CN209888967U

CN209888967U - Hydro-pneumatic spring independent suspension system of wheel-track conversion vehicle and wheel-track conversion vehicle

Info

Publication number: CN209888967U
Application number: CN201920626973.4U
Authority: CN
Inventors: 杨森; 凡春阳
Original assignee: BEIJING CAMC YANJING AUTO Co Ltd
Current assignee: BEIJING CAMC YANJING AUTO Co Ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2020-01-03
Anticipated expiration: 2029-05-05

Abstract

The utility model relates to a wheel-track conversion vehicle's independent suspension system of hydro-pneumatic spring comprises each independent suspension who connects in frame (1) and wheel (5), and the wheel is for dividing into eight wheels of four groups, and middle two sets of homonymy wheel respectively covers a track (9) outward and forms middle crawler-type wheel, independent suspension is hydro-pneumatic spring suspension structure, and the independent suspension oil circuit of the front and back two sets of wheels is parallelly connected, the independent suspension oil circuit of middle two sets of wheels is parallelly connected. The utility model discloses a solenoid valve on the control circuit can realize the conversion of two kinds of traveling modes of wheel and track, makes the vehicle can adapt to more complicated road conditions and travel.

Description

Hydro-pneumatic spring independent suspension system of wheel-track conversion vehicle and wheel-track conversion vehicle

Technical Field

The utility model belongs to the technical field of automotive suspension control, a wheel track conversion vehicle's independent suspension system is related to, and specifically speaking is a system that can control the tire and promote and descend and can realize the wheeled and crawler-type vehicle independent suspension control who traveles interconversion of military vehicle to and be equipped with the vehicle that can realize the wheel track conversion of this independent suspension system.

Background

Due to the complexity of the driving road conditions of military vehicles, independent suspensions are mostly adopted in the suspension structure, and wheel-type structures are mostly adopted in wheels. The disadvantages of wheeled vehicles are as follows: the weight of military wheeled vehicles cannot be too heavy due to the need for wheeled vehicles to account for ground contact pressure, otherwise the wheels tend to sag in soft terrain; the army vehicle is not too thick due to the influence of weight, so that the army vehicle is weak in protection performance; the turning radius of the wheeled military vehicle is larger than that of a crawler type military vehicle. There are also tracked military vehicles of the tank type in military vehicles, and the disadvantages of the tracked military vehicles are as follows: the crawler has low running speed and high energy consumption, and the crawler part is easy to damage; the mobility of the tracked vehicle is lower than that of a wheeled vehicle; once the track of the crawler is broken, the whole crawler cannot move and bounce.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome not enough and provide an environmental suitability wide that military vehicle prior art exists, the vehicle of the manifold wheel-track conversion of service function and a vehicle independent suspension system for realizing the wheel-track conversion.

The utility model relates to a vehicle hydro-pneumatic spring independent suspension system of wheel-track conversion comprises each independent suspension who connects in frame (1) and wheel (5), eight wheels of wheel for dividing into four groups, middle two sets of homonymy wheel respectively covers a track (9) outward and forms middle crawler-type wheel, independent suspension is hydro-pneumatic spring suspension structure, and the independent suspension oil circuit of the front and back two sets of wheels is parallelly connected, the independent suspension oil circuit of middle two sets of wheels is parallelly connected.

The hydro-pneumatic spring suspension comprises a lower arm support (2), a lower control arm (3), an upper control arm (4), an oil cylinder (16), an energy accumulator (17) and a damping valve (19); one end of the lower control arm is connected with two lower arm supports through a rotating shaft and is fixed on the frame, and the other end of the lower control arm is hinged with the wheel (5); one end of the upper control arm is connected with the frame, and the other end of the upper control arm is hinged with the wheel; the oil cylinder is arranged on the frame, a piston rod of the oil cylinder is connected with the lower control arm, a cylinder body of the oil cylinder is connected with the damping valve, and the damping valve is connected with the energy accumulator through a pipeline.

The lower control arm (3) is V-shaped, two ends of a V-shaped opening of the lower control arm are provided with rotating shafts connected with lower arm supports, the two lower arm supports are connected with the vehicle frame (1) through the rotating shafts, and the V-shaped sealing end of the lower control arm is hinged to the vehicle wheels (5).

In the hydro-pneumatic spring independent suspension system, oil paths in the independent suspensions of the middle two groups of wheels are connected in parallel, and oil paths in the independent suspensions of the front and rear groups of wheels are connected in parallel.

The hydro-pneumatic spring independent suspension system is additionally provided with a wheel-side valve plate (18) arranged on a rack, the wheel-side valve plate is integrated with a solenoid valve c, a solenoid valve d and a solenoid valve e which are arranged in an oil way, the solenoid valve e is arranged in an oil pipe at the end (upper end) where a cylinder body of the oil cylinder (16) is located and connected with a damping valve (19), and two oil pipes at the end (lower end) where a piston rod of the oil cylinder (16) is located are provided with a solenoid valve b and a solenoid valve k; by closing the electromagnetic valves c, e and k and opening the electromagnetic valves b and d, oil is fed into the oil cylinder through the electromagnetic valve b, oil is discharged from the electromagnetic valve d, and the oil cylinder is in a compressed state to drive the lower control arm to lift the wheels upwards; on the contrary, by closing the electromagnetic valves b, d and e and opening the electromagnetic valves c and k, the oil cylinder is in a lifting state to drive the wheels to descend.

The damping valve (19) is a fixed damping valve or a variable damping valve.

The utility model provides a pair of wheel-track conversion vehicle, including frame (1), wheel (5) and aforementioned vehicle independent suspension system.

Design more than adopting, the utility model discloses a vehicle independent suspension system has following advantage: the wheels are reasonably grouped, the independent suspension structure is improved based on the original oil-gas spring, the front and the rear oil ways are connected in parallel, the middle two oil ways are connected in parallel, and the electromagnetic valve on the control oil way can realize the conversion of two running modes of the wheels and the crawler, so that the vehicle can adapt to more complex road conditions to run, the conversion of wheel type and crawler type is realized, the capability of the vehicle for dealing with the complex road conditions is improved, and the conversion of 4 multiplied by 4 wheel type and crawler type running modes is realized.

Drawings

Fig. 1 is a structural diagram of a semi-active hydro-pneumatic spring suspension in a wheel-track conversion independent suspension system of the present invention;

FIG. 2 is a view of the left side view of FIG. 1 rotated 90 counterclockwise;

FIG. 3 is an axial view of FIG. 1 showing the components of the wheel-track switching vehicle wheel, frame and hydro-pneumatic spring independent suspension system of the present invention;

fig. 4 is a hydraulic schematic diagram of a semi-active hydro-pneumatic spring suspension in the wheel-track conversion independent suspension system of the present invention;

FIG. 5 is a schematic view of a 4 × 4 wheel drive ride;

fig. 6 is a schematic view of track wheel drive travel.

The reference numerals are represented as: the device comprises a frame 1, a lower arm support 2, an upper control arm 3, a lower control arm 4, wheels 5, an oil cylinder 16, an energy accumulator 17, a wheel edge valve plate 18, a crawler 9, a fixed damping valve 19 and an independent suspension 20.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

The existing military vehicles are either wheeled or tracked, the respective use environments of the military vehicles are limited, and the functions are single. For the user demand of adaptation comprehensive combat readiness, the utility model discloses at first propose the design of wheel-track conversion in military vehicle, provide a wheel-track conversion vehicle.

The wheel-track switching vehicle mainly improves an independent suspension system of the original military vehicle, and the independent suspension system is utilized to control the lifting of wheels, so that the wheel-track switching of the vehicle is realized. The structural design of the wheel-track conversion vehicle is shown in fig. 3 as an example, and comprises a vehicle frame 1 and eight wheels 5 (four wheels on each side) which are distributed and fixed on two sides of the vehicle frame, wherein each wheel 5 is connected with the vehicle frame through a respective independent suspension 20, and the lifting of each wheel is controlled through the independent suspension; all the independent suspensions 20 form a vehicle independent suspension system, and the grouped lifting of the wheels is controlled by the independent suspension system. Furthermore, two wheels 5 fixed on the middle part of the frame are externally covered with a crawler 9 (the inner surface of the crawler 9 is provided with bulges matched with the patterns on the surface of the wheel tyre, after the tyre is deflated, the crawler is arranged on the surface of the tyre, then the tyre is inflated, the crawler is controlled to be tensioned), and the middle two wheels are assembled into a belt type to form a middle two groups of crawler wheels.

The military vehicle designed above can adapt to different use conditions to select different driving modes: when the vehicle runs on the road, the middle two groups of wheels (covered with the crawler belts) can be lifted, so that the vehicle is equivalent to a 4 x 4 driven automobile (see fig. 5) and can run at high speed. On off-road surfaces where tracks are required to travel, the middle two sets of track wheels may be lowered while the first and fourth sets of wheels at the two ends of the frame are raised so that tracks may be used for travel (see fig. 6).

The vehicle independent suspension system controls the wheels to orderly lift. The independent suspensions constituting the independent suspension system of the vehicle may be hydro-pneumatic spring suspension structures. Referring to fig. 1-4, the independent suspension system of the wheel-track switching vehicle with the hydro-pneumatic spring suspension structure comprises a lower arm support 2, a lower control arm 3, an upper control arm 4, an oil cylinder 16, an energy accumulator 17, a wheel valve plate 8 and a damping valve 19, wherein the lower arm support 2, the lower control arm 3, the upper control arm 4, the oil cylinder 16, the energy accumulator 17, the wheel valve plate 8 and the damping valve. Each wheel 5 is provided with a semi-active hydro-pneumatic spring suspension, the embodiment shown in fig. 1 and 3 is provided with four groups of eight wheels, which are defined as a first group of wheels, a second group of wheels, a third group of wheels and a fourth group of wheels in sequence, and the outer ends of the second group of wheels 5 and the outer ends of the third group of wheels are provided with a crawler belt 9 respectively at the left and the right. Wherein:

the lower control arm 3 is V-shaped, two ends of a V-shaped opening of the lower control arm are connected with two lower arm supports 2 through a rotating shaft and fixed on the vehicle frame 1, one end of the upper control arm 4 is directly connected with the vehicle frame 1 through a pin shaft, and the other end of the upper control arm 4 and the V-shaped sealing end of the lower control arm 3 are respectively hinged with the vehicle wheel 5 through ball pins. The oil cylinder 16 is arranged on the frame 1, a piston rod of the oil cylinder 16 is connected with the lower control arm 3 through a pin shaft, the oil cylinder 16 is connected with the energy accumulator 17 and the damping valve 19, the energy accumulator 17 is fixed at the top of the outer side of the oil cylinder 16 and is connected with the damping valve 19 through a pipeline, and the damping valve 19 is connected with the electromagnetic valve e on the wheel-side valve plate. The accumulator 17 can realize short-term large-scale oil supply, system pressure maintaining, emergency energy and impact pressure alleviation. The damping valve 19 is used to adjust the damping of the accumulator inlet and outlet oil.

Referring to fig. 4, the second and third sets of wheel oil passages are connected in parallel, and the first and fourth sets of wheel oil passages are connected in parallel. Wherein the cylinder damping valve 19 of the second set of wheel independent suspensions is used to adjust the damping of the accumulator in and out of the oil. And the wheel valve plate is integrated with an electromagnetic valve c, an electromagnetic valve d and an electromagnetic valve e which are arranged on an oil way. The lower end of the oil cylinder 16 (the end where the piston rod is located, i.e. the end connected with the lower control arm is defined as the lower end) is connected with an electromagnetic valve b and an electromagnetic valve k on two oil pipes, the upper end (the end where the cylinder body is located is defined as the upper end) is connected with an electromagnetic valve e on the wheel valve plate 18, and the electromagnetic valve e is connected with a damping valve 19. When the vehicle independent suspension system with the semi-active hydro-pneumatic spring suspension structure works, when two groups of crawler wheels in the middle need to ascend, the electromagnetic valves c, e and k in the second group of wheels and the third group of wheel suspensions are closed, the electromagnetic valves b and d are opened, the oil cylinder 16 takes oil through the electromagnetic valve b, the electromagnetic valve d takes oil out, and the oil cylinder 16 is in a compression state. And because the cylinder body of the oil cylinder 16 is fixed on the vehicle frame, the piston rod is fixed on the lower control arm 3, and after the oil cylinder 16 is compressed, the lower control arm 3 is driven to lift upwards, so that the wheels can be controlled to lift. On the contrary, the solenoid valves b, d and e are closed, and the solenoid valves c and k are opened, so that the cylinder 16 is in the lifting state and the wheels 5 can be lowered.

Similarly, the first group of wheels and the fourth group of wheels are controlled by the same principle to realize simultaneous ascending or descending. The damping valve 19 is a fixed damping valve, and in the normal running process, the electromagnetic valves b and k are closed, so that the semi-active hydro-pneumatic spring suspension is formed. The damping valve 19 is changed into a variable damping valve, namely an active oil-gas suspension system, and the wheel lifting hydraulic control principle is the same.

By using the wheel-track conversion vehicle independent suspension system with the semi-active hydro-pneumatic spring suspension structure, the switching of lifting the middle two groups of wheels and lowering the front and rear two groups of wheels (4 multiplied by 4 wheel type running) and lifting the middle two groups of wheels and lowering the front and rear two groups of wheels (track type running) can be realized through controlling the electromagnetic valve.

It will be understood by those skilled in the art that these examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention, and that various equivalent modifications and adaptations of the invention are intended to fall within the scope of the invention disclosed herein.

Claims

1. The hydro-pneumatic spring independent suspension system of the wheel-track conversion vehicle is composed of independent suspensions connected to a vehicle frame (1) and wheels (5), and is characterized in that the wheels are eight wheels which are divided into four groups, a track (9) is respectively coated on the two same-side wheels in the middle group to form a middle crawler-type wheel, the independent suspensions are of hydro-pneumatic spring suspension structures, the independent suspension oil ways of the front and rear groups of wheels are connected in parallel, and the independent suspension oil ways of the two middle groups of wheels are connected in parallel.

2. The hydro-pneumatic spring independent suspension system according to claim 1, wherein the hydro-pneumatic spring suspension comprises a lower arm support (2), a lower control arm (3), an upper control arm (4), a cylinder (16), an accumulator (17) and a damping valve (19); one end of the lower control arm is connected with the lower arm support through a rotating shaft and is fixed on the frame, and the other end of the lower control arm is hinged with the wheel (5); one end of the upper control arm is connected with the frame, and the other end of the upper control arm is hinged with the wheel; the oil cylinder is arranged on the frame, a piston rod of the oil cylinder is connected with the lower control arm, a cylinder body of the oil cylinder is connected with a damping valve, and the damping valve is connected with the energy accumulator through a pipeline.

3. The hydro-pneumatic spring independent suspension system as claimed in claim 2, wherein the lower control arm (3) is V-shaped, two ends of the V-shaped opening are provided with rotating shafts connected with the lower arm supports, the two lower arm supports are connected through the rotating shafts and then connected with the vehicle frame (1), and the V-shaped sealing end of the lower control arm is hinged with the vehicle wheel (5).

4. The hydro-pneumatic spring independent suspension system according to claim 1, 2 or 3, wherein the oil paths in the independent suspensions of the middle two sets of wheels are connected in parallel, and the oil paths in the independent suspensions of the front and rear two sets of wheels are connected in parallel.

5. The hydro-pneumatic spring independent suspension system according to claim 4, characterized in that a wheel-side valve plate (18) mounted on a rack is additionally arranged, a solenoid valve c, a solenoid valve d and a solenoid valve e which are arranged in an oil path are integrated on the wheel-side valve plate, the solenoid valve e is arranged in an oil pipe at the cylinder body of the hydro-cylinder (16) and connected with a damping valve (19), a solenoid valve b and a solenoid valve k are arranged on two oil pipes at the end of the piston rod of the hydro-cylinder (16), the solenoid valves c, e and k are closed, the solenoid valves b and d are opened, oil is fed into the hydro-cylinder through the solenoid valve b, oil is discharged from the solenoid valve d, the hydro-cylinder is in a compressed state to drive the control arm to lift up the wheel, and conversely, the solenoid valves b, d and e are closed, the solenoid valves c.

6. The hydro-pneumatic spring independent suspension system according to claim 5, wherein the damping valve (19) is a constant damping valve or a variable damping valve.

7. A wheel-track conversion vehicle comprising a frame (1), a wheel (5) and a vehicle independent suspension system according to any one of claims 1 to 6.