CN111591097B - An ECAS integrated module - Google Patents
An ECAS integrated module Download PDFInfo
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- CN111591097B CN111591097B CN202010461237.5A CN202010461237A CN111591097B CN 111591097 B CN111591097 B CN 111591097B CN 202010461237 A CN202010461237 A CN 202010461237A CN 111591097 B CN111591097 B CN 111591097B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
- B60G17/0155—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit pneumatic unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
- B60G17/0525—Height adjusting or levelling valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
- B60G17/0526—Distributor units, e.g. for retractable wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/30—Spring/Damper and/or actuator Units
- B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
- B60G2202/314—The spring being a pneumatic spring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/20—Spring action or springs
- B60G2500/202—Height or leveling valve for air-springs
- B60G2500/2021—Arrangement of valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/30—Height or ground clearance
- B60G2500/302—Height or ground clearance using distributor valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
本发明涉及ECAS配气模块领域，尤其涉及了一种ECAS集成模块，每个进气口和出气口均连通有一个控制腔，控制腔从上到下依次分为上腔室、中腔室和下腔室，下腔室与各自所在的进气口或者出气口连通；各个中腔室内设置有A腔室，各个上腔室内设置有启动模块和C腔室，C1腔通过K通道与进气口连通，第二阀门用于控制下腔室与A腔连通/隔断；第三阀门用于控制第二阀门的开闭；每个第三阀门均包括G腔，第一阀门用于控制C腔与G腔的连通或关闭，启动模块作用在第一阀门上用于控制第一阀门的启动或关闭；启动模块启动时，第一阀门启动C腔与G连通。该模块具有集成化程度高，零部件使用少等优点。
The present invention relates to the field of ECAS gas distribution modules, and in particular to an ECAS integrated module, wherein each air inlet and air outlet are connected to a control chamber, and the control chamber is divided into an upper chamber, a middle chamber and a lower chamber from top to bottom, and the lower chamber is connected to the respective air inlet or air outlet; each middle chamber is provided with an A chamber, each upper chamber is provided with a start module and a C chamber, the C1 chamber is connected to the air inlet through a K channel, the second valve is used to control the connection/isolation of the lower chamber and the A chamber; the third valve is used to control the opening and closing of the second valve; each third valve includes a G chamber, the first valve is used to control the connection or closing of the C chamber and the G chamber, and the start module acts on the first valve to control the start or closing of the first valve; when the start module is started, the first valve starts the C chamber to connect with G. The module has the advantages of high integration and less parts.
Description
Technical Field
The invention relates to the field of ECAS gas distribution modules, in particular to an ECAS integrated module.
Background
The ECAS, i.e. the electronically controlled air suspension system of the passenger car/truck, mainly comprises an electric control unit, an air distributing valve, a height sensor, an air bag and other parts, and has the functions of supporting a car body and improving riding.
The air bags are execution units for controlling a suspension system, and the height of the vehicle body is adjusted through inflation and deflation of the air bags, and the air bags generally comprise a rear axle left air bag, a rear axle right air bag, a lifting axle left air bag, a lifting axle middle air bag and a lifting axle right air bag. The air distributing valve is used for adjusting the inflation and deflation of each air bag under the control of the electric control unit.
Air suspension systems generally include the following three modes of operation:
The left and right air bags are inflated and deflated, at the moment, the middle air bag of the lifting shaft is deflated, and then the left air bag of the rear shaft, the right air bag of the rear shaft, the left air bag of the lifting shaft and the middle air bag of the lifting shaft are inflated or deflated, so that the height of the vehicle body is adjusted;
The lifting shaft is inflated and deflated, at the moment, the rear shaft left air bag, the rear shaft right air bag, the lifting shaft left air bag and the lifting shaft right air bag are deflated simultaneously, then the lifting shaft middle air bag is inflated and deflated, and accordingly the height of the vehicle body is adjusted, and in a bias loading mode, at the moment, the lifting shaft left air bag, the lifting shaft right air bag and the lifting shaft middle air bag are all in a pressure maintaining state, and then inflation and deflation adjustment is carried out on the rear shaft left air bag and the rear shaft right air bag according to the height condition of the vehicle body, so that the bias loading state is adapted.
The switching and control between the three modes of operation is accomplished by the air distribution valve. At least two distributing valves are needed in the existing air suspension system to control the three working modes, and the integration level of the structure is not high.
The applicant filed in 2019 chinese patent CN201910747361.5 "an integrated ECAS gas distribution valve assembly", which integrates the various gas distribution ports and gas distribution functions. However, the air distribution valve assembly has the following defects that firstly, the air distribution valve assembly needs to be externally connected with a controller, because the electromagnetic valve of the existing design is large, the controller is complex to install, and meanwhile, 4 pressure sensors are needed to detect the pressure of each air bag when the pressure is detected.
Disclosure of Invention
The invention provides an ECAS integrated module aiming at the defects of the prior art that the ECAS air distribution valve assembly structure is not compact enough, the integration is not high enough and the like.
In order to solve the technical problems, the invention is solved by the following technical scheme:
An ECAS integrated module comprises a valve body, wherein an air inlet, an air outlet for connecting with a lifting shaft air bag or/and a rear shaft air bag and an air outlet for exhausting the integrated module are formed in the valve body;
Each air inlet and each air outlet are communicated with a control cavity, the control cavity is divided into an upper cavity, a middle cavity and a lower cavity from top to bottom in sequence, the lower cavity is communicated with the air inlet or the air outlet where the lower cavity is located, an A cavity is arranged in each middle cavity, the A cavity where the air inlet is located is an A1 cavity, a starting module and a C cavity are arranged in each upper cavity, the C cavity where the air inlet is located is a C1 cavity, the C1 cavity is communicated with the air inlet through a K channel, a first valve is arranged in each upper cavity, a second valve is arranged in each lower cavity and used for controlling the lower cavity to be communicated with the A cavity, a third valve is also arranged in each middle cavity and used for controlling the opening and closing of the second valve, each third valve comprises a G cavity, the first valve is used for controlling the communication or the closing of the C cavity and the G cavity, when compressed air in the G cavity is larger than the initial acting force of the second valve, the second valve can be opened to enable the lower cavity to be communicated with the A cavity, the starting module is used for controlling the starting or the closing of the first valve, and the first valve is started when the first valve is started, and the first valve is communicated with the G cavity. According to the scheme, through the design of the control cavity structure and the design of the air passage valve control logic, the air passage can be opened for assisting the electromagnetic valve in the scheme, so that the electromagnetic valve can be designed into a component with smaller size, the environment is provided for the integrated installation control circuit board and the controller, the upper end of the integrated module with the structure is not larger in size, the appearance of the whole module is more compact, and the space is saved.
Preferably, the upper chamber further comprises a D cavity, the D cavity is communicated with the D channel, the D channel is communicated with the exhaust port, a first valve is provided with a first control air passage, the D cavity can be communicated with the G cavity through the first air passage, when the starting module is started, the first air passage is in a blocking state, the D cavity is not communicated with the G cavity, and when the starting module is closed, the D cavity is communicated with the G cavity through the first air passage. The design of air flue makes each gas outlet can influence each other, and the control of being convenient for moreover, and the gas circuit design is compacter reasonable.
Preferably, the first valve comprises a first piston and a second piston, the inner side wall of the first piston and the inner side wall of the upper cavity are sealed to form a C cavity and a D cavity, the second piston is internally installed in the first piston, the second piston is sealed to the inner wall of the first piston, a second air passage is formed in the second piston, a buffer cavity is formed between the second piston and the first piston, an air breathing port is formed in the inner wall of the first piston, the D cavity is communicated with the buffer cavity through an air breathing port, the second air passage is communicated with the buffer cavity, a first switch air passage communicated with the second air passage is further arranged on the second piston, a third air passage and a second switch air passage communicated with the third air passage are formed in the first piston, and the third air passage is communicated with the C cavity. The design of first piston and second piston makes the air inlet can assist the solenoid valve to open the sealing washer, and first piston and second piston ingenious separation C chamber and the D chamber in addition through the structure to first piston and second piston design to guaranteed that the sealing washer can realize C chamber and G chamber intercommunication or D chamber and G chamber intercommunication, realize the entering and the exhaust in G chamber.
Preferably, the starting module of the air inlet comprises a fourth valve and an electromagnetic valve, the electromagnetic valve comprises a first coil, a first spring and a first valve core, the fourth valve comprises a fourth valve seat, the fourth valve seat comprises a second spring, a sealing piece and a valve sleeve, the sealing piece is positioned between the air port of the first switch air passage and the air port of the second switch air passage, in an initial state, the first valve core props against the fourth valve seat under the action of the first spring to enable the sealing piece to seal the second switch air passage, when the electromagnetic valve is electrified, the first valve core is attracted, the second spring drives the fourth valve seat and the sealing piece to move upwards to open the air port of the second air passage, the first air passage is further arranged on the first piston, and the C cavity is communicated with the G cavity through the third air passage, the second switch air passage and the first air passage in sequence.
Preferably, the A cavities of all the air ports are communicated through an A channel, the third valve is sealed with the inner wall of the middle cavity to form a B cavity, the B cavities of all the air ports are communicated through a B channel, and the C cavities are communicated through a C channel.
Preferably, the air port comprises a plug port, a starting module, a first valve and a fifth valve are arranged in the plug port, an A cavity in the plug port is an A6 cavity, a B cavity in the plug port is a B7 cavity, the fifth valve controls the communication and closing of the A6 cavity and the B7 cavity, and the B7 cavity is communicated with the air outlet.
Preferably, the device also comprises a controller and an L channel, wherein the L channel is communicated with the A cavity where the air inlet is positioned, and a pressure sensor is arranged in the L channel.
Preferably, the air outlet comprises a first left air port connected with a left air bag of the lifting shaft, a first right air port connected with a right air bag of the lifting shaft, a middle air port connected with a middle air bag of the lifting shaft, a second left air port connected with a left air bag of the rear shaft, a second right air port connected with a right air bag of the rear shaft and a choke plug port, wherein control cavities in the air inlet, the first left air port, the first right air port, the second left air port, the second right air port, the middle air port and the choke plug port are arranged in the vertical direction, an A channel, a B channel, a C channel and a D channel are arranged in the valve body in the horizontal direction, and a controller is arranged at the upper end of the valve body and connected with a starting module in each control cavity.
Preferably, only one control cavity of the first left air port and the first right air port is internally provided with a starting module and a first valve, a fifth channel is arranged in the valve body, the fifth channel is communicated with a middle cavity where the first left air port is positioned and a middle cavity where the first right air port is positioned, and the fifth channel is communicated with a G cavity of the middle cavity where the first left air port is positioned and a G cavity of the middle cavity where the first right air port is positioned.
Preferably, the air inlet, the first left air port, the first right air port, the second left air port, the second right air port, the middle air port and the plug port are arranged at the lower end of the valve body and distributed at two sides of the channel A, the channel B, the channel C and the channel D, the air outlet is arranged at the left side or the right side of the valve body, and the muffler is arranged at the air outlet.
By adopting the technical scheme, the invention has the remarkable technical effects that the electromagnetic valve can use a smaller electromagnetic valve by structural design of the first valve, so that the upper end size and the lower end size of the valve body are ensured to be similar, the whole integrated module is more reasonable, the driving voltage/current required by the electromagnetic valve is smaller, the heating condition of the module can be reduced, and the controller circuit board at the upper end of the module is protected. Meanwhile, the integrated module is designed to enable all air inlets and air outlets to be arranged at the lower end of the valve body, so that manufacturing is simpler, and each air channel is communicated with a cavity at a corresponding position in each control cavity by being arranged between each control cavity in the left-right direction, so that air channel layout is more reasonable, and response is faster. In addition, the scheme realizes that the air pressure of each air bag can be separately measured by one air pressure sensor through the air path design, thereby saving parts, ensuring that the whole integrated module is more compact and saving space.
The hydraulic lifting device has the advantages of greatly shortening the time of hanging/unloading operation on the tractor, facilitating loading/unloading, particularly on a liquid tank car, quickly adjusting the height, reducing air consumption, saving energy, having a driving aid function for a 6x2 car, improving driving performance, controlling a lifting bridge, controlling various pressure control modes, protecting an axle load, ensuring that the structure is more compact, reducing weight, improving space utilization and facilitating pipeline arrangement, installation and maintenance.
Drawings
Fig. 1 is a front view of a module.
Fig. 2 is a rear view of the module.
Fig. 3 is a bottom view of fig. 2.
Fig. 4 is a cross-sectional view from the perspective of fig. 3 A-A.
Fig. 5 is a cross-sectional view from the perspective of fig. 3B-B.
Fig. 6 is a cross-sectional view from the perspective of fig. 3C-C.
Fig. 7 is an enlarged view of fig. 4.
Fig. 8 is a functional diagram of the distribution valve.
The names of the parts indicated by the numerical references in the drawings are as follows: 1-valve body, 2-inlet port, 3-control chamber, 4-upper chamber, 5-middle chamber, 6-lower chamber, 7-A chamber, 8-A1 chamber, 9-C chamber, 10-C1 chamber, 11-K channel, 12-first valve, 13-second valve, 14-third valve, 15-G chamber, 16-actuation module, 17-D chamber, 20-B chamber, 21-A channel, 22-B channel, 23-C channel, 24-D channel, 25-first piston, 26-second piston, 27-first air channel, 28-second air channel, 29-buffer chamber, 30-breathing air port, 31-first switching air channel, 32-third air channel, 33-second switching air channel, 34-coil first, 35-spring first, 36-valve core first, 37-spring second, 38-sealing plate, 39-valve sleeve, 40-plug port, 41-A6 chamber, 42-B7 chamber, 43-fifth valve, 44-controller, 45-L channel, 46-first air channel, 47-second air channel, 48-right air channel, 52-air vent, 52-third air channel, fourth air vent, 52-fourth air vent, fifth air vent, and fourth air vent.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 to 7, an ECAS integrated module includes a valve body 100, on which an air inlet 1 and an air outlet for connecting a lift shaft air bag or/and a rear shaft air bag and an air outlet 3 for exhausting the integrated module are opened on the valve body 100;
Each air inlet 1 and each air outlet are communicated with a control cavity 101, the control cavity 101 is divided into an upper cavity 4, a middle cavity 5 and a lower cavity 6 from top to bottom in sequence, the lower cavity 6 is communicated with the air inlet 1 or the air outlet where the lower cavity 6 is located, an A cavity 7 is arranged in each middle cavity 5, and the A cavity 7 where the air inlet 1 is located is defined as an A1 cavity 8 for convenience of distinguishing. An actuating module 16 and a C chamber 9 are arranged in each upper chamber 4, wherein the actuating module 16 in the embodiment is a normally closed electromagnetic valve. The C chamber 9 where the air inlet 1 is positioned is a C1 chamber 10, and the C1 chamber 10 is communicated with the air inlet 1 through a K channel 11.
In this embodiment, one end of the K channel 11 is communicated with the lower chamber 6 where the air inlet 1 is located, and the other end is communicated with the C1 chamber 10. The upper chambers 4 are respectively provided with a first valve 12, the lower chambers 6 are respectively provided with a second valve 13, the second valves 13 are used for controlling the lower chambers 6 to be communicated with the cavity A or cut off, the middle chambers 5 are respectively provided with a third valve 14, the third valves 14 are used for controlling the opening and closing of the second valves 13, each third valve 14 comprises a cavity G15, the first valve 12 is used for controlling the communication or closing of the cavity C and the cavity G15, when the compressed air in the cavity G15 is larger than the initial acting force of the second valve 13, the second valve 13 can be opened to enable the lower chambers 6 to be communicated with the cavity A, a starting module 16 acts on the first valve 12 and is used for controlling the starting or closing of the first valve 12, and when the starting module 16 is started, the first valve 12 starts the communication of the cavity C and the cavity G. Wherein the C cavity and the D cavity 17 are formed by the cooperation of the first valve 12 and the upper cavity 4, and the C cavity and the D cavity 17 are formed between the outer side surface of the first valve 12 and the inner side surface of the upper cavity 4. In order to ensure that air in the G cavity 15 can be discharged when the third valve 14 moves upwards, the D cavity 17 is communicated with the D channel 105, the D channel 105 is communicated with the exhaust port 3, the first valve 12 is provided with a first control air channel 27, the D cavity 17 can be communicated with the G cavity 15 through the first air channel 27, the first air channel 27 is in a blocking state when the starting module 16 is started, the D cavity 17 is not communicated with the G cavity 15, and the D cavity 17 is communicated with the G cavity 15 through the first air channel 27 when the starting module 16 is closed. Wherein the D passage 105 communicates with the exhaust port 3 through the E passage 55.
To facilitate an understanding of the scheme, the present embodiment describes the start-up module 16 and the first valve 12.
The first valve 12 includes a first piston 106 and a second piston 107, where the first piston 106 seals with the inner wall of the upper chamber 4 and forms a C cavity and a D cavity 17, specifically, the first piston 106 includes a first sealing lip, a second sealing lip and a third sealing lip, whose outer sides are sequentially arranged from top to bottom, and the C cavity and the D cavity 17 are enclosed between the first sealing lip, the second sealing lip and the third sealing lip and the inner wall of the upper chamber 4. The second piston 107 is mounted in the first piston 106, and the second piston 107 is sealed with the inner wall of the first piston 106, specifically, the sealing lip on the outer side of the second piston 107 and the inner wall of the first piston 106. The second piston 107 is provided with a second air passage 28, a buffer cavity 29 is formed between the second piston 107 and the first piston 106, the inner wall of the first piston 106 is provided with a breathing air port, the D cavity 17 is communicated with the buffer cavity 29 through the breathing air port, the second air passage 28 is communicated with the buffer cavity 29, the second piston 107 is also provided with a first switch air passage 31 communicated with the second air passage 28, the first piston 106 is provided with a third air passage 32 and a second switch air passage communicated with the third air passage 32, and the third air passage 32 is communicated with the C cavity.
The starting module 16 in this embodiment includes a fourth valve and an electromagnetic valve, the electromagnetic valve includes a first coil, a first spring and a first valve core, the fourth valve includes a fourth valve seat, the fourth valve seat includes a second spring, a sealing piece 38 and a valve sleeve 39, the sealing piece 38 is located between the air port of the first switch air passage 31 and the air port of the second switch air passage, in the initial state, the first valve core props against the fourth valve seat under the action of the first spring to enable the sealing piece 38 to seal the second switch air passage, when the electromagnetic valve is powered on, the first valve core is attracted, the second spring drives the fourth valve seat and the sealing piece 38 to move upwards to open the air port of the second air passage 28, the first piston 106 is further provided with a first air passage 27, and the cavity C is communicated with the cavity G15 sequentially through the third air passage 32, the second switch air passage and the first air passage 27. The specific spring II is arranged on the valve seat where the second switch air passage is located, the valve sleeve 39 limits the sealing piece 38, the upper end of the valve sleeve 39 is abutted against the valve core I, the valve core I is abutted against the valve sleeve 39 under the action of the spring I, so that the valve sleeve 39 drives the sealing piece 38 to seal the second switch air passage in the initial state, and the communication between the C cavity and the G cavity 15 is blocked. In this embodiment, the first air passage 27 is formed on the bottom surface of the valve seat where the second switching air passage is located. The number of the first air passages 27 in this embodiment is four and is set in the circumferential direction.
In this embodiment, in order to ensure stable movement of the G cavity 15, the first piston 106 is provided with an H cavity at the lower end of the first air channel 27, where the size of the H cavity is adapted to that of the G cavity 15, and the H cavity plays a transitional role, so as to ensure that the third valve 14 where the G cavity 15 is located can be stressed in balance and operate stably.
In this embodiment, the third valve 14 is inserted in the middle chamber 5 in a sealing manner. The second valve 13 includes a third spring and a third valve element, and in an initial state, the third valve element abuts against the lower end face of the middle chamber 5 under the action of the third spring, thereby blocking communication between the middle chamber 5 and the lower chamber 6. The lower end of the third valve 14 abuts against the upper end surface of the third valve core.
The air outlet in this embodiment includes a first left air port 21 for connecting with a left air bag of a lifting shaft, a first right air port 22 for connecting with a right air bag of the lifting shaft, a middle air port 25 for connecting with a middle air bag of the lifting shaft, a second left air port 23 for connecting with a left air bag of a rear shaft, a second right air port 24 for connecting with a right air bag of the rear shaft and a choke plug port 26, wherein a control cavity 101 in the air inlet 1, the first left air port 21, the first right air port 22, the second left air port 23, the second right air port 24, the middle air port 25 and the choke plug port 26 is arranged in an up-down direction, an A channel 102, a B channel 103, a C channel 104 and a D channel 105 are opened in a valve body 100 in a horizontal direction, and a controller 44 is installed at the upper end of the valve body 100 and connected with a start module 16 in each control cavity 101. In this embodiment, the control chamber 101 in the first left gas port 21, the control chamber 101 in the second left gas port 23, the control chamber 101 in the second right gas port 24, and the control structure in the control chamber 101 in the first left gas port 21 are identical as shown in fig. 4 and 5.
In this embodiment, all the chambers a of the air ports are communicated through a channel a 102, the outer wall of the third valve 14 and the inner wall of the upper chamber 4 are sealed to form a chamber B20, all the chambers B20 of the air ports are communicated through a channel B103, and the chambers C are communicated through a channel C104.
The air port comprises a plug port 26, the plug port 26 comprises a starting module 16, a first valve 12 and a fifth valve 43 arranged in the upper chamber 4, the A cavity in the plug port 26 is an A6 cavity 41, the B cavity 20 in the plug port 26 is a B7 cavity 42, the fifth valve 43 controls the communication and closing of the A6 cavity 41 and the B7 cavity 42, the B7 cavity 42 is communicated with the air outlet, and therefore the fifth valve 43 is communicated with the air outlet 3.
In this embodiment, in order to ensure that the left air bag of the lifting shaft and the right air bag of the lifting shaft can be inflated and deflated simultaneously, only one control chamber 101 of the first left air port 21 and the first right air port 22 is provided with a starting module 16 and a first valve 12, a fifth channel 52 is arranged in the valve body 100, the fifth channel 52 is communicated with the middle chamber 5 where the first left air port 21 is located and the middle chamber 5 where the first right air port 22 is located, and the fifth channel 52 is communicated with the G chamber 15 of the middle chamber 5 where the first left air port 21 is located and the G chamber 15 of the middle chamber 5 where the first right air port 22 is located. In the present embodiment, the control chamber 101 in the first left port 21 is provided with a start module 16 and a first valve 12.
In this embodiment, the controller 44 is installed at the upper end of the valve body 100, an L channel 45 is provided in the valve body 100, one end of the L channel 45 is communicated with the a cavity where the air inlet 1 is located, the other end of the L channel 45 is connected with the controller 44, a pressure sensor for detecting the air pressure in the L channel 45 is provided in the L channel 45, and because all the air charging processes require the a channel 102 to charge air, the compressed air in the a channel 102 is derived from the air inlet 1.
The invention discloses an integrated ECAS module, which can realize functions by using 2 ECAS electromagnetic valve assemblies, 1 controller 44 and 4 air pressure sensors, and is integrated. After integration, the product structure is more compact, the weight is reduced, the space utilization rate is improved, and the pipeline arrangement, installation and maintenance are convenient. The pilot valve structure can ensure that the solenoid valve can finish larger air intake and exhaust in a short time.
The working principle is as follows:
lifting shaft lifting state:
All the solenoid valves of the starting module 16 of the air ports are not electrified, air source air pressure enters from the air inlet 1, the air pressure passes through the K channel 11 and reaches the C channel 104, and as the first left air port 21 and the second left air port 23 are communicated through the fifth channel 52, only one control cavity 101 in the first left air port 21 and the first right air port 22 is provided with a C cavity, so that compressed air in the C channel 104 enters in six ways, reaches the bottom of the sealing plate 38 through the third air passage 32 and the second switch air passage respectively, and under the action of the first spring, the sealing plate 38 cuts off six groups of solenoid valves of air pressure to be normally closed valves. The controller 44ECU energizes the solenoid valve coil I of the air inlet 1, under the action of magnetic force, the spring force of the first spring is overcome, the valve core I is sucked, the second spring pushes the sealing piece 38 and the valve sleeve to move upwards, the air pressure of the cavity of the air inlet 1C sequentially passes through the third air passage 32, the second switch air passage and the first air passage 27 to reach the cavity H and the cavity G15, the third valve 14 is pushed to move downwards, the third valve 14 pushes the second valve 13 open, the air inlet 1 is communicated with the cavity A of the air inlet 1, and the air inlet 1 is communicated with the cavity A in all the air port control cavities 101 through the channel A102.
Then the controller 44ECU energizes the solenoid valve coil one of the plug air port, the remaining principle is as above, the air pressure of the C cavity of the plug air port enters the upper end of the fifth valve 43, the air pressure overcomes the spring force of the fifth valve 43, the fifth valve 43 abuts against the upper end surface of the middle cavity 5, and the A6 cavity 41 and the B7 cavity 42 are cut off. Then, the controller 44 energizes the solenoid valve coil one of the middle air port 25, and repeats the above-described operation, so that the a cavity of the middle air port 25 communicates with the middle air port 25 of the lower chamber 6, thereby inflating the lift shaft middle air bag and lifting the lift shaft. In the process, the A channel 102 is communicated with the L channel 45, the L channel 45 is connected with the air pressure sensor 12, and the air pressure value is monitored at any time. After the air pressure value is reached, the air pressure is adjusted, and (5) cutting off the power and maintaining the pressure.
Lifting shaft lowered state:
The controller 44 energizes the coil of the middle air port, and repeats the above operation, so that the cavity A of the middle air port 25 is communicated with the middle air port 25 of the lower chamber 6, and because all the cavities A7 are communicated through the channel A102, and because the cavity A6 41 and the cavity B7 42 are communicated, the compressed air of the middle air bag connected with the middle air port 25 is introduced into the air outlet 3 through the cavity B7 42, so that the air is discharged and the lifting center shaft is put down. And after reaching the required laying state of the lifting shaft, carrying out power-off pressure maintaining.
In the lifting state of the lifting shaft left air bag and the right air bag inflatable lifting shaft, the electromagnetic valves are not electrified, air source air pressure enters from the air inlet 1, the air pressure reaches the C channel 104 through the K channel 11, and the first left air port 21 and the second left air port 23 are communicated through the fifth channel 52, so that only one control cavity 101 in the first left air port 21 and the first right air port 22 is provided with the C cavity, the compressed air in the C channel 104 enters in six ways, reaches the bottom of the sealing plate 38 through the third air channel 32 and the second switch air channel respectively, and the sealing plate 38 cuts off the six groups of electromagnetic valves of the air pressure to be normally closed valves under the action of the first spring. The controller 44ECU energizes the solenoid valve coil I of the air inlet 1, under the action of magnetic force, the spring force of the first spring is overcome, the valve core I is sucked, the second spring pushes the sealing piece 38 and the valve sleeve to move upwards, the air pressure of the cavity of the air inlet 1C sequentially passes through the third air passage 32, the second switch air passage and the first air passage 27 to reach the cavity H and the cavity G15, the third valve 14 is pushed to move downwards, the third valve 14 pushes the second valve 13 open, the air inlet 1 is communicated with the cavity A of the air inlet 1, and the air inlet 1 is communicated with the cavity A in all the air port control cavities 101 through the channel A102.
The controller 44 energizes the first coil of the control chamber 101 in the first left air port 21, the C chamber in the first left air port 21 is communicated with the G chamber 15 in the control chamber 101, compressed air enters the upper end of the G chamber 15 in the first right air port 22 through the fifth channel 52, and the compressed air pushes the third valve 14 in the first left air port 21 and the first right air port 22 to push down the second valve 13, so that the a chamber in the first left air port 21 and the first right air port 22 is communicated with the first left air port 21 and the first right air port 22 respectively, and air pressure of the air inlet 1 enters the first left air port 21 and the first right air port 22 through the a channel 102 to inflate the left air bag and the right air bag of the lifting shaft, so that the lifting shaft is lifted. In the process, the A channel 102 is communicated with the L channel 45, the L channel 45 is connected with the air pressure sensor 12, and the air pressure value is monitored at any time. After the air pressure value is reached, the air pressure is adjusted, and (5) cutting off the power and maintaining the pressure.
Left air bag and right air bag of the lifting shaft deflate and the lifting shaft is put down:
The controller 44 energizes the coil I in the first left air port 21, overcomes the spring force of the first spring under the action of magnetic force, the valve core I is sucked up, the second spring pushes the sealing plate 38 to move upwards with the valve sleeve, so that the air pressure of the air inlet 1C cavity sequentially passes through the third air passage 32, the second switch air passage and the first air passage 27 to reach the H cavity and the G cavity 15 of the first left air port 21, simultaneously reaches the G cavity 15 of the first right air port 22 through the fifth passage 52, simultaneously pushes the third valve 14 in the first left air port 21 and the first right air port 22 to move downwards, the third valve 14 pushes the second valve 13 open, at the moment, the first left air port 21 is communicated with the A cavity of the control cavity 101, the first right air port 22 is communicated with the A cavity of the control cavity 101, the air bag compressed air connected with the first left air port 21 and the first right air port 22 passes through the A cavity 41 and then passes through the B7 cavity 42 to be discharged from the air outlet 3, and the lifting shaft is powered off to keep pressure after the lifting shaft reaches the requirements.
The inflation and deflation processes of the rear axle left air bag and the rear axle right air bag are the same as those of the air bag in the lifting axle, and in the embodiment, because the control cavities 101 in the second left air port 23 and the second right air port 24 are respectively provided with the starting component and the first valve 12, the rear axle left air bag and the rear axle right air bag are independently controlled by the controller 44, and the control method is the same as that of the air bag in the lifting axle.
Example 2
As shown in fig. 1 to 7, unlike in embodiment 1, the G chamber 15 of the second left gas port 23 control chamber 101 and the G chamber 15 of the second right gas port 24 control chamber 101 communicate by providing a passage so that the connection structure of the second left gas port 23 and the second right gas port 24 is the same as the connection structure of the first left gas port 21 and the first right gas port 22, achieving synchronous gas intake and gas exhaust of the second left gas port 23 and the second right gas port 24.
Example 3
The difference between this embodiment and embodiment 1 is that the control chambers 101 in the first left air port 21 and the first right air port 22 have the same structure, and are provided with a first valve 12, a second valve 13, a third valve 14 and a first electromagnetic valve, which comprise a chamber A, a chamber B20, a chamber C and a chamber D17. The air inlet and outlet of the first left air port 21 and the first right air port 22 can be individually controlled.
Example 4
The present embodiment differs from embodiment 1 in that the controller 44 controls the second left air port 23 to be connected to the rear axle right air bag of the automobile, and the second right air port 24 to be connected to the rear axle left air bag of the automobile. The meaning of this embodiment is that the air bags to which the ports of the ecas integrated modules are connected are not uniquely fixed, and the controller 44 can be programmed to exchange the ports for the air bags.
Claims (8)
1. The ECAS integrated module is characterized by comprising a valve body (100), wherein an air inlet (1), an air outlet for connecting a lifting shaft air bag or/and a rear shaft air bag and an air outlet (3) for exhausting the integrated module are formed in the valve body (100);
Each air inlet (1) and each air outlet are communicated with a control cavity (101), the control cavities (101) are sequentially divided into an upper cavity (4), a middle cavity (5) and a lower cavity (6) from top to bottom, the lower cavity (6) is communicated with the corresponding air inlet (1) or air outlet, an A cavity (7) is arranged in each middle cavity (5), the A cavity (7) in which the air inlet (1) is arranged is an A1 cavity (8), a starting module (16) and a C cavity (9) are arranged in each upper cavity (4), the C cavity (9) in which the air inlet (1) is arranged is a C1 cavity (10), the C1 cavity (10) is communicated with the air inlet (1) through a K channel (11), a first valve (12) is arranged in each middle cavity (5), a second valve (13) is arranged in each lower cavity (6), the second valve (13) is used for controlling the communication/separation of the lower cavity (6) and the A cavity, a third valve (14) is also arranged in each middle cavity (5), the third valve (14) is used for controlling the third valve (14) to be used for controlling the opening and closing of the third valve (13) and the third valve (15) is used for controlling the opening and closing of the third valve (15) cavity (15), the second valve (13) can be opened to enable the lower chamber (6) to be communicated with the A chamber when the compressed air in the G chamber (15) is larger than the initial acting force of the second valve (13), the starting module (16) acts on the first valve (12) to control the starting or closing of the first valve (12), the first valve (12) starts the C chamber to be communicated with the G chamber when the starting module (16) starts, the upper chamber (4) further comprises a D chamber (17), the D chamber (17) is communicated with the D channel (105), the D channel (105) is communicated with the exhaust port (3), the first valve (12) is provided with a first air channel (27) for controlling the D chamber (17) to be communicated with the G chamber (15) through the first air channel (27), the first air channel (27) is in a blocking state when the starting module (16) starts, the D chamber (17) is not communicated with the G chamber (15), the D chamber (17) is communicated with the G chamber (15) through the first air channel (27) when the starting module (16) starts, the first valve (12) comprises the first piston (106) and the second piston (106) and the first piston (106) is arranged in the first piston (107) and the inner side wall (107) of the first piston (106) is sealed in the first piston (106), a second air passage (28) is formed in the second piston (107), a buffer cavity (29) is formed between the second piston (107) and the first piston (106), a breathing port is formed in the inner wall of the first piston (106), the D cavity (17) is communicated with the buffer cavity (29) through the breathing port, the second air passage (28) is communicated with the buffer cavity (29), a first switch air passage (31) communicated with the second air passage (28) is further formed in the second piston (107), a third air passage (32) and a second switch air passage communicated with the third air passage (32) are formed in the first piston (106), and the third air passage (32) is communicated with the C cavity.
2. The ECAS integrated module of claim 1 wherein the start module (16) of the air inlet (1) comprises a fourth valve and an electromagnetic valve, the electromagnetic valve comprises a first coil, a first spring and a first valve core, the fourth valve comprises a fourth valve seat, the fourth valve seat comprises a second spring, a sealing piece (38) and a valve sleeve (39), the sealing piece (38) is positioned between the air port of the first switch air passage (31) and the air port of the second switch air passage, the first valve core is abutted against the fourth valve seat under the action of the first spring to enable the sealing piece (38) to seal the second switch air passage, the first valve core is attracted when the electromagnetic valve is electrified, the second spring drives the fourth valve seat and the sealing piece (38) to move upwards to open the air port of the second air passage (28), the first piston (106) is further provided with a first air passage (27), and the C cavity is communicated with the G cavity (15) sequentially through the third air passage (32), the second switch air passage and the first air passage (27).
3. An ECAS integrated module according to claim 1, wherein the a cavities of all the air ports are communicated through an a channel (102), the third valve (14) is sealed with the inner wall of the middle chamber (5) to form a B cavity (20), the B cavities (20) of all the air ports are communicated through a B channel (103), and the C cavities are communicated through a C channel (104).
4. The ECAS integrated module of claim 1 wherein the gas port comprises a plug port (26), wherein the plug port (26) is internally provided with a starting module (16), a first valve (12) and a fifth valve (43), wherein the A cavity in the plug port (26) is an A6 cavity (41), the B cavity (20) in the plug port (26) is a B7 cavity (42), and the fifth valve (43) controls the communication and closing of the A6 cavity (41) and the B7 cavity (42), and the B7 cavity (42) is communicated with the gas outlet.
5. The ECAS integrated module of claim 1 further comprising a controller (44) and an L-channel (45), wherein the L-channel (45) is in communication with the A1 chamber (8), and a pressure sensor is disposed in the L-channel (45).
6. An ECAS integrated module according to claim 1, wherein the air outlet comprises a first left air port (21) for connecting with a left air bag of a lifting shaft, a first right air port (22) for connecting with a right air bag of the lifting shaft, an intermediate air port (25) for connecting with an intermediate air bag of the lifting shaft, a second left air port (23) for connecting with a left air bag of a rear shaft, a second right air port (24) for connecting with a right air bag of the rear shaft and a choke plug port (26), wherein the air inlet (1), the first left air port (21), the first right air port (22), the second left air port (23), the second right air port (24), the intermediate air port (25) and a control cavity (101) in the choke plug port (26) are arranged in an up-down direction, the a channel (102), the B channel (103), the C channel (104) and the D channel (105) are opened in the valve body (100) in a horizontal direction, and the controller (44) is mounted at the upper end of the valve body (100) is connected with the start-up module (16) in each control cavity (101).
7. The ECAS integrated module of claim 6 wherein only one of the first left port (21) and the first right port (22) is provided with a start module (16) and a first valve (12) in the control chamber (101), a fifth channel (52) is formed in the valve body (100), the fifth channel (52) is communicated with the middle chamber (5) where the first left port (21) is located and the middle chamber (5) where the first right port (22) is located, and the fifth channel (52) is communicated with the G chamber (15) of the middle chamber (5) where the first left port (21) is located and the G chamber (15) of the middle chamber (5) where the first right port (22) is located.
8. The ECAS integrated module according to claim 6, wherein the air inlet (1), the first left air port (21), the first right air port (22), the second left air port (23), the second right air port (24), the middle air port (25) and the plug port (26) are arranged at the lower end of the valve body (100) and distributed at two sides of the A channel (102), the B channel (103), the C channel (104) and the D channel (105), the air outlet (3) is arranged at the left side or the right side of the valve body (100), and the muffler (53) is arranged at the air outlet (3).
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| CN202010461237.5A CN111591097B (en) | 2020-05-27 | 2020-05-27 | An ECAS integrated module |
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| CN202010461237.5A CN111591097B (en) | 2020-05-27 | 2020-05-27 | An ECAS integrated module |
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| CN213082847U (en) * | 2020-05-27 | 2021-04-30 | 浙江万安科技股份有限公司 | ECAS integrated module |
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| DE19713313B4 (en) * | 1997-03-29 | 2005-10-13 | Wabco Gmbh & Co.Ohg | Controllable valve device |
| CN200945812Y (en) * | 2006-06-13 | 2007-09-12 | 淄博龙达汽车配件制造有限公司 | Automobile floating bridge air suspension control valve |
| CN110466305B (en) * | 2019-08-14 | 2022-11-25 | 浙江万安科技股份有限公司 | ECAS distributing valve assembly |
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| CN213082847U (en) * | 2020-05-27 | 2021-04-30 | 浙江万安科技股份有限公司 | ECAS integrated module |
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