CN101327735A - Balance swing arm drive axle and driving vehicle - Google Patents

Abstract

The invention discloses a balanced swing arm type drive axle and a driving vehicle, comprising a main drive axle, two ends of the main drive axle are respectively connected with swing arms, the middle part of the swing arm is hinged with the main drive axle, and the two ends of the swing arm are connected with The drive wheel is equipped with a deceleration device in the swing arm. The drive wheel of the deceleration device is connected to the half shaft of the main drive axle, and the two driven wheels are respectively arranged at both ends of the swing arm. Wheel reducers transmit power to the drive wheels. It can make the vehicle keep the center of gravity of the axle with a small change when passing through the complex road surface, the driving force is large, and the adaptability to the complex ground is strong. It can be applied to various forest operating vehicles, agricultural wheeled tractors, engineering loaders, off-road vehicles, etc.

Description

Balance swing arm drive axle and driving vehicle

technical field

The invention relates to a drive axle of a traveling vehicle, in particular to a balanced swing arm type drive axle and a traveling vehicle.

Background technique

The drive axle is mainly used on the power output axles of various motor vehicles, and drives the wheels to rotate with power to drive the vehicle; generally, one or two wheels are installed at both ends of an axle. For example, one wheel is installed at both ends of the drive axle of agricultural wheeled tractors and engineering loaders, and two wheels are often installed side by side at both ends of the drive axle of freight cars and passenger cars. Its basic structure includes: final reducer, differential, half shaft and axle housing. The torque of the wheel rotation is driven by the final drive, differential and half shaft inside the axle housing; while the vehicle load is borne by the axle housing.

In the prior art, for heavy-duty vehicles, if the single-axis support strength is insufficient, there are also two shafts driven in parallel. The two shafts (often called "bridges" for power transmission inside the support beam) are basically the same structure, forming 4-8 wheel drive.

There are at least the following disadvantages in the above-mentioned prior art:

In off-road driving, for single-axle drive axles, the driving force of the wheels to the ground is insufficient, and the ability of the vehicle to pass through the field surface is poor; for side-by-side double-axle drive axles, the adaptability of the two rows of axles to the ground is poor. In complex terrain, the two axles twist each other, causing large deformation and complex stress. In addition, whether it is a single-axle or double-axle-driven vehicle, when the wheels cross an obstacle, the height of the center of gravity of the supporting end of the axle will be raised accordingly and at least reach the same height as the obstacle, so that the center of gravity of the axle will change greatly, which will It directly affects the passability, smoothness and fuel economy of the off-road driving of the vehicle.

Contents of the invention

The purpose of the present invention is to provide a balanced swing arm drive axle and a driving vehicle with large driving force and strong adaptability to complex ground.

The purpose of the present invention is achieved through the following technical solutions:

The balanced swing arm type driving axle of the present invention comprises a main driving axle, the two ends of the main driving axle are respectively connected with swing arms, the middle part of the swing arm is hinged with the main driving axle, and the two ends of the swing arms are respectively connected There are drive wheels.

A traveling vehicle according to the present invention is provided with the above-mentioned balanced swing arm drive axle.

As can be seen from the technical solution provided by the present invention above, in the balanced swing arm drive axle and the driving vehicle described in the present invention, since the two ends of the main drive axle are respectively connected with swing arms, and the middle part of the swing arm is hinged with the main drive axle, The two ends of the swing arm are respectively connected with driving wheels. Large driving force and strong adaptability to complex ground.

Description of drawings

Fig. 1 is the transmission schematic diagram of the balanced swing arm type drive axle of the present invention;

Fig. 2a is a schematic diagram of the height change of the frame of the single-axle vehicle passing through obstacles in the prior art;

Fig. 2b is a schematic diagram of the height change of the vehicle frame when the vehicle with the balanced swing arm drive axle of the present invention passes through obstacles.

Detailed ways

The balanced swing arm type drive axle of the present invention, its preferred embodiment is as shown in Figure 1, comprises main drive axle, and the two ends of main drive axle are respectively connected with swing arm, and the middle part of swing arm is hinged with main drive axle, The two ends of the swing arm are respectively connected with driving wheels.

The main drive axle includes a main drive axle housing 4, and the main drive axle housing 4 is provided with a main reduction device, which includes a small bevel gear 1, a large bevel gear 2, a differential 3, etc., and the driving force is transmitted to the Half shaft 9.

Swing arm comprises swing arm shell 5, is provided with deceleration device inside, and deceleration device comprises driving wheel 6, two driven wheels 7, and driving wheel 6 is connected with half shaft 9 of main driving axle, and two driven wheels 7 are respectively connected with two sides of swing arm. The drive wheel (not shown) at the end is connected. The driving force is transmitted to the driving wheel through the axle shaft 9, the driving wheel 6 and the driven wheel 7, so as to drive the vehicle to travel.

A transmission chain, a transmission gear or other transmission components can be respectively connected between the driving wheel 6 and the two driven wheels 7, and the power transmission can be realized through chain transmission, gear transmission or other transmission modes.

The two ends of the swing arm can be connected with the driving wheel through the wheel side reducer 8 respectively. The wheel reducer 8 can be a gear reducer, a planetary reducer or other reducers. The driving force of the driven wheel 7 is transmitted to the driving wheel through the wheel side reducer 8 .

The swing arm housing 5 can be arc-shaped with a high middle part and low ends, and the middle part of the swing arm housing 5 is hinged with the main drive axle housing 4 .

A traveling vehicle according to the present invention is provided with the above-mentioned balanced swing arm drive axle. The traveling vehicle may be a forestry working vehicle, an agricultural wheeled tractor, an engineering loader or an off-road vehicle, or other traveling vehicles.

In the present invention, through the special structure of installing a longitudinally swinging balance arm at both ends of the drive axle, the wheels installed at the end of the balance arm can keep the axle with a small center of gravity change during obstacle surmounting; thus, the vehicle can be guaranteed It is more stable during driving, reduces the change of the center of gravity, reduces energy consumption, and improves the passability, ride comfort and fuel economy of the vehicle. Changed the basic structure that the single drive axle can only install the wheels side by side, so that the single drive axle can realize the longitudinally arranged double-wheel drive, and improve the passing capacity of the single-axle drive of the vehicle; and improve the shortcomings of the poor adaptability to the ground when the double-row axles are installed side by side , the special structure of single bridge plus longitudinal balance swing arm is adopted to solve the disadvantages caused by the twisting problem of double bridges passing through complex terrain.

The invention is mainly composed of a main drive axle, a balance swing arm and a planetary wheel side reducer. A drive wheel is installed on each wheel-side reducer. When the vehicle is running on uneven ground, the balance swing arm can swing with the support beam of the main drive axle as the axis, and realize the unilateral longitudinal double-wheel support drive.

The transmission principle of the present invention is: the large bevel gear 2 is driven by the small bevel gear 1, the power is distributed to the half shaft 9 through the differential device 3, and the driving wheel 6 of the swing arm is driven, and the driven wheel 7 of the swing arm is driven by the transmission chain 10, Finally, it is output to the drive wheel (not shown in the figure) by the wheel speed reducer 8.

In the present invention, uniaxial input drives 4 discrete driving wheels, and these 4 driving wheels are arranged longitudinally in pairs to improve ground traction. The two driving wheels on each side can swing in balance with the swing arm, so as to realize the profiling driving with the field ground. This driving mode can improve the passability, driving stability and ride comfort of the vehicle.

Specifically as shown in Fig. 2a and Fig. 2b, when the single-axle vehicle in the prior art passes through obstacles, the height of its frame changes is h; The height change of the center of gravity is only h/2. From this, it can be clearly seen that the center of gravity height of the swing arm type balance vehicle frame has a small fluctuation, so that the vehicle's traffic energy consumption is reduced, the driving comfort is improved, and the swing arm is bent downward to increase the ground clearance. The power transmission in the swing arm can be driven by a roller chain and a sprocket, and the structure is simple, easy to implement and practical.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention.

Claims (10)

1, a kind of balance oscillating arm type drive axle comprises main drive axle, it is characterized in that, the two ends of described main drive axle are connected with swing arm respectively, and the middle part of described swing arm and main drive axle are hinged, and the two ends of described swing arm are connected with drive wheel respectively.

2, balance oscillating arm type drive axle according to claim 1, it is characterized in that, be provided with speed reduction gearing in the described swing arm, described speed reduction gearing comprises driving wheel, two flower wheels, described driving wheel is connected with the semiaxis of described main drive axle, and described two flower wheels are connected with the drive wheel at described swing arm two ends respectively.

3, balance oscillating arm type drive axle according to claim 2 is characterized in that, is connected with driving chain respectively between described driving wheel and described two flower wheels.

4, balance oscillating arm type drive axle according to claim 2 is characterized in that, is connected with transmission gear respectively between described driving wheel and described two flower wheels.

5, balance oscillating arm type drive axle according to claim 1 is characterized in that, the two ends of described swing arm are connected with described drive wheel by wheel reduction gear respectively.

6, balance oscillating arm type drive axle according to claim 5 is characterized in that, described wheel reduction gear is a gear reducer.

7, balance oscillating arm type drive axle according to claim 5 is characterized in that, described wheel reduction gear is a planet wheel decelerator.

8, balance oscillating arm type drive axle according to claim 1 is characterized in that, the housing middle part of described swing arm is high, two ends are low is arc, and the housing of described swing arm and the housing of described main drive axle are hinged.

9, a kind of driving vehicle is characterized in that, this driving vehicle is provided with each described balance oscillating arm type drive axle of claim 1 to 8.

10, driving vehicle according to claim 9 is characterized in that, this driving vehicle is a woods with working truck, agricultural wheeled tractor, engineering with loader or cross country car.

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