KR102119658B1 - Blind Type Leader for Air Hammer Excavating Equipment - Google Patents

Abstract

The present invention relates to a blind-type leader used in an air-hammer excavation apparatus which can safely and effectively discharge excavation soil slime. The blind-type leader comprises: a leader body (100) having a vertically installed pipe structure, wherein one side of a pipe is longitudinally opened in the vertical direction to function as a passage through which excavation soil slime lifted through an internal passage of an air-hammer excavation apparatus is moved into the pipe; a plurality of descent-inducing blinds (200) arranged at preset intervals in the vertical direction of the leader body (100) in the leader body (100), and inclined downwards towards the center of the leader body (100) to induce a descent of excavation soil slime moved into the leader body (100); a guide rail (300) vertically arranged along one side of the leader body (100) functioning as an inlet passage to excavate soil slime by guiding the ascent and descent of the air-hammer excavation apparatus; and a boom coupling unit (400) arranged on the other side of the leader body (100) to allow a boom (20) of construction equipment to be coupled thereto. In an excavation process, the blind-type leader is coupled to the boom of the construction equipment and is vertically installed on the ground to guide vertical ascents and descents of the air-hammer excavation apparatus. In an operation process of the air-hammer excavation apparatus, excavation soil slime lifted along the internal passage of the air-hammer excavation apparatus is moved into the leader body (100) by guiding of the descent-inducing blinds (200) to be lowered and discharged.

Description

Blind Type Leader for Air Hammer Excavating Equipment

The present invention relates to a blind type leader used in an air hammer excavation device, which is coupled to the boom 20 of construction equipment during the excavation process and installed in the vertical direction on the ground to guide the up and down direction of the air hammer excavation device. At the same time, during the operation of the air hammer drilling device, it is characterized in that the slime including the elevated circulation water, digging soil and arm pieces along the internal passage of the air hammer drilling device is discharged to the outside.

In general, in most cases, ground excavation for the basic construction must be preceded in a bridge, building, or civil construction. Soil excavation is performed using an excavation device. In particular, in the case of hard ground such as a rock, a special excavation device is required because excavation is not easy.

The most common rock excavation methods in the prior art include the reverse circulation drilling (RCD) method, the percussion rotation drill (PRD) method, and the improved MACH (Mud and Air Circulating Hammer) method. It is a method of excavating to the design depth by rotating the roller bit. Meanwhile, the PRD method and the MACH method are methods of excavating the ground by rotating the hammer bit while hitting it with compressed air.

1 to 3, a conventional excavation method (MACH method, PRD method) is exemplified. Usually, the ground is composed of a sediment layer 2 on the surface and a rock layer 1 below it, and is excavated from the surface or In the case of rivers or the sea, excavation is performed after installing the support structure 3 on the water surface.

The excavation device vertically stands the leader 5 from the base machine 4, and along the leader 5, the excavation rod 8 is installed to be movable up and down by a rope 6 or the like, from the ground surface to a predetermined depth (usually A casing pipe 9 for protecting the inside of the excavation hole is installed at the upper part of the rock layer of the deep part, and a hammer 10 equipped with one or more bits 11 is positioned below the drilling rod 8.

According to the MACH method, while rotating the drilling rod 8 by the rotating body 18 installed on the base machine 4, the hammer 10 is operated with compressed air supplied from the air compressor 12, and the bottom of the excavation hole is operated. Excavate the rock.

Compressed air and circulating water are supplied through the air compressor (12), the air supply pipe (13), the air supply path (82) and the circulating water supply pipe (14) in the rod (8) and the excavation hole (9). The excavated soil (including excavated rock pieces, hereinafter referred to as excavated soil) is discharged to the ground through the excavated soil discharge path 86 inside the rod 8.

In addition to the inside of the rod 8, an air discharge path 84 through which compressed air is discharged is connected to the air discharge pipe 17. A rotating connecting portion 7 for connecting compressed air and circulating water to the rotating rod 8 is installed at the upper portion of the rod 8. The excavated soil that has risen up to the rotary connecting portion 7 may be processed by moving toward the excavated soil collecting portion 15 through the discharge pipe 16.

Typically, the excavated soil generated during excavation is discharged to the ground along with the circulating water. As such, the excavated soil mixed with the circulating water is mixed with a large amount of air bubbles because it uses an air compressor to remove the excavated soil. . Due to this, stagnation and/or clogging frequently occurs in the portion of the earthing pipe 16 on the ground, and thus, the discharge of the excavated soil does not occur smoothly.

In addition, in the case of the PRD method, during the excavation work, the slime of the excavated soil is ejected from the excavation hole (see FIG. 3), and workers in the excavation work often overturn the muddy water. The congestion of the excavated soil and/or the clogging of the discharge pipe causes problems such as damaging various devices such as a motor while not smoothly discharging the excavated soil, and furthermore, a problem of slowing the excavation speed or making excavation itself impossible It is also ordered.

Therefore, there is an urgent need for a technology that allows the speed of excavation work to be improved by eliminating the stagnation of excavated soil inside the discharge pipe that inhales and discharges the excavation slime generated during excavation.

[Advanced technical literature]

Registered Patent No. 10-0419973

Public Utility No. 20-2010-0005138

Published Patent No. 10-2018-0019318

The present invention, created to solve the above problems, aims to provide a new concept leader equipped with a function for safely and effectively discharging excavated slime consisting of water, excavated soil, and arm pieces. .

The present invention, created to achieve the above object, relates to a blind type leader used in an air hammer excavation device, and is a tube structure installed in the vertical direction, and one side of the tube is opened long in the vertical direction (longitudinal direction) to open the air A leader body 100 serving as a passage through which the excavated soil slime raised through the inner passage of the hammer drilling device flows into the tube body; Inside the leader body 100 is disposed at predetermined intervals along the vertical direction (longitudinal direction) of the leader body 100, so as to induce the digging of the digging soil slime flowing into the interior of the leader body 100 A plurality of descending induction blinds 200 forming a downward slope toward the center of the leader body 100; A guide rail 300 that is provided in the vertical direction (longitudinal direction) along one side of the leader body 100 serving as an inlet passage of the excavated soil slime to guide up and down of the air hammer drilling device; And, the leader body 100 is provided on the other side of the boom stand 20 of the construction equipment is coupled to the boom stand coupling part 400; is composed, including, in the excavation process is coupled to the boom stand 20 of the construction equipment ground It is installed in the vertical direction to guide the up and down in the vertical direction of the air hammer drilling machine, and at the same time, the digging soil slime elevated along the internal passage of the air hammer drilling machine in the course of the operation of the air hammer drilling machine is the descending induction blind 200 According to the guide, it is characterized in that it flows into the leader body 100 and is discharged downward.

Technical effects according to the configuration of the present invention are as follows.

First, it is possible to maximize excavation construction efficiency by safely and effectively discharging excavated soil slime generated during the excavation process.

Second, the length of the leader body 100 can be appropriately changed according to the depth of excavation, and the digging soil slime can be stably discharged without any manipulation even if the air hammer excavation device descends as the construction is performed.

Third, as a new type of blind leader with integrated excavation slime discharge function integrated into the leader mounted on the boom stand 20 of construction equipment, a separate supporter that guides the ascent and descend of the air hammer excavation device is unnecessary.

1 to 3 exemplarily illustrate the prior art.
4 shows the setting structure of the entire equipment in the PRD method.
5 shows a cross-sectional structure of the present invention applied to the PRD method.
Figure 6 shows the setting structure of the entire equipment in a reverse circulation mode.
7 shows a cross-sectional structure of the present invention applied to the reverse circulation method.
8 exemplarily shows the structure of the leader body 100 of the present invention that is coupled to the bottom.
9 is another specific embodiment of the leader body 100 of the present invention coupled to the bottom, showing a case where the slope 150 is added.
10 shows the injection nozzle 130 and the pulley 140 provided at the upper end of the leader body 100 of the present invention.

Hereinafter, a specific embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

The present invention relates to a blind type leader used in an air hammer drilling device, and includes a leader body 100, a descending induction blind 200, a guide rail 300, and a boom-to-joint portion 400.

The blind reader of the present invention can be used in various types of air hammer drilling apparatus, FIGS. 4 and 5 show a case applied to the PRD method, and FIGS. 6 and 7 show a case applied to the soft circulation method.

The air hammer excavation apparatus applied to the PRD method includes a single auger 13, a screw rod 15, a double auger 11, a casing 16, and a DTH hammer 19 as shown in FIGS. It is composed of, and coupled to a structure that moves up and down along the leader body 100 mounted on the boom 20 of the construction equipment, and the air hammer excavation device has a bar structure and functions that do not differ significantly from the products already commercialized. Separate detailed description is omitted.

In addition, the blind reader of the present invention may not be installed only in the vertical direction as illustrated in the drawings, and is installed and used in a tilted state to be connected to the boom of the construction equipment to achieve an inclination at a predetermined angle. Poem).

Digging soil slime generated in the process of drilling (digging) rises along the inside of the air hammer drilling rig, and then, as shown in FIG. 5, passes through the guide passage provided on one side of the double auger 11 into the leader body 100. Is delivered.

In this process, the water transferred to the double auger 11 is sprayed through the double auger sprayer 12 so that the excavated soil slime can be smoothly transferred into the leader body 100 through the induction passage.

The air hammer drilling device applied to the reverse circulation method includes a single auger 13, a water swivel 17, a reverse circulation rod 18 and a DTH hammer 19, as shown in FIGS. It is combined in a structure that moves up and down along the leader body 100 mounted on the boom stand 20 of the equipment, and these air hammer digging devices provide a detailed description of the bar structure and functions that do not differ significantly from the products already commercialized. Omitted.

In the case of the reverse circulation method, the digging soil slime generated in the process of drilling (digging) rises along the inside of the air hammer excavator, and then leads through a guided passage provided on one side of the water swivel 17 as shown in FIG. The body 100 is transmitted inside.

The leader body 100 constituting the present invention is mounted on the boom 20 of the construction equipment as shown in FIGS. 4 to 7 and is erected in the vertical direction to serve to guide vertical movement of the air hammer drilling device and excavate at the same time. It acts as a descending passage for To Slime.

The leader body 100 is a structure connected in multiple stages as shown in FIGS. 4 to 7, and the overall length (height) can be adjusted by increasing or decreasing the number of stages connected according to the depth of excavation.

The structure of the leader body 100 is the same, and the length of each leader body 100 is manufactured to different standards, and if the number of connected stages is appropriately increased or decreased, the entire length can be variously set.

In addition, the inner surface of the leader body 100 can be treated with abrasion-resistant rubber coating, etc. Through this, it is possible to protect the inner surface of the leader body 100 while absorbing shock and reducing noise.

The leader body 100 is a tube structure installed in the vertical direction (longitudinal direction), and one side of the tube body constituting the leader body 100 is opened long in the vertical direction and excavated soil raised through the internal passage of the air hammer drilling device Slime acts as a passage into the tube body.

The descending induction blinds 200 are arranged at predetermined intervals along the vertical direction (longitudinal direction) of the leader body 100 inside the leader body 100, of the digging soil slime flowing into the leader body 100. The downward slope toward the center of the leader body 100 to induce the descent, while the digging soil slime transmitted through the induction passage of the double auger 11 or the water swivel 17 of the air hammer drilling device descends along the inclined surface. Naturally, it is allowed to flow into the space inside the leader body 100.

These descending induction blinds 200 are continuously arranged along the vertical direction (longitudinal direction) of the leader body 100 so that even if the air hammer drilling device descends as the drilling (digging) progresses, the digging soil slime is the leader body 100 Keep it flowing in the interior space stably.

The surface of the descending induction blind 200 can also be treated such as wear-resistant rubber coating.

The guide rail 300 is provided in the vertical direction (longitudinal direction) along the left and right sides of one side of the leader body 100 (one side that becomes the inflow passage of the excavation soil slime) to serve to guide the lifting and lowering of the air hammer drilling device. do.

Therefore, although not separately shown in the accompanying drawings, the air hammer drilling device should be provided with a guide groove portion in a shape corresponding to the shape of the guide rail 300 so as to engage the guide rail 300, single auger 13 or double auger (11) Such a guide groove may be provided.

The boom stand coupling portion 400 is provided on the other side of the leader body 100 as shown in Figure 5 or 7 is coupled to the boom stand 20 of the construction equipment.

Boom rod coupling portion 400 is a structure capable of protruding a certain area from the leader body 100 to be pinned with the end of the boom rod 20 of the construction equipment is sufficient, and does not require a special structure or shape.

FIG. 8 exemplarily shows a structure of the leader body 100 coupled to the bottom of the leader body, except that the lower cross-section is blocked and the outlet 110 is provided to the side. Is the same as

The outlet 110 provided at the lower portion of the leader body 100 is provided in a number of different directions (for example, one on the left side, one on the right side, and one on the back side) to be selectively opened. .

Although the opening method is not separately illustrated, a method of blocking the outlet 110 by fixing the cover with a bolt or a pin may be selected, or a method of manufacturing the cover in the form of a pivoting door may be selected.

The discharge port 110 serves as a passage through which the digging soil slime descending through the inside of the leader body 100 is discharged to the outside. By selectively opening the discharge port 110 provided in different directions as necessary, the discharge direction Can be changed.

9 is another specific embodiment of the leader body 100 of the present invention that is coupled to the bottom, showing a case where the slope slope 150 is added, excavating soil into the sedimentation tank 21 through the slope slope 150 Slime can be discharged stably. The inclined slope 150 may be separated as necessary.

Figure 10 shows the injection nozzle 130 and the pulley 140 provided at the upper end of the leader body 100 of the present invention, the top sieve 120 coupled to the upper end of the leader body 100 for the lower inner reader A spray nozzle 130 is provided to spray the water supplied from the sprayer 14 at a high pressure into the interior space of the leader body 100 so that the excavated soil slime descends easily along the descending induction blind 200 and inside the leader body 100 It can be introduced into the leader body 100, it can be discharged downward to the interior space.

In addition, a plurality of pulleys 140 rotating in engagement with a winch wire of a construction equipment are provided on the upper outer side of the top sheave 120 to wire a single auger 13 or a double auger 11 of the air hammer rig. It acts as a guide when ascending and descending.

As described above, specific embodiments of the present invention have been described with reference to the accompanying drawings, but the protection scope of the present invention is not necessarily limited to these embodiments, and various design changes within a range that does not change the technical gist of the present invention, Even in the case of addition or deletion of known technology, simple numerical limitation, etc., it is apparent that it falls within the protection scope of the present invention.

11: Double Auger
12: Double Auger Sprayer
13: Single auger
14: Leader sprayer
15: screw rod
16: Casing
17: Water swivel
18: Reverse circulation rod
19: DTH hammer
20: Boom stand
21: settling tank
100: leader body
110: outlet
120: Top sheave
130: spray nozzle
140: pulley
150: Slope
200: falling induction blind
300: Guide rail
400: boom rod coupling

Claims (5)

As a blind type leader used in an air hammer excavation device,
As the tube structure installed in the vertical direction, one side of the tube body is opened long in the vertical direction (longitudinal direction) and the leader body acts as a passage through which the excavated soil slime raised through the internal passage of the air hammer drilling device flows into the tube body ( 100);
The leader body 100 is disposed at predetermined intervals along the vertical direction (longitudinal direction) of the leader body 100 to the inside of the leader body 100, so as to induce the digging of the digging soil slime flowing into the leader body 100. A plurality of descending induction blinds 200 forming a downward slope toward the center of the leader body 100;
A guide rail 300 provided in the vertical direction (longitudinal direction) along one side of the leader body 100 serving as an inlet passage of the excavated soil slime to guide up and down of the air hammer drilling device; And,
A boom stand coupling part 400 provided on the other side of the leader body 100 to which a boom stand 20 of construction equipment is coupled;
It comprises,
In the course of excavation, it is coupled to the boom stand 20 of the construction equipment and installed in the vertical direction on the ground to guide the up and down direction of the air hammer excavation device, and at the same time, the internal passage of the air hammer excavation device during the operation of the air hammer excavation device. A blind reader for an air hammer excavation device, characterized in that the excavated soil slime accordingly flows into the leader body 100 according to the guidance of the descending induction blind 200 and is discharged downward. In claim 1,
In the lower portion of the leader body 100,
An outlet 110 through which the digging soil slime descending through the inside of the leader body 100 is discharged to the outside;
It is provided in a number of different directions, it is possible to change the discharge direction by selectively opening as required Blind type reader for the air hammer excavator. In claim 1,
On the upper end of the leader body 100,
An injection nozzle (130) for spraying water supplied at high pressure into the leader body (100);
Blind type reader for the air hammer drilling device, characterized in that provided. In any one of claims 1 to 3,
The leader body 100 is a multi-stage structure, a blind reader for an air hammer drilling rig, characterized in that the number of stages connected according to the depth of digging can be adjusted to adjust the overall length (height). In any one of claims 1 to 3,
On the upper end of the leader body 100,
A plurality of pulleys 140 that rotate in engagement with a winch wire of the construction equipment;
Is equipped with a blind leader for the air hammer drilling device, characterized in that acts as a guide when lifting and lowering the auger of the air hammer drilling device with a wire.

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