Cab air suspension height adjusting valve

Abstract

The invention relates to the technical field of air valves, and provides a cab air suspension height adjusting valve which comprises a valve body and an electromagnetic valve assembly, and the valve body is provided with an air outlet channel and a first exhaust hole; the electromagnetic valve assembly is telescopically arranged in the air outlet channel, and when the electromagnetic valve assembly is not powered on, the first end of the electromagnetic valve assembly is located at the first position, and the first exhaust hole is blocked from the air outlet channel; when the electromagnetic valve assembly is powered on, the electromagnetic valve assembly shrinks, the first end of the electromagnetic valve assembly is located at the second position, the first exhaust hole communicates with the air outlet channel, and air in the air spring is exhausted through the first exhaust hole. According to the air suspension height adjusting valve for the cab, the electromagnetic valve assembly is contracted when powered on to avoid the position of the first exhaust hole, so that the first exhaust hole is communicated with the air outlet channel, air in the air spring can be quickly exhausted, the height of the cab is reduced, a driver and passengers can get on and off a vehicle conveniently, and convenient conditions are provided for the driver and passengers to get on and off the vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of air valves, and in particular to a cab air suspension height regulating valve. Background Art

[0002] As commercial vehicle engines become larger and larger, the height of the cab is also getting higher and higher, which causes a lot of inconvenience for drivers and passengers to open the door and get on and off the vehicle. The existing cab air suspension height valve can only raise or lower the cab height to the standard position, but cannot be lowered further. For some shorter drivers and passengers, opening the door and getting on and off the vehicle is very inconvenient. Summary of the invention

[0003] The invention provides a cab air suspension height regulating valve, which is used to solve the defect that the height valve in the prior art cannot reduce the cab height to below the standard height.

[0004] The present invention provides a cab air suspension height regulating valve, comprising: a valve body and a solenoid valve assembly, wherein the valve body is provided with an air outlet channel and a first exhaust hole, wherein the air outlet channel is used to be connected to an air spring of the cab; the solenoid valve assembly is telescopically arranged in the air outlet channel, and when the solenoid valve assembly is not powered on, the first end of the solenoid valve assembly is in a first position, the first exhaust hole is blocked from the air outlet channel, and the height of the cab remains unchanged; when the solenoid valve assembly is powered on, the solenoid valve assembly contracts, the first end of the solenoid valve assembly is in a second position, the first exhaust hole is connected to the air outlet channel, the gas in the air spring is discharged through the first exhaust hole, and the height of the cab is reduced.

[0005] According to a cab air suspension height adjustment valve provided by the present invention, the solenoid valve assembly includes a first element, an elastic member and a second element arranged in the air outlet channel; the first element is connected to the second element through the elastic member, and at least one of the first element and the second element can generate electromagnetic force when energized, and utilize the electromagnetic force to drive the first element to move; when no power is supplied, the first element is in the first position, and when power is supplied, the first element is in the second position.

[0006] According to a cab air suspension height adjustment valve provided by the present invention, the solenoid valve assembly also includes a first shell, the first shell is arranged in the air outlet channel, the surface of the first shell abuts against the inner wall of the air outlet channel, the surface of the first shell is provided with a first through hole, and the first through hole is connected with the first exhaust hole; the first element, the elastic member and the second element are arranged in the first shell, the surface of the first element abuts against the inner wall of the first shell; when the first element is in the first position, the air outlet channel is blocked from the first through hole, and when the first element is in the second position, the air outlet channel is connected with the first through hole.

[0007] According to a cab air suspension height adjustment valve provided by the present invention, the valve body is also provided with an air inlet channel, and the air inlet channel is used to be connected to an air source; an air flow channel is provided inside the first element, and the first end of the air flow channel passes through the end surface of the first element and is connected with the air outlet channel, and the second end of the air flow channel passes through the surface of the first element; when the first element is in the first position, the air inlet channel is connected with the second end of the air flow channel, and the gas enters the air spring, and the height of the cab increases; when the first element is in the second position, the air inlet channel is blocked from the second end of the air flow channel, and the gas is discharged from the first exhaust hole.

[0008] According to a cab air suspension height adjustment valve provided by the present invention, the air flow channel includes: a first air flow channel and a second air flow channel; the first air flow channel is arranged along the extension direction of the length of the first element, and one end of the first air flow channel passes through the end of the first element and is connected with the air intake channel; the second air flow channel is arranged perpendicular to and is connected with the first air flow channel, and both ends of the second air flow channel pass through the surface of the first element.

[0009] According to a cab air suspension height adjustment valve provided by the present invention, the first shell is provided with a first through groove and a second through groove penetrating the surface of the first shell; when the first element is in the first position, the first through groove is communicated with the air intake channel, the second through groove is communicated with the first through groove, the second end of the air flow channel is communicated with the second through groove, and the gas enters the air spring; when the first element is in the second position, the second end of the air flow channel abuts against the inner wall of the first shell, and the gas is discharged from the first exhaust hole.

[0010] According to a cab air suspension height adjustment valve provided by the present invention, the valve body includes: a second shell, a valve core and a cover body, the second shell is provided with a first groove, the bottom of the first groove is provided with a second groove and a third groove, the second groove is connected to the air inlet channel, and the third groove is connected to the air outlet channel; the valve core is rotatably arranged in the first groove, the cover body is covered with the second shell, and there is a gap between the cover body and the valve core, and the surface of the valve core is provided with a third through groove and a fourth through groove; when the first element is in the first position, the third through groove is connected to the second groove, and the fourth through groove is connected to the third groove, and gas enters the air spring.

[0011] According to a cab air suspension height adjustment valve provided by the present invention, the second shell is provided with a second exhaust hole, and a fourth groove is further provided in the first groove, and the fourth groove is communicated with the second exhaust hole; a fifth through groove is provided on the surface of the valve core, and when the iron core is in the first position, the valve core is rotated, the third through groove is blocked with the second groove, the fourth through groove is communicated with the fourth groove, and the fifth through groove is communicated with the third groove, and the gas in the air spring is discharged from the second exhaust hole to lower the height of the cab.

[0012] According to a cab air suspension height adjustment valve provided by the present invention, the valve core includes: a plurality of stators, a rotor and a rotating shaft, the plurality of stators are respectively arranged in the second groove, the third groove and the fourth groove, each of the stators is provided with a second through hole, and the plurality of second through holes are respectively connected to the air intake channel, the air outlet channel and the second exhaust hole; the rotor is arranged in the first groove, the rotor is connected to the rotating shaft, the rotating shaft passes through the cover body and extends to the outside of the cover body, and the rotor is provided with the third through groove, the fourth through groove and the fifth through groove.

[0013] According to a cab air suspension height adjustment valve provided by the present invention, the first element is an iron core, and the second element is a coil; the solenoid valve assembly also includes a pair of reeds, which are respectively connected to the two ends of the coil; the valve body is provided with a plug, which is electrically connected to the pair of reeds, and the plug is used to connect to a controller.

[0014] The cab air suspension height regulating valve provided by the present invention arranges a solenoid valve assembly in the air outlet channel of the valve body, and utilizes the solenoid valve assembly to contract when power is turned on to avoid the position of the first exhaust hole, so that the first exhaust hole is connected to the air outlet channel, and the gas in the air spring can be quickly discharged, so that the height of the cab is lowered, which is convenient for drivers and passengers to get on and off the vehicle, providing convenient conditions for drivers and passengers to get on and off the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of the cab air suspension height regulating valve provided by the present invention.

[0017] Figure 2 It is one of the structural schematic diagrams of the solenoid valve assembly in the cab air suspension height adjustment valve.

[0018] Figure 3 This is the second structural schematic diagram of the solenoid valve assembly in the cab air suspension height adjustment valve.

[0019] Figure 4 This is one of the cross-sectional views of the cab air suspension height regulating valve provided by the present invention.

[0020] Figure 5 This is the second cross-sectional view of the cab air suspension height regulating valve provided by the present invention.

[0021] Figure 6 yes Figure 1 A schematic structural diagram of the second shell of the valve body is shown in FIG.

[0022] Figure 7 yes Figure 1 An exploded view of the valve body is shown in FIG.

[0023] Figure 8 It is one of the structural diagrams of the valve body.

[0024] Fig. 9 This is the second structural diagram of the valve body.

[0025] Fig.10 This is the third structural diagram of the valve body.

[0026] Reference numerals: 1. Valve body; 2. Solenoid valve assembly; 3. Rocker; 11. second housing; 12. stator; 13. rotor; 14. rotating shaft; 15. first sealing ring; 16. second sealing ring; 21. iron core; 22. elastic member; 23. coil; 24. spring; 25. connecting shaft; 26. third sealing ring; 27. end cover; 28. first housing; 101, air inlet channel; 102, air outlet channel; 103, first exhaust hole; 104, second exhaust hole; 105, plug; 106, terminal; 111, first groove; 121, second through hole; 131, third through groove; 132, fourth through groove; 133, fifth through groove; 211, air flow channel; 281, first through hole; 282, first through groove; 283, second through groove; 284, annular protrusion; 1111, second groove; 1112, third groove; 1113, fourth groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Combine the following Figure 1-Figure 10 The present invention describes a cab air suspension height regulating valve.

[0029] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the cab air suspension height regulating valve comprises: a valve body 1 and a solenoid valve assembly 2, wherein the valve body 1 is provided with an air inlet channel 101, an air outlet channel 102 and a first exhaust hole 103. The air inlet channel 101 is used to connect to a high-pressure air source of the vehicle, and the air outlet channel 102 is used to connect to an air spring of the cab.

[0030] The solenoid valve assembly 2 is telescopically arranged in the air outlet passage 102. When the solenoid valve assembly 2 is not powered, the first end of the solenoid valve assembly 2 is in the first position, the first end of the solenoid valve assembly 2 blocks the first exhaust hole 103, the first exhaust hole 103 is disconnected from the air outlet passage 102, the gas in the air spring cannot be discharged from the first exhaust hole 103, and the height of the cab remains unchanged. When the solenoid valve assembly 2 is powered, the solenoid valve assembly 2 contracts, the first end of the solenoid valve assembly 2 is in the second position, the first end of the solenoid valve assembly 2 is away from the first exhaust hole 103, the first exhaust hole 103 is connected to the air outlet passage 102, and the gas in the air spring is discharged through the first exhaust hole 103, so that the height of the cab is reduced.

[0031] The cab air suspension height adjusting valve provided in the embodiment of the present invention arranges a solenoid valve assembly in the air outlet channel of the valve body, and utilizes the solenoid valve assembly to contract when power is turned on to avoid the position of the first exhaust hole, thereby connecting the first exhaust hole with the air outlet channel. The gas in the air spring can be quickly discharged, so that the height of the cab can be lowered, which is convenient for drivers and passengers to get on and off the vehicle, providing convenient conditions for drivers and passengers to get on and off the vehicle.

[0032] like Figure 2 As shown, in an embodiment of the present invention, the solenoid valve assembly 2 includes a first element, an elastic member 22 and a second element arranged in the air outlet channel 102; the first element and the second element are connected by the elastic member 22, and at least one of the first element and the second element can generate electromagnetic force when power is supplied, and utilize the electromagnetic force to drive the first element to move; when no power is supplied, the first element is in the first position, and when power is supplied, the first element is in the second position.

[0033] In an optional embodiment, the solenoid valve assembly 2 includes a first electromagnet, a second electromagnet and an elastic member, and the first electromagnet and the second electromagnet are connected by the elastic member. When the first electromagnet and the second electromagnet are not powered on, the first electromagnet is located at the first position, blocking the first exhaust hole 103; when the first electromagnet and the second electromagnet are powered on, the second electromagnet uses magnetic attraction to drive the first electromagnet to move toward the second electromagnet, compressing the elastic member. At this time, the first electromagnet avoids the first exhaust hole 103, and the first exhaust hole 103 is connected to the air outlet channel 102. The gas in the air spring can be discharged from the first exhaust hole 103 to reduce the height of the cab.

[0034] In an embodiment of the present invention, the solenoid valve assembly 2 includes an iron core 21, an elastic member 22 and a coil 23 disposed in the air outlet channel 102. The iron core 21 is connected to the coil 23 through the elastic member 22. When the coil 23 is not energized, the elastic member 22 is in an extended state, the iron core 21 is located in the first position, the iron core 21 blocks the first exhaust hole 103, the air outlet channel 102 is blocked from the first exhaust hole 103, and the height of the cab remains unchanged. When the coil 23 is energized, the coil 23 generates an electromagnetic force to drive the iron core 21 to move toward the direction close to the coil 23 to compress the elastic member 22. At this time, the iron core 21 is located in the second position, the iron core 21 avoids the first exhaust hole 103, the first exhaust hole 103 is connected to the air outlet channel 102, and the gas in the air spring can be discharged from the first exhaust hole 103 to reduce the height of the cab.

[0035] Furthermore, the solenoid valve assembly 2 further includes a connecting shaft 25, a first end of which is connected to the iron core 21, and a second end of which is inserted into the coil 23 and can slide relative to the coil 23. In one embodiment, the elastic member 22 is sleeved on the outside of the connecting shaft 25, and the two ends of the elastic member 22 are respectively connected to the iron core 21 and the coil 23. After the coil 23 is energized, the iron core 21 moves toward the direction close to the coil 23, and the connecting shaft 25 slides along the coil 23. In another embodiment, the number of the elastic members 22 can be at least two, and the two ends of each elastic member 22 are respectively connected to the iron core 21 and the coil 23. After the coil 23 is energized, the iron core 21 can also move toward the direction close to the coil 23.

[0036] In the above embodiment, by providing the elastic member 22 , when the coil 23 is de-energized, the iron core 21 can be reset to the first position under the elastic force of the elastic member 22 .

[0037] Furthermore, in an embodiment of the present invention, the coil 23 includes: a coil frame and a coil winding, the coil winding is wound outside the coil frame, and the connecting shaft 25 is inserted into the coil frame and can slide along the coil frame.

[0038] Furthermore, a pair of reeds 24 are connected to both ends of the coil winding. The valve body 1 is provided with a plug 105, and a pair of terminals 106 are provided in the plug 105. Each terminal 106 extends into the air outlet channel 102 and is soldered to a pair of reeds 24. After the controller is plugged into the plug 105, the driver and passengers can control the coil 23 to be energized by operating the controller, or the cab can send a control command to the controller to control the coil 23 to be energized.

[0039] like Figure 3 As shown, in the embodiment of the present invention, the solenoid valve assembly 2 further includes a first housing 28, which is disposed in the gas outlet channel 102, and the surface of the first housing 28 abuts against the inner wall of the gas outlet channel 102. The surface of the first housing 28 is provided with a first through hole 281, and the first through hole 281 is communicated with the first exhaust hole 103. The iron core 21, the elastic member 22 and the coil 23 are all disposed in the first housing 28, and the surface of the iron core 21 abuts against the inner wall of the first housing 28. When the iron core 21 is in the first position, the gas outlet channel 102 is blocked from being connected with the first through hole 281, and when the iron core 21 is in the second position, the gas outlet channel 102 is communicated with the first through hole 281.

[0040] Specifically, in this embodiment, the outer wall of the first shell 28 abuts against the inner wall of the air outlet channel 102, and the surface of the iron core 21 abuts against the inner wall of the first shell 28. When the coil 23 is not energized, the iron core 21 blocks the first through hole 281, so that the air outlet channel 102 is blocked from communicating with the first through hole 281. When the coil 23 is energized, the iron core 21 moves toward the direction close to the coil 23, the first through hole 281 communicates with the air outlet channel 102, and the gas in the air spring can flow through the first through hole 281 and be discharged from the first exhaust hole 103.

[0041] Furthermore, in order to make the outer wall of the first shell 28 in close contact with the inner wall of the air outlet channel 102, a plurality of annular protrusions 284 are provided on the outer wall of the first shell 28. Similarly, in order to make the iron core 21 in close contact with the inner wall of the first shell 28, a plurality of annular grooves are provided on the surface of the iron core 21, and a third sealing ring 26 is provided in each annular groove. The third sealing ring 26 abuts against the inner wall of the first shell 28 to improve the sealing performance when the iron core 21 abuts against the first shell 28.

[0042] like Figure 2 As shown, an end cover 27 is further provided at the end of the gas outlet channel 102 . The end cover 27 is provided with a through hole, and the through hole is communicated with the gas outlet channel 102 .

[0043] like Figure 2 As shown, an air flow channel 211 is provided inside the iron core 21, a first end of the air flow channel 211 penetrates the end surface of the iron core 21 and communicates with the air outlet channel 102, and a second end of the air flow channel 211 penetrates the surface of the iron core 21. When the iron core 21 is in the first position, the air inlet channel 101 is communicated with the second end of the air flow channel 211, and the gas enters the air spring, and the height of the cab is increased; when the iron core 21 is in the second position, the air inlet channel 101 is disconnected from the second end of the air flow channel 211, and the gas is discharged from the first exhaust hole 103.

[0044] Specifically, if Figure 4 As shown, the end of the air outlet channel 102 that is not connected to the air spring is connected to the air inlet channel 101. After the gas enters the air outlet channel 102 from the air inlet channel 101, it flows through the gap between the air outlet channel 102 and the coil 23, and enters the air flow channel 211 through the gap between the elastic member 22 and the air outlet channel 102, and then enters the air spring through the air outlet channel 102 to inflate the air spring to increase the height of the cab.

[0045] If you want to lower the height of the cab, Figure 5As shown, the coil 23 is energized and the iron core 21 moves to the second position. At this time, the first through hole 281 is connected to the first exhaust hole 103, and the second end of the air flow channel 211 abuts against the inner wall of the first shell 28, so that the gas cannot enter the air flow channel 211. The gas in the air spring can be quickly discharged from the first exhaust hole 103 to adjust the height of the cab to the ideal height.

[0046] Furthermore, the airflow channel 211 includes: a first airflow channel and a second airflow channel, the first airflow channel is arranged along the extension direction of the length of the iron core 21, and one end of the first airflow channel passes through the end of the iron core 21 and is connected to the air inlet channel 101. The second airflow channel is arranged perpendicular to and connected to the first airflow channel, and both ends of the second airflow channel pass through the surface of the iron core 21. When the iron core 21 is in the first position, the gas enters the first airflow channel from the second airflow channel, and then enters the air spring from the air outlet channel 102; when the iron core 21 is in the second position, the end of the second airflow channel abuts against the inner wall of the first shell 28, so that the gas cannot enter the airflow channel 211, and thus the air spring cannot be inflated.

[0047] like Figure 3 As shown, the first housing 28 is provided with a first through slot 282 and a second through slot 283 that penetrate the surface of the first housing 28. A pair of springs 24 are provided outside the first housing 28 and are engaged with the first through slot 282. Figure 4 As shown, when the iron core 21 is in the first position, the gas entering the air outlet channel 102 through the air inlet channel 101 flows from the first through groove 282 to the second through groove 283, then flows from the second through groove 283 to the air flow channel 211, and then enters the air spring through the air outlet channel 102.

[0048] like Figure 5 As shown, when the iron core 21 is in the second position, the second airflow channel of the airflow channel 211 abuts against the inner wall of the first housing 28, so that the gas cannot enter the airflow channel 211, thereby failing to inflate the air spring. At this time, the first through hole 281 is connected to the first exhaust hole 103, and the gas in the air spring can be discharged from the first exhaust hole 103.

[0049] The cab air suspension height adjusting valve provided in the embodiment of the present invention can lower the height of the cab according to the needs of the drivers and passengers, so as to facilitate the drivers and passengers to open the door and get on the vehicle. After the drivers and passengers get on the vehicle, the height of the cab can be raised to an ideal height. The adjustment is flexible, meeting the needs of drivers and passengers of different heights to get on and off the vehicle.

[0050] like Figure 6As shown, the valve body 1 includes: a second housing 11, a valve core and a cover body, the second housing 11 is provided with a first groove 111, the bottom of the first groove 111 is provided with a second groove 1111 and a third groove 1112, the second groove 1111 is communicated with the air inlet channel 101, and the third groove 1112 is communicated with the air outlet channel 102. The valve core is rotatably arranged in the first groove 111, the cover body is covered with the second housing 11, and there is a gap between the cover body and the valve core, the surface of the valve core is provided with a third through groove 131 and a fourth through groove 132, when the iron core 21 is in the first position, the third through groove 131 is communicated with the second groove 1111, the fourth through groove 132 is communicated with the third groove 1112, and the gas enters the air spring.

[0051] Specifically, the valve core is arranged in the first groove 111, covering the second groove 1111 and the third groove 1112. The valve core can rotate in the first groove 111, and the surface of the valve core is provided with a third through groove 131 and a fourth through groove 132. When the valve core rotates, the through groove on the valve core can communicate with or block the communication with other grooves in the first groove 111. Specifically, when the iron core 21 is in the first position, that is, when the solenoid valve assembly 2 is not powered, the third through groove 131 is communicated with the second groove 1111, and the fourth through groove 132 is communicated with the third groove 1112. The gas enters the second groove 1111 from the air inlet channel 101, flows to between the valve core and the cover body through the third through groove 131, then enters the fourth through groove 132, and enters the outlet channel 102 through the third groove 1112. Then, it flows along the first through groove 282 to the second through groove 283, flows from the second through groove 283 to the air flow channel 211, and enters the air spring through the outlet channel 102.

[0052] like Figure 6 As shown, the second housing 11 is provided with a second exhaust hole 104, and a fourth groove 1113 is further provided in the first groove 111, and the fourth groove 1113 is communicated with the second exhaust hole 104. A fifth through groove 133 is provided on the surface of the valve core, and when the iron core 21 is in the first position, the valve core is rotated to make the fourth through groove 132 communicate with the third groove 1112, and the fifth through groove 133 communicate with the fourth groove 1113, and the gas in the air spring is discharged from the second exhaust hole 104 to reduce the height of the cab.

[0053] Specifically, when the iron core 21 is in the first position, the iron core 21 blocks the first through hole 281, and the first exhaust hole 103 cannot exhaust. At this time, by rotating the valve core, the gas in the air spring can also be discharged from the second exhaust hole 104, thereby lowering the height of the cab. Specifically, the third through groove 131 and the second groove 1111 are blocked from communication, and the gas cannot enter the second shell 11. The gas in the air spring enters the third groove 1112, flows through the fifth through groove 133 into the gap between the valve core and the cover body, and then enters the fourth groove 1113 from the fourth through groove 132, and is discharged from the second exhaust hole 104, so that the height of the cab is lowered.

[0054] In the embodiment of the present invention, when the solenoid valve assembly 2 is not working, the height of the cab can be lowered by exhausting the gas through the second exhaust hole 104; and when the solenoid valve assembly 2 is working, the height of the cab can be lowered by exhausting the gas through the first exhaust hole 103. The difference between the two is that when the gas in the air spring is discharged from the second exhaust hole 104, the height of the cab can only be lowered to the standard working height, but cannot be lowered further. The standard height is not suitable for shorter drivers and passengers. When the gas in the air spring is discharged from the first exhaust hole 103, the height of the cab can be lowered below the standard height to meet the needs of drivers and passengers of different heights to get on and off the vehicle.

[0055] like Figure 7 As shown, in an embodiment of the present invention, the valve core includes: a plurality of stators 12, a rotor 13 and a rotating shaft 14, wherein the plurality of stators 12 are respectively arranged in the second groove 1111, the third groove 1112 and the fourth groove 1113, each stator 12 is provided with a second through hole 121, and the plurality of second through holes 121 are respectively connected with the air inlet channel 101, the air outlet channel 102 and the second exhaust hole 104. The rotor 13 is arranged in the first groove 111 and is located above the stator 12. The rotor 13 is connected with the rotating shaft 14, and the rotating shaft 14 passes through the cover body and extends outside the cover body. The rotor 13 is provided with a third through groove 131, a fourth through groove 132 and a fifth through groove 133, and there is a gap between the rotor 13 and the cover body.

[0056] Specifically, if Figure 8 As shown, when the solenoid valve assembly 2 is not working, when the height of the cab is at the standard working height, the rotor 13 is in a neutral state, and the through grooves on the rotor 13 are not connected to the second through holes 121 in each stator 12. At this time, the gas cannot enter the air spring, and the gas in the air spring cannot be discharged from the second exhaust hole 104. The air spring is in a stable pressure state, and the height and posture of the cab remain stable.

[0057] When the solenoid valve assembly 2 is not working, if the height of the cab needs to be raised, Fig. 9As shown, the rotating shaft 14 is rotated in the clockwise direction, and the rotating shaft 14 drives the rotor 13 to rotate, so that the third through slot 131 is connected to the stator 12 connected to the air inlet channel 101, the fourth through slot 132 is connected to the stator 12 connected to the air outlet channel 102, and the second through hole 121 of the stator connected to the second exhaust hole 104 is blocked. The high-pressure gas enters the third through slot 131 along the stator 12 from the air inlet channel 101, flows to the gap between the rotor 13 and the cover body, and then enters the fourth through slot 132, enters the second through hole 121 of the stator 12 from the fourth through slot 132, and then enters the air outlet channel 102 to inflate the air spring.

[0058] When the solenoid valve assembly 2 is not working, if the height of the cab needs to be lowered, Fig.10 As shown, the rotating shaft 14 is rotated counterclockwise, and the rotating shaft 14 drives the rotor 13 to rotate, so that the third through slot 131 is blocked from communicating with the stator 12 communicating with the air inlet channel 101, the fourth through slot 132 is communicated with the stator 12 communicating with the second exhaust hole 104, and the fifth through slot 133 is communicated with the stator 12 communicating with the air outlet channel 102. The gas in the air spring enters the fifth through slot 133 along the second through hole 121 of the stator 12, flows to the gap between the rotor 13 and the cover body, and then enters the fourth through slot 132, enters the stator 12 communicating with the second exhaust hole 104 from the fourth through slot 132, and is finally discharged from the second exhaust hole 104, so that the height of the cab is reduced.

[0059] Furthermore, in the above-mentioned embodiment, when the air spring is inflated, the fourth through slot 132 must be connected to the stator 12 connected to the air outlet channel 102; when the second exhaust hole 104 is exhausted, the fourth through slot 132 must be connected to the stator 12 connected to the second exhaust hole 104. In the embodiment of the present invention, the three stators 12 are arranged in an equilateral triangle, so the length of the fourth through slot 132 is longer than the lengths of the third through slot 131 and the fifth through slot 133.

[0060] Furthermore, the valve core also includes a first sealing ring 15 and multiple second sealing rings 16. The first sealing ring 15 is arranged between the rotating shaft 14 and the cover body, each second sealing ring 16 is respectively sleeved outside a stator 12, and the multiple second sealing rings 16 are respectively arranged in the second groove 1111, the third groove 1112 and the fourth groove 1113.

[0061] like Figure 1 As shown, in the embodiment of the present invention, the cab air suspension height regulating valve further comprises a rocker 3, which is connected to the rotating shaft 14. When the rocker 3 is swung, the rotor 13 can be driven to rotate to switch the air intake and exhaust of the cab air suspension height regulating valve. In this embodiment, the head of the rocker 3 can be connected to the cab through a height adjustment rod for easy operation by the driver and passengers.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cab air suspension height regulating valve, characterized in that: include: A valve body and a solenoid valve assembly, wherein the valve body is provided with an air outlet passage and a first exhaust hole, wherein the air outlet passage is used to be connected to an air spring of the cab; The solenoid valve assembly is telescopically arranged in the air outlet passage. When the solenoid valve assembly is not powered, the first end of the solenoid valve assembly is in a first position, the first exhaust hole is blocked from the air outlet passage, and the height of the cab remains unchanged. When the solenoid valve assembly is powered on, the solenoid valve assembly contracts, the first end of the solenoid valve assembly is in the second position, the first exhaust hole is connected to the air outlet channel, the gas in the air spring is discharged through the first exhaust hole, and the height of the cab is lowered.

2. The cab air suspension height regulating valve according to claim 1, characterized in that: The solenoid valve assembly includes a first element, an elastic element, and a second element disposed in the air outlet passage; The first element and the second element are connected via the elastic member, and when power is supplied to at least one of the first element and the second element, an electromagnetic force can be generated to drive the first element to move by the electromagnetic force; When power is not supplied, the first element is in the first position, and when power is supplied, the first element is in the second position.

3. The cab air suspension height regulating valve according to claim 2, characterized in that: The solenoid valve assembly further includes a first shell, the first shell is disposed in the air outlet passage, the surface of the first shell abuts against the inner wall of the air outlet passage, the surface of the first shell is provided with a first through hole, and the first through hole is communicated with the first exhaust hole; The first element, the elastic member and the second element are arranged in the first shell, and the surface of the first element abuts against the inner wall of the first shell; When the first element is in the first position, the air outlet channel is blocked from the first through hole, and when the first element is in the second position, the air outlet channel is connected to the first through hole.

4. The cab air suspension height regulating valve according to claim 3, characterized in that: The valve body is also provided with an air inlet passage, and the air inlet passage is used to be connected to an air source; An air flow channel is provided inside the first element, a first end of the air flow channel passes through the end surface of the first element and communicates with the air outlet channel, and a second end of the air flow channel passes through the surface of the first element; When the first element is in the first position, the air intake passage is connected to the second end of the air flow passage, gas enters the air spring, and the height of the cab rises; When the first element is in the second position, the air inlet channel is blocked from the second end of the air flow channel, and gas is discharged from the first exhaust hole.

5. The cab air suspension height regulating valve according to claim 4, characterized in that: The airflow channel comprises: a first airflow channel and a second airflow channel; The first airflow channel is arranged along the extension direction of the length of the first element, and one end of the first airflow channel passes through the end of the first element and communicates with the air inlet channel; The second air flow channel is vertically arranged and communicated with the first air flow channel, and both ends of the second air flow channel penetrate the surface of the first element.

6. The cab air suspension height regulating valve according to claim 4, characterized in that: The first shell is provided with a first through groove and a second through groove penetrating through the surface of the first shell; When the first element is in the first position, the first through slot is in communication with the air inlet passage, the second through slot is in communication with the first through slot, the second end of the air flow passage is in communication with the second through slot, and gas enters the air spring; When the first element is in the second position, the second end of the air flow channel abuts against the inner wall of the first shell, and gas is discharged from the first exhaust hole.

7. The cab air suspension height regulating valve according to claim 4, characterized in that: The valve body comprises: a second shell, a valve core and a cover body, the second shell is provided with a first groove, the bottom of the first groove is provided with a second groove and a third groove, the second groove is communicated with the air inlet channel, and the third groove is communicated with the air outlet channel; The valve core is rotatably disposed in the first groove, the cover body is covered with the second housing, and there is a gap between the cover body and the valve core, and a third through groove and a fourth through groove are provided on the surface of the valve core; When the first element is in the first position, the third through groove is communicated with the second groove, the fourth through groove is communicated with the third groove, and gas enters the air spring.

8. The cab air suspension height regulating valve according to claim 7, characterized in that: The second shell is provided with a second exhaust hole, and the first groove is further provided with a fourth groove, and the fourth groove is communicated with the second exhaust hole; A fifth through groove is provided on the surface of the valve core. When the iron core is in the first position, the valve core is rotated, the third through groove is blocked from the second groove, the fourth through groove is communicated with the fourth groove, the fifth through groove is communicated with the third groove, and the gas in the air spring is discharged from the second exhaust hole to lower the height of the cab.

9. The cab air suspension height regulating valve according to claim 8, characterized in that: The valve core comprises: a plurality of stators, a rotor and a rotating shaft, the plurality of stators are respectively arranged in the second groove, the third groove and the fourth groove, each of the stators is provided with a second through hole, and the plurality of second through holes are respectively connected with the air inlet channel, the air outlet channel and the second exhaust hole; The rotor is disposed in the first groove, the rotor is connected to the rotating shaft, the rotating shaft penetrates the cover body and extends to the outside of the cover body, and the rotor is provided with the third through slot, the fourth through slot and the fifth through slot.

10. The cab air suspension height regulating valve according to claim 2, characterized in that: The first element is an iron core, and the second element is a coil; The solenoid valve assembly further includes a pair of reeds, wherein the pair of reeds are respectively connected to two ends of the coil; The valve body is provided with a plug, the plug is electrically connected to a pair of reeds, and the plug is used to connect to a controller.

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