Mining combined anchor rod

Abstract

The utility model discloses a mining combined type anchor rod which comprises an anchoring base, a clamping block, an anchor rod and a sliding rod and is characterized in that one end of the anchor rod is fixedly connected with a threaded pipe, the other end of the anchor rod is fixedly connected with a slurry discharging pipe, and one end of the slurry discharging pipe is fixedly connected with the anchoring base; a sliding rod is connected into the anchor rod in a sliding mode. The anchor rod has the advantages that the screw rod is added to be matched with the anchor rod to enhance the overall shear strength of the anchor rod, the anchoring base is matched with the clamping block to increase the contact area with slurry, stability is better, the risk that anchoring falls off is avoided, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine tunnel support, in particular to a combined anchor rod for mining. Background Art

[0002] Tunnel support primarily provides a certain level of support resistance to the surrounding rock, or reinforces the surrounding rock to form a reinforced layer in the shallower part of the surrounding rock. Its essential function is to control deformation and damage in the surrounding rock within the anchoring zone, such as delamination, sliding, crack opening, and the generation of new cracks. This creates a secondary load-bearing structure with greater rigidity within the anchoring zone to control the development of the surrounding rock's plastic zone, prevent delamination of the rock strata outside the anchoring zone, and improve the stress distribution deep within the surrounding rock. The ultimate goal is to reduce surrounding rock displacement and maintain its stability. Anchor bolts are a common method of surrounding rock reinforcement and support used in surface engineering projects such as slopes and deep rock foundation pits, as well as in underground chambers such as tunnels and stopes.

[0003] Conventional anchor rods have poor deformation resistance and are prone to cracking. Sparks can occur during tearing, which is extremely dangerous in gassy mines. Existing hollow grouting anchor rods also typically have threads on the outer surface but no threads on the inner hollow surface. They also have uneven wall thickness and poor shear strength. When installing anchor rods at the tunnel top, they rely entirely on the injected grout for securement, making them prone to falling out and creating safety issues. Utility Model Content

[0004] In view of the defects in the prior art, the utility model provides a combined anchor rod for mining to solve the existing problems.

[0005] The utility model is realized through the following technical solutions: a combined anchor rod for mining, comprising an anchor base, a block, an anchor rod and a sliding rod, characterized in that one end of the anchor rod is fixedly connected to a threaded pipe, the other end of the anchor rod is fixedly connected to a slurry discharge pipe, one end of the slurry discharge pipe is fixedly connected to the anchor base; the sliding rod is slidably connected inside the anchor rod.

[0006] Preferably, one end of the sliding rod is fixedly connected to the cone head, the sliding rod is fixedly connected to the screw rod, the screw rod is threadedly connected in the threaded tube, and the length of the sliding rod is longer than the length of the anchor rod.

[0007] Preferably, the anchoring base is slidably connected to a first clamping block and a second clamping block, one end of the first clamping block and the second clamping block are respectively fixedly connected to a limit block, and the other end of the first clamping block is provided with a conical groove.

[0008] Preferably, a through hole is provided on the wall of the slurry discharge pipe.

[0009] Preferably, a backing plate is connected to the anchor rod and is clamped and fixed by a nut.

[0010] The beneficial effects of the utility model are embodied in that: adding screw rods to cooperate with anchor rods to strengthen the overall shear strength of the anchor rods, and the anchor base cooperates with the clamping block to increase the contact area with the mud, thereby improving stability, avoiding the risk of anchor falling, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0012] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0014] Figure 3 For this utility model Figure 2 Cross-section at AA;

[0015] Figure 4 This is a schematic diagram of the structure of the utility model when viewed from above;

[0016] Figure 5 This is a schematic diagram of the anchoring structure of the utility model;

[0017] Figure 6 This is a schematic diagram of the card block structure of the utility model.

[0018] In the attached drawings, 1. anchor base, 2. slurry discharge pipe, 3. anchor rod, 4. pad, 5. screw, 6. first clamping block, 7. threaded pipe, 8. second clamping block, 9. cone head, 10. slide rod, 11. limit block. DETAILED DESCRIPTION

[0019] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0021] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, if the device in the figures is inverted, an element described as being "below" another element or feature would be positioned "above" the other element or feature. Thus, the exemplary term "below" can encompass both above and below orientations.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation of the present invention is described in detail below with reference to specific embodiments: Figures 1-6 The utility model shown is realized through the following technical scheme: a combined anchor rod for mining, including an anchor base 1, a block, an anchor rod 3 and a sliding rod 10, characterized in that: one end of the anchor rod 3 is fixedly connected to the threaded tube 7, the other end of the anchor rod 3 is fixedly connected to the slurry discharge pipe 2, and one end of the slurry discharge pipe 2 is fixedly connected to the anchor base 1; the sliding rod 10 is slidably connected inside the anchor rod 3.

[0024] One end of the sliding rod 10 is fixedly connected to the cone head 9 , and the sliding rod 10 is fixedly connected to the screw rod 5 , which is threadedly connected in the threaded tube 7 . The length of the sliding rod 10 is longer than that of the anchor rod 3 .

[0025] The diameter of the sliding rod 10 is the same as the inner diameter of the anchor rod 3 .

[0026] The first clamping block 6 and the second clamping block 8 are slidingly connected on the anchoring base 1, and a groove is provided on the inner wall of the anchoring base 1. One end of the first clamping block 6 and the second clamping block 8 is fixedly connected to a limit block 11 respectively, and the limit block 11 is slidingly connected in the groove of the anchoring base 1. The other end of the first clamping block 6 is provided with a conical groove.

[0027] A through hole is provided on the wall of the slurry discharge pipe 2.

[0028] The anchor rod 3 is connected to the backing plate 4 and is clamped and fixed by a nut.

[0029] After the grouting is completed, the anchor rod 3 and the anchor base 1 are inserted into the drilled hole, grouting is performed through the anchor rod 3, and then the slurry is injected into the drilled hole through the through hole of the grouting pipe 2 to completely cover the anchor base 1 and the anchor rod 3. Then the sliding rod 10 is inserted into the anchor rod 3, and then the screw 5 is rotated to connect to the threaded tube 7. At this time, the cone head 9 at one end of the sliding rod 10 is inserted into the conical groove of the first clamping block 6, and a part of the first clamping block 6 and the second clamping block 8 is squeezed out of the anchor base 1 and inserted into the mud. Since the first clamping block 6 and the second clamping block 8 are fixedly connected to the limiting block 11, the first clamping block 6 and the second clamping block 8 are squeezed and fixed on the anchor base 1 by the sliding rod 10, and the first clamping block 6 and the second clamping block 8 extend out of the anchor base 1. When the mud solidifies, the blocks are stuck in the mud and are more stable. The pad 4 is clamped on the mine wall by the nut, and the anchor rod 3 will not loosen or fall off.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A combined anchor rod for mining, comprising an anchor base (1), a clamping block, an anchor rod (3) and a slide rod (10), characterized in that: One end of the anchor rod (3) is fixedly connected to the threaded pipe (7), the other end of the anchor rod (3) is fixedly connected to the slurry discharge pipe (2), and one end of the slurry discharge pipe (2) is fixedly connected to the anchor base (1); the anchor rod (3) is slidably connected to the sliding rod (10).

2. A combined anchor bolt for mining according to claim 1, characterized in that: One end of the slide rod (10) is fixedly connected to the cone head (9), and the slide rod (10) is fixedly connected to the screw rod (5). The screw rod (5) is threadedly connected in the threaded tube (7). The length of the slide rod (10) is longer than the length of the anchor rod (3).

3. The combined anchor bolt for mining according to claim 1, characterized in that: The anchoring base (1) is slidably connected to a first clamping block (6) and a second clamping block (8); one end of each of the first clamping block (6) and the second clamping block (8) is fixedly connected to a limiting block (11); and the other end of the first clamping block (6) is provided with a conical groove.

4. The combined anchor bolt for mining according to claim 1, characterized in that: A through hole is provided on the wall of the slurry discharge pipe (2).

5. The combined anchor bolt for mining according to claim 1, characterized in that: The anchor rod (3) is connected to a backing plate (4) and is clamped and fixed by a nut.

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