JPS584675A - Driving system for service car - Google Patents

Abstract

PURPOSE:To enable an operator to drive a service car smoothly eve on an undulated site, by making the rear wheel driving axle rockable in both crosswise and lengthwise directions. CONSTITUTION:Six wheels, two wheels 6a and four wheels 6b, are arranged in parallel respectively in the longitudinal direction at both sides of a car body frame 5, of which only two wheels 6a located at the forward end of the car body are connected in shafting to the car body 5 and axles of the remaining four wheels are secured at the front and rear ends of a setting member 9 being supported rockably crosswise by means of a shaft P2, and they are so supported as to be rockable in both directions by means of a shaft P3, on the other hand. Therefore, these four wheels 6b are able to be rockable crosswise and lengthwise in centering on shafts P2 and P3 so tht the service car can be driven even at an undulated site in a smooth manner.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a traveling device for a work vehicle in which three wheels are installed on each of the left and right sides of one machine body in the longitudinal direction K11l of the machine body, and by modifying the electric material structure of the wheels to a rational one, To enable a machine to be supported in a stable state with little back-and-forth and side-to-side sway even on uneven ground, and to be able to run in a state with little vertical vibration.

Next, one embodiment of the present invention will be described based on illustrative drawings.

As shown in Fig. 1, a driving unit 11+ and an original IFI s(!l) are installed in parallel on the left and right at the front of the aircraft body having a wheeled traveling device, and a loading platform (3
) is provided so as to be able to swing vertically around the circumference of the axis 9 using a fluid pressure cylinder (4), thereby configuring a transport vehicle that is capable of dumping the cargo platform (3).

The traveling device Fi is constructed as shown in FIGS. 2 to 4.

In other words, three wheels (6ml), (6b), (6b) are placed side by side on the left and right sides of one body frame (6) in the backward direction of body movement, and these six wheels (6m), (6b),
・The left and right ones located at the front end of the aircraft (43a),
(841) can be freely attached to the front ε fuselage frame (II K times only).

Of the remaining four wheels (6b), install the left and right ones located at the front end of the aircraft using the $1111 wheel mounting member (
)) are placed on both the left and right ends of the rCIIL, which can be rotated freely in the 9 state, and the left and right ones located at the rear end of the fuselage are attached to the second wheel mounting member (11 on both the left and right ends of the rCIIL).
IE, attach the rotatable Kll in the state that it is placed, and then shake the left and right middle part of the first wheel mounting member (1) described in eIJ up and down with the above-mentioned fuselage frame full) The 9th and 3rd wheel ordering members + 11 swinging shafts (p-pivotally connected to the free end located on the front end side by a connecting shaft that develops the longitudinal axis of the fuselage) can be freely moved forward. Then, the left and right intermediate portions of the second wheel attachment member (8) are connected to the third wheel attachment member to+.
It is pivotally connected to the end of the road located on the rear end side of the swinging wheels 8 by a connecting shaft having an axis of longitudinal direction of the fuselage.
The four wheels (6b) on the rear end side of Tsumudan 1 aircraft are jl
lf3 wheel right member (relative to the season, the left and right ones move up and down in an echoing manner around 111) By attaching it in front and rear parts, it is possible to stably support the entire aircraft even on smooth ground or rough ground (1 aircraft frame + 1).
KjE attachment is to be carried out at the grounding points of Yoshitomo's right wheels (6m) and (6m), respectively, and at the position corresponding to the intersection of the horizontal axis and the forward axis. Furthermore, the front and rear wheels of the rear end side four wheels (6b) @ move up and down resonantly and integrally around the swing axis curvature of the third wheel mounting member (9), thereby raising and lowering the ground. This is to ensure that the vertical displacement of the aircraft body due to unevenness is carried out in a state in which it smoothly follows the unevenness of the ground.

In addition, a hydraulic motor and a device for decelerating and transmitting the rotational force of this motor to the wheels (set) are attached to each of the six wheels (6m) and (6b), and the left wheel group An operator (l1m) who integrally drives and stops the three hydraulic motors of An operator (llb) is installed in the driving section +11, and hydraulically drives all the wheels (6s, (6b)...
b) A turning operation of one aircraft is performed by an alternative stop operation of the left and right wheel groups by K.

In constructing the traveling device, the left and right wheels on the rear end side of the aircraft body among the six wheels may be attached to the aircraft body, and the four wheels on the front end side may be configured to be able to move up and down relative to the aircraft body.

The above traveling device is applicable to various work vehicles such as backhoes.

In summary, one aspect of the present invention is that, in the above-mentioned traveling device for a work vehicle, among the wheels (6m) and (6b), the left and right wheels (6) are located at one end of the front and back of the machine body.

(6a) is attached to the above-mentioned fuselage, and the remaining four wheels (6...) are attached to the above-mentioned fuselage with a horizontal axle and a scrap p so that they can be freely raised and lowered.

With the left and right - moving up and down resonantly and integrally around the center of the longitudinal axis of the aircraft, the - after n is moved forward and backward of the swing axis - of the wheel mounting member (9). It is characterized by being installed in a separate form.

*According to the above configuration, the four wheels (6b) and φ attached to the wheel mounting member (11) swing back and forth and left and right according to the unevenness of the ground. The three points at which one aircraft is stably supported, namely the left and right wheels (6a) and (6a) attached to one aircraft, the horizontal axis 19 and the longitudinal axis (the intersection of the two It will be done.

It has become possible to suppress the vibration of the aircraft as much as possible.

In addition, as shown in Fig. 6, if all wheels are fixed to the aircraft body, the trajectory of the aircraft center of gravity (4) as the aircraft moves forward (2)
is on the ground (the shape of &l is very interesting, but 1
In the case of the present invention.

Four wheels (6b) attached to the wheel attachment member (9)...
The front and rear parts move up and down resonantly and integrally around the pivot axis curvature of the wheel mounting member (9).

As shown in FIG.

In other words, the vertical displacement of the aircraft due to irregularities in the longitudinal direction of the aircraft is now carried out in a state in which it smoothly follows the unevenness of the ground, making it possible to suppress the vertical vibration of the aircraft.
As a whole, it has become possible to run the machine with less rocking and vibration, even on uneven ground, and to perform one task safely and with less driving fatigue.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the traveling device for a working vehicle according to the present invention, and FIG. 1 is an overall side view of the transport vehicle. Fig. 2 is a plan view of the wheel mounting part, Fig. 3 is a side view fg of the wheel mounting part, Fig. 4 is a cross-sectional view taken along the arrow in Fig. 3, and Fig. 5 is a schematic diagram of the state of running on rough terrain. , FIG. 6 is a schematic diagram of a conventional structure running on rough terrain. (6m), (6b)...Wheel, (9)...Wheel mounting member. ((9... shaft core. Figure 1 Figure 2

Claims (1)

[Claims] A traveling device for a working vehicle in which three wheels C6m) and C6b) are arranged in parallel in the longitudinal direction of the body on each of the left and right sides of the body, and one of the wheels (6m) and (6b) is located at one end of the body in the front and rear. Attach the left and right ones (6m) and (6M) to the aircraft,
The remaining four wheels (6b) are attached to the nine-wheel attachment member 191, and the left and right wheels are attached to the fuselage front and rear wheels. In a state where the shaft core is moved up and down resonantly and integrally, the parts around 1 and 1 are placed on the front and rear of the IIIF1 shaft (11) of the wheel mounting member (-). Features a traveling device for work vehicles.