CN213138423U

CN213138423U - Electric automobile independent suspension interconnection control device with variable rigidity

Info

Publication number: CN213138423U
Application number: CN202021633468.1U
Authority: CN
Inventors: 任泰安; 陈进; 马军; 李勇
Original assignee: Jiangsu Wangpai Dc Motor Manufacturing Co ltd
Current assignee: Jiangsu Wangpai Dc Motor Manufacturing Co ltd
Priority date: 2020-08-08
Filing date: 2020-08-08
Publication date: 2021-05-07
Anticipated expiration: 2030-08-08

Abstract

The utility model discloses an electric automobile independent suspension interconnection controlling means of variable rigidity. Comprises a frame, 4 groups of interconnected air pressure control loops and 4 independent air suspensions. The frame is used for supporting the whole interconnected assembly, the four independent air suspensions are used for achieving variable suspension rigidity, and the interconnected hydraulic control loop is used for achieving variable rigidity and interconnection of the air springs. When one side of the suspension is impacted by the ground and lifted, the air suspension spring on the side is decompressed and lowered, and the air springs on the other three sides of the suspension are boosted to lift the suspension. Therefore, the balance and stability of the whole vehicle body are ensured when the vehicle runs on the uneven road surface. The utility model is suitable for a stability control of automobile body can be realized to in-wheel motor driven electric automobile, improves riding comfort, the stability of traveling of whole car.

Description

Electric automobile independent suspension interconnection control device with variable rigidity

Technical Field

The utility model belongs to by in-wheel motor driven new forms of energy electric automobile field, concretely relates to electric automobile independent suspension interconnection controlling means of variable rigidity.

Background

In order to solve the problem that the stability and riding comfort of a vehicle body are poor due to the fact that each side wheel of a traditional vehicle is subjected to uneven impact load on the ground in the driving process, a four-wheel independent air spring suspension is provided. Although the structure can ensure that the impact load on each side wheel does not influence the vibration of the suspensions on the other three sides in the running process of the vehicle, the structure can only realize the stability control of the vehicle under the condition of not large impact load on the ground, and when the impact is too large, the structure can cause the vibration of the vehicle body, so that the load on each side wheel is unequal, and the stability of the vehicle body and the riding comfort are influenced.

SUMMERY OF THE UTILITY MODEL

To this condition, the utility model provides a variable rigidity's electric automobile independent suspension interconnection controlling means, the ground impact load that certain one side wheel received can make this side air spring release and reduce the height, makes all the other three sides air springs step up and raise the suspension height to maintain the automobile body balance, with the stationarity that improves the vehicle and travel.

In order to achieve the above purpose, the utility model adopts the following scheme:

the utility model provides a variable rigidity's electric automobile independent suspension interconnection controlling means, includes frame, 4 interconnected air pressure control circuit of group and 4 independent air suspension. The frame comprises 6 frame rods with different lengths, such as 6 rods 1A, 10

rods

1B, 10 rods 1C, 4 rods 1D, 4 rods 1E, 5 rods 1F and the like; the interconnected air pressure control loop comprises an interconnected air pressure control loop bottom plate, an air storage tank, air storage tank air holes, a guide pipe, an air hole joint, a pressure relief valve, a one-way valve, a guide pipe bracket bottom plate and 4 guide pipe brackets; the independent air suspension comprises wheels, a suspension connecting piece, a lower swing arm, an upper swing arm and an air spring; the 4 groups of interconnected air pressure control loops are connected with the frame through interconnected air pressure control loop bottom plates, and the 4 independent air suspensions are connected with the interconnected air pressure control loops through air spring air cylinder air holes.

In the technical scheme, the frame is divided into an upper layer, a middle layer and a lower layer, and each layer is provided with two A rod pieces; the upper layer is welded and fixed through a left rod A and a right rod A by 2D rods respectively in the front and the back, the middle layer is welded and fixed through a front rod A and a back rod E by 2E rods respectively, and the lower layer is welded and fixed through a front rod A and a back rod F by 2F rods respectively; the upper middle layer and the lower middle layer are welded and fixed through 5B rods on the left and right respectively, and the middle lower layer and the lower middle layer are welded and fixed through 5C rods on the left and right respectively; the left and right rods A of each layer are horizontally arranged in the same plane, the vertical direction is not arranged in the same plane, the frame is in 2 inverted and overlapped trapezoids when seen from the front and back direction of the frame, and the lower bottom edge of the upper trapezium is superposed with the upper bottom edge of the lower trapezium.

In the technical scheme, the 4 groups of interconnected air pressure control loops have the same structure and are symmetrically arranged on the bottom plate of the interconnected air pressure control loops from front to back and from left to right; the interconnected air pressure control loop bottom plate is connected with the frame A through welding.

In the technical scheme, the gas storage tank and the conduit bracket bottom plate in the interconnected pneumatic control circuit are connected with the interconnected pneumatic control circuit bottom plate through bolts; the air storage tank is connected with a guide pipe A through an air hole of the air storage tank, and the guide pipe A is respectively connected with a guide pipe C connected with a pressure relief valve and a guide pipe B connected with a one-way valve through an air hole joint A; the pressure relief valve connecting conduit E and the one-way valve connecting conduit D are connected with the air hole joint B; the air hole joint B is connected with the conduit F and is connected with the air spring through an air hole of the pneumatic cylinder.

In the technical scheme, an air spring in the independent air suspension is connected with a conduit in an interconnected air pressure control loop through an air hole of a pneumatic cylinder, the upper end of the air spring is connected with the C section of the upper-layer frame A, and the lower end of the air spring is connected with a lower swing arm; one end of the lower swing arm is connected with the section A of the lower-layer frame A, and the other end of the lower swing arm is connected with the suspension connecting piece; one section of the upper swing arm is connected with the section B of the middle-layer frame A, and the other end of the upper swing arm is connected with the suspension connecting piece; the suspension connecting piece is connected with the upper swing arm, the lower swing arm and the wheel. The 4 independent air suspensions have the same structure and are symmetrically distributed on the front and back and the left and right of the frame.

The utility model discloses an above technical scheme, can reach following beneficial effect:

(1) the utility model discloses a variable rigidity independent suspension interconnection device can adjust the size of every side independent suspension rigidity by automatic coordinated control to adjust corresponding suspension height, maintain the balance of automobile body.

(2) The utility model discloses an air spring and pneumatic circuit are favorable to reduceing by in-wheel motor drive electric automobile's spring-loaded mass to improve the stability that the vehicle travel.

Drawings

Fig. 1 is a top view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a schematic view of the frame of the present invention.

The reference numerals are explained below: 1-a vehicle frame; 2-interconnecting the air pressure control loop bottom plate; 3-a gas storage tank; 4-air holes of the air storage tank; 5-a catheter; 6-air hole joint; 7-a pressure relief valve; 8-a one-way valve; 9-a catheter holder base plate; 10-a catheter stent; 11-a wheel; 12-a suspension link; 13-lower swing arm; 14-pneumatic cylinder air holes; 15-air spring; 16-upper swing arm; a-lower swing arm connecting end; b-an upper swing arm connecting end; c-air spring connecting end.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, but the scope of the present invention is not limited thereto.

As shown in fig. 1, the utility model discloses a variable rigidity independent suspension interconnection device includes that frame, 4 group's interconnected pneumatic control return circuits and 4 independent air suspension constitute. The 4 groups of interconnected air pressure control loops and the 4 independent air suspensions are respectively and symmetrically connected with the front and the back of the frame and the left and the right of the frame.

As shown in fig. 2, the frame is formed by welding 6 frame rods with different lengths, such as 6 1A rods, 10 1B rods, 10 1C rods, 4 1D rods, 4 1E rods, 5 1F rods and the like; the 6 1A frame rods are arranged in an upper layer, a middle layer and a lower layer, and each layer is provided with two 1A rod pieces; the upper layer is welded and fixed through the left rod 1A and the right rod 1A through the front rod 1D and the rear rod 1D respectively, the middle layer is welded and fixed through the front rod 1E and the rear rod 1E, and the lower layer is welded and fixed through the front rod 1A and the rear rod 1F respectively; the upper middle layer and the lower middle layer are welded and fixed through 5 left and right 1B rods respectively, and the middle lower layer and the lower middle layer are welded and fixed through 5 left and right 1C rods respectively; the left and right 1A rods of each layer are horizontally arranged in the same plane, the vertical direction is not arranged in the same plane, the frame is in 2 inverted and overlapped trapezoids when viewed from the front and back direction of the frame, and the lower bottom edge of the upper trapezium is superposed with the upper bottom edge of the lower trapezium.

The interconnection air pressure control circuit comprises an interconnection air pressure control circuit bottom plate 2, an air storage tank 3, air storage tank air holes 4, a guide pipe 5, an air hole joint 6, a pressure relief valve 7, a one-way valve 8, a guide pipe

support bottom plate

9 and 4 guide pipe supports 10. As shown in fig. 1, the air storage tank 3 and the conduit support bottom plate 9 are connected with the interconnected pneumatic control circuit bottom plate 2 through bolts; the gas storage tank 3 is connected with a guide pipe 5A through a gas storage tank gas hole 4, and the guide pipe 5A is respectively connected with a guide pipe 5C connected with a pressure relief valve 7 and a guide pipe 5B connected with a one-way valve 8 through a gas hole joint 6A; the pressure relief valve 7 connecting conduit 5E and the one-way valve 8 connecting conduit 5D are connected with the air hole joint 6B; the air hole joint 6B is connected with the conduit 5F and is connected with the air spring through the air hole 14 of the pneumatic cylinder. The 4 interconnected air pressure control loops have the same structure and are symmetrically arranged on the bottom plate 2 of the interconnected air pressure control loop in the front-back and left-right directions; the interconnected air pressure control loop bottom plate 2 is connected with the frame 1A through welding.

The independent air suspension comprises wheels 11, a suspension connecting piece 12, a lower swing arm 13, an upper swing arm 16 and an air spring 15. As shown in fig. 3 and 1, an air spring 15 is connected with a conduit 5F in an interconnected air pressure control circuit through an air hole 14 of the air cylinder, the upper end of the air spring 15 is connected with the section C of the upper frame 1A, and the lower end is connected with the lower swing arm 13; one section of the lower swing arm 13 is connected with the section A of the lower frame 1A, and the other end is connected with the suspension connecting piece 12; one section of the upper swing arm 16 is connected with the section B of the middle layer frame 1A, and the other end is connected with the suspension connecting piece 13; the upper end of the suspension connecting piece 12 is hinged with the bottom end of the upper swing arm 16, the lower end of the suspension connecting piece is hinged with the bottom end of the lower swing arm 13, and the middle of the suspension connecting piece is provided with a through hole which is connected with a hub of the wheel 11 through threads. The 4 independent air suspensions have the same structure and are symmetrically distributed on the front and the back and the left and the right of the frame 1.

The variable-rigidity electric automobile independent suspension interconnection control device has the working process as follows: when a wheel 11 on one side is lifted by ground impact load, the air pressure of the pressure relief valve 7 reaches a preset threshold value and is opened to enable air to flow into the air storage tank 3 from the air spring 15 through the air holes 14 of the air pressure cylinder, the guide pipe 5F, the air hole joint 6B, the guide pipe 5E, the pressure relief valve 7, the guide pipe 5C, the air hole joint 6A, the guide pipe 5A and the air holes 4 of the air storage tank, the air pressure in the air storage tank 3 is increased, so that the one-way valves 8 of the rest three air pressure circuits are opened, the air flows into the air springs 15 of the rest 3 independent air suspensions from the air storage tank 3 through the air holes 4 of the air storage tank, the guide pipe 5A, the air hole joint 6A, the guide pipe 5C, the pressure relief valve 7, the guide pipe 5E, the air hole joint 6B, the guide pipe 5F and the air holes.

The above embodiment is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and any obvious modifications, replacements or variations which can be made by those skilled in the art without departing from the essence of the present invention belong to the protection scope of the present invention.

Claims

1. The variable-rigidity interconnection control device for the independent suspension of the electric automobile comprises a frame and a plurality of groups of interconnection air pressure control loops and a plurality of independent air suspensions, and is characterized in that the plurality of groups of interconnection air pressure control loops are identical in structure and are symmetrically arranged on a bottom plate of the interconnection air pressure control loops in a front-back and left-right mode; the plurality of independent air suspension frames are also the same in structure and are symmetrically distributed in the front and the back and the left and the right of the frame; the frame comprises a plurality of rods 1A, a plurality of rods 1B, a plurality of rods 1C, a plurality of rods 1D, a plurality of rods 1E and a plurality of rods 1F, and all the rods form a whole; the interconnected air pressure control loop comprises an interconnected air pressure control loop bottom plate (2), an air storage tank (3), air storage tank air holes (4), guide pipes (5), air hole joints (6), a pressure relief valve (7), a one-way valve (8), a guide pipe support bottom plate (9) and a plurality of guide pipe supports (10); the independent air suspension comprises wheels (11), a suspension connecting piece (12), a lower swing arm (13), an upper swing arm (16) and an air spring (15); the plurality of groups of interconnected air pressure control loops are connected with the frame (1) through interconnected air pressure control loop bottom plates (2), and the plurality of independent air suspensions are connected with the guide pipes (5F) of the interconnected air pressure control loops through air spring air cylinder air holes (14).

2. The variable-stiffness interconnection control device for the independent suspension of the electric automobile according to claim 1, wherein: the frame is arranged in an upper layer, a middle layer and a lower layer, and each layer is provided with two 1A rod pieces; the upper layer is welded and fixed through the left rod 1A and the right rod 1A through the front rod 1D and the rear rod 1D respectively, the middle layer is welded and fixed through the front rod 1E and the rear rod 1E, and the lower layer is welded and fixed through the front rod 1A and the rear rod 1F respectively; the upper middle layer and the lower middle layer are welded and fixed through 5 left and right 1B rods respectively, and the middle lower layer and the lower middle layer are welded and fixed through 5 left and right 1C rods respectively.

3. The variable-stiffness interconnection control device for the independent suspension of the electric automobile according to claim 1, wherein: the air storage tank (3) and the guide pipe bracket bottom plate (9) in the interconnected air pressure control loop are connected with the interconnected air pressure control loop bottom plate (2) through bolts; the gas storage tank (3) is connected with a guide pipe 5A through a gas storage tank gas hole (4), and the guide pipe 5A is respectively connected with a guide pipe 5C connected with a pressure relief valve (7) and a guide pipe 5B connected with a one-way valve (8) through a gas hole joint 6A; a pressure relief valve (7) connecting conduit 5E and a one-way valve (8) connecting conduit 5D are connected with the air hole joint 6B; the air hole joint 6B is connected with the conduit 5F and is connected with an air spring (15) through an air hole (14) of the pneumatic cylinder.

4. The variable-stiffness interconnection control device for the independent suspension of the electric automobile according to claim 1, wherein: an air spring (15) in the independent air suspension is connected with a conduit (5) in an interconnected air pressure control loop through an air hole (14) of the air cylinder, the upper end of the air spring (15) is connected with the C section of the upper-layer frame 1A, and the lower end of the air spring is connected with a lower swing arm (13); one section of the lower swing arm (13) is connected with the section A of the lower frame 1A, and the other end of the lower swing arm is connected with the suspension connecting piece (12); one section of the upper swing arm (16) is connected with the section B of the middle layer frame 1A, and the other end is connected with the suspension connecting piece (12).

5. The variable-stiffness interconnection control device for the independent suspension of the electric vehicle according to claim 2, wherein: the left and right rods 1A of the upper, middle and lower layers of the frame (1) are horizontally arranged in the same plane, the vertical direction is different from the same plane, the frame is in 2 inverted and overlapped trapezoids when seen from the front and back directions of the frame, and the lower bottom edge of the upper trapezium is superposed with the upper bottom edge of the lower trapezium.

6. The variable-stiffness interconnection control device for the independent suspension of the electric automobile according to claim 4, wherein: the upper end of the suspension connecting piece (12) is hinged with the bottom end of the upper swing arm (16), the lower end of the suspension connecting piece is hinged with the bottom end of the lower swing arm (13), and the middle of the suspension connecting piece is provided with a through hole which is connected with a wheel hub of the wheel (11) through threads.