Anchor rod supporting structure of coal mine underground roadway

Abstract

The utility model relates to the technical field of coal mine underground roadway anchor rod supporting, in particular to a coal mine underground roadway anchor rod supporting structure which comprises an anchor rod body, a drill bit is fixedly welded to the end of the anchor rod body, and a through hole is formed in one end of the anchor rod body. The anchor rod body is drilled into a wall of an underground coal mine roadway through a drill bit, then the anchor rod body is sleeved with the conical sleeve and inserted into a drill hole, then the anchor rod body is sleeved with the tray, the tray is screwed and fixed through the first nut, the first gear ring is meshed with the second gear ring, the conical insertion rod of the tray is inserted into the wall, and the positioning effect is achieved; when the anchor rod body is screwed in, a non-return plate deforms and is tightly attached to the inner wall of a drill hole, the anchor rod body can be prevented from sliding out, and the anchor rod body can be prevented from sliding out due to the fact that a first gear ring and a second gear ring are meshed to achieve the anti-loosening effect. And a good fixing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor rod support for underground coal mine tunnels, in particular to an anchor rod support structure for underground coal mine tunnels. Background Art

[0002] Mine tunnels are excavated in different rocks along different directions, at different inclinations, with varying cross-sections and lengths, serving various underground spaces with varying scopes and uses. Mine tunnels are named and categorized based on their spatial dimensions, inclination, location, service area, and purpose. Anchor bolts are a fundamental component of tunnel support in modern coal mines, reinforcing the surrounding rock, allowing it to support itself.

[0003] During the installation of existing anchor rods, the tray is usually fixed by a locking nut. However, after long-term use, the locking nut may rotate due to the vibration of the surrounding rock of the mine tunnel, which may cause the locking nut to fall off and affect the installation stability of the anchor rod.

[0004] Therefore, an anchor support structure for underground coal mine tunnels is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides an anchor support structure for underground coal mine tunnels, which can solve the problem that when the existing anchor is installed, the tray is usually fixed by a locking nut, but after long-term use, the locking nut rotates due to the vibration of the surrounding rock of the mine tunnel, which in turn causes the locking nut to fall off, affecting the installation stability of the anchor.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: it includes an anchor rod body, a drill bit is welded and fixed at the end of the anchor rod body, a through hole is opened at one end of the anchor rod body, a grouting hole is opened on the outside of one end of the anchor rod body, the grouting hole is connected to the through hole, a mounting mechanism is provided on the outside of the anchor rod body, the mounting mechanism includes a conical sleeve, a tray, a conical insertion rod, a first gear ring, a first nut and a second gear ring, the outer side of the anchor rod body is sleeved with a conical sleeve, the outer side of one end of the anchor rod body is sleeved with a tray, a conical insertion rod is integrally formed on one side of the tray, a first gear ring is integrally formed on the outer side of the tray, a first nut is threadedly connected to the outer side of one end of the anchor rod body, and a second gear ring is integrally formed on one side of the first nut.

[0007] Preferably, the teeth of the first gear ring and the second gear ring are both arranged in a wedge structure, and the first gear ring and the second gear ring are engaged with each other.

[0008] Preferably, a positioning mechanism is provided on the outer side of the anchor rod body, and the positioning mechanism includes a collar and a check plate. The collar is welded on the outer side of the anchor rod body, and the check plate is integrally formed on the outer side of the collar.

[0009] Preferably, the check plates are evenly distributed on the outside of the collar, and the check plates are tilted.

[0010] Preferably, a fixing mechanism is provided at one end of the anchor rod body, and the fixing mechanism includes a connecting sleeve, a plug, a buckle and a slot. A connecting sleeve is integrally formed on the other side of the first nut, and the outer side of the connecting sleeve is threadedly connected to the plug. A buckle is integrally formed at one end of the inner cavity of the plug. A slot is opened on the inner side of one end of the anchor rod body, and the buckle is clamped on the inner side of the slot.

[0011] Preferably, a series mechanism is provided on the outer side of the pallet, and the series mechanism includes a threaded column, a connecting plate, a second nut, a positioning column and a positioning hole. A threaded column is welded and fixed on the outer side of the pallet, a connecting plate is sleeved on the outer side of the threaded column, and the outer side of the threaded column is threadedly connected to the second nut. Positioning columns are integrally formed at both ends of the pallet, and a positioning hole is opened on the outer side of the pallet.

[0012] Preferably, the positioning post is slidably inserted into the inner side of the positioning hole, and the outer wall of the positioning post fits with the inner wall of the positioning hole.

[0013] Compared with the prior art, the present invention provides an anchor support structure for underground coal mine tunnels, which has the following beneficial effects:

[0014] During use, the anchor rod body is drilled into the wall of the underground tunnel of the coal mine through the drill bit, and then the conical sleeve is put on the anchor rod body and inserted into the drill hole, and then the tray is put on the anchor rod body, and the tray is tightened and fixed with the first nut. The first tooth ring and the second tooth ring are engaged with each other, so that the conical plug rod of the tray is inserted into the wall, achieving the positioning effect and preventing the conical plug rod and the anchor rod body from shifting. The engagement of the first tooth ring and the second tooth ring can play an anti-loosening effect, and then grouting reinforcement is carried out through the through hole and the grouting hole to complete the fixation of the anchor rod body. When the anchor rod body is screwed in, the check plate is deformed and fits tightly against the inner wall of the drill hole, which can prevent the anchor rod body from slipping out and achieve a good fixing effect.

[0015] After grouting, the plug is threadedly connected to the connecting sleeve so that the buckle is connected to the inside of the slot through deformation and rebound. This can prevent the plug connection from loosening, and the plug can prevent the mortar from flowing out of the through hole when it is not solidified, thereby ensuring better reinforcement.

[0016] After multiple anchor rod bodies are installed and fixed, the connecting plates are connected to the two threaded columns respectively and fixed with second nuts. In this way, the positions of two adjacent anchor rod bodies are positioned by the connecting plates, which better prevents the anchor rod bodies from shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the tapered sleeve of the utility model;

[0019] Figure 3 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the serial mechanism structure of the utility model.

[0021] In the figure: 1. Anchor body; 2. Drill bit; 3. Grouting hole; 4. Ring; 5. Check plate; 6. Conical sleeve; 7. Tray; 8. Conical insert; 9. First gear ring; 10. First nut; 11. Second gear ring; 12. Connecting sleeve; 13. Plug; 14. Buckle; 15. Slot; 16. Threaded column; 17. Connecting plate; 18. Second nut; 19. Positioning column; 20. Positioning hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 4 In this embodiment, an anchor support structure for an underground coal mine tunnel includes an anchor body 1, a drill bit 2 is welded and fixed to the end of the anchor body 1, a through hole is opened at one end of the anchor body 1, a grouting hole 3 is opened on the outside of one end of the anchor body 1, and the grouting hole 3 is connected to the through hole, and an installation mechanism is provided on the outside of the anchor body 1, the installation mechanism includes a conical sleeve 6, a tray 7, a conical insertion rod 8, a first gear ring 9, a first nut 10 and a second gear ring 11, the outer side of the anchor body 1 is sleeved with a conical sleeve 6, the outer side of one end of the anchor body 1 is sleeved with a tray 7, a conical insertion rod 8 is integrally formed on one side of the tray 7, a first gear ring 9 is integrally formed on the outer side of the tray 7, a first nut 10 is threadedly connected to the outer side of one end of the anchor body 1, and a second gear ring 11 is integrally formed on one side of the first nut 10.

[0024] During use, the anchor rod body 1 is drilled into the wall of the underground tunnel of the coal mine through the drill bit 2, and then the conical sleeve 6 is put on the anchor rod body 1 and inserted into the drill hole, and then the tray 7 is put on the anchor rod body 1, and the first nut 10 is used to tighten and fix the tray 7. The first tooth ring 9 and the second tooth ring 11 are engaged with each other, so that the conical insertion rod 8 of the tray 7 is inserted into the wall to achieve the positioning effect and prevent the conical insertion rod 8 and the anchor rod body 1 from shifting. The engagement of the first tooth ring 9 and the second tooth ring 11 can play an anti-loosening effect, and then grouting reinforcement is carried out through the through hole and the grouting hole 3 to complete the fixation of the anchor rod body 1. When the anchor rod body 1 is screwed in, the check plate 5 is deformed and fits tightly against the inner wall of the drill hole, which can prevent the anchor rod body 1 from slipping out and achieve a good fixing effect.

[0025] Furthermore, the teeth of the first gear ring 9 and the second gear ring 11 are both wedge-shaped structures, and the first gear ring 9 and the second gear ring 11 are engaged with each other.

[0026] Furthermore, a positioning mechanism is provided on the outer side of the anchor rod body 1 , and the positioning mechanism includes a collar 4 and a check plate 5 . The collar 4 is welded to the outer side of the anchor rod body 1 , and the check plate 5 is integrally formed on the outer side of the collar 4 .

[0027] Furthermore, the check plates 5 are evenly distributed on the outside of the collar 4 , and the check plates 5 are tilted.

[0028] For ease of use, a fixing mechanism is provided at one end of the anchor rod body 1, which includes a connecting sleeve 12, a plug 13, a buckle 14 and a slot 15. A connecting sleeve 12 is integrally formed on the other side of the first nut 10, and the outer side of the connecting sleeve 12 is threadedly connected to the plug 13, and a buckle 14 is integrally formed at one end of the inner cavity of the plug 13. A slot 15 is provided on the inner side of one end of the anchor rod body 1, and the buckle 14 is clamped on the inner side of the slot 15. After grouting, the plug 13 is threadedly connected to the connecting sleeve 12, so that the buckle 14 is clamped on the inner side of the slot 15 through deformation rebound, which can prevent the plug 13 from loosening, and the plug 13 can prevent the mortar from flowing out of the through hole when it is not solidified, thereby ensuring better reinforcement.

[0029] In order to facilitate series connection, a series connection mechanism is provided on the outside of the tray 7, which includes a threaded column 16, a connecting plate 17, a second nut 18, a positioning column 19 and a positioning hole 20. A threaded column 16 is welded and fixed on the outside of the tray 7, and a connecting plate 17 is sleeved on the outside of the threaded column 16. The outside of the threaded column 16 is threadedly connected to the second nut 18. Positioning columns 19 are integrally formed at both ends of the tray 7, and a positioning hole 20 is opened on the outside of the tray 7. After multiple anchor rod bodies 1 are installed and fixed, the connecting plate 17 is respectively connected to the two threaded columns 16 and fixed with the second nut 18. In this way, the positions of the two adjacent anchor rod bodies 1 are positioned by the connecting plate 17 to better prevent the anchor rod body 1 from shifting.

[0030] Furthermore, the positioning post 19 is slidably inserted into the inner side of the positioning hole 20 , and the outer wall of the positioning post 19 fits in contact with the inner wall of the positioning hole 20 .

[0031] The working principle of the above embodiment is as follows: when in use, the anchor body 1 is drilled into the wall of the underground tunnel of the coal mine through the drill bit 2, and then the conical sleeve 6 is put on the anchor body 1 and inserted into the drill hole, and then the tray 7 is put on the anchor body 1, and the tray 7 is tightened and fixed with the first nut 10, and the first gear ring 9 is engaged with the second gear ring 11, so that the conical plug rod 8 of the tray 7 is inserted into the wall to achieve the positioning effect, and prevent the conical plug rod 8 and the anchor body 1 from shifting, and the engagement of the first gear ring 9 and the second gear ring 11 can play a role in preventing loosening, and then grouting reinforcement is carried out through the through hole and the grouting hole 3, thereby completing the fixation of the anchor body 1. When the anchor body 1 is screwed in The check plate 5 is deformed and fits tightly against the inner wall of the drilled hole, which can prevent the anchor body 1 from slipping out and achieve a good fixing effect. After grouting, the plug 13 is threadedly connected to the connecting sleeve 12, so that the buckle 14 is clamped on the inner side of the card groove 15 by deformation rebound. This can prevent the plug 13 from being loosened, and the plug 13 can prevent the mortar from flowing out of the through hole when it is not solidified, thereby ensuring better reinforcement. After multiple anchor bodies 1 are installed and fixed, the connecting plate 17 is respectively connected to the two threaded columns 16 and fixed with the second nut 18. In this way, the positions of the two adjacent anchor bodies 1 are positioned by the connecting plate 17, which better prevents the anchor body 1 from deflecting.

[0032] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, in this embodiment, their specific structural composition and working principle will not be described in detail.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anchor support structure for an underground coal mine tunnel, characterized by: The invention comprises an anchor rod body (1), wherein a drill bit (2) is welded and fixed to the end of the anchor rod body (1), a through hole is opened at one end of the anchor rod body (1), a grouting hole (3) is opened on the outside of one end of the anchor rod body (1), and the grouting hole (3) is connected to the through hole, and a mounting mechanism is provided on the outside of the anchor rod body (1), and the mounting mechanism comprises a conical sleeve (6), a tray (7), a conical insert rod (8), a first gear ring (9), a first nut (10) and a second gear ring (11), the outer side of the anchor rod body (1) is sleeved with a conical sleeve (6), the outer side of one end of the anchor rod body (1) is sleeved with a tray (7), a conical insert rod (8) is integrally formed on one side of the tray (7), a first gear ring (9) is integrally formed on the outer side of the tray (7), a first nut (10) is threadedly connected to the outer side of one end of the anchor rod body (1), and a second gear ring (11) is integrally formed on one side of the first nut (10).

2. The anchor support structure for an underground coal mine tunnel according to claim 1, characterized in that: The teeth of the first gear ring (9) and the second gear ring (11) are both arranged in a wedge structure, and the first gear ring (9) and the second gear ring (11) are engaged with each other.

3. The anchor support structure for an underground coal mine tunnel according to claim 1, characterized in that: A positioning mechanism is provided on the outside of the anchor rod body (1), the positioning mechanism comprising a collar (4) and a check plate (5); the collar (4) is welded to the outside of the anchor rod body (1), and the check plate (5) is integrally formed on the outside of the collar (4).

4. The anchor support structure for an underground coal mine tunnel according to claim 3, characterized in that: The non-return plates (5) are distributed equidistantly on the outside of the collar (4), and the non-return plates (5) are arranged at an angle.

5. The anchor support structure for an underground coal mine tunnel according to claim 1, characterized in that: One end of the anchor rod body (1) is provided with a fixing mechanism, which includes a connecting sleeve (12), a plug (13), a buckle (14) and a slot (15); the other side of the first nut (10) is integrally formed with a connecting sleeve (12); the outer side of the connecting sleeve (12) is threadedly connected to the plug (13); one end of the inner cavity of the plug (13) is integrally formed with a buckle (14); the inner side of one end of the anchor rod body (1) is provided with a slot (15), and the buckle (14) is snap-connected to the inner side of the slot (15).

6. The anchor support structure for an underground coal mine tunnel according to claim 1, characterized in that: A serial mechanism is provided on the outside of the tray (7), and the serial mechanism includes a threaded column (16), a connecting plate (17), a second nut (18), a positioning column (19) and a positioning hole (20). The threaded column (16) is welded and fixed on the outside of the tray (7), the connecting plate (17) is sleeved on the outside of the threaded column (16), and the second nut (18) is threadedly connected to the outside of the threaded column (16). Positioning columns (19) are integrally formed at both ends of the tray (7), and a positioning hole (20) is opened on the outside of the tray (7).

7. The anchor support structure for an underground coal mine tunnel according to claim 6, characterized in that: The positioning column (19) is slidably inserted into the inner side of the positioning hole (20), and the outer wall of the positioning column (19) fits the inner wall of the positioning hole (20).

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