JP2541507Y2 - Aerial work vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerial work vehicle, particularly an aerial work vehicle for a building or the like.

[0002]

2. Description of the Related Art In recent years, self-propelled aerial work vehicles have rapidly become widespread and diversified. Among those that can run at right angles, scaffolds that protrude from the front and rear or left and right of the main body can be installed as options, demonstrating the power of welding work near the outer periphery of the building, mounting of the outer wall, and sealing work.

[0003]

[Problems to be solved by the present invention] However, recent office buildings and research buildings often use sideways windows, and in that case, there is a restriction on the use of a protruding scaffold required for external wall-related works. is there. That is, in the case of a horizontal window, the height of the opening is only about 1,000 to 1,500 mm, and the height of the scaffold to be protruded is limited. On the other hand, the height of the wall portion to be worked is approximately 2,300 to 2,600 mm, and as a result, there is a limit to the work that can be performed on the protruding scaffold portion. Therefore, the work is performed in an unstable posture on the protruding scaffold, and in a portion where the work cannot be performed from the protruding scaffold, there is a problem in terms of efficiency, safety, and quality control, such as working while protruding from the upper floor. .

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a safe work platform with a wide working area on an outer wall at a high place. It is intended to provide.

[0005]

In order to achieve the above object, the present invention provides a vehicle having a first lift mechanism on a traveling carriage .
The main scaffolds with handrail provided on the front end of the main scaffold main
Provide a space to accommodate the outer wall when the scaffold rises and separate
Position, a handrail- equipped scaffold with a second elevating mechanism is provided , and a fall prevention device is provided on the main scaffold.
It is composed of an aerial work vehicle equipped with it.

[0006]

[Function] The aerial work vehicle of the present invention is provided on a traveling trolley,
By providing a handrail at the front end of the main scaffold provided with the first elevating mechanism and a protruding scaffold provided with the second elevating mechanism, the protruding scaffold moves up and down together with the handrail separately from the main scaffold. . In addition, by providing a space on the upper surface of the main scaffold at the front end of the handrail of the main scaffold for accommodating the outer wall when the main scaffold is raised, the first lifting / lowering mechanism of the main scaffold is operated to reduce the handrail of the main scaffold. The level of the upper surface of the main scaffold can be raised to the lower end of the outer wall without interfering with the outer wall.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, a traveling vehicle 1 is stopped on a floor 2 in the vicinity of an outer wall 3. The outer wall 3 is an outer wall of a building or the like, and targets those under construction and after construction. On the traveling trolley 1
The main scaffold 6 is installed via the first lifting mechanism 4. No.
The lifting mechanism 4 includes a link mechanism 5 and a cylinder 9. Of the links 5a to 5d of the link mechanism 5, the link 5
a is rotatably attached to the left end of the traveling vehicle 1, and a lower end of the link 5b is a sliding groove (not shown) provided in the traveling vehicle 1.
To be able to move horizontally. The upper end of the link 5d is rotatably attached to the left end of the main scaffold 6, and the upper end of the link 5c is horizontally movably attached to a sliding groove (not shown) provided in the main scaffold 6. The links 5a and 5b are provided in a pair on the left and right on the traveling vehicle 1, and the pair of links 5
a and 5b are connected by a pin shaft 7 at the center thereof. The left and right links 5a are connected by a joining material 8, and a tip of a cylinder 9 is rotatably fixed near the center of the joining material 8. The link mechanism 5 expands and contracts up and down by the operation of the cylinder 9. The scaling of the link mechanism 5, the first
The first lifting mechanism 4 vertically displaces the main scaffold 6 to adjust the level of the main scaffold 6. In order to adjust the height of the main scaffold 6 to the cylinder 9 steplessly, for example, a hydraulic adjustment mechanism can be provided. The main scaffold 6 is provided with a handrail 10 for worker safety. A space 21 for raising the main scaffold 6 is provided at the front end of the handrail 10. The width of the space 21 is mainly
When the scaffold 6 is raised, the outer wall 19 can be accommodated in the space 21.
The thickness of the outer wall.

At the front end of the main scaffold 6, a protruding scaffold 12 having a second elevating mechanism 11 is provided. When the traveling vehicle 1 also travels in the lateral direction, the front end of the main scaffold 6 in the present invention includes only the side end of the main scaffold 6. Attachment to the main scaffold 6 of protruding scaffolding 12, in this example, first of overhang scaffold 12
This is performed by detachably attaching the sub-frame 13 supporting the lifting mechanism 11 to the main scaffold 6 with the joint hardware 14. Second elevating mechanism 11 of projecting scaffold 12
Has the same mechanism as in the case of the main scaffold 6, and has links 15,
It has a joint member 16, a link 16a, and a cylinder 17.
The cylinder 17 can have a height adjusting function. The protruding scaffold 12 has a handrail 18. The worker on the protruding scaffold 12 can perform work such as welding on the work surface A outside the outer wall 19 by raising the protruding scaffold 12.

This embodiment will be described in comparison with a case where the main scaffold 6 itself is simply extended forward to form a protruding scaffold. In this case, it is necessary to place a step on the projecting scaffold so that the worker can work on the entire work surface of the outer wall. Then, for safety of the worker, the handrail must be raised by the height of the step. When the handrail becomes high, the working space between the outer wall 3 and the outer wall 19 must be increased in order to protrude the projecting scaffold out of the outer wall. In other words, in a narrow work space, there is a restriction that the work cannot be performed while adjusting the height of the scaffold. The aerial work vehicle of the present invention has such advantages that there is no need to install and remove such a step, it is not necessary to increase the handrail, and it can be used even in a small work space.

For example, a cylinder device for pressing the ceiling 23 on the main scaffold 6 is installed as the overturn prevention device 22 for the aerial work vehicle of the present invention. In addition, for operation of aerial work vehicles,
An operation box 24 is provided. It is convenient for the traveling cart 1 to be self-propelled.

Next, the operation of the aerial work vehicle of the present invention will be described with reference to FIGS. (1) The traveling cart 1 of the aerial work vehicle is moved on the floor surface 2 to approach the outer wall 19 (FIG. 2A). (2) The main scaffold 6 is raised by the first elevating mechanism 4, so that the protruding scaffold 12 can be extended through the work space between the outer wall 3 and the outer wall 19 (FIG. 2B). (3) The traveling trolley 1 is advanced, and the traveling trolley 1 is stopped at a position where the protruding scaffold 12 protrudes from the outer wall 19 (FIG. 2C). (4) On the upper surface of the main scaffold 6 at the front end of the handrail 10 of the main scaffold 6
A space 21 for accommodating the outer wall when the main scaffold 6 is raised
The outer wall 19 in the space 21 at the front end of the handrail 10.
The main scaffold 6 of the traveling trolley 1 is raised by the first lifting mechanism 4 so that the upper surface level of the main scaffold 6 is
Stop when it reaches the lower end of 9 (FIG. 2 (d)). (5) The piston 23 of the cylinder which is the overturn prevention device 22 of the traveling vehicle 1 is raised, and the ceiling 23 supported by the girder 20
When it reaches, it is stopped and fixed (Fig. 2 (e)). (6) The worker moves to the projecting scaffold 12 outside through the space between the base frames of the outer wall 19 (FIG. 3A). (7) The projecting scaffold 12 is raised by operating the second elevating mechanism 11, and the worker performs welding or the like on the work surface A of the outer wall 19 (FIG. 3B).

[0012]

[Effect of devised the present invention, as described above, high-gesture
The industrial vehicle has a main scaffold having a first lifting mechanism and a second lifting mechanism.
Since the configuration provided with a protruding scaffolding with a work area of the outer wall by Aerial spread significantly. Further, since the height of the protruding scaffold can be adjusted regardless of the height of the aerial work vehicle body, the installation is facilitated. In addition, the handrail of the protruding scaffold moves up and down together with the protruding scaffold, so that work safety can be secured. Further, if a stepless height adjustment function is added to the raising / lowering mechanism of the protruding scaffold, an optimum working posture can be always taken. Further, since the traveling cart is provided with the overturn prevention device, further safety of the work can be achieved. The aerial work vehicle of the present invention is particularly suitable for building
Can be useful for business.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram illustrating the operation of the aerial work vehicle of the present invention.

FIG. 3 is a view for explaining the operation of the aerial vehicle of the present invention following the operation of the aerial vehicle shown in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Traveling trolley 2 Floor surface 3 Outer wall 4 First raising / lowering mechanism 5 Link mechanism 6 Main scaffold 7 Pin shaft 8 Splicing material 9 Cylinder 10 Handrail 11 Second lifting / lowering mechanism 12 Projection scaffold 13 Sub-frame 14 Joint hardware 15 Link 16 Joint Material 16a Link 17 Cylinder 18 Railing 19 Outer wall 20 Beam 21 Space 22 Fall prevention device 23 Ceiling 24 Operation box A Work surface

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Ryuichi Yanagida 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (56) References JP-A-49-32393 (JP, A) Sho Akai 58-39935 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A through the first elevating mechanism on the traveling carriage,
A main scaffold having a handrail is provided, and the main scaffold is provided at a front end of the main scaffold.
Provide a space to accommodate the outer wall when the scaffold rises and separate
A rail having a handrail with a second lifting mechanism in position
An aerial work vehicle provided with a projecting scaffold and a fall prevention device provided on the main scaffold .