CN216033596U - Axle control valve, axle, control system and commercial car - Google Patents
Axle control valve, axle, control system and commercial car Download PDFInfo
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- CN216033596U CN216033596U CN202121512276.XU CN202121512276U CN216033596U CN 216033596 U CN216033596 U CN 216033596U CN 202121512276 U CN202121512276 U CN 202121512276U CN 216033596 U CN216033596 U CN 216033596U
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Abstract
The utility model relates to the field of commercial vehicles, in particular to an axle control valve, an axle, a control system and a commercial vehicle. The axle control valve comprises a valve body assembly, a valve core assembly and an electromagnetic valve; the valve body assembly is provided with a control port, an air inlet channel and an air outlet channel, a first air channel is arranged on the valve body part positioned between the first accommodating cavity and the second accommodating cavity, a second control cavity can be formed between the valve core assembly and the valve body assembly, the control port is communicated with the second control cavity, and the second control cavity is used for receiving first air pressure of filled gas; the valve core assembly is in a telescopic state and is used for controlling the first air channel to be communicated with one of the air inlet channel and the air outlet channel according to the first air pressure; the electromagnetic valve is used for controlling the on-off of the second control cavity. First air pressure in the second control cavity is controlled through the electromagnetic valve, so that when the commercial vehicle is in a heavy-load state, the air source of the commercial vehicle can inflate the air bag through the axle control valve of the embodiment, and the rising action of the axle is achieved.
Description
Technical Field
The utility model relates to the field of commercial vehicles, in particular to an axle control valve, an axle, a control system and a commercial vehicle.
Background
Air suspension systems for commercial vehicles, which typically employ at least a level valve and an air bag, wherein the level valve is used to inflate and deflate the air bag.
In the prior art, the name is provided: a altitude valve assembly having the application serial No.: 201520648922.3. In the document, the height valve assembly comprises a valve body, a swing arm and a swing rod, when the load of a vehicle is increased, an air bag is extruded, the pressure of the air bag is increased, and the vehicle body with the height valve descends; when the vehicle load decreases, the airbag pressure decreases and the vehicle body with the height valve rises.
However, the height valve assembly in the prior art has the problem that the vehicle body cannot be controlled to ascend when the vehicle load is increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that in the prior art, when the load of a vehicle is increased, the vehicle body cannot be controlled to ascend, the utility model provides an axle control valve, an axle, a control system and a commercial vehicle.
In order to achieve the purpose, the utility model adopts the technical scheme that:
according to one aspect of the utility model, an axle control valve is provided, comprising a valve body assembly, a valve core assembly and a solenoid valve;
a first accommodating cavity and a second accommodating cavity are arranged in the valve body assembly, and the valve core assembly is arranged in the first accommodating cavity;
the valve body assembly is provided with a control port, an air inlet channel and an air outlet channel, a first air channel is arranged on the valve body part between the first accommodating cavity and the second accommodating cavity, a second control cavity can be formed between the valve core assembly and the valve body assembly, the control port is communicated with the second control cavity, and the second control cavity is used for receiving first air pressure of filled gas;
the valve core assembly is in a telescopic state and is used for controlling the first air channel to be communicated with one of the air inlet channel and the air outlet channel according to the first air pressure;
the electromagnetic valve is used for controlling the on-off of the second control cavity.
Further, the device also comprises a control component;
the control assembly is arranged in the second accommodating cavity;
a second air channel and an exhaust channel are arranged on the valve body assembly between the first accommodating cavity and the second accommodating cavity, the second air channel and the exhaust channel are isolated by the control assembly and the valve body assembly, a first control cavity, a second air inlet cavity and a first output cavity can be formed between the control assembly and the valve body assembly, the second air channel is respectively communicated with the first air channel and the second air inlet cavity, the first air channel is communicated with the first control cavity, and the first control cavity is used for receiving a second air pressure of filled gas;
the control assembly is in a telescopic state and is used for controlling the conduction of the second air inlet cavity and the first output cavity according to the second air pressure.
Further, the system also comprises at least one group of switching components;
at least one third accommodating cavity is further arranged in the valve body assembly, the second accommodating cavity is positioned between any one of the third accommodating cavities and the first accommodating cavity, and any one of the third accommodating cavities is used for accommodating one group of the switching assemblies respectively;
any one of the third accommodating cavities is communicated with the second accommodating cavity through at least a third air passage, the third air passage penetrates through the valve body assembly positioned between the second accommodating cavity and one of the third accommodating cavities, a switching cavity, a second output cavity and a third air inlet cavity can be formed among the valve body assemblies by any one group of switching assemblies respectively, the switching cavity is communicated with at least the third air passage, and any one of the switching cavities is used for receiving third air pressure of filled gas;
any group of the switching assemblies is in a telescopic state, and any group of the switching assemblies is used for controlling the conduction of one of the second output cavities and one of the third air inlet cavities according to the third air pressure.
Further, a mounting opening and a second exhaust channel are formed in the valve body assembly, the electromagnetic valve is arranged at the mounting opening, and the mounting opening is communicated with the second control cavity;
and a conducting state and a blocking state are arranged between the second exhaust channel and the mounting port, and the second exhaust channel and the mounting port are switched between the conducting state and the blocking state through the electromagnetic valve.
Furthermore, the valve core assembly comprises a limiting seat, a first spring, a spring seat, a piston ejector rod, a second spring, a connecting seat, an ejector rod seat, a valve and a third spring;
the ejector rod seat is fixedly arranged in the valve body assembly and is provided with a first inner cavity and a second inner cavity which are arranged along the axial direction, the valve and the third spring are respectively arranged in the second inner cavity, a gas guide port is formed at the communication part of the first inner cavity and the second inner cavity, and the valve is telescopically covered at the gas guide port through the third spring;
the first spring is arranged between the limiting column and the spring seat, the second spring is arranged between the spring seat and the connecting seat, the spring seat is axially provided with a third inner cavity, one end of the piston ejector rod is arranged in the third inner cavity, and the other end of the piston ejector rod sequentially penetrates through the spring seat, the connecting seat and the first inner cavity in a movable manner;
the connecting seat, the ejector rod seat and the valve body assembly are limited into the second control cavity together;
the gap between the piston mandril and the mandril seat at the air guide opening is a first gap, and the first gap, the second inner cavity and the first air passage can be communicated;
the piston mandril is communicated with the air guide channel, the air guide channel and the radial surface of the piston mandril form a first through hole and a second through hole, the first through hole is communicated with the first air channel, the second through hole is communicated with the third inner cavity, a third through hole is radially arranged on the spring seat, a gap between the spring seat and the valve body assembly is a second gap, the second gap can be communicated with the third inner cavity through the third through hole, a gap between the spring seat and the limiting seat is a third gap, and the third gap is communicated with the second gap.
Further, the control assembly comprises a fourth spring, a control piston and a control seat;
the control seat is fixedly arranged in the second accommodating cavity, the control seat is provided with a fourth inner cavity, one end of the control piston is movably arranged in the fourth inner cavity, the other end of the control piston is arranged outside the fourth inner cavity, and the fourth spring is arranged between the control piston and the valve body assembly;
the valve body assembly and the control piston may define the first control chamber therebetween;
the second air inlet cavity and the first output cavity can be formed between the valve body assembly and the control seat, and the second air inlet cavity and the first output cavity can be communicated.
Further, any group of the switching assemblies comprises a fifth spring, a switching piston and a switching seat;
the switching seat is fixedly arranged in the third accommodating cavity, a fifth inner cavity is arranged in the switching seat, the switching piston is movably arranged in the fifth inner cavity, and the fifth spring is arranged between the switching piston and the valve body assembly;
the switching cavity can be formed between the switching piston and the switching seat, wherein a switching through hole is formed in the switching seat in the radial direction, and the third air channel, the switching through hole and the switching cavity are communicated.
According to one aspect of the utility model, an axle is provided comprising an axle control valve as described above.
According to one aspect of the utility model, a control system is provided comprising an axle control valve as described above.
According to one aspect of the utility model, a commercial vehicle is provided, comprising an axle control valve as described above.
The technical scheme has the following advantages or beneficial effects:
according to the axle control valve provided by the utility model, the first air pressure in the second control cavity is controlled through the electromagnetic valve, so that when a commercial vehicle is in a heavy-load state, an air source of the commercial vehicle can inflate an air bag through the axle control valve, and the lifting action of an axle is realized.
Drawings
Fig. 1 is a schematic structural diagram of an axle control valve provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a valve body assembly provided in embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram of an axle control valve from another perspective provided by embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a valve core assembly provided in embodiment 1 of the present invention;
fig. 5 is a schematic view of a split structure of the valve core assembly provided in embodiment 1 of the present invention;
fig. 6 is a schematic structural diagram of a control assembly according to embodiment 1 of the present invention;
fig. 7 is a schematic view of a split structure of a control assembly provided in embodiment 1 of the present invention;
fig. 8 is a schematic structural diagram of a switching element according to embodiment 1 of the present invention;
fig. 9 is a schematic view of a split structure of a switching assembly according to embodiment 1 of the present invention.
Detailed Description
Example 1:
in the present embodiment, referring to fig. 1 to 3, an axle control valve is provided, which includes a valve body assembly 1, a valve core assembly 2 and a solenoid valve 3;
a first accommodating cavity 001 and a second accommodating cavity 002 are arranged in the valve body assembly 1, and the valve core assembly 2 is arranged in the first accommodating cavity 001;
the valve body assembly 1 is provided with a control port 101, an inflation channel 102 and an deflation channel 103, a first air passage 104 is arranged on a valve body part between the first accommodating cavity 001 and the second accommodating cavity 002, a second control cavity 003 can be formed between the valve core assembly 2 and the valve body assembly 1, the control port 101 is communicated with the second control cavity 003, wherein the second control cavity 003 is used for receiving a first air pressure of filled gas;
the valve core assembly 2 is in a telescopic state, and the valve core assembly 2 is used for controlling the first air passage 104 to be communicated with one of the inflation channel 102 and the deflation channel 103 according to the first air pressure;
the electromagnetic valve 3 is used for controlling the on-off of the second control chamber 003.
In the axle control valve in this embodiment, the first air passage 104 is communicated with the inflation channel 102, and the first air passage 104 is blocked from the deflation channel 103, so that the air bag is inflated; on the contrary, the first air passage 104 and the inflation passage 102 are cut off, and the first air passage 104 and the deflation passage 103 are communicated, so that the air discharge action of the air bag is realized.
The axle control valve in this embodiment contains a gas, typically compressed air in the commercial vehicle field, through the second control chamber 003. When the second control chamber 003 is filled with gas and the first pressure of the gas satisfies the predetermined pressure, the first air passage 104 and the inflation passage 102 are blocked and the first air passage 104 and the deflation passage 103 are conducted by the first pressure. When the first pressure of the gas in the second control chamber 003 does not satisfy the predetermined pressure, the first gas passage 104 is connected to the inflation channel 102, and the first gas passage 104 is disconnected from the deflation channel 103.
In the axle control valve in this embodiment, the second control chamber 003 of the axle control valve is opened and closed with the atmosphere through the electromagnetic valve 3, wherein when the spool of the electromagnetic valve 3 is in the conducting state, the second control chamber 003 is communicated with the atmosphere through the electromagnetic valve 3 in the conducting state, and when the spool of the electromagnetic valve 3 is in the blocking state, the second control chamber 003 is blocked with the atmosphere through the electromagnetic valve 3 in the blocking state.
In practical application of the axle control valve in the present embodiment, the following three application modes are generally available:
mode a of use: the commercial vehicle is in a heavy-load state, at the moment, the valve core of the electromagnetic valve 3 can be in a cut-off state in a manual control or automatic control mode, the air source of the commercial vehicle inflates the second control cavity 003, and at the moment, the first air pressure of the air in the second control cavity 003 is changed from being smaller than the preset pressure to being larger than the preset pressure; when the first air pressure meets the preset pressure (i.e. the first air pressure is equal to the preset pressure or the first air pressure is greater than the preset pressure), the first air passage 104 and the inflation channel 102 are cut off, so that the compressed air cannot inflate the airbag, and meanwhile, the first air passage 104 and the deflation channel 103 are communicated, so that the air in the airbag is discharged out of the airbag through the deflation channel 103, thereby realizing the axle descending action.
Mode B of use: when the commercial vehicle is in a light load state, the valve core of the electromagnetic valve 3 can be in a conducting state in a manual control or automatic control mode, the gas source of the commercial vehicle stops inflating into the second control cavity 003, and meanwhile, the gas in the second control cavity 003 is discharged into the atmosphere through the electromagnetic valve 3, so that the first air pressure of the gas in the second control cavity 003 is changed from being greater than the preset pressure to being smaller than the preset pressure; when the first air pressure does not meet the preset pressure (namely the first air pressure is smaller than the preset pressure), the first air passage 104 and the inflation channel 102 are communicated, so that the compressed air inflates the air bag, and meanwhile, the first air passage 104 and the deflation channel 103 are cut off, so that the air in the air bag is prevented from being discharged out of the air bag through the deflation channel 103, and the lifting action of the axle is realized.
The use mode C: the commercial vehicle is in a heavy-load state, at the moment, the valve core of the electromagnetic valve 3 can be in a conducting state in a manual control or automatic control mode, the gas source of the commercial vehicle stops inflating into the second control cavity 003, and meanwhile, the gas in the second control cavity 003 is discharged into the atmosphere through the electromagnetic valve 3, so that the first air pressure of the gas in the second control cavity 003 is changed from being greater than the preset pressure to being smaller than the preset pressure; when the first air pressure does not meet the preset pressure (namely the first air pressure is smaller than the preset pressure), the first air passage 104 and the inflation channel 102 are communicated, so that the compressed air inflates the air bag, and meanwhile, the first air passage 104 and the deflation channel 103 are cut off, so that the air in the air bag is prevented from being discharged out of the air bag through the deflation channel 103, and the lifting action of the axle is realized.
It should be understood that the first air passage 104 is not a passage for discharging the gas inside the airbag to the deflation passage 103, and hereinafter, an 'exhaust passage' is proposed for discharging the gas inside the airbag to the deflation passage 103.
In the prior art, when the load of a vehicle is increased, an air bag is extruded, the pressure of the air bag is increased, and a vehicle body with a height valve is lowered; when the vehicle load decreases, the airbag pressure decreases and the vehicle body with the height valve rises. However, this conventional technique cannot achieve the effect of lifting the vehicle body when the vehicle load increases.
In the use mode C of the axle control valve in this embodiment, the electromagnetic valve 3 controls the first air pressure in the second control chamber 003, so that when the commercial vehicle is in a heavy-load state (which is equivalent to the increase of the vehicle load in the prior art), the air source of the commercial vehicle can inflate the air bag through the axle control valve in this embodiment, thereby realizing the raising action of the axle (which is equivalent to the raising action of the vehicle body in the prior art).
Therefore, the axle control valve provided by the embodiment solves the problem that the vehicle body cannot be controlled to ascend when the load of the vehicle is increased in the prior art.
Specifically, referring to fig. 1 to 3, the valve body assembly 1 is provided with a mounting opening 105 and a second bleed passage 106, the solenoid valve 3 is provided at the mounting opening 105, wherein the mounting opening 105 is communicated with the second control chamber 003;
the second air bleeding passage 106 and the mounting port 105 have a conducting state and a blocking state therebetween, and the second air bleeding passage 106 and the mounting port 105 are switched between the conducting state and the blocking state by the solenoid valve 3.
The mounting opening 105 extends into the valve body assembly 1 to form a mounting cavity, and the mounting cavity is communicated with the second control cavity 003; meanwhile, before the solenoid valve 3 is not arranged at the mounting port 105, the mounting cavity is communicated with the second air bleeding channel 106, and after the solenoid valve 3 is arranged at the mounting port 105, the mounting cavity and the second air bleeding channel 106 are blocked by the solenoid valve 3; when the valve core of the electromagnetic valve 3 is in a conducting state, the second control cavity 003 is communicated with the atmosphere through the mounting hole 105, the electromagnetic valve 3 and the second bleed passage 106, and when the valve core of the electromagnetic valve 3 is in a blocking state, the space between the second bleed passage 106 and the mounting hole 105 is blocked by the electromagnetic valve 3, so that the space between the second control cavity 003 and the atmosphere is blocked by the electromagnetic valve 3.
It should be understood that the second bleed passage 106 and the surface of the valve body assembly 1 may form a vent for communicating atmospheric air to the second bleed passage 106.
Specifically, referring to fig. 1 to 5, the valve core assembly 2 includes a limit seat 201, a first spring 202, a spring seat 203, a piston rod 204, a second spring 205, a connecting seat 206, a rod seat 207, a valve 208, and a third spring 209;
the ejector rod seat 207 is fixedly arranged in the valve body assembly 1, the ejector rod seat 207 is provided with a first inner cavity 210 and a second inner cavity 211 which are arranged along the axial direction, a valve 208 and a third spring 209 are respectively arranged in the second inner cavity 211, a gas guide port 212 is formed at the communication part of the first inner cavity 210 and the second inner cavity 211, and the valve 208 is telescopically covered at the gas guide port 212 through the third spring 209;
a first spring 202 is arranged between the limiting seat 201 and the spring seat 203, a second spring 205 is arranged between the spring seat 203 and the connecting seat 206, the spring seat 203 is axially provided with a third inner cavity 213, one end of the piston top rod 204 is arranged in the third inner cavity 213, and the other end of the piston top rod 204 penetrates through the spring seat 203, the connecting seat 206 and the first inner cavity 210 in a movable manner in sequence;
a second control cavity 003 is defined among the connecting seat 206, the ejector rod seat 207 and the valve body assembly 1;
the gap between the piston rod 204 and the rod seat 207 at the air guide port 212 is a first gap, and the first gap, the second inner cavity 211 and the first air passage 104 can be communicated;
the piston mandril 204 is communicated by an air guide channel 214, the air guide channel 214 and the radial surface of the piston mandril 204 form a first through hole 215 and a second through hole 216, the first through hole 215 and the first air channel 104 can be communicated, the second through hole 216 and the third inner cavity 213 are communicated, a third through hole 217 is radially arranged on the spring seat 203, the gap between the spring seat 203 and the valve body assembly 1 is a second gap, the second gap can be communicated with the third inner cavity 213 through the third through hole 217, the gap between the spring seat 203 and the limiting seat 201 is a third gap, and the third gap is communicated with the second gap.
The control port 101 extends into the valve body assembly 1 to form a control channel, and the control port 101 is used for connecting an air source of a commercial vehicle, so that the air source of the commercial vehicle can provide air for the control port 101; and, the inflation channel 102 should form an air inlet with the surface of the valve body assembly 1, the air inlet being used for connecting with an air supply of a commercial vehicle, so that the air supply of the commercial vehicle can provide air to the air inlet.
In this embodiment, gas may be injected into the second control chamber 003 through the control port 101, when the valve element of the solenoid valve 3 is in a cut-off state, the first air pressure of the gas in the second control chamber 003 is greater than the predetermined air pressure, the first air pressure pushes the connecting seat 206, so that the distance between the connecting seat 206 and the spring seat 203 is reduced, the second spring 205 therein is compressed, meanwhile, the distance between the connecting seat 206 and the ejector rod seat 207 is increased (i.e. the volume of the second control chamber 003 is increased), the first air pressure continues to push the connecting seat 206, after the connecting seat 206 contacts the spring seat 203, the connecting seat 206 pushes the spring seat 203 under the action of the first air pressure, so that the piston rod 204 connected to the spring seat 203 moves along the direction from the ejector rod seat 207 to the stopper seat 201, the first spring 202 is compressed, the valve 208 is pressed by the third spring 209 and covers the gas guide port 212, and the piston rod 204 and the valve 208 are separated from each other, at this time, the valve 208 covers the gas guide port 212, so that the first gas passage 104 is cut off from the gas charging passage 102, and the gas injected from the gas inlet is retained at the valve 208 and cannot enter the first passage; meanwhile, the first through hole 215 is originally communicated with the second inner cavity 211, and is changed into a state that the first channel is cut off from the second inner cavity 211, and the third through hole 217 and the third gap are cut off by the valve body assembly 1, and is changed into a state that the third through hole 217 is communicated with the third gap, the first air passage 104 is communicated with the air guide channel 214 through the first through hole 215, so that the first air passage 104 is communicated with the air discharge channel 103 (including the air guide channel 214, the third inner cavity 213, the third through hole 217 and the third gap). It will be appreciated that the bleed passage 103 forms a vent with the surface of the valve body assembly 1, through which the third gap communicates with the atmosphere.
In this embodiment, when the valve core of the solenoid valve 3 is in a conducting state, the first air pressure of the gas in the second control chamber 003 is less than the predetermined air pressure, under the action of the elastic force of the first spring 202, the spring seat 203 pushes the connecting seat 206 to move along the direction from the limit seat 201 to the ejector rod seat 207, the first spring 202 is in a relaxed state of releasing the elastic force, meanwhile, under the action of the elastic force of the second spring 205, the connecting seat 206 continues to move along the direction from the limit seat 201 to the ejector rod seat 207, the second spring 205 is in a relaxed state of releasing the elastic force, at this time, the distance between the connecting seat 206 and the ejector rod seat 207 is reduced, that is, the volume of the second control chamber 003 is reduced, the piston ejector rod 204 is driven by the spring seat 203 to move along the direction from the limit seat 201 to the ejector rod seat 207, the piston ejector rod 204 presses the valve 208, the valve 208 generates a movement trend along the direction from the limit seat 201 to the ejector rod seat 207, and forces the third spring 209 to be compressed, so that a gap is formed between the valve 208 and the gas guide port 212, and the gas injected from the gas inlet can be injected into the first gas passage 104 through the gap and the first gap, and then the airbag is inflated through the first gas passage 104; at this time, originally, the third through hole 217 and the third gap are in a conduction state, and are changed into a state where the third through hole 217 and the third gap are cut off by the valve body assembly 1, and originally, the first through hole 215 and the second inner cavity 211 are cut off, and are changed into a state where the first through hole 215 and the second inner cavity 211 are communicated, and the gas injected from the gas inlet can only reach the third inner cavity 213 from the first through hole 215, but cannot be discharged to the third gap from the third inner cavity 213 (i.e., the state where the gas charging channel 102 and the gas discharging channel 103 are cut off).
It should be understood that two sealing rings are arranged in the gap between the top rod seat 207 at the first air duct 104 and the valve body assembly 1, and the mouth formed by the first air duct 104 and the top rod seat 207 is limited between the two sealing rings, so as to avoid the gas from overflowing from the gap between the top rod seat 207 and the valve body assembly 1; further, one of the seal rings is close to the second control chamber 003, so that the gas in the second control chamber 003 can be prevented from escaping from the gap.
It will be appreciated that a sealing ring is provided in the gap between the ram seat 207 and the piston ram 204, and the mouth formed by the first gas passage 104 and the ram seat 207 is located between the sealing ring and the valve 208, so as to avoid gas escaping from the gap.
It should be understood that a sealing ring is arranged in the gap between the piston top rod 204 and the connecting seat 206, so that the gas in the third inner cavity 213 is prevented from overflowing from the gap, and the gas in the second control cavity 003 can be prevented from entering the third inner cavity 213;
it will be appreciated that a sealing ring is provided in the gap between the connecting socket 206 and the valve body assembly 1 to prevent gas in the second control chamber 003 from escaping through the gap.
It will be appreciated that a sealing ring is provided in the gap between the spring seat 203 and the piston ram 204 to prevent gas in the third internal chamber 213 from escaping through the gap.
Further, referring to fig. 1-3, 6, and 7, the axle control valve further includes a control assembly 4;
the control component 4 is arranged in the second accommodating cavity 002;
a second air channel 107 and an exhaust channel 108 are arranged on the valve body assembly 1 between the first accommodating cavity 001 and the second accommodating cavity 002, the second air channel 107 and the exhaust channel 108 are isolated by the control assembly 4 and the valve body assembly 1, a first control cavity 004, a second air inlet cavity 005 and a first output cavity 006 can be formed between the control assembly 4 and the valve body assembly 1, the second air channel 107 is respectively communicated with the first air channel 104 and the second air inlet cavity 005, the first air channel 104 is communicated with the first control cavity 004, wherein the first control cavity 004 is used for receiving a second air pressure of the filled gas;
the control component 4 is in a telescopic state, and the control component 4 is used for controlling the conduction of the second air inlet cavity 005 and the first output cavity 006 according to the second air pressure.
The aforementioned first air passage 104 mainly functions to guide the air from the air inlet to each air bag, in other words, for the air bag, the first air passage 104 is the air source for inflating the air bag.
The connection and disconnection between the first air passage 104 and the air bag are realized by adopting the control component 4; in other words, the control unit 4 is a 'valve' between the first receiving chamber 001 and the second receiving chamber 002, at least for controlling the gas input from the first receiving chamber 001 to inflate one of the air bags through the second receiving chamber 002.
A first control cavity 004 formed between the control assembly 4 and the valve body assembly 1 is communicated with a first air passage 104, and gas can be injected into the first control cavity 004 from the first air passage 104; meanwhile, the second air passage 107 communicates with the first air passage 104 and the second intake chamber 005, and gas can be injected from the first air passage 104 and the second air passage 107 into the second intake chamber 005.
The air discharge passage 108 is communicated with the air discharge passage 103, and the air discharge passage 108 functions to guide the air in the air bag to the air discharge passage 103, thereby realizing the air discharge action of the air bag.
When the second air pressure of the gas in the first control chamber 004 meets the second preset air pressure (the second air pressure is equal to or greater than the second preset air pressure), the exhaust passage 108 and the first output chamber 006 are cut off, the second air inlet chamber 005 and the first output chamber 006 are communicated, and the gas in the second air inlet chamber 005 is injected into one of the air bags through the first output chamber 006 to realize the inflation action of the one of the air bags; when the second air pressure of the gas in the first control chamber 004 does not satisfy the second preset air pressure (the second air pressure is smaller than the second preset air pressure), the exhaust passage 108 and the first output chamber 006 are communicated, the second air inlet chamber 005 and the first output chamber 006 are cut off, and the gas in the airbag enters a gap between the spring seat 203 and the limit seat 201 in the first accommodating chamber 001 along the first output chamber 006 and the exhaust passage 108 and is exhausted to the atmosphere after entering the deflation passage 103.
Specifically, referring to fig. 6 and 7, the control assembly 4 includes a fourth spring 401, a control piston 402 and a control seat 403;
the control seat 403 is fixedly arranged in the second accommodating cavity 002, the control seat 403 is provided with a fourth inner cavity 404, one end of the control piston 402 is movably arranged in the fourth inner cavity 404, the other end of the control piston 402 is arranged outside the fourth inner cavity 404, and the fourth spring 401 is arranged between the control piston 402 and the valve body assembly 1;
a first control chamber 004 may be formed between the valve body assembly 1 and the control piston 402;
a second inlet chamber 005 and a first outlet chamber 006 may be formed between the valve body assembly 1 and the control seat 403, and the second inlet chamber 005 and the first outlet chamber 006 may communicate.
The control seat 403 is fixedly arranged in the second accommodating cavity 002, one end of the control piston 402 can be inserted into the fourth inner cavity 404, and the control piston 402 is in a telescopic state relative to the control seat 403; one end of the fourth spring 401 contacts the valve body assembly 1 and the other end of the fourth spring 401 contacts the control piston 402 located outside the fourth internal cavity 404.
A first control chamber 004 may be formed between the control piston 402 outside the fourth internal chamber 404 and the valve body assembly 1, and the first gas passage 104 and the first control chamber 004 communicate.
When the second air pressure of the gas in the first control chamber 004 satisfies the second preset pressure, the control piston 402 driven by the second air pressure moves along the direction from the control seat 403 to the fourth spring 401, the control piston 402 compresses the fourth spring 401, at this time, along with the movement of the control piston 402 relative to the control seat 403, the second air inlet chamber 005 and the first output chamber 006 are changed into a conducting state in the fourth inner chamber 404, the exhaust passage 108 and the first output chamber 006 are changed into a blocking state, the gas in the second air passage 107 can flow from the second air inlet chamber 005 to the first output chamber 006, and then the gas can be injected into one of the air bags through the first output chamber 006, and the inflation operation of one of the air bags is completed.
When the second air pressure of the gas in the first control chamber 004 does not satisfy the second preset pressure, the control piston 402 loses the second air pressure, the elastic force of the fourth spring 401 drives the control piston 402 to move along the direction from the fourth spring 401 to the control seat 403, the fourth spring 401 is changed into a relaxation state, at this time, along with the movement of the control piston 402 relative to the control seat 403, the second air inlet chamber 005 and the first output chamber 006 are changed into a blocking state in the fourth inner chamber 404, the exhaust passage 108 and the first output chamber 006 are changed into a conducting state, and the gas in one of the air bags can be exhausted to the atmosphere through the first output chamber 006, the exhaust passage 108 and the exhaust passage 103.
It should be understood that the exhaust passage 108 should simultaneously pass through 'the valve body assembly 1' and the control seat 403 between the first receiving chamber 001 and the second receiving chamber 002.
It will be appreciated that a sealing ring is provided in the gap between the control piston 402 and the valve body assembly 1 at the first control chamber 004 to prevent escape of gas from the first control chamber 004.
It should be understood that the control socket 403 is provided in four sections, the first section of the control socket is close to the fourth spring 401, the fourth section of the control socket is penetrated by the exhaust passage 108, the second section of the control socket and the third section of the control socket are respectively provided between the first section of the control socket and the fourth section of the control socket, the second section of the control socket is positioned between the first section of the control socket and the third section of the control socket, and the third section of the control socket is positioned between the second section of the control socket and the fourth section of the control socket; gaskets are respectively arranged between two adjacent sections of the control seats 403, wherein the outer circumference of any one of the gaskets can contact the valve body assembly 1, and the inner circumference of any one of the gaskets can contact the control piston 402; the sealing gasket between the first section of control seat and the second section of control seat is a first sealing gasket, the sealing gasket between the second section of control seat and the third section of control seat is a second sealing gasket, and the sealing gasket between the third section of control seat and the fourth section of control seat is a third sealing gasket; after the control piston 402 moves along the direction from the control seat 403 to the fourth spring 401, the first output chamber 006 is limited between the first gasket and the third gasket, so as to prevent the gas in the first output chamber 006 from overflowing towards the exhaust passage 108, at this time, the third gasket and the first gasket are respectively used for sealing the gap between the control piston 402 and the piston seat and the gap between the control seat 403 and the valve body assembly 1, but a gap for gas circulation is formed between the second gasket and the control piston 402 at one section; after the control piston 402 moves in the direction from the fourth spring 401 to the control seat 403, the first output chamber 006 may pass through the range defined by the first gasket and the third gasket, so that the first output chamber 006 may communicate with the exhaust passage 108, at which time, the first gasket and the second gasket are respectively used to seal the gap between the control piston 402 and the piston seat, but the third gasket and the control piston 402 at one section form a gap for gas communication, and the gas in one air bag flows into the exhaust passage 108 at least through the gap.
Further, referring to fig. 1-3, 8, 9, the axle control valve further includes at least one set of shift assemblies 5;
at least one third accommodating cavity 007 is further arranged in the valve body assembly 1, and a second accommodating cavity 002 is located between any one of the third accommodating cavities 007 and the first accommodating cavity 001, wherein any one of the third accommodating cavities 007 is respectively used for accommodating one of the groups of switching assemblies 5;
any one of the third accommodating cavities 007 is communicated with the second accommodating cavity 002 through at least one third air passage 008, the third air passage 008 penetrates through the valve body assembly 1 positioned between the second accommodating cavity 002 and one of the third accommodating cavities 007, a switching cavity 009, a second output cavity 010 and a third air inlet cavity 011 can be formed among any one group of switching assemblies 5 respectively and between the valve body assemblies 1, the switching cavity 009 is communicated with at least the third air passage 008, and any one of the switching cavities 009 is used for receiving third air pressure of filled gas;
any group of switching components 5 is in a telescopic state, and any group of switching components 5 is used for controlling one of the second output cavities 010 and one of the third air inlet cavities 011 to be conducted according to third air pressure.
It should be understood that when the axle control valve is provided with only one set of switching assemblies 5, the valve body assembly 1 between the third accommodating cavity 007 where the switching assemblies 5 are located and the second accommodating cavity 002 is conducted by only one third air passage 008, so that the gas in the second accommodating cavity 002 can be injected into the third accommodating cavity 007 through the third air passage 008.
It should be understood that when the axle control valve is provided with two or more sets of switching assemblies 5, the valve body assembly 1 between the first third receiving cavity 007 and the second receiving cavity 002 where the switching assembly 5 of the first set is located is communicated with only one third air passage 008, and the valve body assembly 1 between the adjacent two third receiving cavities 007 is communicated with the 'communication air passage', so that the gas in the second receiving cavity 002 can be injected into the first third receiving cavity 007 through the third air passage 008, and the gas in the first third receiving cavity 007 can be injected into the adjacent and communicated one of the third receiving cavities 007 through the 'communication air passage'; in another aspect, except for the first third receiving cavity 007, any remaining third receiving cavity 007 is respectively communicated with the third air duct 008 through at least one 'communicating air duct'.
The switching cavity 009 controls a conduction state and a cutoff state between the second output cavity 010 and the third gas inlet cavity 011 according to a third pressure of the received gas; specifically, in this embodiment, when the third pressure of the gas is not received by the switching cavity 009, the second output cavity 010 and the third gas inlet cavity 011 are in an on state, and when the third pressure of the gas is received by the switching cavity 009, the second output cavity 010 and the third gas inlet cavity 011 can be switched from the on state to the off state.
The second output cavity 010 is communicated with the first air bag, and the third air inlet cavity 011 is communicated with the second air bag; in another angle, the gas in the two air bags can flow between the two air bags through the second output cavity 010 and the third air inlet cavity 011, when the first air bag is increased by external pressure, the first air bag is in a compressed state, so that the air pressure in the first air bag is pressurized, and if the second output cavity 010 and the third air inlet cavity 011 at the moment are in a conducting state, the gas in the first air bag can flow into the second air bag through the second output cavity 010 and the third air inlet cavity 011.
In the foregoing, three use modes have been proposed, and the state of the switching cavity 009 is described herein according to the three use modes, respectively.
When the axle control valve is in the use mode a, the commercial vehicle is in a heavy-load state, the axle descends, in the process, the first air passage 104 and the air bleeding channel 103 are communicated, at this time, a state that 'the second air inlet cavity 005 and the first output cavity 006 are blocked and the first output cavity 006 and the air bleeding channel 108 are communicated' can be formed between the control component 4 and the valve body component 1, and the air in the air bag communicated with the first output cavity 006 can be discharged to the atmosphere along the first output cavity 006, the air bleeding channel 108 and the air bleeding channel 103; meanwhile, a state where the ' second output chamber 010 and the third intake chamber 011 ' are conducted ' may be formed between the switching assembly 5 and the valve body assembly 1.
When the axle control valve is in the use mode B, the commercial vehicle is in a light load state, the axle rises, in the process, the first air passage 104 and the deflation passage 103 are cut off, the first air passage 104 and the inflation passage 102 are communicated, at this time, a ' second air inlet cavity 005 and a first output cavity 006 are communicated ' can be formed between the control component 4 and the valve body, and the first output cavity 006 and the exhaust passage 108 are cut off ', and the air bag communicated with the first output cavity 006 can be inflated along the directions of the inflation passage 102, the second air inlet cavity 005 and the first output cavity 006; meanwhile, since the first output chamber 006 communicates with the switching chamber 009 through the third air passage 008, a state 'the second output chamber 010 and the third intake chamber 011 is intercepted' can be formed between the switching member 5 and the valve body member 1.
When the axle control valve is in the use mode C, the commercial vehicle is in a heavy-load state, and the electromagnetic valve 3 controls the axle to ascend, in the process, the first air passage 104 and the deflation passage 103 are cut off, the first air passage 104 and the inflation passage 102 are communicated, at this time, a ' second air inlet cavity 005 and a first output cavity 006 are communicated ' can be formed between the control component 4 and the valve body, and the first output cavity 006 and the exhaust passage 108 are cut off ', and the air bag communicated with the first output cavity 006 can be inflated along the directions of the inflation passage 102, the second air inlet cavity 005 and the first output cavity 006; meanwhile, since the first output chamber 006 communicates with the switching chamber 009 through the third air passage 008, a state 'the second output chamber 010 and the third intake chamber 011 is intercepted' can be formed between the switching member 5 and the valve body member 1.
Further, referring to fig. 8 and 9, each set of switching assemblies 5 includes a fifth spring 501, a switching piston 502 and a switching seat 503;
the switching seat 503 is fixedly arranged in the third accommodating cavity 007, a fifth inner cavity 504 is arranged in the switching seat 503, the switching piston 502 is movably arranged in the fifth inner cavity 504, and the fifth spring 501 is arranged between the switching piston 502 and the valve body assembly 1;
a switching cavity 009 may be formed between the switching piston 502 and the switching seat 503, wherein a switching through hole 012 is radially disposed on the switching seat 503, and the third air duct 008, the switching through hole 012 and the switching cavity 009 are communicated.
The switching seat 503 is fixedly disposed in the third accommodating cavity 007, and the switching piston 502 and the switching seat 503 can form a sleeve structure, wherein the switching piston 502 can move relative to the switching seat 503; one end of the switching piston 502 is provided with a fifth inner cavity 504, the fifth spring 501 may be disposed in the fifth inner cavity 504, and both ends of the fifth spring 501 may contact the switching piston 502 and the valve body assembly 1, respectively.
A switching chamber 009 may be formed between the switching seat 503 and the switching piston 502, wherein the switching seat 503 is provided with a switching through hole 012, and the switching chamber 009 communicates with the third air passage 008 through the switching through hole 012 and 'a gap between the switching seat 503 and the valve body assembly 1'.
The second output cavity 010 and the third air inlet cavity 011 are respectively limited between the switching seat 503 and the valve body assembly 1, wherein the switching seat 503 is provided with an output through hole 013 and an air inlet through hole 014, the output through hole 013 is communicated with the second output cavity 010, and the air inlet through hole 014 is communicated with the third air inlet cavity 011; when the third air pressure of the air is not received in the switching chamber 009, the switching piston 502 is restricted at the on position by the elastic force of the fifth spring 501, the output through hole 013 and the intake through hole 014 are conducted through the gap between the switching piston 502 and the switching seat 503, and thus the second output chamber 010 and the third air intake chamber 011 are conducted; when the third air pressure of the air is received in the switching chamber 009, the switching piston 502 moves to the cutoff position against the elastic force of the fifth spring 501 by the third air pressure, and at this time, the gap between the switching piston 502 and the switching seat 503 is sealed, and the gap between the second output chamber 010 and the third air inlet chamber 011 is cutoff.
Specifically, the switching seat 503 is configured as a first-stage switching seat, a second-stage switching seat, a third-stage switching seat and a fourth-stage switching seat, a sealing gasket I is disposed between the first-stage switching seat and the second-stage switching seat, a sealing gasket II is disposed between the second-stage switching seat and the third-stage switching seat, and a sealing gasket III is disposed between the third-stage switching seat and the fourth-stage switching seat; meanwhile, one end of the switching piston 502 is provided with a recess 505; the second output chamber 010 is confined between the gasket I and the gasket II, and the third intake chamber 011 is confined between the gasket II and the gasket III; when the switching piston 502 moves to the conducting position, the recess 505 is limited between the sealing gasket I and the sealing gasket III, and a gap is left between the sealing gasket II and the recess 505, so that the gap between the switching piston 502 and the switching seat 503 can conduct the second output cavity 010 and the third air inlet cavity 011; when the switching piston 502 moves to the cut-off position, the recess 505 is confined between the seal gasket II and the seal gasket III, the seal gasket II being in close contact with the switching piston 502, thereby forming a gap seal between the seal gasket II and the switching piston 502 and the switching seat 503.
Example 2:
in the present embodiment, an axle is provided, including the axle control valve of embodiment 1.
Example 3:
in the present embodiment, a control system is provided, which includes the axle control valve of embodiment 1.
Example 4:
in this embodiment, a commercial vehicle is provided that includes the axle control valve of embodiment 1.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The axle control valve is characterized by comprising a valve body assembly, a valve core assembly and an electromagnetic valve;
a first accommodating cavity and a second accommodating cavity are arranged in the valve body assembly, and the valve core assembly is arranged in the first accommodating cavity;
the valve body assembly is provided with a control port, an air inlet channel and an air outlet channel, a first air channel is arranged on the valve body part between the first accommodating cavity and the second accommodating cavity, a second control cavity can be formed between the valve core assembly and the valve body assembly, the control port is communicated with the second control cavity, and the second control cavity is used for receiving first air pressure of filled gas;
the valve core assembly is in a telescopic state and is used for controlling the first air channel to be communicated with one of the air inlet channel and the air outlet channel according to the first air pressure;
the electromagnetic valve is used for controlling the on-off of the second control cavity.
2. The axle control valve of claim 1, further comprising a control assembly;
the control assembly is arranged in the second accommodating cavity;
a second air channel and an exhaust channel are arranged on the valve body assembly between the first accommodating cavity and the second accommodating cavity, the second air channel and the exhaust channel are isolated by the control assembly and the valve body assembly, a first control cavity, a second air inlet cavity and a first output cavity can be formed between the control assembly and the valve body assembly, the second air channel is respectively communicated with the first air channel and the second air inlet cavity, the first air channel is communicated with the first control cavity, and the first control cavity is used for receiving a second air pressure of filled gas;
the control assembly is in a telescopic state and is used for controlling the conduction of the second air inlet cavity and the first output cavity according to the second air pressure.
3. The axle control valve of claim 2, further comprising at least one set of shift assemblies;
at least one third accommodating cavity is further arranged in the valve body assembly, the second accommodating cavity is positioned between any one of the third accommodating cavities and the first accommodating cavity, and any one of the third accommodating cavities is used for accommodating one group of the switching assemblies respectively;
any one of the third accommodating cavities is communicated with the second accommodating cavity through at least a third air passage, the third air passage penetrates through the valve body assembly positioned between the second accommodating cavity and one of the third accommodating cavities, a switching cavity, a second output cavity and a third air inlet cavity can be formed among the valve body assemblies by any one group of switching assemblies respectively, the switching cavity is communicated with at least the third air passage, and any one of the switching cavities is used for receiving third air pressure of filled gas;
any group of the switching assemblies is in a telescopic state, and any group of the switching assemblies is used for controlling the conduction of one of the second output cavities and one of the third air inlet cavities according to the third air pressure.
4. The axle control valve according to any one of claims 1 to 3, wherein a mounting port and a second exhaust passage are provided on the valve body assembly, and the solenoid valve is provided at the mounting port, wherein the mounting port communicates with the second control chamber;
and a conducting state and a blocking state are arranged between the second exhaust channel and the mounting port, and the second exhaust channel and the mounting port are switched between the conducting state and the blocking state through the electromagnetic valve.
5. The axle control valve according to any one of claims 1 to 3, wherein the valve core assembly comprises a limit seat, a first spring, a spring seat, a piston rod, a second spring, a connecting seat, a rod seat, a valve and a third spring;
the ejector rod seat is fixedly arranged in the valve body assembly and is provided with a first inner cavity and a second inner cavity which are arranged along the axial direction, the valve and the third spring are respectively arranged in the second inner cavity, a gas guide port is formed at the communication part of the first inner cavity and the second inner cavity, and the valve is telescopically covered at the gas guide port through the third spring;
the first spring is arranged between the limiting column and the spring seat, the second spring is arranged between the spring seat and the connecting seat, the spring seat is axially provided with a third inner cavity, one end of the piston ejector rod is arranged in the third inner cavity, and the other end of the piston ejector rod sequentially penetrates through the spring seat, the connecting seat and the first inner cavity in a movable manner;
the connecting seat, the ejector rod seat and the valve body assembly are limited into the second control cavity together;
the gap between the piston mandril and the mandril seat at the air guide opening is a first gap, and the first gap, the second inner cavity and the first air passage can be communicated;
the piston mandril is communicated with the air guide channel, the air guide channel and the radial surface of the piston mandril form a first through hole and a second through hole, the first through hole is communicated with the first air channel, the second through hole is communicated with the third inner cavity, a third through hole is radially arranged on the spring seat, a gap between the spring seat and the valve body assembly is a second gap, the second gap can be communicated with the third inner cavity through the third through hole, a gap between the spring seat and the limiting seat is a third gap, and the third gap is communicated with the second gap.
6. The axle control valve of claim 2 or 3, wherein the control assembly includes a fourth spring, a control piston, and a control seat;
the control seat is fixedly arranged in the second accommodating cavity, the control seat is provided with a fourth inner cavity, one end of the control piston is movably arranged in the fourth inner cavity, the other end of the control piston is arranged outside the fourth inner cavity, and the fourth spring is arranged between the control piston and the valve body assembly;
the valve body assembly and the control piston may define the first control chamber therebetween;
the second air inlet cavity and the first output cavity can be formed between the valve body assembly and the control seat, and the second air inlet cavity and the first output cavity can be communicated.
7. The axle control valve of claim 3, wherein any set of the shift assemblies includes a fifth spring, a shift piston, and a shift seat;
the switching seat is fixedly arranged in the third accommodating cavity, a fifth inner cavity is arranged in the switching seat, the switching piston is movably arranged in the fifth inner cavity, and the fifth spring is arranged between the switching piston and the valve body assembly;
the switching cavity can be formed between the switching piston and the switching seat, wherein a switching through hole is formed in the switching seat in the radial direction, and the third air channel, the switching through hole and the switching cavity are communicated.
8. Axle, characterized in that it comprises an axle control valve according to any one of claims 1 to 7.
9. Control system, characterized in that it comprises an axle control valve according to any of claims 1 to 7.
10. Commercial vehicle, characterized in that it comprises an axle control valve according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121512276.XU CN216033596U (en) | 2021-07-05 | 2021-07-05 | Axle control valve, axle, control system and commercial car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121512276.XU CN216033596U (en) | 2021-07-05 | 2021-07-05 | Axle control valve, axle, control system and commercial car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216033596U true CN216033596U (en) | 2022-03-15 |
Family
ID=80554911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121512276.XU Active CN216033596U (en) | 2021-07-05 | 2021-07-05 | Axle control valve, axle, control system and commercial car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216033596U (en) |
-
2021
- 2021-07-05 CN CN202121512276.XU patent/CN216033596U/en active Active
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