Pipe seam anchor rod structure with anchoring end convenient to replace

Abstract

The utility model discloses a pipe seam anchor rod structure with an anchoring end convenient to replace, and relates to the technical field of pipe seam anchor rods, the pipe seam anchor rod structure comprises a hollow anchor rod body, a connector is arranged at the lower end of the hollow anchor rod body, an insertion block is arranged at the upper end of the connector in the inner wall of the lower end of the hollow anchor rod body, and the insertion block is in a big-end-down conical shape. A positioning groove is formed in the side wall of the inserting block, a threaded column is arranged at the lower end of the connector, a threaded sleeve is arranged on the outer wall of the threaded column and is in a hollow conical shape with the large upper portion and the small lower portion, four sets of deformation joints are formed in the side wall of the threaded sleeve at equal intervals, and a fixing nut is arranged on the outer wall of the threaded sleeve. An anchoring head is arranged at the lower end of the threaded sleeve. According to the pipe seam anchor rod structure with the anchoring end convenient to replace, the anchoring head can be rapidly disassembled and assembled, and when the anchoring end is abraded or damaged, the pipe seam anchor rod structure can be continuously used without replacing the whole anchor rod body and replacing the anchoring head.

Description

Technical Field

[0001] This utility model relates to the field of pipe joint anchor technology, and in particular to a pipe joint anchor structure that facilitates the replacement of the anchoring end. Background Technology

[0002] A common type of slotted pipe anchor is a full-length anchor that actively reinforces the surrounding rock. Its rod body is a high-strength steel pipe with a longitudinal slot made of thin steel strip. When installed in a borehole with a diameter slightly smaller than the pipe diameter, the slotted steel pipe is compressed, and the outer wall of the steel pipe is pressed tightly against the borehole wall. This immediately applies radial pressure to the borehole wall along the entire length and frictional force to prevent the surrounding rock from sliding down. Combined with the supporting force of the anchor tail tray, the surrounding rock is in a triaxial stress state, thereby achieving the stability of the surrounding rock.

[0003] In existing pipe-seam anchors, the anchoring end is usually fixedly connected to the anchor body. When the anchoring end wears or is damaged due to long-term stress or changes in geological conditions, the entire anchor needs to be replaced, which not only increases material costs but also affects construction efficiency. In order to overcome the shortcomings of existing technology, we propose a pipe-seam anchor structure that facilitates the replacement of the anchoring end. Utility Model Content

[0004] The main objective of this invention is to provide a pipe joint anchor structure that facilitates the replacement of the anchoring end, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pipe-seam anchor structure for easy replacement of anchoring ends includes a hollow anchor body. A connector is provided at the lower end of the hollow anchor body. An insert block, which is tapered (smaller at the top and larger at the bottom), is located on the inner wall of the lower end of the connector. The insert block has a positioning groove on its side wall. A threaded post is provided at the lower end of the connector. A threaded sleeve, which is hollow tapered (larger at the top and smaller at the bottom), is located on the outer wall of the threaded post. Four sets of expansion joints are equidistantly arranged on the side wall of the threaded sleeve. A fixing nut is provided on the outer wall of the threaded sleeve. An anchoring head is provided at the lower end of the threaded sleeve.

[0007] Preferably, a sidewall slot is provided in the middle of the sidewall of the hollow anchor rod body, a pad is provided on the outer wall of the hollow anchor rod body, a limit nut is provided at the upper end of the pad, and a grout stop plug is provided at the lower end of the pad.

[0008] Preferably, the insert is welded and fixed to the lower inner wall of the hollow anchor rod body.

[0009] Preferably, the outer wall of the threaded column is provided with threads, the inner wall of the threaded sleeve is provided with threads, and the inner wall of the threaded sleeve is threadedly connected to the outer wall of the threaded column.

[0010] Preferably, the outer wall of the threaded sleeve is provided with threads, and the fixing nut is connected to the outer wall of the threaded sleeve through the provided threads.

[0011] Preferably, the threaded sleeve can deform through the provided deformation joint, and a connecting strip is provided between the positioning groove and the lower inner wall of the hollow anchor rod body, and the positioning groove and the connecting strip on the inner wall of the hollow anchor rod body are slidably connected.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the connector is initially fixed by engaging with the positioning groove on the lower inner wall of the hollow anchor rod body via a plug. The threaded sleeve is rotated to move up and down along the threaded column. By utilizing the deformation of the expansion joint, the anchoring end can be quickly disassembled or installed. When the anchoring end is worn or damaged, it is not necessary to replace the entire anchor rod body. Simply remove the fixing nut, take off the old anchoring end, install the new anchoring end, and tighten the fixing nut. The replacement process is simple and quick.

[0014] In this invention, the hollow conical structure of the threaded sleeve, which is larger at the top and smaller at the bottom, combined with the design of the expansion joint, allows the threaded sleeve to generate radial contraction force when the fixing nut is tightened, resulting in a better fixation effect for the anchoring end. At the same time, by changing different types of anchoring ends, the anchoring force and anchoring method can be flexibly adjusted, ensuring good anchoring effect even in complex geological environments such as soft rock and fractured rock, thereby enhancing the stability and reliability of engineering support. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the anchor head connection structure of this utility model;

[0017] Figure 3 This is a disassembly diagram of the anchor head connection structure of this utility model.

[0018] In the diagram: 1. Hollow anchor rod body; 2. Side wall pipe joint; 3. Pad; 4. Grout stop plug; 5. Limiting nut; 6. Anchor head; 7. Connector head; 8. Fixing nut; 9. Insert block; 10. Positioning groove; 11. Threaded column; 12. Threaded sleeve; 13. Expansion joint. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-3As shown, a pipe joint anchor structure for easy replacement of anchor ends includes a hollow anchor body 1. A connector 7 is provided at the lower end of the hollow anchor body 1 for connecting the end. An insert 9, which is tapered (smaller at the top, larger at the bottom) is provided on the inner wall of the lower end of the hollow anchor body 1 at the upper end of the connector 7. The insert 9 is welded and fixed to the lower end of the hollow anchor body 1. A positioning groove 10 is provided on the side wall of the insert 9 for fixing the insert 9 to the inner wall of the lower end of the hollow anchor body 1, preventing misalignment during positioning. A threaded post 11 is provided at the lower end of the connector 7. The outer wall of the threaded post 11 is threaded, and a threaded sleeve 12 is provided on the outer wall of the threaded post 11. The inner wall of the threaded sleeve 12 is threaded and threaded to the outer wall of the threaded post 11. Rotating the threaded sleeve 12 allows it to be threaded... The outer wall of the threaded post 11 can be moved up and down for installation or disassembly. The threaded sleeve 12 is a hollow cone shape that is larger at the top and smaller at the bottom. The cone shape facilitates the connection and installation of the threaded sleeve 12 and the threaded post 11. Four sets of deformation joints 13 are equidistantly arranged on the side wall of the threaded sleeve 12. The deformation joints 13 allow the threaded sleeve 12 to undergo slight deformation. A fixing nut 8 is provided on the outer wall of the threaded sleeve 12. The outer wall of the threaded sleeve 12 is also threaded. The fixing nut 8 is threadedly connected to the outer wall of the threaded sleeve 12. When the fixing nut 8 is rotated, it will also move up and down on the outer wall of the threaded sleeve 12. When the fixing nut 8 moves upward, it will apply a force towards the center to the threaded sleeve 12, so that the threaded sleeve 12 can be better fixed to the threaded post 11. An anchor head 6 is provided at the lower end of the threaded sleeve 12. The anchor head 6 is fixed at the lower end of the threaded sleeve 12.

[0021] like Figures 1-3 As shown, a side wall slit 2 is provided in the middle of the side wall of the hollow anchor rod body 1. The side wall slit 2 allows the hollow anchor rod body 1 to expand and deform after being filled. A pad 3 is provided on the outer wall of the hollow anchor rod body 1. A limit nut 5 is provided at the upper end of the pad 3, and a grout stop plug 4 is provided at the lower end of the pad 3.

[0022] It should be noted that this utility model is a pipe joint anchor structure that facilitates the replacement of anchoring ends. In use, a suitable anchoring head 6 is selected according to the engineering geological conditions. The positioning groove 10 on the side wall of the insert 9 at the upper end of the connector 7 is aligned with the butt strip on the inner wall of the lower end of the hollow anchor body 1. Then, the insert 9 is inserted, and the connector 7 is fixed to the hollow anchor body 1 by welding. Then, the fixing nut 8 is screwed onto the outer wall of the threaded sleeve 12, and the threaded sleeve 12 is screwed onto the threaded post 11. After the threaded sleeve 12 is rotated to a certain position on the outer wall of the threaded post 11, the fixing nut 8 is rotated upward, so that the fixing nut 8 and the threaded sleeve 12 move upward on the outer wall of the threaded sleeve 12, and at the same time, the threaded sleeve 12 is squeezed, so that the threaded sleeve 12 deforms through the four sets of deformation joints 13, making the connection between the threaded sleeve 12 and the threaded post 11 more secure. The hollow anchor body 1 is inserted into the pre-drilled anchor hole, and the anchor body is fixed by the pad 3 and the limiting nut 5, ensuring that the pad is tightly attached to the rock wall, and then it can be fixed.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tubular rock bolt construction with a replaceable anchoring tip, comprising a hollow rock bolt body (1), characterised in that: The lower end of the hollow anchor body (1) is provided with a connector (7). The upper end of the connector (7) is provided with an insert (9) in the inner wall of the lower end of the hollow anchor body (1). The insert (9) is a cone shape with a smaller upper part and a larger lower part. The side wall of the insert (9) is provided with a positioning groove (10). The lower end of the connector (7) is provided with a threaded column (11). The outer wall of the threaded column (11) is provided with a threaded sleeve (12). The threaded sleeve (12) is a hollow cone shape with a larger upper part and a smaller lower part. The side wall of the threaded sleeve (12) is provided with four sets of deformation joints (13) at equal intervals. The outer wall of the threaded sleeve (12) is provided with a fixing nut (8). The lower end of the threaded sleeve (12) is provided with an anchor head (6).

2. A tubular rock bolt construction with a conveniently replaceable anchoring tip as claimed in claim 1, characterized in that: The hollow anchor body (1) has a side wall pipe seam (2) in the middle of its side wall, and a pad (3) is provided on the outer wall of the hollow anchor body (1). A limit nut (5) is provided at the upper end of the pad (3), and a grout stop plug (4) is provided at the lower end of the pad (3).

3. A tubular rock bolt construction with a conveniently replaceable anchoring tip as claimed in claim 1, c h a r a c t e r i s e d in that: The insert (9) is welded and fixed to the lower inner wall of the hollow anchor rod body (1).

4. A tubular rock bolt construction with a conveniently replaceable anchoring shoe according to claim 1, characterized in that: The outer wall of the threaded column (11) is provided with threads, and the inner wall of the threaded sleeve (12) is provided with threads. The inner wall of the threaded sleeve (12) is threadedly connected to the outer wall of the threaded column (11).

5. A tubular rock bolt construction with a conveniently replaceable anchoring shoe according to claim 1, characterized in that: The outer wall of the threaded sleeve (12) is provided with threads, and the fixing nut (8) is threadedly connected to the outer wall of the threaded sleeve (12) through the provided threads.

6. A tubular rock bolt construction with a conveniently replaceable anchoring tip as claimed in claim 1, characterized in that: The threaded sleeve (12) can be deformed through the set deformation joint (13). A connecting strip is provided between the positioning groove (10) and the lower inner wall of the hollow anchor rod body (1). The positioning groove (10) and the connecting strip of the inner wall of the hollow anchor rod body (1) are slidably connected.

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