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Control system and method for automatically adjusting moving speed of cutting arm of cantilever type heading machine

A cantilever roadheader and self-adjusting technology, applied in earth-moving drilling, mining equipment, tunnels, etc., can solve problems such as damage to electrical components and mechanical structures, overloading of cutting motors and driving cylinders, and increased load on cutting parts. , to achieve the effect of reducing energy consumption ratio, reducing wiring, and simplifying control

Pending Publication Date: 2021-03-26
CITIC HEAVY INDUSTRIES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the cutting arm moves at a constant speed to cut rocks with high hardness, the load on the cutting part will increase, resulting in overloading of the cutting motor and drive cylinder, and damage to electrical components and mechanical structures

Method used

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  • Control system and method for automatically adjusting moving speed of cutting arm of cantilever type heading machine
  • Control system and method for automatically adjusting moving speed of cutting arm of cantilever type heading machine
  • Control system and method for automatically adjusting moving speed of cutting arm of cantilever type heading machine

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Embodiment Construction

[0026] Such as figure 1 As shown, a control system for automatically adjusting the moving speed of the cutting arm of the cantilever roadheader includes: a display screen in the cab showing parameters such as current and hydraulic pressure; The double-axis operating lever with buttons; the dual-axis operating lever on the remote controller to adjust the moving speed of the cutting arm and the speed gear selection knob of the cutting arm; the processing current acquisition system with high performance and high protection level set in the control cabinet The signal vehicle-mounted mobile controller is connected to the hydraulic proportional solenoid valve driven by the PWM technology output current signal in the hydraulic valve group through the mobile vehicle PWMI output module in the valve junction box; the ascending and descending hydraulic cylinders and the left and right The four electro-hydraulic proportional pressure regulating valves of the rotary hydraulic cylinder are ...

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Abstract

The invention belongs to the technical field of engineering machinery, and discloses a control system and method for automatically adjusting the moving speed of a cutting arm of a cantilever type heading machine. The control system is provided with a ship-shaped double-position button for adjusting the moving speed gear of the cutting arm, a double-shaft operating rod arranged on a remote controller and used for adjusting the moving speed of the cutting arm, and a cutting arm moving speed gear selecting knob arranged on the remote controller; a signal vehicle-mounted mobile controller which isarranged in a control cabinet and is used for processing signals acquired by a current acquisition system with high performance and high protection level is connected with a hydraulic proportional electromagnetic valve which is arranged in a hydraulic valve bank and is driven by a current signal output by applying a PWMI technology through a mobile vehicle PWMI output module in a valve junction box; and four electro-hydraulic proportional pressure regulating valves of ascending-descending hydraulic cylinders and left-right rotary hydraulic cylinders in the hydraulic valve bank are actuating mechanisms for controlling the hydraulic cylinders to move up and down and left and right. According to the control system and method, the service life of equipment is prolonged, and the production efficiency is improved. The problem of frequent shutdown caused by heavy current overload is reduced, and the use is more humanized and intelligent.

Description

technical field [0001] The invention belongs to the technical field of construction machinery, and in particular relates to a control system and method for automatically adjusting the moving speed of a cutting arm of a cantilever roadheader. Background technique [0002] The cantilever roadheader is an important part of tunnel excavation engineering machinery, which can realize continuous cutting, loading and transportation. The rock composition inside the tunnel is not uniform, and the hardness of the different rock composition areas is not the same. When the cutting arm moves at a constant speed to cut rocks with high hardness, the load on the cutting part will increase, resulting in overloading of the cutting motor and drive cylinder, and damage to electrical components and mechanical structures. [0003] The roadheader is divided into cab control mode and remote control mode. In the cab control mode, because the operator is close to the cutting arm, the operator manuall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10
CPCE21D9/108
Inventor 崔郎郎李政陈丕山胡国辉王巍峰郭守乾苗军克黎飞马坤鹏韩金斌童诏郭庶李娟任莉莉
Owner CITIC HEAVY INDUSTRIES CO LTD
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