JPH0136879Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an aerial work vehicle equipped with a tank for snow removal and cleaning, which is used for cleaning, inspection, maintenance, snow removal, etc. in high places such as the fuselage of an aircraft.

[Technical background of the invention and its problems]

A high-altitude snowplow used for removing snow from an aircraft body will be described as an example of a high-altitude work vehicle.

BACKGROUND ART Conventionally, a refractive boom type high-altitude snowplow as shown in FIG. 3 has been used to remove snow from the fuselage of an aircraft. In the case of this vehicle, a hot water tank, an anti-icing liquid tank, a water spray device, and a storage room are mounted on the self-propelled chassis, and a bending boom device is installed above the water spray storage room, and during snow removal work, the worker can work on the workbench at the tip of the boom. A worker climbs on top of the vehicle, swivels the boom device, and performs the work by discharging the liquid in the hot water tank and anti-icing tank from a nozzle on the workbench using a water spray device at the rear of the vehicle. Vehicles used to remove snow from aircraft, such as in this case, must be manufactured to have a short overall length as much as possible, as they work while traveling around the aircraft, so the high-altitude boom device is designed to be able to turn around easily. , the water spray system storage room, the self-propelled vehicle chassis, and the driver's cab. Therefore, the workbench at the tip of the boom is mounted on the roof of the chassis and driver's cab so that the position of the workbench can be confirmed from the driver's seat when in the driving position. The structure is placed slightly forward, and in order for workers to get onto the workbench, they must first climb onto the tank using a ladder on the side of the tank, and then work through a passage provided from above the tank to the roof of the driver's seat. I needed to get on board. However, in adverse conditions such as during winter snow removal, it is dangerous to climb from the ground to a work platform located at a high place, such as on the roof of the driver's seat, and it is also an obstacle to performing work quickly and efficiently. was.

[Purpose of invention]

The purpose of this invention is to provide an aerial work vehicle with a tank for snow removal and cleaning that allows workers to board the workbench directly from the ground, has a short overall length, and has a small turning radius.

[Summary of the idea]

The present invention is a tank-equipped aerial work vehicle equipped with a tank mounted on a self-propelled chassis, a water spray device, and an aerial work device, and a turntable on the tank or water spray device storage chamber, and a turntable on the turntable. It is equipped with a main boom that performs up-and-down operations, a sub-boom that extends and contracts along the main boom, a bending boom at the tip of the sub-boom, and a work platform at the tip of the bending boom.
When the main boom is directed forward, the secondary boom is extended, and the retractable boom is retracted downward, the work platform is positioned near the ground in front of the driver's seat, the main boom is lowered, and the retractable boom is directed forward.
There is an aerial work vehicle with a tank for snow removal and cleaning, which is characterized in that when the slave boom is retracted and the refracting boom is raised, the work platform is placed slightly in front of and above the driver's seat.

[Example of idea]

FIG. 1 is a side view showing an example of an aerial work vehicle equipped with a snow removal and cleaning tank according to the present invention.

FIG. 2 is a side view showing an example of the operation.

In the figure, 1 is a self-propelled chassis, and 2 is a subframe, which is placed on a chassis frame 3. 4 is a fresh water tank, and 5 is an anti-icing liquid tank. Reference numeral 6 denotes a water discharge device storage chamber, in which a water discharge pump, a water discharge pump driving engine, a fresh water heating device, etc. are provided. Reference numeral 7 denotes a turntable provided at the upper part of the water spray device storage chamber 6, which is driven by a hydraulic motor and rotates. A main boom 8 is pivotally connected to a bracket 9 of the turntable 7 so that it can be raised and lowered, and is raised and lowered by a main boom hydraulic cylinder 10. Reference numeral 11 denotes a sub-boom which is fitted to the main boom 8 and is extendable and retractable, and is configured to extend and retract with respect to the main boom 8 by means of a sub-boom hydraulic cylinder. Reference numeral 12 denotes a bending boom which is pivotally attached to the tip of the slave boom so as to be able to rise and fall freely, and has a structure in which the bending operation is performed by a bending boom hydraulic cylinder 13. Turntable 7, main boom 8, slave boom 1
1 and the bending boom 12 are constructed so that they can be remotely controlled by hydraulic control valves. The control panel consists of upper and lower control panels on the workbench and on the ground such as inside the driver's seat.
The lower operation panel is equipped with at least operation switches for the slave boom 11 and the bending boom 12. The refracting boom 12 is bifurcated at its tip, and a workbench 14 is suspended between the forks. The workbench 14 has a structure in which it is always maintained parallel to the ground by an automatic parallelism mechanism.

When this aerial work vehicle is in a running position, the slave boom 11 is retracted, the refracting boom 12 is directed forward and horizontally, and the work platform 14 is placed in the driver's cabin of the self-propelled platform 1 so that the position of the work platform can be confirmed from inside the driver's seat. 15 is placed slightly forward, and is configured to have the minimum length that allows for safe driving while ensuring safety.

Next, when a worker gets on the workbench 14 from the ground, he operates the operation switch in the lower part of the operator's cab 15, etc., first extends the slave boom 11, then bends the bending boom 12 downward, and is placed close to the ground, and the worker can get on the workbench 14 by opening the door in front of the workbench 14. Thereafter, by operating the upper operation switch on the workbench, the workbench 14 is raised or rotated to perform work at high places. Therefore, when starting work, the operator drives the aerial work vehicle to the work site, operates the lower operation panel after stopping, first extends the slave boom, and then lowers the retractable boom 12, and the worker climbs onto the work platform from the ground. Get on. Also, after the work is completed, after descending from the work platform 14 to the ground, the bending boom 12 is
Then, the slave boom 11 is contracted to shorten the overall length and the vehicle travels.

[Effect of idea]

As detailed in the embodiment, the present invention shortens the overall length of the aerial work vehicle so that it can travel safely, and also enables the operator to board the workbench directly from the ground, and has a small turning radius and high efficiency. This has the effect of allowing you to work at heights safely and with good quality.

[Brief explanation of drawings]

Fig. 1 is a side view showing an example of an aerial work vehicle with a tank for snow removal and cleaning according to the present invention, Fig. 2 is a side view showing an example of the vehicle during work, and Fig. 3 is a side view of a conventional high-altitude snow removal vehicle. It is a side view which shows an example. 1...Self-propelled chassis, 2...Subframe, 3...
... Vehicle chassis frame, 4 ... Fresh water tank, 5 ... Anti-icing liquid tank, 6 ... Water spray device storage room, 7 ... Turntable, 8 ... Main boom, 9 ... Bracket,
10... Main boom hydraulic cylinder, 11... Slave boom, 12... Refraction boom, 13... Refraction boom hydraulic cylinder, 14... Work platform, 15... Driver's cab of self-propelled chassis.

Claims (1)

[Scope of utility model registration request] In a tank-equipped aerial work vehicle equipped with a tank mounted on a self-propelled chassis, a water spray device, and an aerial work device, a turntable on the tank or water spray device storage chamber, and a raising and lowering motion on the turntable are provided. The main boom is equipped with a main boom that extends and retracts along with the main boom, a retractable boom at the tip of the sub-boom, and a work platform at the tip of the retractable boom. , when the articulating boom is refracted downward, the platform is located near the ground in front of the driver's seat, the main boom is lowered and facing forward, the secondary boom is retracted, and when the articulating boom is raised, the platform is positioned near the ground in front of the driver's seat. An aerial work vehicle with a snow removal and cleaning tank that is located slightly in front of the driver's seat.