KR20170065298A

KR20170065298A - Fixing device for earth anchor

Info

Publication number: KR20170065298A
Application number: KR1020150171555A
Authority: KR
Inventors: 신동은
Original assignee: 신동은
Priority date: 2015-12-03
Filing date: 2015-12-03
Publication date: 2017-06-13

Abstract

The present invention relates to a fixing anchor for an earth anchor, which improves the fixing structure of the fixing anchor to facilitate assembly and prevent breakage during installation.
In order to solve this problem, in the present invention, a stranded wire is inserted into the inside of a housing to penetrate a wedge, so that a hexagonal lenticular bolt An upper cover which is formed with a first movement space having a first spring and is screwed to the lower side of the housing; A hexagonal bolt bolt coupled to the other side of the wedge and configured to move up and down in a first movement space; A moving member having a moving female threaded portion formed therein so as to be screwed with the hexagonal wrench bolt and configured to be movable up and down by rotation of the hexagonal wrench bolt; A lower cover provided on the inner side with a second spring for applying an elastic force to the moving member is screwed to the upper cover, a guide protrusion is formed perpendicularly to the inner peripheral surface of the lower cover, And an insertion groove into which the guide protrusion is inserted is formed so as to prevent rotation while moving up and down along the protrusion.
Therefore, according to the present invention, since the cover coupled to the housing is divided into the upper cover and the lower cover, not only the moving member and the second spring are more easily engaged but also a separate stopper for blocking the rising of the moving member is not required Cost and assembly cost can be reduced. In addition, since the moving member is not only vertically moved by the guide protrusion but also prevented from rotating, there is no possibility that the fixing member is broken during the operation.

Description

Fixing device for earth anchor

The present invention relates to a fixing anchor for an earth anchor, and more particularly, to a fixing anchor for an earth anchor which improves the fixing structure of the fixing anchor to facilitate assembly and prevent breakage during installation.

In general, the earth anchor method is a method of drilling a hole in a retaining wall to insert a reinforcing bar or a PC steel wire, then grouting the mortar to form an anchor on the back surface, and then grasping the retaining wall. Drill), putting a tensile material such as reinforcing steel or PC steel into it, grouting it with mortar and hardening it, and then applying tensile force such as PC steel wire or reinforcing steel to the outside to fix it.

The ground anchor (ground anchor) means a nail that is put on the ground like the description, and it has the effect of tying the ground and the structure into one aggregate. Generally, the anchor composed of steel wire and cement grout is used variously such as foundation guard, permanent anchor earth wall, transmission tower foundation, dam reinforcement, buoyancy anchor of underground structure, slope reinforcement.

A wedge fixture is widely used in the earth anchor to ensure a connection with the tensile material. Such a conventional fixture is structurally difficult to remove the strand, There was a problem that the stranded wire was detached from the wedge during transportation and was unable to re-seal.

Therefore, the applicant of the present invention has proposed a fixing hole for an earth anchor which can easily remove a strand and re-tension the process of releasing a wedge in Patent Registration No. 10-0898907 in order to solve such a problem, 1 is a cross-sectional view showing a state in which a strand 1 is bonded or re-stretched to a fixing anchor for an earth anchor proposed by the present applicant.

However, some problems are found in the fixing and fixing of the earth anchor to improve the fixing.

The square hole for the earth anchor has an insertion protrusion 54a formed on the upper side and a lower side of the second spring 54. The insertion protrusion 54a on the upper side is inserted into the insertion hole 52 of the moving member 50 And the lower insertion protrusion 54a is inserted into the insertion groove 24 of the housing cover 20 and fixed.

The coupling structure of the second spring 54 is problematic in that the assembling process of inserting and fixing the respective insertion protrusions 54a in the correct positions is very troublesome.

In addition, there is a limit in preventing rotation of the movable member 50 when the hexagonal bolt 40 rotates.

That is, when the hexagonal bolt 40 rotates, the shifting member 50 is fixed by the insertion protrusion 54a of the second spring 54 and is prevented from rotating so that it can move up and down.

However, since the fixing force of the second spring 54 by the insertion protrusion 54a is very weak, the shifting member 50 is moved out of the insertion protrusion 54a and rotated together with the hexagonal bolt 40 so that the strand 1 is removed And the stopper 53 for preventing the shifting of the shifting member 50 is disengaged by the rotation so that the fixing member can not be used.

Therefore, the present applicant intends to propose a further improved fixture for an earth anchor in which the second spring 54 is more easily assembled and the shifting member 50 is not likely to rotate, in order to solve such problems of assembly and construction.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a fixture for an earth anchor which improves the joint structure of the spring and the shifting member and is easier to assemble the fixture, .

Another object of the present invention is to provide an anchor fixing hole for an earth anchor which can easily remove a stranded wire by simply removing a wedge and can re-tension the anchor.

In the fixation port for an earth anchor according to the present invention, a stranded wire is inserted into the inside of the housing to penetrate the wedge and inserted into the head portion of the hexagonal lenticular bolt, wherein a first movement space provided with a first spring is formed An upper cover screwed to the lower side of the housing; A hexagonal bolt bolt coupled to the other side of the wedge and configured to move up and down in a first movement space; A moving member having a moving female threaded portion formed therein so as to be screwed with the hexagonal wrench bolt and configured to be movable up and down by rotation of the hexagonal wrench bolt; A lower cover provided on the inner side with a second spring for applying an elastic force to the moving member is screwed to the upper cover, a guide protrusion is formed perpendicularly to the inner peripheral surface of the lower cover, And an insertion groove into which the guide protrusion is inserted so as to prevent rotation while moving up and down along the protrusion.

According to the present invention, since the cover coupled to the housing is divided into the upper cover and the lower cover, the moving member and the second spring can be more easily engaged with each other, A separate stopper is not required, so that manufacturing cost and assembly cost can be reduced.

In addition, since the moving member is not only vertically moved by the guide protrusion but also prevented from rotating, there is no possibility that the fixing member is broken during the operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a conventional fixing member for an earth anchor,
2 is a cross-sectional view of a fixing member for an earth anchor according to the present invention,
3 is a perspective view of a movable member and a lower cover according to the present invention,
FIG. 4 is a cross-sectional view showing a state in which a stranded wire is bonded or re-
5 is a cross-sectional view of the fixing member of the present invention in a state in which the wedge is released,
6 is a cross-sectional view of a fixing port of the present invention in which stranded wires are removed.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the fixing member for an earth anchor according to the present invention includes a housing 10, an upper cover 20 screwed to the housing 10, a wedge 30 (not shown) coupled to the inside of the housing 10, A hexagonal wrench bolt 40 coupled to the wedge 30 and a shifting member 50 screwed to the hexagonal wrench bolt 40 and a lower member 40 coupled to the lower cover 20, As shown in Fig.

At this time, a pipe 11 for protecting the strand 1 from the grouting installation after the underground burial of the strand 1 is installed on the front surface of the housing 10 together with the packing member 12 for preventing the foreign matter from flowing into the inside of the housing 10 .

A film 13 is coupled to the inner inclined surface of the housing 10 to facilitate the movement of the wedge 30. The film 13 may be rusted or the wedge 30 may contact the wedge 30 and the housing 10 It is preferable to be made of a synthetic resin in order to prevent the sticking phenomenon.

An upper cover 20 is screwed to the rear side of the housing 10 and a first movement space 21 is formed inside the housing cover 20 so that the hexagonal wrench bolt 40 can move up and down have.

A through hole 22 is formed on the lower side of the first moving space 21 and a moving member 50 penetrating the through hole 22 is formed on the lower side of the upper cover 20, 40).

A lower cover 60 is screwed on the lower side of the upper cover 20 and a second moving space 61 is formed on the inner side of the lower cover 60 so that the moving member 50 can move up and down. .

On the other hand, a wedge 30 is coupled to an inner inclined surface of the housing 10, and three wedges 30 are radially separated and separated from each other.

The wedge 30 is formed such that its tip is inclined so as to be in close contact with the film 13 coupled to the inside of the housing 10. The respective wedge 30 is fixed to the outer circumferential surface and the spacing distance is uniformly maintained The stationary ring 31 is engaged.

A stepped portion 32 is formed on the inner side of the wedge 30 and a wing portion 41 formed on the hexagonal wrench bolt 40 is coupled to the stepped portion 32.

The hexagonal lenticular bolt 40 coupled with the wedge 30 is positioned in the first movement space 21 and the washer 42 is coupled to the lower portion of the hexagonal lenticular bolt 40.

A first spring 43 is mounted on the underside of the washer 42 and is seated on a bottom surface of the upper cover 20. The first spring 43 is connected to the wedge 30 and the hexagonal wrench bolts 40 The elastic force is always applied so as to be directed upward.

The moving member 50 is formed in a flange shape having a moving female threaded portion 51 on the inner side and an insertion groove 52 is formed on one side of the lower end of the movable member 50 as shown in FIG.

A guide protrusion 62 is formed in the vertical direction on the inner peripheral surface of the lower cover 60. The guide protrusion 62 is inserted into the guide groove 52 of the moving member 50, And moves up and down along the protrusions 62.

The moving member 50 is screwed to the hexagonal wrench bolt 40 through the through hole 22 of the upper cover 20 so that the moving member 50 is moved to the bottom surface of the moving member 50 and is prevented from further rising.

A second spring 63 is provided on the lower side of the movable member 50 so that the bottom surface of the movable member 50 is seated on the bottom surface of the lower cover 60 so that the movable member 50 is always urged upward do.

4, the strand 1 inserted in the front of the housing 10 passes through the center of the wedge 30 provided on the inside of the housing 10, and the hexagonal wedge- Is inserted into the head of the bolt (40).

At this time, the wedge 30, the hexagonal wrench bolt 40 and the shifting member 50 are fixed to the inside of the wedge 30 while slightly moving downward together when the strand 1 is squeezed from the outside.

When the strand 1 is to be removed from the fixture, the strand 1 is rotated in the direction of the arrow (counterclockwise) as shown in FIG. 5, And is rotated together with the strand 1.

When the hexagonal wrench bolt 40 is rotated, the moving member 50 screwed with the hexagonal wrench bolt 40 moves upward until it is brought into close contact with the bottom surface of the upper cover 20, The hexagonal lenticular bolt 40 moves downward together with the wedge 30. [0050]

At this time, not only the moving member 50 moves vertically along the guide protrusion 62 but also the rotation of the hexagonal wrench bolt 40 is prevented by the guide protrusion 62 inserted in the guide groove 52, do.

As shown in FIG. 6, the plurality of wedges 30 are spaced apart from each other by the downward movement of the inclined surface of the housing 10 to securely fasten the stiffening wire 1 inside the wedge 30, It will be possible to do.

The impact applied to the wedge 30 is absorbed by the elastic force of the first spring 23 and the second spring 63 so that the strand 1 is detached from the wedge 30 In addition,

On the other hand, in the present invention, when the strand 1 is rotated in the opposite direction or the strand 1 is forcedly inserted inside the fixture, the strands 1 and the wedge 30 can be re-tensioned.

In this case, the stranded wire 1 is generally formed by spirally winding seven wire rods so that the cross-section is formed into a hexagonal shape as shown in FIG. 5 so as to be inserted into the head of the hexagonal wrench bolt 40 .

Therefore, the present invention is configured such that the cover coupled to the housing 10 is divided into the upper cover 20 and the lower cover 60 so that the shifting member 50 and the second spring 63 are more easily engaged, It is not necessary to provide a separate stopper for shutting off the rising of the member 50, thereby reducing manufacturing cost and assembly cost.

In addition, the moving member 50 is not only vertically moved by the guide protrusion 62 but also prevented from rotating so that the fixing port is not damaged during the operation.

10: housing 11: pipe
12: packing member 13: film
20: upper cover 21: first moving space
22: through hole 23: first spring
30: Wedge 31: Retaining ring
32: Step 40: Hex wrench bolt
41: wing portion 42: washer
50: moving member 51: moving female thread portion
52: guide groove 60: bottom cover
61: second moving space 62: guide projection
63: second spring

Claims

There is provided an anchor for an anchor for an anchor which is inserted into an inner side of a housing and inserted into a head portion of a hexagon bolt through a wedge,
An upper cover 20 formed with a first moving space 21 provided with a first spring 23 and screwed to a lower side of the housing 10; A hexagonal bolt 40 configured to be engaged with the other side of the wedge 30 and to move up and down in the first movement space 21; A movable member 50 having a movable female threaded portion 51 formed therein so as to be screwed with the hexagonal lenticular bolt 40 and configured to be movable up and down by rotation of the hexagonal lenticular bolt 40; , &Lt; / RTI >
A lower cover 60 having a second spring 63 for applying an elastic force to the moving member 50 is screwed to the upper cover 20,
Guide protrusions 62 are vertically formed on the inner circumferential surface of the lower cover 60,
Wherein the moving member is formed with an insertion groove into which the guide protrusion is inserted to prevent rotation of the movable member while moving up and down along the guide protrusion.

The method according to claim 1,
A through hole 22 through which the shifting member 50 is inserted is formed on the lower side of the upper cover 20 and the shifting member 50 is brought into close contact with the bottom surface of the upper cover 20, Features an easing anchor for earth anchors.

The method according to claim 1,
Wherein a washer (42) is coupled to the hexagonal wrench bolt (40), and a first spring (23) seated on the bottom surface of the upper cover (20) is provided below the washer Anchorage.