Hydraulic digging arm for mining
It was developed for bad working conditions where workers need the hydraulic digging equipment which could rotate big angle with long arms.
This equipment was fully controlled by hydraulic with the advantages of compact structure, and small size, which could save energy, be easily controlled and produce less pollution, at the same time achieve the all kinds of mechanized duties under the mine and increase efficiency.
Hydraulic digging arm contains scraper pan, pan arm, vice arm, arm, rotating seat, reversal seat, underpan, walking areas, and hydraulic control system.
After getting to the face by trance flat car, the hydraulic control system offers the energy to the vice arm.

Then the vice arm offers the energy to the pan arm, which connects the scraper pan to excavate
The rotating seat could rotate to left or right from the hydraulic cylinder.
The reversal seat could reverse a maximum of 70 degrees and connect the scraper pan, pan arm, vice arm, arm making the function of full cleaning achieved.
When the driving machine needs to walk, walking machine will stretch four lifting cylinders out, and lift the slider brace, drive the cylinder, drive the body forward or back, and the maximum of each step is 650mm, helping to achieve walking or moving.

Hydraulic Excavating Arm for Coal Mining Under the Ground

Basic Parameter
Items Value
Min inside mine size（mm）
（Length x Width x Height） 3850×1400×1800mm
Max Working size（mm）
（Length x Width x Height） 4950×1900×3550mm
maximum digging height 4800mm
least radius of gyration 1700mm
maximum digging depth 1500mm
Maximum turning radius 4400mm
Volume of bucket 0.1m3
Body rotation 240°
rotation angle 70°
Pressure 31.5MPa
weight 4500kg Hydraulic Hoisting Machine With Double Arms For Coal Mining Under The Ground Made in China
website:http://www.liaoningminingmachinery.com/install-and-withdraw-general-equipment-for-coal/hydraulic-hoisting-machine-with-double-arms-for/