Novel anti-shearing force-measuring anchor rod

Abstract

The utility model discloses a novel anti-shearing force-measuring anchor rod, and relates to the technical field of force-measuring anchor rods. The composite lock comprises a steel strand, the outer surface of the steel strand is provided with a composite lock, the composite lock comprises a lock cylinder, the inner side of the lock cylinder is provided with a limiting groove, the limiting groove is in sliding fit with the steel strand, the lower end of the lock cylinder is fixedly provided with a conical block, the inner wall of the lower end of the conical block is provided with a meshing groove, and the meshing groove is in sliding fit with the steel strand. A conical block is arranged on the lower portion of the lock cylinder, an extrusion ring is arranged on the outer side of the conical block in a sliding mode, a conical sliding groove is formed in the inner side of the extrusion ring, the conical sliding groove is in sliding fit with the conical block, and a lock sleeve is arranged on the outer surface of the lock cylinder in a sleeved mode. Therefore, the shear-resistant force-measuring anchor rod can effectively prevent a coal and rock mass structural surface from being tensioned and damaged, and external threads on the upper portion of the lock cylinder can be matched with the threaded groove in the lock sleeve, so that the shear-resistant force-measuring anchor rod is not prone to being broken at the crack position.

Description

Technical Field

[0001] The utility model relates to the technical field of force-measuring anchor rods, in particular to a novel shear-resistant force-measuring anchor rod. Background Art

[0002] In actual mining production, the phenomenon of anchor bolt shearing is quite serious and cannot meet the actual support needs of mining production. In order to reduce the impact of poor anchor bolt support effect on mine safety production, research and development of coal mine anchor bolt products are carried out, and the research and development, production and testing of ultra-high strength shear anchor bolts are proposed.

[0003] However, the prior art still has the following problems:

[0004] First, when the existing shear force measuring anchor rods are used to support mines, most of the shear force measuring anchor rods cannot effectively prevent the tension damage of the coal rock structure surface, resulting in the tension of the coal rock structure surface easily causing damage to the shear force measuring anchor rods.

[0005] Secondly, when the shear force measuring anchor rods of the prior art are used to support the mine, most of the shear force measuring anchor rods are prone to breakage at the crack position, resulting in poor support effect of the shear force measuring anchor rods, which makes it easy for danger to occur inside the mine.

[0006] In response to the above problems, the inventors proposed a new type of shear force measuring anchor rod to solve the above problems. Utility Model Content

[0007] In order to solve the problems that shear force measuring anchor rods cannot effectively prevent the tensile damage of coal rock structure surface and shear force measuring anchor rods are prone to breakage at crack positions; the purpose of this utility model is to provide a new type of shear force measuring anchor rod.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions: a new type of shear-resistant force-measuring anchor rod, comprising a steel strand, the outer surface of the steel strand is provided with a composite lock, the composite lock comprises a lock core, a limiting groove is provided on the inner side of the lock core, the limiting groove slides with the steel strand, a conical block is fixedly provided at the lower end of the lock core, a bite groove is provided on the inner wall of the lower end of the conical block, an extrusion ring is provided on the outer side of the conical block for sliding, a conical slide is provided on the inner side of the extrusion ring, the conical slide slide slides with the conical block, a lock sleeve is provided on the outer surface of the lock core, and a pad is fixedly provided on the upper end of the lock sleeve The outer surface of the steel strand is provided with a plurality of clamping rings used in conjunction with each other, and one side of the opposite surfaces of the plurality of clamping rings is provided with a clamping groove used in conjunction with the steel strand, the outer surfaces of the plurality of clamping rings are provided with a clamping screw groove, and the inner surfaces of every two of the clamping screw grooves are jointly threaded with a clamping screw, and the lower ends of the plurality of clamping rings are fixed with an oblique thread plate, and the outer surfaces of the plurality of oblique thread plates are jointly sleeved with a clamping nut, the inner surface of the clamping nut is provided with an oblique thread groove used in conjunction with the plurality of oblique thread plates, and the lower end of the clamping nut is provided with a sliding groove used in conjunction with the steel strand.

[0009] Preferably, an external thread is fixedly provided on the outer surface of the lock core, a thread groove is provided on the inner surface of the lock sleeve, and the inner surface of the thread groove is threadably fitted with the outer surface of the external thread.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The utility model can effectively engage with the steel strand by cooperating with the tapered block, the lock core, and the extrusion ring at the bottom. The inner wall of the tapered block has a sharp engaging groove, which has a large friction coefficient with the steel strand and is not easy to slide relative to it. When the steel strand is pulled, the static friction clamping force generated between the tapered block, the extrusion ring, and the engaging groove fixes the end of the steel strand, thereby realizing shear-resistant force-measuring anchor rods that can effectively prevent tension damage to the coal rock structure surface.

[0012] 2. The utility model uses the external thread on the upper part of the lock core to cooperate with the thread groove in the lock sleeve. When the lock sleeve is rotated, the length of the composite lock can be adjusted, thereby adjusting the length and tension of the steel strand. The lower part of the lock sleeve is hexagonal, which is convenient for rotation using mechanical tools to complete the tightening and loosening of the composite lock, thereby achieving the shear force measuring anchor rod that is not easy to break at the crack position. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the connection between the structure of the utility model and the rock mass.

[0016] Figure 3 This is a cross-sectional schematic diagram of the composite lock of the present utility model.

[0017] Figure 4 It is a partial structural cross-sectional diagram of the utility model.

[0018] In the figure: 1. Steel strand; 2. Composite lock; 4. Drill hole; 5. Spacer; 6. Conical slide; 7. Extrusion ring; 8. Lock core; 9. Sliding groove; 10. Lock sleeve; 11. Sliding slot; 12. Threaded groove; 13. External thread; 14. Limiting groove; 15. Conical block; 16. Engaging groove; 17. Limiting slot; 18. Anti-slip groove; 20. Reinforcement ring; 21. Snap ring; 22. Snap screw groove; 23. Snap screw; 24. Snap groove; 25. Oblique thread plate; 26. Slide; 27. Snap nut; 28. Oblique thread groove. DETAILED DESCRIPTION

[0019] 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.

[0020] Example 1: Figure 1-4As shown, the utility model provides a new type of shear force measuring anchor rod, including a steel strand 1, the outer surface of the steel strand 1 is provided with a composite lock 2, the composite lock 2 includes a lock core 8, the inner side of the lock core 8 is provided with a limit groove 14, the limit groove 14 and the steel strand 1 are slidably matched, the lower end of the lock core 8 is fixed with a tapered block 15, the lower end inner wall of the tapered block 15 is provided with a bite groove 16, the outer side of the tapered block 15 is slidably provided with an extrusion ring 7, the inner side of the extrusion ring 7 is provided with a tapered slide 6, the tapered slide 6 and the tapered block 15 are slidably matched, the outer surface of the lock core 8 A locking sleeve 10 is provided, and a pad 5 is fixed on the upper end of the locking sleeve 10. When the shear force measuring anchor rod needs to be limited and supported, the tapered block 15 cooperates with the lock core 8 and the extrusion ring 7 at the bottom to effectively engage with the steel strand 1. The inner wall of the tapered block 15 has a sharp engaging groove 16, which has a large friction coefficient with the steel strand 1 and is not easy to slide relative to it. When the steel strand 1 is pulled, the static friction clamping force generated between the tapered block 15 and the extrusion ring 7 and the engaging groove 16 fixes the end of the steel strand 1, so that the shear force measuring anchor rod can effectively prevent the tension damage of the coal rock structure surface.

[0021] A borehole 4 is formed on the outer surface of the steel strand 1 , and the inner surface of the borehole 4 is in contact with the outer surface of the steel strand 1 .

[0022] By adopting the above technical solution, the steel strand 1 can pass through the drill hole 4 and be limited on the inner surface of the drill hole 4.

[0023] A sliding groove 9 is formed at the upper end of the lock core 8 , and the inner surface of the sliding groove 9 is in sliding contact with the outer surface of the steel strand 1 .

[0024] By adopting the above technical solution, the steel strand 1 can slide on the inner surface of the sliding groove 9 through the sliding groove 9.

[0025] A sliding slot 11 is formed at the upper end of the locking sleeve 10 , and the inner surface of the sliding slot 11 is slidably fitted with the outer surface of the steel strand 1 .

[0026] By adopting the above technical solution, the steel strand 1 can slide on the inner surface of the sliding slot 11 through the sliding slot 11 .

[0027] A limit slot 17 is provided at the upper end of the spacer block 5 , and the inner surface of the limit slot 17 is slidably fitted with the outer surface of the steel strand 1 .

[0028] By adopting the above technical solution, the steel strand 1 can pass through the limiting slot 17 and slide on the inner surface of the limiting slot 17 .

[0029] The outer surface of the locking sleeve 10 is provided with anti-slip grooves 18 , and a reinforcing ring 20 is fixedly provided inside the extrusion ring 7 .

[0030] By adopting the above technical solution, the anti-slip grooves 18 can improve the friction force of the locking sleeve 10 when the locking sleeve 10 rotates, and the reinforcing ring 20 can effectively improve the strength of the extrusion ring 7 to avoid damage during the clamping process.

[0031] The outer surface of the steel strand 1 is provided with a plurality of locking rings 21 for use with each other, and a locking groove 24 for use with the steel strand 1 is provided on one side of the opposite surfaces of the plurality of locking rings 21, and a locking screw groove 22 is provided on the outer surfaces of the plurality of locking rings 21, and a locking screw 23 is commonly threadedly inserted into the inner surfaces of every two locking screw grooves 22, and the lower ends of the plurality of locking rings 21 are fixed with an oblique thread plate 25, and the outer surfaces of the plurality of oblique thread plates 25 are commonly sleeved with a locking nut 27, and the inner surface of the locking nut 27 is provided with an oblique thread groove 28 for use with the plurality of oblique thread plates 25, and the lower end of the locking nut 27 is provided with a sliding groove 26 for use with the steel strand 1.

[0032] By adopting the above technical solution, multiple snap rings 21 are placed on the outer surface of the steel strand 1 through the snap groove 24, and the snap rings 21 can be snapped and fixed on the outer surface of the steel strand 1 through the snap screw 23 cooperating with the snap groove 22, and then the snap nut 27 can slide on the outer surface of the steel strand 1 through the sliding groove 26, and rotate through the oblique thread groove 28 and the oblique thread plate 25, thereby further improving the stability of the anchor rod.

[0033] Example 2: Figure 3 As shown, the outer surface of the lock core 8 is fixed with an external thread 13, and the inner surface of the lock sleeve 10 is provided with a thread groove 12, and the inner surface of the thread groove 12 is threadedly fitted with the outer surface of the external thread 13. When the shear force measuring anchor rod is supporting, the external thread 13 on the upper part of the lock core 8 can cooperate with the thread groove 12 in the lock sleeve 10. When the lock sleeve 10 is rotated, the length of the composite lock 2 can be adjusted, thereby adjusting the length and tension of the steel strand 1. The lower part of the lock sleeve 10 is hexagonal, which is convenient for rotation using mechanical tools to complete the tightening and loosening of the composite lock 2, so as to achieve the purpose of preventing the shear force measuring anchor rod from breaking at the crack position.

[0034] By adopting the above technical solution, it is achieved that the shear force measuring anchor rod is not likely to break at the crack position.

[0035] Working principle: When the shear force anchor needs to be limited and supported, the tapered block 15 cooperates with the lock core 8 and the lower extrusion ring 7 to effectively engage with the steel strand 1. The inner wall of the tapered block 15 has a sharp engaging groove 16, which has a large friction coefficient with the steel strand 1 and is not easy to slide relative to it. When the steel strand 1 is pulled, the static friction clamping force generated between the tapered block 15 and the extrusion ring 7 and the engaging groove 16 fixes the end of the steel strand 1, so that the shear force anchor can effectively prevent coal from sliding. For the purpose of tension failure of rock structure surface, when the shear force measuring anchor rod is supporting, the external thread 13 on the upper part of the lock core 8 can cooperate with the thread groove 12 in the lock sleeve 10. When the lock sleeve 10 is rotated, the length of the composite lock 2 can be adjusted, thereby adjusting the length and tension of the steel strand 1. The lower part of the lock sleeve 10 is hexagonal, which is convenient for rotation using mechanical tools to complete the tightening and loosening of the composite lock 2, so as to achieve the purpose of preventing the shear force measuring anchor rod from breaking easily at the crack position.

[0036] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A novel shear-resistant force-measuring anchor rod, comprising a steel strand (1), characterized in that: The outer surface of the steel strand (1) is provided with a composite lock (2); The composite lock (2) includes a lock core (8), a limiting groove (14) is provided on the inner side of the lock core (8), and the limiting groove (14) is slidably matched with the steel strand (1). A conical block (15) is fixedly provided at the lower end of the lock core (8), and a bite groove (16) is provided on the inner wall of the lower end of the conical block (15). An extrusion ring (7) is slidably provided on the outer side of the conical block (15), and a conical slide groove (6) is provided on the inner side of the extrusion ring (7), and the conical slide groove (6) is slidably matched with the conical block (15). The outer surface of the lock core (8) is provided with a lock sleeve (10), and a pad (5) is fixedly provided on the upper end of the lock sleeve (10).

2. A novel shear force-measuring anchor rod according to claim 1, characterized in that: The outer surface of the lock core (8) is fixedly provided with an external thread (13), the inner surface of the lock sleeve (10) is provided with a thread groove (12), and the inner surface of the thread groove (12) is threadedly fitted with the outer surface of the external thread (13).

3. A novel shear force-measuring anchor rod according to claim 1, characterized in that: The outer surface of the steel strand (1) is provided with a drilling hole (4), and the inner surface of the drilling hole (4) is in contact with the outer surface of the steel strand (1).

4. A novel shear-resistant force-measuring anchor rod according to claim 1, characterized in that: A sliding groove (9) is provided at the upper end of the lock core (8), and the inner surface of the sliding groove (9) is in sliding contact with the outer surface of the steel strand (1).

5. A novel shear-resistant force-measuring anchor rod according to claim 1, characterized in that: A sliding slot (11) is provided at the upper end of the locking sleeve (10), and the inner surface of the sliding slot (11) is slidably fitted with the outer surface of the steel strand (1).

6. A novel shear-resistant force-measuring anchor rod according to claim 1, characterized in that: A limit slot (17) is provided at the upper end of the cushion block (5), and the inner surface of the limit slot (17) is slidably fitted with the outer surface of the steel strand (1).

7. A novel shear-resistant force-measuring anchor rod according to claim 1, characterized in that: The outer surface of the locking sleeve (10) is provided with anti-slip grooves (18), and a reinforcing ring (20) is fixedly provided inside the extrusion ring (7).

8. A novel shear-resistant force-measuring anchor rod according to claim 1, characterized in that: The outer surface of the steel strand (1) is provided with a plurality of engaging rings (21) for use in conjunction with each other, and one side of the opposite surface of the plurality of engaging rings (21) is provided with an engaging groove (24) for use in conjunction with the steel strand (1), and the outer surfaces of the plurality of engaging rings (21) are provided with an engaging screw groove (22), and the inner surfaces of every two engaging screw grooves (22) are commonly threadedly inserted with an engaging screw rod (23), and the lower ends of the plurality of engaging rings (21) are fixed with an oblique thread plate (25), and the outer surfaces of the plurality of oblique thread plates (25) are commonly sleeved with an engaging nut (27), and the inner surface of the engaging nut (27) is provided with an oblique thread groove (28) for use in conjunction with the plurality of oblique thread plates (25), and the lower end of the engaging nut (27) is provided with a sliding groove (26) for use in conjunction with the steel strand (1).

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