REMOVABLE GROUND ANCHOR BODY USING SPRING

Abstract

A removable ground anchor body uses a spring and includes: a waterproof cap formed with an upward screw groove at an inner lower end; a housing that is coupled to a lower end of the waterproof cap and is formed with an upward locking protrusion therein; a body that is formed with a rotating main spring coupled to a screw groove of the waterproof cap at the top and is formed with a stopper on an outer peripheral edge to be locked to the locking protrusion of the housing; a stopper presser that is installed between the waterproof cap and the body and brings the lower end into close contact with the stopper upper surface of the body; a strand wire wedge; a wedge hold; and a head coupler.

Claims

1. A removable ground anchor body, comprising: a waterproof cap including a screw groove located inside the waterproof cap, wherein the screw groove extends upwardly from an inner lower end of the waterproof cap; a housing coupled to a lower portion of the waterproof cap and including a locking protrusion therein; a rotating mainspring coupled with the screw groove; a body coupled with the rotating main spring; a strand wire wedge coupled to a lower portion of the body and including a plurality of pieces; a wedge hold including a tapered hole for receiving the strand wire wedge, and including a locking jaw; a cushioning auxiliary spring located on the locking jaw and extending downward; and a head coupler coupled to a lower portion of the housing to house and support the wedge hold therein and including an entry hole at a bottom of the head coupler for receiving a tensile material.

2. The removable ground anchor body of claim 1, further comprising: a stopper presser located below and adjacent to the waterproof cap, and located within the housing, wherein the body comprises: a stopper located on an outer peripheral edge of the body, and located between the stopper presser and the locking protrusion, such that the stopper is pressed against the locking protrusion by the stopper presser.

3. The removable ground anchor body using the spring of claim 1, wherein the body further comprises: a key groove; a coupling protrusion coupling with the strand wire wedge; and an annular coupling groove receiving an upward locking protrusion of the strand wire wedge.

4. The removable ground anchor body using the spring of claim 1, wherein the locking jaw is located on an outer peripheral portion of the wedge hold, such that the locking jaw receives a cushioning auxiliary spring, and such that the cushioning auxiliary spring supports the wedge hold above the head coupler, and wherein the head coupler includes a support jaw supporting the cushioning auxiliary spring.

5. The removable ground anchor body using the spring of claim 1, wherein the head coupler is coupled to the housing and supports the housing, wherein the head coupler comprises a support jaw receiving and supporting a cushioning auxiliary spring, and wherein the cushioning auxiliary spring is sized to fit into the locking jaw of the wedge hold.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other aspects, features and advantages of certain exemplary embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0021] FIG. 1 is a perspective view illustrating a separated state of a removable ground anchor body using a spring according to the present invention;

[0022] FIG. 2 is a cross to sectional view illustrating a separated state of the removable ground anchor body using the spring according to the present invention;

[0023] FIG. 3 is a cross to sectional view illustrating an assembled state of the removable ground anchor body using the spring according to the present invention;

[0024] FIG. 4 is a cross to sectional view illustrating a tensile state of the removable ground anchor body using the spring according to the present invention;

[0025] FIG. 5 is a cross to sectional view illustrating a separated state of the removable ground anchor body using the spring according to the present invention; and

[0026] FIG. 6 is a cross to sectional view illustrating an installed state of a removing type ground anchor body using the spring according to the present invention.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0027] Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Wherever possible, the same reference numerals will be used to refer to the same elements throughout the specification, and a duplicated description thereof will be omitted. It will be understood that although the terms first, second, etc. are used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element.

[0028] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0029] As illustrated in FIGS. 1 to 6, a removable ground anchor body 1 using a spring that includes a waterproof cap 110 formed with an upward screw groove 111 from an inner lower end; a housing 120 that is coupled to a lower end of the waterproof cap 110 and is formed with a locking protrusion 121 corresponding to the waterproof cap 110 therein; a body 130 that is formed with a rotating main spring 136 coupled to a screw groove 111 of the waterproof cap 110 at the top and is formed with a stopper 131 on an outer peripheral edge to be locked to the locking protrusion 121 of the housing 120; a stopper presser 140 that is installed between the waterproof cap 110 and the body 130 and brings the lower end into close contact with the stopper 131 upper surface of the body 130; a strand wire wedge 150 that is coupled to the lower portion of the body 130 and is made up of a plurality of pieces; a wedge hold 160 that forms a tapered hole 161 for guiding the strand wire wedge 150 and has a cushioning auxiliary spring 163 flexibly installed at the bottom; and a head coupler 170 that is coupled to the lower portion of the housing 120 to support the wedge hold 160 and is formed with an entry hole 171 in the length direction.

[0030] The watertight cap 110 is formed with the screw groove 111 inside upward from the lower end, and is preferably formed with a bolt head-shaped protrusion at the top to facilitate the fastening operation of the housing 120.

[0031] The housing 120 is formed in a cylindrical shape that vertically penetrates, is provided with a packing or the like at the top, can fasten the watertight cap 110 by a conventional coupling means such as screw coupling or the like, is formed with a locking protrusion 121 in the upward direction on the inner peripheral edge, and the upper side of the stopper 131 of the body 130 is locked by the locking protrusion 121.

[0032] The screw protrusion 132 protrudes upward at the center of the upper surface of the body 130, and a rotating main spring 136 coupled to the screw groove 111 of the waterproof cap 110 is integrated to the screw protrusion 132, by being coupled upward. Thus, with the rotation or the reverse rotation of the body 130, the rotating main spring 136 also rotates and reversely rotates to rise or fall along the screw groove 111, and the body 130 is also formed to rise and fall.

[0033] In addition, a flange-shaped stopper 131 is formed on the outer peripheral edge of the body 130 to be locked to the top of the locking protrusion 121 of the housing 120.

[0034] In addition, a coupling protrusion 133 protrudes downward from in the bottom center of the body 130, and an annular coupling groove 134 is formed on the outer peripheral edge of the coupling protrusion 133 so that the strand wire wedge 150 can be coupled thereto, and a key groove 135 is preferably formed upward on the lower end surface of the coupling protrusion 133 so that the front end of the tensile material 180 can be fitted and key-coupled thereto.

[0035] The stopper presser 140 is formed in a cylindrical shape and is inserted into the housing 120 so as to be positioned between the lower end of the watertight cap 110 and the stopper 131 of the body 130. Thus, the stopper 131 can be ideally locked on the locking protrusion 121 of the housing 120 to suppress the movement.

[0036] Here, the stopper presser 140 may also be used by being integrally formed with the watertight cap 110, it is preferably used in a separated state in view of the molding ratio or the like.

[0037] The strand wire wedge 150 is fitted and connected to the coupling groove 134 of the body 130 by forming the upward locking protrusion 151 on the upper side, and is generally formed in three pieces by trisection.

[0038] The wedge hold 160 is formed with a tapered hole 161 to be able to fix or release the tensile material 180 by guiding the strand wire wedge 150, and is formed with a locking jaw 162 on the lower peripheral edge.

[0039] In particular, since the wedge hold 160 is provided with a buffering auxiliary spring 163 corresponding to the locking jaw 162 to flexibly install the wedge hold 160 upward, the strand wire wedge 150 can be preferably fitted to the tapered hole 150 to stably maintain the fixed state of the tensile material 180.

[0040] The head coupler 170 is preferably coupled to the bottom of the housing 120 to support the wedge hold 160, is formed with an entry hole 171 in a lengthwise direction so that the tensile material 180 can enter and exit from the outside, and is formed with a support jaw 172 inside to support the lower end of the wedge hold 160 and the lower end of the buffering auxiliary spring 163 such that the flexibly installed wedge hold 160 can be smoothly operated.

[0041] Here, the head coupler 170 is coupled to the lower side of the housing 120, is provided with a packing or the like, and is coupled with normal coupling means such as screw coupling.

[0042] The operation of the present invention will be described below.

[0043] First, as illustrated in FIG. 3, when the assembly of the anchor member 100 is completed, the stopper 131 of the body 130 is fit between the locking protrusion 121 of the housing 120 and the stopper presser 140, and the body 130 maintains a fixed state, the flexibly installed wedge hold 160 to face upward press-fits the strand wire wedge 150 to the tapered hole 161, thereby stably and consistently maintaining the state assembled to the tensile material 180.

[0044] Thus, even when an external impact occurs during movement or installation, it is possible to stably and consistently maintaining the assembled state.

[0045] Nevertheless, even when the stopper 131 of the body 130 is damaged due to the strong external impact energy, the rotating main spring 136 presses the strand wire wedge 150 to the tapered hole 161 of the wedge hold 160, and at the same time, the buffering auxiliary spring 163 presses the wedge hold 160 toward the strand wire wedge 150. Thus, the strand wire wedge 150 can maintain the assembled state, by continuing the state of stably fixing the tensile material 180 such as a PC strand wire. Since each of the elasticity of the rotating main spring 136 and the buffering auxiliary spring 163 acts on the upper and lower portions of the strand wire wedge 150, the elasticity strength of the rotating main spring 136 and the buffering auxiliary spring 163 is mutually offset in the upper and lower portions even in the case of the external impact, and thus, the strand wire wedge 150 can maintain a stable and perfect assembled state in the front end of the tensile material 180.

[0046] As illustrated in FIG. 4, after the anchor body 100 assembled as described above is inserted into the drilled holes of the slope, the grouting is performed, and thereafter, when pulling the tension material 180, the strand wire wedge 150 is strongly pulled by tensile strength of several tons, and the strand wire wedge 150 further bites and presses the tensile material 180, while moving to the tapered hole 161 of the wedge hold 160, and thus, a rigid and strong coupling state is maintained, the tensile material 180 is smoothly and safely pulled to induce the stabilization of the structure or the like.

[0047] At this time, since the tensile material 180 is pulled by the powerful force of several tons, while the body 130 coupled to the strand wire wedge 150 is also pulled, the stopper 131 of the body 130 is crushed and removed by being locked to coupling protrusion 121 of the housing 120.

[0048] As illustrated in FIG. 5, after the pulling operation of the tensile material 180, when the installation of the various structures is completed and the removal work of the tensile material 180 is performed, the tensile material 180 with a released tensile state is rotated.

[0049] At this time, the body 130 coupled to the strand wire wedge 150 also rotates in connection with the rotation of the tensile material 180, and thus, the rotating main spring 136 coupled to the body 130 also rotates.

[0050] Therefore, while the upper part of the rotating main spring 132 rotates through the screw groove 111 of the waterproof cap 110, since the spring is moved to the upper side of watertight cap 110 and the body 130 is also moved to the upper side in connection therewith, the strand wire wedge 150 coupled to the body 130 is also moved to release the locked state of the tensile material 180.

[0051] Here, the strand wire wedge 150 is smoothly expanded by an elastic band (not illustrated) to release the locked state of the tensile material 180, and pulls the rear end of the tensile material 180 in this state to remove the tensile material 180 in the slope.

[0052] In particular, in such an anchor body 100, when rotating the tensile material 180, the elasticity of the buffering auxiliary spring 163 acts on the waterproof cap 110 side to allow the strand wire wedge 150 to smoothly escape from the tapered hole 151 of the wedge hold 150, and since the stopper 131 is in a crushed and removed state, it is moved to a position at which the separation of the strand wire wedge 150 can completely and sufficiently act and escape from the tapered hole 151, and thus, it is possible to easily, conveniently and simply separate and remove the tensile material 180, thereby smoothly separating and removing the tensile material 180 with only the man power.

[0053] While the invention has been illustrated and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the scope of the invention is defined not by the detailed description of the invention but by the appended claims, and all differences within the scope will be construed as being included in the present invention.