KR200419260Y1 - A beat for sewer pipe propeling unit - Google Patents

Abstract

The present invention relates to a bit for a conduit propulsion device, the purpose of which is to form a buried hole in the ground in accordance with the appearance of the buried pipe by the rotational force and the forward force of the bit, to prevent the wear of the equipment. .

The bite for a conduit propulsion device according to the present invention includes a cylindrical bit body (10) rotatably and protrudingly mounted to the distal end of the propulsion device and open toward the rear; A center bit 20 protruding from the front center of the bit body; A pair of first disc cuts 30 rotatably mounted on both sides of the center bit; A second disc cut (40) rotatably mounted while its outer periphery protrudes from the front and circumference of the bit body in a direction orthogonal to the first disc cut of the bit body; And a plurality of through bits 50 that are replaceably mounted to the outer circumferential surface of the bit body, wherein the through bits protrude from the outer circumferential surface of the bit body at the same height as the disc cut.

Sewer pipe, shield, propulsion, through bit, disc cut

Description

Bit for conduit propulsion unit {A BEAT FOR SEWER PIPE PROPELING UNIT}

1 is a perspective view of a bit for a conduit propulsion device according to the present invention.

Figure 2 is a mounting state of the bit for conduit propulsion device according to the present invention.

Figure 3 is a front view of the bit for conduit propulsion device according to the present invention.

4a to 4d is a propelling process diagram by the bit for the conduit propulsion device according to the present invention.

<Description of Signs for Main Parts of Drawings>

10: beat body, 11: reinforcement

20: center bit, 30, 40: disc cut

50: through bit, 200: propulsion device

210: lead pipe, 220: propulsion jack

230: screw, 300: buried pipe

The present invention relates to a bit for a conduit propulsion device, and more particularly to a bit for a conduit propulsion device to increase the efficiency of the drilling and to improve the durability of the equipment in drilling the buried hole in the ground.

In general, when laying various pipes such as water pipes, gas pipes, communication pipes, and oil pipes in the basement, the pipes are buried by excavating the ground according to the depth of the pipes. If the excavation with the ground open to be buried underground causes a lot of obstacles in traffic, and because the excavated soil must be piled up at the construction site, the accumulated soil occupies the road. In addition, the excavated soil is scattered in all directions around the construction site, and when there is water in the excavated soil, the muddy water flows to the road and contaminates the construction area. There is a problem that the train will not be able to pass during the construction period.

Also, even if the ground is excavated, the pipe is buried, and the ground is backfilled with the excavated soil, and then compacted, the ground cannot be firmly ground to the ground state before the excavation. The ground at the point where the pipe is buried will cause a variety of problems.

In addition, the ground excavation method as described above has a lot of manpower and time, there is an uneconomical problem that not only increases the construction period but also costs a lot of construction costs.

In the prior art, a method of digging a puddle on both sides of a road into a room for solving the problems of the above ground excavation method and then horizontally type the tube in the puddle and a method of hydraulically pushing it.

However, the former tube type is a method of pressing a steel pipe with a hammer or the like, and has been applied to type a relatively small diameter steel pipe in soft ground such as clay material with weak coking force, but the type direction of the steel pipe depends on the hammering direction. In addition to being changed, the tube that is typed is oriented to a weak ground resistance (reaction force) due to the phenomenon that the tube is not typed straight in the direction to be buried, but in a crooked direction. In the construction site to bury the pipes, the situation of evading the pipe blow method is avoided. Also, the larger the diameter, the larger the size and weight of the hammer. It is becoming.

The latter tube press-fit method pushes the pipe forward with a hydraulic cylinder and presses it into a relatively large diameter (approx. 600mm or more) on the ground with weak coking force. Not only did not press precisely into the bed, but also it was very difficult and time-consuming because the press-in of the steel pipe was very slow and the worker had to go into the steel pipe while laying down and carry out the clay work to discharge the soil flowing into the steel pipe. It was pointed out that the construction cost is high and the air becomes longer because it takes a lot of time and manpower to dispose of the soil.

Another conventional technique is a semi-shelled process, in which water is sprayed while rotating the bit at the tip of the tube, pushing the tube while scavenging the soil.

Since the bit used in the conventional semi-shield method is simply formed into a conical shape and excavated by the rotational force and the forward force, it is difficult to keep the buried hole circular, and the bit is fast due to the friction between the bit and the ground. In addition, there is a drawback of wear, there is a disadvantage that the efficiency of drilling is poor.

The present invention is to solve the above-mentioned conventional problems, to provide a bit for the conduit propulsion device to be able to excavate the buried hole to fit the appearance of the buried pipe, and to minimize the wear caused by friction with the ground. There is a purpose.

Conduit propulsion device bit according to the present invention for achieving the above object, the bit body, the center bit is formed in the center of the front surface of the bit body, the first and second disc cut formed concentrically with the center bit, the bit body It is characterized by consisting of a plurality of through bits mounted on the circumferential surface of the second disc cut at the same height to maintain the appearance of the buried hole.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms or words used in the present specification and claims are defined in the technical spirit of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to best describe his or her own design. It must be interpreted to mean meanings and concepts.

As shown in FIG. 1, the bit 100 for conduit propulsion device according to the present invention is a cylindrical bit rotatably coupled to the buried pipe 300 (shown in FIG. 4C) propulsion device 200 by propulsion. The body 10, the center bit 20 formed in the front center of the bit body 10, the first disc cut 30 formed symmetrically on both sides of the center bit 20, and the bit body 10 A pair of second disc cuts 40 and a bit body 10 mounted on both sides of the circumference (a direction orthogonal to the first disc cut 30) so that the outer circumference protrudes from the circumference of the bit body 10. The outer circumferential surface is a plurality of through bits 50 mounted on the circumferential surface of the circumferential surface so as to have the same height as the outer circumferential edge of the second disc cut 40. That is, the center bit 20, the first disc cut 30, the second disc cut 40, and the through bit 50 are excavated while drawing concentric circles to excavate the buried holes 1.

The bit body 10 is made of steel, etc., of strength that will not be damaged by friction with the ground during excavation, and has a cylindrical shape that is open toward the rear (opposite direction of excavation).

The reinforcing material 11 for strength reinforcement of the bit body 10 is welded to the outer circumferential surface of the bit body 10.

The center bit 20 is to excavate the center of the buried hole (1), the cylindrical portion 21 protruding from the front of the bit body 10, along the direction across the circumference in the center of the front of the cylindrical portion 21 The first bit part 22 protruding toward the front and the second bit part 23 of the hemispherical shape protruded on both upper and lower sides of the first bit part 22, respectively.

The first disc cut 30 is formed of a cylinder of rhombus cross section and is provided with a plurality of annular cutting edges 31 (shown as four in the figure) along the longitudinal direction, so that the plurality of cutting edges 31 are bit bodies. It is provided so that it may protrude on the same line from the front surface of 10, and excavate the periphery of the center bit 20. As shown in FIG.

The second disc cut 40 has the same shape as the first disc cut 30 and is installed to protrude to the circumference of the bit body 10 to excavate the outermost angle of the buried hole 1 (shown in FIG. 2). do.

The through bits 50 are provided on the outer circumferential surface of the bit body 10 at regular intervals (between the second disc cuts 40), and the buried holes 1 are moved forward while rotating by the rotation of the bit body 10. ) Form the outermost part of) in a straight line.

The through bit 50 is preferably flush with the second disc cut 40 at the same height as the second disc cut 40 so as not to protrude more than the periphery of the second disc cut 40 on the circumferential surface of the bit body 10. It protrudes forward in the same line with the outer peripheral surface of the bit body 10 toward the front of 10). That is, the reinforcing material 11 of the bit body 10 is to maintain a height lower than these between the second disc cut 40 and the through bit 50.

When the through bit 50 is excavated in the ground, wear occurs over time according to the fracture, so that the through bit 50 is replaceably coupled to the bit body 10. The structure of the through bit 50 is a plate-like fixing part 51 in which a plurality of fastening holes are formed. It is composed of a rectangular tip portion 52 protruding at the same height as the second disc cut 40 on one side of the government 51.

Through bit 50 is made of a high-strength solid stone or the like.

The bit 100 for the conduit propulsion device of such a structure is rotatably mounted to the leading pipe 210 of the known propulsion device 200 to receive the rotational force and the forward force to rotate while moving forward.

Since the propulsion device for driving the bit for the conduit propulsion device according to the present invention is known, a detailed description thereof will be omitted.

As shown in Figure 4a to 4d, the buried pipe propulsion method using a bit for a conduit propulsion device according to the present invention configured as described above is as follows.

(S10) Propulsion system and lead pipe set.

The propulsion space is secured at the start position and the end position for the embedding of the buried pipe 300, and the combination of the leading pipe 210 and the propulsion device 200 to which the inventive bit 100 is coupled is set. 4a).

(S20) bit operation.

The buried hole 1 is formed in the ground by transmitting the rotational force to the bit 100 and driving the ground pipe 210 through the propulsion jack 220 to drill the ground (see FIG. 4B).

(S30) buried pipe connection.

When the lead pipe 210 is excavated in the ground, the propulsion jack 220 is retracted to connect the buried pipe 300 (a state in which the screw 230 is built) to the lead pipe 210 (see FIG. 4C).

(S40) buried buried.

Leading pipe 210 in a state in which buried pipe 300 is buried in the ground by pushing the leading pipe 210 to the end position of the buried pipe secured in the step (S10) while repeating the above-described (S20)-(S30) processes. (See FIG. 4D).

On the other hand, when the operation of the bit 100 according to the present invention in detail, when the driving device 200 is driven, the center bit 20, the first disk cut 30, the second disk together with the bit body 10 The cut 40 and the through bit 50 are excavated (rotated and advanced) to embed the buried pipe 300 while forming the buried hole 1 in the ground.

The center bit 20 drills the center of the buried hole for embedding the buried pipe 300 by the rotational force and the forward force, and the first disc cut 30 breaks the gravel of the ground by the rotational force and the forward force. To excavate.

The second disc cut 40 forms a hole in the ground by crushing the gravel and the stone while the cutting blades 41 at the circumference thereof suppress and drive (rolling) the ground gravel and the stone (aldol).

In addition, the through bit 50 rotates and advances while crushing gravel and the like within the rotation radius while moving forward to maintain the straightness of the buried hole and the buried hole.

As such, while the buried holes are formed in the ground by the center bit 20, the first and second disc cuts 30 and 40, and the through bit 50, the crushed gravel and earth and sand are removed through the screw 230 to the rear. While pushing the buried pipe 300 forward.

At this time, the disc cut 20 and the through bit 30 protrude at the same height from the outer circumferential surface of the bit body 10 so that gravel and the like in the ground do not directly rub against the outer circumferential surface of the bit body 10. Wear is reduced.

As described above, the bit for the conduit propulsion device according to the present invention, the center bit, the first disk cut, the second disk cut and the through bit is arranged while drawing concentric circles while moving from the center of the bit body to the circumference, the rotational force and the forward By burying the buried holes by force, the buried holes can be formed in accordance with the appearance of the buried pipe.

The second disc cut and the through bit mounted on the circumference of the bit body are formed at the same height from the circumferential surface of the bit body so that no direct friction between the bit body and the ground occurs so that a reinforcement material for reinforcing the strength of the bit body is provided. Since it is not damaged, the durability of the bit can be improved.

The invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, but the invention is not limited to the configuration and operation as shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes, modifications, and equivalents should be considered to be within the scope of the present invention.

Claims (3)

A cylindrical bit body (10) rotatably mounted and protruding at the distal end of the propulsion device and open toward the rear; A center bit 20 protruding from the front center of the bit body; A pair of first disc cuts 30 rotatably mounted on both sides of the center bit; A second disc cut (40) rotatably mounted while its outer periphery protrudes from the front and circumference of the bit body in a direction orthogonal to the first disc cut of the bit body; It includes a plurality of through bits (50) that are replaceably mounted to the outer peripheral end of the bit body, And the through bit protrudes from the outer circumferential surface of the bit body at the same height as the disk cut. According to claim 1, The through bit is made of a flat plate and provided with one or more fastening holes are fastened to the bit body through the fasteners 51 and a portion of the fixing portion the same height as the disk cut Bit for conduit propulsion device, characterized in that consisting of a rectangular tip portion 52 is coupled to protrude to. The center bit of claim 1 or 2, wherein the center bit has a cylindrical portion (21) protruding forward on the front surface of the bit body, and protrudes forward along a direction transverse to the circumference at the center of the front surface of the cylindrical portion. Bit for the conduit propulsion device, characterized in that consisting of a first bit portion (22) and the second bit portion (23) of the hemispherical protruding respectively on the upper and lower sides of the first bit portion.

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