JP2540657Y2 - Work platform for 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 a workbench for an aerial work vehicle used at a construction work site or the like.

[0002]

2. Description of the Related Art An aerial work vehicle is one in which a work table is mounted on a traveling vehicle so as to be able to move up and down by a lifting mechanism. It is advantageous to increase the work range by making the planar shape large. For example, 3-5
As shown in Japanese Patent No. 0157, an extension floor plate is foldably attached to both sides of the central floor plate, and a handrail is foldably attached to the expansion floor plate and the central floor plate so that the extension floor plate and the handrail are folded during traveling. 2. Description of the Related Art There is known a work table in which an extension floor plate and a handrail are overhanged during work.

[0003]

In such a work table, since the expansion floor plate and the handrail are freely foldable, not only the structure becomes complicated, but also the structure of the handrail becomes complicated.
Since they are manually expanded and folded, the operation becomes very troublesome.

Accordingly, an object of the present invention is to provide a workbench for an aerial work vehicle capable of solving the above-mentioned problems.

[0005]

Means for Solving the Problems A fixed floor 7 and a movable floor 8 extending and retracting along the fixed floor 7 in the left-right direction.
And a cylinder 9 connected across the fixed floor 7 and the movable floor 8
Fixed handrails 10 provided on both front and rear sides of the fixed floor 7,
A movable handrail 11 provided on the movable floor 8; an end of an upper cross member 22 of the movable handrail 11 and an upper cross member 20 of the fixed handrail 10;
Work platform for aerial work vehicles that are slidably connected to each other.

[0006]

[Operation] By expanding and contracting the cylinder 9, the movable floor 8 can be extended or retracted with respect to the fixed floor 7 to increase or decrease the planar shape, and the upper cross member 22 of the movable handrail 11 can be moved. 8 and slides with respect to the upper cross member 20 of the fixed handrail 10, so that the planar shape of the worktable 6 can be made large or small by a simple operation of expanding and contracting the cylinder 9.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a pair of links 2 and 2 are connected to a traveling vehicle 1 in an X-shape by pins 3 and a telescopic link mechanism is operated by a cylinder 4. A worktable 6 is attached by a mechanism 5 so as to be able to move up and down. As shown in FIG. 3, the work table 6 includes a fixed floor 7, a pair of movable floors 8 and 8 slidably mounted on the fixed floor 7, and a cylinder 9 for extending and retracting the movable floor 8. It comprises a fixed handrail 10 provided on the fixed floor 7 and a movable handrail 11 provided on the movable floor 8. The fixed floor 7 is a pair of front and rear cross members 12, 1.
A floor plate 13 is attached across the upper surface of the base 2, the cross member 12 has a U-shaped cross section and has a guide rail portion 14, and the movable floor 8 has a flat plate shape, and has a front and rear edge. A guide roller 15 is mounted, and the guide roller 15 is free to roll along the guide rail 14. The cylinder 9 includes a bracket 16 fixed to the lower surface of the floor plate 13.
And a pair of rods 17.
Are connected to a bracket 18 fixed to the movable floor 8.
The fixed handrail 10 includes a pair of right and left columns 19, 19 erected on both front and rear sides of the fixed floor 7, and a pair of right and left columns 19, 1.
It consists of a pair of front and rear upper members 20 laid horizontally between the nine members, and the upper member 20 has a hollow pipe shape and faces in the front and rear direction. The movable handrail 11 includes a pair of front and rear columns 21 and 21 erected at projecting ends on both front and rear sides of the movable floor 8, and an upper cross member 22 laid between the pair of front and rear columns 21 and 21. The material 22 has a flat U-shape and has both ends 22a, 22a.
Are slidably fitted into a pair of front and rear upper members 20.

Next, the operation will be described. As shown in FIG.
When the rod 17 of the cylinder 9 is contracted, the movable floor 8 is retracted toward the fixed floor 7 together with the movable handrail 11, and the planar shape becomes a small area. As shown in FIG. 5, when the rod 17 of the cylinder 9 is extended, the movable floor 8 projects together with the movable handrail 11, and the planar shape becomes large. Fluid pressure is supplied to the pressure receiving chamber which expands and contracts the rod 17 of the cylinder 9 by an operation valve which is switched by operating an operation member of an operation panel 23 provided on the fixed floor 7, for example, an electromagnetic operation valve.

[0009]

The movable floor 8 can be extended or retracted with respect to the fixed floor 7 by extending or retracting the cylinder 9 to enlarge or reduce the planar shape, and the upper cross member 22 of the movable handrail 11 can be moved. Since it moves with the floor 8 and slides with respect to the upper cross member 20 of the fixed handrail 10, the plane shape of the work table 6 can be made large by a simple operation of expanding and contracting the cylinder 9,
The area can be reduced and the structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a front view of an aerial work vehicle.

FIG. 2 is a side view of the aerial work vehicle.

FIG. 3 is a perspective view of a work table.

FIG. 4 is a front view of a work table.

FIG. 5 is a front view of a work table.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Truck, 5 ... Elevating mechanism, 6 ... Work table, 7 ... Fixed floor, 8 ... Movable floor, 9 ... Cylinder, 10 ... Fixed handrail, 11
... movable handrail, 20 ... upper cross member, 22 ... upper cross member.

Claims (1)

(57) [Scope of request for utility model registration] 1. An aerial work vehicle in which a work platform 6 is provided on a traveling carriage 1 so as to be movable up and down by an elevating mechanism 5. A fixed floor 7 and a movable floor 8 extending and retracting in the left and right direction along the fixed floor 7. A cylinder 9 connected between the fixed floor 7 and the movable floor 8, a fixed handrail 10 provided on both front and rear sides of the fixed floor 7, and a movable handrail 11 provided on the movable floor 8; A workbench for an aerial work vehicle, wherein an end of the upper cross member 22 and the upper cross member 20 of the fixed handrail 10 are slidably connected.