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Rock anchor rod

An anchor and solid technology, which is used in the installation of anchor rods, mining equipment, earth-moving drilling, etc. to achieve the effect of high reliability and high working capacity

Inactive Publication Date: 2009-08-26
HILTI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of the known solution is that, in order to guarantee the delivery of the rock broken up by the drill bit, the so-called cuttings, a sufficiently large gap must be provided between the wall of the borehole and the outer wall of the tubular body

Method used

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Experimental program
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Embodiment Construction

[0038] figure 1 Shows a view of the anchor according to the invention. The anchor 1 is composed of a hollow cylindrical fastening body 2 with an external profile 3. The end 4 of the fastening body 2 in the installation direction S is provided with a mounting seat for arranging the drill bit 5. The fastening body 2 at the opposite end 6 has a hexagonal shape 7, where a driving tool and a grouting device can be connected by means of an adapter (both are not shown here).

[0039] The drill bit 5 has an embedded drill edge 9, which only slightly protrudes from the outer wall of the fastening body 2 within a range of 1 mm. In addition, the drill bit 5 has two diametrically opposed holes 10.1 and 10.2. On the one hand, they are used to receive the rock crushed by the drill bit 5, so-called drill cuttings, and on the other hand, as an outlet for the grout in the fastening body 2. The anchor 1 is anchored (Vergrouten) in the borehole (not shown in the figure).

[0040] figure 2 Means ...

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PUM

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Abstract

The invention relates to an anchor rod (1), comprising a drill bit (5) and a hollow cylindrical fastening body (2), the fastening body is provided with a drill bit (5) at the end (4) on one side of the installation direction and on the opposite side The set end (6) has a hexagon (7). The multi-component mortar mass packed in the film bag (28) is placed in the inner tube (21). The drill bit (5) is provided with two outlets (10.2), and the mortar material is discharged by the pressure of the piston (27) acting on the mortar material. Between the mortar material and the drill bit (5), a channel section (29) is set in the inner pipe (21). The inner tube (21) is fixed at a predetermined distance between the outer wall of the inner tube (21) and the inner wall of the fastening body (2) by means of spacers, so as to form at least one suction channel (22).

Description

Technical field [0001] The present invention relates to an anchor, especially used in mining and / or tunnel engineering, which includes a drill bit and a hollow cylindrical fastening body. The fastening body has a mounting seat for arranging the drill bit at the end on one side of the installation direction, and has an action part at the opposite end. A single-component or multi-component grout is preferably packaged in a film bag in the fastening body. The anchor is provided with at least one outlet, and the grout is discharged from the outlet by the pressure of the piston acting on the grout. A passage section is provided between the grout and the at least one outlet. Background technique [0002] Rock bolts are used to stabilize the walls of cavities such as tunnels, flat caves, etc., and in such a way that the rock mass regions adjacent to the walls are fixed to each other. In many cases, the starting point is that the area adjacent to the wall where the mechanical properties ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D20/00E21D21/00E21D20/02
CPCE21D2021/0053E21D21/0033E21D20/021E21D21/0053
Inventor 莱布哈德·埃里希吉瑙·罗兰路德维希·沃尔夫冈
Owner HILTI AG