KR101715348B1

KR101715348B1 - piling apparatus of scrow pile

Info

Publication number: KR101715348B1
Application number: KR1020150090673A
Authority: KR
Inventors: 양홍준
Original assignee: 쥴온돌(주)
Priority date: 2015-06-25
Filing date: 2015-06-25
Publication date: 2017-03-14
Also published as: KR20170001821A

Abstract

A screw file construction apparatus according to the present invention is a screw file construction apparatus for constructing a screw file having a file body portion and a braid formed in a spiral shape on the outer circumferential surface of the file body portion in a ground, A screw member having a guide groove formed in a spiral direction of the screw member and coupled to a screw file for installation on a lower end side thereof, a main body portion having a bracket for screwing with the screw member, And a screw file inserting / extracting unit provided between the main body and the end of the screw member to provide a pulling-out and pulling-out force to the screw file so that the screw file can be pulled in and out with respect to the main body.

Description

[0001] The present invention relates to a piling apparatus of scrow pile,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file installation apparatus, and more particularly, to a screw file installation apparatus capable of increasing a frictional force with a ground during construction of a screw file used as a foundation file.

In general, when building a high-rise building or a reinforced concrete structure, the foundation is constructed by putting a PHC file or an H-beam on the ground to solidify the foundations. It is a very important construction for building structures.

As a method of constructing the above-mentioned file, there are known a piling method and an excavation method. In the piling construction method, a file is punched out using a weight chain hammer lifted by a hoisting rope on an upper part of a leader vertically installed in a crawler traveling device, a hammer is lifted by using compressed air of a compressor, To the ground. In the latter excavation method, a screw file attached to a file connection part is rotated to excavate the ground to form a pile hole, and then the screw file is reversely rotated to be pulled out of the excavated pile. It is a method of inserting a file for construction into the next file hole or using the intruded screw file itself as a ground reinforcement file.

On the other hand, in the case where the load of the building structure or civil structure on the ground is not relatively large, a helical file for supporting the structure is used. This helical file is a non-perforated / non-pitched pile that does not perforate the ground in advance.

As described above, a screw file in which a spiral braid is formed on the outer circumferential surface, or a screw file in which a plate bar is twisted in a helical shape has a structure in which the screw is simply applied to the ground using a rotational force or a load in the course of construction. The bearing capacity of the pile is limited by the frictional force with the ground.

An example of such a helical file is disclosed in Korean Patent Publication No. 10-0388263 (Jun. 19, 2003), and a method of constructing a screw file is disclosed in Korean Patent Publication No. 2012-0126703 (2012. 11.21) have. In addition, patent registration No. 1191286 (Oct. 10, 2012) shows a construction method of a double helical file for increasing the frictional force of the upper ground. Open Publication No. 2004-004961 discloses a technical structure of a basic file provided with a screw.

Such a screw file or a helical file is rotated at a relatively high speed while being transferred by a feed force within a pitch due to inconsistency between the pitch and the number of revolutions of the blade formed on the outer circumferential surface of the screw file during construction, There is a problem that the frictional force between the soil and the blade of the pile is relatively lowered and the supporting force of the pile is lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a conveying force at the same pitch as a pitch of a blade during construction of a screw file or a helical file, And it is an object of the present invention to provide a screw file installation apparatus capable of increasing the frictional force between the soil and the blade in the file construction area.

According to an aspect of the present invention, there is provided a screw file installation apparatus for installing a screw pile having a pillar and a blade formed in a spiral shape on an outer circumferential surface of the pillar,

A screw member having a spiral-shaped single or double guide groove formed in the spiral direction at the same pitch as the blade provided on the outer circumferential surface of the pile main body portion and having a pile-coupling portion to be engaged with a screw file for installation on the lower-

A main body screwed to the screw member and having a bracket for supporting the outer periphery thereof,

And a screw file take-in / take-out unit which is provided between the main body and the end side of the screw member and provides a pull-in and pull-out force to the screw file so that the screw file can be pulled in and out with respect to the body. .

In the present invention, the upper end portion or the main body portion of the screw member may further include a vibration generating unit for vibrating the screw member or the main body portion when the screw pile is applied.

The loading / unloading unit includes a support bracket installed on an end of the screw member and having a screw member rotatably supported on a side adjacent to a pile coupling portion to which the pile is coupled, And cylinders provided on the support bracket.

The file coupling part may include a head part screwed into the screw file, or a coupling flange coupled with a flange part provided on an upper end side of the screw file.

The apparatus for screw file construction according to the present invention provides the feed force at a pitch equal to the pitch of the blades formed on the outer circumferential surface of the screw file of the screw pile so that the soil of the pile construction area is tilled and the frictional contact force with the blade Can be prevented.

It is not necessary to re-file the file because the file can be used as a file of construction and Tomo Corporation and when the file is used as a ground file of a building or civil engineering building, the supporting force of the file is weakened, And safety accidents can be prevented.

1 is an exploded perspective view of a screw file construction apparatus according to the present invention,
FIG. 2 is a cross-sectional view of the screw file construction apparatus shown in FIG. 1,
3 is a side view showing a state in which a screw file is stuck by a screw file construction apparatus according to the present invention,
FIG. 4 is a partially cutaway sectional view showing a state in which a screw file according to the present invention is stuck to a ground; FIG.

The present invention relates to a construction apparatus for a screw pile, and an example thereof is shown in Figs. 1 to 4. Fig.

Referring to the drawings, a blade 102 formed at a predetermined pitch P2 (see FIG. 4) on the outer circumferential surface of a pile or rod-shaped file main body 101 to which a screw apparatus for a screw file according to the present invention is applied The screw file 100 is transported by the same feed force by the pitch of the blades 102 during rotation and is filed.

The installation device 10 of the screw file includes a screw member 20 in which a guide groove 21 having the same pitch P1 as the blade of the screw file 100 is formed as a single screw or a double screw, And a body portion 30 having a bracket 35 that can be engaged with a heavy equipment such as an excavator on the outer circumferential surface.

The end of the screw member 21 is further provided with a pawl engaging portion 25 for supporting the screw pawl 100 for screwing with the screw member 21. The engaging portion 25 may be formed as a drive flange for rotating the screw when the female screw portion is formed at the end of the chuck or screw pile 100 and when the flange is formed at the end of the male screw shaft portion or the screw pile, It is possible to have a structure capable of supporting the screw member and the screw file coaxially.

The main body 30 is screwed to the screw member 20 and rotated by an external force acting on the screw pile 100, that is, an external force applied by a take-in / take-out unit 40 described later. The length of the screw member 20 and the body portion 30 is substantially equal to or smaller than the length of the screw member 20 so that the screw member 20 can be stably guided when the screw member 20 is drawn in or drawn out. do. Preferably, the screw member 20 protrudes downward from the main body portion 30 to provide the peg-engaging portion 25, and the upper end of the screw member 20 protrudes from the main body portion 30, The unit 50 can be installed. The vibration generating unit is not specifically shown in the figure but may be an eccentric cam which is driven by a hydraulic motor using hydraulic pressure and installed on a drive shaft rotatably installed in the housing. However, the present invention is not limited thereto, and it is possible to provide a structure capable of vibrating the screw member 20 when the screw file is installed.

A screw pile loading / unloading unit (40), which is installed between the main body (30) and one end of the screw member (20) to pull in and out the screw member (20) A support bracket 41 is rotatably provided to allow the screw member 20 to be pulled out or drawn out to the side of the pawl engaging portion 25 of the main body 20. The rod 42a and 43a of the hydraulic cylinders 42 and 43 are provided on the outer circumferential surface of the main body 30 in such a manner that the support bracket 41 and the hinge Axis.

A guide rod 55 is slidably installed on the main body 30 in a direction parallel to the screw member 20. The upper end of the guide rod 55 is installed at the upper end of the screw member, (Not shown).

The operation of the screw file construction apparatus according to the present invention constructed as described above will be described below.

In order to construct the screw pile 100 forming the foundation of the building or structure using the screw pile construction apparatus 10 according to the present invention, as shown in Fig. 3, by using a quick coupler or a pin provided at the boom end portion of the excavator .

In this state, the boom frame is rotated to lift the construction apparatus, and then the flange of the screw pile 100 to be installed is engaged with the pile coupling part 25 provided at the end of the screw member 20, So that the screw file 100 is positioned coaxially (see Figures 3 and 4)

In this state, the screw file (100) is placed in an area to be installed, and the boom stand of the excavator is pressed in a state where the position of the pile installation device (10) is fixed. Then, the hydraulic cylinders 42 and 43 of the inlet / outlet unit 40 are driven to pull out the rods 42a and 43a, thereby rotating the screw member 20 and advancing it. Since the screw member 20 and the main body 30 are screwed together, the screw member 20 rotates when the screw member 20 is pulled out of the main body 30, Is equal to the depth at which the screw pile 100 is rotated while being rotated. Particularly, the feed amount of the screw member 20 is the same as the feed amount of the screw member 20 which is stuck on the ground due to the pitch of the blade 102 of the screw member 20. This is because the pitch of the blades and the pitch of the guide grooves 21 of the screw member 20 are the same, so that the amount of feed is also the same. In this process, the excavator prevents the screw pile installation device from being raised by the reaction force.

Therefore, the screw pile 100 installed on the ground is rotated and buried to the ground by a length corresponding to the pitch, so that the screw pile 100 is rotated forcibly to till the ground (a phenomenon in which the blade is excavated to an area where the blade is not located) Can be fundamentally prevented. In particular, since the blades are stuck to the ground as they are along the spiral, the frictional force with the ground can be prevented from being reduced, and the bearing capacity of the screw pile 100 can be improved.

If the screw member 20 and the screw pile 100 are vibrated by the vibration generating unit 50 when the drawing is not smoothly carried out by the soft rock or the gravel in the process of constructing the screw file, The insertion force can be improved.

As described above, the apparatus for screw file installation according to the present invention can prevent the ground from being excavated by rotating the spiral-shaped file such as the screw file 100 or the helical file by the pitch corresponding to the pitch of the spiral have. It is possible to fundamentally prevent the area where the file is installed by the file when the screw file 100 or the helical file is constructed from being fundamentally prevented, thereby increasing the frictional force between the ground and the file, thereby increasing the bearing capacity of the file.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

100: screw file
20; screw member
30,
40; an inlet / outlet unit
50; Vibration generating unit

Claims

A screw file (100) having a file body (101) and a braid (102) spirally formed on an outer circumferential surface of the file body (101)
A single or double guide groove 21 is formed in a spiral direction in the spiral direction at the same pitch as the blade 102 provided on the outer circumferential surface of the file main body portion 101 and a file A screw member 20 having a coupling portion 25,
A main body 30 screwed with the screw member 20 and having a bracket 35 for supporting the outer periphery thereof,
And is provided between the main body portion 30 and the end side of the screw member 20 to provide a pulling and pulling force to the screw file so that the screw file 100 can be pulled in and out while being rotated with respect to the main body portion 20 And an inlet / outlet unit 40,
The inlet / outlet unit 40 is provided at the end of the screw member 20 and is provided with a support bracket (not shown) on which a screw member 20 is rotatably supported, 41), and cylinders (42, 43) installed vertically to the main body (30) and provided with a rod on the support bracket (41).

The method according to claim 1,
A vibration generating unit 50 for vibrating the screw member 20 or the main body 30 when the screw pile 100 is installed is further provided on the upper end portion or the main body portion 30 of the screw member 20 Wherein the screw device is a screw device.

delete

The method according to claim 1,
Wherein the pile joining part (25) comprises a head part screwed to the screw pile (100) or a coupling flange coupled to a flange part provided on an upper end side of the screw pile (100) .