KR20100101196A

KR20100101196A - Ground anchor

Info

Publication number: KR20100101196A
Application number: KR1020090019548A
Authority: KR
Inventors: 김성우
Original assignee: (주)부흥이엔에이치
Priority date: 2009-03-09
Filing date: 2009-03-09
Publication date: 2010-09-17

Abstract

PURPOSE: A ground anchor for eliminating a tension member is provided to enable a worker to easily eliminate a tension member by fixing a wedge. CONSTITUTION: A ground anchor for eliminating a tension member comprises a housing(10), a wedge(20), and a spring(30). A space(13) is formed inside the housing. An opening(14) in which a tension member(1) is inserted and a tapered part are formed in the housing. The wedge is movably installed in the space and fixes the inserted tension member. The spring is formed inside the space and presses the wedge toward the front of the housing.

Description

Ground anchors for tension removal

The present invention relates to a ground anchor for removing a tension member of a new structure that allows the operator to easily remove the tension member.

In general, the earth wall or retaining wall used to prevent ground collapse in the construction site is fixed to the ground by using a tension member such as wire cable made by twisting a plurality of metal wires in a spiral direction.

In recent years, after the ground anchor is buried in the ground and the tension member is fixed to the ground anchor, when the construction is completed, the tension member is separated and removed from the ground anchor.

FIG. 1 illustrates an example of such a ground anchor, and includes a housing 10 having a space 13 formed therein and an opening 14 formed therein into which the tension member 1 is inserted, and the space 13. And a wedge 20 which is installed in the space portion 13 so that the tension member 1 inserted into the space portion 13 through the opening 14 is moved forward and backward, and installed in the space portion 13. It consists of a spring 30 for pressing the wedge 20 toward the front of the housing 10.

The housing 10 includes a first housing 11 having an opening 14 formed at a distal end thereof, a second housing 12 coupled to a rear end of the first housing 11, and the space part 13. The tapered portion 15 is narrowed toward the opening 14 in the front.

The wedge 20 includes a support block 21 having a support jaw 21a formed on a circumferential surface thereof, and a plurality of wedge pieces 22 coupled to the support jaw 21a of the support block 21 so as to be movable. The elastic member 23 is coupled to the circumferential surface of the wedge piece 22 to press the tip portion of the wedge piece 22 outwardly. The spring 30 is installed inside the space 13 so as to be located behind the wedge 20 so that the front end of the wedge piece 22 is in close contact with the taper 15. By pressing in such a manner, the tip of the wedge piece 22 is tightened in the adjacent direction.

The ground anchor configured as described above, when the tension member 1 is inserted between the wedge pieces 22 through the opening 14, the wedge 20 is pushed forward by the spring 30 so that the wedge pieces 22 are pushed forward. When the tension member 1 is pulled outward, the wedge 20 which is biting the tension member 1 is pulled forward together with the tapered portion 15 to fix the outside of the tension member 1. 22) by tightening and fixing the circumferential surface of the tension member 1 more strongly, it is widely used because there is an advantage that can be firmly fixed so that the tension member 1 does not escape.

However, the ground anchor is fixed to the wedge 20 is pushed forward by the spring 30 to the tension member 1, in order to remove the tension member 1 by pushing the wedge 20 to the rear to the In the state where the front end of the wedge piece 22 is opened outward by the elastic member 23, the tension member 1 must be pulled outward. Therefore, as shown in FIG. 2, after shortly cutting the tension member 1 connected to the black wall or the retaining wall, one of the wires 1a of the plurality of wires 1a forming the tension member 1 using a tool called a release ( By pushing and pushing 1a), the tension material 1 is pulled out and removed in the state which made the pushed wire 1a push back the wedge 20. FIG.

However, there is a problem that pushing the wire 1a using the release is very cumbersome and time consuming. In particular, when the wire 1a constituting the tension member 1 is corroded, there is a problem in that the wire 1a is not pushed out and it becomes more difficult to remove the tension member 1.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a ground anchor of a new structure that is easy to fix and remove the tension member (1).

The present invention for achieving the above object, the space portion 13 is formed therein and the opening portion 14 is formed in the front portion is inserted into the tension member 1, the inside of the space portion 13 of the front A housing 10 having a tapered portion 15 narrowed toward the opening 14; The wedge 20 includes a support block 21 having a support jaw 21a formed on a circumferential surface thereof, and a plurality of wedge pieces 22 coupled to the support jaw 21a of the support block 21 so as to be movable. And an elastic member 23 coupled to the circumferential surface of the wedge piece 22 to press the front end portion of the wedge piece 22 to open outwardly, and is mounted forward and backward in the space 13. A wedge 20 for biting and fixing the tension member 1 inserted into the space 13 through the opening 14; In the ground anchor which is provided in the interior of the space 13 and includes a spring 30 for pressing the wedge 20 toward the front of the housing 10,

The front surface of the support block 21 is formed with a coupling groove (21b) is inserted into the end of the tension member 1 is fixed, the threaded portion 16 is formed in the space 13 of the housing 10, The rear end of the support block 21 is provided with a ground anchor, characterized in that the engaging portion (21c) is screwed with the threaded portion 16 when the wedge 20 is retracted.

According to another feature of the invention, the ground portion is provided on the inner rear side of the housing 10 so that the screw portion 16 is spaced apart from the rear end of the coupling portion 21c by a predetermined clearance (G). .

In the ground anchor according to the present invention, when the operator pushes the tension member 1 and rotates the tension member 1 in a state in which the wedge 20 is retracted, the support block 21 is rotated and the coupling portion 21c is connected to the housing 10. Since the wedge 20 is fixed to the inner threaded portion 16 so that the wedge 20 is not advanced, there is an advantage that the operator can easily release the tension member 1 to the outside.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3 to 6, the ground anchor according to the present invention has a space 13 formed therein, and an opening 14 into which the tension member 1 is inserted in the front is formed, and the space 13 A housing 10 having a tapered portion 15 narrowing toward an opening 14 in the front thereof; The wedge 20 includes a support block 21 having a support jaw 21a formed on a circumferential surface thereof, and a plurality of wedge pieces 22 coupled to the support jaw 21a of the support block 21 so as to be movable. And an elastic member 23 coupled to the circumferential surface of the wedge piece 22 to press the tip end portion of the wedge piece 22 to be opened outward, and is mounted forward and backward in the space 13 so as to move forward. A wedge 20 for biting and fixing the tension member 1 inserted into the space 13 through the opening 14; It is the same as the conventional one including a spring 30 provided in the space 13 to press the wedge 20 toward the front of the housing 10.

In this case, the housing 10 is manufactured by being divided into a first housing 11 having the opening 14 formed at a distal end thereof, and a second housing 12 coupled to a rear end of the first housing 11. The part 15 is formed at the front end of the first housing 11.

In addition, the support block 21 has a coupling groove 21b in which an end of the tension member 1 is inserted and fixed to the front surface. At this time, since the tension member 1 twists a plurality of wires 1a in a spiral direction to form a hexagonal shape, the coupling groove 21b has an end shape of the tension member 1 as shown in FIG. 5. Consists of a hexagonal shape, when the operator rotates the tension member 1 in the state in which the end of the tension member 1 is inserted into the coupling groove 21b, the entire wedge 20 including the support block 21 is rotated. It is configured to be.

In addition, a threaded portion 16 is formed in the space 13 of the housing 10, and a rear end of the support block 21 is coupled to the screwed portion 16 when the wedge 20 is retracted. The part 21c is formed.

The screw portion 16 is formed on the inner rear side of the second housing 12 to be spaced apart from the rear end of the coupling portion 21c to have a predetermined clearance G, so that the coupling portion 21c of the screw portion 16 When the operator pushes the tension member 1 to retreat the wedge 20 until it is caught in the front end portion, the tip portion of the wedge piece 22 is configured to be sufficiently spread outward. The coupling portion 21c is formed in a disc shape having a larger diameter than the outer diameter of the wedge piece 22 provided in the support block 21, and a thread is formed on the circumferential surface thereof, as shown in FIG. When the operator pushes the tension member 1 and retracts the wedge 20 to rotate the support block 21 in a state in which the tip portion of the wedge piece 22 opens outwardly, the coupling portion 21c supports the support block 21. By rotating together with the screw thread formed on the circumferential surface is engaged with the threaded portion 16, the entire wedge 20 including the support block 21 is fixed so as not to be advanced.

Therefore, when the operator pushes the tension member 1 between the wedge pieces 22 through the opening portion 14, the wedge 20 is retracted and the tip portion of the wedge piece 22 opens while the wedge piece 22 is opened. The tension member 1 is inserted and bited therebetween, and when the force pushing the tension member 1 is removed, the wedge 20 is pushed forward by the spring 30, so that the tip portion of the wedge piece 22 is tapered. ), The peripheral surface of the tension member 1 is firmly fixed while being narrowed in an adjacent direction, thereby preventing the tension member 1 from falling out.

6, when the operator pushes the tension member 1 to retract the wedge 20 to remove the tension member 1, the tip portion of the wedge piece 22 is formed by the elastic member 23. When the worker rotates the tension member 1 in the direction of the thread formed on the coupling portion 21c, the coupling portion 21c is engaged with the screw portion 16 and fixed so that the wedge 20 is not advanced. Therefore, the operator can pull out the tension member (1).

The ground anchor configured in this way is that when the user inserts the tension member 1 between the wedge pieces 22 through the opening 14 of the housing 10, each wedge piece 22 is tension member 1 When the user squeezes the circumferential surface of and strongly rotates in a state where the user pushes the tension member 1, the coupling portion 21c of the wedge 20 is coupled to the threaded portion 16 inside the housing 10, thereby wedge 20. Since it is fixed so as not to move forward, the tension member 1 can be easily removed without using a separate tool. Accordingly, there is an advantage that the tension member 1 can be fixed very strongly, while the tension member 1 can be fixed and removed very easily.

In particular, the front end of the support block 21 is formed with a coupling groove 21b to which the tension member 1 is coupled, and when the tension member 1 is pushed to remove the tension member 1, the ends of the tension member 1 are engaged. Since it is fitted into the groove 21b and fixed, it is possible to prevent the tension member 1 from slipping and slipping when the tension member 1 is rotated to rotate the support block 21, so that the tension member 1 is more removed. There is an advantage of convenience.

In addition, since the threaded portion 16 is formed on the inner rear side of the housing 10 so as to be spaced apart from the rear end of the wedge 20 by a predetermined gap G, an operator inserts a tension member 1 into the wedge 20. The wedge 20 does not interfere with the threaded portion 16 when the tension member 1 is pushed in, so that the tension member 1 can be easily inserted and fixed.

In the present embodiment, the coupling groove 21b is exemplified as a hexagonal shape corresponding to the end shape of the wire cable, which is the tension member 1, but when using a different type of wire cable, the shape of the coupling groove 21b May be modified to fit the shape of the wire cable.

1 is a side cross-sectional view showing a conventional ground anchor,

2 is a reference diagram showing a conventional method of removing the tension member of the ground anchor,

Figure 3 is a side cross-sectional view showing a tension member of the ground anchor according to the present invention,

4 is an exploded side view showing a tension member of the ground anchor according to the present invention;

5 is a plan view showing a coupling groove of the ground anchor according to the present invention,

Figure 6 is a reference diagram showing a method of removing the tension member of the ground anchor according to the present invention.

Claims

A space portion 13 is formed therein, and an opening portion 14 into which the tension member 1 is inserted is formed in the front portion, and a taper portion 15 narrowing toward the opening portion 14 in the front portion is formed inside the space portion 13. A housing 10 formed with;

The wedge 20 includes a support block 21 having a support jaw 21a formed on a circumferential surface thereof, and a plurality of wedge pieces 22 coupled to the support jaw 21a of the support block 21 so as to be movable. And an elastic member 23 coupled to the circumferential surface of the wedge piece 22 to press the front end portion of the wedge piece 22 to open outwardly, and is mounted forward and backward in the space 13. A wedge 20 for biting and fixing the tension member 1 inserted into the space 13 through the opening 14;

In the ground anchor which is provided in the interior of the space 13 and includes a spring 30 for pressing the wedge 20 toward the front of the housing 10,

The front surface of the support block 21 is formed with a coupling groove (21b) is inserted into the end of the tension member 1 is fixed, the threaded portion 16 is formed in the space 13 of the housing 10, Ground anchor, characterized in that the rear end of the support block 21 is formed with a coupling portion (21c) that is screwed with the screw portion (16) when the wedge (20) retreat.

The ground anchor according to claim 1, wherein the screw portion (16) is formed on the inner rear side of the housing (10) so as to be spaced apart from the rear end of the coupling portion (21c) by a predetermined clearance (G).