Novel hydraulic interconnection new energy vehicle suspension

Abstract

The utility model discloses a novel hydraulic interconnection new energy vehicle suspension which comprises a sprung mass and two hydraulic inerter suspension component sets, the two hydraulic inerter suspension component sets are arranged at the bottom ends of the two sides of the sprung mass in a bilateral symmetry mode and connected with the sprung mass in a hinged mode, and the sprung mass is connected with the hydraulic inerter suspension component sets in a hinged mode. An interconnection pipe is arranged between the two hydraulic inerter suspension component sets, the two hydraulic inerter suspension component sets are connected with the interconnection pipe, a valve is arranged in the middle of the interconnection pipe and used for adjusting the liquid exchange amount between the two liquid inerter suspensions, and rubber films are arranged in the hydraulic inerter suspension component sets. The fluid inerter has the advantages that the integration of the rubber membrane and the fluid inerter is utilized, the embedded cubic rigidity of the fluid inerter is achieved, the purpose of broadband vibration reduction of a suspension can be achieved through the rubber membrane, and the stability of an automobile is better improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile vibration reduction, in particular to a novel hydraulic interconnected new energy vehicle suspension. Background Art

[0002] In recent years, the development of new energy vehicles in my country has been getting faster and faster, and the penetration rate has been getting higher and higher; however, at present, people have an increasingly high demand for the endurance of new energy vehicles. Under the condition of meeting the endurance, the existing new energy batteries are too large in size, which leads to a shortage of space inside the vehicle. The excessive weight leads to changes in the weight and center of gravity of the vehicle, which in turn affects the stability and operability of the vehicle. In addition, pure electric new energy vehicles are heavier than traditional fuel vehicles, so the suspension performance requirements are higher. Therefore, it is increasingly important to develop a lightweight automobile vibration-damping suspension that can significantly improve the driving stability of the vehicle. The existing hydraulic suspension technology has the following problems: when the road conditions change, the hydraulic suspension needs a certain amount of time to adjust the stroke, resulting in insufficient feedback time for the driver, resulting in poor operating performance and a generally complex structure, which cannot meet people's current needs;

[0003] In view of the above situation, it is necessary to improve the existing hydraulic suspension so that it can meet the current needs of people for the stability of vehicle use. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and designs a new type of hydraulic interconnected new energy vehicle suspension.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is a new type of hydraulic interconnected new energy vehicle suspension, including a sprung mass and a hydraulic inertia suspension component group, wherein two hydraulic inertia suspension component groups are provided and are symmetrically arranged at the bottom ends of both sides of the sprung mass, the hydraulic inertia suspension component group is hinged to the sprung mass, an interconnection pipe is provided between the two hydraulic inertia suspension component groups and the two are respectively connected to the interconnection pipe, a valve is provided in the middle position of the interconnection pipe for adjusting the liquid exchange amount between the two liquid inertia suspensions, and a rubber membrane is provided in the hydraulic inertia suspension component group.

[0006] As a further supplement to the present technical solution, the hydraulic inertial suspension component group includes an outer shell, a corrugated rubber tube arranged below the outer shell, a cylinder body arranged in the outer shell and the corrugated rubber tube, a spiral tube arranged outside the cylinder body, a piston rod arranged in the cylinder body, a suspension spring arranged outside the piston rod and located below the cylinder body, a connecting rod arranged below the piston rod, a three-way valve arranged on the cylinder body and above the piston rod, and a right-angle connecting valve arranged on the cylinder body and below the piston. The hydraulic inertial suspension component groups on both sides are respectively connected to the interconnecting pipes through the three-way valves, the rubber membrane is arranged above the cylinder body and in the outer shell, one end of the spiral tube is connected to the three-way valve, and the other end of the spiral tube is connected to the right-angle connecting valve, one end of the suspension spring is fixedly connected to the connecting rod, and the other end of the suspension spring is fixedly connected to the cylinder body, one end of the piston rod can be slidably installed in the cylinder body, and the other end of the piston rod is fixedly connected to the connecting rod.

[0007] As a further supplement to the technical solution, a fixing block is provided above the rubber membrane, the fixing block is hollow and one end of the fixing block is connected to the rubber membrane, and the other end of the fixing block protrudes out of the outer shell surface and is hinged to the sprung mass.

[0008] As a further supplement to the technical solution, the movable range of the piston rod is limited between the three-way valve and the right-angle connection valve.

[0009] As a further supplement to the technical solution, the spiral tube adopts a PU air compressor hose.

[0010] Its beneficial effects are: (1) by utilizing the integration of rubber membrane and fluid inertia, cubic stiffness is embedded in the fluid inertia. The use of rubber membrane can enable the suspension to achieve the purpose of wide-band vibration reduction, thereby better improving the stability of the vehicle; (2) by adopting the connection method of interconnecting the left and right hydraulic inertia suspension component groups, when encountering a curve with harsh working conditions, the pressure in the two liquid cylinders is quickly balanced through the liquid compensation flow between the left and right liquid cylinders, thereby reducing the difference in the left and right suspension strokes and increasing the grip of the tire on the ground, effectively improving the vehicle's anti-roll performance, ride comfort and maneuverability; (3) the structure is simple, easy to produce, and convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall installation structure of the utility model;

[0012] Figure 2 It is a three-dimensional diagram of the hydraulic inertia suspension component group of the utility model;

[0013] Figure 3 It is a cross-sectional view of the hydraulic inertia suspension component group of the utility model;

[0014] Figure 4 It is a structural schematic diagram of the hydraulic inertia suspension component group of the utility model without the housing and the corrugated rubber tube installed;

[0015] In the figure, 1. sprung mass; 2. hydraulic inertia suspension component group; 21. housing; 22. corrugated rubber tube; 23. cylinder block; 24. spiral tube; 25. piston rod; 26. suspension spring; 27. connecting rod; 28. three-way valve; 29. ​​right-angle connecting valve; 20. fixing block; 3. interconnecting pipe; 4. valve; 5. rubber membrane. DETAILED DESCRIPTION

[0016] In order to make the technical solution more clear to those skilled in the art, Figure 1-4 Explain the specific structure and principle of each of the above institutions:

[0017] A new type of hydraulic interconnected new energy vehicle suspension, including a sprung mass 1, a hydraulic inertia suspension component group 2, wherein the hydraulic inertia suspension component group 2 is provided with two components and is symmetrically arranged at the bottom ends of both sides of the sprung mass 1, the hydraulic inertia suspension component group 2 is hingedly connected to the sprung mass 1, an interconnection pipe 3 is provided between the two hydraulic inertia suspension component groups 2, and both are respectively connected to the interconnection pipe 3, a valve 4 is provided in the middle position of the interconnection pipe 3 for adjusting the liquid exchange amount between the two liquid inertia suspensions, and the switch of the valve 4 is controlled by an electronic control unit, and a display screen is located in the cab, which is convenient for the driver to observe and Control the operation of the hydraulic inertial suspension component group 2, and freely choose whether liquid interconnection is needed according to the road conditions; the hydraulic inertial suspension component group 2 is provided with a rubber membrane 5, and the rubber membrane 5 is made of nitrile rubber, which has good air tightness and water resistance, and can effectively prevent leakage when elastic deformation occurs, and has the characteristics of strong wear resistance and high fatigue resistance, and a longer service life; the lower end of the hydraulic inertial suspension component group 2 is hinged to the unsprung mass, the unsprung mass is connected to the equivalent spring, and the tire equivalent stiffness is simplified to an equivalent spring for connecting the unsprung mass and the road surface.

[0018] The structure of the hydraulic inertial suspension component group 2 will be described in detail below. The hydraulic inertial suspension component group 2 includes an outer shell 21, a corrugated rubber tube 22 arranged below the outer shell 21, a cylinder body 23 arranged in the outer shell 21 and the corrugated rubber tube 22, a spiral tube 24 arranged on the outside of the cylinder body 23, a piston rod 25 arranged in the cylinder body 23, a suspension spring 26 arranged on the outside of the piston rod 25 and located below the cylinder body 23, a connecting rod 27 arranged below the piston rod 25, a three-way valve 28 arranged on the cylinder body 23 and above the piston rod 25, and a right-angle connecting valve 29 arranged on the cylinder body 23 and below the piston. The hydraulic inertial suspension component groups 2 on both sides are respectively connected to the interconnecting pipe 3 through the three-way valve 28, the rubber membrane 5 is arranged above the cylinder body 23 and in the outer shell 21, one end of the spiral tube 24 is connected to the three-way valve 28, and the other end of the spiral tube 24 is connected to the three-way valve 28. The end is connected to the right-angle connecting valve 29, one end of the suspension spring 26 is fixedly connected to the connecting rod 27, and the other end of the suspension spring 26 is fixedly connected to the cylinder body 23. One end of the piston rod 25 can be slidably installed in the cylinder body 23, and the other end of the piston rod 25 is fixedly connected to the connecting rod 27. Among them, the cylinder body 23 is made of aluminum alloy. Aluminum alloy has the characteristics of low density. Under the condition of meeting the strength, the overall weight of the device can be reduced. At the same time, CNC processing technology and precision processing technology are used to process aluminum alloy, which improves the smoothness and precision of the cylinder and ensures that the various components of the parts can be accurately matched. The suspension spring 26 is made of high-quality spring steel. Spring steel has high elastic limit and fatigue limit, which means that it can better withstand the impact of external force. It has good plasticity and toughness. When it is deformed by impact, it can quickly return to its original state and maintain stable performance.

[0019] In order to better connect, a fixing block 20 is provided above the rubber membrane 5. The fixing block 20 is hollow and one end of which is connected to the rubber membrane 5. The other end of the fixing block 20 protrudes from the surface of the outer shell 21 and is hinged to the sprung mass 1. The material of the fixing block 20 is aluminum alloy. Aluminum alloy has the characteristic of low density. Under the condition of meeting the strength, the overall mass of the device can be reduced. At the same time, CNC processing technology and precision processing technology are used to process the aluminum alloy, which improves the smoothness and precision of the cylinder and ensures that the parts can be accurately matched.

[0020] The movable range of the piston rod 25 is limited between the three-way valve 28 and the right-angle connection valve 29 .

[0021] More preferably, the spiral tube 24 is made of PU air hose, which has high strength and excellent corrosion resistance, strong wear resistance and long service life.

[0022] The overall working principle of the utility model is systematically described below: two hydraulic inertial suspension component groups 2 are connected to the upper chambers of their respective cylinder bodies 23 through an interconnecting pipe 3, and a valve 4 is placed in the middle of the interconnecting pipe 3. According to the road conditions, it is free to choose whether to carry out liquid interconnection. In detail, for example, when the car is driving on a bumpy road section, the valve 4 is opened to enable the anti-roll function. Among them, when one side of the car wheel rises, assuming that the left wheel rises, the left hydraulic inertial suspension component group 2 is in a compression stroke, the pressure in the upper chamber of the left liquid cylinder increases, and the left rubber membrane is squeezed to produce a cubic stiffness deformation, so that the cubic stiffness is embedded in the suspension, which can have The vibration reduction frequency band is effectively widened, making its anti-roll performance more significant than before; at this time, there is a pressure difference in the upper chambers of the left and right liquid cylinders, and the liquid flows through the interconnecting pipe 3 for flow compensation, so that the pressure in the upper chamber of the left liquid cylinder is transferred to the pressure in the upper chamber of the right liquid cylinder, and the liquid flows into the spiral tube 24 through the three-way valve 28, and then flows from the spiral tube 24 through the right-angle connecting valve into the lower chamber of the liquid cylinder, thereby pushing the right cylinder piston to rise, reducing the stroke difference between the left and right suspensions, and thereby reducing the roll angle and roll angle acceleration, wherein the increase in the upper chamber pressure of the right cylinder body 23 will simultaneously increase the suspension support force and thereby increase the grip of the right tire.

[0023] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A new type of hydraulic interconnected new energy vehicle suspension, characterized in that: The invention comprises a sprung mass (1) and a hydraulic inertia suspension component group (2), wherein two hydraulic inertia suspension component groups (2) are provided and are symmetrically arranged at the bottom ends of both sides of the sprung mass (1), the hydraulic inertia suspension component group (2) is hinge-connected to the sprung mass (1), an interconnection pipe (3) is provided between the two hydraulic inertia suspension component groups (2) and both are respectively connected to the interconnection pipe (3), a valve (4) is provided at the middle position on the interconnection pipe (3) for adjusting the amount of liquid exchange between the two liquid inertia suspensions, and a rubber membrane (5) is provided inside the hydraulic inertia suspension component group (2).

2. According to claim 1, a new type of hydraulic interconnected new energy vehicle suspension is characterized in that: The hydraulic inertia suspension component group (2) comprises a housing (21), a corrugated rubber tube (22) arranged below the housing (21), a cylinder body (23) arranged inside the housing (21) and the corrugated rubber tube (22), a spiral tube (24) arranged outside the cylinder body (23), a piston rod (25) arranged inside the cylinder body (23), a suspension spring (26) arranged outside the piston rod (25) and located below the cylinder body (23), a connecting rod (27) arranged below the piston rod (25), a three-way valve (28) arranged on the cylinder body (23) and above the piston rod (25), and a right-angle connecting valve (28) arranged on the cylinder body (23) and located below the piston. (29), the hydraulic inertia suspension component groups (2) on both sides are respectively connected to the interconnecting pipe (3) through the three-way valve (28), the rubber membrane (5) is arranged above the cylinder body (23) and arranged in the outer shell (21), one end of the spiral tube (24) is connected to the three-way valve (28), the other end of the spiral tube (24) is connected to the right-angle connection valve (29), one end of the suspension spring (26) is fixedly connected to the connecting rod (27), the other end of the suspension spring (26) is fixedly connected to the cylinder body (23), one end of the piston rod (25) can be slidably installed in the cylinder body (23), and the other end of the piston rod (25) is fixedly connected to the connecting rod (27).

3. According to claim 2, a new type of hydraulic interconnected new energy vehicle suspension is characterized in that: A fixing block (20) is arranged above the rubber membrane (5); the fixing block (20) is hollow and one end of the fixing block (20) is connected to the rubber membrane (5); the other end of the fixing block (20) protrudes from the surface of the housing (21) and is hingedly connected to the sprung mass (1).

4. According to claim 2, a new type of hydraulic interconnected new energy vehicle suspension is characterized in that: The movable range of the piston rod (25) is limited between the three-way valve (28) and the right-angle connection valve (29).

5. The novel hydraulic interconnected new energy vehicle suspension according to claim 2 is characterized in that: The spiral tube (24) is a PU air pressure hose.

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