End expansion type seam pipe anchor rod

Abstract

The utility model relates to the field of expansion type seam pipe anchor rods, in particular to an end expansion type seam pipe anchor rod which comprises a transverse pipe body, a first opening is transversely formed in the upper side of the pipe body in a penetrating mode, two parallel baffle rings are welded to the outer side face of the right end of the pipe body at intervals, and a tray is arranged on the pipe body on the left sides of the baffle rings in a penetrating mode. The left end of the tube body is provided with a big-end-right conical tube head, the upper side of the conical tube head is provided with a second opening communicated with the first opening, and the left side of the conical tube head is provided with an expansion head. The anchor rod has the advantages that the anchor rod is provided with the spring type expansion head, the double baffle rings are arranged at the tail of the anchor rod, the anchoring effect can be enhanced, and the problems in the background technology are effectively solved; the device is easy to operate, convenient to use and suitable for various anchoring environments.

Description

Technical Field

[0001] The utility model relates to the field of expansion type seam pipe anchor rods, in particular to an end expansion type seam pipe anchor rod. Background Art

[0002] The pipe-slit anchor is a new type of anchor that provides full-length anchoring and actively reinforces the surrounding rock. Its three-dimensional portion consists of a high-strength steel pipe with longitudinal slits. When installed in a borehole slightly smaller than the pipe diameter, it immediately applies radial pressure to the hole wall along its entire length, as well as friction to prevent the surrounding rock from sliding down. Combined with the support of the anchor support plate, this creates a three-dimensional stress state for the surrounding rock and stabilizes the formation. In situations such as blasting vibration and surrounding rock displacement, the anchoring force significantly increases in the later stages. Even when the surrounding rock undergoes significant displacement, the anchor maintains its support resistance, offering superior characteristics to expansion shell anchors.

[0003] However, the existing seam pipe anchor has a relatively simple structure and limited functions. Its end is not provided with a structure for expansion to enhance the anchoring effect. It is not suitable for application environments that require a stronger anchoring effect and is not conducive to expanding the scope of use. Summary of the Invention

[0004] In response to the deficiencies of the prior art, the present invention provides an end-expandable seam pipe anchor rod, which has a spring-type expansion head at the top and a double retaining ring at the tail, thereby enhancing the anchoring effect and effectively solving the problems raised in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an end-expandable seam pipe anchor, comprising a transverse pipe body, a first opening being formed transversely through the upper side of the pipe body, two parallel retaining rings being welded to the outer side of the right end of the pipe body at intervals, and a tray being inserted through the pipe body on the left side of the retaining ring;

[0006] The left end of the tube body is provided with a tapered tube head with a smaller left side and a larger right side. A second opening communicating with the first opening is provided on the upper side of the tapered tube head, and an expansion head is provided on the left side of the tapered tube head.

[0007] As a preferred technical solution, the expansion head includes a conical wedge iron with a larger left side and a smaller right side, the outer periphery of the conical wedge iron is wrapped with a wedge-shaped expansion piece, the wedge-shaped expansion piece is fixedly connected to the connecting blade, and a booster spring is provided between the connecting blade and the conical wedge iron;

[0008] The right end of the tapered wedge is welded and fixed to the left end of the tapered pipe head;

[0009] The outer sides of the wedge-shaped expansion pieces are wrapped with plastic clamps.

[0010] As a preferred technical solution, the outer surface of the wedge-shaped expansion piece has a wavy structure.

[0011] As a preferred technical solution, the connecting blade includes a circular end cap on the left side, and a connecting piece corresponding to the number of wedge-shaped expansion pieces is fixed to the right of the edge of the end cap, and the right end of the connecting piece is fixedly connected to the outer surface of the left end of the wedge-shaped expansion piece.

[0012] As a preferred technical solution, a strip-shaped groove that cooperates with the connecting piece is embedded circumferentially on the outer surface of the left end portion of the conical wedge.

[0013] As a preferred technical solution, an arc-shaped notch cooperating with the connecting piece is embedded in the middle of the left end portion of the outer surface of the wedge-shaped expansion piece.

[0014] As a preferred technical solution, a columnar connecting block is fixed to the right end of the tapered wedge iron, and the outer surface of the columnar connecting block is welded and fixed to the inner surface of the left end of the tapered tube body.

[0015] As a preferred technical solution, the left end surface of the conical wedge is embedded with a circular groove that matches the right end of the booster spring.

[0016] As a preferred technical solution, a limiting protrusion cooperating with the boost spring is fixedly provided at the center position of the right side surface of the end cap.

[0017] As a preferred technical solution, the number of the wedge-shaped expansion pieces and the number of the connecting pieces are three respectively.

[0018] Compared with the prior art, the present invention provides an end-expandable seam pipe anchor rod, which has the following beneficial effects:

[0019] 1. The utility model provides an expansion head that cooperates with the anchor hole at the front end of the anchor rod. When in use, when the expansion head moves to the right under the force of the seam pipe, the conical wedge iron expands the wedge-shaped expansion piece, and the outer diameter of the wedge-shaped expansion piece increases significantly, thereby increasing the friction between the wedge-shaped expansion piece and the inner wall of the anchor hole, thereby increasing the anchoring force of the seam pipe anchor rod.

[0020] 2. The utility model is provided with a first opening which passes through the upper side of the tube body in a horizontal direction. Two parallel retaining rings are welded at intervals on the outer side surface of the right end portion of the tube body. A tray is passed through the tube body on the left side of the retaining ring. When in use, the two retaining rings cooperate with the tray to enhance the anchoring force. The two retaining rings indicate the height of the anchor sprayed concrete to ensure the thickness of the anchor sprayed concrete. The overall structure is simple, easy to use, and suitable for a variety of anchoring environments.

[0021] 3. The utility model has a wavy structure on the outer surface of the wedge-shaped expansion piece. When used, the wavy structure can increase the anchoring force with the drill hole and significantly improve the anchoring force of the seam pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention:

[0023] Figure 1 This is a schematic diagram of the top structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the enlarged structure of the tapered wedge;

[0025] Figure 3 Schematic diagram of the cross-sectional structure of the tapered wedge;

[0026] Figure 4 It is a schematic diagram of the enlarged structure of a single wedge-shaped expansion piece;

[0027] Figure 5 This is a schematic diagram of the enlarged structure of the connecting piece.

[0028] Indicated in the figure: 1. Tube body; 11. First opening; 2. Retaining ring; 3. Conical tube head; 31. Second opening; 4. Expansion head; 41. Conical wedge; 411. Columnar connecting block; 412. Strip groove; 413. Circular groove; 42. Wedge-shaped expansion piece; 421. Wave-shaped structure; 422. Arc-shaped notch; 43. Connecting blade; 431. End cap; 432. Connecting piece; 44. Booster spring; 45. Plastic clamp. DETAILED DESCRIPTION

[0029] 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.

[0030] like Figures 1 to 5 The figure shows an end-expandable seam pipe anchor bolt comprising a transverse tube body 1 with a first opening 11 extending transversely through the upper side of the tube body 1. Two parallel retaining rings 2 are welded to the outer side of the right end of the tube body 1 at intervals. A tray (not shown) is inserted through the tube body 1 to the left of the retaining rings 2. A tapered tube head 3, smaller on the left and larger on the right, is provided at the left end of the tube body 1. A second opening 31 is defined on the upper side of the tapered tube head 3, communicating with the first opening 11. An expansion head 4 is provided on the left side of the tapered tube head 3.

[0031] The expansion head 4 comprises a tapered wedge 41, larger on the left and smaller on the right. Wedge-shaped expansion plates 42 wrap around the outer periphery of the tapered wedge 41. Wedge-shaped expansion plates 42 are fixedly connected to connecting blades 43. A pressure-boosting spring 44 is located between the connecting blades 43 and the tapered wedge 41. The right end of the tapered wedge 41 is welded to the left end of the tapered tube 3. A plastic clamp 45 wraps around the outer periphery of the wedge-shaped expansion plates 42.

[0032] The outer surface of the wedge-shaped expansion piece 42 is a wave-shaped structure 421 .

[0033] The connecting blade 43 includes a circular end cap 431 on the left side. A connecting piece 432 corresponding in number to the wedge-shaped expansion piece 42 is fixed to the right of the edge of the end cap 431 . The right end of the connecting piece 432 is fixedly connected to the outer surface of the left end of the wedge-shaped expansion piece 42 .

[0034] A strip-shaped groove 412 is circumferentially embedded in the outer surface of the left end portion of the conical wedge 41 and is matched with the connecting piece 432 .

[0035] An arc-shaped notch 422 is embedded in the middle of the left end of the outer surface of the wedge-shaped expansion piece 42 to cooperate with the connecting piece 432 .

[0036] A columnar connecting block 411 is fixed to the right end of the tapered wedge 41 , and the outer surface of the columnar connecting block 411 is welded and fixed to the inner surface of the left end of the tapered pipe head 3 .

[0037] A circular groove 413 is embedded in the left end surface of the conical wedge 41 to cooperate with the right end of the booster spring 44.

[0038] A limiting protrusion (not shown in the figure, an annular protrusion) that cooperates with the boost spring 44 is fixedly provided at the center position of the right side of the end cap 431.

[0039] There are three wedge-shaped expansion pieces 42 and three connecting pieces 432 .

[0040] During use, when the expansion head 4 is forced to move to the right by the seam pipe, the conical wedge iron 41 expands the wedge-shaped expansion piece 42, significantly increasing the outer diameter of the wedge-shaped expansion piece 42. This increases the friction between the wedge-shaped expansion piece 42 and the inner wall of the anchor hole, thereby increasing the anchoring force of the seam pipe anchor. The two retaining rings 2 cooperate with the tray to enhance the anchoring force. The two retaining rings 2 indicate the height of the anchor sprayed concrete and ensure the thickness of the anchor sprayed concrete. The wavy structure 421 can increase the anchoring force with the drilled hole and significantly improve the anchoring force of the seam pipe. The overall structure is simple and easy to use, suitable for a variety of anchoring environments.

[0041] The components used in the present invention are all universal standard components or components known to those skilled in the art, and their structures and principles are well known to those skilled in the art.

[0042] It should be noted that, in this document, the directions or positional relationships indicated by the terms "first", "second", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0043] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not intended to limit the conditions under which the present invention can be implemented. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in this utility model without affecting the effects and purposes that can be achieved by the present utility model.

[0044] 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 end-expandable seam pipe anchor, characterized by: It comprises a transverse tube body, a first opening is provided transversely through the upper side of the tube body, two parallel retaining rings are welded to the outer side surface of the right end of the tube body at intervals, and a tray is passed through the tube body on the left side of the retaining ring; The left end of the tube body is provided with a tapered tube head with a smaller left side and a larger right side. A second opening communicating with the first opening is provided on the upper side of the tapered tube head, and an expansion head is provided on the left side of the tapered tube head.

2. The end-expandable seam pipe anchor according to claim 1, characterized in that: The expansion head includes a conical wedge iron with a larger left side and a smaller right side, the outer periphery of the conical wedge iron is wrapped with a wedge-shaped expansion piece, the wedge-shaped expansion piece is fixedly connected to the connecting blade, and a booster spring is provided between the connecting blade and the conical wedge iron; The right end of the tapered wedge is welded and fixed to the left end of the tapered pipe head; The outer sides of the wedge-shaped expansion pieces are wrapped with plastic clamps.

3. The end-expandable seam pipe anchor according to claim 2, characterized in that: The outer surface of the wedge-shaped expansion piece has a wavy structure.

4. The end-expandable seam pipe anchor according to claim 2, characterized in that: The connecting blade includes a circular end cap on the left side, and a connecting piece corresponding to the number of the wedge-shaped expansion pieces is fixed to the right along the edge of the end cap, and the right end of the connecting piece is fixedly connected to the outer surface of the left end of the wedge-shaped expansion piece.

5. The end-expandable seam pipe anchor according to claim 2, characterized in that: A strip-shaped groove that matches the connecting piece is embedded in the outer surface of the left end portion of the conical wedge iron in the circumferential direction.

6. The end-expandable seam pipe anchor according to claim 2, characterized in that: An arc-shaped notch cooperating with the connecting piece is embedded in the middle position of the left end portion of the outer surface of the wedge-shaped expansion piece.

7. The end-expandable seam pipe anchor according to claim 2, characterized in that: A columnar connecting block is fixedly provided on the right end portion of the tapered wedge iron, and the outer surface of the columnar connecting block is welded and fixed to the inner surface of the left end portion of the tapered tube body.

8. The end-expandable seam pipe anchor according to claim 2, characterized in that: The left end surface of the conical wedge iron is embedded with a circular groove that matches the right end of the boosting spring.

9. The end-expandable seam pipe anchor according to claim 4, characterized in that: A limiting protrusion cooperating with the boost spring is fixedly provided at the center position of the right side surface of the end cap.

10. The end-expandable seam pipe anchor according to claim 4, characterized in that: The number of the wedge-shaped expansion pieces and the number of the connecting pieces are three respectively.

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