Vehicle oil-gas interconnection suspension system, circulating switching type four-position four-way valve and vehicle

Abstract

The invention discloses a vehicle oil-gas interconnection suspension system, a circulation switching type four-position four-way valve and a vehicle, the vehicle oil-gas interconnection suspension system comprises a left suspension hydraulic cylinder and a right suspension hydraulic cylinder, each of the left suspension hydraulic cylinder and the right suspension hydraulic cylinder is provided with a piston rod and a cylinder body, one end of each piston rod is used for being connected with a frame, each cylinder body is connected with an axle, and each of the left suspension hydraulic cylinder and the right suspension hydraulic cylinder comprises a first chamber and a second chamber; the circulating switching type four-way valve comprises a valve body, a reset spring, an oil way guide plate, a plurality of valve elements, a cover plate, a control disc and an oil way guide plate, the cover plate and the control disc are sequentially arranged in the valve body in the first direction, an oil way is arranged between the valve body and the oil way guide plate, and an oil way is arranged between the oil way guide plate and the cover plate; four oil ports of the valve body are respectively communicated with a first chamber of the left suspension hydraulic cylinder, a second chamber of the left suspension hydraulic cylinder, a first chamber of the right suspension hydraulic cylinder and a second chamber of the right suspension hydraulic cylinder; the control disc can rotate around the axis parallel to the first direction and is used for controlling the axial positions of the valve elements, and circulating switching of the oil ways is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle oil-gas interconnected suspension system, a cyclic switching four-position four-way valve and a vehicle. Background Art

[0002] The vehicle suspension system is a general term for all components connecting the vehicle body and wheels. Its main function is to cushion and absorb vehicle body vibrations caused by uneven road surfaces, and to transmit driving and braking forces between the wheels and the road surface. The vehicle's oil-gas interconnected suspension system usually involves mode switching, that is, switching the direction of the oil flow. In order to meet the switching needs of multiple modes of the left and right suspension of the vehicle and ensure its switching convenience, it is necessary to concentrate the various oil flow states in a switching valve. The structure of the existing four-position four-way valve mainly switches the configuration by moving the valve core up and down, which cannot achieve cyclic switching and is not easy to meet the needs of automobile oil-gas suspension oil circuit control. Summary of the Invention

[0003] In response to the above-mentioned defects or improvement needs of the prior art, the present invention provides a vehicle oil-gas interconnected suspension system, a cyclic switching four-position four-way valve and a vehicle, which can easily realize cyclic switching between any configuration and any arrangement order through different control panel protrusion designs.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions.

[0005] In some embodiments, a vehicle oil-gas interconnected suspension system is provided, comprising: a left suspension hydraulic cylinder and a right suspension hydraulic cylinder, each having a piston rod and a cylinder body, one end of the piston rod being connected to a vehicle frame, and the cylinder body being connected to a vehicle axle, each of the left suspension hydraulic cylinder and the right suspension hydraulic cylinder comprising a first chamber and a second chamber;

[0006] A cyclic switching four-way valve includes a valve body, a return spring, an oil guide plate, multiple valve cores, a cover plate, and a control plate. The oil guide plate, the cover plate, and the control plate are sequentially arranged within the valve body along a first direction. Oil paths are provided between the valve body and the oil guide plate, and between the oil guide plate and the cover plate.

[0007] The first end of the valve body along the first direction is penetrated by a first oil port A, a second oil port B, a third oil port P, and a fourth oil port T, which are respectively connected to the first chamber of the left suspension hydraulic cylinder, the second chamber of the left suspension hydraulic cylinder, the first chamber of the right suspension hydraulic cylinder, and the second chamber of the right suspension hydraulic cylinder;

[0008] The multiple valve cores all pass through the oil guide plate and the cover plate, and one end abuts against the return spring and the other end abuts against the control disk. One end of the return spring abuts against the first end of the valve body.

[0009] The control disk can rotate around an axis parallel to the first direction, and is used to control the axial positions of the multiple valve cores to achieve cyclic switching of the oil circuit.

[0010] In some embodiments, the valve core includes a first valve core, a second valve core, and a third valve core;

[0011] A first oil passage BP connecting the second oil port B and the third oil port P is provided between the valve body and the oil passage guide plate;

[0012] A second oil passage AB connecting the first oil port A and the second oil port B, a third oil passage BT connecting the second oil port B and the fourth oil port T, a fourth oil passage TP connecting the fourth oil port T and the third oil port P, a fifth oil passage PA connecting the third oil port P and the first oil port A, and a sixth oil passage AT connecting the first oil port A and the fourth oil port T are provided between the oil passage guide plate and the cover plate;

[0013] The first valve core has two independent valve cores, including a first independent valve core and a second independent valve core, the first independent valve core is arranged on the third oil passage BT, and the second independent valve core is arranged on the fifth oil passage PA;

[0014] The second valve core has a central valve core, which is arranged on the first oil passage BP and the sixth oil passage AT, and is used to simultaneously control the first oil passage BP and the sixth oil passage AT;

[0015] The third valve core is provided on the second oil passage AB and the fourth oil passage TP.

[0016] In some embodiments, the third valve core is a connected valve core, which is used to simultaneously control the second oil circuit AB and the fourth oil circuit TP.

[0017] In some embodiments, the central valve core has a first axial segment, a second axial segment, a third axial segment and a fourth axial segment in sequence along the axial direction; the diameter of the first axial segment is greater than the diameter of the second axial segment, the diameter of the third axial segment is greater than the diameter of the fourth axial segment, and the diameter of the first axial segment is equal to the diameter of the third axial segment.

[0018] In some embodiments, the cyclic switching four-way valve is a four-position four-way valve.

[0019] In some embodiments, the control disk has a positioning pin in the center, and four tracks are arranged on the control disk in radial order from the inside to the outside around the positioning pin. Each track has a raised area and a non-raised area. The raised area and the non-raised area are coordinated to control the axial movement of the valve core, thereby controlling the opening and closing of each oil circuit.

[0020] In some embodiments, a first half oil groove and five return spring grooves are provided on the inner surface of the first end of the valve body. The first half oil groove connects the second oil port B and the third oil port P. The cross section of the first half oil groove is semicircular.

[0021] The oil passage guide is provided with a first through hole, a second through hole, a third through hole, and a fourth through hole corresponding to the first oil port A, the second oil port B, the third oil port P, and the fourth oil port T. A second half oil groove is provided between the second through hole and the third through hole on the side of the oil passage guide that contacts the valve body. The cross section of the second half oil groove is semicircular, and matches with the first half oil groove to form a cylindrical first oil passage.

[0022] The oil guide plate is provided with five third half oil grooves on the side in contact with the cover plate, and the five third half oil grooves are respectively provided between the first through hole and the second through hole, between the second through hole and the fourth through hole, between the fourth through hole and the third through hole, between the third through hole and the first through hole, and between the first through hole and the fourth through hole;

[0023] The oil guide plate is provided with five first valve core through holes, each of which is coaxial with a corresponding return spring groove on the valve body;

[0024] The cover plate is provided with five second valve core through holes, each of which is coaxial with the corresponding first valve core through hole on the oil circuit guide plate. Five fourth half oil guide grooves are provided on the side of the cover plate that cooperates with the oil circuit guide plate. The five fourth half oil guide grooves match the five third half oil grooves on the oil circuit guide plate to form a cylindrical second oil circuit AB, third oil circuit BT, fourth oil circuit TP, fifth oil circuit PA, and sixth oil circuit AT.

[0025] In some embodiments, a cyclic switching four-way valve is further provided, comprising a valve body, a return spring, an oil circuit guide plate, a plurality of valve cores, a cover plate, and a control disk, wherein the oil circuit guide plate, the cover plate, and the control disk are sequentially arranged within the valve body along a first direction, and an oil circuit is provided between the valve body and the oil circuit guide plate, and between the oil circuit guide plate and the cover plate;

[0026] The multiple valve cores all pass through the oil guide plate and the cover plate, and one end abuts against the return spring and the other end abuts against the control disk. One end of the return spring abuts against the first end of the valve body.

[0027] The control disk can rotate around an axis parallel to the first direction, and is used to control the axial positions of the multiple valve cores to achieve cyclic switching of the oil circuit.

[0028] In some embodiments, a cyclic switching four-position four-way valve is further provided, the cyclic switching four-position four-way valve comprising a valve body, a return spring, an oil circuit guide plate, a plurality of valve cores, a cover plate, and a control disk, wherein the oil circuit guide plate, the cover plate, and the control disk are sequentially arranged within the valve body along a first direction, and an oil circuit is provided between the valve body and the oil circuit guide plate, and between the oil circuit guide plate and the cover plate;

[0029] The multiple valve cores all pass through the oil guide plate and the cover plate, and one end abuts against the return spring and the other end abuts against the control disk. One end of the return spring abuts against the first end of the valve body.

[0030] The control disk can rotate around an axis parallel to the first direction, and is used to control the axial positions of the multiple valve cores to achieve cyclic switching of the oil circuit.

[0031] In some embodiments, a vehicle is further provided, comprising the oil-gas interconnected suspension system as described in any one of the above items.

[0032] Compared to the prior art, the present invention has the following beneficial effects: The present invention replaces the traditional four-position four-way valve with a cyclic switching four-way valve product controlled by a control disk, achieving functions such as more convenient oil circuit switching, faster response speed, cyclic configuration switching, and arbitrary configuration sequence arrangement. In some embodiments of the present application, the vehicle oil-gas interconnected suspension system and vehicle adopt a cyclic switching four-way valve, each valve core is used to control the opening and closing of different oil circuits. When the control disk rotates, the oil circuit configuration can be switched. Cyclic switching can be performed in any arrangement sequence as needed, which can meet the needs of different oil circuit configurations and has high flexibility and operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the overall structure of a vehicle oil-gas interconnected suspension system according to some embodiments of the present invention.

[0034] Figure 2 1 is an exploded view of a cyclic switching four-way valve structure in some embodiments of the present invention.

[0035] Figure 3 2 is a cross-sectional view of a cyclic switching four-way valve structure in some embodiments of the present invention.

[0036] Figure 4 Schematic diagram of the valve body in some embodiments of the present invention.

[0037] Figure 5 Schematic diagram of the oil guide plate in some embodiments of the present invention.

[0038] Figure 6 Schematic diagram of a cover plate in some embodiments of the present invention.

[0039] Figure 7Schematic diagram of a control panel in some embodiments of the present invention.

[0040] Figure 8 This is an oil circuit switching diagram in some embodiments of the present invention.

[0041] Figure 9 This is an oil circuit switching diagram in some embodiments of the present invention.

[0042] Figure 10 Schematic diagram of a model of an oil circuit guide plate in some embodiments of the present invention.

[0043] Figure 11 Schematic diagram of an independent valve core in some embodiments of the present invention.

[0044] Figure 12 Schematic diagram of the central valve core in some embodiments of the present invention.

[0045] Figure 13 Schematic diagram of the third valve core in some embodiments of the present invention.

[0046] Figure 14 Schematic diagram of the three-dimensional structure of the control panel according to some embodiments of the present invention.

[0047] Figure 15 Schematic diagram of the positions of the valve core and the control disk in some embodiments of the present invention. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0050] Figure 1 This is a schematic diagram of the overall structure of a vehicle oil-gas interconnected suspension system according to an embodiment of the present invention. Figure 1In some embodiments, a vehicle oil-gas interconnected suspension system is provided, which includes: a left suspension hydraulic cylinder 100 and a right suspension hydraulic cylinder 200, a first left accumulator 300 and a second left accumulator 400, a first right accumulator 500 and a second right accumulator 600, and a hydraulic control device.

[0051] Both the left suspension hydraulic cylinder 100 and the right suspension hydraulic cylinder 200 have a piston rod and a cylinder body. One end of the piston rod is connected to the vehicle frame, and the cylinder body is connected to the axle. Each of the left and right suspension hydraulic cylinders includes a first chamber and a second chamber. Specifically, the left suspension hydraulic cylinder internally forms a first chamber 1001 and a second chamber 1002, and the right suspension hydraulic cylinder internally forms a first chamber 2001 and a second chamber 2002.

[0052] The first left accumulator 300 and the second left accumulator 400 are connected to the first and second chambers of the left suspension hydraulic cylinder, respectively. The first right accumulator 500 and the second right accumulator 600 are connected to the first and second chambers of the right suspension hydraulic cylinder, respectively. Specifically, the first left accumulator is connected to the first chamber of the left suspension hydraulic cylinder, and the second left accumulator is connected to the second chamber of the left suspension hydraulic cylinder. The first right accumulator is connected to the first chamber of the right suspension hydraulic cylinder, and the second right accumulator is connected to the second chamber of the right suspension hydraulic cylinder.

[0053] The hydraulic control device is connected to the left suspension hydraulic cylinder and the right suspension hydraulic cylinder and is used to control the flow of hydraulic oil between the left suspension hydraulic cylinder and the right suspension hydraulic cylinder.

[0054] In some embodiments, the hydraulic control device includes a cyclic switching four-way valve 700 .

[0055] Figure 2 1 is an exploded view of a cyclic switching four-way valve structure in some embodiments of the present invention. Figure 3 2 is a cross-sectional view of a cyclic switching four-way valve structure in some embodiments of the present invention.

[0056] refer to Figure 2 and Figure 3 In some embodiments, a cyclic switching four-way valve includes a valve body 1, a return spring 2, an oil circuit guide plate 3, multiple valve cores, a cover plate 6, and a control disk 8. The oil circuit guide plate 3, the cover plate 6, and the control disk 8 are arranged in sequence in the valve body 1 along a first direction. There is an oil circuit between the valve body 1 and the oil circuit guide plate 3, and between the oil circuit guide plate 3 and the cover plate 6.

[0057] Figure 4 Schematic diagrams of valve bodies in some embodiments of the present invention, wherein (a) is the outer side of the valve body, and (b) is the inner side of the valve body.

[0058] refer to Figure 4 The valve body 1 has a first oil port 101, a second oil port 102, a third oil port 103, and a fourth oil port 104 extending through the first end along the first direction, corresponding to oil port A, oil port B, oil port P, and oil port T in the figure, respectively, and communicating with the first chamber 1001 of the left suspension hydraulic cylinder, the second chamber 1002 of the left suspension hydraulic cylinder, the first chamber 2001 of the right suspension hydraulic cylinder, and the second chamber 2002 of the right suspension hydraulic cylinder, respectively. In the embodiment of the present application, the first oil port 101, the second oil port 102, the third oil port 103, and the fourth oil port 104 may also be referred to as the first oil port A, the second oil port B, the third oil port P, and the fourth oil port T, respectively.

[0059] Each of the multiple valve cores passes through the oil guide plate 3 and the cover plate 6, with one end abutting against the return spring 2 and the other end abutting against the control disk 8. One end of the return spring 2 abuts against the first end of the valve body 1. The return spring 2 has an initial return force that can force one end of the corresponding valve core to abut against the side of the control disk 8.

[0060] The control disk 8 can rotate around an axis parallel to a first direction to control the axial position of the plurality of valve cores and realize cyclic switching of the oil circuit. The first direction is the axial direction of the valve core, that is, the moving direction of the valve core.

[0061] In some embodiments, each valve core corresponds to a return spring. A corresponding valve core is provided in each oil circuit. The multiple valve cores are used to control each oil circuit. Each valve core is generally cylindrical, with a thin cylindrical region and a thick cylindrical region. When the control disk 8 presses the corresponding valve core downward, the thin cylindrical region passes through the oil circuit, opening the oil circuit. When the return spring 2 pushes the corresponding valve core back to its original position, the thick cylindrical region blocks the oil circuit, closing it.

[0062] Figure 5 Schematic diagrams of the oil guide plate in some embodiments of the present invention, wherein (a) is the side of the oil guide plate facing away from the valve body, and (b) is the side of the oil guide plate contacting the valve body. Figure 10 Schematic diagram of a model of an oil circuit guide plate in some embodiments of the present invention.

[0063] refer to Figure 5 and Figure 10In some embodiments, a first oil passage BP is defined between the valve body 1 and the oil passage guide plate 3, connecting the second oil port 102 and the third oil port 103. A second oil passage AB is defined between the oil passage guide plate 3 and the cover plate 6, connecting the first oil port 101 and the second oil port 102; a third oil passage BT is defined between the second oil port 102 and the fourth oil port 104; a fourth oil passage TP is defined between the fourth oil port 104 and the third oil port 103; a fifth oil passage PA is defined between the third oil port 103 and the first oil port 101; and a sixth oil passage AT is defined between the first oil port 101 and the fourth oil port 104.

[0064] In some embodiments, the valve core includes a first valve core 4 , a second valve core 5 , and a third valve core 7 .

[0065] In some embodiments, the first valve core 4 has two independent valve cores, including a first independent valve core 41 and a second independent valve core 42 . The first independent valve core is disposed on the third oil passage BT, and the second independent valve core is disposed on the fifth oil passage PA.

[0066] Figure 11 Schematic diagram of independent valve core in some embodiments of the present invention. Figure 11 The independent valve core has a first shaft section 401 and a second shaft section 402 in the axial direction. The diameter of the first shaft section is larger than the diameter of the second shaft section. The first shaft section is a thick cylindrical region, and the second shaft section is a thin cylindrical region. The diameter of the first shaft section is larger than the diameters of the third oil passage BT and the fifth oil passage PA. The diameter of the second shaft section is smaller than the diameters of the third oil passage BT and the fifth oil passage PA.

[0067] In some embodiments, the second valve core 5 has a central valve core, which is provided on the first oil passage BP and the sixth oil passage AT, and is used to simultaneously control the first oil passage BP and the sixth oil passage AT.

[0068] Figure 12 Schematic diagram of the central valve core in some embodiments of the present invention. Figure 12In some embodiments, the central valve core 5 comprises, in axial order, a first section 501, a second section 502, a third section 503, and a fourth section 504. The diameter of the first section is greater than that of the second section, the diameter of the third section is greater than that of the fourth section, and the diameter of the first section is equal to that of the third section. The first and third sections are coarse cylindrical regions, while the second and fourth sections are thin cylindrical regions. The bottom length of the central valve core 5, i.e., the length of the first section, is greater than the diameter of the first oil passage. In some embodiments, the lengths of the first, second, third, and fourth sections are equal. The first and second sections control the opening and closing of the first oil passage BP. The diameter of the first section is greater than that of the first oil passage BP, while the diameter of the second section is smaller than that of the first oil passage BP. The third and fourth sections control the opening and closing of the sixth oil passage AT. The diameter of the third section is greater than that of the sixth oil passage AT, while the diameter of the fourth section is smaller than that of the sixth oil passage AT.

[0069] In some embodiments, the thickness of the oil passage guide plate 3 is greater than twice the sum of the diameters of the first oil passage BP and the sixth oil passage AT, ensuring normal opening and closing functions of the first oil passage BP and the sixth oil passage AT.

[0070] In some embodiments, the third valve core 7 is disposed on the second oil path AB and the fourth oil path TP.

[0071] Figure 13 Schematic diagram of the third valve core in some embodiments of the present invention. Figure 13 In some embodiments, the third valve core 7 is a one-piece valve core, used to simultaneously control the second oil circuit AB and the fourth oil circuit TP. In the embodiment of the present application, the third valve cores of the second oil circuit AB and the fourth oil circuit TP are combined into a one-piece valve core, and the cover plate 6 is provided with a relief groove to prevent interference with the one-piece valve core, resulting in a more compact structure.

[0072] Specifically, in some embodiments, the conjoined valve core is formed by connecting two originally independent valve cores through a connecting rod to form a whole, so that the two independent valve cores move synchronously and control the second oil circuit AB and the fourth oil circuit TP at the same time.

[0073] In some embodiments, the conjoined valve core includes a first branch valve core 71 and a second branch valve core 72, which are connected by a connecting rod 73. The first branch valve core 71 is disposed on the second oil path AB, and the second branch valve core 72 is disposed on the fourth oil path TP.

[0074] The first branch valve core 71 has a first shaft section 711 and a second shaft section 712 in the axial direction. The diameter of the first shaft section 711 is larger than the diameter of the second shaft section 712. The first shaft section 711 is a thick cylindrical region, while the second shaft section 712 is a thin cylindrical region. The diameter of the first shaft section 711 is larger than the diameter of the second oil passage AB. The diameter of the second shaft section 712 is smaller than the diameter of the second oil passage AB.

[0075] The second branch valve core 72 has a first shaft section 721 and a second shaft section 722, arranged axially. The diameter of the first shaft section 721 is larger than the diameter of the second shaft section 722. The first shaft section 721 is a thick cylindrical region, while the second shaft section 722 is a thin cylindrical region. The diameter of the first shaft section 721 is larger than the diameter of the fourth oil passage TP. The diameter of the second shaft section 722 is smaller than the diameter of the fourth oil passage TP.

[0076] In some embodiments, the cyclic switching four-way valve is a four-position four-way valve.

[0077] Figure 6 Schematic diagrams of the cover plate in some embodiments of the present invention, wherein (a) is the side of the cover plate facing away from the oil guide plate, and (b) is the side of the cover plate contacting the oil guide plate. Figure 7 Schematic diagrams of the control disk in some embodiments of the present invention, wherein (a) is the side of the control disk that contacts the valve core, and (b) is the side of the control disk that faces away from the valve core. Figure 14 Schematic diagram of the three-dimensional structure of the control panel according to some embodiments of the present invention.

[0078] refer to Figure 6 、 Figure 7 、 Figure 14 In some embodiments, the control disk 8 has a locating pin 805 at the center of one side abutting the valve core, and a rotating shaft 807 at the center of the other side. Four tracks 801, 802, 803, and 804 are radially arranged on the control disk 8 from the inside outward around the locating pin 805. Each track has a raised area 806 and a non-raised area. The raised area 806 cooperates with the non-raised area to control the axial movement of the valve core, thereby controlling the opening and closing of each oil circuit.

[0079] In some embodiments, a first half oil groove 106 and five return spring grooves 105 are provided on the inner surface of the first end of the valve body 1, and the first half oil groove 106 connects the second oil port B102 and the third oil port P103; the cross-section of the first half oil groove 106 is semicircular.

[0080] The oil circuit guide plate 3 is provided with a first through hole 301, a second through hole 302, a third through hole 303 and a fourth through hole 304 corresponding to the first oil port A, the second oil port B, the third oil port P and the fourth oil port T. A second half oil groove 307 is provided between the second through hole 302 and the third through hole 303 on the side of the oil circuit guide plate 3 in contact with the valve body 1. The cross-section of the second half oil groove 307 is semicircular, and matches with the first half oil groove 106 to form a cylindrical first oil circuit.

[0081] In some embodiments, five third half oil grooves 305 are provided on the side where the oil guide plate 3 contacts the cover plate 6, and the five third half oil grooves are respectively arranged between the first through hole 301 and the second through hole 302, between the second through hole 302 and the fourth through hole 304, between the fourth through hole 304 and the third through hole 303, between the third through hole 303 and the first through hole 301, and between the first through hole 301 and the fourth through hole 304.

[0082] Five first valve core through holes 306 are provided on the oil circuit guide plate 3 , and each first valve core through hole 306 is coaxial with a corresponding return spring groove 105 on the valve body 1 .

[0083] The cover plate 6 is provided with five second valve core through holes 601, each of which is coaxial with the corresponding first valve core through hole 306 on the oil circuit guide plate 3. Five fourth half oil guide grooves 603 are provided on the surface of the cover plate 6 that cooperates with the oil circuit guide plate 3. The five fourth half oil guide grooves 603 match with the five third half oil guide grooves 305 on the oil circuit guide plate 3 to form a cylindrical second oil circuit AB, a third oil circuit BT, a fourth oil circuit TP, a fifth oil circuit PA, and a sixth oil circuit AT.

[0084] In some embodiments, the diameter of the thick cylindrical region of each valve core is larger than the diameter of the corresponding oil passage, and the diameter of the thin cylindrical region of each valve core is smaller than the diameter of the corresponding oil passage.

[0085] In some embodiments, a valve body cover 9 is provided at the second end of the valve body 1 away from the first end along the first direction, and the valve body cover 9 is fixedly connected to the valve body 1 by bolts.

[0086] In some embodiments, a cylindrical fixing groove 602 is provided on the side of the cover plate 6 close to the second end, and a limiting pin 805 is provided on the side of the control panel 8 close to the cover plate 6. The limiting pin matches the cylindrical fixing groove 602 and is used to position the control panel 8.

[0087] In some embodiments, a side of the cover plate 6 near the second end is provided with an avoidance groove 604. When the connecting rod of the integrated valve core is pressed down, the connecting rod can be located in the avoidance groove to prevent the cover plate from interfering with the integrated valve core.

[0088] In some embodiments, the valve body cover 9 has a rotation shaft through-hole, through which the rotation shaft 807 at the center of the control disk 8 passes to connect to a drive mechanism. The drive mechanism is used to drive the control disk 8 to rotate about an axis parallel to the first direction, thereby controlling the axial positions of the multiple valve cores and achieving cyclic switching of the oil circuit.

[0089] In some embodiments, the height difference between the raised area 806 and the non-raised area of ​​the control disk is greater than or equal to the maximum diameter of the oil circuit, ensuring that the opening and closing functions of the control oil circuit are normal.

[0090] In some embodiments, a rounded portion is provided on the portion of the valve core that contacts the control disk, and the connection between the raised area 806 of the control disk and the non-raised area adopts a bevel plus rounded portion to ensure smooth switching and switching speed.

[0091] When switching, by rotating the control disk 8, the valve cores at different positions are switched to the required positions under the combined action of the raised area 806 and the return spring 2. By continuing to rotate the control disk 8, it is possible to switch smoothly to different channels. The control disk 8 returns to its initial position after one rotation.

[0092] In some embodiments, by changing the size of the control disk, the number and position of the tracks, and the position of the raised area, the cyclic switching four-way valve can be designed as a cyclic switching two-position four-way valve, a cyclic switching three-position four-way valve, a cyclic switching four-position four-way valve, or a cyclic switching five-position four-way valve.

[0093] Figure 8 This is an oil circuit switching diagram in some embodiments of the present invention. Figure 8 In some embodiments, the cyclic switching four-way valve is a cyclic switching four-position four-way valve. The control disk 8 is provided with four tracks 801, 802, 803, and 804 radially from the inside outward around a positioning pin 805. These tracks are the first track 801, the second track 802, the third track 803, and the fourth track 804. Each track has a raised area 806 and a non-raised area. The raised area 806 cooperates with the non-raised area to control the axial movement of the valve core, thereby controlling the opening and closing of each oil circuit.

[0094] In some embodiments, the second valve core 5, or the central valve core, has a first contact 505 at its end that contacts the control disk 8. The third valve core 7, or the conjoined valve core, has a second contact 74 on its connecting rod 73 that contacts the control disk 8. The second independent valve core 42 has a third contact 423 at its end that contacts the control disk 8, and the first independent valve core 41 has a fourth contact 413 at its end that contacts the control disk 8.

[0095] In the embodiment of the present application, the first track 801 corresponds to controlling the second valve core 5, i.e., the central valve core, the second track 802 corresponds to controlling the third valve core 7, i.e., the connected valve core, the third track 803 corresponds to controlling the second independent valve core, and the fourth track 804 corresponds to controlling the first independent valve core.

[0096] The first track 801 corresponds to synchronously controlling the switches of the first oil circuit BP and the sixth oil circuit AT; the second track 802 corresponds to synchronously controlling the switches of the second oil circuit AB and the fourth oil circuit TP; the third track 803 corresponds to controlling the switch of the fifth oil circuit PA; and the fourth track 804 corresponds to controlling the switch of the third oil circuit BT.

[0097] The center of the raised area 8061 of the first track 801 is located at the first angular position of the control disk.

[0098] The center of the raised area 8062 where the second track 802 is located is located at a second angular position of the control disk, and the second angular position is at a 90-degree angle to the first angular position.

[0099] The center of the raised area 8063 of the third track 803 is located at a third angular position of the control disk, the third angular position is at a 90-degree angle to the first angular position, and the third angular position is the same as the second angular position.

[0100] The center of the raised area 8064 of the fourth track 804 is located at the fourth angular position of the control disk. The fourth angular position is 270 degrees from the first angular position, and the fourth angular position is 180 degrees from the third angular position, that is, they are relatively set.

[0101] Figure 15 Schematic diagram of the positions of the valve core and the control disk in some embodiments of the present invention. Figure 15 The control panel in the middle is a perspective view, and the viewing direction of the control panel is the same as that of other components.

[0102] In some embodiments, the control panel 8 has an indicator mark for identifying the current rotation position. In some embodiments, the indicator mark is an arrow. Figure 15 Taking the position shown as an example, the control panel is at 3 o'clock. Specifically, the raised area 8063 of the third track of the control panel 8 abuts the third contact 423 of the second independent valve core 42, the raised area 8064 of the fourth track of the control panel 8 abuts the fourth contact 413 of the first independent valve core 41, and the non-raised areas of the first track and the second track of the control panel 8 abut the first contact 505 of the central valve core and the second contact 74 of the conjoined valve core, respectively. Correspondingly, the third oil passage BT and the fifth oil passage PA are both open, while the first oil passage BP, the second oil passage AB, the fourth oil passage TP, and the sixth oil passage AT are all closed.

[0103] To achieve Figure 8 Taking the combined switching of the oil circuit switches in as an example, the switching is cyclically switched from state 1-state 2-state 3-state 4 (clockwise in the figure): the oil circuit switch states corresponding to each track are as follows.

[0104] State 1 (control panel 8 is at 3 o'clock): 801 is off, 802 is off, 803 is on, 804 is on, the third oil circuit BT and the fifth oil circuit PA are both open, the first oil circuit BP, the second oil circuit AB, the fourth oil circuit TP, and the sixth oil circuit AT are all closed.

[0105] State 2 (control panel 8 is at 6 o'clock): 801 is open, 802 is closed, 803 is closed, 804 is closed, the first oil circuit BP and the sixth oil circuit AT are both open, the second oil circuit AB, the third oil circuit BT, the fourth oil circuit TP, and the fifth oil circuit PA are all closed.

[0106] State 3 (control panel 8 is at 9 o'clock): 801 is off, 802 is on, 803 is off, 804 is off, the second oil circuit AB and the fourth oil circuit TP are both open, the first oil circuit BP, the third oil circuit BT, the fifth oil circuit PA, and the sixth oil circuit AT are all closed.

[0107] State 4 (control panel 8 is at 12 o'clock): 801 is off, 802 is off, 803 is off, 804 is off, the first oil circuit BP, the second oil circuit AB, the third oil circuit BT, the fourth oil circuit TP, the fifth oil circuit PA, and the sixth oil circuit AT are all closed.

[0108] Figure 9 This is an oil circuit switching diagram in some embodiments of the present invention. Figure 9 In some embodiments, the cyclic switching four-way valve is a cyclic switching five-position four-way valve. In this embodiment, Figure 9 The switch combination between different configurations can add a state position to achieve the first oil circuit BP, the second oil circuit AB, the third oil circuit BT, the fourth oil circuit TP, the fifth oil circuit PA, and the sixth oil circuit AT are all in the open state.

[0109] In some embodiments, the cyclic switching four-way valve can be designed as a cyclic switching two-position four-way valve or a cyclic switching three-position four-way valve by increasing or decreasing the number and position of tracks and the position of raised areas.

[0110] In some embodiments, the present application further provides a cyclic switching four-way valve, comprising a valve body 1, a return spring 2, an oil circuit guide plate 3, a plurality of valve cores, a cover plate 6, and a control disk 8. The oil circuit guide plate 3, the cover plate 6, and the control disk 8 are sequentially arranged within the valve body 1 along a first direction. Oil circuits are defined between the valve body 1 and the oil circuit guide plate 3, and between the oil circuit guide plate 3 and the cover plate 6. The plurality of valve cores pass through the oil circuit guide plate 3 and the cover plate 6, and one end abuts against the return spring 2 and the other end abuts against the control disk 8. One end of the return spring 2 abuts against the first end of the valve body 1. The control disk 8 is rotatable about an axis parallel to the first direction to control the axial position of the plurality of valve cores, thereby achieving cyclic switching of the oil circuit.

[0111] In some embodiments, the cyclic switching four-way valve is designed as a cyclic switching two-position four-way valve, a cyclic switching three-position four-way valve, a cyclic switching four-position four-way valve, or a cyclic switching five-position four-way valve. In some embodiments, the cyclic switching four-way valve is a cyclic switching four-position four-way valve. In some embodiments, the cyclic switching four-way valve is the cyclic switching four-way valve in the oil-gas interconnected suspension system described above.

[0112] In some embodiments, the present application further provides a cyclic switching four-position four-way valve, which includes a valve body 1, a return spring 2, an oil circuit guide plate 3, multiple valve cores, a cover plate 6, and a control disk 8. The oil circuit guide plate 3, the cover plate 6, and the control disk 8 are sequentially arranged within the valve body 1 along a first direction. Oil circuits are provided between the valve body 1 and the oil circuit guide plate 3, and between the oil circuit guide plate 3 and the cover plate 6. The multiple valve cores all pass through the oil circuit guide plate 3 and the cover plate 6, and one end abuts the return spring 2 and the other end abuts the control disk 8. One end of the return spring 2 abuts the first end of the valve body 1. The control disk 8 can rotate about an axis parallel to the first direction to control the axial position of the multiple valve cores, thereby achieving cyclic switching of the oil circuit.

[0113] In some embodiments, the cyclic switching four-position four-way valve is the cyclic switching four-position four-way valve in the oil-gas interconnected suspension system in the above embodiment.

[0114] In some embodiments, the present application further provides an oil-gas interconnected suspension system, which includes a cyclic switching four-way valve or a cyclic switching four-position four-way valve as described in any of the above embodiments.

[0115] In some embodiments, the present application further provides a vehicle comprising the oil-gas interconnected suspension system described in any of the above embodiments. The vehicle can be a sedan, SUV, off-road vehicle, commercial vehicle, or any other type of vehicle. The vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a gasoline-powered vehicle. Of course, as new energy vehicles develop and the industry matures, the vehicle can be adapted for use in new energy vehicles. New energy vehicles include electric vehicles and hydrogen fuel vehicles.

[0116] The oil-gas interconnected suspension system is installed on the vehicle chassis, with the left and right suspension hydraulic cylinders mounted on the left and right sides of the vehicle, respectively. The piston rods of the left and right suspension hydraulic cylinders are connected to the vehicle frame, and the cylinder bodies are connected to the axles. The first and second left accumulators, as well as the first and second right accumulators, are installed in appropriate locations on the vehicle and connected to the corresponding hydraulic cylinder chambers. A cyclic switching four-way valve is installed in the center of the vehicle chassis and connected to the left and right suspension hydraulic cylinders via hydraulic lines.

[0117] The vehicle also includes a control system that controls the operating position of the cyclic switching four-way valve based on the vehicle's driving state and road conditions. The control system receives signals from the vehicle speed sensor, acceleration sensor, steering wheel angle sensor, and other sensors, and analyzes them to determine the valve's operating position, thereby enabling intelligent adjustment of the suspension system.

[0118] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vehicle oil-gas interconnected suspension system, characterized in that: The vehicle oil-gas interconnected suspension system comprises: a left suspension hydraulic cylinder (100) and a right suspension hydraulic cylinder (200), both of which have a piston rod and a cylinder body, one end of the piston rod is used to connect to the vehicle frame, and the cylinder body is connected to the vehicle axle, and the left suspension hydraulic cylinder and the right suspension hydraulic cylinder both comprise a first chamber and a second chamber; A cyclic switching four-way valve comprises a valve body (1), a return spring (2), an oil circuit guide plate (3), a plurality of valve cores, a cover plate (6), and a control disk (8); the oil circuit guide plate (3), the cover plate (6), and the control disk (8) are sequentially arranged in the valve body (1) along a first direction; and an oil circuit is provided between the valve body (1) and the oil circuit guide plate (3), and between the oil circuit guide plate (3) and the cover plate (6); The valve body (1) is provided with a first oil port A (101), a second oil port B (102), a third oil port P (103), and a fourth oil port T (104) through the first end along the first direction, which are respectively communicated with the first chamber (1001) of the left suspension hydraulic cylinder, the second chamber (1002) of the left suspension hydraulic cylinder, the first chamber (2001) of the right suspension hydraulic cylinder, and the second chamber (2002) of the right suspension hydraulic cylinder; The plurality of valve cores all pass through the oil circuit guide plate (3) and the cover plate (6), and one end thereof abuts against the return spring (2) and the other end abuts against the control disk (8); one end of the return spring (2) abuts against the first end of the valve body (1); The control disk (8) can rotate around an axis parallel to the first direction, and is used to control the axial positions of the multiple valve cores to achieve cyclic switching of the oil circuit.

2. The vehicle oil-gas interconnected suspension system according to claim 1, characterized in that: The valve core comprises a first valve core (4), a second valve core (5), and a third valve core (7); A first oil passage BP connecting the second oil port B (102) and the third oil port P (103) is provided between the valve body (1) and the oil passage guide plate (3); Between the oil passage guide plate (3) and the cover plate (6) are provided a second oil passage AB connecting the first oil port A (101) and the second oil port B (102), a third oil passage BT connecting the second oil port B (102) and the fourth oil port T (104), a fourth oil passage TP connecting the fourth oil port T (104) and the third oil port P (103), a fifth oil passage PA connecting the third oil port P (103) and the first oil port A (101), and a sixth oil passage AT connecting the first oil port A (101) and the fourth oil port T (104); The first valve core (4) has two independent valve cores, including a first independent valve core and a second independent valve core, the first independent valve core is arranged on the third oil passage BT, and the second independent valve core is arranged on the fifth oil passage PA; The second valve core (5) has a central valve core, which is arranged on the first oil path BP and the sixth oil path AT, and is used to simultaneously control the first oil path BP and the sixth oil path AT; The third valve core (7) is arranged on the second oil path AB and the fourth oil path TP.

3. The vehicle oil-gas interconnected suspension system according to claim 2, characterized in that: The third valve core (7) is a connected valve core, which is used to simultaneously control the second oil circuit AB and the fourth oil circuit TP.

4. The vehicle oil-gas interconnected suspension system according to claim 3, characterized in that: The central valve core has a first shaft segment, a second shaft segment, a third shaft segment and a fourth shaft segment in sequence along the axial direction; the diameter of the first shaft segment is larger than the diameter of the second shaft segment, the diameter of the third shaft segment is larger than the diameter of the fourth shaft segment, and the diameter of the first shaft segment is equal to the diameter of the third shaft segment.

5. The vehicle oil-gas interconnected suspension system according to claim 4, characterized in that: The cyclic switching four-way valve is a four-position four-way valve.

6. The vehicle oil-gas interconnected suspension system according to claim 5, characterized in that: The control disk (8) has a positioning pin (805) at its center, and four tracks (801, 802, 803, 804) are arranged on the control disk (8) in radial order from the inside to the outside around the positioning pin (805). Each track has a raised area (806) and a non-raised area. The raised area (806) cooperates with the non-raised area to control the axial movement of the valve core, thereby controlling the opening and closing of each oil circuit.

7. The vehicle oil-gas interconnected suspension system according to claim 6, characterized in that: A first half oil groove (106) and five return spring grooves (105) are provided on the inner surface of the first end of the valve body (1), and the first half oil groove (106) connects the second oil port B (102) and the third oil port P (103); the cross section of the first half oil groove (106) is semicircular; The oil circuit guide plate (3) is provided with a first through hole (301), a second through hole (302), a third through hole (303), and a fourth through hole (304) corresponding to the first oil port A (101), the second oil port B (102), the third oil port P (103), and the fourth oil port T (104); a second half oil groove (307) is provided between the second through hole (302) and the third through hole (303) on the side of the oil circuit guide plate (3) in contact with the valve body (1); the cross section of the second half oil groove (307) is semicircular, and matches the first half oil groove (106) to form a cylindrical first oil circuit; Five third half oil grooves (305) are provided on the side of the oil guide plate (3) in contact with the cover plate (6), and the five third half oil grooves are respectively provided between the first through hole (301) and the second through hole (302), between the second through hole (302) and the fourth through hole (304), between the fourth through hole (304) and the third through hole (303), between the third through hole (303) and the first through hole (301), and between the first through hole (301) and the fourth through hole (304); Five first valve core through holes (306) are provided on the oil circuit guide plate (3), and each first valve core through hole (306) is coaxial with a corresponding return spring groove (105) on the valve body (1); The cover plate (6) is provided with five second valve core through holes (601), each second valve core through hole (601) is coaxial with the corresponding first valve core through hole (306) on the oil circuit guide plate (3), and five fourth semi-oil guide grooves (603) are provided on the side of the cover plate (6) that matches the oil circuit guide plate (3). The five fourth semi-oil guide grooves (603) match with the five third semi-oil guide grooves (305) on the oil circuit guide plate (3) to form a cylindrical second oil circuit AB, a third oil circuit BT, a fourth oil circuit TP, a fifth oil circuit PA, and a sixth oil circuit AT.

8. A cyclic switching four-way valve, characterized in that: The cyclic switching four-way valve comprises a valve body (1), a return spring (2), an oil circuit guide plate (3), a plurality of valve cores, a cover plate (6), and a control disk (8); the oil circuit guide plate (3), the cover plate (6), and the control disk (8) are sequentially arranged in the valve body (1) along a first direction; and an oil circuit is provided between the valve body (1) and the oil circuit guide plate (3), and between the oil circuit guide plate (3) and the cover plate (6); The plurality of valve cores all pass through the oil circuit guide plate (3) and the cover plate (6), and one end thereof abuts against the return spring (2) and the other end abuts against the control disk (8); one end of the return spring (2) abuts against the first end of the valve body (1); The control disk (8) can rotate around an axis parallel to the first direction, and is used to control the axial positions of the multiple valve cores to achieve cyclic switching of the oil circuit.

9. A cyclic switching four-position four-way valve, characterized in that: The cyclic switching four-position four-way valve comprises a valve body (1), a return spring (2), an oil circuit guide plate (3), a plurality of valve cores, a cover plate (6), and a control disk (8); the oil circuit guide plate (3), the cover plate (6), and the control disk (8) are sequentially arranged in the valve body (1) along a first direction; and an oil circuit is provided between the valve body (1) and the oil circuit guide plate (3), and between the oil circuit guide plate (3) and the cover plate (6); The plurality of valve cores all pass through the oil circuit guide plate (3) and the cover plate (6), and one end thereof abuts against the return spring (2) and the other end abuts against the control disk (8); one end of the return spring (2) abuts against the first end of the valve body (1); The control disk (8) can rotate around an axis parallel to the first direction, and is used to control the axial positions of the multiple valve cores to achieve cyclic switching of the oil circuit.

10. A vehicle, characterized in that: The vehicle comprises the oil-gas interconnected suspension system according to any one of claims 1-7.

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