JPH068154Y2 - Sinking forklift - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sinking type forklift capable of lowering a fork below a traveling road surface.

[Prior Art] In a conventional general settlement type forklift, as shown in FIG. 3, for example, a sinking mast 3 extending downward is fixed to a lift bracket 2 which is guided by a mast 1 and moves up and down. A fork 4 is attached to the lower end of the mast 3. When the lift bracket 2 is at the lowest position, as shown in the figure, the fork 4 is moved to the wheel 5 of the forklift.
Is located below the road surface that supports the vehicle.

A sinking forklift truck with such a configuration often
It is used to lift and lower boats. When lowering the boat 6 from the land to the water surface, first, the worker A operates the forklift exclusively, and lowers the boat 6 on the water surface while the worker B is still on the boat 6, and then,
The worker B is supposed to drive the boat 6 to a predetermined berth. On the contrary, when the boat 6 is landed, the boat 6 is arranged right above the fork 4 that has been lowered below the surface of the water in advance, and the fork 4 is raised to lift the boat 6 while the worker B is mounted.

[Problems to be Solved by the Invention] In the conventional sinking type forklift as described above, it is very difficult to transfer from the driver's seat of the forklift to the boat on the water and vice versa. Therefore, at least two workers, that is, a driver dedicated to the forklift and a driver dedicated to the boat need to work.

Therefore, the purpose of the present invention is to provide a driver's seat for a forklift,
Between the forks located below the road surface,
It is to provide a sinking forklift that allows workers to easily move between them.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a sinking mast that is fixed to a lift bracket that is guided by the mast and vertically moves, and a lower end portion of the sinking mast. In the sinking forklift truck having a fork attached thereto, a plurality of lifting steps are attached to the sinking mast in the vertical direction at appropriate intervals to form a ladder.

[Operation] With the above configuration, for example, at the time of raising and lowering work of a boat, a worker can easily go up and down along the ladder between the forklift and the boat on the water.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same reference numerals will be used for the same or corresponding portions.

As shown in FIGS. 1 and 2, the sinking-type forklift to which the present invention is applied is substantially the same as the conventional structure described above, and a pair of left and right masts 1 are erected on the front part of the machine base. ing. The mast 1 is composed of an outer mast 7 that is attached to the machine base in a tiltable manner, and an inner mast 9 that is attached to the inside of each outer mast 7 so as to be vertically moved by a lift cylinder 8. The lift bracket 2 is guided to the inner mast 9, and is moved up and down as the inner mast 9 moves up and down. A subsidence mast 3 is fixed to each lift bracket 2 and extends downward, and a tie beam 10 is provided between the left and right subsidence masts 3. Further, a finger bar 11 and a support bar 12 are laterally provided at the lower end portion between the sinking masts 3, and a fork 4 is hooked on the finger bar 12. Subsidence mast 3
A guide roller 14 attached to the lower portion of the inner mast 9 is fitted in the rail groove 13 formed in the inner groove. When the lift bracket 9 is moved up and down, the sinking mast 3 is guided by the guide roller 14. It is designed to move up and down.

As shown in FIG. 2, one sinking mast 3 is provided with a plurality of elevating steps 15 made of steel rods at appropriate intervals in the vertical direction from the upper end to the lower end of the ladder.
Forming 16. It should be noted that the step 15 of the portion through which the guide roller 14 passes is L-shaped so as not to interfere with the guide roller 14.

Next, a case where a boat for hoisting and lowering work is carried out by using the sinking forklift having such a structure will be described.

First, when lowering the boat 6 to the surface of water, the operator operates the forklift to put the landed boat 6 on the fork 4, and arranges the forklift on the quay so that the fork 4 is located above the surface of the water. . Next, the fork 4 is lowered below the water surface so that the boat 6 can be operated (see FIG. 1). At this time, the boat 6 is the fork 4
The boat 6 is fixed to the fork 4 or the sinking mast 3 by an appropriate locking means so that the boat 6 does not float up. Here, the worker is the ladder installed on the sinking mast 3.
Go down 16 and transfer to boat 6. After that, the locking means is released, the boat 6 is floated on the water, and the worker moves the boat 6 to a predetermined ship dock.

It will be easily understood that when the boat 6 is unloaded, the reverse operation to the above may be performed.

In this way, by providing the ladder 16 on the sinking mast 3, the worker can easily move from the driver's seat of the forklift to the boat 6 on the water, but the ladder 16 is provided for further facilitating the movement. It is preferable to provide a lifting grip 17 at an appropriate position on the sinking mast 3. Also,
It is also preferable to attach a non-slip mat 18 to the tie beam 10 in consideration that the tie beam 10 may be put on the boat 6 and transferred to the boat 6.

In the above embodiment, the ladder 16 is provided on one of the sinking masts 3, but a ladder may be provided on each of the left and right sinking masts 3.

[Advantages of the Invention] As described above, according to the present invention, a worker can easily climb up and down between the driver's seat of the sinking forklift and the forks below the traveling road surface. The work of raising and lowering the boat, which requires a human worker, can be performed by one worker, and the work efficiency can be improved. In addition, since the structure is simple, it is possible to add a ladder inexpensively and easily to the currently used sinking forklift.

[Brief description of drawings]

FIG. 1 is a side view showing an entire sinking forklift according to the present invention, FIG. 2 is a perspective view showing details of a sinking mast, and FIG. 3 is a side view showing a conventional sinking forklift. In the figure, 1 ... mast, 2 ... lift bracket 3, subsidence mast, 4 ... fork 6 ... boat, 15 ... lifting step 16 ... ladder, 17 ... lifting grip 18 ... mat

Claims (1)

[Scope of utility model registration request] 1. A sinking forklift having a sinking mast fixed downward to a lift bracket that is guided by the mast and extending downward, and a fork attached to the lower end of the sinking mast, wherein the sinking mast is A sinking forklift truck, characterized in that a ladder is formed by mounting a plurality of lifting steps at appropriate intervals in the vertical direction.