RU2355587C1 - Suspension system for vehicles - Google Patents

Abstract

FIELD: automotive industry.

SUBSTANCE: invention relates to vehicle suspension system. Axles are fixed to the front and rear parts of the vehicle frame. The front sub-frame with front wheels are installed on the front axle, while the rear sub-frames with rear wheels are installed on the rear axle. The sub-frames are installed so that they can swing within the plane crossing longitudinal axis of symmetry perpendicularly to horizontal plane of vehicle frame. In addition the front sub-frame is linked to the frame by ropes, the rear sub-frames are linked by means of other ropes accordingly. Each rope is provided with tensioning devices. The front wheels are installed with the help of lever system and springing elements. The rear wheels are installed on the related sub-frame. Each rope is also provided with supporting device. The traveling comfort on even road is mainly ensured by lever system interacting with springing elements of the front wheels. Near rear wheels the same vibration is silenced by the rare sub-frames. The reactive force arising from head-on crash will lift the front wheel up, turn lever system and compress springing element. After that the force is transmitted to the front sub-frame, which aims at turning around axis. The effort is felt by corresponding ropes.

EFFECT: reduced metal consumption for vehicle body ensuring sufficient mechanical strength.

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Description

The invention relates to vehicle suspensions.

A vehicle suspension is known, comprising transverse levers swiveling in a vertical plane, bearing axles of wheels and interacting with elastic elements, and shock absorbers located between the levers and the frame, the axis of rotation of the levers being formed from coaxially arranged inner and outer profiled pipes and located in a vertical plane passing through the central longitudinal axis of the vehicle, one of the levers is rigidly connected to the outer pipe of the axle, and the other lever is rigidly connected to the inner pipe connected to the vehicle frame with the possibility of rotation, in addition, the elastic elements are located between the pipes (see AS USSR No. 1346448, IPC B60G 3/14, 1987).

However, this suspension is connected directly to the vehicle body and transfers bending loads arising from it to it. Bending loads determine increased requirements for the mechanical strength of the body, which ultimately makes it heavier, leading to increased fuel consumption.

A known suspension system of a vehicle containing subframes for each pair of wheels mounted between the latter perpendicular to the direction of movement of the vehicle and connected with the frame of the vehicle and with the wheels (see J. Daniels Modern Automotive Technology. M .: Astrel ACT, 2003, p. 143-145).

However, this suspension system is also directly connected to the vehicle body and transfers bending loads arising from it to it. The latter determine the increased requirements for the mechanical strength of the body, which ultimately makes it heavier, leading to increased fuel consumption.

The task of creating the inventive vehicle suspension system is to create a design that ensures the conversion of bending and torque loads on the vehicle body, perceived when hitting an obstacle, into horizontal compressive loads and thereby reducing the requirements for the mechanical strength of the body, reducing its metal consumption.

The problem is solved in that in the suspension system of the vehicle, containing elements associated with the carrier element of the vehicle in the form of subframes, and elements associated with wheels, according to the invention, the subframes are installed along the direction of movement of the vehicle in opposite parts of the carrier element of the vehicle, each subframe is pivotally mounted on the vehicle support element with the possibility of swinging in a plane passing through its longitudinal axis each other and mounted perpendicular to the horizontal plane of the vehicle supporting element, with each subframe mounted on the vehicle supporting element with the possibility of installing elements associated with the wheel on one side of the hinge and on the other side of the hinge with a flexible connecting element associated with the bearing vehicle element.

In addition, the carrier element of the vehicle can be made in the form of a frame or a supporting body, and the flexible connecting element in the form of a cable, with each subframe can be made in the form of a thin-walled profile with a section in the form of a square, triangle or circle.

The use of the proposed vehicle suspension system allows to provide the following technical result:

- convert bending and twisting loads acting on the vehicle body into horizontal compressive loads;

- reduce the requirements for mechanical strength of the body;

- reduce the intensity of the body.

Besides:

- the cost of the vehicle is reduced;

- the cost of transportation is reduced;

- improving the economic performance of the economy operating the vehicle, increasing profits.

Figure 1 shows a vehicle using the proposed suspension system, general view, figure 2 is a schematic diagram of the location on the vehicle of the proposed suspension system, top view, figure 3 is a view A in figure 2, figure 4 - view B in figure 2.

On the frame 1 of the vehicle are fixed: in its front part - axis 2, and rear axle 3. On axis 2 there is a front subframe 4 for installing front wheels 5 and 6, and on axis 3 there are rear subframes 7 and 8 for installing rear wheels 9 and 10, respectively. The front subframe 4 and the rear subframes 7, 8 are mounted for swinging in a plane passing through the longitudinal axis of its symmetry and perpendicular to the horizontal plane of the frame 1 of the vehicle, the front subframe 4 connected to the frame 1 using cables 11 and 12, and the rear subframes 7 and 8 - with the help of cables 13 and 14, respectively. Each of the cables 11, 12, 13 and 14 are equipped with tension devices 15, 16, 17 and 18, respectively. The front wheels 5 and 6 are installed using a system of levers 19 and elastic elements 20 on the front subframe 4. Each of the rear wheels 9 and 10 is mounted directly on its subframe 7 and 8, respectively. Each cable 11, 12, 13 and 14 is equipped with a supporting device 21, 22, 23 and 24, respectively.

When the vehicle is moving on a level road, smoothness is ensured mainly due to the interaction of the system of levers 19 and the elastic elements 20 of the front wheels 5 and 6. At the rear wheels 9 and 10, these vibration forces are damped directly by the rear subframes 7 and 8.

When hitting an obstacle, for example, with the front wheel 5, the resulting reactive force, which lifts the front wheel 5, rotates the lever system 19 and compresses the elastic element 20. In this case, the force is also transmitted to the front subframe 4, which in this case tends to rotate on the axis 2. The force is perceived by the cables 11, 12 and is damped due to its elastic properties. In this case, no matter what direction this reactive force is, it is converted due to the axis 2 and cables 11, 12 into compressive unidirectional force on the frame 1.

When hitting an obstacle, for example, with the rear wheel 9, the resulting reactive force acts on the rear subframe 7, which tends to turn on the axis 3. The force is perceived by the cable 13 and is extinguished due to its elastic properties. In this case, no matter what direction this reactive force is, it is also converted due to the axis 3 and the cable 13 into a compressive unidirectional force on the frame 1.

When the front wheels 5 and 6 simultaneously collide with an obstacle, the resulting reactive force rotates the lever systems 19 and compresses the elastic elements 20 at both front wheels. In this case, the force is also transmitted to the front subframe 4, is perceived by the cables 11, 12 and is converted due to the axis 2 and the cables 11, 12 into a horizontal compressive unidirectional force on the frame 1.

When the rear wheels 9 and 10 simultaneously collide with an obstacle, the resulting reactive force acts on the rear subframes 7 and 8, the cables 12 and 13, respectively, and is converted into horizontal compressive unidirectional force on the frame 1 due to their elastic properties independently of each other.

When the vehicle moves at a considerable speed after hitting an obstacle, one of the wheels (or all wheels at the same time) can for a short time come out of contact with the surface of the road surface (freeze in the air). At such moments, the supporting devices 21, 22, 23 and 24 hold the wheels in the transport position by interacting with the cables 11, 12, 13 and 14, respectively.

During operation, when loosening the cables 11, 12, 13, the tension of the latter can be adjusted using the tension devices 15, 16, 17 and 18, respectively.

Claims (7)

1. The suspension system of the vehicle, containing elements associated with the supporting element of the vehicle, in the form of subframes, and elements associated with wheels, characterized in that the subframes are installed along the direction of travel of the vehicle in opposite parts of the supporting element of the vehicle, each subframe mounted on the supporting element of the vehicle pivotally with the possibility of swinging in a plane passing through the longitudinal axis of its symmetry and perpendicular to the horizontal th plane of the carrier element of the vehicle, with each subframe mounted on the carrier element of the vehicle with the possibility of installing elements associated with the wheel, on one side of the hinge, and on the other side of the hinge with a flexible connecting element associated with the bearing element of the vehicle facilities. 2. The vehicle suspension system according to claim 1, characterized in that the supporting element of the vehicle is made in the form of a frame. 3. The suspension system of the vehicle according to claim 1, characterized in that the supporting element of the vehicle is made in the form of a supporting body. 4. The vehicle suspension system according to claim 1, characterized in that the flexible connecting element is made in the form of a cable. 5. The vehicle suspension system according to claim 1, characterized in that each subframe is made in the form of a thin-walled profile with a cross-section in the form of a square. 6. The vehicle suspension system according to claim 1, characterized in that each subframe is made in the form of a thin-walled profile with a cross section in the form of a triangle. 7. The vehicle suspension system according to claim 1, characterized in that each subframe is made in the form of a thin-walled profile with a cross section in the form of a circle.

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