Special-shaped hole grouting reinforcement anchor rod for supporting
A technology of grouting reinforcement and special-shaped holes, which is applied in construction, sheet pile walls, foundation structure engineering, etc., and can solve the problems of low pull-out resistance and small axial contact area of anchor rods
Pending Publication Date: 2020-12-22
LIAONING INST OF SCI & TECH
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Problems solved by technology
[0005] The purpose of the present invention is to provide a special-shaped hole grouting reinforcement bolt for support in view of the problems of small axial contact area with the surrounding rock and small pull-out resistance of the existing grouting bolt after construction.
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Embodiment Construction
[0021] In order to further describe the present invention, a special-shaped hole grouting reinforcement anchor rod for supporting of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0022] like Figure 1-6 As shown in the figure, a special-shaped hole grouting reinforcement anchor rod for support includes a tunneling mechanism, a reaming mechanism, and an anchor tail mechanism. The tunneling mechanism includes a drill bit 1 and a main shaft 2; Passive connecting rod 7, active connecting rod 8, active connecting rod A81, active connecting rod B82, thread 9, limit block 10, fixed block 11, movable block 12, rotating shaft A131, rotating shaft B132, rotating shaft C133, knife belt 14, inner The screw 17; the anchor tail mechanism includes the anchor plate 4, the turntable 5, the stopper 15, the motor 16, the grouting hole 18, the exhaust hole 19, and the circumferential gear 20; the drill bit 1 is conne...
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The invention provides a special-shaped hole grouting reinforcement anchor rod for supporting. The special-shaped hole grouting reinforcement anchor rod comprises a tunneling mechanism, a reaming mechanism and an anchor tail mechanism, wherein movable blocks and limiting blocks are arranged on a secondary shaft; threads are arranged between the movable blocks and the limiting blocks on the secondary shaft; circular holes with internal spirals are formed in the lower ends of the movable blocks; the secondary shaft penetrates into the circular holes, and the threads on the secondary shaft and the circular holes with the internal spirals in the lower ends of the movable blocks work in a coordinated mode; the four movable blocks are evenly arranged on the front side of a fixed circular ring; four fixed blocks are evenly arranged on the rear side of the fixed circular ring; the fixed blocks are rotationally connected with driven connecting rods through rotating shafts A; the movable blocksare rotationally connected with driving connecting rods through rotating shafts C; and the other ends of the driving connecting rods are rotationally connected with the other ends of the driven connecting rods through rotating shafts B. The secondary shaft rotates to drive the movable blocks to move forwards, meanwhile, the driving connecting rods drive the driven connecting rods to be in a foldedstate, a main shaft rotates to drive the driving connecting rods and the driven connecting rods to rotate in the circumferential direction to form special-shaped holes, and the anchoring acting pointof the anchor rod is firm and reliable through the special-shaped holes and splitting grouting; and the supporting effect is greatly improved.
Description
technical field [0001] The invention relates to a special-shaped hole grouting reinforcement anchor rod for support, which is especially suitable for support in the fields of deep foundation pit, side slope protection and the like. Background technique [0002] At present, bolts are widely used in the field of surrounding rock support as a low-cost, obvious effect and convenient on-site construction support method. In the article "Application of Hollow Spiral Grouting Bolt in Blocking High Temperature and High Pressure Sandstone Aquifers" published in the 8th issue of "Shandong Coal Science and Technology" in 2014, a hollow spiral grouting bolt was introduced. It is composed of tray, sealing sleeve, welding wire tube, welding tube, grouting port and grouting port. The rod body of the hollow spiral grouting anchor rod is in the form of a screw screw structure, the tail is welded on the seamless steel pipe, and the pipe thread is processed. Under the action of high pressure,...
Claims
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IPC IPC(8): E02D5/74E02D5/76E02D15/04
CPCE02D5/74E02D5/76E02D15/04E02D2250/003E02D2600/30
Inventor 董志贵刘峰张颖
Owner LIAONING INST OF SCI & TECH