KR102521610B1 - Multi casing perforation device - Google Patents

Abstract

The present invention relates to a multi-casing perforation (M.C.P) device, which has the structure of a conventional drilling device, but multi-axis augers are embedded in one box casing, thereby drilling the ground widely with a multi-axis auger at once and simultaneously drilling the ground one at a time. It relates to a drilling device used in an integral casing method or a separate casing method by inserting a box casing of.

Description

Multi-use casing perforation device {MULTI CASING PERFORATION DEVICE}

The present invention relates to a multi-casing perforation (M.C.P) device, which has the structure of a conventional drilling device, but multi-axis augers are embedded in one box casing, thereby drilling the ground widely with a multi-axis auger at once and simultaneously drilling the ground one at a time. It relates to a drilling device used in an integral casing method or a separate casing method by inserting a box casing of.

In general, a ground drilling device is a device for drilling the ground for inserting piles and placing piles to form the foundation of a structure, and includes an auger to drill the ground.

At this time, when drilling the ground with the auger of the ground drilling device, there is a drilling device that inserts the casing at the same time as the ground drilling with the auger so that the drilling wall formed by the drilling is maintained. There are DRA (Double Rod Auger), PRD (Precution Rotary Drill), CIP (cast in concrete pile), and SAIP (Special auger & soil cement injected precast pile). .

Methods that improve convenience, economy, and efficiency are being developed in such a drilling device. For example, in Korean Patent Registration No. 2091691, the casing is pulled out by coupling the head part and the casing or adjacent casings by a key and a key groove. It does not separate even when rotated in the opposite direction of the screwing direction when the casing is pulled out, thereby preventing the collapse of the groove formed by the screw by rotating in the opposite direction when the casing is pulled out, and as a result, a "screw casing that can improve the ground reinforcement effect. An improved drilling device using the same and an earth anchor method using the same" have been posted.

As another example, in Korean Patent Registration No. 992513, the steps of drilling a vertical center hole for drilling a large-diameter pile inlet hole and repeatedly drilling a vertical expansion hole around the vertical center hole, In the hole drilling step, a casing for securing bearing capacity and an incase for blocking air are inserted, respectively, and after the individual drilling of the vertical expansion hole is completed, the casing and incase are removed while backfilling is performed, Thereafter, as the backfill removal using large-diameter screws and grabs, the large-diameter casing insertion process, and the rock wall preparation process of removing the remaining rock walls of the previously drilled rock mass are performed, it is possible to significantly reduce the drilling time for large-diameter drilling and drilling of the rock layer. Even when drilling, the load and frictional force applied to the drilling equipment are relatively reduced, reducing damage or damage to the equipment to extend its service life. "Expanded large-diameter pouring method by multi-casing drilling" is posted, which is more effective for large-scale civil engineering works such as bridges and high-rise structures.

1. Registration number/date 1020916910000 (2020.03.16) 2. Registration number/date 1009925130000 (2010.11.01)

However, Korean Patent Registration No. 2091691 "Improved Drilling Device Using Screw Casing and Earth Anchor Method Using It" and Domestic Patent Registration No. 992513 "Drilling Device Used for Expansion Large-diameter Casting Method by Multiple Casing Drilling and Conventional Drilling Device In the method of inserting and forming the piles of the foundation one by one by drilling with one auger and inserting one casing at the same time, the wall construction process is lengthened, and there are problems such as the fact that steel materials can be installed only by picking the wall face.

In addition, in areas where there is a lot of inflow during wall construction, cement solution is not solidified due to the flow of inflow water, making it difficult to construct water barrier walls. There was a problem that it was difficult to match the error of verticality and spacing during insertion.

Therefore, in order to solve the above-described problem, in the structure of a conventional drilling device composed of a multi-axis auger, a single box casing in which all the rods of the multi-axis auger are embedded is formed, but clay holes are formed at regular height intervals on the front and rear surfaces of the box casing .

In addition, a vibrator is formed at the top of the box casing to facilitate insertion and withdrawal of the box casing, and a rod band for binding the rods of the multi-axis auger is constructed.

In addition, a guide is formed in the box casing in the height direction, and guide grooves and guide jaws corresponding to each other are formed on the guide and the rod band.

For this reason, the multi-purpose casing drilling device of the present invention has the effect of increasing work efficiency compared to the conventional drilling device in which one casing is inserted per auger by drilling the ground with a multi-axis auger and inserting one box casing at the same time. .

In particular, in a construction method in which a wall must be formed in the ground, such as a column-type earth retaining method, the effect of reducing the face picking process required in the conventional drilling device that inserts one casing per auger, and the effect of enabling construction even in areas with high inflow water there is

In addition, soil discharge is facilitated by the clay hole, which reduces the generation of waste and has a strong effect of cement loss without loss of cement. Effect, there is an effect of preventing the rods from escaping in the box casing due to the guide.

1 is a partial side cross-sectional view of a drilling device of the present invention;
Figure 2 is a front view and a partial front cross-sectional view of the box casing and the multi-axis auger of the present invention.
Figure 3 is a plan view of the box casing and the multi-axis auger of the present invention.

The multi-casing perforation (M.C.P) device of the present invention is composed of a box casing in which a multi-axis auger is embedded in the conventional perforation device structure in which a casing is inserted while drilling the ground with an auger, and the body of the perforation device After briefly explaining first, the box casing and the corresponding multi-axis auger, which are the characteristics of the present invention, will be described as follows.

First, the body 100 of the drilling device 1 is a body 100 of a conventional drilling device composed of an auger and a casing, and a top sheave 110 is formed at the top, and a pulley is lowered from the top sheave 110. The wire 111 and the sheave bundle 112 are composed, and the sheave wire 111 and the sheave bundle 112 are connected to the top of the box casing 200 and the multi-axis auger 300, and go under the top sheave 110. The box casing 200 and the multi-axis auger 300 are drilled, inserted, and pulled out.

Next, the box casing 200 is composed of a planar rectangular box structure in which the rods 310 of the multi-axis auger 300 are all embedded, and the guide grooves 211 in the height direction are formed on the inner surfaces of both left and right sides of the double row. Guides 210 are configured respectively.

In addition, at least three discharging holes 220 having a wider width than the entire width formed by the rods 310 of the multi-axis auger 300 are formed on the front of the box casing 200 at a predetermined height interval, and the hydraulic pressure at the top of the box casing 200 A vibrator 230 operating as is configured.

Next, the multi-axis auger 300 is a conventional multi-axis auger structure composed of a rod 310, a bit 320, a gearbox 341, and a motor 342, but it is preferably composed of three axes, and this multi-axis auger ( 300) are arranged in a row.

At this time, the shape of the multi-axis auger 300 inherent in the box casing 200 is such that the bit 320 protrudes from the bottom of the box casing 200, and the gearbox 341 and the motor 342 above the top of the box casing 200 is extruded

In addition, the rods 310 in the box casing 200 are composed of screw blades 311 and stirring blades 312, and a rod band 330 that binds the rods 310 of the multi-axis auger 300 is configured.

Here, the rod band 330 is a rectangular box structure in which rod holes 331 through which each rod 310 passes are formed, and the guide jaws corresponding to the guide grooves 211 of the box casing 200 on both left and right sides ( 332) protrude, respectively.

At this time, the guide groove 211 and the guide jaw 332 in the guide 210 of the box casing 200 and the rod band 330 of the multi-axis auger 300 have guide jaws in the guide 210, the rod band 330 ), a guide groove may be formed.

In addition, a plurality of rod bands 330 may be formed, but in the case of two rod bands, they are formed at the front end and the middle of the box casing 200.

The multi-purpose casing drilling device 1 configured in this way is a single box casing 200 while drilling the ground 2 in a row with the bits 320 of the multi-axis auger 300 and the outlets 321 of the bits 320. ) into the

At this time, the soil of the excavated ground 2 rides on the screw blades 311 and stirring blades 312 of the rods 310 and is moved from the inside of the box casing 200 to the top through the open clay hole 220 to the outside. is emitted with

In addition, when the box casing 200 is inserted and pulled out, the vibrator 230 is operated to smoothly insert and pull it out, and the rod band 330 prevents the rod 310 from bending due to the repulsive force when the ground 2 is drilled. and prevents the rods 310 from moving up and down in the box casing 200 by the guide 210.

In this way, the multi-purpose casing drilling apparatus 1 of the present invention drills the ground 2 with the multi-axis auger 300 and inserts one box casing 200 at the same time, thereby inserting one casing per auger. There is a feature that the work efficiency is increased compared to the conventional drilling device.

In particular, in a construction method in which a wall must be formed in the ground (2), such as the column-type earth retaining method, the face picking process required in the conventional drilling device in which one casing is inserted per auger is reduced, and construction is performed even in areas with high inflow water There are characteristics of this possible point.

In addition, it is easy to discharge the earth and sand by the earth and sand hole 220, which reduces the generation of waste and has strong strength without loss of cement. The band 330 prevents the rods 310 from bending, and the guide 210 prevents the rods 310 from escaping from the box casing 200 .

1: drilling device 2: ground 100: body
110: top sieve 111: pulley wire 112: pulley bundle
200: box casing 210: guide 211: guide groove
220: clay hole 230: vibrator 300: multi-axis auger
310: rod 311: screw wing 312: stirring wing
320: bit 321: outlet 330: rod band
331: rod hole 332: guide jaw 341: gearbox
342: motor

Claims (5)

In the drilling device for inserting the casing while drilling the ground with an auger,
The auger is composed of a multi-axis auger in which axes are arranged in a row, and a rod band binding each of these rods to each other is provided at the front end and the middle of the box casing, which will be described later, respectively,
The casing is composed of a box casing, which is a rectangular structure on a plane in which the rods of the multi-axis auger are embedded. Soils ascending by are discharged to the outside through the earthing hole of the box casing,
A vibrator is provided at the top of the box casing, and the vibrator is operated when the box casing is inserted and pulled out to smoothly insert and pull out the box casing,
Guides and guide grooves are formed on both inner surfaces of the box casing in the height direction, and guide jaws corresponding to the guide grooves of the box casing are formed on the side of the rod band of the multi-axis auger, so that the rods are bent by these rod bands. prevented, and the guide jaw of the rod band is guided by the guide so that it can move up and down,
A multi-purpose casing drilling device characterized in that it can drill the ground with a multi-axis auger and simultaneously insert a box casing with a rectangular cross section. delete delete delete delete

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