KR20150112636A - Pile cutting device - Google Patents

Abstract

The present invention provides a pile cutting device capable of providing work safety and improving workability by mechanically cutting an upper end of a pile when an upper part of a concrete pile pressed and constructed on the ground is straightly cut for a purpose such as a ground construction on a construction site. The pile cutting device comprises: a support unit having a fixing bracket on the upper end in correspondence to a bucket connection unit on a front end of an arm of an excavation, and connected to the bucket connection unit by a fixing pin; a pile case arranged on the front of the support, having a cylindrical pillar on both sides, having an inner circumference capable of enclosing the pile, and having first and second case members rotating a support unit by connecting the support unit by a hinge; first and second opening and closing hydraulic cylinders, wherein a body and a rod are connected to the front end of the support unit and an upper side of the first and second case members by the pin; clamping protrusions protruding from the inner surface of the first and second case members; an arc-shaped cutter installation plate having a roller connected to an upper and lower guide grooves, formed in a circumferential direction in a middle and a lower part of the first and second case members, on both upper and lower sides; a cutter fixated to the cutter installation plate installed to be exposed to the lower side of the pile case; a cutter driving motor driving the cutter; a rack installed in the pile case in the circumferential direction; a pinion moving along a rack; and an installation plate moving motor fixated to the cutter installation plate to drive a pinion.

Description

Pile cutting device

The present invention relates to a pile cutting method and a pile cutting method which can mechanically cut the upper end of a pile of concrete pile to be grounded in a construction site, Device.

 In general, in order to construct all structures such as concrete buildings, bridges or soil damages and various dams on the ground, foundation work is carried out to lay concrete files and H-shaped steel files in order to withstand the weight of the structure. In the case of the ground, a foundation work is carried out to fix the pile to the rock in the basement below the earth's surface. In this way, the work of putting the files on the ground in the foundation works is called the pest operation. After the pest is put on the ground surface, the remaining concrete files protruding out of the ground surface are cut and the additional work is easy .

Concrete files protruding to the ground after the ordinary hammering operation are crushed by a crusher mounted on an excavator or an operator cuts the crusher with a chainsaw.

In recent years, a file cutting apparatus has been disclosed which is coupled to an excavator in consideration of workability improvement and the like. As a representative example, there is a concrete file cutting apparatus of the Korean Utility Model Registration Bulletin (Y1) 20-0355705 (June 30, 2004) The structure includes a fork-cone connecting body formed to connect a fork-crane, a cylindrical gripping body divided into two parts for opening and closing by the fork-cone connecting body and the body connecting part, A body fixing part for fixing a cutting device by holding a concrete file, a body fixing part for fixing the cutting device, a body fixing part for fixing the fixing device, a body connecting part for connecting the fixing part to the fork- And a body connector for connecting the grip body and rotating the grip body, A circular saw which is formed by rails below the file grasping portion and is formed so that the circular saw is rotated by the outer surface of the concrete pile, a cutting member formed to cut the concrete file, and a hydraulic motor Respectively.

In another embodiment, a file head cutting apparatus of Korean Patent Registration No. B1-1317554 (Oct. 16, 2013) is provided. In the apparatus for cutting a head of a file, A circular rail wrapped around the neck portion in a ring shape and fixed by tightening force; A cutter moving carriage positioned on the outer side of the circular rail and moving along the circumference of the pile while being supported by the rolling contact; A cutter support arm rotatably hinged to one end of the cutter moving carriage and rotated; And an electric cutter fixedly mounted at a distal end of the cutter support arm, wherein the cutter support arm is moved in the circumferential direction by a predetermined pitch while the electric cutter is operated, and at the same time, the cutter is moved in the radial direction Configured to cut the file; The circular rail includes a pair of hinge plates having a hinge axis; An upper ring and a lower ring each of which is divided into a semicircle and connected at one end to the pair of hinge plates to open and close; A spacer which is connected to the upper and lower rings and is arranged at regular intervals in the circumferential direction so as to form a constant gap between the file and the upper and lower rings; And clamping means provided at the other divided end of the upper ring and the lower ring for clamping the diameter of the upper and lower rings to fix the circular rail.

However, in the above-mentioned prior arts, the circular saw or the rotary cutter is manually pushed to move the cutter. Therefore, when the concrete file is cut, the cutter or the cutter support arm, There is a difficulty in carrying out the efficient operation continuously.

KR 200355705 Y1 2004.06.30. KR 101317554 B1 201 October 16,

Accordingly, the present inventor has researched all the problems of cutting a file depending on the above-described conventional manual work. The present invention can easily move to various positions by being coupled with an excavator, The present invention has been accomplished on the basis of the technical object of the present invention with the object of providing a file cutting device which can improve the workability and ensure the work safety by cutting the file by driving the cutter using the strong oil pressure of the excavator .

According to an aspect of the present invention, there is provided a hydraulic excavator comprising: a support having a fixing bracket corresponding to a bucket coupling portion of an arm end of an excavator, the coupling bracket being coupled to the bucket coupling portion by a fixing pin; A first case member which is disposed in front of the support body and which has a cylindrical column having an inner diameter capable of wrapping the file, the first and second case members being rotatable by pivoting the support column with a hinge; A first and a second hydraulic cylinders for opening and closing the first and second cases, respectively, wherein the body and the rod are coupled to the tip of the support body and the upper side surfaces of the first and second case members, respectively; Clamping protrusions protruding from the inner surface of the first and second case members; An arc-shaped cutter mounting plate having upper and lower rollers coupled to upper and lower guide grooves formed in the center and lower sides of the first and second case members in the circumferential direction; A cutter driving motor for driving a cutter and a cutter to be fixedly installed on a cutter mounting plate installed to be exposed to the lower side of the pile case; A rack installed in the pile case in a circumferential direction; And a mounting plate moving motor fixed to the cutter mounting plate to drive the pinion and the pinion moving along the rack.

The use of the file cutting apparatus provided in the present invention has the following effects in cutting the upper end of a concrete pile laid on the ground for building a foundation in a construction site.

Compared with the file cutting device which depends on the existing manpower, the cutting efficiency is excellent and it is possible to cut quickly.

The excavator arm is installed in the excavator and uses the hydraulic pressure of the excavator. Therefore, mobility is ensured, and an electric facility or a dedicated hydraulic unit is not required for the pile cutting device.

Even if the operator is not near the file to be cut, there is no fear of industrial disaster because fast and accurate file cutting is done.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an external perspective view showing a preferred embodiment of a file cutting apparatus provided by the present invention; Fig.
Fig. 2 is an exploded perspective view of Fig.
3 is a front view of the assembled state of the file cutting apparatus provided by the present invention.
4 is a plan view of an assembled state of the file cutting apparatus provided by the present invention;
5 is a side cross-sectional view showing a state in which the cutter mounting plate of the file cutting apparatus provided by the present invention is engaged;
6 is a plan view showing a state in which the cutter mounting plate of the file cutting apparatus provided in the present invention is moved in the circumferential direction along the file case
7 is a side sectional view showing an example in which another embodiment of the upper and lower guide grooves is applied in the file cutting apparatus provided by the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a file cutting apparatus provided in the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a preferred embodiment of a file cutting apparatus provided in the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIGS. FIG. 5 is a side sectional view showing a state in which the cutter mounting plate of the file cutting apparatus provided by the present invention is engaged. FIG. 6 is a side view of the cutter mounting plate of the file cutting apparatus provided in the present invention, And a flat section showing the moving state, respectively.

The file cutting device 1 provided in the present invention is designed to cut the upper end of the file 100 mechanically when cutting the upper end of the file 100 to be grounded in the ground, Thereby improving workability and providing work safety.

The file cutting apparatus 1 of the present invention has a pair of fixing brackets 3 facing each other on an upper portion of a support 2 and a bucket coupling portion The fixing pin 4 is engaged with the fixing bracket 3 and the pin hole formed in the bucket coupling portion 30 so as to be coupled with each other. At this time, a plurality of pin holes are formed in the fixing bracket 3 and the bucket coupling portion 30 and the support body 2 is fixed to the bucket coupling portion 30 by coupling the fixing pin 4, So that the support body 2 can be rotated like the bucket when the part 30 rotates.

A pile case (5) is arranged in front of the support (2). The pile case (5) is constituted by first and second case members (6) and (7) that are divided in the axial direction so as to have a cylindrical columnar shape in a combined state. One of the first and second case members 6 and 7 which are bisected at this time is directed toward the support 2 and the upper end of the grounding portion is connected to the first and second case members 6 and 7 7).

The first and second case members 6 and 7 of the pile case 5 are connected by the first and second opening and closing hydraulic cylinders 9 and 10 to the front end of the supporting body 2, And the bodies 9a and 10a and the rods 9b and 10b of the two opening and closing hydraulic cylinders 9 and 10 are connected to the front end of the support body 2 and the first and second case members 6 and 7 The first and second case members 6 and 7 are engaged with the hinge 8 when the rods 9b and 10b of the first and second opening and closing hydraulic cylinders 9 and 10 are pulled out, When the rods 9b and 10b of the first and second opening and closing hydraulic cylinders 9 and 10 are retracted, the first and second case members 6) 7 can be detached from the file 100 while opening and rotating outward around the hinge 8.

A plurality of clamping projections (11) are formed on the inner surface of the first and second case members (6) and (7). The clamping protrusions 11 are capable of pressing and clamping the file 100 in the circumferential direction of the file 100 when the file case 5 is in a closed state. Four in the circumferential direction at an angle, and two in each of the first and second case members 6 and 7, and four rows in the axial direction.

Upper and lower guide grooves 12 and 13 are formed in the middle and lower sides of the first and second case members 6 and 7 in the circumferential direction. The upper guide groove 12 is formed in the first and second case members 6 and 7 with a tangent groove at an oblique angle or a guide groove (14).

The lower guide grooves 13 formed below the first and second case members 6 and 7 may be formed by forming grooves opened downward in the first and second case members 6 and 7 at an engraved angle, And the guide ring 15 attached to the first and second case members 6 and 7 is formed with a downwardly opened groove.

The upper and lower guide grooves 12 and 13 are formed in the first and second case members 6 and 7 after being processed before the first and second case members 6 and 7 or the guide rings 14 and 15 are bent ) Or the guide rings (14, 15).

The upper and lower guide grooves 12 and 13 are provided with a roller 17 provided on the inner side of the cutter mounting plate 16 having a curvature concentric with the pile case 5 to connect the cutter mounting plate 16 to the upper and lower guide grooves 12, So that it can revolve in the circumferential direction along the grooves 12 (13).

The cutter mounting plate 16 is provided with a mounting plate moving motor 18 on the upper side and a cutter driving motor 21 on the lower side.

A pinion 19 is engaged on the axis of the mounting plate moving motor 18 and the pinion 19 is engaged with the rack 20 installed in the circumferential direction of the first and second case members 6 and 7 , And the cutting cutter (22) located below the pile case (5) is engaged on the axis of the cutter driving motor (21). This configuration causes the cutter mounting plate 16 to revolve along the rack 20 provided on the first and second case members 6 and 7 when the mounting plate moving motor 18 is driven. The file 22 is cut off while the file 100 is being driven.

According to the file cutting apparatus 1 of the present invention constructed as described above, since it is installed at the end of the arm of an excavator and used, it is convenient to work by being easily moved to various positions in a construction site. The operation according to the present invention will be described.

When the file 100 is to be cut by using the present invention, the first and second openable and closable hydraulic cylinders 9 and 10 are loaded with the rod 9b The first and second case members 6 and 7 are opened in a state in which the first and second case members 6 and 7 are pivoted outwardly with respect to the hinge 8 to be opened, The inside of the file 100 is inserted.

In this state, when the rods 9b and 10b of the first and second opening and closing hydraulic cylinders 9 and 10 are pulled out, the first and second case members 6 and 7 rotate inward about the hinge 8 At this time, the clamping protrusions 11 formed inside the first and second case members 6 and 7 press the file 100 while clamping it. When the first and second case members 6 and 7 rotate inward about the hinge 8 as described above, the cutter driving motor 21 installed on the cutter mounting plate 16 is driven to cut the cutter 22, the cutting of the cutting cutter 22 is started as the first and second case members 6, 7 are closed.

When the mounting plate moving motor 18 installed on the cutter mounting plate 16 is driven in a state where the file 100 is fully clamped by using the first and second case members 6 and 7 as described above, The pinion 19 provided on the shaft of the plate moving motor 18 moves along the rack 20 provided on the first and second case members 6 and 7. At this time, The cutter 22 cuts the file 100 in the circumferential direction.

When the cutting of the file 100 is completed, the rods 9b and 10b of the first and second opening and closing hydraulic cylinders 9 and 10 are pulled so that the first and second case members 6 and 7 are hinged to the hinge 8, And the other file 100 is cut in the same manner as described above.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of protection of the present invention should not be limited to the described embodiment, but should be determined by the equivalents as well as the claims that follow.

1: file cutting device 2: support
3: Retaining bracket
4: Fixing pin 5: File case
6,7: First and second case members 8: Hinge
9, 10: first and second opening and closing hydraulic cylinders 9a, 10a:
9b, 10b: rod 11: clamping projection
12: upper guide groove 13: lower guide groove
14, 15: Guide ring 16: Cutter mounting plate
17: roller 18: mounting plate moving motor
19: Pinion 20: Rack
21: cutter driving motor 22: cutting cutter
30: bucket coupling unit 100: file

Claims (1)

1. A pile cutting device (1) installed on an excavator, comprising:
A support body 2 having a fixing bracket 3 corresponding to a bucket coupling portion 30 of a rocking end of an excavator formed at an upper end thereof and coupled to the bucket coupling portion 30 by a fixing pin 4;
The first and second case members are disposed on the front side of the support body 2 so that the cylindrical column having an inner diameter capable of wrapping the pile 100 is divided into left and right sides and the support body 2 is coupled with the hinge 8, (6) and (7);
The first and second opening / closing members 10a and 10b are connected to the front end of the support body 2 and the upper side surfaces of the first and second case members 6 and 7, A hydraulic cylinder (9) (10);
Clamping protrusions (11) protruding from inner surfaces of the first and second case members (6) and (7); A roller 17 coupled to upper and lower guide grooves 12 and 13 formed in the middle and lower sides of the first and second case members 6 and 7 in the circumferential direction is mounted on both upper and lower sides of an arcuate cutter mounting plate 16);
A cutter driving motor (21) for driving the cutter (22) and the cutter (22) fixedly installed on the cutter mounting plate (16) installed so as to be exposed below the pile case (5);
A rack (20) installed in the file case (5) in the circumferential direction; And a mounting plate moving motor fixed to the cutter mounting plate to drive the pinion and the pinion moving along the rack.

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