JPS6035677A - Travel system - Google Patents

Abstract

PURPOSE:To enable motion even in a limited space by making all wheels streerable/drivable independently. CONSTITUTION:Hydraulic motor 73 of each wheel is rotated to rotate the case 43 horizontally through warm 71, warm wheel 67 and shaft 63 while each wheel 25, 27, 39, 41 is brought to back/fro position then the hydraulic motor 47 for each wheel is rotated forward or rearward to travel the oil feed table back or fro. When directing all of four wheels to the side direction in parallel, the truck can be moved to the side direction. While when bringing four wheels to such position as perpendicular with the bending direction at the opposite ends of lateral beams 29, 31, then rotating all wheels in same direction, the truck will rotate as it is around the center of table 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a traveling device used in a transportation cart, a refueling cart, etc., which is used in a narrow space or the like, or which requires accurate stopping position and stopping posture.

Conventionally, this type of traveling device has generally been equipped with two front wheels and two rear wheels, with the front wheels being steered and the rear wheels driving the vehicle. It was designed to shorten the distance between the axes and reduce the turning radius so that it could be used in narrow spaces. With this configuration, it is not possible to turn around the center of the vehicle, and it is not possible to move in an appropriate direction while maintaining the same posture, making it impossible to move in narrow spaces, which may be inconvenient for work. Ta.

The present invention comprises at least three wheels in contact with the ground,
All of the wheels are provided so that they can be steered independently of each other, and each is rotatably driven by power, making it possible to move straight and turn once, making it possible to operate even in narrow spaces. Moreover, without changing your posture,
It is an object of the present invention to provide a traveling device that can move in any direction and that can accurately stop position and posture.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 indicates a refueling truck for supplying fuel to an aircraft, and is constructed as follows. That is, 3 is a support that engages with the outer periphery of a column (not shown) standing upright on the chassis 5 so that it can be raised and lowered, 7 is a workbench that is further supported by the supporter 3 so that it can be raised and lowered, and 9 is a workbench 7. 11 is the engine, and 13 is the lifting and lowering operation of the work platform 7.

An operation table for performing various operations such as traveling operation, 15 is a work table 7
The arm is pivotally attached to a support frame 17 that stands upright in a vertical direction, and holds a connection fitting 21 at the tip of a refueling hose 19, and is moved up and down by the expansion and contraction of a hydraulic cylinder 23. The other end of the refueling hose 19 communicates with a refueling vehicle (not shown).

25. 27 are wheels attached to both ends of the crossbeam 29 that is fixed to the chassis 5, and 31 is the bracket 3 that is fixed to the chassis 5.
3.35 is a crossbeam pivotally connected to the shaft 37 so as to be able to swing vertically, and front wheels: l), 41 are attached to both ends. Rear wheels 25.27. Since the configuration in which the front wheels 39 and 41 are attached to the cross beams 29+31iC is the same, the configuration in which the rear wheels 25 are attached to the cross beams 29 will be explained 1-
Ru. That is, 43 connects the wheel 25 to the bearing 45.45
A hydraulic motor 47 is fixed inside the case, and the drive shaft 49 of the hydraulic motor 47 is connected to the wheels 250 and the axle 53 by splines 51.
is engaged in. The case 43 has a vertical shaft 57 fixed to a bracket 55 fixed to the lower surface of the crossbeam 29, and a vertical shaft 57 fixed to the lower surface of the crossbeam 29.
A vertical worm wheel shaft 63 is rotatably supported by a worm case 61 fixed to the upper surface of the worm case 61 via a bracket 59. The lower end is fixed to the case 43 by bolts 69 and 69. 71 is a worm that engages with the worm wheel 67 and is rotationally driven by a hydraulic motor 73. Hydraulic morphs 47, 73 is engine 110AfJ
It is rotated by the oil pressure of a hydraulic pump (not shown) rotated by K mb, and operates by switching between forward and reverse rotation. The hydraulic morphs 47, 73 may drive the axle 53 via a reduction gear (not shown) as necessary. In addition, the rear crossbeam 29
Both ends of the front crossbeam 31 are bent forward at an angle of 45 degrees, and the four wheels 25.27, 41.39 vertical axis 57
, 57, . . . are arranged to form a regular quadrangle.

In the above embodiment, the hydraulic motors 73 of each wheel are rotated, and the worms 71 . The case 43 is horizontally rotated through the worm wheel 67 and the worm wheel shaft 63, and each wheel 25. 27°39.41, for example, and when the hydraulic motor 47 of each wheel is rotated in the forward or reverse direction, the refueling truck 1 moves straight forward or backward. Moreover, if all four wheels are oriented laterally in parallel, the refueling trolley 1 can be moved laterally. Or, these four wheel crossbeams 29,3
If the wheels are all rotated in the same direction in a posture perpendicular to the bending direction of both ends of the refueling truck 1, the refueling truck 1 will rotate on the spot around the center of the chassis 5. That is, depending on the attitude of each wheel and the forward/reverse direction of rotation, the vehicle 5 can be made to travel in various ways, such as going straight or turning once.

The refueling trolley 1 travels to a position below the wing of the aircraft, raises the work platform 7, connects the connecting fitting 21 to the refueling port provided on the underside of the wing, and supplies fuel from the refueling hose 19. However, in order to align the connection fitting 21 with the position of the fuel filler port of the aircraft, the work cart can be moved freely as described above, so that accurate positioning is possible.

Since the present invention has 46 configurations as described in the claims, it is possible to make nine turns and go straight in the free direction, and it is possible to freely travel even in a narrow place, and also to change the stopping position. It allows for accurate positioning.

In addition, in order to ground all the wheels of the present invention, in addition to balancing the two wheels with a vertically swingable link (the crossbeam 31 in this embodiment) as in the above-mentioned embodiment, some or all of the wheels may be grounded. It may be suspended on the vehicle body via a bullet, or it may have three wheels. Further, the drive of the wheels is not limited to a hydraulic motor, but an electric motor may be used, or the wheels may be mechanically driven by a transmission shaft, gears, etc. from an engine. In addition, two cross beams are installed in parallel in the front and rear, and both ends are 45 mm.
It is not limited to providing the cross beams at a right angle, but the two cross beams may be formed to intersect at right angles in the center.
The method of mounting the wheels is free. In addition, ni3:Ui of the running motion is limited as necessary, and the combination of the directions of each axle in one rotation is set in advance, and the combinations of the directions of each axle are linked by the operation of electricity, hydraulic pressure, etc., and levers, pushbutton switches, etc. If each movement is performed by the operation of , the operation will be made easier.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well. Furthermore, the /T:zuko:] in the claims does not limit the technical scope of the present invention.

[Brief explanation of drawings]

Fig. 1 is a + side view of one embodiment of the present invention, Fig. 2 is a bottom view of the main parts, Figs. 3 and 4 are a side sectional view and a plan view of the main parts, respectively. . (Explanation of symbols representing main parts of drawings) 27, 29
．． 39. 41...Wheel Fig. 1 Fig. 2 Fig. 3 Fig. 4

Claims (1)

[Claims] At least three wheels in contact with the ground 25.27.39.
41, all said wheels 25, 27.39.41
A traveling device characterized in that each of these is provided so as to be independently steerable, and each is provided to be rotationally driven by power.