RU191411U1 - CLEANING ANCHOR - Google Patents

Abstract

The utility model relates to mining, and in particular, to means for attaching workings during the development of reservoir mineral deposits and can be used, in particular, for attaching the roof, sides of the main and preparatory workings, as well as for anchoring winches to the soil of the workings. Technical result of the utility model consists in increasing the reliability of the structure by increasing the bearing capacity of the installed anchor lining and eliminating the deformation of the product. The technical result is achieved by the fact that the powers and it has a single central opening whose diameter exceeds the diameter of the anchor rod. The technical result is also facilitated by the fact that the wedge of the wedge-shaped lock has three lateral protrusions, the inner parts of the sides of the wedge-shaped lock have a concave shape, and the upper part of the holder has a rounded profile for fixing the spring.

Description

The utility model relates to mining, and in particular, to means for attaching workings during the development of stratified mineral deposits and can be used, in particular, for attaching the roof, sides of the main and preparatory workings, as well as for anchoring winches to the soil of the workings.

A variety of anchor designs are known, of which the closest analogue of the proposed utility model is a wedge anchor (patent for utility model of the Russian Federation No. 72271), including a threaded anchor rod, onto which a wedge of a wedge lock is wound, a holder with which the sides of the wedge lock are fixed, a spring , washer, anchor support and tension nut.

The disadvantage of this design is that the wedge lock before installation in the hole can be located exclusively on the end of the bottomhole part of the anchor rod, since the holder prevents the passage of the rod further. However, when using wedge anchors, it is often necessary to position the wedge lock closer to the wellhead, since the bearing capacity of the rocks over the length of the borehole is different and closer to the bottom of the borehole may not be optimal. Shortening the anchor rod can solve this problem, but in mining conditions this is most often impossible. The presence of slits on the flat part of the holder in theory should contribute to piercing the hole in the holder with the rod when installing the anchor due to the weakening of the circular contour of the future hole, but in practice this leads to deformation of the holder and rupture when the rod rotates with force, which leads to improper jamming of the anchor , since deformation of the upper part of the holder leads to distortions of the lateral parts of the wedge-shaped lock and the failure of the anchor before its installation is completed. If the hole in the holder can still be punched, its diameter is less than the diameter of the rod (the outer diameter of its thread), as a result of which, during rotation of the anchor rod and its passage through the holder, the holder is deformed by the threads, which again leads to uneven jamming of the anchor .

The technical result of the utility model is to increase the reliability of the structure by increasing the bearing capacity of the installed anchor support and eliminating the deformation of the product.

The technical result is achieved by the fact that the holder has one central hole, the diameter of which exceeds the diameter of the anchor rod. The technical result is also facilitated by the fact that the wedge of the wedge-shaped lock has three lateral protrusions, the inner parts of the sides of the wedge-shaped lock have a concave shape, and the upper part of the holder has a rounded profile for fixing the spring.

The utility model is illustrated in the drawing, where the figures show:

FIG. 1 - Wedge-mounted anchor assembly.

FIG. 2 - wedge lock.

FIG. 3 - holder.

FIG. 4 - sidewall wedge lock.

FIG. 5 - wedge wedge lock.

FIG. 6 - spring.

In the figures, the positions show:

1 - anchor rod

2 - wedge

3 - holder

4 - sidewalls

5 - spring

6 - supporting anchor washer

7 - a tension nut

8 - lateral protrusions of the wedge

The utility model operates as follows.

The wedge-lock using the internal thread of the wedge (2) is screwed onto the anchor rod (1) at the required distance from the tail of the anchor, after which the wedge-lock is inserted into the hole and wedged in the hole by rotation of the anchor rod (1). The dismantling of the anchor is carried out by the reverse sequence of the same operations and allows the reuse of the product.

When rotating the anchor rod installed in the hole, the lateral protrusions (8) prevent the wedge (2) from rolling and contribute to the expansion of the sides of the wedge-lock (4) in the hole, since when the rotation force is transmitted to the wedge (2) from the anchor rod (1), the wedge (2) turns and gets lateral protrusions into the internal recesses of the sides of the wedge-shaped lock (4), having a concave shape, and moves down the anchor rod (1) maximally expanding the sides (4), which, due to their concave shape, have a maximum thickness in the lower part.

Before installation in the hole, the sides of the wedge-lock (4) are located on the planes between the protrusions on the wedge (2), as close as possible to the anchor rod (1), which ensures the minimum dimensions of the wedge-lock.

Due to the central hole in the holder (3), the diameter of which exceeds the diameter of the anchor rod (1), the wedge-lock can be easily located at the required distance from the mouth of the hole and fixed in the rock layer with the greatest bearing capacity.

The hole in the holder (3), the diameter of which exceeds the diameter of the anchor rod (1) also contributes to the mobility of the holder (3) and the sides of the wedge-lock (4) relative to the wedge (2) and the anchor rod (1), coupled to the wedge-lock by means of a spring (5 ), which allows the sidewalls (4) to be installed in the optimal position during installation.

The rounded profile of the upper part of the holder (3) determines the equidistant arrangement of all sections of the spring (5) from the anchor rod (1), eliminates the contact of these parts and damage to the spring (5) and ensures its free movement.

In preferred embodiments, the anchor rod (1) can be made of reinforcing bars with a helical profile, of round steel or welded from these two materials.

The proposed product has the following additional advantages:

The possibility of reusable use;

The ability to extract the anchor to prevent clogging of the rock mass with metal;

No need to use polymer ampoules;

High bearing capacity of the anchor;

High speed and ease of installation;

The ability to carry a full load immediately after installation in a hole;

The ability to mechanize the installation process of anchors;

Possibility of use in combination with a cement-sand mixture to ensure quick pre-tensioning;

Relatively light weight of anchor support.

Claims (4)

1. Wedge-stop anchor, including an anchor rod with a screw thread, a support anchor washer, a tension nut and a wedge lock, consisting of a wedge with a screw thread, a spring and a holder with three flange clamps to which the sides of the wedge lock are connected, characterized in that the holder has one central hole, the diameter of which exceeds the diameter of the anchor rod. 2. Clinical expansion anchor according to claim 1, characterized in that the wedge has three lateral protrusions. 3. Wedge-stop anchor according to claim 1 or 2, characterized in that the inner parts of the sides of the clinch-stop lock are concave. 4. Wedge anchor according to one of paragraphs. 1-3, characterized in that the upper part of the holder has a rounded profile for fixing the spring.

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