JPH11147607A - Expandable mobile belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the work efficiency by providing a belt constituting a belt conveyor by folding it back in a condition in which it is extended through a plurality of rollers and forming at least one folding back roller as a mobile roller capable of moving in the direction of extension of the belt. SOLUTION: A belt conveyor 3 is installed on a lifting pedestal 2. Since the lifting pedestal 2 of pantagraph type capable of rotating for a truck 1 freely is used, the belt conveyor 3 attached to an upper part thereof can ascend, descend, and turn. Furthermore, the imbalanced ascent and descent, namely, the elevation of the belt conveyor 3 is possible by adjusting a height of lifting. In the belt conveyor 3, a roller 4 is provided by folding it back at more than four sections, and a belt 31 is extended in a condition in which it is folded back through the hollers 4 at more than four sections. At least one of folded back rollers 4 is constituted as a traveling roller 5 capable of traveling in the direction of extension of the belt 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic movable belt conveyor.

[0002]

2. Description of the Related Art A belt conveyor is generally used to discharge excavated earth and sand.

[0003]

However, the conventional belt conveyor has the following problems. <B> When the excavation position moves frequently, the belt conveyor must also move frequently in accordance with the position. <B> Especially in underground excavations with poor scaffolding, the movement of the belt conveyor has to rely on human power, which is dangerous and inefficient.

[0004] The present invention has been made to solve the above-mentioned conventional problems. Even if the excavation position frequently moves, the belt conveyor is maintained at a fixed position.
An object of the present invention is to provide a telescopic movable belt conveyor capable of discharging excavated earth and sand.

[0005]

In order to achieve the above object, an extendable moving belt conveyor according to the present invention is provided on a movable carriage so that the movable belt can be raised, lowered, and turned. The belt constituting the belt conveyor is installed by folding back in a state where the belt is extended through a plurality of rollers, and at least one of the folding rollers is configured as a moving roller that can move in the belt extending direction. It is characterized by an extendable movable belt conveyor.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a movable belt conveyor according to the present invention.

<A> Truck. The cart 1 is provided with a crawler belt 11, wheels, and the like that can travel on uneven terrain. On this carriage 1, for example, a pantograph-type elevating platform 2 is attached around a vertical axis. Then, a belt conveyor 3 is set on the lifting base 2. Since the pantograph type elevating rack 2 that can rotate with respect to the cart 1 is used, the belt conveyor 3 attached to the upper part thereof can be moved up and down and turned. Further, by adjusting the height of the ascending and descending, it is also possible to perform an unbalanced ascending and descending, that is, the reclining of the belt conveyor 3.

<B> Belt conveyor. A conventional belt conveyor has a structure in which two rollers or pulleys are provided at both ends of a belt and turned back. However, the belt conveyor 3 of the present invention is provided with folding rollers 4 (pulleys) at four or more places, and the belt 31 is stretched while being folded back via these four or more rollers 4. Then, at least one of the folding rollers 4 is configured as a moving roller 5 that can move in the direction in which the belt 31 extends.

<C> Moving frame. The belt conveyor 3 is divided into two frames, that is, a fixed frame 6 and a moving frame 7. Then, the above-mentioned folding rollers 4 are dispersedly arranged on both frames. However, the moving roller 5 is provided on the moving frame 7 side.
To store. The center axis of the moving roller 5 is slidably attached to the moving frame 7, but the position cannot be maintained as it is. Therefore, the position of the moving roller is maintained in a state where the moving roller is attracted by a telescopic mechanism such as a spring 51 or a cylinder. An extension jack 8 is arranged between the fixed frame 6 and the moving frame 7.
The distance between the frames 6 and 7 is changed by extending and contracting the jack 8.

<D> Belt extension operation. When the belt 31 is extended, the extension jack 8 is extended, and the movable frame 7 is pushed out by applying a reaction force to the fixed frame 6. Then, since the length of the belt 31 is constant, the position of the moving roller 5 is regulated by the belt 31, and the moving roller 5 moves in the pushing direction against the force of the expansion and contraction mechanism such as the spring 51, and the length of the belt 31 is reduced. Absorb the Thus, the length of the belt conveyor 3 can be extended.

<E> Use in excavation work. At the excavation site, the position of the excavator moves forward according to the excavation amount. In that case, the moving frame 7 side of the belt conveyor 3 of the present invention is brought close to the excavation position. Then, the extension jack 8 is extended in accordance with the advance of the excavation position. Then, the moving frame 7 moves, and the tip of the belt conveyor 3 can be always positioned close to the excavation site. When the extension of the belt conveyor 3 is reached, the moving frame 7 is returned to the original position again, the entire length of the belt conveyor 3 is shortened, and the entire carriage 1 is moved to approach the excavation position. Thus, the tip of the belt conveyor 3 can be constantly extended to the vicinity of the excavator to discharge the earth and sand.

[0012]

As described above, the telescopic movable belt conveyor of the present invention has the following effects. <B> Even if the excavation position changes frequently, the tip of the belt conveyor 3 can be kept close to
There is no need to frequently change the setup of the belt conveyor 3, and the work efficiency can be improved. <B> The number of devices that collect and transport excavated earth and sand can be reduced, so that a favorable working environment can be maintained. <C> Especially at underground excavation sites with poor scaffolding,
Since the opportunity to move the belt conveyor 3 manually is reduced, the work can be performed safely.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an embodiment of an extendable movable belt conveyor according to the present invention.

FIG. 2 is an explanatory view of a stretched state.

FIG. 3 is an explanatory view of a state in which the apparatus is used while being tilted.

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] January 9, 1998

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akio Yoshikawa 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Corporation

Claims (5)

[Claims] A belt conveyer is installed on a movable dolly so as to be able to ascend, descend, and turn, and a belt constituting the belt conveyer is folded back through a plurality of rollers. An extendable movable belt conveyor, wherein at least one of the folding rollers is configured as a movable roller capable of moving in a belt extending direction. 2. A belt is divided into a fixed frame and a movable frame and housed therein. A plurality of rollers are installed in each frame, and a belt constituting a belt conveyor extends through a plurality of rollers installed in both frames. The telescopic movable belt conveyor according to claim 1, wherein the movable roller conveyor is configured so that the frame on which the movable roller is housed is movable by taking a reaction force from the fixed frame. 3. The telescopic unit according to claim 1, wherein the moving roller installed in the moving frame is attached to the moving frame by an expansion mechanism, and when the moving frame expands and contracts, the position is set by expansion and contraction of the expansion mechanism. Possible moving belt conveyor 4. An extendable movable belt conveyor according to claim 3, wherein a spring is used as an extendable mechanism for holding a position of the movable roller installed in the movable frame. 5. An extendable movable belt conveyor according to claim 3, wherein a cylinder is employed as an extendable mechanism for holding a position of a movable roller installed in the movable frame.