JP2541779Y2 - Boom type aerial work vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a high place used in a building or an orchard where a boom having a telescopic mechanism and an elevating mechanism is mounted on a work table and the work table is arranged at the end of the boom. The present invention relates to a configuration of a working vehicle.

[0002]

2. Description of the Related Art Conventionally, a technique relating to a boom type aerial work vehicle is known, and as shown in FIG. From the position of the work table 2 when the boom 3 is extended forward to the maximum, the position of the height H ′ above the traveling vehicle 1 that has turned the boom 3 upward, and the height of the highest position This is from the position at which the boom 3 is reduced from H ′ and the work table 2 is moved rearward to the position where the boom 3 is rotated downward and returned to the horizontal position.

[0003]

However, in the conventional working range, the boom 3 must be reduced above the rear end of the traveling vehicle 1, and work at the rear cannot be performed without moving the traveling vehicle 1 backward at the highest position. There was no. Then, even when the boom 3 is turned to the highest position, the boom 3 cannot be turned to the vertical position so as not to fall down.
Therefore, an object of the present invention is to extend the working range of a workbench and reduce the movement of a traveling bogie in a telescopic boom type aerial work vehicle.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. Pivot the boom 3 on the traveling trolley 1,
The work table 2 is pivoted at the tip of the boom 3 so that it is always horizontal.
The work table 2 is held horizontally by the rotation of the boom 3.
In an aerial work vehicle to be lifted and lowered, the boom 3 is moved to the traveling trolley 1
Is configured to rotate up and down around a pivot shaft 7 provided at
The boom 3 is used when the work platform 2 is placed on the traveling carriage 1.
From a low position, it is at an angle θ from the vertical above the pivot axis 7
To be able to rotate in the opposite direction from the storage position of the work table 2
And the side opposite to the storage position of the work table 2 in the traveling vehicle 1
In addition, the outrigger 16 can be projected and supported .

[0005]

The boom 3 pivotally supported by the bracket 6 at the rear of the traveling carriage 1 of the boom type aerial work vehicle is an up-and-down cylinder interposed between the bracket 8 at the front of the traveling carriage 1 and the boom 3. When the boom 3 is extended to the maximum, the bracket 6 and the pivot shaft 7 for pivoting the boom 3 are inclined backward by a certain angle θ from the vertical direction. It can be raised to a higher position.

[0006]

Next, an embodiment of the present invention will be described. FIG. 1 is a side view of the boom type aerial work vehicle of the present invention. A bracket 6 is provided at the rear part of the traveling vehicle 1, and the lower end of the boom 3 is pivotally supported on the bracket 6 by a pivot 7, and a telescopic boom 3 a is expanded and contracted inside the boom 3. An arm 19 is pivotally supported at the front of the telescopic boom 3a, and a stay 11 pivotally supported by a pivot shaft 10 is pivotally connected to the arm 19, and an upper end of the stay 11 is provided. Work table 2
A bracket 13 projects from the center bottom of the worktable 2, and the tip of the parallel cylinder 5 is pivotally supported by a pivot shaft 14. The lower end of the parallel cylinder 5 is pivotally supported by the pivot 12 together with the telescopic boom 3a and the arm 19, so that the work table 2 is kept horizontal by the parallel cylinder 5 installed on the upper part of the telescopic boom 3a. It is.

[0007] A bracket 8 is provided at the front of the traveling vehicle 1, and the base of the undulating cylinder 4 is pivotally supported on the bracket 8 by a pivot shaft 9.
Of the boom 3
Can move up and down by expanding and contracting the up-and-down cylinder 4. In addition, the traveling vehicle 1 is a front wheel 1
7. Although it is constituted by a tire type traveling device having the rear wheel 18, it may be constituted by a crawler type. An outrigger 16 that can be stored in the traveling trolley 1 is mounted at the rear of the traveling trolley 1 so as to be able to protrude rearward so as to prevent the work trolley 2 from tipping over when it is located rearward.

In such a configuration, the undulating cylinder 4
Is configured so that when extended to the maximum, the boom 3 can rotate backward from the vertical direction of the pivot shaft 7 to a state inclined by a certain angle θ. Can be located more rearward, outrigger 1
6 is within the range supported. When the work platform 2 is located above the pivot shaft 7 of the traveling vehicle 1, the boom 3
Is extended to the maximum, the worktable 2 can be at a position higher by the height H than the conventional height H ′ at the highest position.

That is, the working range A of the telescopic boom type aerial work platform of the present invention by the work platform 2 is as shown in FIG. 1 when the boom 3 is extended to the front of the traveling vehicle 1 in the horizontal state to the maximum. The boom 3 is pivoted upward from the position of the work platform 2 so that the work platform 2 is at a height H ′ at a vertical position of the traveling vehicle 1.
At a position higher than the height H by a predetermined angle θ, the boom 3 is moved rearward by a certain angle θ.
Is reduced, the work table 2 moves toward the traveling vehicle 1, and the boom 3 is turned downward to a position where the work table 2 returns to the horizontal position.

[0010]

[Effects of the Invention] The present invention is configured as described above, and has the following effects. First, since the boom can be pivoted to the upper rear portion of the traveling vehicle, the working range of the traveling platform is widened, the traveling vehicle is less required to move, and an accident due to a collision or the like during the traveling of the traveling vehicle is prevented. The time can be reduced. Second, the worktable can be rotated to a position higher than the conventional maximum position, and the work range can be further widened without increasing the size of the aerial work vehicle.

[Brief description of the drawings]

FIG. 1 is a side view of the boom type aerial work vehicle of the present invention.

FIG. 2 is a side view showing a movement range of a workbench 2 of a conventional boom type aerial work vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling trolley 2 Work table 3 Boom 4 Undulating cylinder 5 Parallel cylinder

Claims (1)

(57) [Scope of request for utility model registration] A boom (3) is pivotally supported on a traveling vehicle (1).
Pivot the work table 2 at the tip of the arm 3 so that it is always horizontal.
Then, the work table 2 is raised in a horizontal state by the rotation of the boom 3.
In the aerial work vehicle to be lowered, the boom 3 is
It is configured to rotate up and down around the pivot shaft 7 provided,
The boom 3 is the minimum position at which the work platform 2 is mounted on the traveling carriage 1.
From the position by an angle θ from the vertical above the pivot axis 7,
It is configured to be rotatable in the opposite direction from the storage position of the worktable 2,
On the side opposite to the storage position of the worktable 2 on the traveling carriage 1,
A boom-type aerial work vehicle, wherein the outriggers 16 can be projected and supported .