JPS5936100A - Forklift - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a forklift, and more particularly to a forklift with good forward visibility.゛Conventional general forklifts usually have a cargo handling device right in front of the driver's seat, and while this is the most effective arrangement for carrying out cargo handling work, when the truck is moving to transport a load, the cargo handling device is located right in front of the driver's seat. The presence of the device obstructs the forward field of view and is an obstacle to safe driving.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a forklift truck in which a cargo handling device can be moved upward to the rear of the vehicle body as necessary.

Embodiments of the present invention will be specifically described below with reference to the drawings. In the figure, 1 indicates a vehicle body, on which an engine hood 2 is disposed at the center, a weight 3 at the rear end, a driver's seat 4 at the front left, and a swivel base 5 at the front right. The swivel base 5 is rotatable around a vertical axis via a swivel seat bearing 6. That is, as shown in FIG. 3, the outer ring 7 of the swivel seat bearing 6 is fixed to the vehicle body side with bolts or the like, and the inner ring 9 having the internal gear 8 on the inner peripheral surface is fixed to the swivel base 5 with bolts or the like. The swivel base 5
is rotated together with the inner ring 9 by a pinion 11 that is driven by a hydraulic motor 10 (an electric motor may also be used) disposed inside the vehicle body 1 via a reduction gear (for example, a worm gear).

The cargo handling device 12 is still arranged at the front of the vehicle body 1. The cargo handling device 12 includes a pair of left and right masts 15 consisting of an inner mast 13 and an outer mast 14, a lift bracket 16 that is raised and lowered along the outside of the outer mast 14,
It is composed of a finger bar 17 fixed to the front surface of the lift bracket 16, a fork 18 supported by the finger bar 17, a lift cylinder 19 for raising and lowering the fork, a lift chain 20 degrees, and a tilt cylinder 21 for tilting the mast 15 back and forth. The pair of left and right masts 15 are mounted on the vehicle body 1 so as to be located in front of the swivel base 5.
However, the finger par 17 and fork 18 are arranged with a width that is approximately equal to the width of the vehicle, as in the past.

The inner mast 13 has a pair of left and right mast brackets 23 on the rear surface of a lower tie beam 22 that connects the lower parts of the rear surface. It is pivoted. It's a trench, the tilt cylinder 21 has one end on the swivel base 5,
The other end is attached to the lower tie beam 22 with a pin 26.
It is pivotally connected via 27. That is, the cargo handling device 12
The inner mast 13 is fixed and supported by the swivel base 5, and the swivel base 5
It is possible to change the position by the turning action of.

In addition, the inner mast 13 is formed to be shorter than the outer mast 14 on the movable side in order to avoid interference with the vehicle body 1 during position change, and is installed so that its lower end is higher than the top surface of the vehicle body 1. There is. That is, the inner mast 13 is formed in such a length that its upper end is at a position slightly lower than the upper end of the outer mast when the outer mast 74 is lowered to its lower end. Therefore, when the outer mast 14 is lowered, the lower side should protrude from the inner mast 13, so there is one lift roller 28 on the upper part of the inner mast 13, which guides the raising and lowering of the core outer mast 14.
One each is placed at the center and bottom of the outer mast 14. In addition, one lift cylinder 19 placed in the center between the masts is connected to the lower tie beam 2 of the inner mast 13.
The upper end of the rod is connected via a wheel the boat 30 to an upper cross beam 29 that connects the upper ends of the outer mast 14. Further, the lift chain 20 is hung on the wheel 31, and has one end hooked on the lift cylinder 19 and the other end hooked on the finger par 17. It should be noted that the lift cylinder 19 and the lift chain 20 may be of a two-piece type instead of the one-piece type shown.

The No. 7 oak lift of this embodiment is configured as described above, and therefore, during cargo handling work, the cargo handling device 12 is positioned at the front of the vehicle body 1 as shown in FIG.
Loading and unloading work can be performed by operating 2 in the same manner as before.

On the other hand, when traveling to transport cargo, the outer mast 14 is raised to a position where its lower end is at least at the same height as the lower end of the inner mast 13, as shown in FIG.
By driving the hydraulic motor 10, the cargo handling device 12 can be swiveled together with the swivel base 5 via the swivel seat bearing 6, as shown in FIG. 4, and can be displaced upward to the rear side of the vehicle body 1. That is, by repositioning the cargo handling device 12 to the upper part of the vehicle body while driving, it is possible to drive safely while securing the forward field of view from the driver's seat 3, and the overall length of the vehicle is shortened, making it easier to turn. Front and rear stability also improves.

Next, another embodiment of the present invention will be described based on FIG. In this embodiment, the fork 18, which is a loading device in the cargo handling device 12, is of a reach type. That is,
A finger bar 17 that supports the fork 18 is attached to the front plate 16a of the lift bracket 16 via a pantograph link mechanism 32, and can be moved upward and backward by a reach cylinder 33. According to this embodiment, in addition to the same functions as those of the above-mentioned embodiments, it is possible to carry out a task of picking up a load placed in a secluded place and a task of intercepting a load placed on the right side of the vehicle.

In the illustrated example, the driver's seat 4 is arranged on the left side and the swivel base 5 is arranged on the right side, but this arrangement may be reversed.

As detailed above, the present invention makes it possible to relocate the cargo handling device to the upper part of the vehicle body, which solves the problem of obstructing the forward view due to the cargo handling device and the cargo, thereby improving safety and reducing fatigue when transporting the cargo. This is effective and helps improve maneuverability and stability.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view showing the entire forklift, FIG. 2 is a plan view, FIGS. 3 and 4 are partially cutaway side views showing operating modes, and FIG. 5 is a perspective view showing the entire forklift. 6 is a perspective view showing a cargo handling device, and FIG. 6 is a plan view showing another embodiment of the present invention. 1...Car body 4...Weight 5...Swivel base 6...Swivel seat bearing 12...Cargo handling device 15...Mast 18...・Fork 19...Lift cylinder 21...Tilt cylinder Applicant: Toyota Industries Corporation Representative Patent attorney Oka 1) Hidehiko Figure 1q Figure 2 Figure 5 Figure 6

Claims (1)

[Claims] A driver's seat is disposed on either the right or left side of the front upper part of the vehicle body, and a swivel base is disposed on the other side so as to be rotatable around a vertical axis, and the swivel base is disposed at the front of the vehicle body. What is claimed is: 1. A forklift truck, characterized in that the cargo handling device is supported and can be displaced upwardly and rearward of a vehicle body.