A grouting reinforcement anchor rod for support

Abstract

A grouting reinforcement anchor rod for support, through the rotation of the main shaft A, main shaft B, and main shaft C to drive the drill bit to rotate for drilling, when the hole is drilled to the designed depth, the lateral anchor rod is pushed by the jacking equipment, and the lateral anchor rod pushes the bending anchor rod forward through the connecting piece, and the front end of the bending anchor rod enters the bending channel along the bending groove under the action of the force, and the front end of the bending anchor rod enters the soil after entering the end of the bending channel, and the bending anchor rod presents a certain angle with the drill hole, and the lateral anchor rod A and the lateral anchor rod B are fixed to the anchor plate, and grouting is carried out from the grouting hole, and the air is exhausted from the air outlet. After the concrete strength reaches more than 75%, the main shaft C is tensioned and anchored to complete the grouting reinforcement anchor rod for support, and the anchoring area of ​​the bent anchor rod interacts with the anchoring area of ​​the main shaft and carries the load in coordination, which can improve the support effect. The anchor rod combination is suitable for anchoring the slope of soil foundation pit.

Description

Technical Field

[0001] The invention relates to a grouting reinforcement anchor rod for support, which is particularly suitable for support in the fields of deep foundation pits, slope protection and the like. Background Art

[0002] At present, anchor rods are widely used in the field of surrounding rock support as a low-cost, effective and convenient on-site construction support method. CN107387141B proposes a self-drilling differential grouting combined anchor rod and its anchoring method. The anchor rod consists of a drill bit, a grouting pipe, a main shaft, an anchor head mechanism and an anchor tail mechanism. The anchor head mechanism includes a fixed ring, a sliding ring, a limit tube, a plurality of pairs of passive connecting rods and an active connecting rod. The anchor head mechanism cooperates with the splitting grouting to ensure the stability of the anchor end inside the anchor rod. The anchor tail mechanism includes an anchor plate, a connecting cap, a spring and a nut; the connecting cap makes the grouting pipe and the main shaft deform in coordination and bear the load together, and the spring makes the anchor rod enter in time and be in an active support state for a long time. The combined anchor rod can be used to drill holes in weak and broken surrounding rocks, expand holes and split grouting at the inner anchor end, and perform infiltration grouting in the remaining sections. The grouting pipe is anchored to the surrounding rock in a small range by full-length anchoring; the main shaft has an extrusion and reinforcement effect on the surrounding rock in a large range including the grouting pipe anchoring area. The grouting pipe anchoring area and the main shaft anchoring area interact with each other and carry loads synergistically, which can improve the support effect. In slope support, how the anchor rod can play a high-strength prestressed reinforcement role on the supporting rock mass and increase the pull-out resistance of the anchor rod itself is a problem that needs to be solved urgently in the current anchor rod support field. Summary of the invention

[0003] To achieve the above-mentioned purpose of the present invention, a grouting reinforcement anchor rod for support of the present invention is implemented by the following technical scheme: a grouting reinforcement anchor rod for support, including a drilling hole, a tunneling mechanism, a reinforcement anchoring mechanism, and an anchor tail mechanism, the tunneling mechanism includes a drill bit, a main shaft A, a main shaft B, and a main shaft C; the reinforcement anchoring mechanism includes a curved channel A, a transverse channel A, a curved anchor rod A, a transverse anchor rod A, a curved channel B, a transverse channel B, a curved anchor rod B, a transverse anchor rod B, a connecting piece, a curved groove, a spherical groove, and a push rod; the anchor tail mechanism includes a grouting plug, an anchor plate, a nut, an exhaust hole, and a grouting hole; it is characterized in that the end of the drilling hole is a drill bit, the drill bit is connected to the main shaft A at the rear, the main shaft A is connected to the main shaft B at the rear, the main shaft B is connected to the main shaft C, the main shaft C is connected to the anchor plate at the rear, and the anchor plate is connected to the nut at the back.

[0004] The transverse channel A is evenly distributed along the circumference of the main axis B and is inscribed in the main axis B. The front end of the transverse channel A is welded to the curved channel A. The transverse anchor rod A is in the transverse channel A. The curved anchor rod A is in the curved channel A. The front end of the transverse anchor rod A is hinged to the curved anchor rod A through a connecting piece.

[0005] The transverse channel B is evenly distributed along the circumference of the main axis C and is inscribed in the main axis C. The front end of the transverse channel B is welded to the curved channel B. The transverse anchor rod B is in the transverse channel B. The curved anchor rod B is in the curved channel B. The front end of the transverse anchor rod B is hinged to the curved anchor rod B through a connecting piece.

[0006] The curved anchor rod A and the curved anchor rod B are composed of multiple units, each unit includes a spherical groove, a push rod and a curved anchor rod unit. A spherical groove is set at the center position of the end of the curved anchor rod unit, and a push rod is set between the spherical grooves of adjacent curved anchor rod units. Two balls are set at both ends of the push rod, and the balls rotate freely in the spherical groove.

[0007] The circumferential diameters of the main axis A and the main axis B are equal, the diameter of the main axis C is equal to the sum of the diameter of the main axis B and five times the transverse anchor rod B, the diameter of the curved channel A is equal to the diameter of the curved anchor rod A, and the diameter of the transverse channel A is equal to the diameter of the transverse anchor rod A.

[0008] The bending groove is a groove-shaped groove, and the diameter of the groove end is consistent with the diameter of the bending anchor rod A.

[0009] The beneficial effects of the present invention are:

[0010] After adopting the above technical scheme, a grouting reinforcement anchor rod for support of the present invention has the following beneficial effects: transverse anchor rod A and transverse anchor rod B are arranged circumferentially on the main axis B and the main axis C, and the transverse anchor rod A and the front end of the transverse anchor rod are respectively connected to the curved anchor rod A and the curved anchor rod B. Under the action of mechanics, the curved anchor rod enters the curved channel along the curved groove, and the front end of the curved anchor rod enters the soil after entering the end of the curved channel. The curved anchor rod presents a certain angle with the drill hole to achieve the anchor rod reinforcement support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention.

[0012] Figure 2 It is a schematic diagram of the working state of the structure of the present invention.

[0013] Figure 3 It is a left view of the present invention.

[0014] Figure 4 It is the right view of BB section.

[0015] Figure 5 This is the right view of section AA.

[0016] Figure 6 A is a partial enlarged view.

[0017] Figure 7 This is a partial enlarged top view of A.

[0018] Figure 8This is a partial enlarged side view of A.

[0019] Fig. 9 This is the combined diagram of the bent anchor unit.

[0020] Marked in the figure are: borehole 1, drill bit 2, main shaft A31, main shaft B32, main shaft C33, curved channel A4, transverse channel A5; curved anchor rod A6, transverse anchor rod A7, curved channel B8, transverse channel B9; curved anchor rod B10, transverse anchor rod B11, connecting part 12, grouting plug 13, anchor plate 14, nut 15, vent hole 16, grouting hole 17, curved groove 18, spherical groove 19, push rod 20, curved anchor rod unit 21. DETAILED DESCRIPTION

[0021] To further describe the present invention, a grouting reinforcement anchor rod for support of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] like Figure 1-9 As shown, a grouting reinforcement anchor rod for support includes a drilling hole 1, a tunneling mechanism, a reinforcement anchoring mechanism, and an anchor tail mechanism. The tunneling mechanism includes a drill bit 2, a main shaft A31, a main shaft B32, and a main shaft C33; the reinforcement anchoring mechanism includes a curved channel A4, a transverse channel A5, a curved anchor rod A6, a transverse anchor rod A7, a curved channel B8, a transverse channel B9, a curved anchor rod B10, a transverse anchor rod B11, a connecting piece 12, a curved groove 18, a spherical groove 19, and a push rod 20; the anchor tail mechanism includes a grouting plug 13, an anchor plate 14, a nut 15, an exhaust hole 16, and a grouting hole 17; the end of the drilling hole 1 is a drill bit 2, the rear of the drill bit 2 is connected to the main shaft A31, the rear of the main shaft A31 is connected to the main shaft B32, the main shaft B32 is connected to the main shaft C33, the rear of the main shaft C33 is connected to the anchor plate 14, and the rear of the anchor plate 14 is connected to the nut 15.

[0023] The transverse channel A5 is evenly distributed along the circumference of the main axis B32 and is inscribed inwardly with the main axis B32. The front end of the transverse channel A5 is welded to the curved channel A4. The transverse anchor rod A7 is in the transverse channel A5. The curved anchor rod A6 is in the curved channel A4. The front end of the transverse anchor rod A7 is hinged to the curved anchor rod A6 through a connecting piece 12.

[0024] The transverse channel B9 is evenly distributed along the circumference of the main axis C33 and is inscribed inwardly with the main axis C33. The front end of the transverse channel B9 is welded to the curved channel B8. The transverse anchor rod B11 is in the transverse channel B9. The curved anchor rod B10 is in the curved channel B8. The front end of the transverse anchor rod B11 is hinged to the curved anchor rod B10 through a connecting piece 12.

[0025] The curved anchor rod A6 and the curved anchor rod B10 are composed of multiple units, each unit includes a spherical groove 19, a push rod 20 and a curved anchor rod unit 21, a spherical groove 19 is set at the center position of the end of the curved anchor rod unit 21, a push rod 20 is set between the spherical grooves (19) of adjacent curved anchor rod units 21, and two spherical balls are set at both ends of the push rod 20, and the spherical balls rotate freely in the spherical groove 19.

[0026] The circumferential diameters of the main axis A31 and the main axis B32 are equal, the diameter of the main axis C33 is equal to the sum of the diameter of the main axis B32 and five times the transverse anchor rod B11, the diameter of the curved channel A4 is equal to the diameter of the curved anchor rod A6, and the diameter of the transverse channel A5 is equal to the diameter of the transverse anchor rod A7.

[0027] The bending groove 18 is a groove-shaped groove, and the diameter of the groove end is consistent with the diameter of the bending anchor rod A6.

[0028] Working principle.

[0029] The present invention comprises a drilling hole 1, a tunneling mechanism, a reinforcing anchoring mechanism, and an anchor tail mechanism, and ingeniously integrates the functions of drilling a hole 1, reinforcing anchoring, grouting, and anchor support. The basic principle is to drive the drill bit 2 to rotate by rotating the main shaft A31, the main shaft B32, and the main shaft C33 to drill a hole 1. When the hole 1 reaches the designed depth, a jacking device is used to jack the transverse anchor rod A7. The transverse anchor rod A7 jacks the connecting piece 12 to move the bent anchor rod A6 forward. Under the action of the force, the front end of the bent anchor rod A6 enters the bent channel A4 along the bent groove 18. Under the action of the force, the front end of the bent anchor rod A6 passes through the end of the bent channel A4 and enters the soil. The bent anchor rod A6 Rod A6 is at a certain angle to borehole 1; use jacking equipment to jack the transverse anchor rod B11, and the transverse anchor rod 10B jacks the connecting piece 12 to move the bent anchor rod B10 forward. Under the action of force, the front end of the bent anchor rod B10 enters the curved channel B8 along the curved groove 18. Under the action of force, the front end of the bent anchor rod B10 enters the end of the curved channel B8 and then enters the soil. The bent anchor rod B10 is at a certain angle to borehole 1; fix the transverse anchor rod A7 and transverse anchor rod B11 to the anchor plate 14, grouting is performed from the grouting hole 17, and exhaust is performed from the air outlet 16. After the concrete strength reaches more than 75%, the main axis C33 is tensioned and anchored. The work of grouting and reinforcing anchor rods for support is completed.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A grouting reinforcement anchor rod for support, characterized in that The invention comprises a drilling hole (1), a tunneling mechanism, a reinforcing anchoring mechanism and an anchor tail mechanism. The tunneling mechanism comprises a drill bit (2), a main shaft A (31), a main shaft B (32) and a main shaft C (33). The reinforcing anchoring mechanism comprises a curved channel A (4), a transverse channel A (5), a curved anchor rod A (6), a transverse anchor rod A (7), a curved channel B (8), a transverse channel B (9), a curved anchor rod B (10), a transverse anchor rod B (11), a connecting piece (12), a curved groove (18), a ball shaped groove (19), and a push rod (20); the anchor tail mechanism comprises a grout stopper (13), an anchor plate (14), a nut (15), an exhaust hole (16), and a grouting hole (17); the end of the drill hole (1) is a drill bit (2), the rear of the drill bit (2) is connected to a main shaft A (31), the rear of the main shaft A (31) is connected to a main shaft B (32), the main shaft B (32) is connected to a main shaft C (33), the rear of the main shaft C (33) is connected to an anchor plate (14), and the rear of the anchor plate (14) is connected to a nut (15); The transverse channel A (5) is evenly distributed along the circumference of the main axis B (32) and the transverse channel A (5) is inscribed in the main axis B (32). The front end of the transverse channel A (5) is welded to the curved channel A (4). The transverse anchor rod A (7) is located in the transverse channel A (5). The curved anchor rod A (6) is located in the curved channel A (4). The front end of the transverse anchor rod A (7) is hinged to the curved anchor rod A (6) through a connecting piece (12). The transverse channel B (9) is evenly distributed along the circumference of the main axis C (33) and the transverse channel B (9) is inscribed in the main axis C (33). The front end of the transverse channel B (9) is welded to the curved channel B (8). The transverse anchor rod B (11) is located in the transverse channel B (9). The curved anchor rod B (10) is located in the curved channel B (8). The front end of the transverse anchor rod B (11) is hinged to the curved anchor rod B (10) through a connecting piece (12). The curved anchor rod A (6) and the curved anchor rod B (10) are composed of a plurality of units, each unit comprising a spherical groove (19), a push rod (20) and a curved anchor rod unit (21); a spherical groove (19) is arranged at the center of the end of the curved anchor rod unit (21); a push rod (20) is arranged between the spherical grooves (19) of adjacent curved anchor rod units (21); two spherical balls are arranged at both ends of the push rod (20), and the spherical balls rotate freely in the spherical groove (19); The circumferential diameters of the main axis A (31) and the main axis B (32) are equal, the diameter of the main axis C (33) is equal to the sum of the diameter of the main axis B (32) and five times the transverse anchor rod B (11), the diameter of the curved channel A (4) is equal to the diameter of the curved anchor rod A (6), and the diameter of the transverse channel A (5) is equal to the diameter of the transverse anchor rod A (7).

2. A grouting reinforcement anchor rod for support as claimed in claim 1, characterized in that: The bending groove (18) is a groove-shaped groove, and the diameter of the groove end is consistent with the diameter of the bending anchor rod A (6).

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