JPH10129332A - Conveying vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly perform appropriate operation while checking a fork and a load from an operation unit by arranging a movable body which can be moved forward/backward freely between carriages, arranging a forklift device whose fork is directed backward in the back part of the movable body, and allowing elevation of the operation unit. SOLUTION: For loading natural stone 27, an operation unit 5 is lifted firstly. A movable body 15 in the forward movement limit position is moved to the backward movement limit position, and an empty fork 24 in a forklift device 20 is protruded backward toward a rear vehicle body 10. Then, the fork 24 is lowered by means of drive of a lift cylinder so as to be positioned in the lower limit position close to the ground. As the fork 24 is lowered, the stone 27 can be placed on a carriage 11 and removed from the fork 24. Finally, the operation unit 5 is lowered, and loading work of the stone 27 is finished.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport vehicle used for loading and transporting large rough stones, for example, at a rough stone quarry.

[0002]

2. Description of the Related Art Conventionally, when loading and transporting large rough stones,
For example, if the transportation distance is short, the vehicle is transported to the destination using only a large forklift, and if the transportation distance is long, the load is temporarily loaded on a large forklift and then loaded on another transport vehicle and transported to the destination. Was.

[0003]

However, according to the above-mentioned large forklift, it is impossible to travel if the road surface condition is poor, and it is not suitable for roads with many slopes because the load easily falls. In addition, according to the combination with another transport vehicle, a large number of forklifts are required in addition to the transport vehicle, which increases the equipment cost.

Accordingly, an object of the present invention is to provide a transport vehicle capable of loading and unloading a load, and capable of running stably even on a road having a bad road surface and many hills. Things.

[0005]

According to a first aspect of the present invention, there is provided a transport vehicle having a driving unit at a front portion and a pair of left and right loading platforms at a rear portion. And the vehicle body is provided with a movable body that can move forward and backward between the loading platforms, and a rear portion of the movable body is provided with a forklift device that directs the fork backward.
The operation unit can be moved up and down.

Therefore, according to the first aspect of the present invention, by raising the driving unit, the field of view of the worker can be widened and the position of the rear fork can be easily seen, so that the worker can visually check the other workers. Can be operated while checking the load from the driving unit without relying on the instruction based on the information. In this state, the movable body was moved backward, the empty fork of the forklift device was made to protrude rearward with respect to the vehicle body, and then the fork was lowered. Then, the vehicle body was retracted, and the fork was inserted under the load. Later, the load can be lifted by raising the fork. And move the movable body forward,
After the load supported by the fork is positioned above the loading platform, the load can be placed on the loading platform by lowering the fork. Thereafter, the loading operation is completed by lowering the driving unit, and the load can be transported by running the transport vehicle. Note that the unloading operation of the load can be executed by the operation reverse to the above.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
A description will be given, based on the drawings, of a state in which a large ore such as granite is loaded and transported by a transport vehicle at an ore collection site.

That is, the transport vehicle 1 includes a track head 2 and a trailer 8 connected to a rear portion of the track head 2 via a vertical shaft 7. The track head 2 includes a front vehicle body 4 having wheels 3 and an operation unit 5 provided at a right rear corner on the front vehicle body 4 so as to be able to move up and down by, for example, a hydraulic cylinder (not shown). ing. The trailer 8 is provided with a pair of left and right loading platforms 11 which are long in the front-rear direction on the upper surface side of a rear body 10 having wheels 9.

A movable body 15 is provided on the rear body 10 so as to be able to move back and forth between the pair of left and right loading platforms 11. That is, the rear body 10 is provided with guide rails 12 extending in the front-rear direction inside the both loading platforms 11, respectively. The movable body 15 in the form of a bogie includes a plurality of idle rollers (wheels).
By being supported and guided by the guide rails 12 via 16, it is configured to be able to move forward and backward freely. At this time, forward / backward movement can be performed by disposing a reach cylinder device or linking a traveling drive device to the idler roller 16 (none of them is shown). This is performed within the range of the distance L.

At the rear of the movable body 15, a forklift device 20 with its fork (described later) directed rearward is provided.
Is provided. The forklift device 20 includes a vertical outer mast 21 whose lower part is fixed to the rear part of the movable body 15, an inner mast 22 supported and guided by the outer mast 21 and capable of moving up and down, and a rear part of the inner mast 22. A lift bracket 23 that is provided on the side and is supported and guided by the inner mast 22 side so as to be able to move up and down; a fork 24 that is provided on the lift bracket 23 in a rearward direction;
Lift cylinder along the outer mast 12 and a lift interlocking mechanism for raising and lowering the lift bracket 23 in conjunction with the raising and lowering of the inner mast 22 (both not shown).
And so on.

The movable body 15 and the outer mast 21 are formed as an L-shaped integral structure, and the two members 15 and 21 are reinforced by the oblique member 18. The lift cylinder, the reach cylinder, and the like are driven by operating the operation lever 6 of the operation unit 5, so that a rough stone (an example of a load) 27
Is performed.

The operation of the above embodiment will be described below. For example, when loading the rough stone 27, first, the driving unit 5 is raised as shown by the phantom lines in FIGS. Thereby, the operator (operator) of the driving unit 5 has a wide field of view, and the position of the rear fork 24 and the like can be easily seen. Therefore, the operator of the driving unit 5 can obtain the rough stone 27 from the driving unit 5 without relying on the visual instructions of other workers.
Can be operated while confirming.

Next, by driving a reach cylinder and the like, FIG.
The movable body 15 at the forward limit position is moved to the retreat limit position as shown by the imaginary line A, and the empty fork 24 of the forklift device 20 is moved with respect to the rear body 10 as shown by the imaginary line B in FIG. Protrude backward. Next, by driving the lift cylinder, the fork 24 is lowered to the lower limit position close to the ground as shown by the solid line in FIG.

Subsequently, the transport vehicle 1 is retracted, and as shown by the imaginary line C in FIGS. 1 and 3, the fork 24 is inserted into the lower part of the rough 27, and the lift cylinder is driven to drive the fork 24. The rough 27 is lifted as shown by the solid line in FIG.

Then, the reachable cylinder is driven to move the movable body 15 to the forward limit position as shown by the imaginary line d in FIG. 2, and the ore 27 supported by the fork 24 is positioned above the bed 11. . By lowering the fork 24 from this state, the rough 27 is placed on the carrier 11 and detached from the fork 24 as shown by the imaginary line E in FIGS. Finally, the operation of loading the rough 27 is completed by lowering the driving unit 5.

After that, by moving the transport vehicle 1,
The rough 27 can be transported. At this time, the rough 2
7 is placed between the left and right loading platforms 11, so that the transport vehicle 1 can be stabilized without dropping the rough stone 27 even on a road with a bad road surface or a road with many hills. And the rough stone 27 can be transported. In the operation of unloading the rough 27, the reverse operation is performed.

As described above, the movable body 15 having the forklift device 20 is provided between the pair of left and right loading platforms 11 provided on the rear body 10 so as to be able to move forward and backward, and the operating unit 5 can be moved up and down. (Operator)
Since the ore (load) 20 is stably loaded on the pair of left and right loading platforms 8 from the driving unit 6 raised without relying on the visual inspection of other workers, it can be stably transported even on a rough road or a slope. it can.

In the above-described embodiment, the ore 2
Although 0 is shown, it can handle various loads. In the above-described embodiment, the transport vehicle 1 in which the front vehicle body 4 of the truck head 2 and the rear vehicle body 10 of the trailer 8 are connected via the vertical shaft 7 is shown, but other connecting means is used. Alternatively, the vehicle body may be an integrated transport vehicle.

In the above-described embodiment, the hydraulic cylinder is used as the elevating device of the driving unit 5 and the forward / backward moving device of the movable body 15, but other types such as a motor may be adopted.

[0020]

According to the first aspect of the present invention, by raising the driving unit, the operator can check the fork and the load from the driving unit without relying on the visual instructions of other operators. Meanwhile, quick and accurate operation can be performed. Then, by the combination of the forward and backward movement of the movable body and the fork operation of the forklift device, the load can be loaded and unloaded on the carrier, and the transport vehicle can be run to carry the load. Loading and unloading work and transport work can be performed by one transport vehicle,
It is economical in equipment costs and labor costs. Moreover, since the load is carried by placing the load between the left and right loading platforms,
Even on a road with a bad road surface condition or a road with many hills, the operation can be performed stably without dropping the load.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, and is a partially cutaway side view when a load scooping operation is performed in a transport vehicle.

FIG. 2 is a partially cutaway side view at the time of loading operation in the transport vehicle.

FIG. 3 is a plan view of the transport vehicle.

FIG. 4 is a front view of the transport vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transport vehicle 2 Truck head 4 Front body 5 Operation part 8 Trailer 10 Rear body 11 Carrier 15 Movable body 20 Forklift device 24 Fork 27 Raw stone (load)

Claims (1)

[Claims] The vehicle body has a driving portion at a front portion, a pair of left and right loading platforms at a rear portion, and a movable body is provided on the vehicle body that can move back and forth between the loading platforms. A forklift device having a fork directed rearward at a rear portion, wherein the driving unit can be moved up and down.