Combined anchor rod structure

Abstract

The utility model discloses a combined anchor rod structure, which belongs to the technical field of tunnels and comprises an anchor head, a hollow connecting rod and a plurality of hollow screws positioned between the anchor head and the hollow connecting rod, the anchor head and the hollow screws, two adjacent hollow screws and the hollow screws and the hollow connecting rod are all movably arranged, and the hollow connecting rod and the hollow screws are movably arranged. A spine end is integrally formed at one end, far away from the hollow screw rod, of the anchor head, and a grouting hole is formed in the anchor head; the multiple hollow screws are arranged to be used in cooperation, the adjacent hollow screws, the hollow screws and the anchor head and the hollow screws and the hollow connecting rod are assembled through the assembling lantern rings and the assembling clamping balls, the whole anchor rod is designed in a split mode, the length can be freely assembled according to the depth of an anchor rod hole, the assembling structure is simple, operation is convenient, and practicability is high. Fixed anchor rods with different specifications and lengths do not need to be arranged, the cost input is effectively reduced, and the use limitation of the fixed-length anchor rods is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnels, and in particular relates to a combined anchor rod structure. Background Art

[0002] With the acceleration of tunnel construction, safety is the top priority in the process of tunnel construction. Anchor rods are used for support and protection during mining. Anchor rods are the most basic component of contemporary tunnel support. They reinforce the surrounding rock of the tunnel so that the surrounding rock supports itself. Anchor rods are not only used in tunnels, but also in engineering technology to reinforce the main body of slopes, foundation pits, and dam bodies. As a tensile member deep in the stratum, the anchor rod is connected to the engineering structure at one end and deep in the stratum at the other end. The whole anchor rod is divided into a free section and an anchoring section. The free section refers to the area where the tension at the anchor rod head is transmitted to the anchor body. Its function is to apply prestress to the anchor rod.

[0003] The existing hollow screws of anchor rods are all integrally formed, and the overall length is fixed in design. There are certain limitations when using them for anchor rod holes of different depths. Anchor rod holes of different depths need to be equipped with anchor rods of different lengths, which increases the cost investment of anchor rods of various specifications and lengths. In addition, when the anchor rod is inserted into the anchor rod hole, there is a lack of a supporting mechanism, which easily leads to the problem of the anchor rod and the anchor rod hole being out of center. The out of center will affect the stability of the subsequent support effect of the anchor rod. Utility Model Content

[0004] The purpose of the utility model is to provide a combined anchor rod structure to solve the problem proposed in the above-mentioned background technology that the existing anchor rod hollow screws are all integrally formed, the overall length is fixed in design, and there are certain limitations when using them for anchor rod holes of different depths. Anchor rod holes of different depths need to be equipped with anchor rods of different lengths, which increases the cost investment of anchor rods of various specifications and lengths. In addition, when the anchor rod is inserted into the anchor rod hole, there is a lack of a supporting mechanism, which easily leads to the problem of the anchor rod and the anchor rod hole being non-concentric, and the non-concentricity will affect the stability of the subsequent support effect of the anchor rod.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined anchor rod structure, comprising an anchor head, a hollow connecting rod and a plurality of hollow screws located between the anchor head and the hollow connecting rod, wherein the anchor head and the hollow screw, between two adjacent hollow screws and between the hollow screw and the hollow connecting rod are all movably arranged, and a spiked end is integrally formed at one end of the anchor head away from the hollow screw, and a grouting hole is provided on the anchor head, and a grouting plug is threadedly installed on the outer surface of one of the hollow screws, a pad is fixedly installed on the side of the grouting plug, a connecting flange is fixedly installed on the end of the hollow connecting rod, and a plurality of sliding cylinders are fixedly installed on the outer surface of the grouting plug, a sliding rod is slidably installed in the sliding cylinder, and the sliding rod slidably extends out of the sliding cylinder and is fixedly installed with a rolling ball.

[0006] By adopting the above scheme, multiple hollow screws are set for use in combination, and assembly rings and assembly balls are used between adjacent hollow screws, between hollow screws and anchor heads, and between hollow screws and hollow connecting rods to achieve assembly. The overall anchor rod is designed in a split style, and the length can be freely assembled according to the depth of the anchor rod hole. The assembly structure is simple and the operation is convenient. There is no need to equip fixed anchor rods of different specifications and lengths, which effectively reduces the cost investment and the limitation of the use of fixed-length anchor rods. An inner tightening plate is set for use in combination with a barbed plate, and a sliding cylinder, a sliding rod and a rolling ball are used in combination to support the anchor rod, so that the anchor rod can maintain good stability after being inserted into the anchor rod hole, and is always arranged coaxially with the anchor rod hole to ensure subsequent support and protection effects.

[0007] As a preferred embodiment, an elastic inner tightening plate is fixedly mounted on the outer surface of the anchor head, and a barbed plate is fixedly mounted on the surface of the inner tightening plate.

[0008] By adopting the above scheme, the inner tightening plate is used in conjunction with the barb plate, so that the anchor head inserted into the anchor rod hole can be effectively supported and protected to avoid the phenomenon of backward sliding.

[0009] As a preferred embodiment, one end of the anchor head and one end of the hollow screw are fixedly installed with an assembly ring, the outer surface of the assembly ring is provided with a plurality of assembly clamping balls, the inner wall of the other end of the hollow screw and the inner wall of one end of the hollow connecting rod are provided with a plurality of assembly clamping grooves, and the assembly clamping balls and assembly clamping grooves are used in combination.

[0010] By adopting the above scheme, the assembly collar is used in conjunction with the assembly ball to achieve effective connection between adjacent hollow screws, between the hollow screw and the anchor head, and between the hollow screw and the hollow connecting rod. The connection structure is simple and the operation is convenient.

[0011] As a preferred implementation, a mounting groove is provided on a side surface of the pad, and a sealing ring is embedded in the mounting groove.

[0012] By adopting the above solution, the installation groove is used in conjunction with the sealing ring to effectively seal the plane where the pad and the anchor hole are located.

[0013] As a preferred implementation, a spring is fixedly mounted on the inner wall of the slide cylinder, and the spring is fixedly connected to the slide rod.

[0014] By adopting the above solution, the elasticity of the spring can be used to ensure that the slide bar is always subjected to an outward force, and the matching rolling ball is always pressed against the inner wall of the anchor rod hole.

[0015] As a preferred embodiment, a plurality of limit sliding blocks are fixedly mounted on the outer surface of the slide rod, a limit sliding groove is provided on the inner wall of the slide cylinder, and the limit sliding block is slidably mounted on the inner wall of the limit sliding groove.

[0016] By adopting the above solution, the limiting sliding block slides in the limiting sliding groove, which can ensure the stable sliding of the sliding rod and prevent the sliding rod from detaching from the sliding cylinder when sliding.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The combined anchor structure is used by arranging a plurality of hollow screws for cooperation. Adjacent hollow screws, hollow screws and anchor heads, and hollow screws and hollow connecting rods are assembled by assembly collars and assembly clamping balls. The overall anchor is split-type and can be freely assembled in length according to the depth of the anchor hole. The assembly structure is simple and easy to operate. There is no need to equip fixed anchors of different specifications and lengths, which effectively reduces the cost investment and the use limitations of fixed anchors of length.

[0019] The combined anchor structure can support the anchor by setting an inner tightening plate in conjunction with a barbed plate, and using a slide tube, a slide rod and a rolling ball in conjunction with each other, so that the anchor can maintain good stability after being inserted into the anchor hole, and is always arranged coaxially with the anchor hole, thereby ensuring subsequent support and protection effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the anchor head of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the hollow screw of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the pad of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the slide section of the utility model.

[0025] In the figure: 1. hollow screw; 2. anchor head; 3. hollow connecting rod; 4. connecting flange; 5. spiked end; 6. grouting hole; 7. inner tightening plate; 8. pad; 9. grouting plug; 10. assembly ring; 11. assembly ball; 12. barbed plate; 13. sealing ring; 14. slide tube; 15. slide rod; 16. rolling ball; 17. spring; 18. limit slider. DETAILED DESCRIPTION

[0026] See also Figure 1-5The utility model provides a combined anchor rod structure, including an anchor head 2, a hollow connecting rod 3 and a plurality of hollow screws 1 located between the anchor head 2 and the hollow connecting rod 3. By setting a plurality of hollow screws 1, an appropriate number of hollow screws 1 can be selected according to the actual use length, so as to achieve the effect of adaptively adjusting the length.

[0027] The anchor head 2 and the hollow screw 1, between two adjacent hollow screws 1, and between the hollow screw 1 and the hollow connecting rod 3 are all movably arranged. The end of the anchor head 2 away from the hollow screw 1 is integrally formed with a spike end 5. The arrangement of the spike end 5 can make the insertion of the anchor head 2 into the anchor hole faster, and the spike end 5 can be utilized to better insert the anchor hole.

[0028] A grouting hole 6 is provided on the anchor head 2, and a grouting plug 9 is threadedly installed on the outer surface of one of the hollow screws 1. The purpose of the grouting plug 9 is to seal the anchor hole, thereby preventing the grout from leaking out when the grout is injected into the grouting hole 6.

[0029] A backing plate 8 is fixedly mounted on the side of the grout-stopping plug 9. When the grout-stopping plug 9 is inserted into the anchor hole, the backing plate 8 can fit with the mounting surface, thereby utilizing the setting of the backing plate 8 to better prevent grout from leaking out.

[0030] A connecting flange 4 is fixedly mounted on the end of the hollow connecting rod 3. The setting of the connecting flange 4 can be stably assembled and connected with an external mounting position.

[0031] A plurality of slide cylinders 14 are fixedly installed on the outer surface of the grouting stopper 9, and a slide rod 15 is slidably installed in the slide cylinder 14. The slide rod 15 slides out of the slide cylinder 14 and is fixedly installed with a rolling ball 16. By sliding the slide rod 15 in the slide cylinder 14 and using it in conjunction with the rolling ball 16, the grouting stopper 9 can be stably coaxial with the anchor hole, effectively preventing displacement and misalignment.

[0032] An elastic inner tightening plate 7 is fixedly installed on the outer surface of the anchor head 2, and a barb plate 12 is fixedly installed on the surface of the inner tightening plate 7. The inner tightening plate 7 is used in conjunction with the barb plate 12 to effectively support and protect the anchor head 2 inserted into the anchor rod hole to avoid backward sliding.

[0033] An assembling collar 10 is fixedly installed on one end of the anchor head 2 and one end of the hollow screw 1. A plurality of assembling clamping balls 11 are provided on the outer surface of the assembling collar 10. A plurality of assembling clamping grooves are provided on the inner wall of the other end of the hollow screw 1 and one end of the hollow connecting rod 3. The assembling clamping balls 11 are used in combination with the assembling clamping grooves. By using the assembling collar 10 in combination with the assembling clamping balls 11, effective connection between adjacent hollow screws 1, between the hollow screw 1 and the anchor head 2, and between the hollow screw 1 and the hollow connecting rod 3 can be achieved. The connection structure is simple and the operation is convenient.

[0034] A mounting groove is provided on the side of the backing plate 8, and a sealing ring 13 is embedded in the mounting groove. The mounting groove cooperates with the sealing ring 13 to effectively seal the backing plate 8 and the plane where the anchor hole is located.

[0035] A spring 17 is fixedly installed on the inner wall of the slide tube 14, and the spring 17 is fixedly connected to the slide rod 15. The elasticity of the spring 17 can make the slide rod 15 always be subjected to an outward force, and the ball 16 is always pressed against the inner wall of the anchor hole.

[0036] A plurality of limit sliders 18 are fixedly installed on the outer surface of the slide rod 15, and a limit slide groove is provided on the inner wall of the slide cylinder 14. The limit slider 18 is slidably installed on the inner wall of the limit slide groove. The limit slider 18 slides in the limit slide groove to ensure the stable sliding of the slide rod 15 and prevent the slide rod 15 from detaching from the slide cylinder 14 when sliding.

[0037] When in use, first select and use a suitable number of hollow screws 1 according to the length of the anchor hole, and assemble adjacent hollow screws 1 through the assembly collar 10 and the assembly clamping ball 11. The hollow screw 1 and the anchor head 2 at the end and the hollow connecting rod 3 are also assembled through the assembly collar 10 and the assembly clamping ball 11. After assembly, the spike end 5 is inserted into the anchor hole. When inserted, the inner tightening plate 7 will deform. After it is fully assembled, the inner tightening plate 7 cooperates with the barbed plate 12 to tighten against the inner wall of the anchor hole to prevent shaking, and then Twist the stop plug 9 so that it blocks the anchor hole, and the pad 8 will fit with the plane where the anchor hole is located, and cooperate with the sealing ring 13 to achieve sealing. At this time, the force of the spring 17 drives the sliding rod 15 to move outward, and then presses the inner wall of the anchor hole through the rolling ball 16 to achieve stable support for the entire anchor, so that the anchor and the anchor hole are arranged coaxially, and then connected to the external grouting pump through the connecting flange 4, and the slurry is grouted through the hollow connecting rod 3, the hollow screw 1, and the anchor head 2.

Claims

1. A combined anchor structure, characterized in that: The invention comprises an anchor head (2), a hollow connecting rod (3) and a plurality of hollow screws (1) located between the anchor head (2) and the hollow connecting rod (3); the anchor head (2) and the hollow screw (1), two adjacent hollow screws (1) and the hollow screw (1) and the hollow connecting rod (3) are all movably arranged; one end of the anchor head (2) away from the hollow screw (1) is integrally formed with a spike end (5); a grouting hole (6) is opened on the anchor head (2); a grouting stopper (6) is threadedly installed on the outer surface of one of the hollow screws (1); 9), a gasket (8) is fixedly installed on the side of the stop plug (9), a connecting flange (4) is fixedly installed on the end of the hollow connecting rod (3), a plurality of slide cylinders (14) are fixedly installed on the outer surface of the stop plug (9), a slide rod (15) is slidably installed in the slide cylinder (14), the slide rod (15) slides and extends out of the slide cylinder (14) and is fixedly installed with a rolling ball (16); an elastic inner tightening plate (7) is fixedly installed on the outer surface of the anchor head (2), and a barbed plate (12) is fixedly installed on the surface of the inner tightening plate (7).

2. The combined anchor structure according to claim 1, characterized in that: An assembly ring (10) is fixedly mounted on one end of the anchor head (2) and one end of the hollow screw rod (1), and a plurality of assembly clamping balls (11) are provided on the outer surface of the assembly ring (10). A plurality of assembly clamping grooves are provided on the inner wall of the other end of the hollow screw rod (1) and one end of the hollow connecting rod (3), and the assembly clamping balls (11) and the assembly clamping grooves are used in combination.

3. The combined anchor structure according to claim 1, characterized in that: The side of the backing plate (8) is provided with a mounting groove, and a sealing ring (13) is embedded in the mounting groove.

4. The combined anchor structure according to claim 1, characterized in that: A spring (17) is fixedly mounted on the inner wall of the slide cylinder (14), and the spring (17) is fixedly connected to the slide rod (15).

5. The combined anchor structure according to claim 1, characterized in that: A plurality of limit slide blocks (18) are fixedly mounted on the outer surface of the slide rod (15), a limit slide groove is provided on the inner wall of the slide cylinder (14), and the limit slide blocks (18) are slidably mounted on the inner wall of the limit slide groove.

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