JPH09254747A - Moving device for working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate climbing over an obstacle by itself by extending a second elevating means while shrinking a first elevating means so as to elevate a vehicle body and extending/shrinking extension means in the rear part and in the front part while extending the second elevating means so as to move the vehicle body forward/ backward in a lifted condition. SOLUTION: While the first elevating means 12 are shrunk, an under carriage 10 is lifted by means of the second elevating means 14 on the right sides and the left sides in the front part and in the rear part. While the under carriage 10 is kept lifted, extension means 13 on the left side and on the right side in the front part are shrunk, and at the same time, extension means 13 on the left side and on the right side in the rear part are extended synchronously with this shrinking action, so that the vehicle body 10 is advanced, and a vehicle body 11 and the first elevating means 12 positioned on the left side and on the right side in the rear part of the vehicle body 11 are positioned in front of an obstacle 4. After the first elevating means 12 are extended so as to be landed while the second elevating means 14 are shrunk, the extension means 13 on the left side and on the right side in the rear part are shrunk, and subsequently, the first elevating means 12 is shrunk, so that the vehicle body 10 is landed. In this way, the vehicle can climb over the obstacle by itself and is moved easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving device for a working machine, and more particularly to a moving device for a working machine capable of overcoming an obstacle such as a hole or a protrusion on the ground by itself.

[0002]

2. Description of the Related Art If there are obstacles such as holes or protrusions on the ground,
The movement of work machines such as truck cranes and hoisting machines has traditionally been
It is done as follows. FIG. 5 is an explanatory diagram of moving over an obstacle when there is an obstacle on the path of the truck crane, and FIG. The iron plate 3 is crossed over, and this iron plate 3
The truck crane 1 is moved by passing over. Further, FIG. 5 (b) shows that when the protrusion 4 is formed on the ground, the iron plate 3 is slanted across both sides of the protrusion 4 and the ground, and the truck crane 1 is moved by passing over the iron plate 3. It is moving.

[0003]

However, FIG.
As shown in (a), when the iron plate 3 is moved over the hole 2 formed in the ground, the iron plate 3 is bent, or the periphery of the hole 3 is soft and the periphery of the hole 3 collapses. There is a risk that the truck crane 1 will fall over. In addition, as shown in FIG.
In the case of straddling and moving the vehicle, it takes time and labor for the erection work, and the iron plate 3 is bent or the slope is steep, which causes a problem that the truck crane 1 cannot get over the projection. Therefore, an object of the present invention is to provide a moving device for a working machine that can easily move over an obstacle formed on the ground by itself.

[0004]

In order to achieve the above object, the present invention is a moving device for a working machine, which is provided on each of the front, rear, left and right sides of the body of the working machine, and expands and contracts in the vertical direction so as to extend the body of the working machine. First elevating means for elevating and lowering, front and rear expanding and contracting means provided front and rear of the vehicle body so as to be expandable and contractible in the front and rear direction, respectively When the second elevating means is expanded and contracted while the front and rear elongating means and the second elevating means are contracted with the first elevating means, the vehicle body is moved up and down, and the second elevating means is moved. It is characterized in that when the front and rear expansion / contraction means are expanded / contracted in the extended state, the vehicle body is moved forward / backward in a lifted state.

Further, according to the present invention, the front and rear expansion / contraction means are
While the vehicle body is being lifted by the second elevating means, the other expanding and contracting means is contracted in synchronization with the expanding operation of one expanding and contracting means, and the other expanding and contracting means is synchronized with the contracting operation of one expanding and contracting means. It is characterized in that it is configured to be expanded. Further, the present invention is characterized in that the working machine is a truck crane. Also, the present invention
The first elevating means is constituted by an outrigger mounted on the vehicle body.

According to the present invention, the work machine moves above the obstacle by the expansion and contraction operations of the first and second elevating means and the front and rear expansion means.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention applied to a truck crane will be described. FIG. 1 shows a side view of a truck crane equipped with a traveling device according to the present invention. Reference numeral 9 is a truck crane, 10 is its vehicle body, 10A is wheels for traveling, 11 is a traveling device according to the present invention, and the traveling device 11 includes a first elevating means 12, front and rear expanding and contracting means 13, a second elevating means 14 and the like. It is composed of.

The first elevating means 12 are provided on the front, rear, left and right of the vehicle body 10 and extend and contract in the up and down direction to raise and lower the vehicle body 10. In the embodiment, outriggers including hydraulic cylinders are provided on the front, rear, left and right sides of the vehicle body 10. In the embodiment, the first trigger is provided by these outriggers.
Elevating means 12 is configured.

The front and rear expansion / contraction means 13 are provided on the front left and right sides and the rear left and right sides of the vehicle body 10, respectively. Each of the expansion / contraction means 13 extends in the front-rear direction and is slidably incorporated into each other.
The multi-stage hydraulic cylinder is disposed inside or outside 7 and the beam body 17 is expanded and contracted in the front-rear direction by the operation of the multi-stage hydraulic cylinder. The shape of the beam body 17 is not limited to a rectangular cross section, and may be arbitrary.
The structure for expanding and contracting may be a conventionally known structure such as a pinion or a rack mechanism, and is not limited to a multistage hydraulic cylinder.

The second elevating means 14 is provided at the tip of each beam 17. The second lifting means 14 is the first lifting means 1
Similar to the first embodiment, it is composed of a hydraulic cylinder and the like.

Next, a case where the truck crane 9 equipped with such a traveling device 11 gets over an obstacle will be described. First, as shown in FIG. 2A, the truck crane 9 is stopped before the protrusion 4 (or the hole 2) which is an obstacle. Next, as shown in FIG. 2B, the first elevating means 12 is extended to lift the vehicle body 10 from the ground.

Next, as shown in FIG. 2 (c), the expansion means 13 on the left and right of the front part are extended. Next, as shown in FIG. 2D, the second elevating means 14 at the tip of each expansion / contraction means 13 is extended and grounded. Next, the first elevating means 12 is contracted, and the chassis 11 is lifted by the second elevating means 14 on the front, rear, left and right.

Next, as shown in FIG. 3A, the front left and right expansion means 13 are contracted, and at the same time, the rear left expansion means 13 are expanded in synchronization with this contraction operation to move the vehicle body 10 from the ground. The vehicle body 11 and the vehicle body 1 are moved forward while being lifted.
1 the first lifting means 12 located on the left and right of the rear part of the projection 4
(Or hole 2). Next, FIG.
As shown in, the first elevating means 12 is extended and grounded,
After contracting the second elevating means 14, the rear right and left expansion / contraction means 13 are contracted, and then the first elevating means 12 is contracted,
The vehicle body 10 is landed as shown in FIG.

Therefore, according to this embodiment, the iron plate 3 or the like is bridged over the projection 4 (or the hole 2) by the expansion and contraction operations of the first and second elevating means 12 and 14 and the front and rear expansion and contraction means 13. Instead, the protrusion 4 (or the hole 2) can be easily moved over by itself.

In the above embodiment, the front and rear expansion / contraction means 13 are used.
Although the case has been described in which the protrusion 4 (or the hole 2) is moved over by one expansion and contraction operation, when the protrusion 4 (or the hole 2) is crossed over by two expansion and contraction operations, the front and rear expansion and contraction means is moved. The stroke of 13 can be made short. That is, as shown in FIG. 4A, the first elevating means 12 is extended to lift the vehicle body 10 from the ground. Next, as shown in FIG. 4B, the front left and right expansion and contraction means 13 are extended, and then the front, rear, left and right second elevating means 14 are extended and grounded. Next, the first lifting means 1
2 is reduced and the chassis 11 is lifted by the second elevating means 14 on the front, rear, left and right. Next, the front left and right expansion / contraction means 13
And at the same time, the rear left and right expansion / contraction means 13 are extended in synchronization with this reduction operation, and the vehicle body 10 is moved forward while being lifted from the ground. As shown in FIG.
Is located above the protrusion 4 (or the hole 2), and
The front, rear, left and right first elevating means 12 are respectively positioned in front of and behind the protrusion 4 (or the hole 2).

Next, the first elevating means 12 is extended and grounded, the second elevating means 14 is contracted, then the rear left and right expansion / contraction means 13 are contracted, and as shown in FIG. The vehicle body 10 is lifted above the protrusion 4 (or the hole 2) by the elevating means 12. Then, by performing such an operation once again, as shown in FIG. 3C, it is possible to move over the protrusion 4 (or the hole 2). According to such a moving method, since the projections 4 (or the holes 2) are overcome by the two expansion and contraction operations of the front and rear expansion and contraction means 13, the stroke of the front and rear expansion and contraction means 13 can be shortened. The expansion / contraction means 13 can be made compact.

[0017]

As is clear from the above description, the present invention
A moving device for a working machine, comprising first elevating means provided on the front, rear, left, and right of the body of the working machine for vertically expanding and contracting to raise and lower the body of the working machine, respectively. Front and rear expansion and contraction means provided as possible,
The front and rear expansion and contraction means are provided with second elevating and lowering means respectively provided at the front and rear ends thereof so as to be expandable and contractible in the vertical direction, and the front and rear elongating and contracting means and the second elevating and lowering means are in a state in which the first elevating means is contracted, When the second elevating means is expanded and contracted, the vehicle body is moved up and down. When the second elevating means is extended and the front and rear expansion and contraction means are expanded and contracted, the vehicle body is moved forward and backward. There is. Therefore, even if there is an obstacle such as a hole or a protrusion formed on the ground, the work machine can be expanded and contracted by the first and second elevating means and the front and rear expanding and contracting means without extending the iron plate or the like. Can move above the obstacle while being lifted above the obstacle, and therefore can easily get over the obstacle by itself and move.

[Brief description of drawings]

FIG. 1 is a side view of a truck crane equipped with a traveling device of the present invention.

2A to 2D are explanatory views showing an embodiment of a method for moving a truck crane.

3A to 3C are explanatory views showing an embodiment of a moving method of a truck crane.

4A to 4D are explanatory views showing an embodiment of a method for moving a truck crane.

5 (a) and 5 (b) are explanatory views of a conventional truck crane moving over an obstacle.

[Explanation of symbols]

 9 Working Machine 10 Vehicle Body 12 First Elevating Means 13 Telescopic Means 14 Second Elevating Means

Claims (4)

[Claims] 1. A moving device for a working machine, comprising: first elevating means provided respectively on the front, rear, left and right of the body of the working machine to vertically elongate and lower the body of the working machine; Front and rear expansion and contraction means respectively provided to be expandable and contractible in the front and rear direction, and second elevating means respectively provided at the front and rear ends of the front and rear expansion and contraction means so as to be respectively expandable and contractible in the vertical direction. When the second elevating means contracts the first elevating means and expands and contracts the second elevating means, the vehicle body moves up and down, and when the second elevating means extends, the front and rear expanding and contracting means expand and contract. A moving device for a working machine, wherein the moving device is configured to move back and forth while the vehicle body is being lifted. 2. The front and rear expansion / contraction means, while the vehicle body is being lifted by the second elevating / lowering means, the other expansion / contraction means is contracted in synchronization with the expansion / contraction operation of one expansion / contraction means,
2. The moving device for a working machine according to claim 1, wherein the other expansion / contraction means is configured to be expanded in synchronization with the contraction operation of one expansion / contraction means. 3. The work machine moving apparatus according to claim 1, wherein the work machine is a truck crane. 4. The work machine moving apparatus according to claim 1, wherein the first elevating means is constituted by an outrigger mounted on a vehicle body.