JP2010058892A - High lift work vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high lift work vehicle, shortened in the vehicle total length by the loading space of a traveling motor. <P>SOLUTION: This high lift work vehicle has a stand, rotatably installed traveling wheels provided on the four sides of the stand, a lifting mast 2 arranged on one side in the traveling direction of the stand, and a driving wheel 1 for connecting one of the traveling wheels in front in the traveling direction and the traveling motor 3 in a lower position of the lifting mast. The lifting mast is constituted so that a central part in the lateral direction is biasedly arranged to one side in the lateral direction to a central part in the lateral direction of the mast type high lift work vehicle, and a lifting control mechanism in the vertical direction of the lifting mast is attached to a lifting mast mechanism under the stand, and the traveling motor is arranged in a space adjacent to a biasedly arranged lifting mast lower part, and is directly coupled with the driving wheel in front in the traveling direction. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a mast type aerial work vehicle used for aerial work, and more particularly to an aerial work vehicle having a compact vehicle.

  In general, an aerial work vehicle is used for indoor construction work, electrical work, for example, wiring, attachment / detachment, painting, etc., in order to improve the convenience and safety of work at narrow construction sites, Work vehicles having self-propelled means and lifting devices such as mast type / boom type / scissors type are used.

FIG. 4 is a top view showing a conventional aerial work vehicle.
As shown to Fig.4 (a), the raising / lowering mast 2 is arrange | positioned in the center of the left-right direction of an aerial work vehicle, and the raising / lowering mechanism is under the raising / lowering mast. The driving wheel 1 is connected to the traveling gear A4 and the traveling gear B5, and is connected to the traveling motor 3. It is an aerial work vehicle equipped with a so-called gear drive system.
Here, when the arrangement relationship between the elevating mast 2 and the traveling motor 3 is viewed from the front of the aerial work vehicle, they are arranged in parallel.

Next, FIG.4 (b) arrange | positions the raising / lowering mast 2 in the horizontal direction approximate center of an aerial work vehicle, and the raising / lowering mechanism is under the raising / lowering mast. The driving wheel 1 is connected to the sprocket 11 and the driving chain 10 and is connected to the traveling motor 3. It is an aerial work vehicle equipped with a so-called chain drive system.
Similarly to FIG. 4A, when the arrangement relationship between the lifting mast 2 and the traveling motor 3 is viewed from the front of the aerial work vehicle, they are also arranged in parallel.

The aerial work vehicle shown in FIG. 5 includes a scissor-type lifting device, the scissor link device 51 is configured so that the lateral width of the scissor link device 51 is smaller than the lateral work vehicle direction width. The work vehicle described in Patent Document 1 that secures a loading space for a battery or the like on a chassis by disposing it to the left and right sides with respect to the center in the left and right direction of the vehicle.
JP 2004-123355 A

However, the conventional aerial work vehicle shown in FIG. 4 does not adopt a compact configuration suitable for work on a narrow construction site, and the traveling vehicle connected to the traveling motor 3 also in view of the number of parts. Maintenance work of the gear A4 and the traveling gear B5 is necessary, and the driving chain 10 has a safety problem that a stone or the like is disengaged during driving.
In the aerial work vehicle shown in FIG. 5, the purpose is to secure a battery loading space, and there is no description regarding the vehicle compactness and the positional relationship between the lifting mast and the traveling motor.

  The present invention has been made in view of the conventional problems as described above, and is arranged such that the center part in the left-right direction of the lifting mast is biased to one side in the left-right direction with respect to the center part in the left-right direction of the aerial work vehicle. By providing a traveling motor that is directly connected to the driving wheel in the traveling direction in an empty space adjacent to the lower part of the lifting mast, the aerial work vehicle that shortens the overall length of the vehicle by the traveling motor loading space is provided. There is to do.

  Furthermore, since a traveling gear, a sprocket, and a driving chain connected to the traveling motor are not required, maintenance work and maintenance costs are reduced, and an aerial work vehicle with a reduced number of parts is provided.

  The present invention includes a gantry, a rotatably mounted traveling wheel provided on four sides of the gantry, an elevating mast provided on one side in the traveling direction of the gantry, and a position below the elevating mast at the front of the traveling direction. In an aerial work vehicle including a drive wheel having a travel motor connected to one of the traveling wheels, the lifting mast has a laterally central portion biased to one side in the lateral direction with respect to the lateral center of the mast type aerial work vehicle. The vertical lifting control mechanism for the vertical lifting mast is attached to the vertical lifting mast mechanism under the gantry, and the traveling motor is disposed in a space adjacent to the lower portion of the lifting mast that is biased to the front in the traveling direction. The configuration is such that it is directly connected to the drive wheels.

  The aerial work vehicle according to the present invention has an empty space adjacent to the lower part of the lifting mast by disposing the center part in the left-right direction of the lifting mast so as to be biased to one side in the left-right direction relative to the center part in the left-right direction of the working vehicle It is possible to arrange a travel motor that is directly connected to the driving wheel in the front of the travel direction, shortening the overall length of the vehicle by the travel motor loading space, and reducing the height of the work vehicle, making it easier to handle. Work vehicle.

  Since the drive chain connected to the travel motor is not required, there is no cause of failure or accidents caused by biting stones, and safety can be ensured.

  Maintenance work and maintenance costs for each component (travel gear connected to the travel motor, sprocket, and drive chain) are reduced, and more specifically, the work vehicle is reduced in cost with fewer parts.

  Hereinafter, embodiments of an aerial work vehicle according to the present invention will be described with reference to the drawings.

  FIG. 1 is a top view of a compact aerial work vehicle according to the present invention. FIG. 2 is a front view of the compact aerial work vehicle of the present invention. FIG. 3 is a perspective view of a compact aerial work vehicle according to the present invention. FIG. 4 is a top view showing a conventional aerial work vehicle. FIG. 5 is a view showing an aerial work vehicle adopting a conventional biased configuration.

As shown in FIG. 1, the tire that becomes the driving wheel 1 directly connected to the traveling motor 3 is provided on any one of the four sides of the gantry, and is driven by the traveling motor 3, depending on various traveling patterns such as forward, backward, and turn. Travel with variable speed.
This embodiment is a front wheel single wheel drive.
In addition, a steering mechanism 9 and a charger 12 are provided at the rear portion of the aerial work vehicle.

The elevating mast 2 is provided on one side in the traveling direction of the gantry, and the center part in the left-right direction is arranged so as to be biased to one side in the left-right direction with respect to the center part in the left-right direction of the aerial work vehicle.
Here, in order to deviately arrange the elevating mast 2, it is premised that a sufficient space for the traveling motor 3 is secured. Further, the elevating mast 2 and the traveling motor 3 are viewed from the front of the aerial work vehicle. It must be placed adjacent in the left-right direction.
In the present embodiment, the elevating mast 2 is offset from the center of the 185 mm vehicle to one side in the left-right direction, so that a sufficient space for the travel motor 3 can be secured, and the elevating mast 2 and the travel motor 3 are moved to the left and right. They are arranged in parallel.
Further, by arranging the battery 8 in the reverse direction, the center of gravity of the aerial work vehicle is corrected to ensure safety.

A vertically moving control mechanism for the lifting mast 2 is attached to the lifting mast mechanism under the gantry.
In this embodiment, the hydraulic package 7 and the elevating mast 2 are connected by a tube to serve as a power source for elevating control.
Here, as compared with the conventional structure, the lifted and lowered mast 2 and the hydraulic package 7 are located away from each other, but only the tube to be connected becomes longer, and the pressure is not weakened.
The lifting control of the lifting mast 2 can be controlled in the lifting mast and in the lower operation box 6.

The traveling motor 3 is disposed in a space adjacent to the lower part of the lifting mast that is biased to the left and right direction with respect to the center in the left and right direction of the aerial work vehicle, and is directly connected to the tire of the drive wheel 1 in the traveling direction. Since a reduction gear (not shown) with a built-in gear is attached to the inside thereof, the conventional gear or chain is not exposed and a safer and more compact aerial work vehicle is obtained.
In the present embodiment, the lift mast 2 that is biased is a vehicle whose overall length is 200 mm shorter than a conventional aerial work vehicle.
Here, the rotational power of the head motor is further increased in power via the speed reducer and transmitted to the tire.

It is a top view of a compact aerial work vehicle of the present invention. 1 is a front view of a compact aerial work vehicle of the present invention. 1 is a perspective view of a compact aerial work vehicle of the present invention. It is a top view which shows the conventional aerial work vehicle. It is a figure which shows the aerial work vehicle which takes the conventional biased structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drive wheel 2 Elevating mast 3 Traveling motor 4 Traveling gear A
5 Traveling gear B
6 Lower operation box 7 Hydraulic package 8 Battery 9 Steering mechanism 10 Drive chain 11 Sprocket 12 Charger

Claims (1)

A frame,
A freely mounted traveling wheel provided on all four sides of the frame;
Elevating mast provided on one side of the gantry in the traveling direction;
In an aerial work vehicle including a drive wheel having a traveling motor connected to one of the traveling wheels in the traveling direction at a position below the lifting mast,
The elevating mast is disposed such that the center in the left-right direction is biased to one side in the left-right direction with respect to the center in the left-right direction of the mast type aerial work vehicle,
The lifting control mechanism in the vertical direction of the lifting mast is attached to the lifting mast mechanism under the gantry,
The aerial work vehicle is characterized in that the traveling motor is disposed in a space adjacent to the lower part of the lifting mast that is biased and is directly connected to the driving wheel in front of the traveling direction.

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