Tapered iron welding-free type combined anchor rod

Abstract

The utility model relates to the field of supporting parts, in particular to a wedge welding-free combined anchor rod which comprises a rod body, an opening is formed in the side face of the rod body, a necking rod head is arranged at the front end of the rod body, a pair of welding-free wedges are arranged on the front side of the necking rod head, and sawtooth-shaped barbs are machined on the outer side faces of the welding-free wedges. A wedge-shaped nut with a large front part and a small rear part is slidably clamped between the welding-free tapered irons, an inner pull rod is arranged on the front side of the wedge-shaped nut, external threads are arranged at two ends of the inner pull rod, the front end part of the inner pull rod is in threaded connection with the wedge-shaped nut, and the rear end part of the inner pull rod extends out of the rod body and is in threaded connection with a blind hole nut; a tray is also arranged on the inner pull rod between the blind hole nut and the rear end part of the rod body; and an anti-slip structure is also arranged in the rod body on the inner side of the tray. The anchor rod has the advantages that the anchor rod is provided with the sawtooth-shaped barbs, anchoring agents are not applied to the whole anchor rod, instant anchoring is achieved, the anchor rod has the advantages of being convenient to install and small in leakage, and the safety performance of roadway construction can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of supporting components, in particular to an inclined iron welding-free combined anchor rod. Background Art

[0002] In construction tunnels such as culverts, mines, and subways, anchor support methods are widely used to prevent the falling of surrounding rocks and protect the lives of on-site construction workers. The seam pipe anchor is the main component for support. The general structure includes a rod body, which is a hollow tubular structure with an opening on the side, and a retaining ring is fixed on the outer surface of the tail end of the rod body. The Chinese utility model patent with application number 202123292758.1 discloses a new type of end expansion combined anchor rod, which adds an end expansion mechanism, a threaded steel anchor rod body and an anti-drop mechanism, effectively increasing the anchoring force and its own strength; it is simple to operate, easy to use, and suitable for a variety of construction sites.

[0003] The end expansion combined anchor rod of the above structure can play the role of anchoring support. However, the expansion mechanism of the front end is not provided with sawtooth barbs on the outside, which is not conducive to enhancing the friction with the inner wall of the borehole, so that it is restricted in use. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides an inclined iron welding-free combined anchor rod, which can solve the problem that no serrated barbs are arranged on the outer side of the expansion mechanism at the front end of the seam tube, which is not conducive to enhancing the friction with the inner wall of the borehole.

[0005] To achieve the above object, the utility model provides the following technical solutions: an inclined iron welding-free combined anchor rod, comprising a rod body, the rod body is a hollow tubular structure, and an opening is provided on the side, and a shrinking rod head is provided at the front end of the rod body, and the shrinking rod head is a cylindrical tube structure with a side opening;

[0006] A pair of welding-free oblique irons are arranged on the front side of the shrinking rod head, and the outer side surfaces of the welding-free oblique irons are processed with sawtooth-shaped barbs. A connecting portion is arranged on the rear side of the welding-free oblique irons, and the connecting portion extends into the shrinking rod head and is fixedly connected to the shrinking rod head through rivets;

[0007] A wedge-shaped nut with a larger front and a smaller rear can be slidably clamped between the welding-free oblique irons, an inner pull rod is provided on the front side of the wedge nut, and both ends of the inner pull rod are provided with external threads, the front end of the inner pull rod is threadedly connected with the wedge nut, and the rear end of the inner pull rod extends out of the rod body and is threadedly connected with a blind hole nut;

[0008] A tray is also provided on the inner pull rod between the blind hole nut and the rear end of the rod body;

[0009] An anti-slip structure is also provided in the rod body inside the tray.

[0010] As a preferred technical solution, the anti-slip structure is a support member arranged in the upper and lower spaces of the inner pull rod at the outer end.

[0011] As a preferred technical solution, the support members are symmetrical up and down, and each support member is bent from an elastic steel sheet into an arc-shaped structure that is convex upward and has a cavity in the middle. The curvature matches the curvature of the rod body, and a strip through hole is axially provided in the middle position of the inner wall of the arc structure. The support member is welded and fixed to the inner wall of the rod body.

[0012] As a preferred technical solution, both sides of the wedge-shaped nut are provided with inclined surfaces that cooperate with the welding-free inclined iron.

[0013] As a preferred technical solution, the tray is circular, and its outer diameter is larger than the outer diameter of the rod.

[0014] As a preferred technical solution, the outer diameter of the inner end portion of the wedge-shaped nut is the same as the outer diameter of the tapered rod head.

[0015] Compared with the prior art, the utility model provides an inclined iron welding-free combined anchor rod, which has the following beneficial effects:

[0016] 1. The utility model processes serrated barbs on the outer side of the welding-free bevel iron, and a wedge-shaped nut with a larger front and a smaller rear can be slidably clamped between the welding-free bevel irons. The rear end of the wedge-shaped nut is threadedly connected to the front end of the inner pull rod in the rod body, and the rear end of the inner pull rod extends out of the rod body and is threadedly connected with a blind hole nut. When in use, the rod body is inserted into the drilled hole, and then the blind hole nut on the rear side is screwed, so that the wedge nut can be pulled, so that the welding-free bevel iron can expand outward and fit tightly against the inner wall of the drilled hole. The serrated barbs can increase the friction with the inner wall of the drilled hole, thereby increasing the anchoring force of the rod body. The tray can play a supporting role on the outside. Anchoring agent is not used as a whole, and instant anchoring is achieved. It has the advantages of convenient installation and small leakage, and can significantly improve the safety performance of tunnel construction.

[0017] 2. The utility model uses an anti-slip structure as a support member arranged in the upper and lower spaces of the inner pull rod at the outer end. The support members are symmetrical up and down. Each support member is formed by bending an elastic steel sheet into an arc-shaped structure that is convex upward and has a cavity in the middle. The curvature matches the curvature of the rod body, and a strip through hole is axially arranged in the middle position of the inner wall of the arc structure. The support member is welded and fixed to the inner wall of the rod body. When in use, the inner wall of the drilled hole squeezes the rod body so that the inner side of the support member can be tightly attached to the outer surface of the inner pull rod, which is more conducive to the overall firmness of the rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention:

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of the anti-drop structure and the rod body;

[0022] Indications in the figure: 1. Wedge nut; 2. Welding-free bevel iron; 21. Connecting part; 3. Rod body; 4. Shrink rod head; 5. Rivet; 6. Anti-drop structure; 61. Support member; 62. Strip through hole; 7. Inner pull rod; 71. Tray; 8. Blind hole nut. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0024] like Figures 1 to 3 As shown, a weld-free combined anchor rod of an inclined iron includes a rod body 3, the rod body 3 is a hollow tubular structure, and an opening is provided on the side, and a constricted rod head 4 is provided at the front end of the rod body 3, and the constricted rod head 4 is a cylindrical tube structure with a side opening. A pair of weld-free inclined irons 2 are provided at the front side of the constricted rod head 4, and the outer side of the weld-free inclined iron 2 is processed with a sawtooth barb, and a connecting portion 21 is provided at the rear side of the weld-free inclined iron, and the connecting portion 21 extends into the constricted rod head 4 and is fixedly connected to the constricted rod head 4 by rivets. A wedge-shaped nut 1 with a larger front and a smaller rear can be slidably clamped between the weld-free inclined irons 2, and an inner tie rod 7 is provided at the front side of the wedge-shaped nut 1, and both ends of the inner tie rod 7 are provided with external threads, and the front end of the inner tie rod 7 is threadedly connected to the wedge-shaped nut 1, and the rear end of the inner tie rod 7 extends out of the rod body 3 and is threadedly connected with a blind hole nut 8. A tray 71 is also provided on the inner tie rod 7 between the blind hole nut 8 and the rear end of the rod body 3. An anti-slip structure 6 is also provided in the rod body 3 inside the tray 71.

[0025] The anti-slip structure 6 is a support member 61 disposed in the upper and lower spaces of the inner pull rod 7 at the outer end. The support members 61 are symmetrical up and down, and each support member 61 is bent and pressed by an elastic steel sheet into an arc-shaped structure with a convex upper portion and a cavity in the middle, and the arc matches the arc of the rod body 3, and a strip-shaped through hole 62 is axially provided in the middle position of the inner side wall of the arc-shaped structure, and the support member 61 is welded and fixed to the inner wall of the rod body 3.

[0026] Both sides of the wedge nut 1 are provided with inclined surfaces which cooperate with the welding-free inclined iron 2.

[0027] The tray 71 is circular, and its outer diameter is larger than the outer diameter of the rod body 3 .

[0028] The outer diameter of the inner end of the wedge nut 1 is the same as the outer diameter of the shrinking rod head 4.

[0029] When in use, the rod body 3 is inserted into the drilled hole, and then the blind hole nut 8 at the rear side is screwed, so that the wedge nut 1 can be pulled, so that the welding-free inclined iron can expand outward and close to the inner wall of the drilled hole. The sawtooth barb can increase the friction with the inner wall of the drilled hole, thereby increasing the anchoring force of the rod body 3, and the tray 71 can play a supporting role on the outside. The inner wall of the drilled hole squeezes the rod body 3, so that the inner side of the support member 61 can be close to the outer surface of the inner pull rod 7, which is more conducive to the overall firmness of the rod body 3.

[0030] The components used in the present invention are all common 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.

[0031] It should be noted that, in this article, 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 drawings, and are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] 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 used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inclined iron welding-free combined anchor rod, comprising a rod body, the rod body being a hollow tubular structure with an opening on the side, characterized in that: The front end of the rod body is provided with a tapered rod head, which is a cylindrical tube structure with a side opening; A pair of welding-free oblique irons are arranged on the front side of the shrinking rod head, and the outer side surfaces of the welding-free oblique irons are processed with sawtooth-shaped barbs. A connecting portion is arranged on the rear side of the welding-free oblique irons, and the connecting portion extends into the shrinking rod head and is fixedly connected to the shrinking rod head through rivets; A wedge-shaped nut with a larger front and a smaller rear can be slidably clamped between the welding-free oblique irons, an inner pull rod is provided on the front side of the wedge nut, and both ends of the inner pull rod are provided with external threads, the front end of the inner pull rod is threadedly connected with the wedge nut, and the rear end of the inner pull rod extends out of the rod body and is threadedly connected with a blind hole nut; A tray is also provided on the inner pull rod between the blind hole nut and the rear end of the rod body; An anti-slip structure is also provided in the rod body inside the tray.

2. The inclined iron welding-free combined anchor rod according to claim 1, characterized in that: The anti-slip structure is a support member arranged in the upper and lower spaces of the inner pull rod at the outer end.

3. The inclined iron welding-free combined anchor rod according to claim 2 is characterized in that: The support members are symmetrical up and down, and each support member is bent from an elastic steel sheet into an arc-shaped structure that is convex upward and has a cavity in the middle. The curvature matches the curvature of the rod body, and a strip through hole is axially provided in the middle position of the inner wall of the arc-shaped structure. The support member is welded and fixed to the inner wall of the rod body.

4. The inclined iron welding-free combined anchor rod according to claim 1, characterized in that: The wedge-shaped nut has inclined surfaces on both sides that match the welding-free inclined iron.

5. The inclined iron welding-free combined anchor rod according to claim 1, characterized in that: The tray is circular, and its outer diameter is larger than the outer diameter of the rod.

6. The inclined iron welding-free combined anchor rod according to claim 1, characterized in that: The outer diameter of the inner end portion of the wedge-shaped nut is the same as the outer diameter of the shrinking rod head.

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