JPH0240745Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an overturn prevention device for a lift vehicle used for high-altitude work, particularly for fruit tree cultivation.

However, due to the high height of the aircraft, it was prone to instability and there was a risk of tipping over.

The present invention aims to provide an overturn prevention device for a lift work vehicle that can eliminate these inconveniences.

This device is used in a lift work vehicle in which a work platform 3 is disposed on a track-traveling machine body 1 via a pantograph-type lifting mechanism 2 so as to be able to be raised and lowered. The insertion rods 4a are inserted into and fixed in the insertion pipe 12 so as to be freely drawn out, and the insertion rods 4b are vertically installed at the tips of the two front and rear insertion rods 4a.
This relates to an overturn prevention device for a lift work vehicle, characterized in that a ground plate 4 is attached between the lower ends of the track in parallel with the crawler track.

This example will be explained in detail.

The pantograph type lifting mechanism 2 of this embodiment is shown as a two-stage type, and a hydraulic cylinder 6 is reciprocated by an engine 5, a hydraulic pump (not shown), and a directional control valve (not shown). 6 operates the pantograph type lifting mechanism 2, and the work platform 3
I try to move up and down.

Reference numeral 7 is a running operation section, 8 is a step stool, and 9 is a safety guard.

Further, the crawler belt 10 is driven by the engine 5 via a deceleration mechanism (not shown).

Reference numeral 11 is a lifting operation section.

Further, the ground plate 4 of this embodiment is formed by bending the front and rear ends of a flat rectangular pipe upward.

The insertion rod 4a inserted into the insertion pipe 12 is fixed in position with the fixing bolt 13, and by pulling out the insertion rod 4a from the insertion pipe 12, the crawler traveling aircraft 1 is fixed.
By making the distance between the left and right sides of the vehicle and the ground plate 4 variable, and by inserting the grounding rod 4b upside down, it is possible to prevent it from getting in the way when driving, as shown by the imaginary line in Figure 2. ing.

As described above, the present invention is a lift work vehicle in which a work platform is disposed on the crawler body so that it can be raised and lowered via a pantograph type lifting mechanism. , freely insert and fix the insertion rod into this insertion pipe,
A ground rod is installed vertically at the tips of the two front and rear insertion rods, and a ground plate is attached between the lower ends of the front and rear earth rods in parallel with the crawler track. When inserting rod 4a is pulled out by the same length, inserting rod 4
The ground plate 4, which is supported by a ground rod 4b hanging vertically at the tip of a, touches the ground at a location away from the crawler-travelling body 1. Therefore, the work platform 3 is raised by the pipe-type lifting mechanism 2, and the body is raised. Even if the height is increased, the ground plate 4 connected to the fuselage is supported at a distance from the fuselage, so two insertion rods 4a are provided at the front and the rear, and the ground plate 4 is supported by two ground rods 4b. This supports the machine body in an extremely stable manner, allowing workers to perform various tasks while standing on the elevated work platform 3 in a stable and safe state.

In addition, by turning the grounding rod 4b upside down and attaching the insertion rod 4a to the insertion pipe 12, the grounding plate 4 can be installed so that it does not get in the way when driving, making it highly practical for the lift work vehicle to fall. Acts as a prevention device.

As described above, the intended purpose can be fully achieved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a perspective view of the whole, and FIG. 2 being a sectional view of the main parts. 1... Crawler traveling aircraft, 2... Pantograph type lifting mechanism, 3... Workbench, 4... Ground plate, 4a...
Insertion rod, 4b...Grounding rod, 12...Insertion pipe.

Claims (1)

[Scope of utility model registration request] In a lift work vehicle in which a work platform is disposed on a crawler-traveling body so that it can be raised and lowered via a pantograph-type lifting mechanism, insertion pipes are installed horizontally in the width direction at the front and rear of the crawler-travelling body, respectively, and insertion pipes are inserted into the insertion pipes. The insertion rods are inserted and fixed in a manner that allows them to be freely pulled out, and grounding rods are installed vertically at the tips of the two front and rear insertion rods, and a grounding plate is attached between the lower ends of the front and rear earthing rods in parallel with the track. A fall prevention device for lift work vehicles featuring: