JPH0420877Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field The present invention relates to an apparatus for working at high places with excellent workability.

(2) Prior Art A high-altitude working device equipped with two work platforms at the tip of a boom is conventionally known as described in, for example, Japanese Utility Model Application Publication No. 133898/1983.

(3) Problems that the invention aims to solve However, although conventional high-altitude work equipment is suitable for workers to perform work on each work platform, it is difficult to place workers on only one work platform. When working with a worker on board, the other workbench that the worker is not on may become an obstacle, making it impossible for the workbench on which the worker is on to approach the work position, or preventing storage of the workbench. The problem was that it required a large amount of space.

(4) Means for Solving the Problems In order to solve the above problems, the present invention provides an aerial work device equipped with a pair of box-shaped work platforms having upward openings at the tip of the boom. At least one of the workbenches can be moved up and down, and one or the other workbench can be inserted into the other or one of the workbenches.

(5) Effect With the above configuration, when working on one workbench or storing the workbench, one or the other workbench can be fitted into the other or one of the workbench to make it integral. When working on two workbenches, separate the workbenches and work from each workbench.

(6) Examples Examples of the present invention will be described below with reference to the drawings.

As shown in Figures 1 and 2, a post 2 is pivotably supported in the vertical direction at the tip of a boom 1 that bends and expands, and the post 2 is pivoted at both ends to the boom 1 and the post 2. By expanding and contracting the balance holding cylinder 3, the boom 1 is always maintained in a balanced state regardless of its angle. The base ends of two upper and lower arms 4 and 5 are pivotably supported on the post 2 so as to be able to swing in the horizontal direction, and the arm 4 that is pivoted above the post 2 is the arm that is pivoted below the post 2. 5, each arm 4,5 has a drive device 6,7 with a hydraulic motor.
They each oscillate independently. A workbench 8 is attached to the tip of the arm 4 so that it can be raised and lowered by sliding only in the range above the reference position, and a workbench 9 is attached to the tip of the arm 5 so that it can be raised and lowered by sliding only in the range below the reference position. Each work platform 8, 9 slides independently by a drive device (not shown) such as a hydraulic cylinder, and each work platform 8, 9 moves the post 2 by swinging each arm 4, 5. Move on the same circumference centered on the center. The workbench 8 is smaller than the workbench 9 and can fit into the workbench 9.

With the above configuration, when performing high-place work using two workbenches, the workbench 8 can be slid upward from the state shown in FIG. , the arm 4 is swung around the post 2 to separate the workbench 8 from the workbench 9, the workbench 8 is slid downward and the workbench 9 is slid upward, and as shown in FIG. As shown, both workbenches 8 and 9 are positioned at reference positions, and workers are placed on both workbenches 8 and 9 to perform work.

Next, when performing high-altitude work using only one workbench or storing the workbench, from the state where both workbench 8 and 9 are located at their respective reference positions as shown in FIG. By sliding the workbench 8 upward, sliding the workbench 9 downward, and swinging both arms 4 and 5 or one arm around the post 2, the workbench 8 is placed on the workbench 9. In this state, either slide the workbench 8 downwards or slide the workbench 9 upwards to fit the workbench 8 into the workbench 9 and integrate it into the workbench 8.
The work will be carried out with a worker on board.

(7) Effects of the invention As described above, according to the invention, one workbench can be inserted into the other workbench and work can be performed using only one workbench, or the workbench can be When storing the workbench, one workbench can be inserted into the other workbench so that the workbench is always close to the work position and only takes up the space of one workbench. Provided is an aerial work device that can store both work platforms.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Figure 1 is a side view of the main part showing both work platforms of the high-altitude working device separated, and Figure 2 is a side view of the main parts showing both work platforms of the high-altitude working device integrated. FIG. 3 is a side view of main parts showing the state. 1... Boom, 4, 5... Arm, 8, 9...
Workbench.

Claims (1)

[Scope of utility model registration request] In an aerial work device equipped with a pair of box-shaped work platforms having upward openings at the tip of the boom, at least one of the work platforms can be raised and lowered freely, and
A high-place work device characterized in that one or the other workbench can be freely inserted into the other or one of the workbench.