CN107600059B - Integrated relay valve with ABS electromagnetic valve assembly - Google Patents
Integrated relay valve with ABS electromagnetic valve assembly Download PDFInfo
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- CN107600059B CN107600059B CN201710939590.8A CN201710939590A CN107600059B CN 107600059 B CN107600059 B CN 107600059B CN 201710939590 A CN201710939590 A CN 201710939590A CN 107600059 B CN107600059 B CN 107600059B
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- 238000007789 sealing Methods 0.000 claims description 6
- 230000030279 gene silencing Effects 0.000 claims description 5
- 230000003584 silencer Effects 0.000 claims description 4
- 230000006837 decompression Effects 0.000 abstract description 24
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Abstract
The invention discloses an integrated relay valve with an ABS electromagnetic valve assembly, which comprises a valve body, wherein a valve cover is arranged on an upper end cover of the valve body; an inner air inlet groove is formed in the upper end face of the valve body, and an outer air inlet groove is formed outside the inner air inlet groove; an air inlet is connected to the inner air inlet groove, and a valve control mechanism is arranged between the inner air inlet groove and the outer air inlet groove; the valve body is provided with an exhaust channel and two air outlet channels, each air outlet channel is provided with a pressure reducing channel and a pressure maintaining channel, a pressure reducing ring groove is arranged outside the pressure reducing channel, the pressure maintaining channel is provided with a pressure maintaining ring groove which is communicated with the exhaust channel, and the pressure maintaining ring groove is communicated with the outer air inlet groove; a pressure-maintaining diaphragm mechanism is arranged between the pressure-maintaining channel and the pressure-maintaining ring groove; a decompression passage is arranged between the outer air inlet groove and the decompression diaphragm mechanism, and a decompression electromagnetic valve is arranged on the decompression passage; a pressure maintaining passage is arranged between the outer air inlet groove and the pressure maintaining diaphragm mechanism, and a pressure maintaining electromagnetic valve is arranged on the pressure maintaining passage.
Description
Technical Field
The invention relates to a valve, in particular to an integrated relay valve assembly with an ABS electromagnetic valve.
Background
The relay valve is a part of an automobile air brake system, and in a brake system of a truck, the relay valve plays a role in shortening reaction time and pressure building time. The problem that the space utilization rate is low exists in traditional relay valve area two ABS electromagnetic regulating valves, simultaneously, is connected with nylon pipe between relay valve and the ABS electromagnetic regulating valve assembly, has increased the gas leakage risk, and is inconvenient in the aspect of pipeline arrangement and installation.
Disclosure of Invention
Therefore, the invention aims to provide the integrated relay valve with the ABS electromagnetic valve assembly, which has the advantages of compact structure, quick response time, light weight, low cost and the like.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the integrated relay valve with the ABS electromagnetic valve assembly comprises a valve body, wherein a valve cover is arranged on an upper end cover of the valve body; an inner air inlet groove is formed in the upper end face of the valve body, and an outer air inlet groove is formed outside the inner air inlet groove; an air inlet is connected to the inner air inlet groove, and a valve control mechanism for controlling the communication or disconnection between the inner air inlet groove and the outer air inlet groove is arranged between the inner air inlet groove and the outer air inlet groove;
the valve body is provided with an exhaust channel and two air outlet channels, each air outlet channel is provided with a pressure reducing channel and a pressure maintaining channel, a pressure reducing ring groove is arranged outside the pressure reducing channel, a pressure maintaining ring groove is arranged outside the pressure maintaining channel, the pressure reducing ring groove is communicated with the exhaust channel, and the pressure maintaining ring groove is communicated with the outer air inlet groove; a pressure-maintaining diaphragm mechanism used for controlling the communication or cutting-off between the pressure-maintaining channel and the pressure-maintaining ring groove is arranged between the pressure-maintaining channel and the pressure-maintaining ring groove;
a pressure reducing passage for enabling the pressure reducing diaphragm mechanism to cut off the pressure reducing passage and the pressure reducing ring groove is arranged between the outer air inlet groove and the pressure reducing diaphragm mechanism, and a pressure reducing electromagnetic valve for controlling the pressure reducing passage to be communicated or cut off is arranged on the pressure reducing passage; a pressure maintaining passage for enabling the pressure maintaining diaphragm mechanism to cut off the pressure maintaining channel and the pressure maintaining ring groove is arranged between the outer air inlet groove and the pressure maintaining diaphragm mechanism, and a pressure maintaining electromagnetic valve for controlling the pressure maintaining passage to be communicated or cut off is arranged on the pressure maintaining passage.
Further, the valve control mechanism comprises a vertical sliding rod arranged on the valve cover, a piston which is in sliding fit with the vertical sliding rod is sleeved on the vertical sliding rod, and the piston is in airtight fit with the valve cover and forms a control cavity with the valve cover;
the valve assembly is sleeved on the spring seat, and is in airtight fit with the valve seat under the action of the spring;
the control cavity is provided with a control port for introducing gas and driving the piston to move downwards so as to separate the valve assembly from the valve seat.
Further, the pressure reducing diaphragm mechanism comprises a pressure reducing diaphragm arranged between the pressure reducing channel and the pressure reducing ring groove, a pressure reducing spring used for driving the pressure reducing diaphragm to cut off the pressure reducing channel from the pressure reducing ring groove is arranged on one side of the pressure reducing diaphragm, which is opposite to the pressure reducing ring groove, and the pressure reducing passage is arranged on one side of the pressure reducing diaphragm, which is opposite to the pressure reducing ring groove and the pressure reducing channel.
Further, a pressure relief passage communicated with the exhaust passage is arranged on one side of the pressure relief diaphragm, which is opposite to the pressure relief groove and the pressure relief passage, and the on-off state of the pressure relief passage is opposite to the on-off state of the pressure relief passage.
Further, the pressure maintaining diaphragm mechanism comprises a pressure maintaining diaphragm arranged between the pressure maintaining channel and the pressure maintaining ring groove, a pressure maintaining spring used for driving the pressure maintaining diaphragm to cut off the pressure maintaining channel from the pressure maintaining ring groove is arranged on one side of the pressure maintaining diaphragm, which is opposite to the pressure maintaining ring groove, and one side of the pressure maintaining channel is opposite to the pressure maintaining diaphragm.
Further, a muffler is arranged at the lower part of the valve body, the muffler comprises a muffler shell, a muffler body is arranged in the muffler shell, muffler holes are arranged on the muffler body in an array manner, and a muffler filter screen is arranged between the muffler shell and the muffler body; the valve body is provided with a silencing through hole communicated with the silencer body, and the silencer body is provided with a discharge hole.
Further, the silencing through hole is positioned in the inner side wall of the inner air inlet groove.
Further, an active pressure building mechanism is arranged between the control port and the exhaust channel; the active pressure building mechanism comprises a pressure building valve core, a pressure building air inlet cavity communicated with the air inlet is arranged between the pressure building valve core and the valve body, a pressure building control cavity is arranged on one end face of the pressure building valve core, an air outlet of the pressure building air inlet cavity and an air inlet of the pressure building control cavity are both positioned on the other end face of the pressure building valve core, and a pressure building control mechanism for controlling on-off is arranged between the air outlet of the pressure building air inlet cavity and the air inlet of the pressure building control cavity;
the valve body is internally provided with a first communication channel communicated with the control port, a second communication channel communicated with the control cavity is arranged beside the first communication channel, and a pressure building valve used for enabling the first communication channel to be communicated with the second communication channel or enabling the pressure building control cavity to be communicated with the second communication channel is arranged between the first communication channel and the pressure building control cavity.
Further, the pressure building control mechanism comprises a static iron core fixedly arranged in the exhaust channel and a movable valve core installed in the exhaust channel in a sliding fit manner, a sealing gasket is correspondingly arranged on the end face of one end of the movable valve core facing the pressure building valve core and the air outlet of the pressure building air inlet cavity or the air inlet of the pressure building control cavity, and a pressure building spring for driving the movable valve core to be in contact fit with the pressure building valve core and sealing the air outlet of the pressure building air inlet cavity or the air inlet of the pressure building control cavity is arranged between the movable valve core and the inner wall of the exhaust channel; the static iron core is provided with a coil assembly outside, the movable valve core is in clearance fit with the exhaust channel, and a through hole is formed in the static iron core.
Further, the pressure-maintaining electromagnetic valve is a normally-open valve, and the pressure-reducing electromagnetic valve is a normally-closed valve.
The invention has the beneficial effects that:
according to the integrated relay valve with the ABS electromagnetic valve assembly, the two air outlet channels are respectively connected with the left braking air chamber and the right braking air chamber of the automobile, the pressure-reducing electromagnetic valve and the pressure-maintaining electromagnetic valve are utilized for controlling the on-off of the pressure-reducing diaphragm mechanism and the pressure-maintaining diaphragm mechanism, the control of a pressure-increasing process, a pressure-maintaining process and a pressure-reducing process can be realized, the requirement of automobile braking control can be met, and the integrated relay valve with the ABS electromagnetic valve assembly has the advantages of being compact in structure, fast in response time, low in weight and cost and the like.
Specifically, the control method for realizing the boosting process, the pressure maintaining process and the pressure reducing process by the integrated relay valve with ABS electromagnetic valve assembly comprises the following steps:
boosting: the pressure maintaining passage is disconnected, and the pressure reducing passage is communicated; the inner air inlet groove is communicated with the outer air inlet groove by utilizing a valve control mechanism, gas introduced by an air inlet enters the outer air inlet groove and then is divided into four paths of gas flows, wherein two paths of gas respectively enter a decompression diaphragm mechanism through a decompression passage, so that a decompression passage and a decompression ring groove are cut off, and the gas flows cannot be discharged from an exhaust passage; because the pressure maintaining channel is disconnected, the pressure maintaining channel is communicated with the pressure maintaining ring groove, and the other two paths of air flows respectively flow out of the air outlet channel after passing through the pressure maintaining channel and the pressure maintaining ring groove, so as to boost the brake air chamber;
and (3) pressure maintaining: the pressure maintaining passage is communicated, and the pressure reducing passage is communicated; the inner air inlet groove is communicated with the outer air inlet groove by utilizing a valve control mechanism, gas introduced from an air inlet enters the outer air inlet groove and then is divided into four paths of gas flows, wherein two paths of gas flows enter a decompression control mechanism through a decompression passage respectively, so that a decompression passage and a decompression ring groove are cut off, and the gas flows cannot be discharged from an exhaust passage; the other two paths enter the pressure maintaining diaphragm mechanism through the pressure maintaining passages respectively, so that the pressure maintaining passage and the pressure maintaining ring groove are cut off, air flow cannot be discharged from the exhaust passage and cannot enter the brake chamber from the air inlet, and the pressure maintaining of the brake chamber is realized;
decompression process: the pressure maintaining passage is communicated, and the pressure reducing passage is cut off; the inner air inlet groove is communicated with the outer air inlet groove by utilizing a valve control mechanism, gas introduced by an air inlet enters the outer air inlet groove and then is divided into four paths of gas flows, wherein two paths of gas respectively enter a pressure maintaining diaphragm mechanism through a pressure maintaining passage, so that the pressure maintaining passage and the pressure maintaining ring groove are cut off, and the gas cannot enter a brake chamber from the air inlet; the pressure reducing channel is cut off, so that the pressure reducing channel is communicated with the pressure reducing ring groove, and the air flow in the brake air chamber is discharged from the exhaust channel after passing through the pressure reducing channel and the pressure reducing ring groove, so that pressure reduction is realized.
By arranging the active pressure building mechanism, the active pressure building function can be realized, and the process is as follows: the control port does not have gas entering, at the moment, the gas entering through the gas inlet enters into the pressure building air inlet cavity, the pressure building control mechanism is controlled to be communicated with the gas outlet of the pressure building air inlet cavity and the gas inlet of the pressure building control cavity, the gas flow enters into the pressure building control cavity, then the pressure building valve is driven to be communicated with the pressure building control cavity and the second communication channel, and the first communication channel and the second communication channel are cut off, so that the gas entering through the gas inlet enters into the control cavity through the second communication channel, the valve control mechanism is controlled to be opened, and the inner air inlet groove and the outer air inlet groove are communicated; the pressurizing process, the pressure maintaining process and the depressurizing process are the same as above;
when the automobile is required to release the brake, the pressure-building control mechanism is controlled to cut off the air outlet of the pressure-building air inlet cavity and the air inlet of the pressure-building control cavity, and the air in the pressure-building control cavity is discharged through the air discharge channel; under the action of the larger air pressure of the control cavity, the first communication channel and the second communication channel are communicated, and after the air in the control cavity passes through the first communication channel and the second communication channel, the air is discharged through the control port to release the brake.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is a schematic diagram of an embodiment of an integrated relay valve with ABS solenoid valve assembly of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a cross-sectional view of section A-A of FIG. 1;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is a cross-sectional view of C-C of FIG. 1;
FIG. 6 is a schematic diagram of the structures of a pressure reducing diaphragm mechanism and a pressure maintaining diaphragm mechanism;
fig. 7 is a schematic structural view of an electromagnetic regulating valve constituted by a pressure reducing electromagnetic valve and a pressure maintaining electromagnetic valve.
Reference numerals illustrate:
1-a valve body; 2-a valve cover; 3-an inner air inlet groove; 4-an outer air inlet groove; 5-air inlet; 6-a vertical slide bar; 7-a piston; 8-a control chamber; 9-valve seat; 10-spring seat; 11-a valve assembly; 12-a spring; 13-control port; 14-an exhaust passage; 15-an air outlet channel; 16-a pressure relief passage; 17-a decompression ring groove; 18-a pressure maintaining channel; 19-pressure maintaining ring grooves; 20-a pressure relief passage; 21-a pressure reducing solenoid valve; 22-pressure maintaining passage; 23-pressure maintaining electromagnetic valve; 24-a pressure-reducing membrane; 25-a decompression spring; 26-a pressure relief passage; 27-pressure maintaining membrane; 28-pressure maintaining springs; 29-muffler housing; 30-muffler body; 31-a silencing filter screen; 32-a sound-deadening through hole; 33-a pressure building valve core; 34-building a pressure air inlet cavity; 35-building a pressure control cavity; 36-static iron core; 37-moving the valve core; 38-a gasket; 39-a pressure building spring; 40-coil assembly; 41-through holes; 42-a first communication channel; 43-a second communication channel; 44-building a pressure valve; 45-electromagnetic regulating valve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the invention, so that those skilled in the art may better understand the invention and practice it.
FIG. 1 is a schematic diagram of an embodiment of an integrated relay valve with ABS solenoid valve assembly according to the present invention. The integrated relay valve with the ABS electromagnetic valve assembly comprises a valve body 1, wherein a valve cover 2 is arranged on the upper end cover of the valve body 1; an inner air inlet groove 3 is formed in the upper end face of the valve body 2, and an outer air inlet groove 4 is formed outside the inner air inlet groove 3; an air inlet 5 is connected to the inner air inlet 3, and a valve control mechanism for controlling the communication or disconnection between the inner air inlet 3 and the outer air inlet 4 is arranged between the inner air inlet 3 and the outer air inlet 4.
The valve control mechanism of the embodiment comprises a vertical sliding rod 6 arranged on a valve cover 2, a piston 7 in sliding fit with the vertical sliding rod 6 is sleeved on the vertical sliding rod 6, the piston 7 is in airtight fit with the valve cover 2, and a control cavity 8 is formed between the piston 7 and the valve cover 2. The outer side wall of the inner air inlet groove 3 extends upwards and is located above the inner side wall of the inner air inlet groove, a valve seat 9 is arranged on the inner wall of the outer side wall of the inner air inlet groove 3, a spring seat 10 is arranged on the inner side wall of the inner air inlet groove 3, a valve assembly 11 is arranged between the spring seat 10 and the valve seat 9, a spring 12 sleeved on the spring seat 10 is arranged between the spring seat 10 and the valve assembly 11, and the valve assembly 11 is in airtight fit with the valve seat 9 under the action of the spring 12. The control chamber 8 is provided with a control opening 13 for introducing gas and driving the piston 7 to move downwards to separate the valve assembly 11 from the valve seat 9.
The valve body 1 is provided with an exhaust channel 14 and two air outlet channels 15, each air outlet channel 15 is provided with a pressure reducing channel 16 and a pressure maintaining channel 18, a pressure reducing annular groove 17 is arranged outside the pressure reducing channel 16, a pressure maintaining annular groove 19 is arranged outside the pressure maintaining channel 18, the pressure reducing annular groove 17 is communicated with the exhaust channel 14, and the pressure maintaining annular groove 19 is communicated with the outer air inlet groove 4. A pressure-reducing diaphragm mechanism for controlling the communication or the disconnection between the pressure-reducing channel 16 and the pressure-reducing ring groove 17 is arranged between the pressure-reducing channel 16 and the pressure-reducing ring groove 17, and a pressure-maintaining diaphragm mechanism for controlling the communication or the disconnection between the pressure-maintaining channel 18 and the pressure-maintaining ring groove 19 is arranged between the pressure-maintaining channel 18 and the pressure-maintaining ring groove 19.
A pressure reducing passage 20 for shutting off the pressure reducing passage 16 and the pressure reducing ring groove 17 is provided between the outer intake groove 4 and the pressure reducing diaphragm mechanism, and a pressure reducing solenoid valve 21 for controlling communication or shutting off of the pressure reducing passage 20 is provided. A pressure maintaining passage 22 for cutting off the pressure maintaining passage 18 and the pressure maintaining ring groove 19 is arranged between the outer air inlet groove 4 and the pressure maintaining diaphragm mechanism, and a pressure maintaining electromagnetic valve 23 for controlling the communication or cutting off of the pressure maintaining passage 22 is arranged on the pressure maintaining passage 22. The pressure reducing solenoid valve 21 in this embodiment is a normally open valve, and the pressure maintaining solenoid valve 23 is a normally closed valve, that is, the pressure reducing passage 20 is kept long open, and the pressure maintaining passage 22 is kept normally closed. The pressure reducing solenoid valve 21 and the pressure maintaining solenoid valve 23 which are arranged corresponding to the same air outlet channel 15 are integrally arranged to form an electromagnetic regulating valve 45.
Further, the pressure reducing diaphragm mechanism of the present embodiment includes a pressure reducing diaphragm 24 disposed between the pressure reducing channel 16 and the pressure reducing ring groove 17, a pressure reducing spring 25 for driving the pressure reducing diaphragm 24 to shut off the pressure reducing channel 16 from the pressure reducing ring groove 17 is disposed on a side of the pressure reducing diaphragm 24 facing away from the pressure reducing ring groove 17 and the pressure reducing channel 16, that is, the pressure reducing passageway 20 and the pressure reducing spring 25 are disposed on the same side of the pressure reducing diaphragm 24, when the pressure reducing passageway 20 is communicated, the gas introduced into the pressure reducing passageway 20 drives the pressure reducing diaphragm 24 to be pressed and fixed between the pressure reducing channel 16 and the pressure reducing ring groove 17 under the action of the pressure reducing spring 25, that is, the pressure reducing passageway 16 and the pressure reducing ring groove 17 are shut off at this time. The pressure relief passage 26 communicating with the exhaust passage 14 is provided on the side of the pressure relief diaphragm 24 facing away from the pressure relief ring groove 17 and the pressure relief passage 16 in this embodiment, and the on-off state of the pressure relief passage 26 is opposite to the on-off state of the pressure relief passage 20, so that when the pressure relief passage 20 is shut off, the pressure relief passage 26 communicates, and pressure relief of the pressure relief diaphragm 24 on the side facing away from the pressure relief ring groove 17 and the pressure relief passage 16 can be realized.
Further, the pressure maintaining diaphragm mechanism of the embodiment includes a pressure maintaining diaphragm 27 disposed between the pressure maintaining channel and the pressure maintaining ring groove, a pressure maintaining spring 28 for driving the pressure maintaining diaphragm 27 to cut off the pressure maintaining channel 18 from the pressure maintaining ring groove 19 is disposed on a side of the pressure maintaining diaphragm 27 facing away from the pressure maintaining ring groove 19 and the pressure maintaining channel 18, and the pressure maintaining passage 22 is disposed on a side of the pressure maintaining diaphragm 27 facing away from the pressure maintaining ring groove 19 and the pressure maintaining channel 18. When the pressure maintaining passage 22 is communicated, the gas introduced into the pressure maintaining passage 22 drives the pressure maintaining membrane 27 to be pressed and fixed between the pressure maintaining channel 18 and the pressure maintaining ring groove 19 under the action of the pressure maintaining spring 28, namely, the pressure maintaining channel 18 and the pressure maintaining ring groove 19 are cut off at the moment.
Further, a muffler is arranged at the lower part of the valve body 1 of the embodiment, the muffler comprises a muffler shell 29, a muffler body 30 is arranged in the muffler shell 29, muffler holes are arranged on the muffler body 30 in an array manner, and a muffler filter screen 31 is arranged between the muffler shell 29 and the muffler body 30; the valve body 1 is provided with a sound damping through hole 32 communicated with the muffler body 30. The muffler through hole 32 of the present embodiment is located inside the inner sidewall of the inner intake groove 3, and the muffler housing 29 is provided with a discharge hole.
Further, an active pressure-building mechanism is provided between the control port 13 and the exhaust passage 14 in the present embodiment. The active pressure-building mechanism of this embodiment includes a pressure-building valve core 33, a pressure-building air inlet cavity 34 communicated with the air inlet 5 is arranged between the pressure-building valve core 33 and the valve body 1, a pressure-building control cavity 35 is arranged on one end face of the pressure-building valve core 33, an air outlet of the pressure-building air inlet cavity 24 and an air inlet of the pressure-building control cavity 35 are both positioned on the other end face of the pressure-building valve core 33, and a pressure-building control mechanism for controlling on-off is arranged between an air outlet of the pressure-building air inlet cavity 34 and the air inlet of the pressure-building control cavity 35. The pressure building control mechanism of the embodiment comprises a static iron core 36 fixedly arranged in the exhaust channel 14 and a movable valve core 37 installed in the exhaust channel 14 in a sliding fit manner, wherein a sealing gasket 38 is arranged on the end face of one end of the movable valve core 37 facing the pressure building valve core 33 and corresponds to the air outlet of the pressure building air inlet cavity 34 or the air inlet of the pressure building control cavity 35, and a pressure building spring 39 for driving the movable valve core 37 to be in contact fit with the pressure building valve core 33 and sealing the air outlet of the pressure building air inlet cavity 24 or the air inlet of the pressure building control cavity 35 is arranged between the movable valve core 37 and the inner wall of the exhaust channel 14; the coil assembly 40 is arranged outside the static iron core 36, the movable valve core 37 is in clearance fit with the exhaust channel 14, and a through hole 41 is arranged in the static iron core 36. When the coil assembly 40 is not electrified, the movable valve core 37 is pressed on the air outlet of the pressure-building air inlet cavity 24 or the air inlet of the pressure-building control cavity 35 under the action of the pressure-building spring 39, and at this time, a gap is formed between the static iron core 36 and the movable valve core 37, and air can be discharged through the gap and the through hole 41; when the coil assembly 40 is energized, the movable valve element 37 is adsorbed on the stationary core 26, and at this time, the movable valve element 37 seals the through hole 41, and gas cannot be discharged from the exhaust passage.
A first communication channel 42 communicated with the control port 13 is correspondingly arranged in the valve body 1 of the embodiment and corresponds to the pressure build-up control cavity 35, a second communication channel 43 communicated with the control cavity 8 is arranged beside the first communication channel 42, and a pressure build-up valve 44 used for enabling the first communication channel 42 to be communicated with the second communication channel 43 or enabling the pressure build-up control cavity 35 to be communicated with the second communication channel 43 is arranged between the first communication channel 42 and the pressure build-up control cavity 35. Specifically, an annular groove is formed around the first communication channel 42, the second communication channel 43 is disposed in the annular groove, and when the air pressure in the pressure build-up control cavity 35 is high and the pressure build-up valve 44 is driven to seal the first communication channel 42, the second communication channel 43 is not sealed and is communicated with the pressure build-up control cavity 35; when the air pressure in the first communication channel 42 or the second communication channel 43 is large, the pressure build valve 44 is driven to seal the pressure build control chamber 35, so that the first communication channel 42 and the second communication channel 43 are communicated.
The integrated relay valve provided with the ABS electromagnetic valve assembly of the embodiment is characterized in that two air outlet channels are respectively connected with left and right brake air chambers of an automobile, and the pressure-reducing electromagnetic valve and the pressure-maintaining electromagnetic valve are utilized to control the on-off of the pressure-reducing diaphragm mechanism and the pressure-maintaining diaphragm mechanism, so that the control of a pressure-increasing process, a pressure-maintaining process and a pressure-reducing process can be realized, the requirement of automobile brake control can be met, and the integrated relay valve has the advantages of compact structure, quick response time, low weight cost and the like.
Specifically, the control method for realizing the boosting process, the pressure maintaining process and the pressure reducing process by the integrated relay valve with ABS electromagnetic valve assembly comprises the following steps:
boosting: the pressure maintaining passage is disconnected, and the pressure reducing passage is communicated; the inner air inlet groove is communicated with the outer air inlet groove by utilizing a valve control mechanism, gas introduced by an air inlet enters the outer air inlet groove and then is divided into four paths of gas flows, wherein two paths of gas respectively enter a decompression diaphragm mechanism through a decompression passage, so that a decompression passage and a decompression ring groove are cut off, and the gas flows cannot be discharged from an exhaust passage; because the pressure maintaining channel is disconnected, the pressure maintaining channel is communicated with the pressure maintaining ring groove, and the other two paths of air flows respectively flow out of the air outlet channel after passing through the pressure maintaining channel and the pressure maintaining ring groove, so as to boost the brake air chamber;
and (3) pressure maintaining: the pressure maintaining passage is communicated, and the pressure reducing passage is communicated; the inner air inlet groove is communicated with the outer air inlet groove by utilizing a valve control mechanism, gas introduced from an air inlet enters the outer air inlet groove and then is divided into four paths of gas flows, wherein two paths of gas flows enter a decompression control mechanism through a decompression passage respectively, so that a decompression passage and a decompression ring groove are cut off, and the gas flows cannot be discharged from an exhaust passage; the other two paths enter the pressure maintaining diaphragm mechanism through the pressure maintaining passages respectively, so that the pressure maintaining passage and the pressure maintaining ring groove are cut off, air flow cannot be discharged from the exhaust passage and cannot enter the brake chamber from the air inlet, and the pressure maintaining of the brake chamber is realized;
decompression process: the pressure maintaining passage is communicated, and the pressure reducing passage is cut off; the inner air inlet groove is communicated with the outer air inlet groove by utilizing a valve control mechanism, gas introduced by an air inlet enters the outer air inlet groove and then is divided into four paths of gas flows, wherein two paths of gas respectively enter a pressure maintaining diaphragm mechanism through a pressure maintaining passage, so that the pressure maintaining passage and the pressure maintaining ring groove are cut off, and the gas cannot enter a brake chamber from the air inlet; the pressure reducing channel is cut off, so that the pressure reducing channel is communicated with the pressure reducing ring groove, and the air flow in the brake air chamber is discharged from the exhaust channel after passing through the pressure reducing channel and the pressure reducing ring groove, so that pressure reduction is realized.
By arranging the active pressure building mechanism, the active pressure building function can be realized, and the process is as follows: the control port does not have gas entering, at the moment, the gas entering through the gas inlet enters into the pressure building air inlet cavity, the pressure building control mechanism is controlled to be communicated with the gas outlet of the pressure building air inlet cavity and the gas inlet of the pressure building control cavity, the gas flow enters into the pressure building control cavity, then the pressure building valve is driven to be communicated with the pressure building control cavity and the second communication channel, and the first communication channel and the second communication channel are cut off, so that the gas entering through the gas inlet enters into the control cavity through the second communication channel, the valve control mechanism is controlled to be opened, and the inner air inlet groove and the outer air inlet groove are communicated; the pressurizing process, the pressure maintaining process and the depressurizing process are the same as above;
when the automobile is required to release the brake, the pressure-building control mechanism is controlled to cut off the air outlet of the pressure-building air inlet cavity and the air inlet of the pressure-building control cavity, and the air in the pressure-building control cavity is discharged through the air discharge channel; under the action of the larger air pressure of the control cavity, the first communication channel and the second communication channel are communicated, and after the air in the control cavity passes through the first communication channel and the second communication channel, the air is discharged through the control port to release the brake.
The above-described embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention. The protection scope of the invention is subject to the claims.
Claims (8)
1. An integrated relay valve takes ABS solenoid valve assembly which characterized in that: the valve comprises a valve body, wherein a valve cover is arranged on an upper end cover of the valve body; an inner air inlet groove is formed in the upper end face of the valve body, and an outer air inlet groove is formed outside the inner air inlet groove; an air inlet is connected to the inner air inlet groove, and a valve control mechanism for controlling the communication or disconnection between the inner air inlet groove and the outer air inlet groove is arranged between the inner air inlet groove and the outer air inlet groove;
the valve body is provided with an exhaust channel and two air outlet channels, each air outlet channel is provided with a pressure reducing channel and a pressure maintaining channel, a pressure reducing ring groove is arranged outside the pressure reducing channel, a pressure maintaining ring groove is arranged outside the pressure maintaining channel, the pressure reducing ring groove is communicated with the exhaust channel, and the pressure maintaining ring groove is communicated with the outer air inlet groove; a pressure-maintaining diaphragm mechanism used for controlling the communication or cutting-off between the pressure-maintaining channel and the pressure-maintaining ring groove is arranged between the pressure-maintaining channel and the pressure-maintaining ring groove;
a pressure reducing passage for enabling the pressure reducing diaphragm mechanism to cut off the pressure reducing passage and the pressure reducing ring groove is arranged between the outer air inlet groove and the pressure reducing diaphragm mechanism, and a pressure reducing electromagnetic valve for controlling the pressure reducing passage to be communicated or cut off is arranged on the pressure reducing passage; a pressure maintaining passage for enabling the pressure maintaining diaphragm mechanism to cut off the pressure maintaining channel and the pressure maintaining ring groove is arranged between the outer air inlet groove and the pressure maintaining diaphragm mechanism, and a pressure maintaining electromagnetic valve for controlling the pressure maintaining passage to be communicated or cut off is arranged on the pressure maintaining passage;
the valve control mechanism comprises a vertical sliding rod arranged on the valve cover, a piston in sliding fit with the vertical sliding rod is sleeved on the vertical sliding rod, the piston is in airtight fit with the valve cover, and a control cavity is formed between the piston and the valve cover;
the valve assembly is sleeved on the spring seat, and is in airtight fit with the valve seat under the action of the spring;
the control cavity is provided with a control port for introducing gas and driving the piston to move downwards so as to separate the valve assembly from the valve seat;
an active pressure building mechanism is arranged between the control port and the exhaust channel; the active pressure building mechanism comprises a pressure building valve core, a pressure building air inlet cavity communicated with the air inlet is arranged between the pressure building valve core and the valve body, a pressure building control cavity is arranged on one end face of the pressure building valve core, an air outlet of the pressure building air inlet cavity and an air inlet of the pressure building control cavity are both positioned on the other end face of the pressure building valve core, and a pressure building control mechanism for controlling on-off is arranged between the air outlet of the pressure building air inlet cavity and the air inlet of the pressure building control cavity;
the valve body is internally provided with a first communication channel communicated with the control port, a second communication channel communicated with the control cavity is arranged beside the first communication channel, and a pressure building valve used for enabling the first communication channel to be communicated with the second communication channel or enabling the pressure building control cavity to be communicated with the second communication channel is arranged between the first communication channel and the pressure building control cavity.
2. The integrated relay valve with ABS solenoid valve assembly of claim 1 wherein: the pressure reducing diaphragm mechanism comprises a pressure reducing diaphragm arranged between the pressure reducing channel and the pressure reducing ring groove, a pressure reducing spring used for driving the pressure reducing diaphragm to cut off the pressure reducing channel from the pressure reducing ring groove is arranged on one side of the pressure reducing diaphragm, which is opposite to the pressure reducing ring groove, and one side of the pressure reducing channel, which is opposite to the pressure reducing diaphragm.
3. The integrated relay valve with ABS solenoid valve assembly according to claim 2 wherein: the pressure relief diaphragm is opposite to the pressure relief ring groove and one side of the pressure relief channel is provided with a pressure relief channel communicated with the exhaust channel, and the on-off state of the pressure relief channel is opposite to the on-off state of the pressure relief channel.
4. The integrated relay valve with ABS solenoid valve assembly of claim 1 wherein: the pressure maintaining diaphragm mechanism comprises a pressure maintaining diaphragm arranged between the pressure maintaining channel and the pressure maintaining ring groove, a pressure maintaining spring used for driving the pressure maintaining diaphragm to cut off the pressure maintaining channel from the pressure maintaining ring groove is arranged on one side of the pressure maintaining diaphragm, which is opposite to the pressure maintaining ring groove, and one side of the pressure maintaining channel is opposite to the pressure maintaining diaphragm.
5. The integrated relay valve with ABS solenoid valve assembly of claim 1 wherein: the lower part of the valve body is provided with a muffler, the muffler comprises a muffler shell, a muffler body is arranged in the muffler shell, the muffler body is provided with a muffler hole in an array, and a muffler filter screen is arranged between the muffler shell and the muffler body; the valve body is provided with a silencing through hole communicated with the silencer body, and the silencer body is provided with a discharge hole.
6. The integrated relay valve with ABS solenoid valve assembly of claim 5 wherein: the silencing through hole is positioned in the inner side wall of the inner air inlet groove.
7. The integrated relay valve with ABS solenoid valve assembly of claim 1 wherein: the pressure building control mechanism comprises a static iron core fixedly arranged in the exhaust channel and a movable valve core installed in the exhaust channel in a sliding fit manner, wherein a sealing gasket is correspondingly arranged on the end face of one end of the movable valve core facing the pressure building valve core and an air outlet of the pressure building air inlet cavity or an air inlet of the pressure building control cavity, and a pressure building spring for driving the movable valve core to be in contact fit with the pressure building valve core and sealing the air outlet of the pressure building air inlet cavity or the air inlet of the pressure building control cavity is arranged between the movable valve core and the inner wall of the exhaust channel; the static iron core is provided with a coil assembly outside, the movable valve core is in clearance fit with the exhaust channel, and a through hole is formed in the static iron core.
8. The integrated relay valve with ABS solenoid valve assembly of claim 1 wherein: the pressure-maintaining electromagnetic valve is a normally-open valve, and the pressure-maintaining electromagnetic valve is a normally-closed valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710939590.8A CN107600059B (en) | 2017-10-11 | 2017-10-11 | Integrated relay valve with ABS electromagnetic valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710939590.8A CN107600059B (en) | 2017-10-11 | 2017-10-11 | Integrated relay valve with ABS electromagnetic valve assembly |
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| Publication Number | Publication Date |
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| CN107600059A CN107600059A (en) | 2018-01-19 |
| CN107600059B true CN107600059B (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710939590.8A Active CN107600059B (en) | 2017-10-11 | 2017-10-11 | Integrated relay valve with ABS electromagnetic valve assembly |
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| Country | Link |
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| CN (1) | CN107600059B (en) |
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| GB1490013A (en) * | 1974-01-25 | 1977-10-26 | Knorr Bremse Gmbh | Relay valve arrangement having rapid response |
| WO1990006876A1 (en) * | 1988-12-20 | 1990-06-28 | Graham John M | Improved fluid actuated brake system |
| EP0994003A2 (en) * | 1998-10-14 | 2000-04-19 | WABCO GmbH | Valve device |
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|---|---|
| CN107600059A (en) | 2018-01-19 |
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