KR101762062B1

KR101762062B1 - Excavationg header for small steel pipe jacking and consturction method thereof

Info

Publication number: KR101762062B1
Application number: KR1020160008168A
Authority: KR
Inventors: 우근우
Original assignee: 우근우
Priority date: 2016-01-22
Filing date: 2016-01-22
Publication date: 2017-08-04

Abstract

The present invention relates to a small-sized steel pipe propulsion system in which a clamping unit is fixed to the inside of a propulsion casing, and a hammer is rotated to strike a ground or a rock layer and a first, second, and third hammers are independently controlled, And a method of constructing the same.

Description

TECHNICAL FIELD [0001] The present invention relates to an excavation header for propelling a small steel pipe,

The present invention relates to an excavation header and a method of constructing the excavation header, and more particularly, to an excavation header for excavating a small steel pipe by fixing an excavator inside a propulsion casing horizontal to the ground and hitting a ground or a rock layer with a hammer, And a construction method.

Generally, in order to prevent construction of concrete structures such as bridges and buildings, and to prevent the buildup of retaining walls due to subsidence during the civil engineering works, auger drills and perforated hammers are used until the rocks where subsidence does not occur After digging the ground with the installed drilling rig, insert a cylindrical casing.

In order to insert the casing, the diameter of the perforation hole must be at least larger than the outer diameter of the casing, and the impact hammer and the magnifying beam for underground excavation are inserted into the casing, and the excavated hole is first inserted into the excavated hole, And casing insertion are simultaneously performed.

The conventional impact hammer receives the vertical impact force from the pneumatic / hydraulic means connected to the upper end and moves up and down in the vertical direction to crush and drill the bottom of the ground. The spotlight is integrally installed at the lower end of the impact hammer and connected to the upper end of the impact hammer And receives the rotational force from the rotating means to expand the hole diameter of the perforated ground.

Here, the magnifying beam is extended in the outer diameter direction of the casing from the impact hammer at the time of enlargement, rotates at a larger diameter than the outer diameter of the casing, and a large diameter bit is inserted into the casing at the time of inserting and demounting the casing, It will be.

At this time, when the casing is inserted or a padding jacket is provided, the outer diameter of the diameter bit inserted inside the casing (outer diameter of the diameter bits before being spread in the radial direction) is usually about 10 mm smaller than the inner diameter of the casing.

However, when the thickness of the casing or the jacket exceeds the allowable permissible range of the existing diameter bit, for example, the thickness of the casing is as large as about 50 mm, and when the outer diameter of the casing is larger than the maximum expansion range of the diameter bits during excavation, Is insufficient, it is difficult to insert the casing up to the gravel layer, sandstone, weathered rock and soft rock, which is time consuming and expensive.

In addition, in the prior art, a structure in which a diameter bit is detachable is adopted. In order to replace the hammer even if it is replaced in the field, the hammer is taken out of the casing and replaced with a large diameter bit, There is a problem that the workability is lowered and the working time is increased because it has to be excavated by injection.

Korean Patent Application No. 10-2013-0140979 filed on Jun. 15, 2012, entitled "Striking hammer device for underground excavation equipped with detachable drill bits" Korean Patent Application No. 10-2016-0004494 filed on July 2, 2014, entitled "Donut Hammer Device and Excavation Method Using the Same"

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 an excavation header for propelling a small steel pipe that fixes a clamping part to the inside of a propulsion casing and then hits a ground or a rock layer while rotating the hammer part, will be.

It is another object of the present invention to provide a hammering apparatus and a hammering method in which a first hammer and a second hammer are linearly reciprocating and a third hammer is linearly reciprocated in a tilted direction in one direction, And a method of constructing the same.

According to another aspect of the present invention, there is provided an excavation header for propelling a small steel pipe which doubles impact efficiency through a control unit capable of independently controlling first, second, and third hammers, and a method of constructing the same.

According to an aspect of the present invention, there is provided a drilling head for drilling a small steel pipe, comprising: a clamping part fixed in the inside of a propulsion casing in which a case is inserted, the hollow tube being horizontally penetrated into a ground; A rotation driving unit connected to the clamping unit; An extension excavator connected to the rotary drive unit and rotatable by the rotation of the rotary drive unit; And a hammer part protruding from the extended excavation part and striking a rock layer adjacent to the ground or the ground while linearly reciprocating, wherein the hammer part is fixed to the ground by the operation of the rotation driving part, So that the ground or the rock layer is hit uniformly.

Here, the clamping unit may include a casing inserted into the casing; A guide structure which is a hollow rectangular parallelepiped fixed on a central axis line of the case; A plurality of pairs of ribs radially disposed from the central axis of the case to connect the case and the guide structure; A clamping cylinder disposed between the plurality of pairs of ribs and linearly reciprocating; And a clamping plate of an elastic material positioned at an upper portion of the clamping cylinder, wherein the clamping cylinder is fixed to the clamping cylinder so that the clamping plate is in contact with the inner circumferential surface of the propelling casing while the clamping unit is inserted into the propelling casing And linearly moves radially about the central axis of the case.

Here, the clamping unit may include: a pair of propelling cylinders mounted on one surface of the case so as to be in parallel with the propelling casing; And a main discharge passage disposed between the pair of propelling cylinders across a center portion of the case.

Here, the rotation driving unit may include a housing into which one side of the main discharge passage is inserted, the housing into which the pair of propelling cylinders are mounted and is inserted into the propulsion casing; A bending discharge passage bent so as to be adjacent to the inner peripheral surface of the housing and communicating with the main discharge passage; A rotation speed reducer disposed on a central axis line of the housing; And a rotary drive shaft disposed on a central axis line of the housing to be connected to the rotary speed reducer, wherein an inlet hole communicating with the bent discharge passage is formed on one side of the housing adjacent to the rotary drive shaft.

Here, the extended excavation unit includes: a hollow rotary housing inserted into the propulsion casing and integrally rotatable with the rotary drive shaft; A driving plate including a first driving plate, a second driving plate, and a third driving plate that are formed in order from an inner side of the rotating housing perpendicular to the rotating housing; A seating plate fixedly disposed at a predetermined distance from the third driving plate; A vertical cylinder connecting the upper surface of the rotary housing and the third drive plate; An air supply passage passing through the upper surface of the rotary housing and disposed between the upper and lower cylinders and the rotary housing; And a drive plate guide inserted in the third drive plate and guiding a linear reciprocating motion of the third drive plate in parallel with the air supply passage, wherein an outer circumferential surface of the rotary housing is radially arranged from a central axis of the rotary housing And a plurality of discharge grooves formed in the longitudinal direction are formed.

Here, the hammer portion may include: a first hammer of 4 inch size arranged radially from the central axis of the rotary housing and fixed to the first drive plate; An 8-inch-sized second hammer disposed on the central axis line of the rotary housing and fixed to the second drive plate; And a third hammer connected to the third drive plate and having a size of 4 inches and arranged to be inclined in a rotating direction of the rotary housing, wherein the first to third hammers are in the form of a round bar, Is formed.

Here, the distal ends of the first to third hammers are exposed to the outside through the lower surface of the rotary housing. When the lower surface of the rotary housing is viewed, the first hammer is positioned at the center of the rotary housing, 2 hammer is disposed radially from the center of the rotary housing surrounding the first hammer and the third hammer is disposed radially from the center of the rotary housing surrounding the second hammer, And is inclined at 12 to 17 degrees.

(A) a clamping part, a rotation driving part connected to one side of the clamping part, and a driving part connected to one side of the rotation driving part, Inserting an excavation header into the propulsion casing and fixing the excavation header to the propulsion casing, the excavation header including an excavation header including an excavation section rotatable by the excavation head and a hammer section partially exposed from the excavation header for the small steel pipe to the outside of the rotary drive section; (b) discharging the rock or the fragmented rock to the outside while striking the ground or rock layer in front of the hammer portion with the hammer portion that is linearly reciprocating while rotating by rotation of the extended excavation portion; (c) separating the rotary drive unit, the extended excavation unit, and the hammer unit from the ground or rock layer in front of the hammer unit by 1 m; (d) returning to step (b) until the hammer is exposed to the outside of the ground; And (e) withdrawing the excavation header from the propulsion casing after the operation of the rotary drive unit and the hammer unit is terminated.

The step (a) includes the steps of: (a1) inserting the excavation header into the propulsion casing; And (a2) a plurality of clamping cylinders radially disposed from the central axis of the propelling casing, the pushing plates mounted on the plurality of clamping cylinders are brought into contact with the inner circumferential surface of the propelling casing, so that the clamping portions are disposed on the inner circumferential surface of the propelling casing And fixing the second substrate.

The step (b) includes the steps of: (b1) rotating the extended excavation unit by applying a rotational force to a rotary drive shaft disposed on a central axis line of the housing of the rotary drive unit; (b2) hitting the ground or rock layer by linearly reciprocating the hammer rotating together with the extended excavation unit; And (b3) the gravel-like or fragmented rock which flows into a plurality of discharge grooves formed in the longitudinal direction on the outer circumferential surface of the rotary housing of the excavation mounting part passes through an inlet hole communicating with the folding discharge passage formed on one surface of the housing, And discharging the water through a bending discharge passage communicating with the inflow hole and a hose connected to the outside of the ground via a main discharge passage communicating with the bending discharge passage.

According to the present invention, after the clamping portion is fixed to the inside of the propulsion casing, the hammering portion is rotated to strike the ground or the rock layer, so that the striking force is added together with the rotational force to improve the striking efficiency.

According to the present invention, the first hammer and the second hammer are reciprocated in a straight line, and the third hammer is linearly reciprocated in a tilted direction in one direction, so that the striking radius is enlarged, so that more stable excavation can be performed.

According to the present invention, the striking efficiency can be doubled through a control unit that can independently control the first, second, and third hammers.

1 is a view showing an excavation header for propelling a small steel pipe according to an embodiment of the present invention.
2 is a view along the line A-A 'in Fig.
3 is a side view of Fig. 1. Fig.
4a and 4b are views showing an extended excavation unit according to an embodiment of the present invention.
5A and 5B are views of the hammer portion in FIG.
6 is a view illustrating a state in which a propulsion casing having a drilling header inserted therein is placed on a ground in a method of constructing an excavation header for propelling a small steel pipe according to an embodiment of the present invention.
Figures 7a, 7b and 7c are diagrams showing the clamping part being fixed in the interior of the propulsion casing by the clamping cylinder in figure 7;
FIGS. 8A, 8B and 8C are views showing positions of a hammer portion where a drilling header is spaced apart from a ground or rock layer in a construction method of a drilling header for propelling a small steel pipe according to an embodiment of the present invention.
FIG. 9 is a view showing the discharge of a fragmented rock or gravel into a hose by a construction method of an excavation header for propelling a small steel pipe according to an embodiment of the present invention.
10 is a view showing completion of excavation by a construction method of an excavation header for propelling a small steel pipe according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Hereinafter, an excavation header for propelling a small steel pipe according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5, and a construction method of a excavation header for propelling a small steel pipe will be described with reference to FIGS.

[Excavation Header for Small Steel Pipe Propulsion (100)]

FIG. 1 is a view showing an excavation header for propelling a small steel pipe according to an embodiment of the present invention, FIG. 2 is a view taken along the line A-A 'in FIG. 1, FIG. 3 is a side view of FIG. 4a and 4b are views showing an extended excavation unit according to an embodiment of the present invention, and FIGS. 5a and 5b are views showing the hammer unit in FIG.

1 and 2, the excavation header 100 for propelling a small steel pipe according to the embodiment of the present invention includes a clamping part 110, a rotation driving part 120, an extended excavating part 130, and a hammering part 140 ).

The clamping part 110 is fixed inside the propelling casing 105 which is a hollow tube horizontally penetrated to the ground. The clamping part 110 includes a case 111, a guide structure 112, a rib 113, A pressure plate 114, a pressure plate 115, a propelling cylinder 116, and a main discharge passage 117.

The case 111 is composed of a pair of discs as shown in FIG. 2. The center of the case 111 is formed in a circular shape so that a main discharge passage 117, which will be described later, is inserted. It is preferable that the diameter of the case 111 is smaller than the diameter of the propelling casing 105 so that the case 111 can be inserted into the propelling casing 105.

The guide structure 112 has a hollow rectangular parallelepiped shape fixed on the central axis line of the case 111. More specifically, as shown in FIG. 2, the guide structure 112 is fixed to a pair of disc inner surfaces of the case 111, and a main discharge passage is inserted into the center of the guide structure 112.

The ribs 113 are radially arranged from the center axis of the case 111 so as to connect the case 111 and the guide structure 112, and are formed of a plurality of pairs. As an example, the clamping cylinder 114 provided on the guide structure 112 can be firmly fixed by being disposed between a pair of ribs 113 provided on the upper portion of the guide structure 112. The clamping cylinder 114 provided at the lower portion of the guide structure 112 is also disposed between the pair of ribs 113 provided at the lower portion of the guide structure 112 to be firmly fixed.

That is, the ribs 113 are formed by pairs of a pair of upper, lower, and opposite side portions of the guide structure 112, respectively.

The clamping cylinder 114 is disposed between the plurality of pairs of ribs 113 and is reciprocated linearly. More specifically, the clamping cylinder 114 may be provided with a cylinder rod capable of reciprocating linearly, and a pressure plate 115 is mounted on one end of the cylinder rod. According to this structure, the clamping cylinder 114 is fixed to the case 111 (or 111) so that the clamping plate 110 can be fixed while being in contact with the inner circumferential surface of the propelling casing 105 while the clamping plate 110 is inserted into the pushing casing 105 And the associated diagram is shown in Figure 7b.

The pressing plate 115 is made of an elastic material located at the upper portion of the clamping cylinder 114. The elastic material at this time may be a generally used rubber, but is not limited thereto. When the power is supplied to the clamping cylinder 114, the pushing plate 115 is tightly fixed to the inner circumferential surface of the propelling casing 105 as the cylinder rod linearly moves.

The propelling cylinder 116 is mounted on one side of the case 111 so as to be in parallel with the propelling casing 105, and is constituted as a pair as shown in Figs. The propelling cylinder 116 moves the rotary drive unit 120 forward so that the hammer 140 can advance while striking the ground G or the rock layer or after the operation of the hammer 140 stops temporarily, The rotary drive unit 120 can be moved backward so that the hammer unit 140 can be separated from the ground G or the rock layer located in front of the hammers 140.

The main discharge passage 117 has a hollow tube shape disposed between the pair of propelling cylinders 116 across the center of the case 111. More specifically, the main discharge passage 117 is inserted past the center of the guide structure 112 located at the center of the case 111, and one side of the main discharge passage 117 is inserted into the housing 121 Is inserted.

The other end of the main discharge passage 117 is partially exposed to the left side of the case 111 as shown in FIG. The other end of the main discharge passage 117 communicates with the hose 106 extending to the outside of the ground G to serve as a passage for discharging the fragmented rock or the agglomerated soil by the operation of the hammer 140.

The rotation driving unit 120 is connected to the clamping unit and the rotation driving unit 120 includes a housing 121, a bending discharge passage 122, a rotary speed reducer 123, a rotary driving shaft 124, .

The housing 121 is inserted into one side of the main discharge passage 117 and the propulsion casing 105 with a pair of propelling cylinders 116 mounted thereon. More specifically, the housing 121 has an empty cylindrical shape.

An inlet hole (not shown) communicating with the bending discharge passage 122 is formed on one surface of the housing 121 adjacent to the rotational driving shaft 124, which will be described later, that is, a surface of the housing 121 adjacent to the rotating housing 131 shown in FIG. The hammer 140 is hammered by the inlet hole 121a and the fragmented rock or the gravel is introduced.

The bending discharge passage 122 is bent so as to be adjacent to the inner peripheral surface of the housing 121 and communicates with the main discharge passage. 2, the bending discharge passage 122 is a hollow tube having a shape similar to an elbow, and one side of the bending discharge passage 122 communicates with the main discharge passage 117, and the bending discharge passage 122 communicate with the inlet hole 121a. The bending discharge passage 122 serves as a passage through which the fragmented rock or the gravel flowing into the inlet hole 121a can move to the main discharge passage 117. [

The rotation speed reducer 123 is disposed on the central axis line of the housing 121, and a motor (not shown) is attached to one side of the rotation speed reducer 123 at this time. Accordingly, the rotation speed reducer 123 reduces the rotation speed of the extended drilling unit 130 by reducing the number of revolutions of the motor.

The rotary drive shaft 124 is disposed on the center axis line of the housing 121 so as to be connected to the rotary speed reducer 123. That is, the inside of the housing 121 is arranged in this order from the left side of the housing 121, the motor, the rotation speed reducer 123, and the rotation driving shaft 124, as shown in FIG.

The rotation drive shaft 124 is fixed to the rotation housing 131 to be integrally rotated. When the motor is operated, the rotation speed reducer 123 corrects the rotation speed of the motor. And the rotation housing 131 rotates accordingly.

The hydraulic pressure swivel 125 is disposed adjacent to the rotary drive shaft 124. The hydraulic pressure swivel 125 is applied to the upper and lower cylinders 134 to be described later and the flexibility of the operation of the upper and lower cylinders 134 . That is, the hydraulic pressure swivel 125 minimizes the stress that may be applied to the upper and lower cylinders 134 and the air supply passage 135, which are provided with the hydraulic pressure, thereby extending the service life of the product.

The extended excavating part 130 is rotatable by the operation of the rotary driving part 120 while being connected to the rotary driving part 120. The extended excavating part 130 includes a rotary housing 131, a driving plate 132, The upper and lower cylinders 133, 134, the air supply passage 135, the guide ball bush 136, and the drive plate guide 137.

The rotary housing 131 is hollow inside the propulsion casing 105 and rotatable integrally with the rotary drive shaft 124. 1, a plurality of discharge grooves 131a are formed radially from the central axis of the rotary housing 131, and the discharge grooves 131a are formed in the longitudinal direction of the rotary housing 131. In the present invention, Although three discharge groove portions 131a are shown, this can be suitably changed as needed.

The drive plate 132 includes a first drive plate 131a, a second drive plate 131b, and a third drive plate 131c which are perpendicular to the rotation housing 131 and are formed in order from one side of the interior of the rotation housing 131, .

The first drive plate 132a has a disk shape as shown in FIG. 2 and is disposed at one side of the interior of the rotation housing 131 adjacent to the housing 121. [ The first drive plate 132a may be disposed perpendicular to the center axis of the rotary housing 131 so that the inner space of the rotary housing 131 can be partitioned. A first hydraulic cylinder (not shown) is mounted on the upper surface of the first drive plate 132a, and the first drive plate 132a moves up and down according to the operation of the first hydraulic cylinder. The first hammers 141 are mounted on the lower surface of the first driving plate 132a so that the first driving plate 132a moves up and down so that the first hammers 141 are moved to the outside of the rotating housing 131 .

The second drive plate 132b has a disk shape as shown in FIG. 2 and is disposed on the right side of the first drive plate 132a in the inside of the rotation housing 131. [ The second drive plate 132b may be disposed perpendicular to the center axis of the rotation housing 131 so that the inner space of the rotation housing 131 may be partitioned as the first drive plate 132a. A second hydraulic cylinder (not shown) is mounted on the upper surface of the second drive plate 132b, and the second drive plate 132b moves up and down according to the operation of the second hydraulic cylinder. The second driving plate 132b is vertically moved by mounting the second hammer 142 on the lower surface of the second driving plate 132b so that the second hammer 142 is moved to the outside of the rotating housing 131 .

The third drive plate 132c has a disk shape as shown in FIG. 2 and is disposed on the right side of the second drive plate 132b in the inside of the rotation housing 131. [ The third drive plate 132c is disposed perpendicularly to the center axis direction of the rotation housing 131 so that the inner space of the rotation housing 131 can be partitioned like the first and second drive plates 132a and 132b . 4A and 4B, the head rotating part of the third hammer 143 is mounted on the lower part of the third driving plate 132c and the upper and lower cylinders 134 are mounted on the upper part of the third driving plate 132c Respectively.

At this time, when the upper and lower cylinders 134 are operated up and down, the third hammers 143 are projected to the outside of the rotary housing 131 in an oblique direction than the original position.

The seating plate 133 is fixedly disposed at a predetermined distance from the third driving plate 132c. More specifically, the first, second and third driving plates 132a, 132b and 132c have a disk shape and are disposed on the right side of the third driving plate 132c as shown in Fig. The seat plate 133 is disposed perpendicular to the central axis direction of the rotary housing 131 such that the inner space of the rotary housing 131 can be partitioned like the first, second, and third drive plates 132a, 132b, and 132c And is fixed.

In particular, since the first hammers 141, the second hammers 142, and the third hammers 143 are positioned so as to pass through the seating plate 133, the seating plate 133 is divided into the first hammers 141, 2 hammer 142 and the third hammer 143 can be guided.

Unlike the first, second and third driving plates 132a, 132b and 132c which can be moved up and down by the cylinder, the seating plate 133 is fixed to the interior of the rotating housing 131, The second hammers 142 and the third hammers 143 can be guided so as to be linearly reciprocated without moving left and right so that the energy loss can be reduced and the impact on the ground G or the rock layer Energy can be doubled.

The upper and lower cylinders 134 connect the upper surface of the rotary housing 131 to the third drive plate 132c. When the upper and lower cylinders 134 in the state shown in FIG. 4A operate, the third drive plate 132c, The third hammer 143 is further protruded to the lower portion of the rotation housing 131 than the original position.

The air supply passage 135 is disposed between the upper and lower cylinders 134 and the rotary housing 131 while passing through the upper surface of the rotary housing 131 as shown in FIG. Can be injected. To this end, the housing 121 may further include a hydraulic pump (not shown) for supplying air to the air supply passage 135.

This air supply passage 135 communicates with the interior of the third hammers 143 while injecting or sucking in air so that the third hammers 143 move downwardly obliquely in the diagonal direction to form the ground G or The process of striking the rock layer or returning to the original position is repeated.

The guide ball bush 136 is formed on the lower surface of the rotary housing 131 and is disposed so as to surround the lower portion of the third hammer 143 as shown in Figs. 4A and 4B. Further, both side portions of the guide ball bush 136 are rounded as shown in the region S2. Accordingly, the guide ball bush 136 is rotated from the rotation center so that the third hammers 143 can smoothly move when the third hammers 143 linearly reciprocate in an oblique direction.

The driving plate guide 137 is inserted into the third driving plate 132c in parallel with the air supply passage 135 and serves to guide the linear reciprocating motion of the third driving plate 132c.

The hammer 140 partially protrudes from the extended excavation part 130 and strikes a rock layer adjacent to the ground G or the ground G while linearly reciprocating the hammer part 140. The hammer part 140 includes a first hammer 141 ), A second hammer 142, and a third hammer 143.

Particularly, the hammering unit 140 uniformly hits the ground G or the rock layer by linearly reciprocating while rotating together with the extended excavating unit 130 by rotation of the rotation driving unit 120.

The first hammer 141 has a size of 4 inches radially arranged from the center axis of the rotary housing 131 and fixed to the first drive plate 132a as shown in Fig. Specifically, the first hammer 141 is formed in an annular rod shape, and a plurality of bits? 138 may be formed at one end thereof.

The first hammers 141 linearly reciprocate together with the first drive plate 132a as the first drive plate 132a linearly reciprocates within the rotary housing 131 by the first hydraulic cylinder, G) and the rock layer.

The second hammer 142 is disposed on the central axis line of the rotary housing 131 and has an 8-inch size fixed to the second drive plate 132b. As shown in FIG. 2, the first hammer 141 and the second hammer 141, Is larger than the third hammer 143.

More specifically, the second hammer 142 is also formed in an annular rod shape, and a plurality of bits? 290 can be formed at one end thereof. As the linear reciprocating motion is performed by the pneumatic / hydraulic cylinder in the rotary housing 131, the ground G and the rock layer are struck with the second driving plate 132b in linear reciprocating motion.

The third hammer 143 has a size of 4 inches, which is connected to the third driving plate 132c and is inclined in the rotating direction of the rotating housing 131. [ 4A and 4B, the third hammer 143 is disposed to be inclined in one direction within the rotation housing 131, so that the first hammer 143 disposed in parallel with the center axis of the rotation housing 131 141 and the second hammer 142 are different from each other in arrangement.

The first to third hammers 141, 142 and 143 are in the shape of a round bar, and a plurality of bits are formed at the ends thereof, so that the ground G and the rock layer can be effectively hit.

At this time, the distal ends of the first to third hammers 141, 142 and 143 are exposed to the outside through the lower surface of the rotary housing 131, and when the lower surface of the rotary housing 131 is viewed, And the second hammers 142 are disposed radially from the center of the rotary housing 131 while surrounding the first hammers 141. The second hammers 142 are disposed at the center of the rotary housing 131,

4A and 4B, the third hammers 143 are disposed radially from the center of the rotary housing 131 while surrounding the second hammers 142, and extend from the center axis of the rotary housing 131 12 DEG to 17 DEG.

4A, when the third hammer 143 is in the home position, the third hammer 143 is inclined at an angle of 12 degrees with respect to the center axis of the rotation housing 131, and the third hammer 143 is inclined downward When it is moved, it is inclined at 17 degrees from the center axis of the rotation housing 131 as shown in FIG. 4B.

Further, the excavation header 100 for propelling a small steel pipe according to an embodiment of the present invention may further include a controller (not shown) for independently controlling operations of the first and second hydraulic cylinders and the upper and lower cylinders 134 . Specifically, the control unit may control the first and second pneumatic-pressure cylinders and the upper and lower cylinders 134 to perform a linear reciprocating motion simultaneously, but the first and second pneumatic-pressure cylinders and the upper and lower cylinders 134 may be independently controlled to operate It is possible.

For example, referring to FIG. 5A, the second pneumo-hydraulic cylinder is operated so that the ground G or the rock layer is hit by the second hammer 142 having the largest bit size, So that the ground G or the rock layer can be hit by the first hammer 141. [ At this time, the area struck by the first and second hammers 141 and 142 may be about 860 mm. Next, referring to FIG. 5B, the upper and lower cylinders are controlled to operate, and the ground hammer 143 is used to strike the ground G and the rock layer. Thus, effective hitting is enabled. At this time, the area struck by the third hammers 143 may be about 937 mm.

[Construction method of excavation header for small steel pipe propulsion]

6 is a view showing a state in which a propulsion casing having a drilling header inserted therein is placed on a ground in a method of constructing an excavation header for propelling a small steel pipe according to an embodiment of the present invention. FIGS. 7A, 7B and 7C are cross- 8A, 8B and 8C are views showing the construction of the hammer head in which the excavation header is spaced apart from the ground or rock layer in the construction method of the excavation header for propelling a small steel pipe according to the embodiment of the present invention, FIG. 9 is a view showing the discharge of a fragmented rock or gravel to a hose by a construction method of an excavation header for propelling a small steel pipe according to an embodiment of the present invention, and FIG. 10 is a view FIG. 5 is a view showing the completion of excavation by a construction method of a digging header for propelling a small steel pipe according to FIG.

(A) a clamping part 110, a rotation driving part 120 connected to one side of the clamping part 110, a side of the rotation driving part 120, The excavation header 130 includes an excavation header 130 including a rotatable drive unit 120 connected to the excavator 130 and a hammering unit 140 partially exposed from the excavation unit 120, 100 is inserted into the propulsion casing 105 and fixed to the propulsion casing 105. (b) The hammer section 140 is rotated by the hammer section 140, which is linearly reciprocating while rotating by the rotation of the extension drill section 130 (C) moving the rotary drive part 120 from the ground G or rock layer in front of the hammer part 140 to the ground G or the rock layer in front of the hammer part 140, (D) separating the drilling unit 130 and the hammering unit 140 from each other by 1 mm, (B) returning to the step (b) until the drilling header 100 is exposed to the excavation head 100, and (e) after the operation of the rotary drive part 120 and the hammer part 140 is completed, .

As shown in FIG. 6, the propulsion casing 105 in the step (a) has a shape of a hollow tube into which the excavation header 100 according to the embodiment of the present invention can be inserted, Pushes the propulsion casing 105 horizontally into the ground G in the direction of excavation. At this time, the propelling casing 105 can be moved to the right by a separate propelling device (not shown) mounted on the left side of the propelling casing 105 in Fig.

More specifically, the step (a) includes the steps of (a1) inserting the excavation header 100 into the propulsion casing 105, and (a2) inserting the excavation header 100 as shown in FIGS. 7 The operation of the plurality of clamping cylinders 114 arranged radially from the central axis of the propelling casing 105 brings the pressure plate 115 mounted on the plurality of clamping cylinders 114 into contact with the inner circumferential surface of the propelling casing 105, And fixing the portion 110 to the inner circumferential surface of the propelling casing 105.

In particular, when the clamping cylinder 114 is operated in the excavation header 100 shown in FIG. 7A, the cylinder rods mounted on the respective clamping cylinders 114, as shown in FIG. 7B, The push plate 115 attached to the cylinder rod comes into contact with the inner circumferential surface of the propelling casing 105. As a result, At this time, the pressure plate 115 is made of an elastic material, so that the adhesion force and the fixing force between the clamping unit 110 and the propelling casing 105 are improved.

Next, referring to FIGS. 2, 3 and 7A, the step (b) includes the steps of: (b1) applying a rotational force to the rotational driving shaft 124 disposed on the central axis line of the housing 121 of the rotational driving unit 120 (B2) hitting the ground G or rock layer by a linear reciprocating motion of the hammer part 140 rotating together with the extended excavating part 130, and (b3) The gravel or the fragmented rock introduced into the plurality of discharge grooves 131a formed in the longitudinal direction on the outer circumferential surface of the rotary housing 131 of the excavating portion 130 is communicated with the bending discharge passage 122 on one surface of the housing 121 Passes through the bending discharge passage 122 communicating with the inlet hole 121a after passing through the inlet hole 121a and is discharged to the outside of the ground G through the main discharge passage 117 communicating with the bending discharge passage 122 And discharging it to the connected hose (106).

8A to 8C, the step (c) includes the steps of: (c1) connecting a case 111 accommodating a plurality of clamping cylinders 114 and a housing 121 surrounding the rotary driving shaft 124 (C2) moving the hammer part 140 by 1 m from the ground G or the rock layer in front of the hammer part 140 by the operation of the propelling cylinder 116 And (c3) operating the propelling cylinder 116 in the other direction to position the hammer 140 as a ground G or a rock layer in front of the hammer 140.

Next, returning to step (b) until the hammer 140 is exposed to the outside of the ground G as in step (d), and repeating steps (b) and (c) . 6A and 7A, the excavation header 100 is fixed to the inside of the propulsion casing 105, and then the ground G and the rock layer are hit by the hammer 140, and as shown in FIG. 9A, Backward 1m to the left as it is, then advance 1m to the right again. When this process is repeatedly performed, the state shown in FIG. 9 is passed and the drilling is completed by passing through the right-hand straight hole as shown in FIG.

At this time, (e) the operation of the rotary drive part 120 and the hammer part 140 is terminated, and then the excavation head 100 is taken out from the propulsion casing 105, and the excavation work is completed.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Small Steel Pipe Excavation Headers
105: Propelling casing
106: Hose
110: clamping part
111: Case
112: guide structure
113: rib
114: Clamping cylinder
115: Presser plate
116: Propelling cylinder
117: Main discharge passage
120:
121: Housing
121a: inlet hole
122: Bending discharge passage
123: Rotary reducer
124:
125: Hydraulic pressure swivel
130: Extended drilling section
131: Rotating housing
131a:
132: drive plate
132a: first drive plate
132b: second drive plate
132c: third drive plate
133: seat plate
134: Upper and lower cylinder
135: air supply channel
136: Guide ball bush
137: Drive plate guide
140: hammer part
141: 1st hammer
142: 2nd hammer
143: Third hammer

Claims

A clamping part which is fixed in the inside of the propulsion casing in which the case is inserted as a hollow tube horizontally penetrated to the ground;
A rotation driving unit connected to the clamping unit;
An extension excavator connected to the rotary drive unit and rotatable by the rotation of the rotary drive unit; And
And a hammer part protruding from the extended excavation part and hitting a rock layer adjacent to the ground or the ground while linearly reciprocating,
The hammers are linearly reciprocating while rotating together with the rotation of the extension drill by the operation of the rotary drive unit, thereby uniformly hitting the ground or the rock layer,
Wherein the clamping portion comprises: a pair of propelling cylinders mounted on one surface of the case so as to be in parallel with the propelling casing; And a main discharge passage disposed between the pair of propelling cylinders across a center portion of the case,
Wherein the rotation driving unit includes: a housing having one side of the main discharge passage inserted therein and inserted into the propulsion casing with the pair of propulsion cylinders mounted thereon; A bending discharge passage bent so as to be adjacent to the inner peripheral surface of the housing and communicating with the main discharge passage; A rotation speed reducer disposed on a central axis line of the housing; And a rotary driving shaft disposed on a central axis line of the housing to be connected to the rotary speed reducer, wherein an inlet hole communicating with the folding and discharging passage is formed on one side of the housing adjacent to the rotary driving shaft. Excavation header for steel pipe propulsion.

The method according to claim 1,
The clamping unit
A casing inserted into the casing;
A guide structure which is a hollow rectangular parallelepiped fixed on a central axis line of the case;
A plurality of pairs of ribs radially disposed from the central axis of the case to connect the case and the guide structure;
A clamping cylinder disposed between the plurality of pairs of ribs and linearly reciprocating; And
And a pressing plate of an elastic material located on the upper side of the clamping cylinder,
Wherein the clamping cylinder linearly moves radially about a center axis of the case so that the clamping plate can be fixed while being in contact with the inner circumferential surface of the propelling casing while the clamping unit is inserted into the casing, Excavation Excavation Headers.

delete

The method according to claim 1,
The extension excavation unit,
A hollow rotary housing inserted in the propulsion casing and integrally rotatable with the rotary drive shaft;
A driving plate including a first driving plate, a second driving plate, and a third driving plate that are formed in order from an inner side of the rotating housing perpendicular to the rotating housing;
A seating plate fixedly disposed at a predetermined distance from the third driving plate;
A vertical cylinder connecting the upper surface of the rotary housing and the third drive plate;
An air supply passage passing through the upper surface of the rotary housing and disposed between the upper and lower cylinders and the rotary housing;
And a driving plate guide inserted in the third driving plate and guiding a linear reciprocating motion of the third driving plate in parallel with the air supply passage,
Wherein a plurality of discharge grooves formed radially from the central axis of the rotary housing and formed in the longitudinal direction are formed on an outer circumferential surface of the rotary housing.

6. The method of claim 5,
The hammer portion
A first hammer of 4 inch size arranged radially from the central axis of the rotary housing and fixed to the first drive plate;
An 8-inch-sized second hammer disposed on the central axis line of the rotary housing and fixed to the second drive plate;
And a third hammer having a size of 4 inches, which is connected to the third driving plate and is disposed to be inclined in a rotating direction of the rotating housing,
Wherein the first to third hammers are round-bar shaped, and a plurality of bits are formed at the ends thereof.

The method according to claim 6,
The end portions of the first to third hammers penetrate the lower surface of the rotary housing and are exposed to the outside,
The first hammer is located at the center of the rotary housing and the second hammer is disposed radially from the center of the rotary housing while surrounding the first hammer when the lower face of the rotary housing is viewed, Wherein the second hammers are disposed radially from the center of the rotary housing and are inclined at 12 to 17 degrees from the central axis of the rotary housing.

(a) a clamping portion, a rotation driving portion connected to one side of the clamping portion, an extended excavating portion connected to one side of the rotation driving portion and rotatable by the operation of the rotation driving portion, Inserting an excavation header for a small steel pipe including an exposed hammer portion into a propulsion casing and then fixing the excavation header to the propulsion casing;
(b) discharging the rock or the fragmented rock to the outside while striking the ground or rock layer in front of the hammer portion with the hammer portion that is linearly reciprocating while rotating by rotation of the extended excavation portion;
(c) separating the rotary drive unit, the extended excavation unit, and the hammer unit from the ground or rock layer in front of the hammer unit by 1 m;
(d) returning to step (b) until the hammer is exposed to the outside of the ground; And
(e) withdrawing the excavation header from the propulsion casing after the operation of the rotary drive unit and the hammer unit is terminated,
The excavation head for a small steel pipe in the step (a)
A clamping part which is fixed in the inside of the propulsion casing in which the case is inserted as a hollow tube horizontally penetrated to the ground; A rotation driving unit connected to the clamping unit; An extension excavator connected to the rotary drive unit and rotatable by the rotation of the rotary drive unit; And a hammer part protruding from the extended excavation part and hitting a rock layer adjacent to the ground or the ground while linearly reciprocating,
The hammers are linearly reciprocating while rotating together with the rotation of the extension drill by the operation of the rotary drive unit, thereby uniformly hitting the ground or the rock layer,
Wherein the clamping portion comprises: a pair of propelling cylinders mounted on one surface of the case so as to be in parallel with the propelling casing; And a main discharge passage disposed between the pair of propelling cylinders across a center portion of the case,
Wherein the rotation driving unit includes: a housing having one side of the main discharge passage inserted therein and inserted into the propulsion casing with the pair of propulsion cylinders mounted thereon; A bending discharge passage bent so as to be adjacent to the inner peripheral surface of the housing and communicating with the main discharge passage; A rotation speed reducer disposed on a central axis line of the housing; And a rotary driving shaft disposed on a central axis line of the housing to be connected to the rotary speed reducer, wherein an inlet hole communicating with the folding and discharging passage is formed on one side of the housing adjacent to the rotary driving shaft. Construction method of excavation header for steel pipe propulsion.

9. The method of claim 8,
The step (a)
(a1) inserting the excavation header into the propulsion casing; And
(a2) a plurality of clamping cylinders radially disposed from the central axis of the propelling casing, the pushing plates mounted on the plurality of clamping cylinders are brought into contact with the inner circumferential surface of the propelling casing, thereby fixing the clamping portions to the inner circumferential surface of the propelling casing The method comprising the steps of;

9. The method of claim 8,
The step (b)
(b1) rotating the extended excavation unit by applying a rotational force to a rotary drive shaft disposed on a central axis line of the housing of the rotary drive unit;
(b2) hitting the ground or rock layer by linearly reciprocating the hammer rotating together with the extended excavation unit; And
(b3) The gravel-like or unfragmented rock introduced into the plurality of discharge grooves formed in the longitudinal direction on the outer circumferential surface of the rotary housing of the excavation mounting portion passes through the inlet hole communicating with the folding discharge passage formed on one surface of the housing, And a hose connected to the outside of the ground via a main discharge passage communicating with the bending discharge passage. [7] The method according to claim 1, Way.