Mine Excavator Lifting Arm Position and Posture Detection Device and Control Method

Abstract

The invention discloses a posture detection device and a control method of a lifting arm of a mining excavator. The detection device includes a wire rope, a guide wheel, a counterweight and a pull switch; one end of the wire rope is connected to the upper side wall of the boom, the other end spans the guide wheel and connects to the upper end of the counterweight, and the two sections of the wire rope cross the guide wheel to form a 90 ° included angle, the guide wheel is fixedly installed on the excavator, the lower end of the counterweight is connected to the pull switch, the counterweight can move in the vertical direction, the pull switch is fixedly installed on the excavator, and the pull switch is connected to the lower end of the counterweight for measurement The moving distance of the counterweight in the vertical direction. The boom posture detection device and control method of the mining excavator of the present invention can not only realize the soft landing of the boom after it is jacked up, but also effectively reduce the number and magnitude of the boom being jacked up, avoiding the lifting of the boom. Booms, guys and other mechanical structures were damaged.

Description

technical field [0001] The invention relates to the technical field of mining excavators, in particular to a detection device and a control method for a lifting arm of a mining excavator. Background technique [0002] During the excavation process of the mining excavator, the bucket is forced to move from bottom to top under the joint action of the hoisting rope and the pushing mechanism, and the blade of the bucket cuts off a layer of material during the process of cutting into the material to slide down into the bucket to complete the digging load of material. [0003] figure 1 A working principle diagram of a prior art mining excavator provided as an example. Such as figure 1 As shown, when the excavator starts digging, the bucket G1 is close to the working surface, and the starting point of excavation is located at the bottom of the working surface directly below the pushing mechanism. At this time, the angle between the bucket G1 and the working surface is 45° to 50°...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned control method using the limit switch can only realize the soft landing function of the boom after the boom is jacked up, and cannot pre-control the boom to prevent the boom from being jacked up, and cannot effectively reduce the lifting load. The number and magnitude of the jib being jacked up, long-term operation will also cause damage to the jib, guy rope and other mechanical structures

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