JPH0444553Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an apparatus for working at high places, in which a multi-stage telescoping cylinder having a workbench at its tip is disposed on a base.

``Prior art'' Conventionally, a multi-stage telescoping cylinder is placed on a base, and by expanding and contracting the telescoping cylinder using hydraulic pressure or other drive sources, a workbench fixed at the tip is moved in the vertical direction. There are various types of high-altitude work equipment.

For example, FIG. 3 shows an example of such a working device, and to briefly explain its configuration, 1 is a base movable by a prime mover or human power, and 20 is a workbench fixed to the telescopic tube head at the innermost end of the tip. It is a multi-stage telescoping tube that can be extended and contracted to a desired height by hydraulic drive.

In order to stabilize the center of gravity, this device has legs extending outward diagonally from the base, and the legs are held on the installation surface of the base.
The telescoping cylinder is extended to prevent the device from tilting or falling when working at high places, so that the work can be carried out safely.

``Problems that the invention attempts to solve'' However, in the conventional device described above, a pump and a hydraulic tank as a hydraulic drive source must be installed within the base, which inevitably increases the size and weight of the base. In addition to making it difficult to move easily,
In order to stabilize the base, legs extending outward on the diagonal of the base are provided, which increases the external size of the device and severely restricts movement on narrow road surfaces such as narrow roads. At the same time, installation in a narrow area becomes difficult.

In view of the shortcomings of the conventional technology, the present invention aims to propose an apparatus for working at high places, which reduces the size and weight of the entire apparatus, eliminates the need to attach the legs, and thereby reduces the number of parts. shall be.

"Means for Solving Problems" In order to achieve this technical problem, the present invention does not require a fluid tank inside the base, but instead arranges the fluid tanks in at least three directions around the base. The first component is that the tank can be moved into and out of the base installation surface via an elevating member.

The fluid stored in the tank is preferably water containing a rust preventive agent that can be discharged.

"Function" According to the present invention, when working at high places by extending the telescoping cylinder, the fluid tank is placed on the base installation surface, in other words, on the ground, and the tank is lowered by the elevating member and placed above the ground. By installing the tank in the tank, the tank can serve as legs and stably hold the base.

Furthermore, since the fluid is stored in the tank, and the tanks are arranged in at least three directions around the base, the stability of the center of gravity is further improved, and the equipment is prevented from tilting or falling over. You can eliminate fear even more. In other words, in conventional devices, the center of gravity of each device is concentrated at the center because the fluid tank is located inside the base, but with the present invention, the heavy fluid tank is located around the base, so The center of gravity of the fluid tank is dispersed in at least three directions, which further improves the stability of the center of gravity of the entire device.Furthermore, the installation area of the device relative to the base installation surface is larger than that of conventional devices using legs, so load distribution is achieved. Since the load per unit area of the installation area is small, it can be installed more easily than conventional devices even in places with weak ground support.

Further, after the work at high places is completed, the fluid tank is raised by the elevating member and moved away from the ground, so that the device can be easily moved in any direction using the moving means provided on the base. In this case, by configuring the fluid stored in the tank with water containing a rust preventive agent, the tank can be moved in an empty state by discharging the water containing a rust preventive agent from the tank during the movement. This makes it easier to move around.

Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail by way of example with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, and relative positions of the components described in this example are not intended to limit the scope of this invention, but are merely illustrative examples. It's nothing more than that.

1 to 3 show an aerial work vehicle according to an embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a plan view, and FIG. 3 is a side view.

In the figure, reference numeral 1 denotes a base 1 equipped with wheels 11 that are movable on both left and right sides, and a fluid pump 12 is built inside. Reference numeral 20 denotes a multi-stage telescoping cylinder in which telescopic cylinder members 20a whose outer diameters gradually become smaller are fitted concentrically so as to be expandable and retractable.At this time, a workbench 30 is fixed to the tip of the inner telescoping cylinder member 20a, and the telescoping cylinder is Member 20
a... By injecting fluid discharged from the fluid pump 12 into the interior thereof, the telescopic cylindrical members 20a are configured to be expandable in response to the pressure of the fluid.

and the lower end of one side of the workbench 30 or the horizontal guide plate 2
The unit ladders 22a, which are connected in parallel to the axis of the telescopic cylindrical member 20a through 1b, are each successively deflected outward while the unit ladders 22a are suspended,
Each unit ladder 22a is configured to expand and contract following the expansion and contraction of the telescopic cylindrical members 20a, and a long telescopic ladder 22 is formed by the expansion of the telescopic cylindrical members 20a.

In this device, rectangular fluid tanks 10a are attached to three sides of the base 1 via elevating members 15. Each fluid tank 10a...
The fluid tank 10a is connected to the fluid pump 12 via a connecting pipe 13, and is configured so that water can be easily injected and discharged at the site through a fluid inlet 14 and an outlet 18 provided on the outside. . The elevating member 15 is constituted by a handle 17 having a screw shaft 16, and the tanks 10a can be moved toward and away from the ground by rotating the handle 17.

Next, the operation of this embodiment will be explained. When working at high places, after moving this device to a predetermined position, fill the fluid tanks 10a with anti-rust agent water, and then turn the handle 17 to close each fluid tank. 10a... is lowered until it is placed on the ground to stabilize the device.

Next, by driving the fluid pump 12, the telescopic cylindrical members 20a are extended, the workbench 30 is raised to a predetermined position, and a predetermined work is performed.

The amount of water stored in the fluid tanks 10a is preferably configured such that a certain amount of water remains even when the telescopic cylindrical members 20a are raised to the uppermost position.

After the predetermined work is completed, the fluid pump 12 is reversed to lower the workbench 30 and return the water injected into the telescopic cylinder members 20a into the tanks 10a.

After the return of the water is completed, the water returned to the tank 10a is discharged to the outside, and the tank 10a is emptied.

Next, the handle 17 of the elevating member 15 is reversely rotated to raise and separate the bottom surface of the tank 10a from the ground, and the device is moved to the next location using the rear wheels 11.

``Effects of the invention'' According to the invention, the fluid tanks placed around the base serve as legs, eliminating the need for the legs and increasing the load due to the fluid stored in the tank. The center of gravity of the device is dispersed outward, greatly improving the stability of the device as a whole.

In addition, since the center of gravity of each device is distributed outward, there is no need to extend the legs outward as long as the legs of conventional devices, and the tank can be placed adjacent to the base, making the device more compact. In other words, it has achieved a compact space and can be easily moved and installed even in narrow places and on narrow roads.

Further, by discharging the fluid stored in the tank, such as water containing anti-rust agent, the device can be easily and easily moved in a lightweight state.

It has various effects such as

[Brief explanation of drawings]

1 to 3 show an aerial work vehicle according to an embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a plan view, and FIG. 3 is a side view. 1...Base, 10a...Fluid tank, 15...
...Lifting member, 11...Wheel, 20...Multi-stage telescoping tube, 20a...Telescopic tube member, 22...Telescopic ladder, 30...Working table.

Claims (1)

[Claims for Utility Model Registration] 1. A movable base with a built-in fluid pump, a multi-stage telescoping tube that is held upright in the shape of the base and can be expanded and contracted by fluid pressure, and a movable base that is attached to the tip of the telescoping tube. A high-altitude working device consisting of a work platform has a plurality of fluid tanks arranged in at least three directions of the base, and the fluid in the tanks is configured to be able to flow into the telescopic tube via the fluid pump. Additionally, an apparatus for working at high places, characterized in that the fluid tank is configured to be able to come into contact with and leave the base installation surface via an elevating member. 2. The apparatus for working at high places according to claim 1, wherein the liquid filled in the fluid tank is water containing a rust preventive agent.