CN200995600Y - Oil-gas spring independent suspension and heavy truck therewith - Google Patents

Abstract

An oil-pneumatic spring independent suspension and a heavy-duty vehicle using the suspension. The oil-pneumatic springs are installed on both sides of the axle and respectively connected to the vehicle frame and the wheel set. The feature is that the oil-pneumatic spring independent suspension includes: an oil-pneumatic spring; , including the upper bracket of the oil-gas spring, which is pivotally connected to the upper lug of the oil-gas spring; the lower fixed connection part, including the double-wishbone connecting bracket, fixed on the frame; the upper cross-arm assembly, one end of which is pivotally connected to the double-wishbone The lower end of the oil and gas spring is connected, and the other end is connected to the steering knuckle of the wheel set through the upper bushing body and the upper kingpin; the lower wishbone assembly, one end is pivotally connected to the double wishbone connecting bracket, and the other end is connected through the lower bushing body and the lower kingpin The steering knuckle of the wheel set; the limit adjustment device, including rubber limiters and limit screws, are respectively fixed on different positions of the double wishbone connecting bracket to play the role of upper and lower limit. The heavy-duty vehicle adopting the suspension can effectively improve vehicle smoothness, handling stability and simply and conveniently change the vehicle height.

Description

Oil-pneumatic spring independent suspension and heavy-duty vehicle using the suspension

technical field

The utility model relates to an automobile independent suspension and a heavy-duty automobile using the suspension, in particular to an oil-gas spring independent suspension for multi-axle heavy-duty automobiles and a heavy-duty automobile using the suspension.

Background technique

Existing suspensions of heavy vehicles mostly use leaf springs as non-independent suspensions with elastic elements. The stiffness of the leaf springs is linear, the bias frequency of the car is large, and the height adjustment range of the vehicle frame is small. The oil-pneumatic spring independent suspension device has strong nonlinearity, which can ensure that the car has better ride comfort when driving with no load or full load. By adjusting the amount of oil and gas of the oil and gas spring, the adjustment of the height of the vehicle can be realized conveniently. However, how to use oil-pneumatic springs on heavy-duty vehicles as independent suspension elastic elements is a hot topic in general research in the industry; in addition, how to ensure that the inclination angle of the kingpin when the wheels of multi-axle heavy-duty vehicles bounce up and down for the oil-pneumatic spring suspension structure The variation and the lateral displacement variation of the wheel contact point are the smallest, which is also the technical problem to be solved by the utility model.

Contents of the invention

The technical problem to be solved by the utility model is to provide an oil-pneumatic spring independent suspension for heavy-duty vehicles and a heavy-duty vehicle using the oil-pneumatic spring independent suspension, which can effectively improve vehicle ride comfort, handling stability and simplicity and convenience. Change vehicle height.

In order to achieve the above purpose, the utility model provides an oil-pneumatic spring independent suspension for heavy-duty vehicles, which is installed on both sides of the frame of the heavy-duty vehicle and connected to the frame and wheel sets respectively; the feature is that the oil-pneumatic spring The spring independent suspension includes: an oil-pneumatic spring; an upper fixing part, including an upper support of the oil-pneumatic spring connected to the vehicle frame, and the upper support of the oil-pneumatic spring is pivotally connected to the upper lug of the oil-pneumatic spring; a lower fixing connection part, It also includes: a double wishbone connecting bracket fixed on the vehicle frame; an upper cross arm assembly, one end of which is pivotally connected to the double wishbone connecting bracket, the middle is pivotally connected to the lower lug of the oil-pneumatic spring, and the other end The steering knuckle of the wheel set is connected through the upper bushing body and the upper kingpin; the lower cross arm assembly, one end of which is pivotally connected to the double wishbone connecting bracket, and the other end is connected to the wheel through the lower bushing body and the lower kingpin. The steering knuckle of the group; a limit adjustment device, which is fixed on the limit adjustment device fixing frame of the double wishbone connecting bracket, and limits the rotation of the upper wishbone assembly and the lower wishbone assembly.

The oil-pneumatic spring independent suspension described above is characterized in that the limit adjustment device includes a limit screw, which is fixed on the limit adjustment device fixing frame of the double wishbone connecting bracket, and is connected with the upper wishbone assembly. The direction of rotation is opposite, and it plays the role of lower limit.

The oil-pneumatic spring independent suspension above is characterized in that the limit adjustment device includes a limiter, which is fixed on the limit adjustment device fixing frame of the double wishbone connecting bracket, and is connected with the lower wishbone assembly. The direction of rotation is opposite, and it plays the role of upper limit.

The oil-gas spring independent suspension described above is characterized in that the stopper includes a bottom plate and a stopper rubber block, and the stopper is fixed on the connecting plate of the fixing frame of the limit adjustment device through the bottom plate and fixing bolts .

The oil-gas spring independent suspension described above is characterized in that the joint bearing of the upper lug of the oil-gas spring is connected with the through hole of the upper bracket of the oil-gas spring through a pin shaft, and the joint bearing of the lower lug of the oil-gas spring is connected with a pin shaft It is connected with the through hole in the middle part of the upper cross arm assembly.

In order to better achieve the above object, the utility model also provides a heavy-duty vehicle, including a cab, a vehicle frame, wheels, other chassis components, and an oil-pneumatic spring independent suspension connecting the vehicle frame and the wheel set, and the wheels are fixed On the wheel set, it is characterized in that the oil-pneumatic spring independent suspension includes: an oil-pneumatic spring; an upper fixing part includes an oil-pneumatic spring upper bracket connected to the vehicle frame, and the oil-pneumatic spring upper bracket is pivotally connected to the The upper lug of the above-mentioned oil and gas spring; the lower fixed connection part also includes: a double wishbone connecting bracket fixed on the vehicle frame; an upper cross arm assembly, one end of which is pivotally connected to the double wishbone connecting bracket, and the middle pivot Connected to the lower lug of the oil and gas spring, the other end is connected to the steering knuckle of the wheel set through the upper bushing body and the upper kingpin; the lower cross arm assembly, one end of which is pivotally connected to the double wishbone connecting bracket, and the other end Connect the steering knuckle of the wheel set through the lower shaft sleeve body and the lower kingpin; a limit adjustment device is fixed on the limit adjustment device fixing frame of the double wishbone connecting bracket, and limits the upper wishbone assembly and Rotation of the lower wishbone assembly.

The above-mentioned heavy-duty vehicle is characterized in that the limit adjustment device includes a limit screw, which is fixed on the limit adjustment device fixing frame of the double wishbone connecting bracket, and is opposite to the rotation direction of the upper cross arm assembly. , which acts as a lower limit.

The above-mentioned heavy-duty vehicle is characterized in that the limit adjustment device includes a limiter, which is fixed on the limit adjustment device fixing frame of the double wishbone connecting bracket, and is opposite to the rotation direction of the lower wishbone assembly. , which acts as an upper limit.

The above-mentioned heavy-duty vehicle is characterized in that the limiter further includes a bottom plate and a limit rubber block, and the limiter is fixed on the connecting plate of the fixing frame of the limit adjustment device through the bottom plate and fixing bolts.

The above-mentioned heavy-duty vehicle is characterized in that the joint bearing of the upper lug of the oil-gas spring is connected with the through hole of the upper bracket of the oil-gas spring through a pin shaft, and the joint bearing of the lower lug of the oil-gas spring is connected with the through-hole of the oil-gas spring upper lug through a pin shaft. Through-hole connection in the middle of the upper wishbone assembly.

The utility model has the following effects: 1. After adopting the independent suspension form, the beating of the left and right wheels has no direct mutual influence, which can reduce the inclination and vibration of the vehicle body; at the same time, it occupies less lateral space and is convenient for the arrangement of other systems. 2. The independent suspension lowers the position of the center of mass of the vehicle, which helps to improve the driving stability of the vehicle and facilitates steering of the driving wheels. 3. When driving on uneven roads, the double-wishbone oil-pneumatic spring independent suspension can keep the wheels in good contact with the road, thus improving the handling stability, passing capacity and carrying capacity of the vehicle during driving.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 is a side view of a four-axle automobile that adopts the utility model;

Fig. 2 is a side view of the utility model;

Fig. 3 is a rear view of the utility model;

Fig. 4 is the utility model A-A sectional view;

Fig. 5 is the utility model B-B sectional view;

Fig. 6 is the utility model C-C sectional view;

Fig. 7 is a D-D sectional view of the utility model.

Among them, reference signs

1 oil and gas spring 2 lower pin shaft

3 Upper wishbone assembly 4 Limiter

5 lower wishbone assembly 6 pin shaft

7 Upper pin shaft 8 Oil and gas spring upper bracket

9 Double wishbone connecting bracket 10 Limit screw

11 Frame 12 Limiter Bolts

13 Limiting rubber block 14 Connecting plate

15 cotter pins 16 cotter pins

17 Drive axle 18 Steering knuckle

19 wheel set 21 upper shaft sleeve body

22 lower shaft sleeve body 24 upper kingpin

26 under Kingpin

28, 30, 31, 32 wheels

33 fuel tanks 34 cargo boxes

35 cab 41 floor

91 limit adjustment device fixing frame

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present utility model are specifically described:

Fig. 1 is a side view of a four-axle automobile adopting the utility model; Fig. 2 is a side view of the utility model;

Fig. 3 is a rear view of the utility model; Fig. 4 is a sectional view of A-A of the utility model; Fig. 5 is a sectional view of B-B of the utility model; Fig. 6 is a sectional view of C-C of the utility model; Fig. 7 is a sectional view of D-D of the utility model.

Shown in Fig. 1, adopt the four-axle heavy-duty vehicle of the present utility model, comprise cab 35, vehicle frame 11, container 34, fuel tank 33 and wheel 28,30,31,32; Wheel is fixed on the wheel group 19.

The left and right sides of each drive axle 17 are respectively installed on a set of suspension devices that act independently on the vehicle frame of a heavy-duty vehicle. The upper cross arm assembly 3 , the lower cross arm assembly 5 , the lower fixed connection part composed of the double cross arm connecting bracket 9 , and the limit adjustment device composed of the limiter 4 and the limit screw 10 .

The upper bracket 8 of the oil-gas spring and the connecting bracket 9 of the double wishbone are fixed on the vehicle frame 11 by welding; the upper bracket 8 of the oil-gas spring has a round hole, and the oil-gas spring 1 passes through the upper pin 7 at the joint bearing of the upper lug and the oil-gas The round holes of the spring upper bracket 8 are connected, and the end of the upper pin shaft 7 is equipped with a cotter pin 15 to prevent the upper pin shaft 7 from slipping out. The oil-gas spring 1 can rotate around the oil-gas spring upper bracket 8 through the upper pin shaft 7; the upper cross arm assembly 3 There are three round holes on the top, one end is used to connect the double wishbone connecting bracket 9, and the other end is used to connect the upper bushing body 21, the upper bushing body is connected with the steering knuckle 18 through the upper king pin 24, and the oil-gas spring is supported under it. The joint bearing of the lug is connected to the middle hole of the upper cross arm assembly 3 through the lower pin shaft 2, and the oil-gas spring 1 can rotate around the upper cross arm assembly 3 through the lower pin shaft 2; One end is used to connect the double wishbone connecting bracket 9, and the other end is used to connect the lower bushing body 22, and the lower bushing body is connected with the steering knuckle 18 through the upper king pin 24, and the double wishbone connecting bracket 9 is also marked with a circle hole, the upper cross arm assembly 3 and the lower cross arm assembly 5 are respectively connected to the double wishbone connecting bracket 9 through two pin shafts 6 at the round holes, and can rotate around the pin shaft, and the end of the pin shaft 6 is equipped with a cotter pin 16 , to prevent the pin shaft 6 from slipping out; the limiter 4 is composed of a bottom plate 41 and a limit rubber block 13, and is connected to the limit adjustment device fixing frame 91 through a bolt 12, and the limit screw 10 is directly connected to the limit adjustment device fixing frame 91 The pre-drilled threaded holes are connected to limit the rotation of the upper cross arm assembly and the lower cross arm assembly. After the suspension is installed, according to the empty and full load state of the vehicle, the oil and gas of the oil and gas spring are adjusted to achieve the purpose of adjusting the height of the frame. When the vehicle is running, the upper cross arm assembly 3 and the lower cross arm assembly 5 bear the longitudinal force and lateral force generated by the vehicle. The vertical impact force of the road on the wheels is transmitted to the oil-pneumatic spring through the upper and lower cross-arm assemblies, and the oil-pneumatic spring rotates around the pin shaft of the upper bracket of the oil-pneumatic spring. At the same time, the length of the oil-pneumatic spring changes and the internal gas volume also changes. , so as to absorb and release energy, play the role of vibration reduction and buffering. Finally, the oil-pneumatic spring transmits the damped and buffered force to the upper bracket of the oil-pneumatic spring. The optimized design of the new double wishbone structure can realize the smallest change in the inclination angle of the kingpin and the lateral displacement of the wheel contact point when the wheel jumps up and down, thereby improving the handling stability of the vehicle.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (10)

1, a kind of hydro-pneumatic spring independent suspension that is used for heavy motor vehicle is installed on the vehicle frame both sides of described heavy motor vehicle, connects vehicle frame and wheels respectively; It is characterized in that described hydro-pneumatic spring independent suspension comprises:

One hydro-pneumatic spring;

Fixed part on one comprises and described vehicle frame bonded assembly hydro-pneumatic spring upper bracket that described hydro-pneumatic spring upper bracket articulates the upper journal of described hydro-pneumatic spring;

Captive joint portion once comprises again:

The a pair of transverse arm connects support, is fixed on the described vehicle frame;

One Top Crossbeam assembly, one end articulate described pair of transverse arm and connect support, and the centre is articulated in the down journal of described hydro-pneumatic spring, and the other end is connected the steering swivel of described wheels by Upper shaft sleeve body and last stub;

One lower cross arm assembly, one end articulate described pair of transverse arm and connect support, and the other end is connected the steering swivel of described wheels by lower shaft body and following stub;

One means for adjusting limit of movement is fixed on described pair of transverse arm and connects on the means for adjusting limit of movement fixed mount of support, places restrictions on the rotation of described Top Crossbeam assembly and lower cross arm assembly.

2, hydro-pneumatic spring independent suspension according to claim 1, it is characterized in that described means for adjusting limit of movement comprises a stop screw, be fixed on described pair of transverse arm and connect on the means for adjusting limit of movement fixed mount of support, relative with the rotation direction of described Top Crossbeam assembly, play the lower limit effect.

3, hydro-pneumatic spring independent suspension according to claim 1, it is characterized in that described means for adjusting limit of movement comprises a limiting device, be fixed on described pair of transverse arm and connect on the means for adjusting limit of movement fixed mount of support, relative with the rotation direction of described lower cross arm assembly, play the upper limit effect.

4, hydro-pneumatic spring independent suspension according to claim 3 is characterized in that, described limiting device comprises base plate, spacing rubber block again, and described limiting device is fixed on the connecting panel of described means for adjusting limit of movement fixed mount by base plate and bolt of rear end plate.

5, hydro-pneumatic spring independent suspension according to claim 1, it is characterized in that, the oscillating bearing of described hydro-pneumatic spring upper journal is connected by the through hole of bearing pin with described hydro-pneumatic spring upper bracket, and the oscillating bearing of described hydro-pneumatic spring down journal is connected with described Top Crossbeam assembly middle part through hole by bearing pin.

6, a kind of heavy motor vehicle comprises operator's compartment, vehicle frame, wheel, other vehicle chassis components and the hydro-pneumatic spring independent suspension that connects described vehicle frame and wheels, and described wheel is fixed on the wheels, it is characterized in that, described hydro-pneumatic spring independent suspension comprises:

One hydro-pneumatic spring;

Fixed part on one comprises and described vehicle frame bonded assembly hydro-pneumatic spring upper bracket that described hydro-pneumatic spring upper bracket articulates the upper journal of described hydro-pneumatic spring;

Captive joint portion once comprises again:

The a pair of transverse arm connects support, is fixed on the described vehicle frame;

One Top Crossbeam assembly, one end articulate described pair of transverse arm and connect support, and the centre is articulated in the down journal of described hydro-pneumatic spring, and the other end is connected the steering swivel of described wheels by Upper shaft sleeve body and last stub;

One lower cross arm assembly, one end articulate described pair of transverse arm and connect support, and the other end is connected the steering swivel of described wheels by lower shaft body and following stub;

One means for adjusting limit of movement is fixed on described pair of transverse arm and connects on the means for adjusting limit of movement fixed mount of support, places restrictions on the rotation of described Top Crossbeam assembly and lower cross arm assembly.

7, heavy motor vehicle according to claim 6, it is characterized in that described means for adjusting limit of movement comprises a stop screw, be fixed on described pair of transverse arm and connect on the means for adjusting limit of movement fixed mount of support, relative with the rotation direction of described Top Crossbeam assembly, play the lower limit effect.

8, heavy motor vehicle according to claim 6, it is characterized in that described means for adjusting limit of movement comprises a limiting device, be fixed on described pair of transverse arm and connect on the means for adjusting limit of movement fixed mount of support, relative with the rotation direction of described lower cross arm assembly, play the upper limit effect.

9, heavy motor vehicle according to claim 8 is characterized in that, described limiting device comprises base plate, spacing rubber block again, and described limiting device is fixed on the connecting panel of described means for adjusting limit of movement fixed mount by base plate and bolt of rear end plate.

10, heavy motor vehicle according to claim 6, it is characterized in that, the oscillating bearing of described hydro-pneumatic spring upper journal is connected by the through hole of bearing pin with described hydro-pneumatic spring upper bracket, and the oscillating bearing of described hydro-pneumatic spring down journal is connected with described Top Crossbeam assembly middle part through hole by bearing pin.

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