JP2002255489A - Boom type high lift work device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a boom type high lift work device to solve a problem that an upper operating device 21 of an aerial platform 16 of a conventional boom type high lift work device is mounted inside a handrail 17 standingly mounted along an outer circumference of a floor surface 16e of the platform 16 and accordingly an internal dimension between an inside side face 21c of the operating device 21 and the handrail 17 is small, and thus a move of an operator 24 on the platform 16 and loading/moving of materials will be hard to be done to worsen operativity. SOLUTION: In a plane view, the operating device 21 is mounted on one edge 6a of a pair of edges of the platform 6 close to each other as well as a part 21a of the device protrudes from the surface 6e of the platform and the rest 21b overlaps with the surface 6e.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper operating device mounted on a platform in an aerial work apparatus.

[0002]

2. Description of the Related Art As shown in FIG. 2, an aerial work vehicle C is an aerial work device D, that is, a base frame 2, and a swivel mounted on the base frame 2 so as to be rotatable. The base 3, a boom 4 whose base end is attached to the upper end of the swivel base 3 so as to be able to move up and down, a posture maintaining member 5 which is attached to the tip of the boom 4 to maintain the posture irrespective of the up-and-down driving, and a swinging movement to the posture maintaining member 5 A device consisting of a platform 16 mounted on the
Is mounted.

The swivel 3, the boom 4, the attitude maintaining member 5, and the platform 16 are freely swingable by a swing actuator 7 (not shown), freely swingable by a swing actuator 8 (not shown), and extendable and contractible actuator 9.
(Not shown) telescopic, posture maintaining actuator
The actuator is driven so that the posture can be freely maintained by 10 (not shown) and the swing can be freely performed by a swing actuator 11 (not shown).

On the platform 16, an upper operating device 21 is provided with a handrail standing upright along the outer periphery of the floor surface 16e.
The upper operating device 21 is provided with an operating lever 22 (not shown), a switch 23 (not shown), and the like.

When the operator 24 on the platform 16 operates these operating levers 22, switches 23, and the like, the actuators 7 to 11 described above operate.
By appropriately operating these operation levers 22, switches 23, and the like,
The platform 16 is moved closer to the work object 25 to perform work at height.

[0006] Some of the aerial platforms equipped with such platforms 16 include those used for inspection and repair of bridges and those used for pruning trees. In plan view, each of the platforms 16 has an elongated shape. I have to.

[0007] With this shape, in the former case, high-altitude work intruding between the bridge girders and in the latter case, high-altitude work intruding between the branches can be efficiently performed. I have.

On the other hand, since the platform 16 is formed in an elongated shape, the interval between the handrails 17 of the platform 16 in which at least a pair of opposing sides is close to each other is small.

[0009]

By the way, when the distance between the handrails 17 of the platform 16 becomes smaller, the inner dimension a becomes smaller, and the inner side surface 21c of the upper operation device 21 and the handrail are reduced.
The internal dimension c with 17 becomes smaller.

The inner side surface 21c of the upper operation device 21 and the handrail
Platform for starting and ending work between 17
This is where the operator 24 passes when the operator 24 gets on and off the platform 16 and moves through the platform 16 during work, and also for loading materials used for work and moving materials. It is also a place to let.

[0011] Therefore, when the inner dimension c of this place becomes small, there is a problem that it becomes difficult for the above-mentioned operator 24 to pass, or to load and move the material, and the workability deteriorates.

The present invention is directed to a boom type high working device which solves the above-mentioned problems of the prior art, that is, an upper operating device 21.
A first object of the present invention is to provide a boom-type aerial work apparatus in which the inner dimension c between the inner side surface 21c of the vehicle and the handrail 17 is as large as possible.
A second problem is to provide an aerial work vehicle that solves the first problem. A third problem is to provide a more compact aerial work vehicle that solves the second problem. It is assumed that.

[0013]

Means for Solving the Problems In order to solve the above problems, a boom type aerial work apparatus according to the present invention is configured as follows.

According to the first aspect of the present invention, the base frame, the swivel base mounted on the base frame, the boom that can be raised and lowered mounted on the swivel base, the posture maintaining member mounted on the end of the boom, and the posture maintaining member directly. A boom-type aerial work apparatus comprising a platform having a substantially rectangular shape in plan view in which at least a pair of sides of opposed sides attached to each other, either directly or indirectly, and an upper operation device attached to the platform. In a plan view, the upper operation device is attached to one of a pair of sides on which the opposing sides of the platform are close to each other, a part of which protrudes from the floor of the platform, and the remaining part of the platform is a part of the platform. It was configured to overlap with the floor.

With this configuration, it is possible to provide a boom type aerial work apparatus having a platform in which the inner dimension between the inner side surface of the upper operation device and the handrail is as large as possible. Therefore, the operator passes between the inner side surface of the upper operation device and the handrail, or mounts materials,
It is easier to pass the material to move.

According to a second aspect, in the first aspect,
The base frame is attached to the vehicle, and in a retracted position of the boom type aerial work apparatus, the upper operation device is located on one side of the platform, which is located on a side surface of the vehicle, and protrudes from the platform in plan view. Some of the outermost parts are located inside the side of the vehicle.

With this configuration, the boom type aerial work device according to the first aspect can be used as a boom type aerial work device for an aerial work vehicle mounted on a vehicle.

According to a third aspect, in the second aspect,
In the retracted position of the boom-type aerial work device, in a plan view, it has a substantially triangular space portion sandwiched between a side surface of the vehicle and one side of the platform located on the side surface of the vehicle. The configuration was such that the protruding part of the device was located.

With this configuration, the aerial work vehicle equipped with the boom type aerial work device can be configured as a small, narrow vehicle.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the present invention will be described with reference to FIG. 1-5, 7-11, 21
25 and a have the same meanings as those described and used in the prior art, and therefore, the description of the reference numerals is omitted here.

6 is a platform, 6a, 6b, 6
c and 6d are each side of the platform 6, 6e is a floor surface of the platform 6, and 12 is a handrail.

As shown in FIG. 1, an aerial work vehicle A is an aerial work device B, that is, a base frame 2 and a swivel base 3 which is attached to the base frame 2 so as to be rotatable. A boom 4 whose base end is attached to the upper end of the swivel base 3 so as to be able to move up and down; a boom 4 which is attached to the tip of the boom 4; Device composed of a platform 6
Is mounted. The boom 4 may be configured to be extendable and contractible, and in the following description, the boom 4 will be described as being extendable and contractible.

The swivel 3, the boom 4, the attitude maintaining member 5, and the platform 6 can be swiveled by a swivel actuator 7 (not shown), can be swung up and down by an up / down actuator 8 (not shown), and can be extended and retracted.
(Not shown) telescopic, posture maintaining actuator
It is driven so that the posture can be freely maintained by 10 (not shown) and the swing can be freely performed by a swing actuator 11 (not shown).

On the platform 6, a handrail 12 is provided upright along the outer periphery of the floor surface 6e, and an operating lever 22 (not shown) and a switch 23 (not shown) are provided. An upper operating device 21 is mounted.

Reference numeral 21a denotes a part of the upper operation device 21 in plan view, and reference numeral 21b denotes a remaining portion of the upper operation device 21 in plan view.

The upper operating device 21 is provided for the platform 6
Are mounted at the following positions. The upper operation device 21 is attached to one side 6a of a pair of sides 6a and 6b where opposing sides of the platform 6 are close to each other, and a part 21a of the upper operation device 21 is a floor surface of the platform 6 in plan view. The remaining portion 21b is positioned so as to protrude from 6e and overlap the floor 6e of the platform 6.

With this configuration, the platform 6 of the boom-type aerial work apparatus B can have an inner dimension between the inner side surface 21c of the upper operation device 21 and the handrail 12b on one side 6b of the platform 6. It has become as large as possible.

In operation, these operation levers 22,
The operator who put the switch 23 etc. on the platform 6
The operation of each of the actuators 7
~ 11 operate, these operation lever 22, switch
23, etc., as required, to move the platform 6 to the work object 25.
To work at heights.

At the time of working at a high place, the inner dimension a between the inner side surface 21c of the upper operation device 21 and the handrail 12b on the side 6b of the platform 6 is made as large as possible. The inner side surface 21c and the handrail 12b of the upper operation device 21
, The operator 24 can easily pass, load the material, and easily move the material. Therefore, work can be performed safely and efficiently.

Next, 1a is a side surface of the vehicle 1.

In the above description, the boom type aerial work apparatus B
Has been described as a main component of the aerial work vehicle A, but the boom type aerial work device B may be a stationary type fixed to a foundation.

Upper operating device 21 of the boom type aerial work apparatus B
Is located on one side 6a of the platform 6 which is located on the side 1a of the vehicle 1 in plan view in the retracted posture, and the outermost part of the protruding portion 21a is inside the side 1a of the vehicle. It is located in.

With this configuration, the upper operating device 21
The protruding portion 21a does not protrude from the side surface 1a of the vehicle 1, so that the boom-type aerial work apparatus B is
Can be used as a boom-type aerial work device for an aerial work vehicle A mounted on a public road, which does not hinder running at high speed on public roads.

Since the vehicle can travel and move on a public road at a high speed, it can be efficiently moved between sites, thereby improving the efficiency of the entire work.

The upper operation device 21 is positioned at the same position as that described above with respect to the platform 6, that is, one of a pair of sides 6a and 6b where opposing sides of the platform 6 are close to each other. Attached to the side 6a side, a part 21a thereof is a floor surface of the platform 6 in plan view.
6e, the rest 21b is the floor 6e of the platform 6
Is located to overlap with.

Therefore, in the platform 6 of the boom type aerial work apparatus B, the inner dimension a between the inner side surface 21c of the upper operation device 21 and the handrail 12b on one side 6b of the platform 6 is made as large as possible. It has the same function and effect as those described above.

E is a substantially triangular space.

In the storage position of the boom type aerial work apparatus B, the substantially triangular space E is defined by the side surface 1a of the vehicle 1 and one side 6a of the platform 6 located on the side surface 1a side of the vehicle 1 in plan view. The protruding part 21a of the upper operating device 21 is located in the space E which is sandwiched between the substantially triangular spaces.

With this configuration, the boom type aerial work apparatus B can be mounted on a small vehicle 1 having a small width, and the aerial work vehicle A can be configured as a small vehicle 1 having a small width.

The small work vehicle A having a small width can be easily handled when traveling and traveling, and the area occupied by the road can be reduced at the time of work. In addition, when the size is reduced, the energy consumption can be reduced, so that there is also an energy saving effect.

The upper operation device 21 is positioned at the same position as that described first with respect to the platform 6, that is, one of a pair of sides 6a and 6b where opposing sides of the platform 6 are close to each other. Of the platform 6, a part 21 a thereof protrudes from the floor surface 6 e of the platform 6 in plan view, and the remaining portion 21 b is a part of the platform 6.
Is located so as to overlap with the floor surface 6e.

Therefore, in the platform 6 of the boom type aerial work apparatus B, the inner dimension a between the inner side surface 21c of the upper operation device 21 and the handrail 12b on one side 6b of the platform 6 is made as large as possible. It has the same action and effect as the first mentioned.

In the above description, the platform 6 has been described as being attached to the posture maintaining member 5 so as to be swingable. However, the platform 6 may be attached to the posture maintaining member 5 via a post boom, or may be attached to the posture maintaining member 5. It may be mounted via a horizontal boom or via both the post boom and the horizontal boom. Further, relative rotation may be performed between these. The post boom may be driven up and down, and the horizontal boom may be driven horizontally.

[0044]

According to the first aspect, the base frame,
At least one of a swivel mounted on the base frame, an up-and-down boom mounted on the swivel, an attitude maintaining member mounted on the boom tip, and an opposite side directly or indirectly mounted on the attitude maintaining member. In a boom type high-altitude working device comprising a platform having a substantially rectangular shape in a plan view in which a pair of sides approach each other and an upper operating device attached to the platform, the upper operating device is opposed to the platform in a plan view. The upper operating device is attached to one side of a pair of sides where the sides are close to each other, and a part thereof protrudes from the floor of the platform, and the rest overlaps with the floor of the platform. The boom-type aerial work equipment has a platform with as large an inside dimension as possible between the inner side surface of the car and the handrail.

Therefore, the operator can easily pass between the inner side surface of the upper operation device and the handrail, can easily load the material, and can easily pass the material to move. Therefore, work can be performed safely and efficiently.

According to a second aspect, in the first aspect,
The base frame is attached to the vehicle, and in a retracted position of the boom type aerial work apparatus, the upper operation device is located on one side of the platform, which is located on a side surface of the vehicle, and protrudes from the platform in plan view. A part of the outermost part is located inside the side of the vehicle, so that the boom-type aerial work apparatus of the aerial work vehicle having the boom-type aerial work apparatus of claim 1 mounted on the vehicle. Can be used as a device.

Therefore, the vehicle can travel and travel on public roads at high speed, so that it is possible to efficiently move between sites, thereby improving the efficiency of the entire work.

According to claim 3, in claim 2,
In the retracted position of the boom-type aerial work device, in a plan view, it has a substantially triangular space portion sandwiched between the side surface of the vehicle and one side of the platform located on the side surface of the vehicle. Since the protruding part of the device is located, the aerial work vehicle equipped with the boom type aerial work device can be made a small and narrow vehicle.

Therefore, the vehicle can be easily handled when traveling and traveling, and the area occupied by the road can be reduced during work, so that traffic is less obstructed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a boom type aerial work apparatus according to the present invention.

FIG. 2 is a plan view showing a conventional boom type high place working device.

[Explanation of symbols]

 Reference Signs List 1 vehicle, 1a side surface of vehicle 1, 2 base frame, 3 turntable, 4 boom, 5 attitude maintaining member, 6 platform, 6a to 6d each side of platform 6, 6e platform 6 floor, 21 upper operation device, 21a A part of the upper operating device 21, 21b The rest of the upper operating device 21, A aerial work platform, B aerial work equipment, E a substantially triangular space,

Claims (3)

[Claims] 1. A base frame, a swivel table mounted on the base frame, an up-and-down boom mounted on the swivel table, a posture maintaining member mounted on the end of the boom, and directly or indirectly on the posture maintaining member. A boom-type aerial working device comprising: a platform having a substantially rectangular shape in a plan view in which at least a pair of sides of opposing sides attached to each other are close to each other; and an upper operation device attached to the platform. Visually, the upper operating device is attached to one of a pair of sides where the opposing sides of the platform are close to each other, a part of which protrudes from the floor of the platform, and the remaining part is the floor of the platform. A boom-type aerial work device, which overlaps with the above. 2. The base frame is mounted on a vehicle, and in a retracted posture of the boom type aerial work apparatus, in a plan view,
The upper operating device is located on one side of the platform, which is located on the side of the vehicle, and the outermost part of the protruding portion is located on the inner side than the side of the vehicle. 2. The boom type aerial work apparatus according to 1. 3. The storage position of the boom type aerial work apparatus,
In a plan view, it has a substantially triangular space portion sandwiched between a side surface of the vehicle and one side of the platform located on a side surface of the vehicle, and a portion of the upper operation device that protrudes is located in this space portion. The boom type aerial work device according to claim 2, characterized in that: