wedge&barrel rock bolt

good bearing capacity for roof support  

wedge type anchor bolt 1.Material: steel 2.Fuction : used as rock bolt for support 3.Diameter : 16mm 18 mm 20mm 22mm

 

Slot and wedge bolt

Slot and wedge bolt is composed by rod ,wedge,plate,nut and so on ,have good bearing capacity for roof support

  How to work

Slot wedge rock bolt has five parts : wedge,rod,plate,spherical washer and nut .one end of high strength of rod has a cross slit ,swedge can be inserted in ,the other end has thread for hold plate ,washer , and nut . After drilling the borehole , insert swedge into slit and install other accessories , push the whole rock bolt into the end of borehole, drive external end hard so that wedge can expand cross slit ,causing large pressure between interior end and strata . The bolt can be used with cement paste or cement plaster for permanent support .

Feature

(1)       large bearing capacity for roof support

(2)       Simple structure and easy installation

(3)       When used for permanent support , should be with cement paste or cement plaster

(4)       Spherical washer provides up to 180 angle of tilt, has ‘user friendly’ rounded corners

wedge&barrel rock bolt