CN219280692U

CN219280692U - Slope protection anchor rod

Info

Publication number: CN219280692U
Application number: CN202223122952.XU
Authority: CN
Inventors: 陈宇航; 汪文波; 赖计学
Original assignee: China MCC17 Group Co Ltd
Current assignee: China MCC17 Group Co Ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-06-30
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses a slope protection anchor rod which comprises an anchor head and an anchor rod body, wherein the periphery of the anchor rod body is wrapped with a cement cartridge, the outer surface of the cement cartridge is wrapped with a sealing layer, the front end of the anchor rod body is fixedly connected with the anchor head, a base plate is arranged at the position, close to the tail end, of the anchor rod body, the periphery of the anchor rod body at the front end of the base plate is sleeved with a sealing sleeve, the rear end of the base plate is provided with a nut, and the anchor rod body is provided with external threads matched with the nut. The cement cartridge is internally provided with a water-immersed cement anchoring agent, the cement cartridge is coated with an anchor rod body in an annular circumferential direction, the cement cartridge is expanded in volume, enlarged in diameter and improved in strength after being immersed in water, and the anchor rod body is wrapped and surrounded to form an integral structure and is used for tightly filling an anchor hole to generate anchoring force. The end part of the anchor rod body is provided with a backing plate and a nut, which play a role in supporting the end part under stress. The anchor rod is sealed by an outer sealing sleeve, so that the cement cartridge is prevented from being wetted and disabled.

Description

Slope protection anchor rod

Technical Field

The utility model belongs to the field of highway engineering construction, and is suitable for road slope protection and tunnel excavation supporting construction.

Background

In roadbed slope protection and tunnel excavation supporting construction, anchor bolt supporting is a common reinforcing supporting mode, wherein a cement cartridge anchor bolt is used as one of bonding anchor bolts and is commonly used for slope reinforcing protection and tunnel primary supporting. The cement medicine stock that adopts in the past, its technological process is many, installation rate is slow, the operation security is poor, is unfavorable for promoting efficiency of construction and safe in utilization, and the stock is the unable reliable anchor of isodiametric structure simultaneously, influences the quality and the safety of support, anchor process construction.

Disclosure of Invention

The utility model aims to solve the problem that the existing slope protection anchor rod cannot be reliably anchored, and provides the slope protection anchor rod.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a slope protection stock, includes anchor head and stock body, the periphery of stock body is wrapped up in and is covered with the cement cartridge, the surface parcel of cement cartridge has the sealing layer, the front end and the anchor head fixed connection of stock body, the stock body is close to tail end position and is provided with the backing plate, the sealing sleeve has been cup jointed to the stock body periphery of backing plate front end, the backing plate rear end is provided with the nut, be provided with nut complex external screw thread on the stock body.

Preferably, the outer section of the cement cartridge is circular.

Preferably, the sealing sleeve is a threaded rubber sealing sleeve.

Preferably, the cross section of the backing plate is square or round.

Preferably, the anchor head is fixedly connected with the anchor rod body.

Preferably, the anchor head is conical, and the outer diameter of the tail of the anchor head is the same as the outer diameter of the sealing layer.

Preferably, barbs are circumferentially arranged on the outer surface of the anchor head.

Preferably, the section of the anchor rod body is elliptical and has a variable diameter structure in the length direction.

Preferably, the number of the variable diameter sections of the shape of the anchor body is greater than 3.

Preferably, the cement cartridge contains a water-immersed cement anchoring agent.

Compared with the prior art, the utility model provides a slope protection anchor rod, which has the following beneficial effects:

1. the cement cartridge is internally provided with a water-immersed cement anchoring agent, the cement cartridge is coated with an anchor rod body in an annular circumferential direction, the cement cartridge is expanded in volume, enlarged in diameter and improved in strength after being immersed in water, and the anchor rod body is wrapped and surrounded to form an integral structure and is used for tightly filling an anchor hole to generate anchoring force. The anchor rod body is provided with a sealing sleeve of thread rubber, and plays a role in sealing the anchor hole. The end part of the anchor rod body is provided with a backing plate and a nut, which play a role in supporting the end part under stress. The anchor rod is sealed by an outer sealing sleeve, so that the cement cartridge is prevented from being wetted and disabled.

2. The anchor hole is cylindrical, the cross section of the anchor rod body is elliptical, the diameter of the anchor rod body is changed along the length direction, and the irregular structure ensures that the amount of the immersed cement anchoring agent wrapped on the anchor rod body is irregular, so that the expansion size and the expansion strength are slightly different, certain difference exists on the basis of ensuring consistency, the friction force is locally improved, and the comprehensive anchoring effect is more remarkable.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

fig. 3 is a cross-sectional view of the present utility model.

In the figure: 1. an anchor head; 2. cement cartridge; 3. an anchor body; 4. a nut; 5. a backing plate; 6. sealing sleeve; 7. and (3) a sealing layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Example 1

The utility model provides a slope protection stock, includes anchor head 1 and stock body 3, the periphery of stock body 3 is wrapped up in and is covered with cement cartridge 2, the surface parcel of cement cartridge 2 has sealing layer 7, the front end and the anchor head 1 fixed connection of stock body 3, stock body 3 is close to tail end position and is provided with backing plate 5, the seal cover 6 has been cup jointed to the stock body 3 periphery of backing plate 5 front end, backing plate 5 rear end is provided with nut 4, be provided with nut 4 complex external screw thread on the stock body 3. The external section of the cement roll 2 is round. The sealing sleeve 6 is a threaded rubber sealing sleeve. The cross section of the backing plate 5 is square. The anchor head 1 is fixedly connected with the anchor rod body 3. The anchor head 1 is conical, and the outer diameter of the tail part of the anchor head 1 is the same as the outer diameter of the sealing layer 7. The outer surface of the anchor head 1 is circumferentially provided with barbs. The section of the anchor rod body 3 is elliptical and has a variable diameter structure along the length direction. The number of the reducing sections of the appearance of the anchor rod body 3 is 3. The cement cartridge 2 contains a water-immersed cement anchoring agent.

Example two

The difference from the first embodiment is that: the cross section of the backing plate 5 is circular.

When the drilling tool is used, drilling holes on a protection (support) working surface according to the depth of the designed anchor holes, and cleaning the holes after the drilling is completed; taking out the anchor rod wrapped with the cement cartridge from the sealing sleeve, soaking in water, and fully wetting until no bubbles are generated in the water; holding the end part of the anchor rod body, and inserting the anchor rod into the anchor hole to the designed depth; the barbs circumferentially arranged on the outer surface of the anchor head can form pull marks in the inserting process, and the anchor rod body is rotated for a certain angle, so that the barbs are rotationally staggered with the pull marks, a certain reverse acting force is realized, and the anchor rod body is prevented from falling off under the influence of external force in the cement cartridge curing process; and after the cement cartridge is solidified, adjusting nuts on the anchor rod body, and installing and fastening the backing plate.

Claims

1. The utility model provides a slope protection stock, includes anchor head (1) and stock body (3), its characterized in that, the periphery of stock body (3) is wrapped up in and is covered cement cartridge (2), the surface parcel of cement cartridge (2) has sealing layer (7), the front end and the anchor head (1) fixed connection of stock body (3), stock body (3) are close to tail end position and are provided with backing plate (5), sealing sleeve (6) have been cup jointed to stock body (3) periphery of backing plate (5) front end, backing plate (5) rear end is provided with nut (4), be provided with nut (4) complex external screw thread on stock body (3).

2. A slope protection bolt according to claim 1, characterised in that the cement cartridge (2) has a circular outer cross section.

3. A slope protection bolt according to claim 1, characterised in that the sealing sleeve (6) is a threaded rubber sealing sleeve.

4. A slope protection bolt according to claim 1, characterised in that the cross section of the pad (5) is square or circular.

5. A slope protection bolt according to claim 1, characterised in that the bolt head (1) is fixedly connected to the bolt body (3).

6. A slope protection bolt according to claim 5, characterised in that the bolt head (1) is tapered, the outer diameter of the tail of the bolt head (1) being the same as the outer diameter of the sealing layer (7).

7. A slope protection bolt according to any one of claims 1 to 6, wherein the outer surface of the head (1) is provided with barbs circumferentially.

8. A slope protection bolt according to claim 7, characterised in that the bolt body (3) is elliptical in cross section and of variable diameter in length.

9. A slope protection bolt according to claim 8, characterised in that the number of reducing segments of the bolt body (3) profile is greater than 3.