JPH03125799U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1 is a side view showing the overall structure of the aerial work vehicle, Figure 2 is a rear view of the same, Figure 3 is an electric circuit diagram for controlling the operation of the boom, and Figure 4 is a diagram showing the operation of the boom. FIG. 7 is an electrical circuit diagram showing another embodiment for control. 1...Vehicle body, 2...Swivel post (swivel base), 3
...Boom, 6...Workbench, 10a, 10b...
Operation unit, LS1 to LS5...Limit switch.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A swivel platform is rotatably mounted on the vehicle body, a telescopic boom is provided on the swivel platform to be able to rise and fall freely, a work platform is provided at the tip of the boom, and the boom is mounted on the vehicle body. In an aerial work vehicle stored near an obstacle placed on a platform, when the boom is tipped down, a tipping stop means stops the tipping operation when the boom reaches just before interfering with the obstacle; and a swing stop means for stopping the swing operation of the boom when the boom reaches a swing storage position where the boom can be lowered to the storage position without interfering with the obstacle, when the boom is turned, A high place characterized in that, when the boom is stopped from falling down, the boom can be stopped at the swing and retracted position by the swing stop means, and the boom is configured to be able to fall down again from the swing and storage position. Boom interference prevention device for work vehicles. 2. The boom interference prevention device for a high-altitude working vehicle according to claim 1, wherein when the boom that has been laid down again from the swivel storage position reaches a tilting angle in front of the storage position, the lifting operation of the boom is stopped. The front stopping means includes a boom fully retracted detecting means for detecting that the boom is fully retracted, and the pre-storage stopping means causes the boom to lie down only when the boom fully retracted detecting means detects that the boom is fully retracted. A boom interference prevention device for an aerial work vehicle, characterized in that the boom is configured to be able to be lowered from just before the storage position where the overturning operation is stopped to the storage position. 3. The boom interference prevention device for an aerial work vehicle according to claim 1 or 2, characterized in that an extension regulating means for regulating the extension of the boom in the retracted position is provided. . 4. In the boom interference prevention device for an aerial work vehicle according to claim 1, 2, or 3, when the overturning operation of the boom is not stopped by the overturning stop means,
1. A boom interference prevention device for an aerial work vehicle, characterized in that a storage switch is provided to enable the rotation stop means regardless of the boom angle. 5 An aerial work vehicle in which a swivel platform is rotatably mounted on the vehicle body, a telescoping boom is provided on the swivel platform in a manner that it can be raised and lowered freely, a work platform is provided at the tip of the boom, and the boom is stored on the vehicle body. , comprising a swing stop means that stops the swing of the boom when the boom reaches a swing storage position where the boom is stored in the vehicle body, and a storage switch that makes the swing stop means operable regardless of the boom angle. A boom interference prevention device for aerial work vehicles.