting a pressure maintaining electromagnetic valve plug cover, a pressure maintaining valve, a pressure maintaining movable iron core spring, a pressure maintaining movable iron core, a pressure maintaining coil winding and a pressure maintaining static iron core, and the pressure reducing electromagnetic valve is formed by sequentially connecting a pressure reducing electromagnetic valve plug cover, a pressure reducing valve, a pressure reducing movable iron core spring, a pressure reducing movable iron core, a pressure reducing coil winding and a pressure reducing static iron core;

the bottom plate assembly comprises a bottom plate, a pressure maintaining diaphragm mechanism and a pressure reducing diaphragm mechanism, a plurality of sunken special-shaped grooves are formed in the surface, close to the shell back plate, of the bottom plate, the bottom plate is attached to the shell back plate, and a plurality of special-shaped channels are formed between the special-shaped grooves and the shell back plate;

the pressure maintaining diaphragm mechanism comprises a pressure maintaining diaphragm and a pressure maintaining diaphragm spring, the pressure reducing diaphragm mechanism comprises a pressure reducing diaphragm and a pressure reducing diaphragm spring, and the pressure maintaining diaphragm and the pressure reducing diaphragm are both arranged between the bottom plate and the middle valve body;

a cavity between the pressure maintaining diaphragm and the bottom plate forms a pressure maintaining diaphragm acting cavity, and a pressure maintaining diaphragm spring is arranged between the pressure maintaining diaphragm and the bottom plate; a cavity between the pressure reducing diaphragm and the bottom plate forms a pressure reducing diaphragm acting cavity, and the pressure reducing diaphragm spring is arranged between the pressure reducing diaphragm and the bottom plate; the pressure maintaining membrane is arranged between the air inlet ring groove and the first air inlet channel and is used for controlling the communication or disconnection of the air inlet ring groove and the first air inlet channel; the pressure reduction membrane is arranged between the exhaust channel and the air outlet channel and is used for controlling the connection or disconnection of the exhaust channel and the air outlet channel;

the pressure maintaining passage comprises a pressure maintaining air inlet passage of the ABS electromagnetic valve and a pressure maintaining air outlet passage of the ABS electromagnetic valve; the pressure reducing passage comprises a pressure reducing air inlet passage of the ABS electromagnetic valve and a pressure reducing air outlet passage of the ABS electromagnetic valve;

the pressure maintaining air inlet passage of the ABS electromagnetic valve comprises a pressure maintaining air inlet channel, a first pressure maintaining air inlet, a second pressure maintaining air inlet, a third pressure maintaining air inlet, a fourth pressure maintaining air inlet, a fifth pressure maintaining air inlet, a sixth pressure maintaining air inlet, a seventh pressure maintaining air inlet and an eighth pressure maintaining air inlet which are sequentially communicated; the pressure maintaining air inlet channel is communicated with the air inlet ring groove, the first pressure maintaining air inlet is communicated with the second pressure maintaining air inlet through a special-shaped channel, the seventh pressure maintaining air inlet is communicated with the eighth pressure maintaining air inlet through a special-shaped channel, and the eighth pressure maintaining air inlet is communicated with the pressure maintaining diaphragm action cavity;

the decompression air inlet passage of the ABS electromagnetic valve comprises a first decompression air inlet, a second decompression air inlet, a third decompression air inlet, a fourth decompression air inlet, a fifth decompression air inlet, a sixth decompression air inlet and a seventh decompression air inlet which are communicated in sequence; the first decompression inlet and the first pressure-maintaining inlet are communicated through a special-shaped channel, the sixth decompression inlet and the seventh decompression inlet are communicated through a special-shaped channel, and the seventh decompression inlet is communicated with the decompression membrane acting cavity;

the pressure maintaining exhaust passage of the ABS electromagnetic valve comprises a first pressure maintaining exhaust port, a second pressure maintaining exhaust port and a pressure maintaining and reducing common exhaust port which are sequentially communicated; the second pressure maintaining exhaust port is communicated with the pressure maintaining and reducing common exhaust port through a special-shaped channel;

the pressure reducing exhaust passage of the ABS electromagnetic valve comprises a first pressure reducing exhaust port, a second pressure reducing exhaust port, a third pressure reducing exhaust port and a pressure maintaining and reducing common exhaust port which are sequentially communicated; the third pressure-reducing exhaust port is communicated with the pressure-maintaining pressure-reducing common exhaust port through a special-shaped channel, and the pressure-maintaining pressure-reducing common exhaust port is communicated with the exhaust port through an internal channel of the middle valve body;

the pressure maintaining valve controls the connection and disconnection of the fourth pressure maintaining air inlet and the fifth pressure maintaining air inlet, and the pressure maintaining movable iron core controls the connection and disconnection of the fifth pressure maintaining air inlet and the first pressure maintaining exhaust port;

and the decompression valve controls the connection and disconnection of the first decompression exhaust port and the fourth decompression air inlet, and the decompression movable iron core controls the connection and disconnection of the fourth decompression air inlet and the third decompression air inlet.

And special-shaped sealing rings for strengthening sealing are arranged in a special-shaped channel between the first pressure-maintaining air inlet and the second pressure-maintaining air inlet, a special-shaped channel between the seventh pressure-maintaining air inlet and the eighth pressure-maintaining air inlet, a special-shaped channel between the middle pressure-reducing air inlet and the first pressure-maintaining air inlet, a special-shaped channel between the fifth pressure-reducing air inlet and the sixth pressure-reducing air inlet, and a special-shaped channel between the third pressure-reducing air outlet and the pressure-maintaining pressure-reducing common air outlet.

The plug assembly comprises a plug grounding end, a pressure maintaining electromagnetic valve control end and a pressure reducing electromagnetic valve control end, wherein the pressure maintaining electromagnetic valve control end is connected with a pressure maintaining coil winding in the pressure maintaining electromagnetic valve and controls the pressure maintaining electromagnetic valve, the pressure reducing electromagnetic valve control end is connected with a pressure reducing coil winding in the pressure reducing electromagnetic valve and controls the pressure reducing electromagnetic valve, and the plug grounding end, the pressure maintaining electromagnetic valve control end and the pressure reducing electromagnetic valve control end all extend out of the shell from the inside of the shell.

The pressure maintaining air inlet channel is arranged inside the middle valve body;

a third pressure maintaining air inlet, a sixth pressure maintaining air inlet, a second pressure reducing air inlet, a fifth pressure reducing air inlet, a second pressure maintaining air outlet and a second pressure reducing air outlet are formed in the outer surface of the shell back plate;

the fourth pressure maintaining air inlet, the fifth pressure maintaining air inlet, the third pressure reducing air inlet, the fourth pressure reducing air inlet, the first pressure maintaining exhaust port and the first pressure reducing exhaust port are arranged on the inner surface of the shell back plate;

a first pressure-maintaining air inlet, a second pressure-maintaining air inlet, a seventh pressure-maintaining air inlet, an eighth pressure-maintaining air inlet, a first pressure-reducing air inlet, a sixth pressure-reducing air inlet, a seventh pressure-reducing air inlet, a third pressure-reducing air outlet and a pressure-maintaining pressure-reducing common air outlet are arranged on the bottom plate 231;

the first pressure-maintaining exhaust port and the second pressure-maintaining exhaust port are respectively two ports of the same through hole in the shell backboard, and the first pressure-reducing exhaust port and the second pressure-reducing exhaust port are respectively two ports of the same through hole in the shell backboard;

after the shell back plate and the bottom plate assembly are attached and mounted, the third pressure maintaining air inlet is opposite to the second pressure maintaining air inlet and communicated with each other, the sixth pressure maintaining air inlet is opposite to the seventh pressure maintaining air inlet and communicated with each other, the second pressure reducing air inlet is opposite to the first pressure reducing air inlet and communicated with each other, the fifth pressure reducing air inlet is opposite to the sixth pressure reducing air inlet and communicated with each other, the second pressure maintaining air outlet is aligned to a special-shaped channel between the third pressure reducing air outlet and the pressure maintaining pressure reducing public air outlet and communicated with the special-shaped channel, and the second pressure reducing air outlet is opposite to the third pressure reducing air outlet and.

The pressure maintaining valve is provided with a pressure maintaining valve groove which can communicate the fourth pressure maintaining air inlet with the fifth pressure maintaining air inlet along the axis direction, the outer side of the pressure maintaining movable iron core is provided with a rectangular groove, the axis of the pressure maintaining static iron core is provided with a hollow channel, and the hollow channel of the pressure maintaining static iron core is communicated with the first pressure maintaining exhaust port all the time; when the pressure maintaining movable iron core moves to a position close to one side of the pressure maintaining valve, the rear end face of the pressure maintaining movable iron core blocks an opening of a pressure maintaining valve groove close to one side of a fifth pressure maintaining air inlet, the pressure maintaining valve is closed, the communication between a fourth pressure maintaining air inlet and the fifth pressure maintaining air inlet is disconnected, the front end face of the pressure maintaining movable iron core leaves the rear end face of the pressure maintaining static iron core, a hollow channel of the pressure maintaining static iron core is communicated with a rectangular groove of the pressure maintaining movable iron core, and the fifth pressure maintaining air inlet is communicated with a first pressure maintaining exhaust port through the rectangular groove of the pressure maintaining movable iron core and the hollow channel of the pressure maintaining static iron core; when the pressure maintaining movable iron core moves to a position far away from one side of the pressure maintaining valve, the rear end face of the pressure maintaining movable iron core leaves the opening, close to one side of the fifth pressure maintaining air inlet, of the pressure maintaining valve groove, the pressure maintaining valve is opened, the fourth pressure maintaining air inlet is communicated with the fifth pressure maintaining air inlet, the rear end face of the pressure maintaining movable iron core is attached to the front end face of the pressure maintaining static iron core and blocks the opening, close to one side of the pressure maintaining movable iron core, of the hollow channel of the pressure maintaining static iron core, the communication between the rectangular groove of the pressure maintaining movable iron core and the hollow channel of the pressure maintaining static iron core is disconnected, and the communication between the fifth pressure maintaining air inlet and the first;

the pressure reducing valve is provided with a pressure reducing valve groove which can communicate the first pressure reducing exhaust port with the fourth pressure reducing air inlet along the axis direction, the outer side of the pressure reducing movable iron core is provided with a rectangular groove, the axis of the pressure reducing static iron core is provided with a hollow channel, and the hollow channel of the pressure reducing static iron core is communicated with the third pressure reducing air inlet all the time; when the pressure-reducing movable iron core moves to one side close to the pressure-reducing valve, the rear end face of the pressure-reducing movable iron core blocks the opening of the pressure-reducing valve groove close to one side of the fourth pressure-reducing air inlet, the pressure-reducing valve is closed, the communication between the first pressure-reducing air outlet and the fourth pressure-reducing air inlet is disconnected, the front end face of the pressure-reducing movable iron core leaves the rear end face of the pressure-reducing static iron core, the hollow channel of the pressure-reducing static iron core is communicated with the rectangular groove of the pressure-reducing movable iron core, and the third pressure-reducing air inlet is communicated with the fourth pressure-reducing air inlet through the rectangular; when the iron core is moved to moving to keeping away from decompression valve one side in the decompression, the rear end face that the iron core was moved in the decompression leaves the opening that decompression valve slot is close to fourth decompression air inlet one side, the decompression valve is opened, communicate between first decompression gas vent and the fourth decompression air inlet, the preceding terminal surface that the iron core was moved in the decompression and the laminating of the rear end face of the quiet iron core of decompression and the cavity passageway that blocks the quiet iron core of decompression are close to the opening that the iron core one side was moved in the decompression, the intercommunication between the rectangle slot that the iron core was moved in the decompression and the cavity passageway of the quiet iron core of decompression is broken off, the intercommunication between third decompression air inlet.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a pair of commercial vehicle binary channels ABS front axle brake module assembly, because the utility model discloses a setting of gas circuits such as various air inlets, gas outlet, gas vent and whole gas inlets, the exhaust of giving vent to anger has carried out high integrated optimization with two ABS solenoid valves, so can effectively reduce spare part quantity, reduce whole car cost and weight, improve assembly efficiency simultaneously. Owing to adopt the utility model discloses can reduce whole car braking system tube coupling, so can effectively reduce the coupling and leak the risk point, improve the gas tightness. Because the utility model discloses a structure allows the inside latus rectum of ABS solenoid valve that sets up bigger, so the utility model discloses can improve whole car braking system response speed.

Drawings

The invention will be further described with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of an external structure of a dual-channel ABS front axle brake module assembly for a commercial vehicle according to the present invention;

fig. 2 is the utility model discloses a structural schematic of commercial vehicle binary channels ABS front axle brake module assembly.

FIG. 3 is a schematic structural diagram of the inside of the housing of the ABS solenoid valve in the dual-channel ABS front axle brake module assembly of a commercial vehicle according to the present invention as shown in the sectional view A-A of FIG. 2;

fig. 4 a structural schematic diagram of the gas circuit in left side ABS solenoid valve and the middle valve body in the commercial vehicle binary channels ABS front axle brake module assembly.

FIG. 5 is a schematic structural view of the air ports on the outer surface of the housing back plate of the ABS solenoid valve in the dual-channel ABS front axle brake module assembly for a commercial vehicle according to the present invention;

fig. 6 is a schematic structural diagram of a bottom plate component in an ABS solenoid valve in a dual-channel ABS front axle brake module assembly of a commercial vehicle according to the present invention;

in the figure: 1. the pressure-maintaining electromagnetic valve comprises a middle valve body, 2, a left ABS electromagnetic valve, 3, a right ABS electromagnetic valve, 4, an exhaust silencer, 11, an air inlet, 13, an exhaust port, 121, a left air outlet, 122, a right air outlet, 201, a pressure-maintaining electromagnetic valve, 202, a pressure-reducing electromagnetic valve, 203, a bottom plate assembly, 204, a connector assembly, 205, a shell, 206, a shell back plate 211, a plug cover, 212, a pressure-maintaining valve, 213, a pressure-maintaining movable iron core spring, 214, a pressure-maintaining movable iron core, 215, a pressure-maintaining coil winding, 216, a pressure-maintaining stationary iron core, 221, a plug cover, 222, a pressure-reducing valve, 223, a pressure-reducing movable iron core spring, 224, a pressure-reducing movable iron core, 225, a pressure-reducing coil winding, 226, a pressure-reducing stationary iron core, 231, a bottom plate, 232, a special-shaped sealing ring, 233, a pressure-maintaining membrane, 263. a control end of the pressure reducing solenoid valve; 501. an intake ring groove, 502, a first intake port, 503, a second intake port, 504, an exhaust ring groove, 505, an exhaust passage, 506, an exhaust passage, 511, a dwell intake passage, 512, a first dwell intake port, 513, a second dwell intake port, 514, a third dwell intake port, 515, a fourth dwell intake port, 516, a fifth dwell intake port, 517, a sixth dwell intake port, 518, a seventh dwell intake port, 519, an eighth dwell intake port, 520, a dwell diaphragm apply chamber, 521, a first relief intake port, 522, a second relief intake port, 523, a third relief intake port, 524, a fourth relief intake port, 525, a fifth relief intake port, 526, a sixth relief intake port, 527, a seventh relief intake port, 528, a relief diaphragm apply chamber, 531, a first dwell exhaust port, 532, a second dwell exhaust port, 541, a first relief exhaust port, 542, a second relief exhaust port, 543. a third pressure relief vent, 544.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

the utility model provides a commercial vehicle double-channel ABS front axle brake module assembly, as shown in figure 1 and figure 2, comprising a middle valve body 1 and two ABS solenoid valves with the same structure, wherein the two ABS solenoid valves are a left ABS solenoid valve 2 arranged on the left side of the middle valve body 1 and a right ABS solenoid valve 3 arranged on the right side of the middle valve body 1, the left ABS solenoid valve 2 and the right ABS solenoid valve 3 have the same structure and the same working principle and working process, an exhaust muffler 4 is arranged below the middle valve body 1, the upper part of the middle valve body 1 is provided with the left ABS solenoid valve 2, the left side of the middle valve body 1 is provided with a left air outlet 121 communicated with the left ABS electromagnetic valve 2, the right side of the middle valve body 1 is provided with a right air outlet 122 communicated with the right ABS electromagnetic valve 3, and the lower part of the middle valve body 1 is provided with an air outlet 13 communicated with the exhaust muffler 4;

an air inlet ring groove 501, two groups of air inlet channels, two air outlet ring grooves 504, two exhaust channels 505 and two air outlet channels 506 are arranged in the middle valve body 1, the air inlet ring groove 501 is communicated with an air inlet 11, the two exhaust channels 505 are communicated with an exhaust port 13, and a pressure maintaining membrane mechanism for controlling the communication or disconnection of the air inlet ring groove 501 and the air inlet channels is arranged between the air inlet ring groove 501 and each group of air inlet channels; the two groups of air inlet channels are respectively communicated with one air outlet ring groove 504, each air outlet ring groove 504 is communicated with one air outlet channel 506, each air outlet ring groove 504 is also communicated with one air outlet channel 505, and the two air outlet channels 506 are respectively communicated with the left air outlet 121 and the right air outlet 122; a pressure reduction membrane mechanism for controlling the communication or disconnection between each exhaust channel 505 and the corresponding air outlet ring groove 504 is arranged between each exhaust channel 505 and the corresponding air outlet ring groove 504; be provided with the pressurize passageway that is used for controlling pressurize diaphragm mechanism between air inlet ring groove 501 and the pressurize diaphragm mechanism, pressurize solenoid valve 201 among the ABS solenoid valve sets up the intercommunication or the disconnection intercommunication that is used for controlling the pressurize passageway on the pressurize passageway, be equipped with the decompression passageway that is used for controlling the decompress diaphragm mechanism between air inlet ring groove 501 and the decompress diaphragm mechanism, decompress solenoid valve 202 among the ABS solenoid valve sets up the intercommunication or the disconnection intercommunication that is used for controlling the decompression passageway on the decompression passageway, wherein, pressurize solenoid valve 201 normally opens, decompress solenoid valve 202 normally closes, air inlet 11 is connected with the gas outlet of outside brake valve, left side gas outlet 121 is connected with outside left brake chamber, right side gas outlet 122 is connected with outside right brake chamber.

Each group of air inlet channels in the middle valve body 1 is formed by communicating a first air inlet channel 502 and a second air inlet channel 503, an air inlet ring groove 501 is communicated with the first air inlet channel 502, and the second air inlet channel 503 is communicated with an air outlet ring groove 504;

as shown in fig. 3, the ABS solenoid valve includes a pressure maintaining solenoid valve 201, a pressure reducing solenoid valve 202, a bottom plate assembly 203, a plug assembly 204 connected to an external ABS controller of the entire vehicle and controlling the pressure maintaining solenoid valve 201 and the pressure reducing solenoid valve 202, and a housing 205; the part of the shell 205 close to one side of the middle valve body is a shell back plate 206, and the plug connector component 204, the pressure maintaining electromagnetic valve 201 and the pressure reducing electromagnetic valve 202 are sealed in the shell 205 together; the shell back plate 206 and the bottom plate assembly 203 are in bolted connection with the intermediate valve body 1, and the bottom plate assembly 203 is positioned between the shell back plate 206 and the intermediate valve body 1;

the pressure maintaining electromagnetic valve 201 is formed by sequentially connecting a pressure maintaining electromagnetic valve plug 211, a pressure maintaining valve 212, a pressure maintaining movable iron core spring 213, a pressure maintaining movable iron core 214, a pressure maintaining coil winding 215 and a pressure maintaining static iron core 216, and the pressure reducing electromagnetic valve 202 is formed by sequentially connecting a pressure reducing electromagnetic valve plug 221, a pressure reducing valve 222, a pressure reducing movable iron core spring 223, a pressure reducing movable iron core 224, a pressure reducing coil winding 225 and a pressure reducing static iron core 226;

as shown in fig. 6, the bottom plate assembly 203 includes a bottom plate 231, a pressure maintaining diaphragm mechanism and a pressure reducing diaphragm mechanism, a plurality of concave shaped grooves are provided on the surface of the housing back plate 206 close to the bottom plate 231, the bottom plate 231 is attached to the housing back plate 206, and a plurality of shaped channels are formed between the shaped grooves and the housing back plate 206;

as shown in fig. 4, the pressure maintaining diaphragm mechanism includes a pressure maintaining diaphragm 233 and a pressure maintaining diaphragm spring 234, the pressure reducing diaphragm mechanism includes a pressure reducing diaphragm 235 and a pressure reducing diaphragm spring 236, and both the pressure maintaining diaphragm 233 and the pressure reducing diaphragm 235 are disposed between the bottom plate 231 and the intermediate valve body 1;

a pressure maintaining diaphragm acting chamber 520 is formed by a cavity between the pressure maintaining diaphragm 233 and the bottom plate 231, and a pressure maintaining diaphragm spring 234 is disposed between the pressure maintaining diaphragm 233 and the bottom plate 231; the cavity between the pressure-reducing diaphragm 235 and the bottom plate 231 forms a pressure-reducing diaphragm acting cavity 528, and the pressure-reducing diaphragm spring 236 is disposed between the pressure-reducing diaphragm 235 and the bottom plate 231; the pressure maintaining membrane 233 is arranged between the air inlet ring groove 501 and the first air inlet channel 502 and used for controlling the communication or disconnection between the air inlet ring groove 501 and the first air inlet channel 502; a pressure reduction diaphragm 235 is arranged between the exhaust channel 505 and the air outlet channel 506 for controlling the communication or disconnection of the exhaust channel 505 and the air outlet channel 506;

the pressure maintaining air inlet passage of the ABS electromagnetic valve comprises a pressure maintaining air inlet channel 511, a first pressure maintaining air inlet 512, a second pressure maintaining air inlet 513, a third pressure maintaining air inlet 514, a fourth pressure maintaining air inlet 515, a fifth pressure maintaining air inlet 516, a sixth pressure maintaining air inlet 517, a seventh pressure maintaining air inlet 518 and an eighth pressure maintaining air inlet 519 which are sequentially communicated; the pressure maintaining air inlet channel 511 is communicated with the air inlet ring groove 501, the first pressure maintaining air inlet 512 is communicated with the second pressure maintaining air inlet 513 through a special-shaped channel, the seventh pressure maintaining air inlet 518 is communicated with the eighth pressure maintaining air inlet 519 through a special-shaped channel, and the eighth pressure maintaining air inlet 519 is communicated with the pressure maintaining membrane action cavity 520;

the decompression intake passage of the ABS solenoid valve includes a first decompression intake port 521, a second decompression intake port 522, a third decompression intake port 523, a fourth decompression intake port 524, a fifth decompression intake port 525, a sixth decompression intake port 526, and a seventh decompression intake port 527 that are communicated in this order; the first decompression inlet port 521 and the first decompression inlet port 512 communicate through a modified passage, the sixth decompression inlet port 526 and the seventh decompression inlet port 527 communicate through a modified passage, and the seventh decompression inlet port 527 communicates with the decompression membrane acting chamber 528;

the pressure maintaining exhaust passage of the ABS electromagnetic valve comprises a first pressure maintaining exhaust port 531, a second pressure maintaining exhaust port 532 and a pressure maintaining and reducing common exhaust port 544 which are communicated in sequence; the second pressure maintaining exhaust port 532 is communicated with the pressure maintaining and reducing common exhaust port 544 through a special-shaped channel;

the decompression exhaust passage of the ABS electromagnetic valve comprises a first decompression exhaust port 541, a second decompression exhaust port 542, a third decompression exhaust port 543 and a pressure-maintaining decompression common exhaust port 544 which are communicated in sequence; the third decompression exhaust port 543 and the pressure maintaining and decompression common exhaust port 544 are communicated through a special-shaped channel, and the pressure maintaining and decompression common exhaust port 544 is communicated with the exhaust port 13 through an internal channel of the intermediate valve body 1;

the pressure maintaining valve 212 controls the connection and disconnection of the fourth pressure maintaining air inlet 515 and the fifth pressure maintaining air inlet 516, and the pressure maintaining movable iron core 214 controls the connection and disconnection of the fifth pressure maintaining air inlet 516 and the first pressure maintaining air outlet 531;

the decompression valve 222 controls the connection and disconnection of the first decompression exhaust port 541 and the fourth decompression inlet port 524, and the decompression plunger 214 controls the connection and disconnection of the fourth decompression inlet port 524 and the third decompression inlet port 523.

As shown in fig. 6, the shaped seal rings 232 for sealing reinforcement are provided in the shaped channels between the first and second holding

pressure intake ports

512 and 513, between the seventh and eighth holding

pressure intake ports

518 and 519, and in the shaped channels between the middle, first decompression intake port 521 and first holding pressure intake port 512, between the fifth decompression intake port 525 and sixth decompression intake port 526, and between the third decompression exhaust port 543 and the holding pressure decompression common exhaust port 544.

As shown in fig. 2, the plug assembly 204 includes a plug ground terminal 261, a holding pressure solenoid valve control terminal 262 connected to the holding pressure coil winding 215 in the holding pressure solenoid valve 201 and controlling the holding pressure solenoid valve 201, and a pressure reducing solenoid valve control terminal 263 connected to the pressure reducing coil winding 225 in the pressure reducing solenoid valve 202 and controlling the pressure reducing solenoid valve 202, wherein the plug ground terminal 261, the holding pressure solenoid valve control terminal 262, and the pressure reducing solenoid valve control terminal 263 all extend from the inside of the housing 205 to the outside of the housing 205.

The pressure maintaining air inlet passage 511 is arranged inside the middle valve body 1;

as shown in fig. 5, the third dwell pressure intake port 514, the sixth dwell pressure intake port 517, the second relief intake port 522, the fifth relief intake port 525, the second dwell pressure exhaust port 532, and the second relief exhaust port 542 are provided on the outer surface of the housing back plate 206;

as shown in fig. 3, a fourth pressure-maintaining inlet 515, a fifth pressure-maintaining inlet 516, a third decompression inlet 523, a fourth decompression inlet 524, a first pressure-maintaining exhaust port 531, and a first decompression exhaust port 541 are provided on the inner surface of the case back plate 206;

the first pressure-maintaining air inlet 512, the second pressure-maintaining air inlet 513, the seventh pressure-maintaining air inlet 518, the eighth pressure-maintaining air inlet 519, the first pressure-reducing air inlet 521, the sixth pressure-reducing air inlet 526, the seventh pressure-reducing air inlet 527, the third pressure-reducing air outlet 543 and the pressure-maintaining pressure-reducing common air outlet 544 are arranged on the bottom plate 231;

the fourth pressure maintaining air inlet 515 and the third pressure maintaining air inlet 514 are two ports of the same through hole in the housing backplate 206, the fifth pressure maintaining air inlet 516 and the sixth pressure maintaining air inlet 517 are two ports of the same through hole in the housing backplate 206, the third pressure reducing air inlet 523 and the second pressure reducing air inlet 522 are two ports of the same through hole in the housing backplate 206, the fourth pressure reducing air inlet 524 and the fifth pressure reducing air inlet 525 are two ports of the same through hole in the housing backplate 206, the first pressure maintaining exhaust port 531 and the second pressure maintaining exhaust port 532 are two ports of the same through hole in the housing backplate 206, and the first pressure reducing exhaust port 541 and the second pressure reducing exhaust port 542 are two ports of the same through hole in the housing backplate 206;

after the housing backplate 206 and the bottom plate assembly 203 are attached and mounted, the third pressure maintaining air inlet 514 and the second pressure maintaining air inlet 513 are opposite and are communicated with each other, the sixth pressure maintaining air inlet 517 and the seventh pressure maintaining air inlet 518 are opposite and are communicated with each other, the second pressure reducing air inlet 522 and the first pressure reducing air inlet 521 are opposite and are communicated with each other, the fifth pressure reducing air inlet 525 and the sixth pressure reducing air inlet 526 are opposite and are communicated with each other, the second pressure maintaining air outlet 532 aligns with and is communicated with a special-shaped channel between the third pressure reducing air outlet 543 and the pressure maintaining pressure reducing common air outlet 544, and the second pressure reducing air outlet 542 and the third pressure reducing air outlet 543 are opposite and are communicated.

As shown in fig. 3, the pressure-maintaining valve 212 is provided with a pressure-maintaining valve groove along the axial direction, the pressure-maintaining valve groove can communicate the fourth pressure-maintaining air inlet 515 with the fifth pressure-maintaining air inlet 516, the outer side of the pressure-maintaining movable iron core 214 is provided with a rectangular groove, the axial line of the pressure-maintaining stationary iron core 216 is provided with a hollow channel, and the hollow channel of the pressure-maintaining stationary iron core 216 is always communicated with the first pressure-maintaining exhaust port 531; when the pressure maintaining movable iron core 214 moves to a side close to the pressure maintaining valve 212, the rear end face of the pressure maintaining movable iron core 214 blocks the opening of the pressure maintaining valve groove close to the side of the fifth pressure maintaining air inlet 516, the pressure maintaining valve 212 is closed, the communication between the fourth pressure maintaining air inlet 515 and the fifth pressure maintaining air inlet 516 is disconnected, the front end face of the pressure maintaining movable iron core 214 leaves the rear end face of the pressure maintaining stationary iron core 216, the hollow channel of the pressure maintaining stationary iron core 216 is communicated with the rectangular groove of the pressure maintaining movable iron core 214, and the fifth pressure maintaining air inlet 516 is communicated with the first pressure maintaining exhaust port 531 through the rectangular groove of the pressure maintaining movable iron core 214 and the hollow channel of the pressure maintaining stationary iron core 216; when the pressure maintaining movable iron core 214 moves to the side far away from the pressure maintaining valve 212, the rear end face of the pressure maintaining movable iron core 214 leaves the opening of the pressure maintaining valve groove near the side of the fifth pressure maintaining air inlet 516, the pressure maintaining valve 212 is opened, the fourth pressure maintaining air inlet 515 is communicated with the fifth pressure maintaining air inlet 516, the rear end face of the pressure maintaining movable iron core 214 is attached to the front end face of the pressure maintaining static iron core 216 and blocks the opening of the hollow channel of the pressure maintaining static iron core 216 near the side of the pressure maintaining movable iron core 214, the communication between the rectangular groove of the pressure maintaining movable iron core 214 and the hollow channel of the pressure maintaining static iron core 216 is disconnected, and the communication between the fifth pressure maintaining air inlet 516 and the first pressure maintaining air outlet 531 is disconnected;

the decompression valve 222 is provided with a decompression valve groove which can communicate the first decompression exhaust port 541 with the fourth decompression inlet port 524 along the axial direction, the outer side of the decompression movable iron core 224 is provided with a rectangular groove, the axial line of the decompression static iron core 226 is provided with a hollow channel, and the hollow channel of the decompression static iron core 226 is communicated with the third decompression inlet port 523 all the time; when the decompression movable iron core 224 moves to a side close to the decompression valve 222, the rear end face of the decompression movable iron core 224 blocks the opening of the decompression valve groove close to the side of the fourth decompression air inlet 524, the decompression valve 222 is closed, the communication between the first decompression air outlet 541 and the fourth decompression air inlet 524 is cut off, the front end face of the decompression movable iron core 224 leaves the rear end face of the decompression static iron core 226, the hollow channel of the decompression static iron core 226 is communicated with the rectangular groove of the decompression movable iron core 224, and the third decompression air inlet 523 is communicated with the fourth decompression air inlet 524 through the rectangular groove of the decompression movable iron core 224 and the hollow channel of the decompression static iron core 226; when the decompression movable iron core 224 is located and moved to the side far away from the decompression valve 222, the rear end face of the decompression movable iron core 224 is away from the opening of the decompression valve groove near the side of the fourth decompression air inlet 524, the decompression valve 222 is opened, the first decompression air outlet 541 and the fourth decompression air inlet 524 are communicated, the front end face of the decompression movable iron core 224 is attached to the rear end face of the decompression static iron core 226 and blocks the opening of the hollow channel of the decompression static iron core 226 near the decompression movable iron core 224, the communication between the rectangular groove of the decompression movable iron core 224 and the hollow channel of the decompression static iron core 226 is disconnected, and the communication between the third decompression air inlet 523 and the fourth decompression air inlet 524 is disconnected.

In the present embodiment, as shown in fig. 2, the pressure-maintaining solenoid valve 201 is normally open, and the pressure-reducing solenoid valve 202 is normally closed. When the pressure maintaining electromagnetic valve control end 262 is electrified, the pressure maintaining coil winding 215 is electrified and generates an electromagnetic field together with the pressure maintaining stationary iron core 216, so that the pressure maintaining movable iron core 214 moves towards the pressure maintaining stationary iron core 216, the pressure maintaining electromagnetic valve 201 is closed, the pressure maintaining valve 212 is opened, and meanwhile, the communication between the fifth pressure maintaining air inlet 516 and the first pressure maintaining air outlet 531 is disconnected. When the decompression solenoid valve control end 263 is energized, the decompression coil winding 225 is energized to generate an electromagnetic field together with the decompression stationary core 226, and the decompression movable core 224 is moved toward the decompression stationary core 226 to open the decompression solenoid valve 202, and the communication between the third decompression inlet 523 and the fourth decompression inlet 524 is cut off, and the decompression valve 222 is opened. The power on and off of the pressure maintaining electromagnetic valve control end 262 and the pressure reducing electromagnetic valve control end 263 are controlled by the ABS controller of the whole automobile.

In the above embodiment, the working principle is as follows:

in practical use, the air inlet 11 of this embodiment is connected to an air outlet of an external brake valve, the left air outlet 121 is connected to an air inlet of an external left brake air chamber, the right air outlet 122 is connected to an air inlet of an external right brake air chamber, and the connector assembly 204 is connected to an ABS controller of an external entire vehicle.

In the normal braking stage, neither the holding pressure solenoid valve control end 262 nor the pressure reducing solenoid valve control end 263 is energized, i.e., neither the holding pressure coil winding 215 nor the pressure reducing coil winding 225 is energized. The pressure-maintaining plunger 214 is pressed against the pressure-maintaining valve 212 by the pressure-maintaining plunger spring 213, the pressure-maintaining valve 212 is closed, the communication between the fourth pressure-maintaining air inlet 515 and the fifth pressure-maintaining air inlet 516 is cut off, and the fifth pressure-maintaining air inlet 516 is communicated with the first pressure-maintaining exhaust port 531. The pressure reducing plunger 224 is pressed against the pressure reducing valve 222 by the pressure reducing plunger 223, and the pressure reducing valve 222 is closed, and at this time, the communication between the first pressure reducing exhaust port 541 and the fourth pressure reducing intake port 524 is interrupted, and the communication between the third pressure reducing intake port 523 and the fourth pressure reducing intake port 524 is interrupted.

When the driver steps on the brake pedal, high-pressure air gets into from the gas outlet of brake valve the utility model discloses an air inlet 11 then goes into air inlet ring groove 501 and pressurize inlet channel 511. The pressure-maintaining intake passage 511 communicates with the first pressure-maintaining intake port 512. At this time, the high-pressure gas at the first pressure-maintaining gas inlet 512 is divided into two gas flows, wherein one gas flow is divided into the first pressure-maintaining gas inlet 512, the second pressure-maintaining gas inlet 513, the third pressure-maintaining gas inlet 514 and the fourth pressure-maintaining gas inlet 515, and since the communication between the fourth pressure-maintaining gas inlet 515 and the fifth pressure-maintaining gas inlet 516 is cut off, the high-pressure gas stays at the valve gate of the pressure-maintaining valve 212. The other flow direction is the first pressure-retaining air inlet 512, the first decompression air inlet 521, the second decompression air inlet 522, the third decompression air inlet 523, the fourth decompression air inlet 524, the fifth decompression air inlet 525, the sixth decompression air inlet 526, the seventh decompression air inlet 527 and the decompression diaphragm acting cavity 528, the high-pressure air in the decompression diaphragm acting cavity 528 and the decompression diaphragm spring 236 jointly act against the decompression diaphragm 235, and the exhaust channel 505 is closed. Meanwhile, the high-pressure gas in the gas inlet ring groove 501 pushes the pressure maintaining diaphragm 233 open, enters the first gas inlet channel 502, passes through the second gas inlet channel 503, the gas outlet ring groove 504 and the gas outlet channel 506, reaches the left gas outlet 121, and finally reaches the brake chamber, so that the vehicle brake is realized.

And (3) pressure maintaining stage:

in the conventional braking stage, when the ABS controller of the entire vehicle determines according to the detected vehicle state and the preset control strategy that the brake chamber needs to enter the pressure maintaining state, the control end 262 of the pressure maintaining solenoid valve is energized, the control end 263 of the pressure reducing solenoid valve is not energized, i.e., the winding 215 of the pressure maintaining coil is energized, and the winding 225 of the pressure reducing coil is not energized. The pressure-maintaining movable core 214 moves toward the pressure-maintaining stationary core 216, the pressure-maintaining valve 212 opens, the fourth pressure-maintaining air inlet 515 and the fifth pressure-maintaining air inlet 516 communicate with each other at this time, and the communication between the fifth pressure-maintaining air inlet 516 and the first pressure-maintaining air outlet 531 is disconnected. The pressure reducing plunger 224 is pressed against the pressure reducing valve 222 by the pressure reducing plunger 223, and the pressure reducing valve 222 is closed, and at this time, the communication between the first pressure reducing exhaust port 541 and the fourth pressure reducing intake port 524 is interrupted, and the third pressure reducing intake port 523 and the fourth pressure reducing intake port 524 are communicated.

At this time, the high-pressure gas at the fourth pressure maintaining gas inlet 515 enters the fifth pressure maintaining gas inlet 516 through the valve opening of the pressure maintaining valve 212, and the gas flows to the fourth pressure maintaining gas inlet 515, the fifth pressure maintaining gas inlet 516, the sixth pressure maintaining gas inlet 517, the seventh pressure maintaining gas inlet 518, the eighth pressure maintaining gas inlet 519 and the pressure maintaining diaphragm action cavity 520. The high-pressure gas at the pressure-maintaining diaphragm acting chamber 520 cooperates with the pressure-maintaining diaphragm spring 234 to press against the pressure-maintaining diaphragm 233, closing the first intake passage 502. The air flow between the air inlet ring groove 501 and the first air inlet channel 502 is cut off, and the air flow passage from the air inlet 11 to the air outlet 121 is cut off. At this time, the air pressure of the brake chamber is not increased any more, and the brake chamber is in a pressure maintaining state.

And (3) a decompression stage:

and in the pressure maintaining stage, when the ABS controller of the whole automobile judges that the brake chamber needs to be decompressed according to the detected vehicle state and a preset control strategy, the control end 262 of the pressure maintaining electromagnetic valve and the control end 263 of the pressure reducing electromagnetic valve are both electrified, namely the pressure maintaining coil winding 215 and the pressure reducing coil winding 225 are both electrified. The pressure-maintaining movable core 214 moves toward the pressure-maintaining stationary core 216, the pressure-maintaining valve 212 opens, the fourth pressure-maintaining air inlet 515 and the fifth pressure-maintaining air inlet 516 communicate with each other at this time, and the communication between the fifth pressure-maintaining air inlet 516 and the first pressure-maintaining air outlet 531 is disconnected. When the pressure reducing valve 222 is opened by moving the movable core 224 toward the stationary core 226, the first pressure reducing exhaust port 541 communicates with the fourth pressure reducing intake port 524, and the communication between the third pressure reducing intake port 523 and the fourth pressure reducing intake port 524 is interrupted.

At this time, the high-pressure gas at the decompression membrane action cavity 527 flows in the same direction, namely, the decompression membrane action cavity 528, the seventh decompression inlet 527, the sixth decompression inlet 526, the fifth decompression inlet 525, the fourth decompression inlet 524, the first decompression outlet 541, the second decompression outlet 542, the third decompression outlet 543 and the pressure-maintaining and decompression common outlet 544. The pressure-maintaining and pressure-reducing common exhaust port 544 is communicated with the exhaust port 13 through an internal passage of the intermediate valve body 1, and at this time, the high-pressure gas of the pressure-reducing diaphragm action chamber 527 is finally exhausted to the atmosphere through the exhaust port 13 and the muffler 4. The high-pressure gas at the air outlet ring groove 504 pushes the pressure reduction diaphragm 235 open to communicate the air outlet ring groove 504 with the exhaust channel 505, and at this time, the high-pressure gas in the brake air chamber is exhausted into the atmosphere through the left air outlet 121, the air outlet channel 506, the air outlet ring groove 504 and the exhaust channel 505 and finally through the exhaust port 13 and the muffler 4, so that the purpose of reducing the pressure of the brake air chamber is achieved.

A pressurization stage:

and in the pressure reduction stage, when the ABS controller of the whole automobile judges according to the detected vehicle state and a preset control strategy and needs to enable the brake air chamber to enter a pressurization state, the pressure maintaining solenoid valve control end 262 and the pressure reducing solenoid valve control end 263 are not electrified, and the state of the solenoid valves is the same as that in the conventional braking stage.

Since the communication between the first decompression exhaust port 541 and the fourth decompression inlet port 524 is cut off, the third decompression inlet port 523 communicates with the fourth decompression inlet port 524, at this time, the high-pressure gas at the pressure-maintaining inlet passage 511 passes through the first pressure-maintaining inlet port 512, the first decompression inlet port 521, the second decompression inlet port 522, the third decompression inlet port 523, the fourth decompression inlet port 524, the fifth decompression inlet port 525, the sixth decompression inlet port 526, the seventh decompression inlet port 527, the decompression diaphragm acting chamber 528, and the high-pressure gas in the decompression diaphragm acting chamber 528 and the decompression diaphragm spring 236 act together against the decompression diaphragm 235, thereby closing the exhaust passage 505.

Since the communication between the fourth pressure maintaining air inlet 515 and the fifth pressure maintaining air inlet 516 is cut off, the fifth pressure maintaining air inlet 516 is communicated with the first pressure maintaining exhaust port 531, and the flow direction of the high-pressure gas at the pressure maintaining diaphragm action chamber 520 is as follows, at this time, the pressure maintaining diaphragm action chamber 520, the eighth pressure maintaining air inlet 519, the seventh pressure maintaining air inlet 518, the sixth pressure maintaining air inlet 517, the fifth pressure maintaining air inlet 516, the first pressure maintaining exhaust port 531, the second pressure maintaining exhaust port 532 and the pressure maintaining and pressure reducing common exhaust port 544 are formed. The pressure-maintaining and pressure-reducing common exhaust port 544 is communicated with the exhaust port 13 through an internal passage of the intermediate valve body 1, and at this time, the high-pressure gas in the pressure-maintaining diaphragm action chamber 520 is finally exhausted to the atmosphere through the exhaust port 13 and the muffler 4. At this time, the gas flow state inside the left ABS solenoid valve 2 is the same as the above-mentioned conventional braking stage, so as to achieve the purpose of pressurizing the brake chamber.

Binary channels ABS front axle brake module assembly, can realize the function of two traditional ABS solenoid valves. Compared with the traditional ABS solenoid valve, the utility model has the advantages of the integrated level is high, and spare part is small in quantity, and weight cost is low, and convenient assembling reveals that the risk is little.

Claims

1. A double-channel ABS front axle brake module assembly of a commercial vehicle is characterized by comprising a middle valve body (1) and two ABS electromagnetic valves with the same structure, wherein the two ABS electromagnetic valves are a left ABS electromagnetic valve (2) arranged on the left side of the middle valve body (1) and a right ABS electromagnetic valve (3) arranged on the right side of the middle valve body (1), an exhaust silencer (4) is arranged below the middle valve body (1), the upper part of the middle valve body (1) is provided with the left ABS electromagnetic valve (2), the left side of the middle valve body (1) is provided with a left air outlet (121) communicated with the left ABS electromagnetic valve (2), the right side of the middle valve body (1) is provided with a right air outlet (122) communicated with the right ABS electromagnetic valve (3), and the lower part of the middle valve body (1) is provided with an air outlet (13) communicated with the exhaust muffler (4);

an air inlet ring groove (501), two groups of air inlet channels, two air outlet ring grooves (504), two exhaust channels (505) and two air outlet channels (506) are arranged in the middle valve body (1), the air inlet ring groove (501) is communicated with an air inlet (11), the two exhaust channels (505) are communicated with an exhaust port (13), and a pressure maintaining diaphragm mechanism for controlling the communication or disconnection between the air inlet ring groove (501) and the air inlet channels is arranged between the air inlet ring groove (501) and each group of air inlet channels; the two groups of air inlet channels are respectively communicated with one air outlet ring groove (504), each air outlet ring groove (504) is communicated with one air outlet channel (506), each air outlet ring groove (504) is also communicated with one air outlet channel (505), and the two air outlet channels (506) are respectively communicated with the left air outlet (121) and the right air outlet (122); a pressure reduction membrane mechanism for controlling the communication or disconnection between each exhaust channel (505) and the corresponding gas outlet ring groove (504) is arranged between each exhaust channel (505) and the corresponding gas outlet ring groove (504); be provided with the pressurize passageway that is used for controlling pressurize diaphragm mechanism between air inlet ring groove (501) and the pressurize diaphragm mechanism, pressurize solenoid valve (201) among the ABS solenoid valve set up the intercommunication or the disconnection intercommunication that is used for controlling the pressurize passageway on the pressurize passageway, be equipped with the decompression passageway that is used for controlling the decompression diaphragm mechanism between air inlet ring groove (501) and the decompression diaphragm mechanism, decompression solenoid valve (202) among the ABS solenoid valve set up the intercommunication or the disconnection intercommunication that is used for controlling the decompression passageway on the decompression passageway, wherein, pressurize solenoid valve (201) normally open, decompression solenoid valve (202) normally closed, air inlet (11) are connected with the gas outlet of the brake valve of outside, left side gas outlet (121) are connected with the left brake air chamber of outside, right side gas outlet (122) are connected with the right brake air chamber of outside.

2. The dual-channel ABS front axle brake module assembly for the commercial vehicle as claimed in claim 1, wherein each set of air inlet channels in the intermediate valve body (1) is formed by a first air inlet channel (502) and a second air inlet channel (503) which are communicated, the air inlet ring groove (501) is communicated with the first air inlet channel (502), and the second air inlet channel (503) is communicated with the air outlet ring groove (504);

the ABS electromagnetic valve comprises a pressure maintaining electromagnetic valve (201), a pressure reducing electromagnetic valve (202), a bottom plate component (203), a plug-in connector component (204) and a shell (205), wherein the plug-in connector component is connected with an external whole vehicle ABS controller and controls the pressure maintaining electromagnetic valve (201) and the pressure reducing electromagnetic valve to be connected (202); a shell back plate (206) is arranged at one side of the shell (205) close to the middle valve body, and the plug connector assembly (204), the pressure maintaining electromagnetic valve (201) and the pressure reducing electromagnetic valve (202) are sealed in the shell (205) together; the shell back plate (206) and the bottom plate assembly (203) are in bolted connection with the middle valve body (1), and the bottom plate assembly (203) is positioned between the shell back plate (206) and the middle valve body (1);

the pressure maintaining electromagnetic valve (201) is formed by sequentially connecting a pressure maintaining electromagnetic valve plug cover (211), a pressure maintaining valve (212), a pressure maintaining movable iron core spring (213), a pressure maintaining movable iron core (214), a pressure maintaining coil winding (215) and a pressure maintaining static iron core (216), and the pressure reducing electromagnetic valve (202) is formed by sequentially connecting a pressure reducing electromagnetic valve plug cover (221), a pressure reducing valve (222), a pressure reducing movable iron core spring (223), a pressure reducing movable iron core (224), a pressure reducing coil winding (225) and a pressure reducing static iron core (226);

the bottom plate assembly (203) comprises a bottom plate (231), a pressure maintaining diaphragm mechanism and a pressure reducing diaphragm mechanism, wherein a plurality of sunken special-shaped grooves are formed in the surface, close to the shell back plate (206), of the bottom plate (231), the bottom plate (231) is attached to the shell back plate (206), and a plurality of special-shaped channels are formed between the special-shaped grooves and the shell back plate (206);

the pressure maintaining diaphragm mechanism comprises a pressure maintaining diaphragm (233) and a pressure maintaining diaphragm spring (234), the pressure reducing diaphragm mechanism comprises a pressure reducing diaphragm (235) and a pressure reducing diaphragm spring (236), and the pressure maintaining diaphragm (233) and the pressure reducing diaphragm (235) are both arranged between the bottom plate (231) and the middle valve body (1);

a cavity between the pressure maintaining diaphragm (233) and the bottom plate (231) forms a pressure maintaining diaphragm acting cavity (520), and the pressure maintaining diaphragm spring (234) is arranged between the pressure maintaining diaphragm (233) and the bottom plate (231); a cavity between the decompression diaphragm (235) and the bottom plate (231) forms a decompression diaphragm acting cavity (528), and the decompression diaphragm spring (236) is arranged between the decompression diaphragm (235) and the bottom plate (231); the pressure maintaining membrane (233) is arranged between the air inlet ring groove (501) and the first air inlet channel (502) and used for controlling the connection or disconnection of the air inlet ring groove (501) and the first air inlet channel (502); the pressure reduction membrane (235) is arranged between the exhaust channel (505) and the air outlet channel (506) and used for controlling the communication or disconnection of the exhaust channel (505) and the air outlet channel (506);

the pressure maintaining air inlet passage of the ABS electromagnetic valve comprises a pressure maintaining air inlet channel (511), a first pressure maintaining air inlet (512), a second pressure maintaining air inlet (513), a third pressure maintaining air inlet (514), a fourth pressure maintaining air inlet (515), a fifth pressure maintaining air inlet (516), a sixth pressure maintaining air inlet (517), a seventh pressure maintaining air inlet (518) and an eighth pressure maintaining air inlet (519) which are communicated in sequence; the pressure maintaining air inlet channel (511) is communicated with the air inlet ring groove (501), the first pressure maintaining air inlet (512) is communicated with the second pressure maintaining air inlet (513) through a special-shaped channel, the seventh pressure maintaining air inlet (518) is communicated with the eighth pressure maintaining air inlet (519) through a special-shaped channel, and the eighth pressure maintaining air inlet (519) is communicated with the pressure maintaining membrane acting cavity (520);

the decompression inlet passage of the ABS solenoid valve comprises a first decompression inlet (521), a second decompression inlet (522), a third decompression inlet (523), a fourth decompression inlet (524), a fifth decompression inlet (525), a sixth decompression inlet (526) and a seventh decompression inlet (527) which are communicated in sequence; the first decompression inlet port (521) and the first pressure-maintaining inlet port (512) are communicated through a profiled passage, the sixth decompression inlet port (526) and the seventh decompression inlet port (527) are communicated through a profiled passage, and the seventh decompression inlet port (527) is communicated with the decompression diaphragm acting chamber (528);

the pressure maintaining exhaust passage of the ABS electromagnetic valve comprises a first pressure maintaining exhaust port (531), a second pressure maintaining exhaust port (532) and a pressure maintaining and reducing common exhaust port (544), which are communicated in sequence; the second pressure maintaining exhaust port (532) is communicated with the pressure maintaining and reducing common exhaust port (544) through a special-shaped channel;

the decompression exhaust passage of the ABS electromagnetic valve comprises a first decompression exhaust port (541), a second decompression exhaust port (542), a third decompression exhaust port (543) and a pressure maintaining decompression common exhaust port (544), which are communicated in sequence; the third decompression exhaust port (543) is communicated with the pressure maintaining decompression common exhaust port (544) through a special-shaped channel, and the pressure maintaining decompression common exhaust port (544) is communicated with the exhaust port (13) through an internal channel of the middle valve body (1);

the pressure maintaining valve (212) controls the connection and disconnection of the fourth pressure maintaining air inlet (515) and the fifth pressure maintaining air inlet (516), and the pressure maintaining movable iron core (214) controls the connection and disconnection of the fifth pressure maintaining air inlet (516) and the first pressure maintaining air outlet (531);

the decompression valve (222) controls the connection and disconnection of the first decompression exhaust port (541) and the fourth decompression air inlet port (524), and the decompression movable iron core (224) controls the connection and disconnection of the fourth decompression air inlet port (524) and the third decompression air inlet port (523).

3. The dual-channel ABS front axle brake module assembly for commercial vehicles according to claim 2, characterized in that the profiled sealing rings (232) for sealing reinforcement are arranged in the profiled channels between the first pressure maintaining inlet (512) and the second pressure maintaining inlet (513), between the profiled channel and the middle between the seventh pressure maintaining inlet (518) and the eighth pressure maintaining inlet (519), between the first pressure reducing inlet (521) and the first pressure maintaining inlet (512), between the fifth pressure reducing inlet (525) and the sixth pressure reducing inlet (526) and between the third pressure reducing outlet (543) and the pressure maintaining pressure reducing common outlet (544).

4. The commercial vehicle dual-channel ABS front axle brake module assembly according to claim 2, wherein the plug assembly (204) comprises a plug grounding end (261), a pressure maintaining solenoid valve control end (262) connected with the pressure maintaining coil winding (215) in the pressure maintaining solenoid valve (201) and controlling the pressure maintaining solenoid valve (201), and a pressure reducing solenoid valve control end (263) connected with the pressure reducing coil winding (225) in the pressure reducing solenoid valve (202) and controlling the pressure reducing solenoid valve (202), and the plug grounding end (261), the pressure maintaining solenoid valve control end (262) and the pressure reducing solenoid valve control end (263) all extend out of the housing (205) from the inside of the housing (205).

5. The dual-channel ABS front axle brake module assembly for commercial vehicles according to claim 2, characterized in that the pressure-maintaining air inlet channel (511) is arranged inside the intermediate valve body (1);

a third pressure maintaining air inlet (514), a sixth pressure maintaining air inlet (517), a second pressure reducing air inlet (522), a fifth pressure reducing air inlet (525), a second pressure maintaining air outlet (532) and a second pressure reducing air outlet (542) are arranged on the outer surface of the shell back plate (206);

a fourth pressure maintaining air inlet (515), a fifth pressure maintaining air inlet (516), a third pressure reducing air inlet (523), a fourth pressure reducing air inlet (524), a first pressure maintaining exhaust air outlet (531) and a first pressure reducing exhaust air outlet (541) are arranged on the inner surface of the shell back plate (206);

the first pressure-maintaining air inlet (512), the second pressure-maintaining air inlet (513), the seventh pressure-maintaining air inlet (518), the eighth pressure-maintaining air inlet (519), the first pressure-reducing air inlet (521), the sixth pressure-reducing air inlet (526), the seventh pressure-reducing air inlet (527), the third pressure-reducing air outlet (543) and the pressure-maintaining pressure-reducing common air outlet (544) are arranged on the bottom plate (231);

the fourth pressure maintaining air inlet (515) and the third pressure maintaining air inlet (514) are two ports of the same through hole in the shell back plate (206), the fifth pressure maintaining air inlet (516) and the sixth pressure maintaining air inlet (517) are two ports of the same through hole in the shell back plate (206), the third pressure reducing air inlet (523) and the second pressure reducing air inlet (522) are two ports of the same through hole in the shell back plate (206), the fourth pressure reducing air inlet (524) and the fifth pressure reducing air inlet (525) are two ports of the same through hole in the shell back plate (206), the first pressure maintaining exhaust port (531) and the second pressure maintaining exhaust port (532) are two ports of the same through hole in the shell back plate (206), and the first pressure reducing exhaust port (541) and the second pressure reducing exhaust port (542) are two ports of the same through hole in the shell back plate (206);

after the shell back plate (206) and the bottom plate assembly (203) are attached and mounted, the third pressure maintaining air inlet (514) and the second pressure maintaining air inlet (513) are opposite and communicated with each other, the sixth pressure maintaining air inlet (517) and the seventh pressure maintaining air inlet (518) are opposite and communicated with each other, the second pressure reducing air inlet (522) and the first pressure reducing air inlet (521) are opposite and communicated with each other, the fifth pressure reducing air inlet (525) and the sixth pressure reducing air inlet (526) are opposite and communicated with each other, the second pressure maintaining air outlet (532) is aligned with a special-shaped channel between the third pressure reducing air outlet (543) and the pressure maintaining pressure reducing common air outlet (544) and communicated with the special-shaped channel, and the second pressure reducing air outlet (542) and the third pressure reducing air outlet (543) are opposite and.

6. The dual-channel ABS front axle brake module assembly of the commercial vehicle as claimed in claim 2, wherein the pressure maintaining valve (212) is provided with a pressure maintaining valve groove which can communicate the fourth pressure maintaining air inlet (515) and the fifth pressure maintaining air inlet (516) along the axial direction, the outer side of the pressure maintaining movable iron core (214) is provided with a rectangular groove, the axial line of the pressure maintaining static iron core (216) is provided with a hollow channel, and the hollow channel of the pressure maintaining static iron core (216) is always communicated with the first pressure maintaining exhaust port (531); when the pressure maintaining movable iron core (214) moves to one side close to the pressure maintaining valve (212), the rear end face of the pressure maintaining movable iron core (214) blocks an opening of a pressure maintaining valve groove at one side close to a fifth pressure maintaining air inlet (516), the pressure maintaining valve (212) is closed, the communication between a fourth pressure maintaining air inlet (515) and the fifth pressure maintaining air inlet (516) is disconnected, the front end face of the pressure maintaining movable iron core (214) leaves the rear end face of the pressure maintaining stationary iron core (216), a hollow channel of the pressure maintaining stationary iron core (216) is communicated with a rectangular groove of the pressure maintaining movable iron core (214), and the fifth pressure maintaining air inlet (516) is communicated with a first pressure maintaining air outlet (531) through the rectangular groove of the pressure maintaining movable iron core (214) and the hollow channel of the stationary iron core (216); when the pressure maintaining movable iron core (214) moves to the side far away from the pressure maintaining valve (212), the rear end face of the pressure maintaining movable iron core (214) leaves the opening of the pressure maintaining valve groove close to one side of a fifth pressure maintaining air inlet (516), the pressure maintaining valve (212) is opened, a fourth pressure maintaining air inlet (515) is communicated with the fifth pressure maintaining air inlet (516), the rear end face of the pressure maintaining movable iron core (214) is attached to the front end face of the pressure maintaining static iron core (216) and blocks the opening of the hollow channel of the pressure maintaining static iron core (216) close to one side of the pressure maintaining movable iron core (214), the communication between the rectangular groove of the pressure maintaining movable iron core (214) and the hollow channel of the pressure maintaining static iron core (216) is disconnected, and the communication between the fifth pressure maintaining air inlet (516) and a first pressure maintaining air outlet (531) is disconnected;

a decompression valve groove capable of communicating the first decompression exhaust port (541) with the fourth decompression air inlet port (524) is formed in the decompression valve (222) along the axial direction, a rectangular groove is formed in the outer side of the decompression movable iron core (224), a hollow channel is formed in the axial line of the decompression static iron core (226), and the hollow channel of the decompression static iron core (226) is communicated with the third decompression air inlet port (523) all the time; when the decompression movable iron core (224) moves to a side close to the decompression valve (222), the rear end face of the decompression movable iron core (224) blocks an opening of a decompression valve groove close to a side close to the fourth decompression air inlet (524), the decompression valve (222) is closed, the communication between the first decompression air outlet (541) and the fourth decompression air inlet (524) is cut off, the front end face of the decompression movable iron core (224) leaves the rear end face of the decompression static iron core (226), a hollow channel of the decompression static iron core (226) is communicated with the rectangular groove of the decompression movable iron core (224), and the third decompression air inlet (523) is communicated with the fourth decompression air inlet (524) through the rectangular groove of the decompression movable iron core (224) and the hollow channel of the decompression static iron core (226); when the decompression movable iron core (224) is located on the side far away from the decompression valve (222), the rear end face of the decompression movable iron core (224) is away from the opening on the side of the decompression valve groove close to the fourth decompression air inlet (524), the decompression valve (222) is opened, the first decompression air outlet (541) and the fourth decompression air inlet (524) are communicated, the front end face of the decompression movable iron core (224) is attached to the rear end face of the decompression static iron core (226) and blocks the opening on the side of the hollow channel of the decompression static iron core (226) close to the decompression movable iron core (224), the communication between the rectangular groove of the decompression movable iron core (224) and the hollow channel of the decompression static iron core (226) is disconnected, and the communication between the third decompression air inlet (523) and the fourth decompression air inlet (524) is disconnected.