JPH0218073Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a pair of left and right propulsion wheels, a drive means capable of rotating each of these propulsion wheels in opposite directions, and a vehicle body that is connected to the propulsion wheels. The vehicle body is provided with casters arranged at separate locations in the longitudinal direction, and a boom is provided on the vehicle body so as to be able to be driven up and down by swinging around a horizontal axis, and a worker boarding section is provided at the tip of the boom. Regarding vehicles for working at heights equipped with.

[Conventional technology]

Conventionally, when the boom is in its maximum raised state, the position of the operator's riding part is from the center of the turn, that is, from the center between the left and right propulsion wheels when turning on the spot by driving the left and right propulsion wheels in opposite directions. They were starting to look far apart in plan view.

[Problem that the invention attempts to solve]

When turning the vehicle body with the passenger compartment in a high position,
Although it gives a sense of fear to the operator, if the position of the boarding part is far from the center of rotation when the boom reaches its maximum height, as in the past, the boarding part will move as the vehicle body turns. Since it is swung in a large radius, it has the disadvantage of giving workers a sense of fear.

The present invention has been developed in view of the above-mentioned circumstances, and its purpose is to enable the operator to turn the vehicle body with the boom in its maximum raised state with less fear on board.

[Means for solving problems]

The characteristic configuration of the present invention is such that when the boom is in the maximum raised state, the worker riding section in plan view is located at the center between the two propulsion wheels, and
The worker riding section is configured to be located above the propulsion wheel in a side view,
Its action and effects are as follows.

[Effect]

In other words, when the boom swings around the horizontal axis and is in the maximum raised state, when the left and right propulsion wheels are driven in opposite directions to make a turn on the spot,
Since the worker riding section is located in the center between the two propulsion wheels, which is the turning center in plan view, and is located above the propulsion wheels in side view, the worker riding section can rotate on the spot. It will be located near the center of the turn, where it will not be swung around too much.

[Effect of idea]

Therefore, the vehicle body can be rotated when the boom is in its maximum raised state while suppressing the swinging of the riding section, which reduces the fear that is given to the worker. We have now achieved a vehicle for working at heights that is even more convenient to use.

〔Example〕

As shown in FIGS. 1 to 3, a hydraulic motor 1 serves as a drive means that can be freely switched between forward and reverse directions.
A pair of left and right propulsion wheels 2 that can be freely driven by a and 1b
a and 2b are provided on the front side of the vehicle body 4, and these wheels 2
The caster 3 is placed at a location away from a and 2b in the longitudinal direction of the vehicle body, that is, on the rear side of the vehicle body 4, and the boom 5 is moved by a hydraulic cylinder 6.
The boom 5 is provided with a worker riding section A at the tip of the boom 5, which can be moved up and down by swinging around the horizontal axis core tube at the base end.
is installed to configure the aerial work vehicle.

To drive the hydraulic motors 1a, 1b and the hydraulic cylinder 6, the hydraulic unit 7 is connected to a belt 8.
The unit 7 is connected to the engine 9 via a pump, and the propulsion wheels 2a, 2b and the boom 5 are driven by pressure oil from a pump provided in the unit 7.

The worker boarding section A includes a bottom plate 10 for the worker to board, and a rod-shaped pipe 11.
is erected upward from the bottom plate 10 so as to surround the worker, a backrest part 12 for the worker is provided behind the boarding part A, and a bag 13 for fruit harvesting is hung in front of the boarding part A. A control lever 14a for raising and lowering the boarding section A and a pair of left and right running (turning) control levers 14b,
14c are provided respectively. In addition, when the boom 5 is in the maximum raised state, the boarding section A in plan view is located at the center between the two propulsion wheels 2a and 2b, and as shown in FIG. The configuration is such that section A is located above the propulsion wheels 2a and 2b.

In addition, each of the operating levers 14a, 14b, 14c
Lever 15a, 15b, 15c corresponding to each of
The levers 14a..., 15a...
are connected by wire. In order to configure the boom 5, a pair of upper and lower arms 5a and 5b are provided so as to constitute a parallel quadruple link.
The riding section is maintained in a predetermined posture regardless of whether the vehicle is raised or lowered.

[Another example]

In the above embodiment, a tricycle equipped with a pair of wheels 2a, 2b and one caster 3 was exemplified as a vehicle for high-altitude work, but the vehicle may be configured as a four-wheeled vehicle by adding one caster. Further, in constructing the four-wheeled vehicle, two casters 3 may be provided at the front and rear ends of the vehicle body 4, and wheels 2a and 2b may be provided at the center of the vehicle body 4 in the front and rear direction. The specific configuration of the car can be changed in various ways. Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the vehicle for working at heights according to the present invention; FIG. 1 is a side view of the vehicle, FIG. 2 is a plan view of the vehicle, and FIG. 3 is a front view of the vehicle. be. 1a, 1b...drive means, 2a, 2b...propulsion wheel, 3...caster, 5...boom, A...
Worker boarding section.

Claims (1)

[Scope of utility model registration request] A pair of left and right propulsion wheels 2a, 2b, drive means 1a, 1b capable of rotating each of these propulsion wheels 2a, 2b in opposite directions, and a drive means 1a, 1b separated from the propulsion wheels 2a, 2b in the longitudinal direction of the vehicle body. The vehicle body is provided with casters 3 disposed at certain locations, and a boom 5 is provided on the vehicle body so as to be freely driven up and down by swinging around a horizontal axis, and a worker riding section A is provided at the tip of the boom 5. In the mounted aerial work vehicle, when the boom 5 is in the maximum raised state,
The worker riding section A in plan view is located in the center between the two propulsion wheels 2a and 2b, and
A vehicle for high-altitude work, characterized in that the worker riding section A is located above the propulsion wheels 2a and 2b when viewed from the side.