CN215977248U

CN215977248U - Anchoring device

Info

Publication number: CN215977248U
Application number: CN202120964442.3U
Authority: CN
Inventors: 仝霄金; 唐建政; 赵民; 魏汝明
Original assignee: JINAN INSTITUTE OF SURVEY & MAPPING
Current assignee: JINAN INSTITUTE OF SURVEY & MAPPING
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-03-08
Anticipated expiration: 2031-05-06

Abstract

The utility model relates to an anchoring device which comprises an anchor rod, wherein one end of the anchor rod, which is far away from an anchoring hole, is connected with a grouting guide assembly, and one end of the anchor rod, which is positioned in the anchoring hole, is connected with an expansion fixing assembly. The grouting guide assembly is arranged at the end part of the anchor rod, so that grout enters between the rock body and the anchor rod along the anchor rod, the structure of the grouting guide assembly is simplified, and the cost is saved; the anchor rod can be fixed in the rock body when the anchoring device enters the anchoring hole, and the anchoring device is assisted to form a temporary stable support before the grout solidifies to reach the tensile strength.

Description

Anchoring device

Technical Field

The utility model relates to the technical field of engineering support, in particular to an anchoring device suitable for a broken rock mass.

Background

The anchor rod is the most basic component of roadway support in the contemporary coal mine, and reinforces the surrounding rocks of the roadway together to realize the self-support of the surrounding rocks. The anchor rod is not only used in mines, but also in engineering technology for reinforcing main bodies of slopes, tunnels and dams. The existing anchoring device is improved on the traditional anchor rod in many aspects, for example, when anchoring is carried out, grouting holes are formed in the hollow anchor rod to conduct grouting on surrounding rock masses, and after grout is solidified, the grouting holes and the rock masses form integrated reinforcement. However, the above device needs to provide grouting holes on the anchor rods, so that the cost is high, and when the device is used for anchoring and supporting in broken rock masses, gaps among the broken rock masses are large, so that loosening is easy to occur, and stable supporting cannot be formed before slurry is solidified.

Disclosure of Invention

Aiming at the problems that the grouting holes of the existing anchoring device are complex to set and stable support is difficult to form before grout is solidified in a broken rock body, the utility model provides the anchoring device which does not set the grouting holes on the anchor rod and can stably form support with the rock body before the grout is solidified.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an anchor device, includes the stock, and the one end that is located outside the anchor hole of stock sets up slip casting direction subassembly, and the stock is located the downthehole one end of anchor and sets up the fixed subassembly of inflation. The grouting guide assembly is arranged at the end part of the anchor rod, so that grout enters between the rock body and the anchor rod along the anchor rod, the structure of the grouting guide assembly is simplified, and the cost is saved; the securing assembly may be secured within the rock body when the anchoring device enters the anchoring hole, helping the anchoring device form a temporary stable support before the grout solidifies to reach tensile strength.

Preferably, the stock outside is equipped with the sleeve, and slip casting direction subassembly is connected to sleeve one end, and the fixed subassembly of inflation is connected to the telescopic other end, and the stock passes slip casting direction subassembly, sleeve and the fixed subassembly of inflation in proper order. The sleeve enables grout to be injected between the rock body and the sleeve, and the anchor rod can be recovered after the anchoring device is stabilized.

Preferably, the grout outlet of the grout guide assembly opens between the sleeve and the anchoring hole. Grout is injected between the sleeve and the anchor rod, and the anchor rod is recovered after the grout is solidified.

Preferably, the grout outlet of the grout guide assembly opens between the bolt and the sleeve. The strength of the integrated reinforcement formed by the slurry is improved.

Preferably, the fixed subassembly of inflation includes the anchor body, and the one end that is located the anchor hole of the connection stock of anchor body sets up damping baffle on the anchor body, sets up water-swelling rubber between damping baffle and the anchor body. After the anchoring device is placed into the anchoring hole, grouting is carried out, the water-swelling rubber expands, and the damping partition plate is jacked into a broken rock body, so that the anchoring device is stable.

Preferably, the fixed subassembly of inflation still includes the expansion pipe, and the expansion pipe is hollow structure, and the one end fixed connection anchor body's of expansion pipe the other end, the other end of expansion pipe set up the screw hole, and the stock passes sleeve, anchor body and expansion pipe in proper order, and the one end setting of stock can with screw hole complex screw rod. The expansion pipe is a single-piece high-toughness steel sheet, the anchor rod drives the whole anchoring device to be pushed forwards, grouting is carried out when the expansion pipe reaches a limit position, the rubber expands when encountering water, the damping partition plate is pushed towards a broken rock body, the anchoring body is fixed and can not rotate at the moment, one end of the expansion pipe connected with the anchoring body is also fixed, the anchor rod can not be pushed forwards continuously but can rotate, the anchor rod is rotated, an acting force is applied to one end of the expansion pipe provided with a threaded hole through threads, and the expansion pipe is stressed and expanded and simultaneously pushes a nearby rock body tightly; the anchor rod can be reversely rotated and screwed out after the grout is solidified, and then the anchor rod can be recovered.

Preferably, the damping partition plates are radially arranged in the radial direction of the fixed rod piece, and the damping partition plates are perpendicular to the end face of the fixed rod piece. The counterforce of the rock body on the anchoring body is more uniform, and the stability of the anchoring body in the rock body is improved.

Preferably, the damping spacer is barb-shaped. The grabbing capacity of the damping partition plate is improved, and the anchoring device is more stable.

Preferably, slip casting direction subassembly lets press the tray including letting, lets press the tray to connect the one end that is located outside the anchor hole of stock, lets press the slip casting pipe that sets up on the tray, and the export of slip casting pipe leads to between stock and the anchor hole. The grout is injected between the rock body and the anchor rod along the axial direction of the anchor rod, so that the grouting structure is simplified.

Preferably, slip casting direction subassembly is including letting press the tray, lets press the one end that tray fixed connection sleeve is located outside the anchor hole, lets press the slip casting pipe that sets up on the tray, and the export of slip casting pipe leads to between sleeve and the anchor hole. Simplify the slip casting structure, realize that the stock is recoverable.

Preferably, the yielding tray comprises a first backing plate and a second backing plate which are oppositely arranged, an elastic cushion block is arranged between the first backing plate and the second backing plate, and the first backing plate is fixedly connected with one end of the sleeve, which is positioned outside the anchoring hole. The elastic cushion block can allow the anchoring system to have certain displacement, reduce the tensile force and protect the anchoring system.

Preferably, the elastic cushion block is a rubber cushion block. The rubber cushion block can firstly meet the requirement on elasticity, and secondly, the rubber cushion block is low in cost and easy to obtain.

The anchor rod has the advantages that the position of the grouting hole in the anchoring device is changed, the structure of the anchor rod is simplified, and the production cost is reduced; the fixing assembly is arranged at the part of the anchoring device, which is positioned in the anchoring hole, so that a stable support can be formed before the slurry is solidified, and the device is suitable for crushing rock masses; through setting up the anchor body of meeting water inflation rubber and screw thread drive's inflation pipe and playing dual anchor effect, make the stock can twist out the recovery after the thick liquid solidifies through setting up the sleeve.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a cross-sectional view of an embodiment of the present invention.

In the figure: 1. anchor rod, 2, let and press the tray, 3, slip casting pipe, 4, sleeve, 5, anchor body, 6, damping baffle, 7, expansion pipe, 8, screw rod, 9, drill bit, 10, let and press the nut, 201, backing plate one, 202, rubber cushion, 203, backing plate two.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, an anchoring device comprises a pressure yielding tray 2, a sleeve 4, an anchoring body 5 and an expansion pipe 7 which are fixedly connected in sequence, the pressure yielding tray 2, the sleeve 4, the anchoring body 5 and the expansion pipe 7 are coaxially arranged, the pressure yielding tray 2 is fixedly connected with one end of the sleeve 4 positioned outside an anchoring hole, the pressure yielding tray 2 comprises a first backing plate 201 and a second backing plate 203 which are oppositely arranged, a rubber cushion block 202 is arranged between the first backing plate 201 and the second backing plate 203, the rubber cushion block 202 allows the anchoring system to have certain displacement and reduces tension and protects the anchoring system, four rubber cushion blocks 202 are arranged and distributed at the edges of the first backing plate 201 and the second backing plate 203 in a surrounding manner, through holes are arranged in the centers of the first backing plate 201 and the second backing plate 203, a grouting pipe 3 for grouting is also arranged on the first backing plate 201 and the second backing plate 203, the grouting pipe 3 is arranged in parallel to the sleeve 4, an outlet of the grouting pipe 3 is led to the space between the sleeve 4 and the anchoring hole, the grout enters between the sleeve 4 and the rock body along the axial direction of the sleeve 4, and the grouting structure is simplified. Sleeve 4 be located the one end of the columniform anchor body 5 of one end fixed connection in the anchor hole, 5 axle centers of anchor body set up the through-hole, connect damping baffle 6 through meeting water inflation rubber on the outer disc of anchor body 5, provide the temporary stabilization before the thick liquid solidifies and strut, simultaneously in order to improve anchor body 5's grasping ability, damping baffle 6 sets up to barb-like, damping baffle 6 sets up perpendicular anchor body 5's terminal surface, damping baffle 6 is radial distribution in anchor body 5's radial, make the reaction force evenly distributed of the rock mass that anchor body 5 received, and the stability is improved. The other end fixed connection expansion pipe 7's of anchor 5 one end, expansion pipe 7 is monolithic high tenacity steel sheet, and expansion pipe 7 is hollow structure, and expansion pipe 7's the other end sets up the screw hole. The anchoring device further comprises an anchor rod 1, one end of the anchor rod 1 is connected with one end of a screw rod 8, and a drill bit 9 is arranged at the other end of the screw rod 8. Stock 1 passes in proper order and lets through-hole, sleeve 4, the through-hole and the expansion pipe 7 of pressing tray 2, sets up the screw rod 8 at stock 1 one end and the screw hole cooperation of expansion pipe 7, and the other end of stock 1 compresses tightly on letting pressing tray 2 through letting press nut 10.

The working process of the utility model is that one end of the anchoring device, which is provided with the anchoring body 5 and the expansion pipe 7, is placed into an anchoring hole of a rock body, the anchor rod 1 is rotated, the anchor rod 1 is pushed forwards by a drill bit, and grouting is carried out when the anchor rod is pushed to the limit position; grout is injected between the sleeve 4 and the rock body through a grouting pipe 3 arranged on the yielding tray 2, the grout contacts water-swelling rubber between the anchoring body 5 and the damping partition plate 6, the water-swelling rubber swells and pushes the radially distributed damping partition plates 6 into the rock body, at the moment, the anchoring body 5 is fixed in position and cannot rotate, the anchor rod 1 is fixed in position but can rotate, the anchor rod 1 is rotated, one end of the swelling pipe 7 connected with the anchoring body 5 is fixed, one end connected with the screw rod 8 is stressed and expanded under the action of threads and pushes up the rock body nearby, and then the anchor rod 1 is fixed through a yielding nut 10; and after the slurry is solidified to the tensile strength, loosening the yielding nut 10, and reversely rotating the anchor rod 1 to take out the anchor rod, thereby realizing recovery.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an anchoring device, its characterized in that, includes stock (1), the one end that is located outside the anchor hole of stock (1) sets up slip casting direction subassembly, stock (1) is located the downthehole one end of anchor sets up the fixed subassembly of inflation, the fixed subassembly of inflation includes anchor body (5), anchor body (5) are connected being located of stock (1) the downthehole one end of anchor, set up damping baffle (6) on anchor body (5), damping baffle (6) with it meets water inflation rubber to set up between anchor body (5).

2. The anchoring device as recited in claim 1, characterized in that a sleeve (4) is provided outside the anchor rod (1), one end of the sleeve (4) is connected with the grouting guide component, the other end of the sleeve (4) is connected with the expansion fixing component, and the anchor rod (1) passes through the grouting guide component, the sleeve (4) and the expansion fixing component in sequence.

3. An anchoring device according to claim 2, characterised in that the grout outlet of the grout guide assembly opens between the sleeve (4) and the anchoring hole.

4. Anchoring device according to claim 3, characterised in that the grout outlet of the grout guide assembly also opens between the bolt (1) and the sleeve (4).

5. The anchoring device as claimed in claim 1 or 2 or 3 or 4, wherein the expansion fixing component further comprises an expansion pipe (7), the expansion pipe (7) is of a hollow structure, one end of the expansion pipe (7) is fixedly connected with the other end of the anchoring body (5), the other end of the expansion pipe (7) is provided with a threaded hole, the anchor rod (1) sequentially penetrates through the anchoring body (5) and the expansion pipe (7), and the anchor rod (1) is provided with a screw rod (8) capable of being matched with the threaded hole.

6. The anchoring device of claim 1, wherein the grouting guide assembly comprises a yielding tray (2), the yielding tray (2) is connected with one end of the anchor rod (1) which is positioned outside the anchoring hole, a grouting pipe (3) is arranged on the yielding tray (2), and an outlet of the grouting pipe (3) is communicated between the anchor rod (1) and the anchoring hole.

7. The anchoring device of claim 3, wherein the grouting guide assembly comprises a yielding tray (2), the yielding tray (2) is fixedly connected with one end of the sleeve (4) positioned outside the anchoring hole, a grouting pipe (3) is arranged on the yielding tray (2), and an outlet of the grouting pipe (3) is communicated between the sleeve (4) and the anchoring hole.

8. The anchoring device as claimed in claim 7, wherein the yielding tray (2) comprises a first backing plate (201) and a second backing plate (203) which are oppositely arranged, an elastic cushion block is arranged between the first backing plate (201) and the second backing plate (203), and the first backing plate (201) is fixedly connected with one end of the sleeve (4) which is positioned outside the anchoring hole.

9. Anchoring device according to claim 5, characterised in that the damping diaphragms (6) are arranged radially in the radial direction of the anchor rod (1), the damping diaphragms (6) being perpendicular to the end face of the anchor rod (1).