A walking excavator remote control system

Abstract

The invention discloses a remote control system of a walking excavator, and belongs to the technical field of walking excavators. The remote control system is characterized in that an electronic controlled switching valve is serially connected into an original pilot control oil circuit and is used for opening or closing the hydraulic pilot oil circuit, then a proportional electromagnetic valve is connected between a hydraulic pilot control handle and pedal combination and a main control multi-way valve in parallel, relays (1) are respectively connected onto a circuit of a starting relay, a circuit of a flameout electromagnetic valve, a circuit of a loudspeaker and a circuit of a brake electromagnetic valve in parallel, and a remote control module is added to the remote control system and comprises a PLC (programmable logic controller), a transmitter and a receiver. An electronic control unit is introduced into the remote control system on the premise that merits of automatic operation and full-hydraulic pilot control flexible operation are kept, modification of a remote control function is facilitated, and the remote control system is simple in structure and low in cost. Besides, a group of relays (1) is connected onto the starting circuit, the flameout circuit, the loudspeaker circuit and the brake circuit in parallel respectively and are used for actuating remote control instructions to control basic electric functions, and the remote control functional module mainly comprises the transmitter, the receiver, the PLC and an accelerator actuator.

Description

technical field [0001] The invention relates to a remote control system for a walking excavator, which belongs to the technical field of walking excavators. Background technique [0002] As an important equipment in engineering construction, walking excavator plays an extremely important role in the construction of industrial and civil buildings, transportation, water conservancy and electric power engineering, mining and military engineering. Safety, comfort and productivity, as well as reducing operator labor intensity all play an extremely important role. Remote control operation will change the shackles of traditional manual operation. It is easy to use, saves manpower, and is safe to operate. It shows its incomparable superiority in industrial sites with high temperature or harmful gases and dust, as well as places that require precise alignment and loading and unloading of dangerous goods. sex. [0003] At present, there are few remote-controlled excavators for sale ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are few remote-controlled excavators for sale in the domestic market. The transformation costs are high, the structure is complicated, maintenance is inconvenient, and they cannot be reused, and the utilization rate is low. Only a few foreign construction machinery manufacturers can provide remote-controlled excavators. ,expensive

Although there are many users who require remote control functions for excavators, due to the purchase channel and product price, it cannot be widely used.

Most of the walking excavators and general excavators involved in engineering applications on the market, such as crawler and wheel excavators, most of their driving operating systems are fully hydraulic systems, which cannot be operated remotely.

[0004] Generally, the remote control transformation of walking excavators is to add a pressure sensor to the hydraulic pilot oil port to convert the hydraulic pressure signal into an electrical signal to realize remote control. Pure hydraulic control cannot realize remote control, but this method completely changes its original The hydraulic pilot controls the oil circuit, which greatly changes the system, which reduces the reliability and compliance of the hydraulic system for manual driving of the vehicle, and the structure is complex and the manufacturing cost is high, so it cannot be reused

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