KR101237749B1 - Propulsion unit head that is used in shield method - Google Patents

Abstract

The present invention is the tip guide (1), which is located at the rear of the tip guide (1) and the tip shoe (2) having a larger diameter than the tip guide (1) and alternately installed on the edge of the tip shoe (2) Three cutters 25 and three shredding opener bits 26 and through holes provided at the edges of the tip shoe 2 to discharge the shredded material to the rear surface of the cutter 25 and shredding opener bits 26 ( The head of the propulsion device used in the shield method consisting of 27).

Description

Propulsion unit Head that is used in shield method}

The present invention excavates the ground while rotating the cutter head of the front of the excavator by a method of excavating the tunnel in a non-adhesive way through the mechanical equipment to the difficult part of the installation method for installing the sewer pipe or water pipe in the basement The head of the propulsion device used in the shield method used in the method of moving forward the entire propulsion pipe by the pressure jack installed in the vertical sphere in a repeated process to retract the relaxed main pressure jack and install the propulsion pipe in the space. It is about.

In general, the semi-shield method uses mechanical equipment to install parts that are difficult to install in open areas such as places with large underground water or underground obstacles when constructing pipelines or tunnels such as electric power, communication, water, and gas. It is a method of excavating a tunnel through a non-removable method through which the cutter head on the front of the excavator rotates to excavate the ground, and it is a repetitive process of installing the propulsion pipe in the space by retracting the relaxed main jack and installing it in the vertical sphere. The whole propulsion pipe is flowed by the jack jack, and it is a forward method.

If you look at the general propulsion method of foreign countries, the method of propelling the propulsion pipe from 800mm to 3400mm sequentially by the hydraulic jack installed in the forward base can be divided into manpower excavation propulsion method and semi-shield method (mechanical combined propulsion method). have.

In the case of the manpower excavation propulsion method, it is a method of attaching a blade or shield blade to the tip of the propulsion pipe, and excavating the earth and sand by manpower, injecting the propulsion pipe into the hydraulic jack, and laying the pipe main body in the ground.

 First, the open (round) propulsion method attaches a blade to the tip of the pipe, and excavation work of the soil is carried out by manpower. The excavated soil is transported in a pipe by a truck and taken out of the forward base. In the forward base, hydraulic jack, reaction wall, rail, and square rod are used to propel the pipe body. The ground of the excavation target is open because the end of the pipe is open. If the ground is difficult to stabilize, the auxiliary method such as chemical injection method is used in parallel, but this method is not applicable to aquifer fluid sand. This construction method is applied to construction sites of 30m to 70m, which has a relatively short driving distance.

 Second, the medium pressure jack propulsion method has been gradually spread and the necessity of long-distance propulsion has increased, so the propulsion method using the medium pressure jack has been developed. This is limited to the axial resistance of the pipe to be propulsion and the allowable reaction of the reaction wall, but the propulsion resistance increases as the propulsion distance increases. Above this driving distance, a medium pressure jack is installed in the middle of the propulsion pipe to reduce the thrust pressure of the open pressure jack of the open hydraulic propulsion system.

Third, as the propulsion technology is developed, the curve propulsion method increases the ratio of long-distance propulsion and inevitably needs to perform the curve propulsion. The difference between the straight line propagation and the straight line propagation is that it is difficult to survey (it is necessary to carry out surveying equipment with the inside of the pipe), and it is easy to damage the pipe due to the unbalanced load on the connection surface of the pipe. It is necessary to stabilize the excavated ground larger than the outer diameter, and it is difficult to change the direction of the blade of the tip of the propulsion pipe and it is easy to be zigzag-type.

If you look at the semi-shield method,

First, the Nisu pressurized propulsion method: This method is a closed mechanical excavation shield method, which has a partition wall between the excavation shield and fills the mud with the excavation shield side. The excavation of the shield is carried out by the action of the film (mud-film), and the earth and sand are sent through the pipe together with the mud water to the sewage treatment plant to separate the soil and water. Nisu containing separated particles is sent to the shield for circulation.

Second, the earth pressure balance propulsion method is a method of excavating the machine while preventing the collapse of the ground by generating earth pressure in the bulkhead with the shield and the bulkhead like the nisu pressurized propulsion method. Xantre is excavated with a screwconvayor and discharged out of the forward base by a truck.

In the case of the country, most of pipe line construction such as water and sewage, communication, electric power, city gas performed by open construction method until now. However, the excavation of the pipeline by excavating the inner city center is not only difficult for traffic, but also easy for roads due to various complaints. Excavation itself is becoming increasingly regulated. In particular, there are strict regulations on the method of laying excavation in widespread roads, busy streets, dense and adjoining areas, and pipeline construction such as vehicle-only roads, highways, railroads, dikes, and river crossings. There is a situation. In the case of pipeline construction, which is newly constructed due to the increase of underground buried materials, the construction of deep underground underground is required. Due to such changes in the construction environment, the pipeline construction by propulsion drilling method is occupying a lot of market share in Korea.

Korean Registered Patent Publication No. 1004741840000 (20050222) includes an auger driver unit, an auger connection rod rotatably connected to the lower center of the auger driver unit, and the soil disassembled and assembled at the bottom of the auger connection rod. An auger screw rod performing an operation, an auger head attached to a lower end of the auger screw rod to perform an excavation operation, and a rotating apparatus installed directly below the auger driver unit while rotatably wrapping the auger connecting rod; The cylinder rod is supported on the lower end of the auger driver unit while the piston rod supports the hydraulic cylinder for supporting the rotary device, a casing rod surrounding the auger screw rod assembled to the lower flange of the rotary device, and the casing rod. A retaining pin for holding the bottom of the sheet pile on the lower side and a sheet pile on the upper side of the casing rod In what is it consists of a clamp device to hold on to the top,

A sliding hollow pillar which is installed vertically at the center of the upper surface of the rotating device so as not to interfere with the rotation operation of the auger connecting rod connected to the auger driver unit; An anti-noise device allowing the auger connection rod to penetrate while being fixedly installed on the upper surface of the rotating device; A heavy hammer striking the seat pile while lifting up and down by sliding hollow columns while being installed above the noise preventing member; The sheet pile auger ride is disclosed that the sheet pile consisting of a hammer lift device for forcibly raising the hitting hammer to a desired height and then dropping it naturally to apply a force to the sheet pile at its own weight without noise.

The publication No. 1005634380000 (20060316) includes a leader installed vertically at the tip of a crawler crane that moves and stops on the ground independently, an auger machine installed on the leader, and a lower part of the auger machine. In the excavation rod which is assembled in the upper and lower multi-stage, and the ground excavation device for drilling the ground by connecting a hammer drill to the lower end of the excavation rod of the excavation rod,

The hammer drill has a plurality of protruding downwards long to enable the excavation operation of the soft ground and the weathered rock layer on the lower end of the piston protruding to the lower side of the outer case while the upper and lower reciprocating motion is mounted on the cylinder installed inside the outer case. Soft with a central side drilling bit and a plurality of wing side drilling bits protruding downwardly to enable the excavation operation of the soft ground and the weathered rock layer even at the bottom of the drilling blade formed on the lower outer periphery of the piston projecting to the lower side of the outer case. The hammer drill of the ground improvement method is described,

The publication No. 2003664280000 (20041022) includes a leader installed vertically at the tip of a crawler crane that moves and stops independently from the ground, an auger machine installed on the leader, and a lower part of the auger machine. In the excavation rod which is assembled in the upper and lower multi-stage, and the ground excavation device for drilling the ground by connecting a hammer drill to the lower end of the excavation rod of the excavation rod,

The hammer drill has a plurality of protruding downwards long to enable the excavation operation of the soft ground and the weathered rock layer on the lower end of the piston protruding to the lower side of the outer case while the upper and lower reciprocating motion is mounted on the cylinder installed inside the outer case. Hemmer having a center side drilling bit and a plurality of wing side drilling bits protruding downwardly to enable the excavation operation of the soft ground and the weathered rock layer even at the bottom of the drilling blade formed on the lower outer periphery of the piston projecting downward of the outer case. The drill is open,

Korean Laid-Open Patent Publication No. 1000120002289 (20120105) includes a lead pipe 10 to which a buried pipe 300 buried in the ground by a semi-shield method is connected; A propulsion head 20 coupled to the front of the lead pipe and receiving power to rotate the ground to form a conduit buried hole 1; A screw 30 mounted inside the lead pipe and connected to the rear of the propulsion head and discharging the slime excavated by the propulsion head to the outside; A packer 40 installed at the periphery of the propulsion head and expanding through the injection of fluid to be supported by the inner wall surface of the conduit buried hole to form a closed chamber at the periphery of the propulsion head; There is disclosed a conduit propulsion device capable of reinforcement of a conduit buried hole comprising a grout injection means 50 for reinforcing by injecting grout material into the chamber formed by the packer and lining the wall surface of the conduit buried hole.

Publication No. 10-2012-0065873 is installed on the reaction wall of the vertical sphere formed by excavating vertically from the ground, and is connected to the propulsion jack having a vibration generating portion, the basement to communicate a plurality of vertical spheres adjacent to each other A semi-shielding device including a driving pipe provided to excavate and one end connected to an excavating part, and the other end connected to a vibration generating part and provided with a vibration force from the vibration generating part to distribute earth pressure applied to the outer surface are disclosed. It can be seen that.

1. Domestic registered patent publication No. 1004741840000 (20050222) 2. National Registered Patent Publication No. 1005634380000 (20060316) 3. National Registered Patent Publication No. 2003664280000 (20041022) 4. Korean Patent Publication No. 1000120002289 (20120105) 5. Korean Patent Publication No. 10-2012-0065873

The conventional technique is suitable for excavating and improving a soft layer of mud flats or clay without rock because the head rotates by the rotational operation of the excavating rod, whereas a solid rock is embedded in the rock or Rather, if the strength is much weaker rock layer is the problem that the present invention to solve the rock or weathered rock layer only by the rotation operation of the head.

In order to solve the problems as described above, the present invention is a temporary construction pipe by excavating and crushing to advance the steel pipe by the propulsion device installed in the oscillation shaft to the head consisting of three cutters and crushing opener bits to advance the steel pipe at the same time The steel pipe is pushed and laid while transporting the ground and ground debris to the oscillation shaft by using a screw auger, and when the head arrives at the arrival tunnel, the head and screw auger are recovered from the oscillation shaft to clean the inside of the steel pipe, and then a new pipe is inserted. To provide a head of the propulsion device used in the shield construction method to terminate the grout is to solve the problem to be achieved by the present invention.

The present invention does not need to connect a hydraulic hose, electric wire, etc., it can be propelled by simply connecting the pipe and the auger, and can be easily constructed, and the work of crushing the entire excavation surface evenly is possible. It can greatly reduce the resistance and load on the head, and the speed of excavation and propulsion, and can be replaced immediately when the bit and cutter wears during propulsion, and can be used in both soft and hard rock layers. By doing so, there is an advantage that can greatly reduce the construction period and construction costs.

1 is an overall head view of a propulsion device used in the shield method of the present invention;
Figure 2 is a head detail of the propulsion device used in the shield method of the present invention
Figure 3 is a detailed side view of the head of the propulsion device used in the shield method of the present invention
Figure 4 is a detailed cross-sectional view of the head of the propulsion device used in the shield method of the present invention
5 and 6 the state of use of the head of the propulsion device used in the shield method of the present invention

In order to achieve the above object, the present invention is a front end guide (1), a front end shoe (2) having a larger diameter than the front end guide (1) and the front end guide (1), the front end shoe ( 3 cutters 25 and three shredding opener bits 26 alternately installed at the edges of 2) and shredded at the edges of the tip shoe 2 and shredded at the cutters 25 and shredding opener bits 26. It relates to a head of a propulsion device used in the shield method consisting of a through hole 27 is discharged material to the rear.

The present invention is excavated and crushed so that the construction pipe installed on the ground by the propulsion device installed in the oscillation shaft with the head consisting of three cutters and crushing opener bits and at the same time to advance the steel pipe screw augers the conventional construction pipe and ground debris The steel pipe is pushed and laid out to the oscillation shaft, and when the head arrives at the arrival shaft, the head and screw auger are recovered from the oscillation shaft to clean the inside of the steel pipe, and the new pipe is inserted into the shielding method for construction of the final grout. It is the head of the propulsion device used.

Cutter and shredding opener bits installed on the head of the present invention is installed in three pairs alternately on the edge of the head, the ground shredded material, such as temporary pipes and ground is discharged to the rear through the through hole installed on the edge of the head is installed on the rear It was discharged by the screw auger 50 installed in the screw shaft 51 to rotate forward while processing the crushed ground discharged from the oscillation shaft (B).

The front end guide 1 of the present invention is installed on the front side and the front end portion 11 and the groove is inclined toward the front side is installed in the groove, the edge of the groove is connected by a bolt connected to the end shoe (2) Consists of 2 to 4 tip guide connection (13),

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After inserting the screw shaft 51 in which the screw auger 50 is installed into the screw insertion groove 29 installed in the rear end of the tip shoe 2, the screw shaft 51 is inserted into the groove of the rear end guide 1. Insert the central end of the tip end shoe 21, and assembling it with 2 to 4 end guide connecting parts 13 installed at regular intervals on one side of the rear part of the middle part of the end guide with bolts, the end guide (1) and the tip shoe (2). Was assembled.
The tip shoe 2 of the present invention is the tip shoe central connection portion 21 protruding from the front center, three cutters 25 and three shredding opener bits 26 alternately installed on the front edge of the rim, Consists of the through hole 27 installed on the other side, and the screw shaft insertion groove 29 is installed in the rear center,
Bolted to three cutters 25 and three shredding opener bits 26 alternately installed on the front edge of the tip shoe 2,

Combination of the head used in the present invention is usually combined using a method widely used in the art, the propulsion device used a propulsion device widely used in the art, so a detailed description of the propulsion device will be omitted.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is an overall view of a head of a propulsion device used in the shield method of the present invention; FIG. 2 is a head detail view of a propulsion device used in the shield method of the present invention; FIG. 3 is a head side cross-sectional view of the propulsion device used in the shield method of the present invention. 4 is a detailed cross-sectional view of the head of the propulsion device used in the shield method of the present invention, and FIGS. 5 and 6 are heads of state of the propulsion device used in the shield method of the present invention. ), Tip shoe (2), tip guide front part (11), tip guide connection part (13), tip shoe central connection part (21), shredding open bit connection part (23), cutter connection part (24), cutter (25), Crush opener bit 26. Through hole (27), screw shaft insertion groove (29), screw auger (50), screw shaft (51), steel pipe (60), temporary pipe (100), propulsion device (300), ground (A), oscillation shaft ( B), it can be seen that the arrival tunnel (C).

Looking at the structure as shown in Figure 1 to Figure 3, the head of the propulsion device used in the shield method of the present invention is the front end guide (1), the front end guide (1) is located on the front end guide (1) Larger tip shoe 2, three cutters 25 and three shredding opener bits 26 alternately installed on the front edge of the tip shoe 2, and the edge of the tip shoe 2 Is installed in the cutter 25 and the shredding opener bit 26 is composed of a through hole 27 is discharged to the back of the crushed material,

The tip guide (1) is installed on the front and the front guide 11 and the groove is inclined toward the front is installed in the groove, the groove is connected to the edge of the groove by the bolt connected to the tip shoe (2) Consists of four tip guide connection (13),
The tip shoe 2 has a tip shoe central connection portion 21 protruding from the front center, three cutters 25 and three shredding opener bits 26 alternately installed on the front edge, and the other side of the edge. It can be seen that it consists of a through-hole 27 installed in, and a screw shaft insertion groove 29 installed in the rear center.

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Explain the state of use,

5, the oscillation shaft (B) is installed in the place where the steel pipe 200 is to be constructed, and then the propulsion device 300 is installed, and then the center of the temporary pipe 100 installed in the ground (A) to be propelled. To install the head of the present invention to advance the head to a predetermined distance, push the temporary pipe 100 to the arrival shaft (C) or crush the temporary pipe 100 together, to construct the steel pipe 200 on the ground As a method, propulsion of the head is as follows.

Install the steel pipe 60 in the cylinder front of the propulsion device 300 on the rear of the head, the screw auger 50 connected to the screw shaft 51 is installed in the steel pipe 60 to operate the propulsion device 300 , Advancing the steel pipe 60 and at the same time the screw shaft 51 is rotated and at the same time the head of the present invention connected to the screw shaft 51 is rotated forward (at this time, the steel pipe 200 in the oscillation shaft (B) To connect, but to reverse the cylinder may be connected by welding the next steel pipe 200 and the inserted steel pipe.

Precisely set the direction with the tip guide (1) inclined toward the front, and advances while crushing the ground with three cutters (25) and crushing open bit (26) installed on the tip shoe (2), but the arm of the crushed ground When the back is discharged to the rear through the through hole 27 of the tip shoe 2, the back is discharged to the rear by the screw auger 50 installed on the screw shaft 51, and the ground is shredded in the oscillation shaft B to process the ground. When rotating and advancing so as to reach the arrival shaft (C), the propulsion unit is operated in reverse to recover the screw auger (50) and the head connected to the screw shaft (51) in the oscillation shaft (B) and the inside of the steel pipe (200). After the washing, the new pipe is inserted into the inside of the steel pipe 200 is to be used to perform the termination grout.

Tip guide (1), tip shoe (2), tip guide front part (11), tip guide connection part (13), tip shoe center connection part (21), crush opener bit connection part (23), cutter connection part (24), cutter 25, the crush opener bit 26; Through hole (27), screw shaft insertion groove (29), screw auger (50), screw shaft (51), steel pipe (60), temporary pipe (100), propulsion device (300), ground (A), oscillation shaft ( B) Arrival Tunnel (C)

Claims (1)

The head of the propulsion device used in the shield method
Tip guide 1, a tip shoe 2 located at the rear of the tip guide 1 and having a larger diameter than the tip guide 1, and three cutters alternately installed at the edge of the tip shoe 2; 25 and three shredding opener bits 26 and through holes 27 installed at the edge of the tip shoe 2 to discharge the shredded material into the cutter 25 and shredding opener bits 26 to the rear surface. Is composed,
The tip guide (1) is installed on the front and the front guide 11 and the groove is inclined toward the front is installed in the groove, the front end guide connected by a bolt connected to the tip shoe (2) at the edge of the groove Consists of a connecting portion 13, The front end shoe (2) is the front end shoe central connection portion 21 is provided to protrude in the front center, three cutters 25 and three shredding opener bits (alternatively installed on the front edge) ( 26), the head of the propulsion device used in the shield method, characterized in that it comprises a through hole 27 installed on the other side of the rim, and the screw shaft insertion groove 29 is provided in the center of the rear.

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