KR20070005840A - Tension member removable anchoring apparatus which eliminating snapring by gravity - Google Patents

Abstract

A tension member removing-type fixing device for removing a snap ring with gravity is provided to reduce the assembly time by forming an combining groove and prevent the water from being infiltrated by installing the waterproof rings between the lower and center cylinders and between the center and upper cylinders. A tension member removing-type fixing device for removing a snap ring with gravity is composed of a lower cylinder(10) whose one surface is formed with a center injection hole(12) and other surface is formed with a combining area; a spring(20) installed in the lower cylinder; a wedge supporting part(30) formed with a taper-shaped wedge insertion hole(32) at the center and formed with a protrusion(34); a center cylinder(40) whose upper, lower and side surfaces are opened; a wedge(50) whose upper side is formed with a combining protrusion(52) combined with a snap ring fixing part(60); the snap ring fixing part formed with a wedge combining area(62) combined with the combining protrusion, and a snap ring expansion area(64); a snap ring(70) mounted at the snap ring expansion area; and an upper cylinder(80) formed with a snap ring insertion groove(90). The waterproof rings are inserted between the lower and center cylinders and between the center and upper cylinders.

Description

Tension remover anchorage with snap ring removed by gravity {TENSION MEMBER REMOVABLE ANCHORING APPARATUS WHICH ELIMINATING SNAPRING BY GRAVITY}

1 is a view for explaining a conventional removable anchor system.

2 is a view for explaining the form in which the anchor system is installed.

Figure 3 is a view showing the configuration of the tension member removing anchorage that the snap ring is removed by the present invention gravity.

Figure 4 is a view showing a state of the tension member bonding and tensioning of the tension member removal anchorage that the snap ring is removed by the present invention gravity.

Figure 5 is a view showing a state during the tension member removal process of the tension member removable anchorage that the snap ring is removed by the present invention gravity.

Figure 6 is a view showing that the fastening groove is formed in the upper cylinder of the tension member removable anchorage to remove the snap ring by the present invention gravity.

*** Explanation of the reference numerals for the main parts of the drawings ***

1: anchorage 10: lower cylinder

20: spring 30: wedge support

40: central pain 50: wedge

60: snap ring fixing 70: snap ring

80: upper cylinder 90: snap ring insertion groove

The present invention relates to an anchor system installed in civil engineering or building structure construction, and more particularly, to a fixing device of the tension member removal anchor system capable of removing the tension member.

       First, the construction method of the conventional anchor system is briefly described.

An anchor system is a fixing device installed in civil engineering or construction building construction and is installed to support the earth wall and to install the earth wall for the construction of underground structures or to prevent surrounding settlement during the excavation.

Anchor system as described above is used to drill the ground at a certain depth and inclination angle using the drilling equipment in the place where the purpose of installation, inserting the pre-assembled anchor system to the drilling in a certain length, ground and anchor through the grouting Secure the system. The grouting is fixed to the ground and the anchor system using a mortar or the like.

The tension member of the anchor system fixed to the ground is tensioned, and the earth wall or other equipment is connected to the tension member to fix the earth wall or other equipment to withstand the load.

Such anchor systems include a non-removable anchor system in which the tension member is buried in the ground and a tension member removable anchor system for removing the tension member.

In the case of the non-removable anchor system, there is a problem of infringement of property rights and pollution of the underground environment. Currently, all of the non-removable anchor system is constructed as a removable anchor system except for a non-removable anchor system.

Such a removable anchor system is most representative of the U-turn anchor system or a straight removable anchor system shown in FIG.

In the case of the U-turn anchor system, since the tension member is inserted back into the perforation, it is difficult to remove the tension member, and there is a problem that the tension member is not frequently drawn along with a problem that a lot of equipment and manpower are mobilized.

In order to overcome the problems of the U-turn anchor system, a straight-type removable anchor system was designed to fix one tension member by one anchorage 1 and to release the tension member within the anchorage 1 during drawing operation. In addition, it is easy to remove the tension member has the advantage of high draw rate.

Therefore, the most important part of the straight removable anchor system has an internal structure that can be changed to the state of releasing the tension member in the state of restraining the tension member when attempting to remove the tension member with the anchorage (1).

Therefore, the mechanical reliability of the anchor system and the reliability of the anchor system itself depend on the assembly form and operating principle of the components constituting the anchorage 1.

However, the conventional straight removable anchor system has a problem in that its structure and operating principle are complicated, so that smooth operation cannot be made, and thus the mechanical reliability and the reliability of the anchor system itself are lowered.

The present invention was devised to solve the problem of the anchorage that can remove the conventional tensioning material as described above is to simplify the structure and assembly form so that the snap ring for fixing the position of the wedge is released by gravity at the tension of the tensioning material It is an object of the present invention to provide a fastener which can further reduce the production cost by reducing the high mechanical reliability and assembly time of the fastener according to the removal of the tension member.

The present invention for achieving the object of the invention as described above, in the tension member removal anchorage that is coupled to the tension member by restraining the distal end of the straight tension member, or separated from the tension member by releasing the restraint of the distal end of the tension member, A lower cylinder 10 having a cylindrical shape with one side formed with a central insertion hole 12 into which the distal end of the straight tension member is inserted, and the other side being opened to form a coupling portion for a predetermined coupling; A spring 20 installed in the inner space of the lower cylinder 10 to provide a predetermined elastic force; The jaw (34) is mounted on the spring (20), and forms a wedge insertion hole (32) in the center in the shape of a cylinder, and protrudes along the outer diameter surface at the outer end surface of the surface in contact with the spring (20). Forming a wedge support 30; The upper and lower sides opened in a cylindrical shape with the upper and lower sides opened to form coupling portions for predetermined coupling, respectively, and the inner diameter allows the wedge support 30 to be inserted and at the same time the jaw of the wedge support 30. 34 is formed so that the spring 20 is inserted, the wedge support 30 is coupled to the other side coupling portion and the one side of the lower cylinder 10 in the state in which the spring 20 is raised on the spring 20 Central pain (40) for binding sites; A wedge 50 inserted into a tapered wedge insertion hole 32 formed in the wedge support 30 to constrain the straight tension member, and an upper side of the wedge 50 forming a coupling jaw 52 coupled to the snap ring fixing part; Snap ring fixing part that forms a snap ring opening part 64 for engaging the snap ring in a state where the snap ring is opened by making the outer diameter larger than the inner diameter of the snap ring and the coupling jaw 52 engaging the coupling jaw 52 of the wedge 50. 60; A snap ring 70 mounted on the snap ring opening portion 64 of the snap ring fixing part 60; And a cylindrical shape having an inner space, one side of which is closed, and the other side of which is open to form a coupling portion for a predetermined coupling to couple the other side coupling portion and the coupling portion of the central cylinder 40 to the snap ring insertion groove. It characterized in that it comprises a; upper cylinder (80) forming a (90).

In addition, the waterproof ring is inserted between the coupling portion of the lower cylinder 10 and the central cylinder 40 and between the coupling portion of the central cylinder 40 and the upper cylinder 80; do.

In addition, the upper cylinder 80 is formed with a coupling groove 82 for engaging with the rotating portion of the external fastening device;

Hereinafter, with reference to the accompanying drawings will be described in detail the tension member removal anchoring device to remove the snap ring by gravity of the present invention.

2 is a view for explaining the form in which the anchor system is installed. 2 is a conceptual view showing a form in which a conventional anchor system is installed. As shown in the drawing, the anchor system is typically installed downward at a predetermined angle with respect to a horizontal plane. That is, as shown, rather than being installed vertically with respect to the wall surface is installed in the downward direction of the gravity direction.

The present invention is conceived in that anchor systems including anchorages are typically installed downwards relative to a horizontal plane, and are characterized by using gravity in separating the snap ring and the snap ring fixing parts of the present invention. 3 will be described in detail below.

Figure 3 is a view showing the configuration of the tension member removal anchor is removed snap ring by the present invention gravity. As shown in FIG. 3, the anchorage according to the present invention has a cylindrical shape having an inner space, and one side thereof forms a central insertion hole 12 into which the distal end portion of the straight tension member is inserted, and the other side thereof is opened to provide a predetermined shape. Lower cylinder 10, which forms a coupling portion for coupling, is installed in the inner space of the lower cylinder 10, the spring 20 to provide a predetermined elastic force, mounted on the spring 20, the center in a cylindrical shape The wedge support part 30 having a tapered shape of the wedge insertion hole 32 and having a jaw 34 protruding along the outer diameter surface on the outer end surface of the surface in contact with the spring 20, the upper and lower sides of the wedge support hole 30 being opened. The upper and lower sides opened in a cylindrical shape each form a coupling portion for a predetermined coupling, the inner diameter allows the wedge support portion 30 can be inserted and at the same time take the jaw 34 of the wedge support portion 30 By forming so that the soup Central cylinder 40 for coupling the coupling portion of the other side coupling portion and the other side of the lower cylinder 10 in the state that the ring 20 is inserted and the wedge support 30 is mounted on the spring 20, The wedge 50 is inserted into a tapered wedge insertion hole 32 formed in the wedge support part 30 to restrain the straight tension member, and the upper side forms a coupling jaw 52 that engages with a snap ring fixing portion, and the wedge. Snap ring fixing part 60 that forms a snap ring opening part 64 that engages the snap ring in a state where the snap ring is opened by the outer diameter larger than the inner diameter of the snap ring and the wedge coupling part 62 that engages with the coupling jaw 52 of the 50. ), A cylindrical shape having a snap ring 70 and an inner space mounted to the snap ring opening portion 64 of the snap ring fixing part 60 is closed on one side, and the other side is open to the coupling site for a predetermined coupling. Forming a combination of the other side coupling portion and the coupling portion of the central barrel (40) It consists of an upper cylinder (80) forming a snap ring insertion groove (90).

That is, as shown in the present invention, the lower cylinder 10, the central cylinder 40 and the upper cylinder 80 are assembled to form one main body. Although not shown in detail in the drawings, the lower cylinder 10, the central cylinder 40 and the upper cylinder 80 is preferably formed to be assembled by screwing to form a mutual screw groove. Therefore, the main assembly of the fixing unit according to the present invention has a three-stage assembly structure. This is a structure for installing a snap ring fixing part 60 is coupled to the spring 20, the wedge support 30, the wedge 50, the snap ring 70 is mounted inside the main body. Looking specifically, the lower cylinder 10 is formed in a cylindrical shape having a predetermined internal diameter therein, one side is closed, the other side has an open shape. At this time, the closed one side has a central insertion hole 12 so that the tension member can be inserted into the fixing unit. The spring 20 is installed in the inner space of the lower cylinder 10 as described above.

The spring 20 is installed in the inner space of the lower cylinder 10 serves to continuously provide a force for pushing the wedge support 30 in the direction of the central cylinder (40).

That is, the spring 20 always provides a force for pushing the wedge support 30 toward the middle cylinder 40, and the wedge support 30 moves toward the lower cylinder 10 only when the tension member is tensioned. To be possible. Therefore, the spring 20 has a high modulus of elasticity such that the spring 20 is compressed only when the tension member is tensioned with a large force.

The wedge support 30 has a cylindrical tapered wedge insertion hole 32 formed in the center as shown in the drawing, and a jaw protruding along the outer diameter surface at an outer diameter surface of the end face in contact with the spring 20 ( 34). The wedge insertion hole 32 is retracted as the wedge 50 holding the tension member is deeply inserted to restrain the tension member with a greater force, and the jaw 34 has a central portion in which the wedge support 30 is inserted. Compared to the inner diameter of the barrel 40, the outer diameter of the portion where the jaw 34 of the wedge support 30 is formed is increased to prevent the wedge support 30 from being inserted into the central barrel 40 any more. Therefore, the inner diameter of the lower barrel 10 is larger than the outer diameter of the portion where the jaw 34 is formed, and the inner diameter of the middle barrel 40 is smaller than the outer diameter of the portion where the jaw 34 is formed.

Therefore, a spring 20 is installed in the lower cylinder 10 before the lower cylinder 10 and the central cylinder 40 are coupled, and the wedge support 30 is placed thereon, and then the central cylinder 40 is attached thereto. ) Is combined. As a result, the spring 20 and the wedge support 30 are mounted by the central cylinder 40.

The snap ring fixing portion 60 is for coupling with the snap ring 70 and the wedge 50, and has a wedge coupling portion 62 and a snap ring opening portion 64 in the form as shown. That is, the wedge coupling portion 62 is coupled to the wedge 50, and the snap ring opening portion 64 is coupled to the snap ring 70 in an open state. Therefore, the snap ring fixing portion 60 is a position change with the wedge 50, and serves to expand the outer diameter of the snap ring (70).

In this case, the snap ring fixing part 60 preferably has a shape as shown, so that the wedge 50 divided into two to three sides has a coupling jaw 52 having a shape as shown in the drawing. Combination with the wedge coupling portion 62 of the (60) to be the opening and closing.

In the assembled state, the wedge 50 is inserted into the wedge insertion hole 32 of the wedge support part 30 installed by the assembly of the lower cylinder 10 and the central cylinder 40, and an extended snap ring 70. Is placed on the central barrel (40). Thereafter, the upper cylinder 80 is coupled to the central cylinder 40, and the extended snap ring 70 is inserted into the snap ring insertion groove 90 formed by the coupling of the central cylinder 40 to the upper cylinder 80. Is inserted and its position is fixed. Therefore, the outer diameter is expanded and the snap ring 70 inserted into the snap ring insertion groove 90 serves to fix the position of the wedge 50. At this time, the inner diameter of the upper cylinder 80 should be larger than the outer diameter when the snap ring 70 is returned to its original state.

Therefore, the present invention is a snap ring that serves as the fixing pin by gravity by installing the main body of the anchorage as a three-stage assembly structure as described above, each component inside the body in the form and assembly structure as shown (70) is removed, so that upon removal of the tension member it is possible to smoothly remove the tension member. The specific principle is described below with reference to FIG.

In addition, although not shown in the drawing, it is preferable to insert a waterproof ring for waterproofing between the coupling portion of the lower cylinder 10 and the coupling portion of the central cylinder 40, and the coupling portion of the central cylinder 40 and It is also desirable to insert a waterproof ring for waterproofing between the coupling portion of the upper cylinder (80). The waterproof ring usually means a means for waterproofing and is not limited to any particular shape and material.

Figure 4 is a view showing the state of the tension member bonding and tensioning of the tension member removal anchorage that the snap ring is removed by the present invention gravity. Figure 4 (a) is a view showing the internal state when the tension member 2 and the anchorage is coupled to the tension member 2 as shown in the drawing as shown in the figure through the central insertion hole 12 of the lower cylinder (10) The distal end of 2) is inserted into the anchorage, and the distal end of the inserted tension member 2 is bitten by the wedge 50 as shown in Fig. 4 (a). At this time, the spring 20 provides a predetermined force in the direction of the arrow to maintain the state pushing the wedge support 30 to the central cylinder 40 side, the wedge 50 inserted into the wedge support 30 is inserted into the snap ring The snap ring 70 inserted into the groove 90 is coupled to the snap ring fixing part 60 coupled thereto and presses the distal end portion of the tension member 2 with a predetermined force in a fixed position thereof.

Therefore, the tension member 2 is coupled to the predetermined force by the wedge 50 and supported by the spring 20, and the tension member is in a situation other than the tension situation of the tension member 2 and the removal state of the tension member 2. (2) to prevent the anchorage from separating.

Figure 4 (b) is a view showing the internal state during the tension of the tension member 2, the state shown in the figure is shown in the state in which the tension member 2 and the anchorage as shown in FIG. It is an internal state when it installs and tensions the tension material 2.

In detail, when the tension member 2 is pulled in the direction of the arrow with a large force enough to compress the spring 20, the wedge 50 inserted into the wedge insertion hole of the wedge support 30 is inserted deeply into the wedge insertion hole. As it is further retracted and bites the distal end of the tension member 2 with a greater force, the wedge support 30, the wedge 50, and the snap ring fixing part 60 are moved as much as the spring 20 is compressed. The snap ring opening part 64 of the snap ring fixing part 60 is inserted into the snap ring inserting groove 90 by the movement of the snap ring fixing part 60 and then exits from the snap ring 70 having a fixed position. The outer diameter of the 70 is reduced, and eventually the snap ring 70 comes out of the snap ring insertion groove 90. The snap ring 70 is removed from the snap ring insertion groove 90 is dropped into the inner space of the upper cylinder 80 by gravity.

That is, the snap ring 70 which fixes the position of the wedge 50 at the time of tensioning of the tension member 2 is removed by gravity.

5 is a view showing a state during the removal process of the tension member of the tension member removal anchor is removed snap ring by the present invention gravity. In FIG. 5 (a), the tension member 2 is tensioned as described in FIG. 4 b, and the snap ring fixing part 60 moves while the spring 20 is compressed by the tension of the tension member 2. The snap ring 70 is drawn out of the snap ring insertion groove 90 and shows the state dropped by gravity to the inner space of the upper cylinder (80).

5 (b) is not shown in the figure to remove the tension member 2 in a state in which the tension member 2 is tensioned as shown in FIG. When the fixing is released, the wedge support part 30 is moved by the crimped spring 20 by the length of the jaw 34, and the recognized tension member 2 is instantaneously generated by the repelling force. And the snap ring fixing part 60 comes out of the wedge support 30. Then, as shown in FIG. 5 (c), the wedge 50 for pressing the distal end portion of the tension member 2 and the snap ring fixing part 60 and the snap ring 70 coupled to the wedge 50 are both upper cylinders. It is located in the inner space of 80 by gravity, and it becomes a state which cannot press the terminal part of the tension material 2 again. In this state, the tension member 2 is removed.

Figure 6 is a view showing that the fastening groove is formed in the upper cylinder of the tension member removable anchorage to remove the snap ring by the present invention gravity. As shown in FIG. 6, the rotational groove 100 of the fastening device is inserted into the center of the outer closed surface of the upper cylinder 80 to form a fastening groove 82 to which the fastening device can be fastened. The fastening groove 82 is coupled to the lower cylinder 10, the central cylinder 40 and the upper cylinder 80, the lower cylinder 10, the central cylinder 40 and the upper cylinder 80 is loosely coupled When the lower cylinder 10 is fixed, and the fastening device 100 is fastened to the fastening groove 100 of the fastening device 82 of the upper cylinder 80 to operate the fastening device, the fastening part 100. The upper cylinder 80 and the middle cylinder 40 by the rotation of the rotation is coupled to each other.

As described above, the tension member removing anchorage in which the snap ring is removed by gravity of the present invention is released from the snap ring insertion groove as the snap ring fixing part exits from the snap ring when the tension member is tensioned, and then falls down by gravity, and then the tension member At the time of removal, the wedge escapes from the wedge support and cannot restrain the tension member. Therefore, the tension member can be separated from the anchorage.The structure is simple, and the tension member removal function, which is an important function of the anchorage, can be smoothly performed. This can increase the removal rate.

In addition, by forming a fastening groove that can be coupled to the rotating portion of the fastening device in the upper cylinder to reduce the time required for assembly by allowing the lower cylinder, the central cylinder, the upper cylinder to be assembled at the same time by the fastening device. By adding a waterproof ring between the lower cylinder and the central cylinder and between the central cylinder and the upper cylinder, there is an effect of preventing water from seeping into the inside.

Furthermore, the production cost can be reduced by simplifying the structure of the anchorage and reducing the assembly time.

Although the present invention described above has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and changes are possible within the technical scope of the present invention, and such modifications and modifications belong to the appended claims. .

Claims (3)

In the tension member removing anchorage that restrains the distal end portion of the straight tension member to engage with the tension member or separates from the tension member by releasing the restraint of the distal end portion of the tension member A lower cylinder 10 having a cylindrical shape in which an inner space is formed, and having a central insertion hole 12 into which the distal end of the straight tension member is inserted, and the other side of which is opened to form a coupling site for a predetermined coupling; A spring 20 installed in the inner space of the lower cylinder 10 to provide a predetermined elastic force; The jaw (34) is mounted on the spring (20), and forms a wedge insertion hole (32) in the center in the shape of a cylinder, and protrudes along the outer diameter surface at the outer end surface of the surface in contact with the spring (20). Forming a wedge support 30; The upper and lower sides opened in a cylindrical shape with the upper and lower sides opened to form coupling portions for predetermined coupling, respectively, and the inner diameter allows the wedge support 30 to be inserted and at the same time the jaw of the wedge support 30. 34) is formed so that the spring 20 is inserted, the wedge support 30 is coupled to the other side coupling portion and the other side of the lower cylinder 10 in the state raised on the spring 20 Central pain (40) for binding sites; A wedge 50 inserted into a tapered wedge insertion hole 32 formed in the wedge support 30 to constrain the straight tension member, and an upper side of the wedge 50 forming a coupling jaw 52 coupled to the snap ring fixing part; Snap ring fixing part that forms a snap ring opening part 64 for engaging the snap ring in a state where the snap ring is opened by making the outer diameter larger than the inner diameter of the snap ring and the coupling jaw 52 engaging the coupling jaw 52 of the wedge 50. 60; A snap ring 70 mounted on the snap ring opening portion 64 of the snap ring fixing part 60; And One side is closed in the cylindrical shape having an inner space, the other side is opened to form a coupling portion for a predetermined coupling to combine the coupling portion and the other side coupling portion of the central cylinder 40 snap ring insertion groove ( Tension member removal type anchorage which is removed by the gravity ring, characterized in that it comprises a ;; The method of claim 1, And a waterproof ring inserted between the coupling portion of the lower cylinder 10 and the central cylinder 40 and between the coupling portion of the central cylinder 40 and the upper cylinder 80. Tensile removal anchorage in which the snap ring is removed by According to claim 1, wherein the upper cylinder (80) And a fastening groove 82 for engaging with the rotating part of the external fastening device. The tension member removing anchorage of which the snap ring is removed by gravity.

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