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This product is a coal mine back anchor anchor pull up a special equipment, mainly used in coal roadway roof stress relief and recovery rigging. By a double speed for the pump (optional electric, pneumatic pumps), high-pressure hose assembly, Cable Puller composition, with small size, light weight, easy to carry, simple operation, and security features Widely used in mining, defense, transportation tunnels and other construction site. Double speed for the pump can be used alone as a small flow of high pressure oil conveying the power sourc
Parameter
⑴ Back anchor machine
rated pressure： 60 MPa；
rated pull：300 KN、 500 KN；
unit weight： 20.2㎏； Perforation dia.：15.24mm （or18 mm ）；
piston stroke： 100 mm。
⑵ Double speed for the pump
rated pressre： 60 MPa；
operating resistance：＜50 KN；
Fuel type: Two-speed commutation；
Piston dia.：Φ25、Φ12；
Rated oil-out：1 L；
High-speed discharge of oil：≈2 ml/time。
⑶ Pressure tubing assembly
Oil tube length：≈ 6 m；
Inner dia.：Φ6；
Rated pressure：≥60 MPa；
Cracking pressure：≥ 210 MPa；
Unit weight：3.6㎏。
Back anchor machine
