JPH0530090U - Work platform of aerial work platform - Google Patents

Abstract

(57) [Abstract] [Purpose] By expanding and contracting the cylinder, the movable floor and the movable handrail slide on the fixed floor and the fixed handrail to make the planar shape a large area or a small area. [Structure] A fixed floor 7, a movable floor 8 that juts out in the left-right direction along the fixed floor 7, and is retracted, a cylinder 9 connected between the fixed floor 7 and the movable floor 8, both front and rear sides of the fixed floor 7. And a movable handrail 11 provided on the movable floor 8. The upper horizontal member 22 of the movable handrail 11 is formed into a U shape in a plan view and slides on both ends and the upper horizontal member 20 of the fixed handrail 10. By freely connecting and expanding and contracting the cylinder 9, the movable floor 8 and the movable handrail 11 can be slid to make the planar shape a large area or a small area.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a workbench of an aerial work vehicle used at a construction work site or the like.

[0002]

[Prior Art]

 An aerial work vehicle has a workbench mounted on a traveling carriage so that it can be raised and lowered by an elevating mechanism. It is advantageous to widen the work range as an area. For example, as shown in Japanese Utility Model Laid-Open No. 3-50157, expansion floorboards are foldably attached to both sides of a central floorboard, and handrails are foldably attached between the extension floorboard and the central floorboard so as to be extended when traveling. A workbench is known in which the floorboard and handrails are folded and the extension floorboard and handrails are extended during work.

[0003]

[Problems to be solved by the device]

 With such a workbench, the floor plate for expansion and the handrail are foldable, so the structure is complicated, especially the structure of the handrail is complicated, and it is difficult to operate because they are manually expanded and folded. Be troublesome.

Therefore, an object of the present invention is to provide a workbench of an aerial work vehicle that can solve the above-mentioned problems.

[0005]

[Means for Solving the Problems]

 The fixed floor 7, a movable floor 8 that juts out in the left-right direction along the fixed floor 7 and is retracted, a cylinder 9 connected between the fixed floor 7 and the movable floor 8, and the front and rear sides of the fixed floor 7 are provided. An aerial work vehicle comprising a fixed handrail 10 and a movable handrail 11 provided on the movable floor 8, and an end portion of the upper horizontal member 22 of the movable handrail 11 and an upper horizontal member 20 of the fixed handrail 10 are slidably connected. Workbench.

[0006]

[Work]

 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 moves with the movable floor 8. Since the fixed handrail 10 slides on the horizontal member 20, the worktable 6 can be made large or small by a simple operation of expanding and contracting the cylinder 9.

[0007]

【Example】

 As shown in FIGS. 1 and 2, a pair of links 2 and 2 are connected to a traveling carriage 1 by a pin 3 in an X-shape, and an elevating mechanism 5 composed of a telescopic link mechanism that is telescopically operated by a cylinder 4 is used as a workbench. 6 is mounted so that it can be raised and lowered. As shown in FIG. 3, the workbench 6 includes a fixed floor 7, a pair of movable floors 8 and 8 mounted on the fixed floor 7 so as to be slidable left and right, and a cylinder 9 for extending and retracting the movable floor 8. It consists of 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 has a floor plate 13 mounted between the upper surfaces of a pair of front and rear cross members 12, 12. The cross member 12 has a U-shaped cross section and has a guide rail portion 14. The movable floor 8 has a flat plate shape, and a guide roller 15 is attached to the front and rear end edges of the movable floor 8. It is rollable along the rails 14. The cylinder 9 is provided on a bracket 16 fixed to the lower surface of the floor plate 13 and has a pair of rods 17, the rods 17 of which are connected to a bracket 18 fixed to the movable floor 8. The fixed handrail 10 is composed of a pair of left and right columns 19 and 19 standing upright on both front and rear sides of the fixed floor 7, and a pair of upper and lower cross members 20 extending between the pair of left and right columns 19 and 19. The upper cross member 20 has a hollow pipe shape and faces the front-rear direction. The movable handrail 11 is composed of a pair of front and rear columns 21 and 21 erected on the front and rear projecting ends of the movable floor 8 and an upper cross member 22 extending horizontally between the pair of front and rear columns 21 and 21. The horizontal member 22 has a U-shape in a plan view, and both end portions 22a, 22a are slidably fitted in a pair of front and rear upper horizontal members 20.

Next, the operation will be described. As shown in FIG. 4, when the rod 17 of the cylinder 9 is contracted, the movable floor 8 is retracted to the fixed floor 7 side 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 overhangs with the movable handrail 11 and the planar shape becomes a large area. Fluid pressure is supplied to the pressure receiving chamber for expanding and contracting the rod 17 of the cylinder 9 by an operation valve, for example, an electromagnetic operation valve, which is switched by operating an operation member of an operation panel 23 provided on the fixed floor 7. .

[0009]

[Effect of the device]

 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 moves with the movable floor 8. Since the fixed handrail 10 slides with respect to the horizontal member 20, the plane shape of the workbench 6 can be made large or small by a simple operation of expanding and contracting the cylinder 9, and the structure can be simplified. it can.

[Brief description of drawings]

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

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

FIG. 3 is a perspective view of a workbench.

FIG. 4 is a front view of a workbench.

FIG. 5 is a front view of a workbench.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Traveling vehicle, 5 ... Elevating mechanism, 6 ... Workbench, 7 ... Fixed floor, 8 ... Movable floor, 9 ... Cylinder, 10 ... Fixed handrail, 11
... Movable handrail, 20 ... Upper horizontal member, 22 ... Upper horizontal member.

Claims (1)

[Scope of utility model registration request] 1. In a high-altitude work vehicle in which a work platform 6 is provided on a traveling carriage 1 so as to be lifted and lowered by an elevating mechanism 5, a fixed floor 7 and a movable floor 8 which extends laterally along the fixed floor 7 and is retracted. A cylinder 9 connected between the fixed floor 7 and the movable floor 8, fixed handrails 10 provided on the front and rear sides of the fixed floor 7, and a movable handrail 11 provided on the movable floor 8, and the movable handrail 11 A workbench of an aerial work vehicle, characterized in that an end portion of the upper horizontal member 22 of the above and the upper horizontal member 20 of the fixed handrail 10 are slidably connected.