KR102431110B1 - Removable anchor - Google Patents

Abstract

The present invention relates to a removable anchor. The removable anchor according to one embodiment of the present invention comprises: a body unit forming a receiving space that is wide at the top and narrow at the bottom in the height direction; a head unit connected to the body unit; a wedge unit disposed on the receiving space and restraining a tension member; and a connection unit forming an enclosing space surrounding an upper end of the tension member and connected to the wedge unit. The wedge unit may be moved to a first position in which the tension member is restrained and a second position in which the tension member is not restrained as the tension member is moved upward by the connection unit when the tension member is pressed upward in the first position. Accordingly, the removable anchor has no risk of breakage even when the tension member is hit.

Description

Removable anchor}

The present invention relates to a removable anchor, and more particularly, to a removable anchor capable of easily removing a tension member.

In general, anchors are used to prevent collapse and slope stability of cut surfaces in cut-off sites, to prevent flotation by groundwater of large structures such as buildings or dams, and to prevent collapse of excavated walls during underground civil works of large buildings, and earthquakes. It is installed to prevent movement or distortion of the structure when constructing a building such as a ground or a large pylon.

In this anchor method, the components of the anchor are divided into a fixing part that exerts a required stress, a free part that transmits the stress exerted at the anchorage, and a fixture that makes the required stress act on the structure.

Among these components, the anchoring part is determined by the adhesion resistance between the ground and the grout, and between the grout and the tension member.

The free part used in the anchor construction method may be, for example, mainly made of a tension member coated with a wire rope in which a plurality of steel wires are twisted.

In general, in construction or civil works such as excavation work, anchors are installed to make the retaining wall respond to the earth pressure of the backing soil or to increase the shear strength of the original ground itself with respect to the slope of the angle of repose or more.

Anchors are divided into permanent anchors and removable anchors according to their purpose.

Removable anchors are used for temporary construction and are removed from the ground after achieving their purpose. The necessity to remove these problems arises because it causes many problems, such as disputes due to invasion of adjacent land, and acts as an obstacle during underground construction of the site where the anchor is installed.

On the other hand, Republic of Korea Patent Registration No. 10-1774869 B1 (2017.08.30) discloses a removable anchor anchorage.

Here, when the tension member is struck to remove the tension member, the spring 70 (elastic member) is damaged.

An object of the present invention is to solve the above problems, and it is an object of the present invention to provide a removable anchor in which an operator can easily remove the tension member and there is no risk of damage even when the tension member is struck.

The problem to be solved by the present invention is not limited to the above-mentioned problems, and the problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the present specification and the accompanying drawings. .

Removable anchor according to an embodiment of the present invention includes a body portion forming a receiving space of the upper gwanghahyeop in the height direction; a head connected to the body; a wedge portion disposed on the receiving space and constraining the tension member; and a connecting portion connected to the wedge portion to form an enveloping space surrounding the upper end of the tension member, wherein the wedge portion includes a first position constraining the tension member and when the tension member is pressed upward at the first position It may be moved in the upward direction by the connection part to move to a second position in which the tension member is not constrained.

According to the removable anchor according to an embodiment of the present invention, there is an advantage that an operator can easily remove the tension member, and there is no risk of damage even when the tension member is struck.

Effects of the present invention are not limited to the above-described effects, and effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the present specification and accompanying drawings.

1 is a schematic exploded cross-sectional view of a removable anchor according to an embodiment of the present invention.
2 and 3 are schematic cross-sectional views of a removable anchor according to an embodiment of the present invention.
4 and 5 are cross-sectional views for explaining another embodiment of the pressing part of the removable anchor according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiment, and those skilled in the art who understand the spirit of the present invention may add, change, delete, etc. other elements within the scope of the same spirit, through addition, change, deletion, etc. Other embodiments included within the scope of the invention may be easily suggested, but this will also be included within the scope of the invention.

Removable anchor according to an embodiment of the present invention includes a body portion forming a receiving space of the upper gwanghahyeop in the height direction; a head connected to the body; a wedge portion disposed on the receiving space and constraining the tension member; and a connecting portion connected to the wedge portion to form an enveloping space surrounding the upper end of the tension member, wherein the wedge portion includes a first position constraining the tension member and when the tension member is pressed upward at the first position It may be moved in the upward direction by the connection part to move to a second position in which the tension member is not constrained.

In addition, the pressing unit for pressing the connecting portion to move the wedge portion from the second position to the first position; may further include.

In addition, the pressing part is disposed between the connection part and the head part, and may be made of an elastic rubber material.

In addition, the pressing unit forms a first inner space that is opened in the upward direction and a second inner space that is not opened in the upward direction, and is opened to the first inner space, and is disposed in the first inner space. ; and an expansion unit disposed in the second inner space.

In addition, the humidifying unit includes a first packaging unit forming a storage space and water stored in the storage space, and the expansion unit is stored in the closed space and a water-soluble second packaging unit forming a closed space and is in contact with water. It may be provided with an expanding agent that expands upon time.

In addition, the head may include a protrusion protruding onto the accommodation space, and the protrusion may overlap the humidifier in the height direction, and be formed at a position not overlapping the expansion unit.

Elements having the same function within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

1 is a schematic exploded cross-sectional view of a removable anchor according to an embodiment of the present invention.

2 and 3 are schematic cross-sectional views of a removable anchor according to an embodiment of the present invention.

4 and 5 are cross-sectional views for explaining another embodiment of the pressing part of the removable anchor according to an embodiment of the present invention.

In the accompanying drawings, in order to more clearly express the technical spirit of the present invention, parts that are not related to the technical spirit of the present invention or that can be easily derived from those skilled in the art have been simplified or omitted.

Throughout the specification, when a part is "connected" with another part, this includes not only the case of being "directly connected" but also the case of being "electrically connected" with another element interposed therebetween. . Also, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated, and one or more other features However, it is to be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

In this specification, a "part" includes a unit realized by hardware, a unit realized by software, and a unit realized using both. In addition, one unit may be implemented using two or more hardware, and two or more units may be implemented by one hardware.

1 to 3, the removable anchor 10 according to an embodiment of the present invention may be inserted into the drilling hole to reinforce the ground.

As an example, the removable anchor 10 may include a body portion 100 that forms a receiving space (S1) of the upper and lower halves in the height direction and a head portion 200 connected to the body portion 100. .

Here, the height direction may refer to a vertical direction as seen in FIG. 1 .

Here, as an example, the body part 100 may or may not constrain the wedge part 300 to be described below by forming the accommodating space S1 of the upper and lower halves.

For example, the head 200 may be detachably mounted on the upper side of the body 100 .

For example, the head 200 may form a screw thread to be screw-coupled to the body part 100 , and the body part 100 may also form a screw thread.

On the other hand, the removable anchor 10 is disposed on the receiving space (S1) and forms a wedge portion 300 for restraining the tension member (P) and an enveloping space (S2) surrounding the upper end of the tension member (P). and a connection part 400 connected to the wedge part 300 .

For example, the wedge part 300 may be configured to grip the upper side of the tension member P so that the tension member P is tensioned, and may include a plurality of wedges.

For example, the connecting portion 400 may be coupled to a groove formed in each of the plurality of wedges, and may form the enclosing space S2 in which the upper end of the tension member P may be inserted at the lower side.

On the other hand, the wedge part 300 is moved in the upward direction by the connecting part 400 when the tension member P is pressed upward in the first position and the first position constraining the tension member P. The tension member P may be moved to a second position not constrained.

To explain this in more detail, FIG. 2 shows that the wedge part 300 is positioned at the first position, and FIG. 3 shows that the wedge part 300 is positioned at the second position, As shown in FIG. 2 , the wedge part 300 may be restrained by the body part 100 to hold the tension member P, and may prevent the tension member P from being separated in the downward direction.

On the other hand, in the state of FIG. 2 , when the operator presses (strikes) the tension member P in the upward direction, the tension member P moves upward on the body part 100 in the upward direction while the connection part 400 ) can be moved in the upward direction. At this time, the wedge part 300 connected to the connection part 400 may be moved in the upward direction along the connection part 400 to be positioned at the position shown in FIG. 3 .

At this time, since the wedge part 300 is spaced apart from the body part 100 , it may be positioned at the second position that does not grip the tension member P, that is, does not constrain it.

At this time, the operator can easily remove the tension member (P) from the body portion (100) by momentarily pulling the tension member (P) in the downward direction.

On the other hand, the removable anchor 10 may further include a pressing part 500 for pressing the connecting part 400 to move the wedge part 300 from the second position to the first position.

That is, the pressing part 500 moves the wedge part 300 from the second position to the first position direction (the downward direction) when the wedge part 300 is in the second position. can be configuration.

Here, as an example, the pressing part 500 is disposed between the connection part 400 and the head part 200 and may be made of an elastic rubber material.

For example, the pressing unit 500 may be a disk-shaped rubber.

To explain this in more detail, in that the pressing part 500 is an elastic rubber and is disposed between the connection part 400 and the head part 200, the wedge part 300 moves from the first position to the second position. It is possible to prevent the connection part 400 from directly hitting the head part 200 and being damaged when moved to the position.

In addition, the pressing part 500 may elastically contract when the wedge part 300 is in the second position, and press the connecting part 400 in the downward direction through an elastic restoring force to press the wedge part 300 in the downward direction. ) may be moved from the second position to the first position.

As a result, when re-tensioning of the tension member P is required, the operator presses the tension member P in the upward direction so that the tension member P is inserted into the surrounding space S2 of the connection part 400 . After that, when the pressing in the upward direction is stopped, the pressing part 500 moves the wedge part 300 from the second position to the first position so that the wedge part 300 is the The tension member P may be re-constrained.

Hereinafter, another embodiment of the pressing unit 500A will be described with reference to FIGS. 4 and 5 .

4 is a cross-sectional view of the pressing part 500A, wherein the pressing part 500A includes a first internal space H1 that is opened in the upward direction and a first internal space H1 that is not opened in the upward direction, and the first internal space H1 is not opened in the upward direction. It is possible to form a second internal space (H2) open to the.

For example, the first internal space H1 may be formed by being depressed in the downward direction from the upper surface of the pressing part 500A.

For example, the second inner space H2 may be formed by being depressed laterally from the pressing part 500A forming the first inner space H1 .

Here, the second inner space (H2) is covered by the pressing part (500A) upwardly, not open in the upward direction, and may only be in open communication with the first inner space (H1).

As a result, the first inner space H1 and the second inner space H2 may have a 'L' shape, and are rotated based on the virtual central axis of the pressing part 500A into a ring-shaped space. can be formed.

In addition, the pressing part 500A may further include a connection space H3 into which the connection part 400 can be inserted and connected.

That is, as the connection part 400 is inserted into the connection space H3 , the pressing part 500A may be connected to the connection part 400 .

On the other hand, the removable anchor 10 may further include a humidifying unit 600 disposed in the first inner space (H1) and an expansion unit 700 disposed in the second inner space (H2).

For example, the humidifying unit 600 may include a first packaging unit 610 forming a storage space and water 620 stored in the storage space, and is disposed in the first internal space H1. It may be exposed in the upward direction.

As an example, the humidifying unit 600 may include a water-soluble second packaging unit 710 that forms a closed space and an expanding agent 720 that is stored in the closed space and expands upon contact with water 620, It is disposed in the second inner space (H2) and is not exposed in the upward direction, and may be arranged in contact with the humidifying unit 600 in the lateral direction.

The humidifying part 600 and the expanding part 700 may have a ring shape.

Meanwhile, as shown in FIG. 5 , the head 200A may include a protrusion 210A protruding into the accommodation space S1 .

The protrusion 210A may be configured to protrude from the lower surface of the head 200A in the direction of the receiving space S1.

Here, for example, the protrusion 210A may be formed at a position that overlaps the humidifier 600 in the height direction and does not overlap the expansion unit 700 .

As a result, the protrusion 210A may be in contact with the humidifying unit 600 to pressurize the humidifying unit 600 , and may not be in contact with the expanding unit 700 to pressurize the expanding unit 700 . can

To explain this in more detail, FIG. 5 (a) shows the position of the pressing part 500A when the wedge part 300 is positioned in the first position, in this case, the pressing part 500A. may not come into contact with the protrusion 210A.

5 (a), when the operator presses the tension member P in the upward direction, the pressing part 500A is shown in FIG. 5 when the wedge part 300 is positioned at the second position. It can be moved to the position of (b).

When the pressing part 500A is moved from the position of FIG. 5(a) to the position of FIG. 5(b), the protrusion 210A presses the humidifying part 600 to physically press the first packaging part ( 610) may be torn or damaged.

When the first packaging unit 610 is damaged, the water 620 stored in the storage space may flow out from the first packaging unit 610 .

When water 620 flows out of the first packaging unit 610 , the water 620 may dissolve the water-soluble second packaging unit 710 . That is, the second packaging unit 710 may be chemically decomposed in contact with the water 620 .

Thereafter, the water 620 may be in contact with the expanding agent 720 stored in the closed space, and the expanding agent 720 is expanded by contact with the water 620 to release the wedge part 300 . It can be moved from the second position to the first position.

The expansion of the expansion agent 720 in contact with the water 620 requires that the above-described several steps be implemented, and there is ample time. In the meantime, the operator removes the tension member P, and a new tension member P ) can be re-tensile.

In the above, the configuration and features of the present invention have been described based on the embodiments according to the present invention, but the present invention is not limited thereto, and it is understood that various changes or modifications can be made within the spirit and scope of the present invention. It is intended that such changes or modifications will be apparent to those skilled in the art, and therefore fall within the scope of the appended claims.

100: body
200: head
300: Wetchibu
400: connection
500: pressurized part

Claims (6)

A removable anchor comprising:
a body portion forming an accommodation space of the upper and lower halves in the height direction;
a head connected to the body;
a wedge portion disposed on the receiving space and constraining the tension member; and
and a connecting part that forms an enveloping space surrounding the upper end of the tension member and is connected to the wedge part;
The wedge part,
a first position constraining the tension member; and
When the tension member is pressed upward in the first position, the tension member is moved upward by the connection part and moved to a second position in which the tension member is not constrained,
Further comprising; a pressing unit for pressing the connecting portion to move the wedge portion from the second position to the first position,
The pressurizing part,
It is disposed between the connection part and the head part,
It is made of elastic rubber,
The pressurizing part,
a first inner space opened in the upward direction; and
Do not open in the upward direction to form a second inner space that is opened to the first inner space,
a humidifier disposed in the first inner space; and
Further comprising; an expansion part disposed in the second inner space;
Removable anchor.
delete delete delete According to claim 1,
The humidifier,
a first packaging unit forming a storage space; and
Provided with water stored in the storage space,
The expansion part,
A water-soluble second packaging part that forms a closed space, and
Stored in the closed space and having an expanding agent that expands when in contact with water,
Removable anchor.
6. The method of claim 5,
the head,
and a protrusion protruding into the receiving space,
The protrusion is
Doedoe overlapping with the humidifier in the height direction,
Formed in a position that does not overlap with the expansion part,
Removable anchor.

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