JPH08295495A - Self-running type elevated spot working vehicle - Google Patents

Abstract

PURPOSE: To effectively utilize the whole area of a floor and to prevent the occurrence of a risk when a working table is brought into a containing attitude by a method wherein a working able mounting arm is extended along the flank side of the lower end part of an expansion post boom, and the working table is horizontally oscillatory between the folding position along one side and the expansion position of an expansion boom. CONSTITUTION: In horizontal oscillatory mounting of a working table 7 on the lower end part of an expansion post boom 5, the base end thereof is fixed to the lower end part of the expansion post boom 5 and a working table mounting arm 6 extending therefrom toward one flank side of the expansion post boom 5 is mounted. The working table 7 is horizontally oscillatorily mounted on the upper side of the tip part of the working table mounting arm 6 so that the working table 7 is horizontally oscillatory, as seen from a plane, between the folding position along one side and the expansion position of the expansion boom 4. Since the working table is formed in such a manner that, in a working table containing attitude, the working table 7 is brought into a folding position, the expansion post boom is the present on the floor of the working table 7, and the whole area of the floor of the working table 7 is effectively utilized and a work in an elevated spot is practicable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled aerial work vehicle used for maintenance and inspection of road facilities or bridges.

[0002]

2. Description of the Related Art A self-propelled aerial work vehicle of this type, as shown in FIGS. 5 to 7, has a base frame 2 mounted on a chassis frame 1a of a vehicle 1 and is pivoted to a position in front of the base frame 2. A swivel post 3 which is erected freely, and a telescopic boom 4 whose base end is attached to the upper end of the swivel post 3 so that it can be undulated and driven.
A telescopic post boom 5 in which the lower inner cylinders 5b to 5e are sequentially telescopically inserted into the upper outer cylinders 5a to 5d, and the vertical posture is always maintained regardless of the ups and downs of the telescopic boom 4. The uppermost outer cylinder 5a is a telescopic post boom 5 attached to the end of the telescopic boom 4, and a workbench 7 having a floor surface having a rectangular shape in plan view in the longitudinal direction of the floor surface. A workbench 7 which is horizontally swingably attached to the lower end of the telescopic post boom 5 at a position close to one end.
It consists of and.

The self-propelled aerial work vehicle travels to the work site in the workbench storage posture (the posture shown in FIGS. 5 to 7). In the workbench storage position, the telescopic boom 4 is contracted, the telescopic post boom 5 is contracted, the telescopic boom 4 is laid down toward the rear of the vehicle 1, and the other longitudinal end of the workbench 7 is the base end of the telescopic boom 4. By horizontally swinging the workbench 7 so as to be located on the side, the workbench 7 is positioned on the base frame 2.

In this type of work vehicle, the workbench can be vertically lowered and raised by driving the telescopic post boom 5 mounted so as to always maintain the vertical posture regardless of the ups and downs of the telescopic boom 4. Therefore, it is suitable for work at high places over obstacles such as hedges or work below ground level.

At the work site, an operator mounts on the workbench 7, and then the swivel post 3 is swivelly driven, the telescopic boom 4 is hoisted and telescopically driven, and the telescopic post boom 5 is appropriately operated.
By telescopic drive and work table 7 by horizontal swing drive,
The work table 7 is brought close to the work target, and the vehicle 1 is run as necessary to perform work at a high place.

In the conventional self-propelled aerial work vehicle, when the workbench 7 is horizontally swingably attached to the lower end of the telescopic post boom 5, one end of the workbench 7 in the longitudinal direction of the workbench 7 is offset. The lower end of the telescopic post boom 5 (the lower end of the lowermost inner cylinder 5e) is horizontally swingably mounted above the position. Therefore, there is a problem that the expansion / contraction post is always located on the floor surface of the workbench 7, and the entire floor surface of the workbench 7 cannot be effectively utilized.

Further, since the workbench 7 is located below the telescopic boom 4 in the workbench retracted posture, when the workbench is moved from the work posture to the workbench retracted posture, the worker on the workbench 7 is telescopic. There was a danger of colliding with the boom 4.

[0008]

SUMMARY OF THE INVENTION The present invention is a self-propelled aerial work vehicle that solves the above-mentioned problems of the prior art, that is, the entire floor of the workbench 7 can be effectively utilized, and the work posture It is an object of the present invention to provide a self-propelled aerial work vehicle in which there is no danger of a worker on the workbench 7 colliding with the telescopic boom 4 when the workbench is in the storage posture.

[0009]

In order to achieve the above object, a self-propelled aerial work vehicle according to the present invention is constructed as follows. That is, a base frame 2 mounted on the chassis frame 1a of the vehicle 1, a swing post 3 standing upright in front of the base frame 2 so as to be swing-driving, and a base end portion of the swing post 3 described above.
The telescopic boom 4 is attached to the upper end portion of the telescopic boom 4 so that it can be driven up and down, and the telescopic post boom 5 is formed by inserting the lower inner cylinders 5b to 5e in the upper outer cylinders 5a to 5d so as to be telescopic. A telescopic post boom 5 having the outermost cylinder 5a attached to the tip of the telescopic boom 4 so as to always maintain a vertical posture regardless of the ups and downs of the boom 4, and a floor surface having a rectangular shape in plan view. And a work table 7 that is horizontally swingably attached to the lower end of the telescopic post boom 5 at a position close to one longitudinal end of the floor surface. Boom 4 reduced,
The telescopic post boom 5 is reduced, the telescopic boom 4 is laid down toward the rear of the vehicle 1, and the workbench 7 is horizontally swung so that the other longitudinal end of the workbench 7 is located on the base end side of the telescopic boom 4. By doing so, in the self-propelled aerial work vehicle in which the workbench 7 is positioned on the base frame 2, when the workbench 7 is horizontally swingably attached to the lower end of the telescopic post boom 5. , The base end of which is fixed to the lower end of the telescopic post boom 5, and the workbench mounting arm 6 extending from there to one side of the telescopic post boom 5 is attached. The workbench 7 is attached to the upper end of the workbench attachment arm 6 so as to be horizontally swingable so that it can be horizontally swung between a folding position along one side of the work piece 4 and an extended position extended from the folding position. And, with the workbench stored Is the workbench 7 was configured to the folded position.

[0010]

In the self-propelled aerial work vehicle of the present invention constructed as described above, when the workbench 7 is horizontally swingably attached to the lower end portion of the telescopic post boom 5, the base is attached to the lower end portion of the telescopic post boom 5. The workbench mounting arm 6 having the end portion fixed and extending toward one side of the telescopic post boom 5 is attached, and the workbench 7 has a folding position along one side of the telescopic boom 4 in plan view. Since it is possible to swing horizontally between the folded position and the extended position, the telescopic post boom 5 does not exist on the floor surface of the workbench 7, and the entire floor surface of the workbench 7 is effective. It can be used for high altitude work.

Further, in the workbench storage posture, since the workbench 7 is set to the folding position along the one side of the telescopic boom 4, the self-propelled aerial work vehicle is operated in the work posture. Since the workbench 7 is not located below the telescopic boom 4 and does not pass below the telescopic boom 4 when the workbench is retracted from the workbench to the workbench retracted posture, the worker on the workbench 7 can move the workbench 7 below the telescopic boom 4.
The danger of colliding with is eliminated.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the self-propelled aerial work vehicle of the present invention will be described below with reference to FIGS. The self-propelled aerial work vehicle of the present invention, as shown in FIGS. 1 to 4, is provided with a base frame 2 mounted on a chassis frame 1a of a vehicle 1 and a rotatably erected standing position in front of the base frame 2. Swivel post 3, a telescopic boom 4 whose base end is attached to the upper end of the swivel post 3 so as to move up and down, and outer cylinders 5a to 5d on the upper stage side, and inner cylinders 5b to 5e on the lower stage side can be expanded and contracted sequentially. The telescopic post boom 5 is a telescopic post that is inserted and attached to the tip end of the telescopic boom 4 so that the outer cylinder 5a on the uppermost stage side is always maintained in a vertical posture regardless of the ups and downs of the telescopic boom 4. A boom 5 and a workbench 7 having a rectangular floor surface in plan view, the workbench being horizontally swingably attached to a lower end portion of the telescopic post boom 5 at a position close to one longitudinal end of the floor surface. It is composed of 7 and. Then, in the workbench storage posture, the telescopic boom 4 is contracted, the telescopic post boom 5 is contracted, and the telescopic boom 4 is laid down toward the rear of the vehicle 1,
In addition, the workbench 7 is positioned on the base frame 2 by horizontally swinging the workbench 7 so that the other longitudinal end of the workbench 7 is located on the base end side of the telescopic boom 4. .

When the workbench 7 is horizontally swingably attached to the lower end of the telescopic post boom 5, the base end of the telescopic post boom 5 is fixed to the lower end of the telescopic post boom 5 to one side of the telescopic post boom 5. A workbench mounting arm 6 extending toward the front is mounted, and a workbench 7 is horizontally swingably mounted on the upper end of the workbench mounting arm 6 via a swivel bearing 10. The horizontal swing of the workbench 7 is performed by a workbench swing drive device 8 arranged on the workbench mounting arm 6 side. The workbench 7 has a folding position (a position shown by a solid line in FIG. 3) along which the workbench 7 extends along one side of the telescopic boom 4 in a plan view and an extension position (a virtual line shown in FIG. 3) extended from the folding position. 3), and the workbench 7 is in the folded position (see FIG. 3) when the workbench is stored.
The position indicated by the solid line in FIG.

Numerals 11, 11, ... Indicated at the front, rear, left and right positions of the base frame 2 are outrigger jacks having wheels at their lower ends. These outrigger jacks are intended to stabilize the vehicle 1 in a self-propellable state by contacting the ground when performing work at height in a self-propelled aerial work vehicle.

In the self-propelled aerial work vehicle of the present invention thus constructed, the telescopic post boom 5 is attached to the lower end portion of the telescopic post boom 5 so as to be horizontally swingable.
The base end portion is fixed to the lower end portion (the lower end portion of the innermost cylinder 5e on the lowermost side), and the workbench mounting arm 6 extending toward one side of the telescopic post boom 5 from the base end portion is mounted, and in plan view. Since the workbench 7 is horizontally swingable between the folding position along the one side of the telescopic boom 4 and the extended position extended from the folding position, the workbench 7 is telescopically movable on the floor surface. Since the post boom 5 does not exist, it is possible to effectively use the entire floor surface of the workbench 7 to perform work in high places.

Further, in the workbench storage posture, the workbench 7 is set to the folding position along which the workbench 7 extends along one side of the telescopic boom 4, so that the self-propelled aerial work vehicle can be operated in the work posture. Since the workbench 7 is not located below the telescopic boom 4 and does not pass below the telescopic boom 4 when the workbench is retracted from the workbench to the workbench retracted posture, the worker on the workbench 7 can move the workbench 7 below the telescopic boom 4.
There is no danger of colliding with.

In this embodiment, the workbench mounting arm 6 has a base end portion 6a fixed to the lower end portion of the inner cylinder 5e on the lowermost side of the telescopic post boom 5, and the telescopic post boom from the base end portion 6a. A rising part 6 that rises up through the outside of 5
b, and an extension portion 6c extending from the upper end portion of the rising portion 6b toward one side of the telescopic post boom 5. The workbench 7 is horizontally swingably mounted on the upper end of the extension 6c of the workbench mounting arm 6. The workbench 7 can be horizontally swung around a position close to one longitudinal end of the floor. On the other hand, the base frame 2 of the vehicle 1 is provided with a cutout portion 9 on the other side of the rear end portion. When the workbench is stored, the notch 9 allows the lower end of the telescopic post boom 5, the base end 6a of the workbench mounting arm 6, and the lower part of the rising portion 6c of the workbench mounting arm 6 to be fitted. It is for.

Workbench mounting arm 6 and base frame 2
With such a configuration, it is possible to lower the upper end position of the telescopic post boom 5 in the workbench retracted state (the traveling movement state of the self-propelled aerial work vehicle) and suppress the front height of the self-propelled aerial work vehicle. Has the effect.

[0019]

In the self-propelled aerial work vehicle according to the present invention, when the workbench 7 is horizontally swingably attached to the lower end portion of the telescopic post boom 5, the base end portion thereof is attached to the lower end portion of the telescopic post boom 5. The workbench mounting arm 6 fixed to the telescopic post boom 5 is attached to the workbench mounting arm 6, and the workbench 7 is folded along the one side of the telescopic boom 4 in plan view and the folding position. The workbench mounting arm 6 so that it can swing horizontally between the extension position extended from the
The workbench 7 is horizontally swingably attached to the upper end of the workbench, and the workbench 7 is set to the folding position in the workbench storage posture. Since the boom 5 does not exist, the entire floor surface of the workbench 7 can be effectively used to perform high-altitude work.

Further, in the workbench storage posture, the workbench 7 is set to the folding position along the one side of the telescopic boom 4, so that the self-propelled aerial work vehicle is operated in the work posture. Since the workbench 7 is not located below the telescopic boom 4 and does not pass below the telescopic boom 4 when the workbench is retracted from the workbench to the workbench retracted posture, the worker on the workbench 7 can move the workbench 7 below the telescopic boom 4.
It has the effect that there is no danger of colliding with.

[Brief description of drawings]

FIG. 1 is a side view of a self-propelled aerial work vehicle according to the present invention.

FIG. 2 is a rear view of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a working state diagram of the self-propelled aerial work vehicle according to the present invention.

FIG. 5 is a side view of a conventional self-propelled aerial work vehicle.

FIG. 6 is a rear view of FIG.

FIG. 7 is a plan view of FIG.

[Explanation of symbols]

1; vehicle, 1a; chassis frame, 2; base frame,
3; swivel post, 4; telescopic boom, 5; telescopic post boom, 5a to 5d; upper stage outer cylinder, 5b to 5e; lower stage inner cylinder, 6; workbench mounting arm, 6a; base end, 6b ; Rising part, 6c; workbench mounting part, 7; workbench, 8; workbench swing drive device, 9; cutout part, 10; revolving bearing,

Claims (1)

[Claims] 1. A base frame 2 mounted on a chassis frame 1a of a vehicle 1, a swivel post 3 erected at a front position of the base frame 2 so as to swivel freely, and a base end portion of the swivel post 3 at an upper end portion thereof. Telescopic boom 4, which can be freely driven up and down,
A telescopic post boom 5 in which the lower inner cylinders 5b to 5e are sequentially telescopically inserted into the upper outer cylinders 5a to 5d, and the vertical posture is always maintained regardless of the ups and downs of the telescopic boom 4. The uppermost outer cylinder 5a is a telescopic post boom 5 attached to the end of the telescopic boom 4, and a workbench 7 having a floor surface having a rectangular shape in plan view in the longitudinal direction of the floor surface. A workbench 7 which is horizontally swingably attached to the lower end of the telescopic post boom 5 at a position close to one end.
In the storage position of the workbench, the telescopic boom 4 is contracted, the telescopic post boom 5 is contracted, the telescopic boom 4 is laid down toward the rear of the vehicle 1, and the other end of the workbench 7 in the longitudinal direction is expanded and contracted. A self-propelled aerial work vehicle in which the workbench 7 is positioned on the base frame 2 by horizontally swinging the workbench 7 so as to be located on the base end side of the boom 4. When the work table 7 is horizontally swingably attached to the lower end of the boom 5, the base end of the telescopic post boom 5 is fixed to the lower end of the telescopic post boom 5, and the work is extended toward one side of the telescopic post boom 5. The workbench mounting arm 6 is mounted so that the workbench 7 can be horizontally swung between a folded position along one side of the telescopic boom 4 and an extended position extended from the folded position while the workbench 7 is attached in a plan view. Created at the upper end of 6 A self-propelled aerial work vehicle, characterized in that the workbench 7 is attached so as to be horizontally swingable, and the workbench 7 is set to the folding position in the workbench storage posture.