The utility model discloses a bolt excavation face support forestope, composed of bolt and double pin hinged top beam on the bolt through the nut and the backing plate is fixed on the connecting plate of the saddle, suspension at both ends of the upper connecting plate has two harness bolt length, bolt screwed in the upper clamping nut and under the clamping nut, the bolt in the card between the nut and the card nut is arranged on the middle plate and inverted saddle shaped lower connecting plate, double pin hinge roof the card installed in the middle plate and a lower connecting plate between. Compared with the prior art, the utility model has the advantages of adjusting the top surface of the tunnel or the tunnel, preventing the roof beam from sticking to the rock surface, increasing the contact surface and preventing falling roof and falling rocks.
【技术实现步骤摘要】
【技术保护点】
１．掘进工作面锚杆支护前探梁，由锚杆（４）和双销铰接顶梁（９）组成，其特征在于：在锚杆（４）上通过螺母（３）和垫板（２）固定有马鞍形上连接板（１），在上连接板（１）的两端悬吊有两根等长的通丝螺栓（６），在螺栓（６）上旋装有上卡紧螺母（８）和下卡紧螺母（１１），在上卡紧螺母（８）和下卡紧螺母（１１）之间的螺栓杆上穿装有中间卡板（７）和倒马鞍形下连接板（１０），所述的双销铰接顶梁（９）卡装在中间卡板（７）和下连接板（１０）之间。
【技术特征摘要】
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