Anchor rod with built-in resin anchoring agent

Abstract

The utility model relates to an anchor rod with a built-in resin anchoring agent, which comprises a tubular rod body and the resin anchoring agent positioned in the rod body, a piston is arranged behind the resin anchoring agent, and an anchoring agent coating separator and a mixer which are positioned in front of the resin anchoring agent are fixedly connected in the rod body. An anchoring agent penetrating hole is formed in the anchoring agent coating separator, a plurality of sharp teeth are fixedly connected into the anchoring agent penetrating hole, the outer diameter of the rod body is small, and the resin anchoring agent is arranged in the rod body, so that the drilling rod is suitable for common drilling. The rod body is pushed into a drilled hole, the anchoring agent is pushed out of the rod body in a pushing and pressing mode, then resin anchoring and stirring are completed, the anchor rod can be installed only through two-step operation from drilling to installation, the packaging outer skin of the anchoring agent can be filtered, the packaging outer skin cannot continue to be extruded outwards, and therefore the anchoring agent can be installed conveniently. Therefore, smooth extrusion of the anchoring agent is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of mine tunnel anchor support, in particular to an anchor with a built-in resin anchoring agent. Background Art

[0002] my country's underground coal mines construct more than 12,000 km of tunnels each year, and the tunnels are mainly supported by resin anchors. The construction of a resin anchor requires multiple processes such as drilling, withdrawing the drill rod, installing resin, installing the anchor, mixing resin, and pre-tightening the anchor, resulting in a long tunnel excavation support time, slow tunneling speed, imbalanced mining ratio, and tunnel excavation cannot meet the needs of mining. At the same time, this construction process is not easy to achieve automation and unmanned operation. Workers construct anchors under unsupported roofs with poor safety and high labor intensity. With the development of coal mine equipment technology and unmanned working face technology, it has become a top priority to develop new anchors that can be automated. For example, the patent with application number 201910521961.X discloses a full-length anchor self-drilling anchor and anchoring method. The rod body comes with a drill bit and a resin anchoring agent. The resin is pushed out by the piston driven by high-pressure water, and the drilling, anchoring and injection construction can be completed in one step, with a fast construction speed. However, due to its complex internal structure, relatively thick outer diameter of the rod, large drill bit size, high cost, and high requirements for supporting construction equipment, the packaging bag of the resin anchor may be pushed out together with the anchor during the pushing process, which can easily block the outlet. Utility Model Content

[0003] The utility model aims at solving the deficiencies of the prior art and provides an anchor rod with a built-in resin anchoring agent.

[0004] The utility model is realized by the following technical scheme, providing an anchor rod with a built-in resin anchor, comprising a tubular rod body and a resin anchor located in the rod body, wherein an anchor coat separator located in front of the resin anchor is fixedly connected to the rod body, an anchor coat separator is provided with an anchor through hole, and a plurality of sharp teeth are fixedly connected to the anchor through hole. In this scheme, the sharp teeth arranged in the anchor through hole are used to pierce the packaging bag of the anchor and filter the outer skin of the packaging to ensure that the outer skin of the packaging will not continue to be squeezed outward.

[0005] As an optimization, the anchoring agent passing hole is a tapered hole and the hole diameter gradually decreases from the back to the front. In this solution, the anchoring agent passing hole is a tapered hole to guide the flow direction of the anchoring agent.

[0006] As an optimization, the front end outlet of the rod body is fixedly connected with a grease outlet joint, and the side of the grease outlet joint is provided with a grease outlet hole connected to the inside of the rod body. The grease outlet hole in this solution is arranged on the side of the grease outlet joint, which facilitates the extrusion of the resin anchoring agent in the rod body and prevents the grease outlet hole from being blocked by stones dropped from the drill hole during the installation of the rod body.

[0007] As an optimization, the front end of the grease outlet connector is tapered, which is convenient for installation into the drilled hole.

[0008] As an optimization, the grease outlet connector is threadedly connected to the inner hole of the rod body, so as to facilitate the fixed installation of the grease outlet connector.

[0009] As an optimization, a piston is installed in the rod body behind the resin anchoring agent. When in use, this solution can be connected to high-pressure water and pressed against the piston end at the rear end of the rod body, so that the high-pressure water pushes the piston forward and squeezes the resin anchoring agent forward.

[0010] As an optimization, the outer ring of the piston is provided with a sealing ring. The sealing ring in this solution improves the sealing performance of the piston.

[0011] As an optimization, the outer ring of the rod body is provided with a plurality of protrusions. The protrusions provided in this solution increase the roughness of the rod body and increase the anchoring force when the rod body is anchored.

[0012] As an optimization, a mixer located in front of the anchor coat separator is fixedly connected in the rod body, a mixing through hole is opened on the mixer, and a toothed fork is fixed in the mixing through hole. The toothed fork provided in this solution can make the two components of the anchoring agent be mixed evenly.

[0013] The beneficial effects of the utility model are as follows: the utility model provides an anchor rod with a built-in resin anchoring agent, the outer diameter of the rod is relatively thin, the rod body has a built-in resin anchoring agent, and is suitable for ordinary drilling. The rod body is pushed into the drilled hole, and the anchoring agent is pushed out of the rod body by pushing, and then the resin anchoring and stirring are completed. From drilling to installation, only two steps are required to complete the installation of the anchor rod, and the outer skin of the anchoring agent packaging can be filtered to ensure that the outer skin of the packaging will not continue to be squeezed out. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0015] As shown in the figure:

[0016] 1. Rod body, 2. Nut, 3. Piston, 4. Resin anchor, 5. Anchor coat separator, 6. Mixer, 7. Grease outlet joint, 8. Grease outlet hole, 9. Sharp teeth. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0018] like Figure 1As shown, an anchor rod with built-in resin anchoring agent of the utility model includes a tubular rod body 1 and a resin anchoring agent 4 located in the rod body 1. The rod body 1 is a hollow structure, and the outer ring of the rod body 1 is provided with multiple protrusions to increase the roughness of the rod body 1 and increase the anchoring force when the rod body is anchored.

[0019] The rod body 1 is equipped with a piston 3 located behind the resin anchor 4. The inner hole wall of the rod body 1 is smooth, and the piston 3 can slide back and forth smoothly. The piston 3 is cylindrical and is processed with high-strength and light-weight materials. A groove matching the tie buckle is dug at the end of the piston 3 that contacts the anchor. The outer ring of the piston 3 is equipped with a sealing ring. Specifically, a groove is dug on the outer circle of the piston 3 to place the sealing ring, so that the sealing ring is sealed with the inner circle of the rod body. The length of the piston should match the internal shape of the rod body. In order to increase the sealing effect of the piston body, a sealing material can be selected to process the piston as a whole.

[0020] The rear end of the rod body 1 is processed with an external thread, which is matched with the nut 2 to apply pre-tightening force, and the front end of the rod body 1 is processed with an internal thread. The front end outlet of the rod body 1 is fixedly connected with a grease outlet connector 7, and the grease outlet connector 7 is threadedly connected with the inner hole of the rod body 1. The front end of the grease outlet connector 7 is conical, which is convenient for installation in the drilled hole.

[0021] The grease outlet joint 7 has a grease outlet hole 8 connected to the inside of the rod body 1 on its side. The grease outlet joint 7 is cylindrical and has a central blind hole, and the grease outlet hole 8 is connected to the central blind hole. This facilitates the extrusion of the resin anchoring agent in the rod body, and prevents the grease outlet hole from being blocked by stones dropped from the drilled hole during the installation of the rod body.

[0022] The rod body 1 is fixedly connected with an anchor coat separator 5 located in front of the resin anchor 4. The anchor coat separator 5 is provided with an anchor through hole. The anchor through hole is a tapered hole and the hole diameter gradually decreases from the back to the front. A plurality of sharp teeth 9 are fixedly connected to the anchor through hole. The sharp teeth 9 are regular or irregular in shape. The tapered hole is used to guide the flow direction of the anchor. The sharp teeth 9 are used to pierce the packaging bag of the anchor and filter the outer skin of the packaging to ensure that the outer skin will not be squeezed into the hole of the mixer component.

[0023] The rod body 1 is fixedly connected with a mixer 6 located in front of the anchor coat separator 5. The anchor passes through the conical hole and enters the mixer. The mixer 6 is provided with a mixing through hole, and a toothed fork is fixed in the mixing through hole.

[0024] To ensure that the two components of the resin anchor are mixed evenly, the anchor is specially formulated with a solid-to-glue ratio of 1:3-1:1, and the fluidity of the glue must be ensured. To make the mixer work fully, the mixer cannot rotate freely and is fixed in the rod body by connection. To increase the compressive strength of the mixer, the mixer can be installed in a hollow cylinder. When the anchor is squeezed out with force, the mixer will not be deformed and damaged due to excessive pressure.

[0025] The use of the utility model:

[0026] First, drill the anchor hole, install the assembled anchor of the present application into the drill hole, insert the grease outlet joint 7 into the bottom of the drill hole, use the equipment to connect the high-pressure water, and press it on the piston end at the rear end of the rod body 1. The high-pressure water pushes the piston 3 forward to extrude the resin anchor 4 forward, the tapered hole of the anchor coat separator 5 is used to guide the flow direction of the anchor, and the sharp teeth 9 are used to pierce the packaging bag of the anchor and filter the packaging skin to ensure that the packaging skin will not continue to extrude outward.

[0027] The anchoring agent is mixed and passed through the toothed fork in the hole. After being fully mixed, it is squeezed out from the grease outlet hole 8 on the side of the grease outlet joint 7. The anchoring agent finally goes down through the annular gap between the rod body and the drill hole to perform resin anchoring on the rod body. After reaching the specified gel time, the nut 2 is pre-tightened to complete the installation of the rod body 1. A set of rod body connection tools can complete multiple functions without the need to replace tooling tools multiple times.

[0028] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An anchor rod with a built-in resin anchoring agent, comprising a tubular rod body (1) and a resin anchoring agent (4) located inside the rod body (1), characterized in that: An anchor coat separator (5) located in front of the resin anchor (4) is fixedly connected to the rod body (1), and an anchor coat separator (5) is provided with an anchor through hole, and a plurality of sharp teeth (9) are fixedly connected to the anchor through hole.

2. The anchor rod with built-in resin anchoring agent according to claim 1, characterized in that: The anchoring agent passing hole is a tapered hole and the hole diameter gradually decreases from the back to the front.

3. The anchor rod with built-in resin anchoring agent according to claim 1, characterized in that: A grease outlet connector (7) is fixedly connected to the front end outlet of the rod body (1), and a grease outlet hole (8) communicating with the interior of the rod body (1) is formed on the side of the grease outlet connector (7).

4. The anchor rod with built-in resin anchoring agent according to claim 3, characterized in that: The front end of the grease outlet connector (7) is tapered.

5. The anchor rod with built-in resin anchoring agent according to claim 3, characterized in that: The grease outlet joint (7) is threadedly connected to the inner hole of the rod body (1).

6. The anchor rod with built-in resin anchoring agent according to claim 1, characterized in that: The rod body (1) contains a piston (3) located behind the resin anchoring agent (4).

7. The anchor rod with built-in resin anchoring agent according to claim 6, characterized in that: The outer ring of the piston (3) is provided with a sealing ring.

8. The anchor rod with built-in resin anchoring agent according to claim 1, characterized in that: The outer ring of the rod body (1) is provided with a plurality of protrusions.

9. The anchor rod with built-in resin anchoring agent according to claim 1, characterized in that: A mixer (6) located in front of the anchor coat separator (5) is fixedly connected inside the rod body (1), and a mixing through hole is provided on the mixer (6), and a tooth-shaped fork is fixedly connected inside the mixing through hole.

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