A composite anchor rod of steel cable and rigid shaft

Abstract

A composite anchor rod of steel cable and rigid shaft comprises a central shaft, a top frame, a bottom frame, a sliding sleeve, an intermediate frame and a steel cable, wherein the central shaft is vertically arranged, the top frame is arranged at the upper end of the central shaft, the bottom frame is arranged at the lower end of the central shaft, the sliding sleeve is evenly arranged at the middle of the outer circle of the central shaft, the intermediate frame is arranged between the sliding sleeves on the outer circle of the central shaft, and the steel cable is evenly arranged between the top frame, the bottom frame, the sliding sleeve and the intermediate frame. The present invention adopts the above technical scheme and achieves good results: the composite anchor rod of steel cable and rigid shaft effectively exerts the flexible buffering effect of the steel cable through the coordinated use of the central shaft and the outer steel cable, and the steel cable is formed into a broken line shape through the coordinated use of the intermediate frame and the sliding sleeve, which is more conducive to the force of the steel cable, effectively solves the problem of poor buffering of the traditional anchor rod shaft, significantly improves the anchoring strength of the shelter, and makes the shelter stronger.

Description

Technical Field

[0001] The invention mainly relates to the field of shelter protection, and in particular to a composite anchor rod of a steel cable and a rigid shaft. Background Art

[0002] In the field of protection of underground shelters, dome-shaped reinforced concrete is usually used for dome protection. However, with the continuous improvement of modern strike means, the force of strikes has far exceeded the range that traditional protection means can withstand. Therefore, anchor rods are usually used to reinforce the upper part of the existing reinforced concrete arch protection layer. When anchoring anchor rods on some soft material shelter walls, in order to improve the shelter's anti-strike strength, the anchor rods can perform a certain axial buffering displacement when the shelter is hit, which can better increase the strength of the shelter. Therefore, better steel ropes are used for anchoring. However, since the steel rope is elastic, only by tightening the steel rope can the buffering effect be maximized during anchoring, while the rigid anchor rod has little elasticity and cannot perform buffering. Therefore, a new type of anchor rod is needed to solve the problems of poor axial buffering of the existing anchor rods and the inability to tighten the elastic steel rope to play a better buffering role. Summary of the invention

[0003] The present invention proposes a composite anchor rod of a steel cable and a rigid shaft, which is used to solve the problems of poor axial buffering of the existing anchor rod and the inability of the elastic steel rope to be tightened to play a better buffering role.

[0004] The purpose of the present invention is achieved by adopting the following technical solutions:

[0005] A composite anchor rod of a steel cable and a rigid shaft comprises a central shaft, a top frame, a bottom frame, a sliding sleeve, an intermediate frame and a steel cable. The central shaft is vertically arranged, the top frame is arranged at the upper end of the central shaft, the bottom frame is arranged at the lower end of the central shaft, the sliding sleeve is evenly arranged in the middle of the outer circle of the central shaft, the intermediate frame is arranged between the sliding sleeves on the outer circle of the central shaft, and the steel cable is evenly arranged between the top frame, the bottom frame, the sliding sleeve and the intermediate frame; the central shaft is provided with external threaded shafts at both ends, a nut is provided on the upper external threaded shaft of the central shaft, and an external square column is provided at the lower end of the lower external threaded shaft of the central shaft; the The top frame is a three-sided centering frame structure, with a vertically arranged cylindrical top frame center sleeve in the middle of the top frame, top frame fixing rods of rectangular rod structure are evenly arranged on the outside of the top frame center sleeve, wedge-shaped steel cable fixing holes are arranged on the upper edge of the top frame fixing rods, a screw sleeve is arranged in the center hole of the top frame center sleeve, the outer circle of the screw sleeve is gap-matched with the center hole of the top frame, retaining rings are arranged at the upper and lower ends of the screw sleeve, the inner side of the retaining ring is in contact with the upper and lower surfaces of the top frame, an outer hexagonal column is arranged on the outer side of the upper retaining ring of the screw sleeve, and the inner threaded hole of the screw sleeve is matched with the upper external threaded shaft of the center axis.

[0006] The sliding sleeve is a cylindrical tube, the center hole of the sliding sleeve is slidably matched with the outer circle of the middle part of the central axis, sliding sleeve ear plates are evenly arranged on the outer circle of the sliding sleeve, ear plate through holes are arranged on the sliding sleeve ear plates, and locking bolts are arranged on the outer end of the sliding sleeve ear plates at positions corresponding to the ear plate through holes.

[0007] The intermediate frame is a triangular centering frame structure, the intermediate frame is a cylindrical intermediate frame center sleeve, the center hole of the intermediate frame center sleeve is slidably matched with the outer circle of the center shaft, the outer side of the intermediate frame center sleeve is evenly provided with intermediate frame fixing rods of rectangular rod structure, the upper edge of the intermediate frame fixing rod is provided with a steel cable through hole, and a locking bolt is provided on the outer end of the intermediate frame fixing rod at a position corresponding to the steel cable through hole.

[0008] The bottom frame is consistent with the top frame in structure and is symmetrically arranged with the top frame. The screw sleeve in the middle of the bottom frame is matched and connected with the external threaded shaft at the lower end of the central shaft.

[0009] The steel cable is a multi-strand steel wire rope, and the two ends of the steel cable are bent into wedge-shaped rings by wedge blocks, tightened with a steel wire rope lock, and installed in the steel cable fixing holes of the top frame and the steel cable fixing holes of the bottom frame. The middle part of the steel cable passes through the ear plate through hole of the sliding sleeve and the steel cable through hole of the middle frame, and is tightened by a locking bolt arranged on its outer side.

[0010] The present invention adopts the above technical scheme and achieves good results: the composite anchor rod of steel cable and rigid shaft is used in coordination with the central shaft and the outer steel cable, which effectively exerts the flexible buffering effect of the steel cable, and through the coordination of the intermediate frame and the sliding sleeve, the steel cable is formed into a broken line shape, which is more conducive to the force of the steel cable, effectively solves the problem of poor buffering of the traditional anchor rod shaft, significantly improves the anchoring strength of the shelter, and makes the shelter more solid. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0012] Figure 2 for Figure 1 Schematic diagram of the structure of the middle top frame.

[0013] Figure 3 for Figure 1 Schematic diagram of the structure of the middle sleeve.

[0014] Figure 4 for Figure 1 Schematic diagram of the structure of the center frame.

[0015] Figure 5 for Figure 1 A is an enlarged view of the middle image.

[0016] In the figure: 1, center axis, 2, middle frame, 3, steel cable, 4, nut, 5, top frame, 6, sliding sleeve, 7, outer square column, 8, bottom frame, 9, steel cable fixing hole, 10, top frame fixing rod, 11, screw sleeve, 12, top frame center sleeve, 13, sliding sleeve, 14, sliding sleeve ear plate, 15, middle frame center sleeve, 16, middle frame fixing rod, 17, wire rope lock buckle, 18, wedge block. DETAILED DESCRIPTION

[0017] The present invention is described with reference to the accompanying drawings.

[0018] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The composite anchor rod of a steel cable and a rigid shaft shown in the figure comprises a central shaft 1, a top frame 5, a bottom frame 8, a sliding sleeve 6, an intermediate frame 2 and a steel cable 3. The central shaft 1 is vertically arranged, and the central shaft 1 is provided with external threaded shafts at both ends. A nut 4 is provided on the upper external threaded shaft of the central shaft 1, and an external square column 7 is provided at the lower end of the lower external threaded shaft of the central shaft 1; the top frame 5 is arranged at the upper end of the central shaft 1, and the top frame 5 is a triangular centering frame structure. The middle of the top frame 5 is a vertically arranged cylindrical top frame center sleeve 12, and the outer side of the top frame center sleeve 12 is evenly provided with a top frame fixing rod 10 of a rectangular rod structure, and the upper edge of the top frame fixing rod 10 is provided with A wedge-shaped cable fixing hole 9, a screw sleeve 11 is arranged in the center hole of the center sleeve 12 of the top frame, the outer circle of the screw sleeve 11 is matched with the gap of the center hole of the top frame 5, and retaining rings are arranged at the upper and lower ends of the screw sleeve 11, and the inner side of the retaining ring is in contact with the upper and lower surfaces of the top frame 5. An outer hexagonal column is arranged on the outer side of the upper retaining ring of the screw sleeve 11, and the inner threaded hole of the screw sleeve 11 is matched with the upper external threaded shaft of the central axis 1; the base frame 8 is arranged at the lower end of the central axis 1, and the base frame 8 is consistent with the structure of the top frame 5, and is symmetrically arranged with the top frame 5 up and down, and the screw sleeve in the middle of the base frame 8 is matched with the lower end external threaded shaft of the central axis 1; the sliding sleeve 6 is evenly arranged on the central axis 1 In the middle of the outer circle, the sliding sleeve 6 is a cylindrical tube, the center hole of the sliding sleeve 6 is slidably matched with the outer circle of the middle part of the central axis 1, and the sliding sleeve ear plates 14 are evenly arranged on the outer circle of the sliding sleeve 6, and the sliding sleeve ear plates 14 are provided with ear plate through holes, and locking bolts are arranged on the outer ends of the sliding sleeve ear plates 14 at positions corresponding to the ear plate through holes; the intermediate frame 2 is arranged between the sliding sleeves 6 on the outer circle of the central axis 1, the intermediate frame 2 is a triangular centering frame structure, the intermediate frame 2 is a cylindrical intermediate frame center sleeve 15, the center hole of the intermediate frame center sleeve 15 is slidably matched with the outer circle of the central axis 1, and the outer side of the intermediate frame center sleeve 15 is evenly provided with intermediate frame fixings with rectangular rod structures Rod 16, the upper edge of the intermediate frame fixing rod 16 is provided with a steel cable through hole, and a locking bolt is provided on the outer end of the intermediate frame fixing rod 16 at a position corresponding to the steel cable through hole; the steel cable 3 is evenly arranged between the top frame 5, the bottom frame 8, the sliding sleeve 13 and the intermediate frame 2, the steel cable 3 is a multi-strand steel wire rope, and the two ends of the steel cable 3 are respectively bent into a wedge-shaped ring by a wedge block 18, and are compressed with a wire rope lock buckle 17, and are installed in the steel cable fixing hole 9 of the top frame 5 and the steel cable fixing hole of the bottom frame 8. The middle part of the steel cable 3 passes through the ear plate through hole of the sliding sleeve 13 and the steel cable through hole of the intermediate frame 2, and the steel cable 3 is compressed by the locking bolt arranged on its outer side.

[0019] When the steel cable and rigid shaft composite anchor rod is used, first, the steel cable 3 and the rigid shaft composite anchor rod top frame 5 are placed in front of the anchor hole drilled on the shelter, and then a wrench is used to fix the outer square column 7 at the lower end of the central axis 1, and then a wrench is used to rotate the outer hexagonal threaded sleeve of the bottom frame 8 to move the bottom frame 8 downward, and at the same time, the steel cable 3 is tightened to keep the intermediate frame 2 and the sliding sleeve 6 evenly spaced on the central axis 1, and an anchor hole cover is added to the front end of the anchor hole of the shelter, and then the anchor hole grouting grouting is injected into the anchor hole. After the grouting grouting solidifies, the anchor hole cover is removed to complete the installation process of the steel cable and rigid shaft composite anchor rod.

[0020] The parts not described in detail in this invention are prior art.

Claims

1. A composite anchor rod of a steel cable and a rigid shaft, comprising a central shaft, a top frame, a bottom frame, a sliding sleeve, an intermediate frame and a steel cable, characterized in that: The central axis is vertically arranged, the top frame is arranged at the upper end of the central axis, the bottom frame is arranged at the lower end of the central axis, the sliding sleeve is evenly arranged in the middle of the outer circle of the central axis, the intermediate frame is arranged between the sliding sleeves on the outer circle of the central axis, and the steel cable is evenly arranged between the top frame, the bottom frame, the sliding sleeve and the intermediate frame; the central axis is provided with external threaded shafts at both ends, a nut is provided on the external threaded shaft at the upper part of the central axis, and an external square column is provided at the lower end of the lower external threaded shaft of the central axis; the top frame is a triangular centering frame structure, the middle of the top frame is a vertically arranged cylindrical top frame center sleeve, the outer side of the top frame center sleeve is evenly provided with a top frame fixing rod of a rectangular rod structure, the upper edge of the top frame fixing rod is provided with a wedge-shaped steel cable fixing hole, a screw sleeve is provided in the center hole of the top frame center sleeve, the outer circle of the screw sleeve is gap-matched with the center hole of the top frame, and retaining rings are provided at the upper and lower ends of the screw sleeve, the inner side of the retaining ring is in contact with the upper and lower surfaces of the top frame, an external hexagonal column is provided on the outer side of the upper retaining ring of the screw sleeve, and the inner threaded hole of the screw sleeve is matched with the external threaded shaft at the upper part of the central axis; The sliding sleeve is a cylindrical tube, the central hole of the sliding sleeve is slidably matched with the outer circle of the middle part of the central axis, the outer circle of the sliding sleeve is evenly provided with sliding sleeve ear plates, the sliding sleeve ear plates are provided with ear plate through holes, and the outer end of the sliding sleeve ear plates is provided with locking bolts at positions corresponding to the ear plate through holes; The intermediate frame is a triangular centering frame structure, the intermediate frame is a cylindrical intermediate frame center sleeve, the center hole of the intermediate frame center sleeve is slidably matched with the outer circle of the center shaft, the outer side of the intermediate frame center sleeve is evenly provided with intermediate frame fixing rods of rectangular rod structure, the upper edge of the intermediate frame fixing rod is provided with a steel cable through hole, and the outer end of the intermediate frame fixing rod is provided with a locking bolt at a position corresponding to the steel cable through hole; The bottom frame is consistent with the top frame in structure and is symmetrically arranged with the top frame. The screw sleeve in the middle of the bottom frame is connected with the external threaded shaft at the lower end of the central shaft. The steel cable is a multi-strand steel wire rope, and the two ends of the steel cable are bent into wedge-shaped rings by wedge blocks, tightened with a steel wire rope lock, and installed in the steel cable fixing holes of the top frame and the steel cable fixing holes of the bottom frame. The middle part of the steel cable passes through the ear plate through hole of the sliding sleeve and the steel cable through hole of the middle frame, and is tightened by a locking bolt arranged on its outer side.

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