CN216198200U

CN216198200U - Self-drilling type hollow grouting anchor rod

Info

Publication number: CN216198200U
Application number: CN202122442805.XU
Authority: CN
Inventors: 邢乐
Original assignee: Guangxi Kaixuan Construction Co ltd
Current assignee: Guangxi Kaixuan Construction Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-04-05
Anticipated expiration: 2031-10-11

Abstract

The utility model provides a self-drilling hollow grouting anchor rod, which comprises: the grouting anchor rod, the anchor rod body, the grouting plug, the base plate, the nut, the connecting sleeve, the drill bit, the sleeve, the intermediate plate and the reinforcing rib; an anchor rod body is arranged on the grouting anchor rod; the upper end of the anchor rod body is provided with a backing plate; a grouting plug is arranged on the lower side of the base plate; the upper side of the backing plate is provided with a nut, and the nut is connected with the anchor rod body in a threaded mode; a connecting sleeve is arranged between the anchor rod bodies and is connected with the anchor rod bodies in a thread manner; the lower extreme of the stock body is provided with the drill bit, and the drill bit is connected through the screw thread mode with the stock body. The self-drilling hollow grouting anchor rod has the advantages that the structural design is reasonable, the anchor rod body can be lengthened to the designed depth while drilling, and the anchor rod body is positioned in the middle of a drilled hole, so that the problems and the defects of the conventional device are effectively solved.

Description

Self-drilling type hollow grouting anchor rod

Technical Field

The utility model relates to the technical field of anchor rods, in particular to a self-drilling hollow grouting anchor rod.

Background

Complicated geological conditions such as weak surrounding rock, fault broken zones, high ground stress and large deformation generally exist in various underground projects, great difficulty is brought to rock anchor construction, and the common anchor rod cannot be used particularly under the conditions of serious collapse and need of a super-long anchor rod.

For the above reasons, the bulletin number: CN105888709B discloses a self-drilling grouting anchor rod, which comprises at least one rod body, a drill bit and a grout stop plug, wherein the drill bit and the grout stop plug are respectively arranged at two ends of the rod body, a hollow cavity is arranged in the rod body in a penetrating manner, cleaning holes are arranged in the circumferential direction of the rod body, and the cleaning holes are communicated with the hollow cavity and communicated with the inside and the outside of the rod body; a groove is further penetrated through the outer side of the rod body and is arranged along the axial direction of the rod body; the drill bit is arranged at one end of the rod body, the rod body is in driving connection with a drilling machine, and the rod body can drive the drill bit to rotate; the grout stop plug is arranged at the other end of the rod body and can seal the drilled hole, a grouting opening is formed in the grout stop plug and communicated with the groove, and the grouting opening and the groove can be communicated with the inside and the outside of the drilled hole. The utility model saves the anchoring process and effectively improves the efficiency of anchor rod construction.

But above-mentioned self-drilling formula slip casting stock has certain defect, connects the extension back at a plurality of stock, and length increases, can make the stock can not be in the centre of drilling, influences the anchor effect, can not satisfy people's user demand.

In view of this, carry out research improvement to current problem, provide a self-drilling formula cavity slip casting stock, have structural design reasonable, make the stock physical stamina bore the while extension to the degree of depth of design, realize the stock body and lie in the middle advantage of drilling simultaneously, aim at through this technique, reach the purpose of solving the problem and improving practical value nature.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a self-drilling hollow grouting anchor rod to solve the above problems and deficiencies of the prior art.

In order to achieve the purpose, the utility model provides a self-drilling hollow grouting anchor rod, which is achieved by the following specific technical means:

a self-drilling hollow grout anchor comprising: the grouting anchor rod, the anchor rod body, the grouting plug, the base plate, the nut, the connecting sleeve, the drill bit, the sleeve, the intermediate plate and the reinforcing rib; an anchor rod body is arranged on the grouting anchor rod; the upper end of the anchor rod body is provided with a backing plate; a grouting plug is arranged on the lower side of the base plate; the upper side of the backing plate is provided with a nut, and the nut is connected with the anchor rod body in a threaded mode; a connecting sleeve is arranged between the anchor rod bodies and is connected with the anchor rod bodies in a thread manner; the drill bit is arranged at the lower end of the anchor rod body and is connected with the anchor rod body in a threaded mode; the connecting sleeve is composed of a sleeve, an intermediate plate and a reinforcing rib.

As a further optimization of the technical scheme, the self-drilling hollow grouting anchor rod is characterized in that the outer side of the anchor rod body is provided with continuous threads, and the anchor rod body is of a hollow structure.

As a further optimization of the technical scheme, the sleeve of the self-drilling hollow grouting anchor rod is internally provided with an internal thread, and the internal thread is matched with the thread on the outer side of the anchor rod body.

As a further optimization of the technical scheme, the centering plate of the self-drilling hollow grouting anchor rod is provided with a plurality of arc-shaped notches, and the notches are in an annular array.

As a further optimization of the technical scheme, the self-drilling hollow grouting anchor rod is characterized in that the upper side of the drill bit is provided with internal threads, the drill bit is provided with a plurality of through holes, and the through holes are communicated with the inner cavity of the anchor rod body.

As a further optimization of the technical scheme, the cushion plate of the self-drilling hollow grouting anchor rod has a rectangular overlook appearance characteristic, and a circular through hole is formed in the center of the cushion plate.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the continuous threads are arranged on the outer side of the anchor rod body, the anchor rod body is of a hollow structure, so that a drill bit, a connecting sleeve and a nut can be conveniently installed, the anchor rod can be cut and connected and lengthened at will, and the hollow structure can be used as a grouting channel.

2. According to the utility model, the inner threads are arranged in the sleeve and matched with the threads on the outer side of the anchor rod body, so that the two anchor rod bodies are conveniently connected, and the anchor rod body can drill and simultaneously lengthen to the designed depth.

3. According to the anchor rod, the plurality of arc-shaped notches are arranged on the middle plate and are in an annular array, so that the anchor rod body is positioned in the middle of the drill hole.

4. The self-drilling hollow grouting anchor rod has the advantages that the structural design is reasonable, the anchor rod body can be lengthened to the designed depth while drilling, and the anchor rod body is positioned in the middle of a drilled hole, so that the problems and the defects in the background art are effectively solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of an axial structure of the present invention;

FIG. 2 is a schematic view of a connecting sleeve structure of the present invention;

fig. 3 is a schematic view of the structure of the backing plate of the present invention.

In the figure: the grouting anchor rod comprises a grouting anchor rod 1, an anchor rod body 2, a grouting plug 3, a base plate 4, a nut 5, a connecting sleeve 6, a drill bit 7, a sleeve 601, a centering plate 602 and reinforcing ribs 603.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

It is to be noted that, in the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, for example, as being fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the present invention provides a specific technical embodiment of a self-drilling hollow grouting anchor rod:

a self-drilling hollow grout anchor comprising: the grouting anchor rod comprises a grouting anchor rod 1, an anchor rod body 2, a grouting plug 3, a base plate 4, a nut 5, a connecting sleeve 6, a drill bit 7, a sleeve 601, a middle plate 602 and reinforcing ribs 603; the grouting anchor rod 1 is provided with an anchor rod body 2; the upper end of the anchor rod body 2 is provided with a backing plate 4; a grouting plug 3 is arranged on the lower side of the backing plate 4; the upper side of the backing plate 4 is provided with a nut 5, and the nut 5 is connected with the anchor rod body 2 in a threaded mode; a connecting sleeve 6 is arranged between the anchor rod bodies 2, and the connecting sleeve 6 is connected with the anchor rod bodies 2 in a thread mode; the lower end of the anchor rod body 2 is provided with a drill bit 7, and the drill bit 7 is connected with the anchor rod body 2 in a thread mode; the connecting sleeve 6 is composed of a sleeve 601, a middle plate 602 and a reinforcing rib 603.

Specifically, as shown in fig. 1, the outside of the anchor rod body 2 is provided with continuous threads, and the anchor rod body 2 is of a hollow structure, so that a drill bit 7, a connecting sleeve 6 and a nut 5 can be conveniently installed, the connection and lengthening can be realized by arbitrary cutting, and the hollow structure can be used as a grouting channel.

Specifically, as shown in fig. 2, an internal thread is provided inside the sleeve 601, and the internal thread is matched with the thread on the outer side of the anchor rod body 2, so that the two anchor rod bodies 2 are conveniently connected, and the anchor rod body 2 can be extended to a designed depth while drilling.

Specifically, as shown in fig. 2, a plurality of arc-shaped notches are formed in the centering plate 602, and the notches are in an annular array, so that the anchor rod body 2 is positioned in the middle of the drilled hole.

Specifically, as shown in fig. 1, an internal thread is provided on the upper side of the drill bit 7, and a plurality of through holes are provided on the drill bit, and the through holes are communicated with the inner cavity of the bolt body 2, so that the bolt 1 can penetrate various rocks with strong penetrating power, and the bolt 1 as a drill rod can be grouted from inside to outside without being pulled out.

Specifically, as shown in fig. 3, the cushion plate 4 has a rectangular shape in a top view, and the center of the cushion plate 4 is provided with a circular through hole, so that the cushion plate can bear larger surrounding rock stress.

The method comprises the following specific implementation steps:

when the self-drilling hollow grouting anchor rod is used, the outer side of the anchor rod body 2 is provided with continuous threads, the anchor rod body 2 is of a hollow structure, a drill bit 7, a connecting sleeve 6 and a nut 5 are convenient to install and can be cut and connected and lengthened randomly, the hollow structure can be used as a grouting channel, a sleeve 601 of the connecting sleeve 6 is convenient to connect the two anchor rod bodies 2, the anchor rod bodies 2 can be lengthened to the designed depth while drilling, the middle plate 602 realizes that the anchor rod bodies 2 are positioned in the middle of a drilled hole, a grouting plug 3 enables grouting to be kept at a certain pressure to fully fill surrounding rock gaps, a backing plate 4 can bear larger surrounding rock stress, the nut 5 can transmit the surrounding rock stress to the backing plate 4 in a concentrated manner, the drill bit 7 has stronger penetrating power, the grouting anchor rod 1 can penetrate various rocks, the grouting anchor rod 1 serving as a drill rod does not need to be pulled out, grouting is carried out from the inside to the outside, and the self-drilling hollow grouting anchor rod, have structural design rationally, make the stock physical stamina limit drilling extension to the degree of depth of design, realize the stock body simultaneously and be located the advantage in the middle of the drilling, satisfied people's user demand.

In summary, the following steps: according to the self-drilling type hollow grouting anchor rod, continuous threads are arranged on the outer side of the anchor rod body, the anchor rod body is of a hollow structure, a drill bit, a connecting sleeve and a nut are convenient to install, the hollow structure can be cut and connected and lengthened at will, and the hollow structure can be used as a grouting channel; the inner threads are arranged in the sleeve and matched with the threads on the outer sides of the anchor rod bodies, so that the two anchor rod bodies can be conveniently connected, and the anchor rod body can drill and simultaneously lengthen to the designed depth; a plurality of arc-shaped notches are formed in the middle plate and are in an annular array, so that the anchor rod body is positioned in the middle of the drilled hole; through the improvement of the self-drilling hollow grouting anchor rod, the self-drilling hollow grouting anchor rod has the advantages that the structural design is reasonable, the body of the anchor rod can be lengthened to the designed depth while drilling, and meanwhile, the anchor rod body is positioned in the middle of a drilled hole, so that the problems and the defects in the background art are effectively solved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A self-drilling hollow grout anchor comprising: the grouting anchor rod comprises a grouting anchor rod (1), an anchor rod body (2), a grouting plug (3), a base plate (4), a nut (5), a connecting sleeve (6), a drill bit (7), a sleeve (601), a middle plate (602) and reinforcing ribs (603); the method is characterized in that: the grouting anchor rod (1) is provided with an anchor rod body (2); a base plate (4) is arranged at the upper end of the anchor rod body (2); a grouting plug (3) is arranged on the lower side of the backing plate (4); the upper side of the backing plate (4) is provided with a nut (5), and the nut (5) is connected with the anchor rod body (2) in a threaded mode; a connecting sleeve (6) is arranged between the anchor rod bodies (2), and the connecting sleeve (6) is connected with the anchor rod bodies (2) in a thread mode; the lower end of the anchor rod body (2) is provided with a drill bit (7), and the drill bit (7) is connected with the anchor rod body (2) in a threaded mode; the connecting sleeve (6) is composed of a sleeve (601), a middle plate (602) and a reinforcing rib (603).

2. A self drilling, hollow grouting bolt according to claim 1, characterised in that: the outside of the anchor rod body (2) is provided with continuous threads, and the anchor rod body (2) is of a hollow structure.

3. A self drilling, hollow grouting bolt according to claim 1, characterised in that: the inside of sleeve (601) is provided with the internal thread, just the internal thread cooperatees with the screw thread of the stock body (2) outside.

4. A self drilling, hollow grouting bolt according to claim 1, characterised in that: be provided with a plurality of arc breachs on middle board (602), just the breach is annular array.

5. A self drilling, hollow grouting bolt according to claim 1, characterised in that: the upside of drill bit (7) is provided with the internal thread, and is provided with a plurality of through-holes on the drill bit, and the through-hole is linked together with the inner chamber of stock body (2).

6. A self drilling, hollow grouting bolt according to claim 1, characterised in that: the overlooking appearance characteristic of the backing plate (4) is of a rectangular structure, and a circular through hole is formed in the center of the backing plate (4).