JP2523792Y2 - Aerial work vehicle - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to an aerial work vehicle in which a workbench is raised and lowered by a telescopic support standing on a trolley. (Prior Art) As shown in FIG. 3, this type of aerial work vehicle is constructed by sequentially fitting a hollow tube 2, 3 at a distal end side to a hollow tube 1 at a proximal end so as to be extendable and retractable. The telescopic strut A driven to expand and contract by a device (not shown) is connected to the base end of the telescopic strut A (the hollow cylinder 1).
Is fixed to the front end or the rear end of the bogie B to stand upright, and the work is performed by positioning the base end of the hollow cylinder 3 at the foremost side of the telescopic strut A above the bogie B. The base C is attached. The hollow cylinder 3 at the forefront side of the telescopic strut A
A box 5 for mounting an operation unit 4 for controlling the ascending and descending of the work table C (extension and contraction of the telescopic column A) and the steering and movement of the cart B is disposed on the side of the tip of the work table C.
The operation of the aerial work vehicle can be controlled by operating the operation unit 4 mounted on the upper side of the box 5 by an operator riding on the box 5.

In the conventional aerial work vehicle configured as described above, the worker on the work table C lifts and lowers the work table C, and
Can be moved in any direction, and is widely used for indoor ceiling construction and the like.

By the way, in the conventional aerial work vehicle shown in FIG. 3, the existence of the box 5 for mounting the operation unit 4 arranged on the side of the tip of the hollow cylinder 3 on the forefront side is the effective floor area of the worktable C. (The floor area of the worktable C where the worker can move freely),
There is a problem that the floor area is limited, and a configuration shown in FIG. 4 can be considered as an aerial work vehicle that solves this problem.

In FIG. 4, a cover member 6 for covering the upper opening of the hollow cylinder 3 on the most distal side of the telescopic column A is detachably attached to the hollow cylinder 3 by an appropriate means such as a screw. The lid 6 is provided with an operation unit 4 for controlling the lifting and lowering of the work table C and the steering and movement of the cart B. The operation unit 4
As shown in FIG. 2, it is composed of a work platform elevating operation unit 7, a trolley steering operation unit 8, and a trolley traveling operation unit 9. The workbench elevating operation unit 7 is configured to extend and drive the telescopic strut A by operating the operating lever 7a and a telescopic driving device of the telescopic strut A in response to the tilting of the operating lever 7a from the neutral position to one side. And an electric signal output unit 7b for outputting an electric signal and outputting an electric signal for driving the telescopic strut A to contract by driving the telescopic strut A in response to tilting to the other side. The bogie steering operation unit 8 includes an operation lever
8a and an electric signal for driving the steered wheels of the bogie B to one side in response to the tilting of the operation lever 8a to one side from the neutral position, and the bogie B in response to the tilting to the other side. And an electric signal output section 8b that outputs an electric signal for steering the other of the steered wheels to the other side. The truck traveling operation unit 9 outputs an electric signal for driving the drive wheel of the truck B forward in response to the operation lever 9a and the tilt of the operation lever 9a from the neutral position to one side, and tilts to the other side. And an electric signal output section 9b for outputting an electric signal for driving the drive wheels of the truck B backward.

The work platform elevating operation unit 7, the trolley steering operation unit 8, and the trolley traveling operation unit 9 in the operation unit 4 have operation levers 7a, 8a, and 9a respectively protruding above the lid member 6 and their electric signals. The output units 7b, 8b, and 9b are attached to the lid member 6 so that all or a part of the output units are located below the lid member 6. Therefore, a space D accommodating all or a part of the electric signal output units 7b, 8b, and 9b is provided between the lower surface of the lid member 6 and the upper part of the hollow cylinders 1 and 2 other than the hollow cylinder 3 on the foremost side. There is. Power is supplied to the operation unit 4 from the battery 10 mounted on the cart B from the telescopic support A
This is performed via an electric cable 11 (such as a helical telescopic cable) arranged in the telescopic strut A so as to expand and contract following the expansion and contraction of the electric signal.
Output electric signals from b, 8b, and 9b are transmitted to the control device 12 disposed on the truck B via the electric cable 11. The control device 12 is connected to each electric signal output unit.
The drive of the corresponding actuator is controlled in accordance with the output electric signals from 7b, 8b, and 9b.

With this configuration, it is not necessary to attach a structure such as a box 5 projecting laterally to the hollow cylinder 3 to the hollow cylinder 3 at the foremost end projecting upward from the floor surface of the worktable C. The effective floor area of the worktable C can be used to the maximum.

(Problems of the prior art) However, the conventional aerial work vehicle which is capable of maximally utilizing the effective floor area of the worktable C has a lower surface of the lid member 6 and a hollow at the foremost side. Between the hollow cylinders 1 and 2 other than the cylinder 3, electric signal output units 7b, 8b,
And a space D accommodating all or a part of 9b,
There is a problem that the length of expansion and contraction becomes small.

This invention solves the above-mentioned problems of the prior art, and provides a new aerial work vehicle capable of maximizing the length of expansion and contraction while maximizing the effective floor area of the worktable C. The purpose is to do so.

(Means for solving the problems) In order to achieve the above object, the aerial work vehicle of the present invention
In a high-altitude work vehicle provided with an operating unit for controlling the lifting and lowering of a worktable and the steering and movement of a bogie on a lid member covering an upper opening of a hollow cylinder at the foremost side of the telescopic strut, The upper end of the hollow cylinder in which the hollow cylinder on the outer side is telescopically fitted is higher than the height on the opposite work table side with a slide shoe or roller attached to the outside of the hollow cylinder on the outermost side to slide or roll. By configuring the height of the worktable side to be low, a space is formed below the worktable side of the lid member, and at least a part of the operation unit is arranged so as to be located in the space. .

(Operation) According to the above configuration, the upper end portion of the hollow cylinder on which the hollow cylinder at the most distal end of the telescopic strut is telescopically fitted is in sliding or rolling contact with the inner surface of the hollow cylinder at the most distal end on the outside thereof. By configuring the height of the work table side lower than the height of the work table side to which the slide shoe or the roller is attached, a space is formed below the work table side of the lid member, and at least the operation unit A part is arranged to be located in this space. The upper end of the hollow cylinder in which the hollow cylinder on the foremost side of the telescopic strut is telescopically fitted, while arranging the operation unit on the upper surface of the telescopic strut,
Can be high.

(Embodiment) An embodiment of the aerial work vehicle of the present invention will be described below with reference to FIG.

The aerial work vehicle of the present invention is characterized in that the configuration of the telescopic strut A is changed as compared with the conventional aerial work vehicle shown in FIGS. 2 to 4 and described above. The symbols 1 to 13 and A to C described above, except for, are used as synonyms in the following description.

The upper end of the hollow cylinder 2 in which the hollow cylinder 3 on the most distal side of the telescopic column A is telescopically fitted is provided with a slide shoe or roller 13 that slides or rolls on the inner surface of the hollow cylinder on the most distal side.
By setting the height on the worktable C side to be lower than the height on the opposite worktable side to which the is attached, a space E in which the hollow cylinder 2 does not exist is formed below the worktable C side of the lid member 6. Electrical signal output units 7b, 8b, 9b protruding below the lid member 6 of the operation unit.
Is secured. The worktable C side at the upper end of the hollow cylinder 2 in which the hollow cylinder 3 on the foremost side of the telescopic column A is telescopically fitted, presses the worktable C against the inner surface of the hollow cylinder 3 on the foremost side based on its own weight. There is no problem, so there is no problem even if this part is cut out. Further, in this embodiment, the corresponding portion of the hollow cylinder 1 is also configured in the same manner as the hollow cylinder 2. The worktable C side portion in the above may be configured so as not to protrude above the hollow cylinder 2 configured as described above.

When the operation unit 4 attached to the lid member 6 is operated, the aerial work vehicle configured as described above can control lifting and lowering of the work table C (expansion and contraction of the telescopic column A) and steering and movement of the bogie B. It is possible to facilitate indoor ceiling work.

Further, the operating section 4 is connected to the hollow cylinder 3 on the most distal side of the telescopic column A.
The upper end of the hollow cylinder 2 in which the hollow cylinder 3 at the foremost side of the telescopic strut A is telescopically fitted to the lid member 6 covering the upper end opening of Slide shoes or rollers that slide or roll on the inner surface of the cylinder
The height on the side opposite to the workbench where the 13 is attached can be increased, so the length of expansion and contraction can be increased.

(Effect) The aerial work vehicle of the present invention configured as described above is a work platform C
Member 6 that covers the upper end opening of the hollow cylinder 3 at the foremost side of the telescopic strut A so that the effective floor area of the vehicle can be used to the maximum.
The telescopic strut A has a structure in which the operation unit 4 is attached to the
Since the length of expansion and contraction can be increased, there is an effect that the work vehicle at a height can be reduced in size.

[Brief description of the drawings]

FIG. 1 is a side view of an aerial work vehicle showing an embodiment of the aerial work vehicle of the present invention. 2 to 4 show a conventional aerial work vehicle, FIG. 2 is an enlarged view taken along the line XX of FIG. 4, and FIGS. 3 and 4 are diagrams of the aerial work vehicle. It is a side view. Telescopic strut: A, hollow cylinder: 1, 2, 3, trolley: B, workbench: C, operation unit: 4, box: 5, lid member: 6, space: D, E

Claims (1)

(57) [Scope of request for utility model registration] 1. A telescopic strut constituted by sequentially fitting a hollow tube at a distal end side to a hollow tube at a base end side so as to be extendable and retractable, and fixing a base end portion of the telescopic strut to a front end portion or a rear end portion of a bogie. At the base end of the hollow cylinder on the foremost side of this telescopic strut,
An aerial work vehicle having a work table mounted above a carriage, wherein the cover member covers an upper opening of a hollow cylinder at the foremost side of the telescopic support, and the work table is lifted, steered and moved. In an aerial work vehicle provided with an operation unit for controlling the upper end, the upper end of the hollow cylinder in which the hollow cylinder at the foremost side of the telescopic strut is telescopically fitted is slid on the outer surface of the hollow cylinder on the foremost side. By configuring the height of the worktable side lower than the height of the worktable side to which a slide shoe or a roller that contacts or rolls is attached, a space is formed below the worktable side of the lid member, A high-altitude working vehicle, wherein at least a part of the operation unit is disposed in the space.