JPH019839Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a power saving device for an aerial work vehicle.

For aerial work vehicles equipped with a work platform at the end of an electrically insulated boom, a battery installed in the work platform is used as a power source to switch the regulation range of the operation regulating device that prevents the aerial work vehicle from falling. For safety reasons, the operation regulating device is always energized and turns off when the operation is restricted, so the battery wears out quickly and not only does it take time to replace or charge the battery, but it also causes problems during operation. If the battery discharged, there was a risk that the operation would be restricted and operation would become impossible.

The present invention was developed in view of the above circumstances, and the purpose is to provide a power saving device for an aerial work vehicle that minimizes battery consumption by turning off the power to the operation regulating device when it is not needed. be.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the aerial work vehicle is based on a telescopic boom 3 in which a base boom 4, an intermediate boom 5, and a tip boom 6 are sequentially connected in a telescopic manner to a rotating base 2 provided on a vehicle body 1. The end of the telescopic boom 3 is pivotally supported, and the telescopic boom 3 is raised and lowered by an undulating cylinder and extended and contracted by a built-in telescopic device (not shown). The space between them is insulated. A workbench 7 and a lifting device 8 are held in equilibrium at the tip of the telescopic boom 3, and the workbench 7 is equipped with a battery 9 for an upper power source and an operation regulating device 10. As shown in FIG. 2, a normally closed limit switch 1 is located between the battery 9 and the operation regulating device 10.
1 is inserted, and the operation of the limit switch 11 turns off the power to the operation regulating device 10. As shown in FIG. 3, the limit switch 11 is attached to the bracket part 12 at the tip of the tip boom 6, and the tip of the intermediate boom 5 is made of an insulating material that activates the limit switch 11 when the telescopic boom is fully contracted. The actuating piece 13 is fixed.

With the above configuration, when the aerial work vehicle is in the retracted state, the telescopic boom 3 is fully contracted, so
The limit switch 11 is in the open state, and the operation regulating device 10 is not energized. When the aerial work vehicle is in a working state and the telescopic boom 3 is extended, the limit switch 11 is in the closed state and the operation restriction device 10 is energized, and the operation restriction device 10 uses the lifting device 8. The operation regulation range of the work platform 7 is changed depending on whether or not the outriggers are extended, and when the work platform 7 reaches the regulation position, the operation of the telescopic boom 3 outside the regulation range is stopped,
Preventing aerial work vehicles from tipping over. When the telescopic boom 3 is fully retracted during work, the limit switch 1
1 is in the open state and the power to the operation restriction device 10 is cut off, but when the telescopic boom 3 is in the fully retracted state, the work platform 7 is always located within the operation restriction range, so the operation restriction device does not work. However, the aerial work vehicle will not fall over or become inoperable, and consumption of the battery 9 will be saved.

As described above, according to the present invention, the power to the regulating device is automatically turned off when regulation is not required, so the present invention is effective in saving power from the battery provided in the upper part of the aerial work vehicle.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view showing the working state of the aerial work vehicle, FIG. 2 is an electric circuit diagram, and FIG. 3 is a detailed view of the main parts. 3...Telescopic boom, 5...Intermediate boom, 6...
Tip boom, 7...Workbench, 9...Battery, 1
0...Operation regulating device, 11...Limit switch, 13...Operation piece.

Claims (1)

[Scope of utility model registration request] In an aerial work vehicle that is equipped with a power circuit equipped with a battery on the tip side of a telescoping boom in which a base boom, an intermediate boom, and an insulated tip boom are connected in a telescopic manner, a switch for cutting off the power circuit is connected to the tip boom. A power-saving device for an aerial work vehicle, characterized in that an actuating piece is attached to the tip of the intermediate boom or the base boom and that operates the switch when the telescopic boom is fully contracted. Device.