JPH0686763B2 - Aerial work equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is equipped with a workbench at the upper end of a support column, and attaches itself to a columnar object having a height such as a utility pole or a tree by itself so as to have an arbitrary height. The present invention relates to an aerial work apparatus that can carry a worker, luggage, etc. to a work place.

(Prior Art) As a device for transporting an operator above a vertically-arranged columnar object such as a utility pole or a tree, a tower wagon provided with an elevating means for a traveling vehicle, a crane, and a bucket are provided. There is a so-called aerial work vehicle.

(Problems to be Solved by the Invention) The aerial work vehicle as described above has excellent maneuverability, but since it is constructed integrally with a traveling vehicle such as a truck or a crane, it cannot be repurposed. This is possible, and since the position of the vehicle or crane is restricted during the work, it is necessary to move the vehicle or the like according to the work position in the case of work over the entire circumference of the columnar object. Furthermore, since it is necessary to stop the work vehicle while approaching the pillar during work, there is a problem that traffic is blocked.

Therefore, an object of the present invention is to allow a worker to be mounted and lifted up and down to an arbitrary height in a state where the worker is attached to a columnar object as a work target, whereby the carrier vehicle can be released at the time of working at a high place. Therefore, it is to provide an aerial work device that can perform a desired work even in a relatively narrow place.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the high-altitude work apparatus of the present invention is a clamp that is rotatable by sandwiching a columnar object to be worked, and a work table is placed on the upper end, It is characterized in that it comprises a column having a lower end attached to one side of the clamp.

(Operation) The support is clamped to the support to attach the entire device in a stable manner, and the workers and work implements are placed on the workbench for the work.
By appropriately rotating the clamp with respect to the supporting column as necessary, the supporting column and the work table can be transported to an arbitrary position on the entire circumference of the support body, enabling efficient work.

(Example) Next, the Example of this invention is described based on drawing. FIG. 1 is a front view of a first embodiment of an aerial work apparatus of the present invention, and FIG. 2 is a plan view of a clamp.

The high-altitude work apparatus A according to the first embodiment has a structure in which a bucket 3 as a work table is placed on the upper end of a column 2 standing on one side of the clamp 1.

As shown in FIG. 2 and FIG. 3, the clamp 1 has an annular inner body 12 which has an engaging portion 12a on its outer peripheral surface and is partially cut away.
And a groove 11a slidably fitted to the engaging portion 12a, which is cut inward and has an annular outer body 11 with a part cut away.

The inner body 12 is provided with a pair of holding members 14 which are provided so as to be able to move forward and backward, and a fluid pressure cylinder 13 which drives the holding members 14 to move forward and backward. Therefore, by operating the cylinder 13, the columnar object S positioned between the clamping members 14 can be clamped.

Further, since the outer body 11 has a built-in rotation drive mechanism 15, the outer body 12 is moved relative to the inner body 11 by driving the drive mechanism 15 while the columnar object S is pressed by the inner body 12. Can be rotated.

The column 2 is expandable and contractable, and is in the front and rear (left and right direction in FIG. 1).
It is fixed to one side of the clamp 1 via a tilting mechanism 16 that can tilt. In addition, the pillar 2 of this embodiment is configured such that the two-stage rods 2a and 2b are formed in a nested shape so that they can be expanded and contracted.
The number of rods is not particularly limited, and the rods are not necessarily nested.

The bucket 3 is fixed to the uppermost end of the column 2, and a swing mechanism 32 is provided on the upper end of the column. The bucket 3 can be rotated by rotating the swing mechanism 32.

Further, since the horizontal maintaining mechanism 31 is formed in the mounting portion of the bucket 3 at the upper end of the support column 2, the bucket 3 can always be kept horizontal even if the support column 2 tilts, and the working environment becomes good. The horizontal maintaining mechanism 31 may be of any type such as one using hydraulic drive or a rope.

Next, the operation of the aerial work apparatus having the above configuration will be described.

An aerial work apparatus A is carried to a work site, and positioned so that an open portion 1c formed on one side of the clamp 1 faces the columnar object S to be worked. Therefore, the columnar object S is inserted into the open portion 1c, positioned between the clamping members 14, 14 and clamped to fix the device A to the columnar object S. Next, a worker is placed on the bucket 3 and the support column 2 is raised to the working height.

To turn the bucket 3 toward the columnar object S, the bucket 3 is rotated when the turning mechanism 32 is rotationally driven in this state.
Therefore, the tilting mechanism 16 is operated to tilt the column 2 slightly backward, and then the turning mechanism 32 is rotationally driven to rotate the bucket 3. As a result, as shown in FIG. 1, the bucket 3 is positioned at an appropriate distance from the columnar object S, and desired work can be performed.

At the time of work, if necessary, the bucket 3 is tilted or rotated, or the column 2 is tilted or expanded or contracted.
Further, the rotation driving mechanism 15 of the outer body 11 of the clamp 1 is operated to rotate the outer body 11 around the columnar object S, whereby the bucket 3 is arranged at a desired position and efficient work can be performed. .

Shown in FIGS. 4 and 5 is a second embodiment of the present invention.

The present embodiment has a structure in which a second clamp 52 is added below the high-altitude work apparatus A of the first embodiment.

Support arm 40 connecting the first clamp 51 and the second clamp 52
Is composed of an upper half portion 40a and a lower half portion 40b, which are connected by a bending joint 42 that can be bent back and forth. Also, the bent joint 42
A drive cylinder 43 for bending the support arm 40 around the center is provided between the upper half 40a and the lower half 40b.

A first clamp 51 is provided on the upper half 40a of the support arm 40, and a second clamp 52 is provided on the lower half 40b. This first
The structures of the clamp 51 and the second clamp 52 are similar to those of the clamp 1 of the first embodiment.

To explain the operation of this embodiment, first, as shown in FIG. 4, in a state where the bending joint 42 of the support arm 40 is bent at a right angle,
The second clamp 52 of the lower half portion 40b of the support arm 40 is held by the holding body H fixed to the loading platform of the truck T, for example. As a result, the entire device B including the support columns 2 and the bucket 3 is reliably placed on the truck T, and therefore it can be transported.

Although it is transported to the work site in this state, in order to attach the high-altitude work apparatus B to the pillar S, first, the first clamp 51 is fixed to the pillar S. Then, the second clamp 52 is loosened to release the holding body H of the track T, and the drive cylinder 43 is operated with the track T separated to extend the bending joint 42. As a result, the support arm 40 becomes vertically straight, and the second clamp
Since the columnar object S intervenes between the clamping members of 52, the cylinder 47,
The columnar object S is clamped by operating 47.

As described above, the entire apparatus B can be attached to the columnar object S by itself from a transportation vehicle such as a truck, and can be stably fixed to the columnar object S by itself.

When the device B is moved to the truck T after the work is completed, the above work procedure may be reversed. Further, when the second clamp 52 is removed from the holder H of the truck carrier, the first clamp 51 is fixedly attached to the columnar object S while the upper half 40a of the support arm 40, which is extendable and contractible, is stretched. Releasing the clamp 52 and retracting the extendable upper half 40a makes the movement from the truck bed relatively easy.

Furthermore, if the expansion / contraction function of the upper half portion 40a is used, one clamp is put in a clamped state and the other clamp is released,
By repeatedly extending and shortening the upper half portion 40a, the columnar object S can be raised or lowered by itself.

(Effects of the Invention) According to the present invention as described above, since the columnar object to be worked can be fixedly held by itself, the transport vehicle can be released at the time of work, and it can also be useful in a narrow work site. The clamp can be rotated around the columnar object to be worked, so that the work efficiency is improved. Further, since it is independent of a transportation vehicle such as a truck, storage management and storage can be easily performed.

[Brief description of drawings]

The drawings show embodiments of the present invention, etc., FIG. 1 is a front view of a first embodiment of an aerial work apparatus according to the present invention, FIGS. 2 and 3 are plan views of a clamp, and FIG. FIG. 4 is a front view showing a moving state from the transport vehicle of the second embodiment, and FIG. 5 is an explanatory view showing a mounting state on the support body of the second embodiment. A, B ... High-altitude work device, 1 ... Clamp 2 ... Post, 3 ... Bucket, S ... Support

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H02G 1/02 7161-5G

Claims (3)

[Claims] 1. An aerial work apparatus comprising a clamp which is capable of gripping and rotating a columnar object to be worked, and a support which has a work table mounted on the upper end and whose lower end is attached to one side of the clamp. 2. An aerial work apparatus according to claim 1, wherein the column is extendable. 3. An aerial work apparatus according to claim 1 or 2, wherein the work table is rotatably formed, and the column is tiltable.