JPH0389096U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is an operation control circuit diagram of a working device equipped with an operation inspection system according to the present invention, Fig. 2 is a perspective view showing an aerial work vehicle equipped with the above-mentioned working device, and Fig. 3 is a control diagram showing a regulating valve. It is a circuit diagram. 2... Swivel base, 4... Boom, 40... Controller, 50... Regulation valve, 61... Mode selection switch, 62... Operation means, 65... Operation detection means.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A working device equipped with a boom capable of raising and lowering, extending and contracting, etc., comprising an operating means consisting of a lever, a switch, etc. that is operated by an operator, and the boom that an operation control means for controlling operations such as undulation, extension and contraction of the boom; an operation detection means for detecting operations such as undulation and extension and contraction of the boom; a work mode in which the boom is operated in response to operation of the operation means; mode selection means for selecting one of the inspection modes for inspecting the operation of the boom, and when the inspection mode is selected by the mode selection means, the operation control means controls the operation of the operation means. The boom is configured to output a control signal to operate the boom by a predetermined amount and then stop it in response to the control signal, and to determine whether the operation of the boom corresponding to the control signal is normal or not. A working device equipped with a distinctive operation inspection system. 2. When the working device has a display section and the inspection mode is selected by the mode selection means,
The display unit displays an operation command for the operating means, and also displays whether or not the operation of the boom detected by the operation detection means is normal in response to the operation of the operating means based on the operation command. 2. The working device according to claim 1, wherein the working device has a shape of: 3. When the working device has a working range regulating means for regulating the working range of the boom so that the overturning moment applied to the working device falls within a predetermined range, and the inspection mode is selected by the mode selecting means. According to claim 1, the boom is actuated by a predetermined amount in response to the operation of the operating means, and then the working range regulating means outputs a control signal for regulating and stopping the operation. The working device according to item 1. 4. The working range regulating means has an electromagnetically actuated valve that opens and closes a hydraulic oil supply oil passage for controlling the operation of the boom, and the inspection mode is selected by the mode selecting means, and the above-mentioned operation range is selected in response to the operation of the operating means. After the boom has been operated by a predetermined amount, when the working range regulating means outputs a control signal to stop this operation, the operation detecting means detects the output current to the electromagnetically actuated valve and determines whether the operation is normal. 4. The working device according to claim 3, wherein the working device is configured to determine whether or not the work device is operated.