KR20220051658A - Pile connecting device - Google Patents

Abstract

The present invention relates to a pile lifting device (100), which is lowered in close contact with the inner wall of a pile, thereby enabling the pile to normally and safely be lowered in a balanced manner during lifting. The pile lifting device comprises: a main shaft (140) having an upper portion with a fixed ring (141) for holding on a lift, and having a vertically long installed lower portion; a plurality of auxiliary shafts (150) installed close to the main shaft (140), having fixed rings (151) for holding on the lift, and for guiding the main shaft (140); and a lifting extension means (200) installed on the main shaft (140) and the auxiliary shafts (150) to lift the pile while being in close contact with the wall surface of the pile by a spreading force due to the operation of the lift.

Description

File lifting device {PILE CONNECTING DEVICE}

The present invention relates to a pile lifting device. Specifically, the present invention relates to a pile lifting device that allows the pile to be lowered safely and in a balanced manner during lifting by lowering the lifting device in close contact with the inner wall of the pile.

In general, in the civil engineering foundation construction stage, pile construction that can support a structure or a building by driving several piles into the ground is made. In order to construct such a pile, it is necessary to lift the pile to a desired location, and various methods and various devices are used to lift the pile.

Looking at the conventional pile lifting method, when the top of the pile is exposed from the ground, a method of utilizing a lifting lug at the top of the pile was used. Specifically, it is possible to lift the file by installing a lifting lug at the top of the file, lifting the file through a lifting machine, and then separating the lifting lug. As such, when the upper end of the pile is exposed to the ground, it is possible to lift the pile through the lifting lug because it is easy to install and separate the lifting lug.

However, when the top of the pile is not exposed to the ground and the pile is constructed underground, there is a problem in that it is difficult to lift the pile using a lifting lug. When lifting the pile underground, a lifting method called a workman is used, which refers to the distance between the workman and the pile to fall underground. For example, if the depth of the drilling hole is 40m and the length of the pile is 30m, the pile must fall 10m underground to reach the bottom of the drilling hole, and the drilling hole is 10m. The general drilling hole is 1 to 10m, and there are cases where a 15m long drilling hole is formed.

In the case of using the method of workmanship, since the upper end of the pile is not exposed to the ground, there is a problem in that it is difficult to use the lifting lug.

When the pile enters the drilling hole, there is no way to separate the lifting lug attached to the pile from the inside of the drilling hole. method is used

In the tie-in method, the wire is tied at the top of the file in a noose type, and then the file is lifted by connecting the wire to a lifting machine.

When the file is lifted to a desired location, the file is free-falling into the hole while unwinding the wire tied in the form of a snare through the lifting machine. (Since the wire is not fully coupled to the pile, but is temporarily coupled, if you rotate the wire through the lifting device or give it vibration, the wire will loosen and the pile will fall freely.)

However, if the pile is dropped in this way, there is a risk that the pile may be damaged by the workmanship. In particular, depending on the weight of the pile and the length of the drilling hole, the tip of the pile is damaged or broken, which causes a problem of lowering the bearing capacity of the pile. In addition, if the length of the drilling hole is very long, it is inappropriate to use the tie-in method, and there may be a problem that the file is locally damaged, such as the portion of the pile to which the wire is tied is deformed.

Therefore, as a method to solve the above problems, domestic patent registration No. 10-2131267 "Pile lifting device" was developed.

Looking at its configuration with reference to FIG. 1 or FIG. 2, it includes a disc-shaped lug 10 coupled to a PHC pile or a steel pipe pile, and a lifting lug 20 connected to the disc-shaped lug 10, and the disc-shaped The lug 10 includes a body portion 11 made of a ring-shaped plate having a lug hole 11a formed therein; and the body portion 11 protrudes from the body portion 11 toward the lug hole 11a, and and a plurality of coupling portions 12 having open insertion grooves 12a formed therein, wherein the coupling portion 12 includes a first side portion 12e extending downward and the first side portion 12e ) extending from the first upper portion 12b, the second side portion 12c extending downward from the first upper portion 12b, and the second side portion 12c extending from the second side portion 12c toward the lower portion while forming a slope It includes an inclined portion 12d, and on the side surface of the first side portion 12e, it is possible to open and close the insertion groove 11a through an up and down slide movement while extending to a lower portion of the first side portion 12e. An opening/closing unit 14 is provided, and a hinge is provided at an intermediate portion of the opening/closing unit 14, and the opening/closing unit 14 is rotatable only in the outer direction of the insertion groove 12a with the hinge as the center, and the It is configured not to rotate in the inner direction of the insertion groove (12a).

In addition, the lifting lug 20 coupled to the disk-shaped lug 10 is coupled to a lifting device 24 capable of lifting a PHC pile or a steel pipe pile, as shown in FIG. 1 (b) or FIG. 3 . A lifting part 21 provided with a lifting hole 21a that can become a lifting hole 21a, and the insertion groove 12a of the coupling part 12 protruding from the side surface of the lifting part 21 and formed in the disk-shaped lug 10 ) A plurality of protrusions 22 that can be fitted in the .

Therefore, the pile lifting device configured as described above connects the disk-shaped rig 100 to the pile 30 by welding or bolting, and then attaches the protrusion 22 of the lifting lug 20 to the disk-shaped lug 10. After being inserted into the insertion groove (12a) of the formed coupling portion (12), as shown in FIG. 3, a file operation was performed.

However, the pile lifting device as described above requires a disk-type rig to be installed on the pile as a separate item, and when using the lifting lug, the user accurately adjusts and fits it, and then the inconvenience of construction, the number of constructions, and the number of lifting rugs and the disk-type lug Separation was also inconvenient in that it took a lot of time.

In addition, Korean Patent Publication No. 10-2020-0106683 "Connecting Device for Lifting Pile" and Patent Publication No. 10-2017-0029934 "Pile Lifting Mechanism" and Korean Utility Model Registration No. 20-0467345 "Pile Lifting Structure", etc. However, these lifting devices have disadvantages in that they have a complicated structure and take a long time to install.

1. Korean Patent Registration No. 10-2131267 (published on July 1, 2020)

1. Korean Patent Publication No. 10-2020-0106683 (published on September 15, 2020)

1. Korean Patent Publication No. 10-2017-0029934 (published on March 16, 2017)

1. Korea Utility Model Registration No. 20-0467345 (published on May 31, 2013)

Therefore, the present invention is a method to solve the above problems, and as the lifting part of the lifting device is pulled by the traction device, at least three or more operating pieces are spread out toward the pile wall in a closed state, and the pile by the force of close contact A pile lifting device that can be lifted and lifted was proposed.

The present invention relates to a pile lifting device for lifting a plurality of piles into the ground to a desired location for pile construction that can support structures or buildings, etc.,

The upper part has a fixing ring for hanging from the lifting machine, and the lower part is a main shaft that is vertically long; and

The upper part has a fixing ring for hanging from the lifting machine, and the lower part is a main shaft that is vertically long; and

Lifting extension means installed on the main shaft and the auxiliary shaft so as to be in close contact with the wall of the pile by the force spread by the operation of the lifting machine to lift the pile;

is made up of

The extension means;

a lifting plate having a first insertion hole into which the main shaft is inserted in the center, a plurality of first auxiliary insertion holes formed around the first insertion hole and into which the auxiliary shaft is inserted, and having at least two operating grooves on an edge thereof; and

each of the operation pieces rotatably installed by a hinge means in a plurality of operation grooves formed on the edge of the lifting plate; and

It has a second insertion hole into which the main shaft is inserted and a second auxiliary insertion hole into which the auxiliary shaft is inserted. Moving control plate for fixing to be in close contact with the wall;

characterized in that it consists of

In addition, an inclined surface is formed on the upper end of the movement control plate, one end of the operation piece is fixed to the operation groove by a hinge means, and the other end is characterized in that a ring-shaped contact portion is formed.

In addition, the contact part is made of a tungsten cemented carbide super hard alloy,

The lifting extension means is characterized in that it is installed in plurality according to the length of the pile.

The pile lifting device of the present invention can securely lift a pile by a contracting or expanding operation, so that the pile can be easily installed or easily separated for construction, thereby reducing the construction period, and noise of the ground due to the fall of the pile, etc. and to prevent file corruption.

1 to 3 are views showing a conventional pile lifting device,
Figure 1 (a) is a view showing a disk-shaped lug, (b) is a view showing a lifting lug.
Figure 2 is a plan view of the disk-shaped lug, Figure 3 is a view showing the construction state of the pile lifting device.
4 (a) to (f) is a view showing a state in which the constituent parts constituting the pile lifting device according to the present invention are listed,
(a) is a view showing a lifting plate, (b) is a movement control plate, (c) is a view showing an operating piece, (d) is a main shaft, (e) is an auxiliary shaft, (f) is It is a drawing showing each of the hinge means.
5 (a) and (b) are views showing a pile lifting device according to the present invention, (a) is an overall perspective view of the pile lifting device, (b) is a pile lifting device is shown in the mounted state in the pile It is a drawing.
6 (a) to (c) is a view showing the operation of the file lifting device according to the present invention,
(a) is a view showing a state in which the pile lifting device is lifted, (b) is a view showing a state in which the operating piece is spread left and right in a state in which the pile lifting device is inserted into the pile, and is in close contact with the file, (c) is a drawing line It is a view showing the state in which the main shaft is lowered by lowering in a state in which the ball is lifted by pulling the ball, and the operating piece that is in close contact with the inner wall of the pile is released by this lowering.

Hereinafter, based on the accompanying drawings, the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

In addition, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor appropriately defines the concept of the term in order to best describe his invention. Based on the principle that it can be done, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

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

The present invention is a pile lifting device 100 for lifting several piles into the ground to a desired location for pile construction that can support structures or buildings, etc.,

The present invention file lifting device 100 is configured as shown in (a) to (f) of FIG.

That is, in Fig. 4 (a) is a view showing the lifting plate 110, (b) is a movement control plate 120, (c) is a view showing the operation piece 130, (d) is the main shaft (140), (e) is a view showing the auxiliary shaft 150, (f) is a hinge means 160, respectively.

As shown in Fig. 4(a), the lifting plate 110 has a disk shape, and a first insertion hole 111 for inserting the main shaft 140 is formed in the center, and the first At least two or more first auxiliary insertion holes 112 are formed around the insertion hole 111 .

In addition, at least two or more operation grooves 113 are formed on the edge of the lifting plate 110 .

The operation groove 113 is a substantially "C"-shaped groove, and as shown in FIG.

As shown in FIG. 4(b), the movement control plate 120 has a disk shape, and a second insertion hole 121 for inserting the main shaft 140 is formed in the center, and the second At least two or more second auxiliary insertion holes 122 are formed around the insertion hole 121 .

In addition, when viewed from the side, an inclined surface 122a is formed on the upper portion of the movement control plate 120 .

In addition, the actuating piece 130 shown in FIG. 4(c) has a long rod shape, and is a screw groove 113a of the actuating groove 113 formed at the edge of the lifting plate 110 by a hinge means 160 at one end. ) is formed with a hole 131 for coupling to, the other end is formed with a ring-shaped contact portion 132.

In this case, the contact portion 132 is preferably made of alloy steel having excellent wear force, and to realize this, it is also preferable to use a tungsten cemented carbide super hard alloy.

In addition, the operation piece 130 is formed to match the number of operation grooves 113 formed on the edge of the lifting plate 110 .

In addition, as shown in (d) or (e) of FIG. 4, the main shaft 140 and the auxiliary shaft 150 are fixed rings ( 141) and (151), the lower part is vertically long and is composed of a threaded body (142), (152).

At this time, the fixing rings 141 and 151 may be separately manufactured and screw-fitted, or may be processed integrally.

In addition, the lifting plate 110, the movement control plate 120, the operation piece 130, the main shaft 140, and the auxiliary shaft 150 are main components of the extension means 200 for operating the present invention.

The expansion means 200 is more specifically, as shown in Fig. 4 (a) or Fig. 6 . The main shaft 140 is inserted into the first insertion hole 111 and the second insertion hole 121 formed in the center of the lifting plate 110 and the movement control plate 120 and is fixed by the nut 170 .

In addition, the auxiliary shaft 150 is inserted into the first and second auxiliary insertion holes 112 and 122 formed in the lifting plate 110 and the movement control plate 120 , and is fixed by the nut 170 .

For example, as shown in FIG. 6 , the main shaft 140 is fastened to the upper and lower portions of the movement control plate 120 by nuts 170 , and the auxiliary shaft 150 is the upper and lower portions of the expansion plate 110 . , The nut 170 is fastened to the lower part.

At this time, the nut 170 fastened to the upper part of the main shaft 140 is an adjustment nut for providing an allowance for movement of the ball 142 installed on the main shaft, and the ball 142 is hung from the traction line 143 to hold the traction line. When it is pulled and released, it falls freely and serves to hit the upper surface of the nut 170 .

On the other hand, in the operation groove 113 formed on the edge of the lifting plate 110, the operation piece 130 is rotatably fixed by the hinge means (160).

In addition, a movement control plate 120 is positioned between the actuating pieces 130, and as the main shaft 110 rises, the actuating piece 130 is set with the hinge means 160 as a point, and one end is on the wall of the pile. It is configured to be tight.

At this time, the lifting extension means 200 is installed in plurality according to the length of the pile.

The pile lifting device 100 configured as described above is inserted into the pile as shown in FIG. 5(b) to lift it.

This will be described in detail with reference to FIGS. 6 (a) to (c) as follows.

First, a hook (not shown) of the lifting machine (not shown) is attached to the fixing ring 151 of the auxiliary shaft 150 .

Next, the auxiliary shaft 150 is fastened to the upper and lower portions of the lifting plate 110 by the nut 170 , so that the entire lifting device 100 is suspended during lifting.

At this time, another hook (not shown) hanging from the lifting machine is also hung on the main shaft 140 .

In the above state, the auxiliary shaft 150 is pulled using the lifting device 100 and inserted into the file as shown in FIG. 6(b).

Next, when the hook of the lifting machine hung on the fixing ring 141 of the main shaft 140 is pulled in the direction of the arrow a, as the main shaft 140 rises, the movement adjustment plate 120 also rises, and the movement adjustment plate ( The rise of 120 is by lifting one end of the operating piece 130 in contact with it, so that it opens in the direction of the arrow b, so that the contact portion 132 formed on one end of the control plate 120 is fixed in close contact with the inner wall surface of the pile.

At this time, the lifting extension means 200 installed in plurality are fixed in close contact with the inner wall surface of the pile by performing the same operation at the same time.

In the same state as described above, after lifting and sitting at the construction position, as shown in FIG. When the pulling line 143 is released after being pulled in the c direction by the arrow, the ball 142 hanging from the pulling line 143 freely falls in the arrow d direction while the nut 170 fastened to the upper surface of the main shaft 140. ), and the main shaft 140 descends downward by the movement of the nut 170 .

By the lowering operation of the main shaft 140, the actuating piece 130 is operated in the direction of the arrow e to stop at the original position.

In the above state, the lifting device 100 can be removed from the pile by pulling the hook of the lifting machine hanging from the auxiliary shaft 150 .

At this time, when the file is buried shallowly, by lightly pressing or hitting the upper end of the nut 170 fastening the main shaft 140 using a separate stick or the like, the operation piece 130 is rotated to the original position with the rotating means 160 as a point. that can be returned to

So far, the present inventors have looked at the file lifting device, but it is obvious that various implementation modifications are possible within the limits that do not depart from the scope of the present invention.

And it should be understood that the above-described embodiments are illustrative in all respects and not restrictive, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and their All changes and modifications derived from the concept of equivalents should be construed as being included in the scope of the present invention.

100: pile lifting device 110: lifting plate
111,121: insertion hole 112,122: auxiliary insertion hole
113: operation groove 113a: screw groove
122a: inclined surface, 130: operating piece
140: main shaft 150: secondary shaft
160: hinge means 170: nut

Claims (6)

In the pile lifting device for lifting several piles into the ground to a desired location for pile construction that can support structures or structures,
The upper part has a fixing ring for hanging on a hook installed in the lifting machine, and the lower part is a main shaft which is installed vertically long; and
a plurality of auxiliary shafts installed in a position close to the main shaft and having a fixing ring for hanging on the other hooks of the lifting machine; and
Lifting extension means installed on the main shaft and the auxiliary shaft so as to be in close contact with the wall of the pile by the force spread by the operation of the lifting machine to lift the pile;
File lifting device, characterized in that consisting of.
The method of claim 1,
The extension means;
a lifting plate having a first insertion hole into which the main shaft is inserted in the center, a plurality of first auxiliary insertion holes formed around the first insertion hole and into which the auxiliary shaft is inserted, and having at least two operating grooves on the edge; and
each of the operation pieces rotatably installed by a hinge means in a plurality of operation grooves formed on the edge of the lifting plate; and
It has a second insertion hole into which the main shaft is inserted and a second auxiliary insertion hole into which the auxiliary shaft is inserted. Moving control plate for fixing to be in close contact with the wall;
File lifting device, characterized in that consisting of.
3. The method of claim 2,
Pile lifting device, characterized in that the inclined surface is formed on the upper end of the movement control plate.
3. The method of claim 2,
One end of the operation piece is fixed to the operation groove by a hinge means, and the other end is a pile lifting device, characterized in that the ring-shaped contact portion is formed.
5. The method of claim 4,
The close contact portion is a pile lifting device, characterized in that made of a tungsten cemented carbide super hard alloy. The method of claim 1,
The lifting extension means is a pile lifting device, characterized in that installed in plurality according to the length of the pile.

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