Vehicle suspension and vehicle

Abstract

The invention provides a vehicle suspension and a vehicle. The vehicle suspension comprises a frame body; the front air bag assembly comprises a first air bag and a second air bag, and the first air bag and the second air bag are arranged on the two sides of the front end of the frame body; the rear air bag assembly comprises a third air bag and a fourth air bag, and the third air bag and the fourth air bag are arranged on the two sides of the rear end of the frame body; the airflow pipeline is connected with the first air bag, the second air bag, the third air bag and the fourth air bag and used for feeding air into or discharging air from the first air bag, the second air bag, the third air bag and the fourth air bag; the valve assembly is arranged on the airflow pipeline and used for controlling connection and disconnection between the first air bag and the second air bag, connection and disconnection between the third air bag and the fourth air bag and connection and disconnection between the front air bag assembly and the rear air bag assembly. Through the arrangement, when the vehicle is in a severe road condition, left and right air paths of the front air bag assembly and / or the rear air bag assembly are communicated, left and right linkage balance is carried out, and the stability of the vehicle in the running process is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle frames, and in particular to a vehicle suspension and a vehicle. Background Art

[0002] In the related art, the left and right airbags of the front and rear axles of the vehicle frame are independent of each other and cannot be connected, so the vehicle frame is in a four-point support state. On some roads, a tire may be suspended, which is not conducive to the stability of the vehicle during driving. Summary of the invention

[0003] The present application provides a vehicle suspension and a vehicle for improving the stability of the vehicle during driving.

[0004] In a first aspect, the present application provides a vehicle suspension, comprising:

[0005] Frame;

[0006] A front airbag assembly, comprising a first airbag and a second airbag, wherein the first airbag and the second airbag are arranged on both sides of the front end of the frame;

[0007] A rear airbag assembly, comprising a third airbag and a fourth airbag, wherein the third airbag and the fourth airbag are arranged on both sides of the rear end of the frame;

[0008] an airflow pipeline, connected to the first airbag, the second airbag, the third airbag and the fourth airbag, respectively, and used for supplying air to or exhausting air from the first airbag, the second airbag, the third airbag and the fourth airbag;

[0009] The valve assembly is arranged in the air flow pipeline, and is used to control the on-off between the first airbag and the second airbag, the on-off between the third airbag and the fourth airbag, and the on-off between the front airbag assembly and the rear airbag assembly.

[0010] Through the above arrangement, the first airbag and the second airbag of the front airbag assembly can be connected or disconnected with each other; the third airbag and the fourth airbag of the rear airbag assembly can be connected or disconnected with each other. When the first airbag and the second airbag are connected with each other, and the third airbag and the fourth airbag are connected with each other, the vehicle suspension is in a two-point support mode, the left and right air paths of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkage is balanced, which can reduce the imbalance of the whole vehicle due to unilateral suspension in the twisted section. When the first airbag and the second airbag are disconnected from each other, and the third airbag and the fourth airbag are connected with each other, the vehicle suspension is in a three-point positioning mode of the front two points and the rear one point, which can reduce the imbalance of the whole vehicle due to unilateral suspension in the twisted section, and is suitable for the state of the vehicle being unloaded or lightly loaded. When the first airbag and the second airbag are connected with each other, and the third airbag and the fourth airbag are disconnected from each other, the vehicle suspension is in a three-point support mode of the front one point and the rear two points, which can reduce the imbalance of the whole vehicle due to unilateral suspension in the twisted section, and is suitable for the state of the vehicle being heavily loaded. When the first airbag and the second airbag are disconnected from each other, and the third airbag and the fourth airbag are disconnected from each other, the vehicle suspension is in a four-point support mode, which is beneficial to improving the roll stiffness of the front and rear axle frames when driving at high speed. Through the above arrangement, when the vehicle is in bad road conditions, the left and right air paths of the front airbag assembly and / or the rear airbag assembly are connected to perform left and right linkage balance, thereby improving the stability of the vehicle during driving.

[0011] Optionally, the air flow line includes:

[0012] a main pipeline, an air intake pipeline and an exhaust pipeline, wherein the main pipeline is respectively connected to the first airbag, the second airbag, the third airbag and the fourth airbag;

[0013] an air intake pipeline, connected to the main pipeline, and used for supplying air to the first airbag, the second airbag, the third airbag, and the fourth airbag;

[0014] an exhaust pipeline, connected to the main pipeline, and used for exhausting air to the first airbag, the second airbag, the third airbag, and the fourth airbag;

[0015] The valve assembly is arranged on the main pipeline.

[0016] Optionally, the main pipeline includes:

[0017] Intermediate pipeline;

[0018] a first branch connecting the first airbag and the intermediate pipeline;

[0019] a second branch connecting the second airbag and the intermediate pipeline;

[0020] a third branch connecting the third airbag and the intermediate pipeline;

[0021] a fourth branch connecting the fourth airbag and the intermediate pipeline;

[0022] The valve assembly includes:

[0023] A first isolating valve, disposed in the intermediate pipeline;

[0024] a second isolation valve, disposed on the first branch;

[0025] a third isolation valve, disposed on the second branch;

[0026] a fourth isolating valve, arranged on the third branch;

[0027] a fifth isolating valve, arranged on the fourth branch;

[0028] When the first isolation valve is closed, the front airbag assembly is disconnected from the rear airbag assembly; when the first isolation valve is opened, the front airbag assembly is connected to the rear airbag assembly;

[0029] The second isolation valve and the third isolation valve are both opened, and the first airbag is connected to the second airbag; if either the second isolation valve or the third isolation valve is disconnected, the first airbag and the second airbag are disconnected;

[0030] When the fourth isolation valve and the fifth isolation valve are both opened, the third airbag is connected to the fourth airbag; when either the fourth isolation valve or the fifth isolation valve is disconnected, the third airbag is disconnected from the fourth airbag.

[0031] Optional, including:

[0032] A first sensor is arranged in the air intake pipeline;

[0033] A second sensor is arranged on the first branch;

[0034] a third sensor, disposed on the second branch;

[0035] a fourth sensor, arranged on the third branch;

[0036] The fifth sensor is arranged on the fourth branch.

[0037] Optionally, the main pipeline includes:

[0038] Intermediate pipeline;

[0039] a first front airbag branch connected to the intermediate pipeline, one end of the first front airbag branch being connected to the first airbag, and the other end of the first front airbag branch being connected to the second airbag;

[0040] a first rear airbag branch connected to the intermediate pipeline, one end of the first rear airbag branch connected to the third airbag, and the other end of the first rear airbag branch connected to the fourth airbag;

[0041] The valve assembly comprises:

[0042] a sixth isolating valve, arranged at the connection between the first front airbag branch and the intermediate pipeline; the sixth isolating valve comprises a first connection end that can be opened and closed, a second connection end that can be opened and closed, and a third connection end that can be opened and closed; the first connection end is connected to the intermediate pipeline, the second connection end is connected to the first airbag, and the third connection end is connected to the second airbag;

[0043] a seventh isolating valve, arranged at the connection between the first rear airbag branch and the intermediate pipeline; the seventh isolating valve comprises an openable and closable fourth connecting end, an openable and closable fifth connecting end and an openable and closable sixth connecting end, the fourth connecting end is connected to the intermediate pipeline, the fifth connecting end is connected to the third airbag, and the sixth connecting end is connected to the fourth airbag;

[0044] When the second connection end is connected to the third connection end, the first airbag is connected to the second airbag; when the second connection end is disconnected from the third connection end, the first airbag is disconnected from the second airbag;

[0045] When the fifth connection end is connected to the sixth connection end, the third airbag is connected to the fourth airbag; when the fifth connection end is disconnected from the sixth connection end, the third airbag is disconnected from the fourth airbag.

[0046] Optional, including:

[0047] a second front airbag branch, one end of the second front airbag branch being connected to the first airbag, and the other end of the second front airbag branch being connected to the second airbag;

[0048] a second rear airbag branch, one end of the second rear airbag branch being connected to the third airbag, and the other end of the second rear airbag branch being connected to the fourth airbag;

[0049] The valve assembly includes:

[0050] an eighth isolating valve, arranged in the second front airbag branch; when the eighth isolating valve is closed, the first airbag is disconnected from the second airbag; when the eighth isolating valve is opened, the first airbag is connected to the second airbag;

[0051] A ninth isolating valve is arranged in the second rear airbag branch; when the ninth isolating valve is closed, the third airbag is disconnected from the fourth airbag; when the ninth isolating valve is opened, the third airbag is connected to the fourth airbag.

[0052] Optionally, the main pipeline includes:

[0053] Intermediate pipeline;

[0054] a first branch connecting the first airbag and the intermediate pipeline;

[0055] a second branch connecting the second airbag and the intermediate pipeline;

[0056] a third branch connecting the third airbag and the intermediate pipeline;

[0057] a fourth branch connecting the fourth airbag and the intermediate pipeline;

[0058] The valve assembly includes:

[0059] a second isolation valve, disposed on the first branch;

[0060] a third isolation valve, disposed on the second branch;

[0061] a fourth isolating valve, arranged on the third branch;

[0062] The fifth isolating valve is arranged on the fourth branch.

[0063] Optionally, the main pipeline includes an intermediate pipeline; the valve assembly includes a tenth isolating valve, and the tenth isolating valve includes an openable and closable seventh connecting end, an openable and closable eighth connecting end, an openable and closable ninth connecting end, an openable and closable tenth connecting end and an intermediate connecting end;

[0064] The seventh connection end is connected to the first airbag; the eighth connection end is connected to the second airbag, the ninth connection end is connected to the third airbag, the tenth connection end is connected to the fourth airbag, and the middle connection end is connected to the middle pipeline.

[0065] Optionally, it also includes an air source, an intake valve, and an exhaust valve, one end of the intake pipeline is connected to the air source, the other end of the intake pipeline is connected to the main pipeline, the intake valve is arranged on the intake pipeline, and the exhaust valve is arranged on the exhaust pipeline.

[0066] In a second aspect, the present application further provides a vehicle, comprising the vehicle suspension as described in the first aspect.

[0067] When the vehicle encounters different road conditions, the left and right air paths of the front airbag assembly and / or the rear airbag assembly are connected to perform left-right linkage balancing to improve the stability of the vehicle during driving, which is beneficial to the safety of vehicle driving and the driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0069] Figure 1 Shown is a schematic diagram of an embodiment of a vehicle suspension of the present application.

[0070] Figure 2-5 Shown is a schematic diagram of the airbag connection state of the vehicle suspension of the present application.

[0071] Figure 6 Shown is a schematic diagram of another embodiment of the vehicle suspension of the present application.

[0072] Figure 7 Shown is a schematic diagram of yet another embodiment of the vehicle suspension of the present application.

[0073] Figure 8 Shown is a schematic diagram of yet another embodiment of the vehicle suspension of the present application.

[0074] Description of reference numerals:

[0075] Vehicle suspension 100; frame 110; first airbag 121; second airbag 122; third airbag 123; fourth airbag 124; intake pipe 131; intake valve 132; air source 133; exhaust pipe 134; exhaust valve 135; intermediate pipe 141; first branch 142; second branch 143; third branch 144; fourth branch 145; first front airbag branch 146; first rear airbag branch 147; second front airbag branch 148; second rear airbag branch 149; first isolation valve 151; second isolation valve 152; third isolation valve 153; fourth isolation valve 154; fifth isolation valve The shut-off valve 155; the sixth shut-off valve 161; the first connection end 1611; the second connection end 1612; the third connection end 1613; the seventh shut-off valve 162; the fourth connection end 1621; the fifth connection end 1622; the sixth connection end 1623; the eighth shut-off valve 171; the ninth shut-off valve 172; the tenth shut-off valve 181; the seventh connection end 1811; the eighth connection end 1812; the ninth connection end 1813; the tenth connection end 1814; the middle connection end 1815; the first sensor 191; the second sensor 192; the third sensor 193; the fourth sensor 194; the fifth sensor 195;

[0076] Front-to-back direction A. DETAILED DESCRIPTION

[0077] Here, the technical solutions in the embodiments (or "implementations") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0078] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0079] The vehicle suspension and the vehicle of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0080] The present application provides a vehicle suspension 100, including a frame 110, a front airbag assembly, a rear airbag assembly, an airflow pipeline and a valve assembly. The front airbag assembly includes a first airbag 121 and a second airbag 122, and the first airbag 121 and the second airbag 122 are arranged on both sides of the front end of the frame 110. The rear airbag assembly includes a third airbag 123 and a fourth airbag 124, and the third airbag 123 and the fourth airbag 124 are arranged on both sides of the rear end of the frame 110. The front-to-rear direction A of the frame 110 is the traveling direction of the vehicle. The airflow pipeline is connected to the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124 respectively, and is used to inlet or exhaust air to the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124. The valve assembly is disposed in the air flow pipeline to control the on-off between the first airbag 121 and the second airbag 122 , the on-off between the third airbag 123 and the fourth airbag 124 , and the on-off between the front airbag assembly and the rear airbag assembly.

[0081] Through the above arrangement, the first airbag 121 and the second airbag 122 of the front airbag assembly can be connected or disconnected with each other; the third airbag 123 and the fourth airbag 124 of the rear airbag assembly can be connected or disconnected with each other. When the first airbag 121 and the second airbag 122 are disconnected from each other, and the third airbag 123 and the fourth airbag 124 are disconnected from each other, the vehicle suspension 100 is in a four-point support mode, which is beneficial to improve the roll stiffness of the front and rear axle frame bodies 110 when driving at high speeds. When the first airbag 121 and the second airbag 122 are disconnected from each other, and the third airbag 123 and the fourth airbag 124 are connected with each other, a three-point positioning method with two front points and one rear point is formed, which can reduce the imbalance of the vehicle being suspended on one side in a twisted section, and is suitable for the vehicle being unloaded or lightly loaded. When the first airbag 121 and the second airbag 122 are interconnected, and the third airbag 123 and the fourth airbag 124 are disconnected from each other, the vehicle suspension 100 is in a three-point support mode with one point in front and two points in the back, which can reduce the imbalance of the whole vehicle on a twisted road section due to one-sided suspension, and is suitable for a heavy-loaded vehicle state. When the first airbag 121 and the second airbag 122 are interconnected, and the third airbag 123 and the fourth airbag 124 are interconnected, the vehicle suspension 100 is in a two-point support mode, and the left and right air paths of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkage balance can be achieved, which can reduce the imbalance of the whole vehicle on a twisted road section due to one-sided suspension. Through the above arrangement, when the vehicle is in a bad road condition, the left and right air paths of the front airbag assembly and / or the rear airbag assembly are connected, and the left and right linkage balance is performed to improve the stability of the vehicle during driving.

[0082] See also Figure 1 As shown, in an optional embodiment, the air flow pipeline includes a main pipeline, an air intake pipeline 131 and an exhaust pipeline 134. The main pipeline is connected to the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124 respectively. The air intake pipeline 131 is connected to the main pipeline for intake of air to the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124. The exhaust pipeline 134 is connected to the main pipeline for exhaust of air to the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124. The valve assembly is arranged in the main pipeline.

[0083] The valve assembly controls the main pipeline to communicate with any one of the first airbag 121, the second airbag 122, the third airbag 123 or the fourth airbag 124 at the same time, and the intake pipeline 131 can be used to intake air to any one of the first airbag 121, the second airbag 122, the third airbag 123 or the fourth airbag 124, and the exhaust pipeline 134 can be used to exhaust air to any one of the first airbag 121, the second airbag 122, the third airbag 123 or the fourth airbag 124. The above arrangement is conducive to simplifying the arrangement structure of the airflow pipeline, simplifying the arrangement structure of the vehicle suspension 100, and facilitating the manufacture of the vehicle suspension 100.

[0084] See also Figure 1 As shown, in an optional embodiment, the main pipeline includes an intermediate pipeline 141, a first branch 142, a second branch 143, a third branch 144 and a fourth branch 145. The first branch 142 connects the first airbag 121 with the intermediate pipeline 141. The second branch 143 connects the second airbag 122 with the intermediate pipeline 141. The third branch 144 connects the third airbag 123 with the intermediate pipeline 141. The fourth branch 145 connects the fourth airbag 124 with the intermediate pipeline 141. Among them, the intake pipeline 131 and the exhaust pipeline 134 are connected to the intermediate pipeline 141.

[0085] The valve assembly includes a first isolation valve 151, a second isolation valve 152, a third isolation valve 153, a fourth isolation valve 154 and a fifth isolation valve 155. The first isolation valve 151 is arranged in the middle pipeline 141; the second isolation valve 152 is arranged in the first branch 142; the third isolation valve 153 is arranged in the second branch 143; the fourth isolation valve 154 is arranged in the third branch 144; and the fifth isolation valve 155 is arranged in the fourth branch 145. When the first isolation valve 151 is closed, the front airbag assembly is disconnected from the rear airbag assembly; when the first isolation valve 151 is opened, the front airbag assembly is connected to the rear airbag assembly. Among them, when the front airbag assembly, the rear airbag assembly, and the connection positions of the air intake line 131, the exhaust line 134 and the main line are set in sequence, the first isolation valve 151 is opened, the front airbag assembly is connected with the rear airbag assembly, so that the air intake line 131 and the exhaust line 134 can be used to intake and exhaust the first airbag 121 and / or the second airbag 122 of the front airbag assembly. Correspondingly, when the rear airbag assembly, the front airbag assembly, and the connection positions of the air intake line 131, the exhaust line 134 and the main line are set in sequence, the first isolation valve 151 is opened, the front airbag assembly is connected with the rear airbag assembly, so that the air intake line 131 and the exhaust line 134 can be used to intake and exhaust the third airbag 123 and / or the fourth airbag 124 of the rear airbag assembly. The second isolation valve 152 and the third isolation valve 153 are both opened, and the first airbag 121 and the second airbag 122 are connected. If either the second isolation valve 152 or the third isolation valve 153 is disconnected, the first airbag 121 and the second airbag 122 are disconnected. If the fourth isolation valve 154 or the fifth isolation valve 155 is opened, the third airbag 123 and the fourth airbag 124 are connected; if either the fourth isolation valve 154 or the fifth isolation valve 155 is disconnected, the third airbag 123 and the fourth airbag 124 are disconnected. In this embodiment, the first isolation valve 151, the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154 and the fifth isolation valve 155 are all on-off valves, which can be valves with on-off control functions such as pilot solenoid valves. The first cut-off valve 151, the second cut-off valve 152, the third cut-off valve 153, the fourth cut-off valve 154 and the fifth cut-off valve 155 are electrically connected to the controller of the vehicle suspension 100 to control the switching between the connected and disconnected states, thereby controlling the connection and disconnection between the first airbag 121 and the second airbag 122, the connection and disconnection between the third airbag 123 and the fourth airbag 124, and the connection and disconnection between the front airbag assembly and the rear airbag assembly. The first cut-off valve 151, the second cut-off valve 152, the third cut-off valve 153, the fourth cut-off valve 154 and the fifth cut-off valve 155 switch between the connected and disconnected states, which is convenient for control and simplifies the control method of the vehicle suspension 100.

[0086] See also Figure 1As shown, in an optional embodiment, the vehicle suspension 100 includes a first sensor 191, a second sensor 192, a third sensor 193, a fourth sensor 194 and a fifth sensor 195. The first sensor 191 is arranged in the intake pipe 131. The second sensor 192 is arranged in the first branch 142, specifically between the first airbag 121 and the second isolation valve 152. The third sensor 193 is arranged in the second branch 143, specifically between the second airbag 122 and the third isolation valve 153. The fourth sensor 194 is arranged in the third branch 144, specifically between the third airbag 123 and the fourth isolation valve 154. The fifth sensor 195 is arranged in the fourth branch 145, specifically between the fourth airbag 124 and the fifth isolation valve 155. The first sensor 191, the second sensor 192, the third sensor 193, the fourth sensor 194 and the fifth sensor 195 are respectively used to measure the gas pressure when the intake pipe 131 is inhaled, the gas pressure in the first airbag 121, the gas pressure in the second airbag 122, the gas pressure in the third airbag 123 and the gas pressure in the fourth airbag 124. Specifically, the first sensor 191, the second sensor 192, the third sensor 193, the fourth sensor 194 and the fifth sensor 195 are electrically connected to the controller of the vehicle suspension 100, and the controller of the vehicle suspension 100 obtains the gas pressure information when the intake pipe 131 is inhaled, the gas pressure information in the first airbag 121, the gas pressure information in the second airbag 122, the gas pressure information in the third airbag 123 and the gas pressure information in the fourth airbag 124, which is conducive to accurately adjusting the gas pressure of the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124, and improving the stability of the vehicle during driving.

[0087] In an alternative embodiment, the vehicle suspension 100 may also be provided with a pressure sensor at the connection position of the first branch 142, the second branch 143 and the intermediate pipeline 141 to measure the gas pressure in the front airbag assembly. When the first isolation valve 151, the third isolation valve 153, the fourth isolation valve 154 and the fifth isolation valve 155 are closed and the second isolation valve 152 is opened, the pressure sensor measures the gas pressure in the first airbag 121; when the first isolation valve 151, the second isolation valve 152, the fourth isolation valve 154 and the fifth isolation valve 155 are closed and the third isolation valve 153 is opened, the pressure sensor measures the gas pressure in the second airbag 122; when the first isolation valve 151, the second isolation valve 152, the third isolation valve 153 and the fifth isolation valve 155 are closed and the third isolation valve 153 is opened, the pressure sensor measures the gas pressure in the second airbag 122. When the first isolation valve 151, the second isolation valve 152, the third isolation valve 153 and the fourth isolation valve 154 are closed and the fifth isolation valve 155 is opened, the pressure sensor measures the gas pressure in the fourth airbag 124; when the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154 and the fifth isolation valve 155 are closed and the first isolation valve 151 is opened, the pressure sensor measures the gas pressure in the intake pipe 131. Through the above arrangement, the manufacturing cost of the vehicle suspension 100 is reduced.

[0088] In this embodiment, when in use, the front airbag assembly, the rear airbag assembly, and the connection positions of the air intake pipeline 131, the exhaust pipeline 134 and the main pipeline are arranged in sequence, the first isolation valve 151 is opened, the front airbag assembly is connected with the rear airbag assembly, so that the air intake pipeline 131 and the exhaust pipeline 134 can intake and exhaust the first airbag 121 and / or the second airbag 122 of the front airbag assembly. Figure 2 As shown, when the first isolation valve 151, the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154 and the fifth isolation valve 155 are all disconnected, the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124 are independent of each other, and the vehicle suspension 100 is in a four-point support mode, which is beneficial to improve the roll stiffness of the front and rear axle frames 110 when driving at high speed. Figure 3 As shown, when the first isolation valve 151, the fourth isolation valve 154 and the fifth isolation valve 155 are disconnected, the second isolation valve 152 and the third isolation valve 153 are connected, the first airbag 121 and the second airbag 122 are connected, and the third airbag 123 and the fourth airbag 124 are disconnected, the vehicle suspension 100 is in a three-point support mode with one point in front and two points in the back, which can reduce the imbalance of the vehicle being suspended on one side in a twisted road section, and is suitable for the state of a heavy-loaded vehicle. Figure 4As shown, when the first isolation valve 151, the second isolation valve 152 and the third isolation valve 153 are disconnected, and the fourth isolation valve 154 and the fifth isolation valve 155 are connected, the first airbag 121 and the second airbag 122 are disconnected from each other, and the third airbag 123 and the fourth airbag 124 are connected to each other, the vehicle suspension 100 is in a three-point positioning mode with two points in front and one point in the back, which can reduce the unbalanced suspension of one side of the vehicle in a twisted road section, and is suitable for the vehicle to be unloaded or lightly loaded. Figure 5 As shown, when the first isolating valve 151 is disconnected and the second isolating valve 152, the third isolating valve 153, the fourth isolating valve 154 and the fifth isolating valve 155 are connected, the first airbag 121 and the second airbag 122 are connected to each other, the third airbag 123 and the fourth airbag 124 are connected to each other, the vehicle suspension 100 is in a two-point support mode, the left and right air paths of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkages are balanced, which can reduce the imbalance of the vehicle due to unilateral suspension in twisted sections.

[0089] See also Figure 6 As shown, in an optional embodiment, the main pipeline includes an intermediate pipeline 141, a first front airbag branch 146 and a first rear airbag branch 147. The first front airbag branch 146 is connected to the intermediate pipeline 141. One end of the first front airbag branch 146 is connected to the first airbag 121, and the other end of the first front airbag branch 146 is connected to the second airbag 122. The first rear airbag branch 147 is connected to the intermediate pipeline 141. One end of the first rear airbag branch 147 is connected to the third airbag 123, and the other end of the first rear airbag branch 147 is connected to the fourth airbag 124.

[0090] The valve assembly includes a sixth isolating valve 161 and a seventh isolating valve 162. The sixth isolating valve 161 is disposed at the connection between the first front airbag branch 146 and the intermediate pipeline 141. The sixth isolating valve 161 includes a first connection end 1611 that can be opened and closed, a second connection end 1612 that can be opened and closed, and a third connection end 1613 that can be opened and closed. The first connection end 1611 is connected to the intermediate pipeline 141, the second connection end 1612 is connected to the first airbag 121, and the third connection end 1613 is connected to the second airbag 122. The seventh isolating valve 162 is disposed at the connection between the first rear airbag branch 147 and the intermediate pipeline 141. The seventh isolating valve 162 includes a fourth connection end 1621 that can be opened and closed, a fifth connection end 1622 that can be opened and closed, and a sixth connection end 1623 that can be opened and closed. The fourth connection end 1621 is connected to the middle pipeline 141 , the fifth connection end 1622 is connected to the third airbag 123 , and the sixth connection end 1623 is connected to the fourth airbag 124 .

[0091] When the second connection end 1612 is connected to the third connection end 1613, the first airbag 121 is connected to the second airbag 122; when the second connection end 1612 is disconnected from the third connection end 1613, the first airbag 121 is disconnected from the second airbag 122. When the fifth connection end 1622 is connected to the sixth connection end 1623, the third airbag 123 is connected to the fourth airbag 124; when the fifth connection end 1622 is disconnected from the sixth connection end 1623, the third airbag 123 is disconnected from the fourth airbag 124.

[0092] In specific use, the air intake pipeline 131 and the exhaust pipeline 134 are connected to the intermediate pipeline 141. When the first connection end 1611 and the second connection end 1612 are opened, and the third connection end 1613 and the fourth connection end 1621 are closed, air can be taken in or exhausted to the first airbag 121; when the first connection end 1611 and the third connection end 1613 are opened, and the second connection end 1612 and the fourth connection end 1621 are closed, air can be taken in or exhausted to the second airbag 122. When the fourth connection end 1621 and the fifth connection end 1622 are opened, and the sixth connection end 1623 and the first connection end 1611 are closed, air can be taken in or exhausted to the third airbag 123. When the fourth connection end 1621 and the sixth connection end 1623 are opened, and the fifth connection end 1622 and the first connection end 1611 are closed, air can be taken in or exhausted to the fourth airbag 124. When the second connection end 1612, the third connection end 1613, the fifth connection end 1622 and the sixth connection end 1623 are all disconnected, the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124 are independent of each other, and the vehicle suspension 100 is in a four-point support mode, which is conducive to improving the roll stiffness of the front and rear axle frame bodies 110 when driving at high speed. When the second connection end 1612 and the third connection end 1613 are opened, the first connection end 1611, the fifth connection end 1622 and the sixth connection end 1623 are closed, the first airbag 121 and the second airbag 122 are connected to each other, and the third airbag 123 and the fourth airbag 124 are disconnected from each other, the vehicle suspension 100 is in a three-point support mode with one point in front and two points in the back, which can reduce the imbalance of the whole vehicle being suspended on one side in a twisted section, and is suitable for the state of a heavy-loaded vehicle. When the fifth connection end 1622 and the sixth connection end 1623 are opened and the fourth connection end 1621, the second connection end 1612 and the third connection end 1613 are closed, the first airbag 121 and the second airbag 122 are disconnected from each other, and the third airbag 123 and the fourth airbag 124 are connected to each other. The vehicle suspension 100 is in a three-point positioning method with two points in front and one point in the back, which can reduce the imbalance of one-sided suspension of the vehicle on twisted roads, and is suitable for vehicles with no load or light load. When the first connection end 1611 and the fourth connection end 1621 are closed and the second connection end 1612, the third connection end 1613, the fifth connection end 1622 and the sixth connection end 1623 are opened, the first airbag 121 and the second airbag 122 are connected to each other, the third airbag 123 and the fourth airbag 124 are connected to each other, the vehicle suspension 100 is in a two-point support mode, the left and right air paths of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkages are balanced, which can reduce the imbalance of the vehicle due to unilateral suspension in twisted sections.

[0093] See also Figure 7 and Figure 8As shown, in an optional embodiment, the vehicle suspension 100 includes a second front airbag branch 148 and a second rear airbag branch 149. One end of the second front airbag branch 148 is connected to the first airbag 121, and the other end of the second front airbag branch 148 is connected to the second airbag 122. The second rear airbag branch 149, one end of the second rear airbag branch 149 is connected to the third airbag 123, and the other end of the second rear airbag branch 149 is connected to the fourth airbag 124.

[0094] The valve assembly includes an eighth isolating valve 171 and a ninth isolating valve 172. The eighth isolating valve 171 is disposed in the second front airbag branch 148. When the eighth isolating valve 171 is closed, the first airbag 121 is disconnected from the second airbag 122; when the eighth isolating valve 171 is opened, the first airbag 121 is connected to the second airbag 122. The ninth isolating valve 172 is disposed in the second rear airbag branch 149. When the ninth isolating valve 172 is closed, the third airbag 123 is disconnected from the fourth airbag 124; when the ninth isolating valve 172 is opened, the third airbag 123 is connected to the fourth airbag 124.

[0095] Through the above arrangement, the connection and disconnection of the second front airbag branch 148 and the second rear airbag branch 149 are controlled by connecting or disconnecting the eighth isolation valve 171 and the ninth isolation valve 172. The eighth isolation valve 171 and the ninth isolation valve 172 are on-off valves, which can be pilot solenoid valves and other valves with on-off control functions. Through the above arrangement, when the vehicle is in bad road conditions, the left and right air paths of the front airbag assembly and / or the rear airbag assembly are connected to perform left-right linkage balance, thereby improving the stability of the vehicle during driving.

[0096] See also Figure 7 As shown, in an optional embodiment, the main pipeline includes: an intermediate pipeline 141, a first branch 142, a second branch 143, a third branch 144 and a fourth branch 145. The first branch 142 connects the first airbag 121 with the intermediate pipeline 141; the second branch 143 connects the second airbag 122 with the intermediate pipeline 141; the third branch 144 connects the third airbag 123 with the intermediate pipeline 141; the fourth branch 145 connects the fourth airbag 124 with the intermediate pipeline 141.

[0097] The valve assembly includes a second isolation valve 152, a third isolation valve 153, a fourth isolation valve 154 and a fifth isolation valve 155. The second isolation valve 152 is disposed in the first branch 142; the third isolation valve 153 is disposed in the second branch 143; the fourth isolation valve 154 is disposed in the third branch 144; and the fifth isolation valve 155 is disposed in the fourth branch 145.

[0098] In specific use, the air intake pipeline 131 and the exhaust pipeline 134 are connected to the intermediate pipeline 141. When the second isolation valve 152 is opened, and the third isolation valve 153, the fourth isolation valve 154, the fifth isolation valve 155, the eighth isolation valve 171 and the ninth isolation valve 172 are all closed, the first airbag 121 can be inlet or exhaust. When the third isolation valve 153 is opened, the second isolation valve 152, the fourth isolation valve 154, the fifth isolation valve 155, the eighth isolation valve 171 and the ninth isolation valve 172 are all closed, the second airbag 122 can be inlet or exhaust. When the fourth isolation valve 154 is opened, the second isolation valve 152, the third isolation valve 153, the fifth isolation valve 155, the eighth isolation valve 171 and the ninth isolation valve 172 are all closed, the third airbag 123 can be inlet or exhaust. When the fifth isolation valve 155 is opened, and the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, the eighth isolation valve 171 and the ninth isolation valve 172 are all closed, air can be introduced into or exhausted from the fourth airbag 124. When the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, the fifth isolation valve 155, the eighth isolation valve 171 and the ninth isolation valve 172 are all disconnected, the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124 are independent of each other, and the vehicle suspension 100 is in a four-point support mode, which is beneficial to improving the roll stiffness of the front and rear axle frames 110 during high-speed driving. When the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, the fifth isolation valve 155 and the ninth isolation valve 172 are disconnected, and the eighth isolation valve 171 is opened, the first airbag 121 and the second airbag 122 are interconnected, the third airbag 123 and the fourth airbag 124 are disconnected, and the vehicle suspension 100 is in a three-point support mode with one point in front and two points in the back, which can reduce the unbalanced suspension of the whole vehicle on the twisted road section, and is suitable for the state of heavy load of the vehicle. When the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, the fifth isolation valve 155 and the eighth isolation valve 171 are disconnected, and the ninth isolation valve 172 is opened, the first airbag 121 and the second airbag 122 are disconnected, and the third airbag 123 and the fourth airbag 124 are interconnected, forming a three-point positioning mode with two points in front and one point in the back, which can reduce the unbalanced suspension of the whole vehicle on the twisted road section, and is suitable for the state of no-load or light-load of the vehicle. When the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154 and the fifth isolation valve 155 are disconnected and the eighth isolation valve 171 and the ninth isolation valve 172 are opened, the first airbag 121 and the second airbag 122 are interconnected, the third airbag 123 and the fourth airbag 124 are interconnected, the vehicle suspension 100 is in a two-point support mode, the left and right air paths of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkages are balanced, which can reduce the imbalance of the vehicle due to unilateral suspension in twisted sections.

[0099] See also Figure 8As shown, in an optional embodiment, the main pipeline includes an intermediate pipeline 141. The valve assembly includes a tenth isolation valve 181, and the tenth isolation valve 181 includes a seventh connection end 1811 that can be opened and closed, an eighth connection end 1812 that can be opened and closed, a ninth connection end 1813 that can be opened and closed, a tenth connection end 1814 that can be opened and closed, and an intermediate connection end 1815. The intermediate connection end 1815 is connected to the seventh connection end 1811, the eighth connection end 1812, the ninth connection end 1813, and the tenth connection end 1814, respectively. The seventh connection end 1811 is connected to the first airbag 121; the eighth connection end 1812 is connected to the second airbag 122, the ninth connection end 1813 is connected to the third airbag 123, the tenth connection end 1814 is connected to the fourth airbag 124, and the intermediate connection end 1815 is connected to the intermediate pipeline 141.

[0100] In specific use, the air intake pipeline 131 and the exhaust pipeline 134 are connected to the intermediate pipeline 141. When the intermediate connection end 1815 and the seventh connection end 1811 are opened, and the eighth connection end 1812, the ninth connection end 1813 and the tenth connection end 1814 are closed, air can be taken in or exhausted to the first airbag 121. When the intermediate connection end 1815 and the eighth connection end 1812 are opened, and the seventh connection end 1811, the ninth connection end 1813 and the tenth connection end 1814 are closed, air can be taken in or exhausted to the second airbag 122. When the intermediate connection end 1815 and the ninth connection end 1813 are opened, and the seventh connection end 1811, the eighth connection end 1812 and the tenth connection end 1814 are closed, air can be taken in or exhausted to the third airbag 123. When the middle connection end 1815 and the tenth connection end 1814 are opened, and the seventh connection end 1811, the eighth connection end 1812, and the ninth connection end 1813 are closed, air can be introduced into or exhausted from the fourth airbag 124. When the seventh connection end 1811, the eighth connection end 1812, the ninth connection end 1813, and the tenth connection end 1814 are closed, and the eighth isolation valve 171 and the ninth isolation valve 172 are closed, the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124 are independent of each other, and the vehicle suspension 100 is in a four-point support mode, which is beneficial to improving the roll stiffness of the front and rear axle frame bodies 110 during high-speed driving. When the seventh connection end 1811, the eighth connection end 1812, the ninth connection end 1813 and the tenth connection end 1814 are closed, the eighth isolation valve 171 is opened, and the ninth isolation valve 172 is closed, the first airbag 121 and the second airbag 122 are connected to each other, the third airbag 123 and the fourth airbag 124 are disconnected from each other, and the vehicle suspension 100 is in a three-point support mode with one point in front and two points in the back, which can reduce the unbalanced suspension of the whole vehicle on the twisted road section, and is suitable for the state of heavy load of the vehicle. When the seventh connection end 1811, the eighth connection end 1812, the ninth connection end 1813 and the tenth connection end 1814 are closed, the eighth isolation valve 171 is closed, and the ninth isolation valve 172 is opened, the first airbag 121 and the second airbag 122 are disconnected from each other, and the third airbag 123 and the fourth airbag 124 are connected to each other, forming a three-point positioning mode with two points in front and one point in the back, which can reduce the unbalanced suspension of the whole vehicle on the twisted road section, and is suitable for the state of no-load or light-load of the vehicle. When the seventh connection end 1811, the eighth connection end 1812, the ninth connection end 1813 and the tenth connection end 1814 are closed and the eighth isolating valve 171 and the ninth isolating valve 172 are opened, the first airbag 121 and the second airbag 122 are interconnected, the third airbag 123 and the fourth airbag 124 are interconnected, the vehicle suspension 100 is in a two-point support mode, the left and right air paths of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkages are balanced, which can reduce the imbalance of the vehicle due to unilateral suspension in twisted sections.

[0101] See also Figure 1 and Figure 6-8As shown, in an optional embodiment, it also includes a gas source 133, an intake valve 132, and an exhaust valve 135. One end of the intake pipeline 131 is connected to the gas source 133, and the other end of the intake pipeline 131 is connected to the main pipeline. The intake valve 132 is arranged on the intake pipeline 131, and the corresponding exhaust valve 135 is arranged on the exhaust pipeline 134.

[0102] When the air intake valve 132 is opened, the air intake pipeline 131 is connected to the air source 133 and the main pipeline, and air can be taken into the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124; when the exhaust valve 135 is opened, the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124 can be exhausted. The above arrangement is conducive to simplifying the arrangement structure of the airflow pipeline, simplifying the arrangement structure of the vehicle suspension 100, and facilitating the manufacture of the vehicle suspension 100.

[0103] The present application also provides a vehicle, which includes the above-mentioned vehicle suspension 100 .

[0104] When the vehicle encounters different road conditions, the left and right air paths of the front airbag assembly and / or the rear airbag assembly are connected to perform left-right linkage balancing to improve the stability of the vehicle during driving, which is beneficial to the safety of vehicle driving and the driving experience.

[0105] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A vehicle suspension, characterized in that: include: Frame; A front airbag assembly, comprising a first airbag and a second airbag, wherein the first airbag and the second airbag are arranged on both sides of the front end of the frame; A rear airbag assembly, comprising a third airbag and a fourth airbag, wherein the third airbag and the fourth airbag are arranged on both sides of the rear end of the frame; an airflow pipeline, connected to the first airbag, the second airbag, the third airbag and the fourth airbag, respectively, and used for supplying air to or exhausting air to the first airbag, the second airbag, the third airbag and the fourth airbag; The valve assembly is arranged in the air flow pipeline, and is used to control the on-off between the first airbag and the second airbag, the on-off between the third airbag and the fourth airbag, and the on-off between the front airbag assembly and the rear airbag assembly.

2. The vehicle suspension according to claim 1, characterized in that The air flow circuit includes: a main pipeline, the main pipeline being connected to the first airbag, the second airbag, the third airbag and the fourth airbag respectively; an air intake pipeline, connected to the main pipeline, and used for supplying air to the first airbag, the second airbag, the third airbag, and the fourth airbag; an exhaust pipeline, connected to the main pipeline, and used for exhausting air to the first airbag, the second airbag, the third airbag, and the fourth airbag; The valve assembly is arranged on the main pipeline.

3. The vehicle suspension according to claim 2, characterized in that: The main pipeline includes: Intermediate pipeline; a first branch connecting the first airbag and the intermediate pipeline; a second branch connecting the second airbag and the intermediate pipeline; a third branch connecting the third airbag and the intermediate pipeline; a fourth branch connecting the fourth airbag and the intermediate pipeline; The valve assembly includes: A first isolating valve, disposed in the intermediate pipeline; a second isolation valve, disposed on the first branch; a third isolation valve, disposed on the second branch; a fourth isolating valve, arranged on the third branch; a fifth isolating valve, arranged on the fourth branch; When the first isolation valve is closed, the front airbag assembly is disconnected from the rear airbag assembly; when the first isolation valve is opened, the front airbag assembly is connected to the rear airbag assembly; The second isolation valve and the third isolation valve are both opened, and the first airbag is connected to the second airbag; if either the second isolation valve or the third isolation valve is disconnected, the first airbag and the second airbag are disconnected; When the fourth isolation valve and the fifth isolation valve are both opened, the third airbag is connected to the fourth airbag; when either the fourth isolation valve or the fifth isolation valve is disconnected, the third airbag is disconnected from the fourth airbag.

4. The vehicle suspension according to claim 3, characterized in that include: A first sensor is arranged in the air intake pipeline; A second sensor is arranged on the first branch; a third sensor, disposed on the second branch; a fourth sensor, arranged on the third branch; a fifth sensor, arranged on the fourth branch; The first sensor includes a pressure sensor; the second sensor includes a pressure sensor; the third sensor includes a pressure sensor; the fourth sensor includes a pressure sensor; and the fifth sensor includes a pressure sensor.

5. The vehicle suspension according to claim 2, characterized in that: The main pipeline includes: Intermediate pipeline; a first front airbag branch connected to the intermediate pipeline, one end of the first front airbag branch being connected to the first airbag, and the other end of the first front airbag branch being connected to the second airbag; a first rear airbag branch connected to the intermediate pipeline, one end of the first rear airbag branch connected to the third airbag, and the other end of the first rear airbag branch connected to the fourth airbag; The valve assembly comprises: a sixth isolating valve, arranged at the connection between the first front airbag branch and the intermediate pipeline; the sixth isolating valve comprises a first connection end that can be opened and closed, a second connection end that can be opened and closed, and a third connection end that can be opened and closed; the first connection end is connected to the intermediate pipeline, the second connection end is connected to the first airbag, and the third connection end is connected to the second airbag; a seventh isolating valve, arranged at the connection between the first rear airbag branch and the intermediate pipeline; the seventh isolating valve comprises an openable and closable fourth connecting end, an openable and closable fifth connecting end and an openable and closable sixth connecting end, the fourth connecting end is connected to the intermediate pipeline, the fifth connecting end is connected to the third airbag, and the sixth connecting end is connected to the fourth airbag; When the second connection end is connected to the third connection end, the first airbag is connected to the second airbag; when the second connection end is disconnected from the third connection end, the first airbag is disconnected from the second airbag; When the fifth connection end is connected to the sixth connection end, the third airbag is connected to the fourth airbag; when the fifth connection end is disconnected from the sixth connection end, the third airbag is disconnected from the fourth airbag.

6. The vehicle suspension according to claim 2, characterized in that: include: a second front airbag branch, one end of the second front airbag branch being connected to the first airbag, and the other end of the second front airbag branch being connected to the second airbag; a second rear airbag branch, one end of the second rear airbag branch being connected to the third airbag, and the other end of the second rear airbag branch being connected to the fourth airbag; The valve assembly includes: an eighth isolating valve, arranged in the second front airbag branch; when the eighth isolating valve is closed, the first airbag is disconnected from the second airbag; when the eighth isolating valve is opened, the first airbag is connected to the second airbag; A ninth isolating valve is arranged in the second rear airbag branch; when the ninth isolating valve is closed, the third airbag is disconnected from the fourth airbag; when the ninth isolating valve is opened, the third airbag is connected to the fourth airbag.

7. The vehicle suspension according to claim 6, characterized in that The main pipeline includes: Intermediate pipeline; a first branch connecting the first airbag and the intermediate pipeline; a second branch connecting the second airbag and the intermediate pipeline; a third branch connecting the third airbag and the intermediate pipeline; a fourth branch connecting the fourth airbag and the intermediate pipeline; The valve assembly includes: a second isolation valve, disposed on the first branch; a third isolation valve, disposed on the second branch; a fourth isolating valve, arranged on the third branch; The fifth isolating valve is arranged on the fourth branch.

8. The vehicle suspension according to claim 6, characterized in that The main pipeline includes an intermediate pipeline; the valve assembly includes a tenth isolating valve, and the tenth isolating valve includes an openable and closable seventh connecting end, an openable and closable eighth connecting end, an openable and closable ninth connecting end, an openable and closable tenth connecting end and an intermediate connecting end; The seventh connection end is connected to the first airbag; the eighth connection end is connected to the second airbag, the ninth connection end is connected to the third airbag, the tenth connection end is connected to the fourth airbag, and the middle connection end is connected to the middle pipeline.

9. The vehicle suspension according to claim 2, characterized in that: It also includes an air source, an intake valve, and an exhaust valve. One end of the intake pipeline is connected to the air source, and the other end of the intake pipeline is connected to the main pipeline. The intake valve is arranged on the intake pipeline, and the exhaust valve is arranged on the exhaust pipeline.

10. A vehicle, characterized in that: The vehicle comprises a vehicle suspension according to any one of claims 1-9.

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