Engineering mechanism including fine regulation and operation mode

Abstract

Various work machines in which safety of operation and operation efficiency can be enhanced in accordance with variation in the kind of operation and operation condition when operation is carried out based on a previously set operation mode of an operation machine, and operation speed of the operation machine or running speed of the work machine can finely be adjusted is provided. The work machine includes mode switching means including a mode switching switch (9) and the like of operation modes of one or more operation machines. A speed finely-adjusting switch (8b) is disposed for finely adjusting an operation speed and / or a running speed to values out of range set in each mode by manual operation. An engine (1), a pump (2), a flow rate adjusting valve (4) disposed in a driving circuit of one or more operation machine and running motor and the like are operated by a signal output by operating the speed finely-adjusting switch, and the engine revolution number and the pump discharge amount are adjusted.

Description

technical field [0001] The present invention relates to a self-propelled construction machine including various modes of operation, such as a bulldozer or an industrial tractor, and more particularly, to a self-propelled construction machine capable of operating in various modes of operation according to changes in the type of operation or operating conditions. The operating speed of the machine and the travel speed of the construction machine are increased to a desired speed range (beyond the operating mode range) of the construction machine. Background technique [0002] There are known various construction machines used in construction or civil engineering. This type of construction machine includes a revolving body mounted on a running body, the revolving body is rotatable about a vertical axis, and has, for example, a main boom, a stick boom, and a bucket. In this construction machine, the pressure oil delivered from the variable displacement pump driven by the engine ...

AI Technical Summary

Problems solved by technology

[0012] The present invention can solve the above-mentioned conventional problems, and the special purpose of the present invention is to provide various construction machines, which can be operated according to a preset operation mode of an operation machine, according to the change of the operation type and the operation condition. To improve operational safety and operational efficiency, and to enable the operating speed of the manipulator or the operating speed of construction machinery to be precisely adjusted

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