JP2974926B2 - Razor machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filing machine, and more particularly to a filing machine which is most suitable for use on a surface of a pile buried underground in an existing structure.

[0002]

2. Description of the Related Art For example, as schematically shown in FIG. 15, when a building or other existing structure 1 exists on the ground and a new basement or the like is constructed under the basement 2 or under the basement 2 of the structure 1, To excavate and excavate the ground on which the retaining pile 3 and the foundation pile 4 of the existing building 1 are struck, and construct a new underground building in the hollow portion 5, excavate and excavate the underground. The concrete on the surface of the pile exposed in the hollow portion 5 is removed by manual filing (sharpening), and in the foundation pile 4 as shown in FIG. 12, the core steel pipe 6 is replaced with the soil pile as shown in FIG. In No. 3, it is necessary to expose the flange surface of the H-shaped steel 7 as the core material, and to fix a new construction material thereto by welding or bolts.

[0003]

However, as in the above-mentioned conventional method, it is not easy to manually cut the concrete of the pile, not only is it difficult to perform the work, but also the work requires a long time, Was also the cause of extension. In addition, there are various problems, such as in the case of a retaining pile, in which it is extremely difficult to uniformly align the filed surfaces with high accuracy by the above manual operation.

[0004] In view of the above, an object of the present invention is to provide a scraper capable of performing a concrete scraping operation of a pile under the existing structure with high efficiency and accuracy.

[0005]

As a means for solving the problems of the prior art, the present invention provides a work machine which can be loaded into an underground excavation space of an existing building by supporting the upper end by a boom to mount a leader. The cutter support arm for vertically supporting the cutter for cutting is rotatably supported by the reader, and the reader is provided with an elevating device for lifting and lowering the cutter support arm. It is characterized by having a cutter position control device for numerically controlling the position of the drive device and the cutter.

[0006] In order to better cope with the subject of the chipping,
4. A cutter support arm for supporting the cutter rotatably about a horizontal axis or a cutter support arm for supporting the cutter rotatably about a vertical axis. The cutter is rotated integrally with a mounting tap which is rotated by a driving device fixedly mounted on a mounting substrate, and a top plate portion of a cutter body having a cylindrical shape and having a large number of chips on an outer peripheral surface is integrally rotated. A fourth aspect of the present invention is configured such that the drive device is mounted in the cutter body.

[0007]

[Function] After excavating and excavating the underground of the existing structure, the work machine is carried into the underground space formed by this, and the boom supports the upper end of the leader and hangs down, and the cutter support arm is attached to the leader. I do. Next, the work machine is brought closer to the retaining pile or foundation pile exposed in the cavity, the cutter is positioned on the surface of the pile, the cutter driving device is driven to rotate the cutter, and the cutter position control device is used to cut the cutter. And control the movement to the left and right to remove the concrete on the pile surface. The vertical position of the cutter can be adjusted to a desired height position over a desired range by vertically moving the cutter support arm along the reader by an elevating device provided on the reader.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows a side view of an embodiment of a filing machine according to the present invention. The working machine 10 used for this is a crawler type, and its width is small enough to be carried in from a vertical pile. belongs to.

A base of a boom 11 is attached to the work machine 10 by a shaft 12, and a piston rod 14 of a hydraulic cylinder 13 whose base is pivotally supported by the work machine 10 is connected to an intermediate position of the base. The boom 11 is raised and lowered by the expansion and contraction operation of the cylinder 13.

An upper end of a reader 15 is connected to a tip of the boom 11 by a shaft 16 and hangs down. A lower end of the boom 11 has a grounding piece 17 for stable grounding. Machine 10 is catchhawk 1
8 are connected. The catch fork 18 has a manual handle 19 for adjusting the length.

A base of a cutter supporting arm is cantilevered by the reader 15 so as to be vertically movable.

There are two types of support arms which are selectively used depending on the object to be split, and one of them supports the cutter 20 for rotation about a horizontal axis as shown in FIGS. 1, 2 and 3. There are a cutter support arm 21A and a cutter support arm 21B for rotatably supporting the cutter 20 around a vertical axis as shown in FIGS.

Any of the above-mentioned cutter supporting arms 21A, 2
The support means for the 1B reader 15 is exactly the same,
2 and 3 will be described for convenience, and the same reference numerals will be given to FIGS. 4 and 5.

A total of eight bearing-containing rollers 23, 2 are provided on the base 22 of the cutter supporting arm 21A, four in front and rear.
Are provided, which abut against the flange surfaces of the H-shaped steels 24, 24 on the left and right side surfaces of the leader 15, and the base 2
A total of four rollers 25, 25,... Are provided on the upper, lower, left, and right sides of the H-shaped steels 24, 24 so that they are in contact with the abdominal surfaces of the H-shaped steels 24, 24. It has been done.

The cutter supporting arm 21A is connected to the reader 1
5 is suspended by a wire 27 such as a wire or chain via a sheave 26 at the upper end of the wire 5, and the lifting and lowering device including a hydraulic cylinder or the like in the leader 15 raises and lowers the wire 27 to raise and lower the cutter support arm 21A. It has become.

As shown in FIGS. 9 to 11, the cutter 20 supported by the cutter support arms 21A and 21B has a cylindrical support member 29 fixedly mounted on one surface side of a mounting substrate 28. Inside the motor 30 as a driving device
And a speed reducer 31, and a drive shaft 32 is rotated through the speed reducer 31.
The top plate portion 35 of the cylindrical cutter body 34 is bolted to the mounting tap 33 fixed to 2 so as to be integrally rotated via a key 36.

The peripheral surface 34a of the cutter body 34
A required number of guide rollers 3 extend near the base of the support member 29 and are provided on the inner peripheral surface of the cutter body 34 near the base.
The rollers 37 and 37 are rotatably mounted on bearings 38 so that the rollers 37 and 37 are in contact with the outer peripheral surface of the support member 29 so that the root portion of the cutter body 34 does not swing when the cutter body 34 rotates. The peripheral surface 3 of the cutter body 34
A number of chips 39 are provided on the outer surface of 4a in a spiral arrangement.

A mounting shaft 40 protrudes from the center of the opposite surface of the mounting substrate 28. Cooling air holes 41 and 42 are formed in the substrate 28 and the supporting member 29, and support holes are formed from these holes. The cooling air is circulated through the member 29 to cool the motor 30.

The configuration of the cutter mounting portion of the cutter supporting arm 21A is such that sliding surfaces 43, 43 are provided on both sides near the tip of the cutter supporting arm 21A, and the cutter supporting arm 21A is provided with the sliding surfaces 43, 43 at the sliding surfaces 43, 43. Hole 4 provided
Sliding plates 46, 46 are inserted into bolts 45 passing through the sliding plates 4, 44,
6 and 46 are slidable on the sliding surfaces 43 and 43.

A slider 48 fixed to the center of the bolt 45 is slidable along a guide groove 49 in the Y-axis direction formed on the cutter support arm 21A. Is connected to a piston rod 51 of a Y-axis control cylinder 50 fixedly mounted.

The mounting board 28 of the cutter 20 is fixed to the slide plate 46 by bolts or the like, and is mounted so that the cutter body 34 is driven to rotate about a horizontal axis.

The other cutter support arm 21B (FIGS. 4 to 6) has a cutter mounting portion perpendicular to the vertical direction of the base 22, and has a sliding surface 52 provided on the upper surface thereof. Have rails 53 in the X-axis direction
And rails 54 in the Y-axis direction slidable along the rails 53 are provided, and the slider 48 is slidably fitted to the rails 54 in the Y-axis direction.
The piston rod 51 of the Y-axis control cylinder 50 supported between the rails 54, 54 is connected to the slider 48. An X-axis control cylinder 55 is provided on the cutter support arm 21B, and a piston rod 56 of the cylinder 55 is connected to the rails 54 in the Y-axis direction.

A mounting shaft 40 projecting from the lower surface of the mounting substrate 28 of the cutter 20 is fitted and fixed to the slider 48.
The sliding surface on the lower surface of the mounting board 28 slides on the sliding surface 52.

FIGS. 7 and 8 show the cutter supporting arm 21B.
2 shows the entire side surface and the plane in a state where the cutter 20 is attached.

Next, the operation will be described.

After excavating and excavating the underground of the existing structure 1, the working machine 10 is carried into the underground cavity 5 formed thereby, and the boom 11 supports and suspends the upper end of the leader 15.

When the cutter 20 is rotated about a horizontal axis, depending on the object of the file, when the cutter support arm 21A shown in FIGS. 2 and 3 is rotated about a vertical axis, The cutter support arm 21B shown in FIGS.

Next, the working machine 10 is brought close to the soil pile 3 and the foundation pile 4 exposed in the hollow portion 5, the cutter 20 is positioned on the surface of the pile, and the motor 30 of the cutter 20 is driven to move the cutter body 34 to the cutter body 34. The concrete is rotated and the concrete is removed by the chips 39, 39,. At this time, the Y-axis control cylinder 50 or the X-axis control cylinder 55 of the cutter position control device is operated to control the cut, and only the concrete layer is peeled off.

The vertical position of the cutter 20 is determined by raising and lowering the cutter support arm 21A or 21B vertically along the reader 15 by an elevating device provided on the reader 15 so that a desired height position can be set over a desired range. I can do it.

In the above-mentioned razor, when constructing an underground structure under the upper structure while leaving the upper structure as it is, it is necessary to cast new surface concrete in order to use the foundation pile 4 as a pillar. For this reason, it is necessary to cut the surface of the portion indicated by oblique lines indicating the cross section in FIG.
Since the steel pipe 6 as the core material is not always inserted at the center of the pile, part of the steel pipe 6 is destroyed in advance and checked, and the result is numerically controlled to operate the cylinder by numerical control based on the data. Is carried out.

In the case of constructing an underground structure, it is necessary to construct the retaining wall 3. However, as shown in FIG. When the "raising" or "cutting beam" is erected, the portion shown by diagonal lines in FIG. 13 must be wall-cut, or as shown in FIG. There is a case where the flange surface of the H-shaped steel 7 is exposed by shaving the portion. Also in these cases, the amount of cut is controlled by numerical control so as not to cut too much. In this case, the cutting is performed with the axis of the cutter 20 being horizontal (horizontal position). Therefore, the cutter supporting arm 21A is used.

[0033]

As described above, according to the present invention, when a new building is constructed under the existing building, the concrete on the surface of the foundation pile or the retaining pile buried under the ground is manually manipulated. High efficiency can be achieved without any intervention, and the construction period can be significantly reduced. Further, since the position of the cutter is accurately controlled by the control device, the cutter is not excessively cut and does not damage the core material.

In addition, by providing two types of cutter supporting arms for supporting the self-rotating cutter in a vertical position and a horizontal position, an optimum setting can be performed according to a target pile, and further work can be performed. Efficiency can be improved.

Further, by providing the cutter in which the driving device is included in the cutter body as described in claim 3, since the drive system and the rotation transmitting mechanism do not appear outside, there is no such thing as supporting the work. In addition, there is no possibility that the drive system is contaminated to cause malfunction.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a filer according to the present invention.

FIG. 2 is a plan view in which a half of a cutter supporting arm in FIG. 1 is sectioned;

FIG. 3 is a side view of the same.

FIG. 4 is a plan view showing another cutter supporting arm.

FIG. 5 is a side view of the same.

FIG. 6 is an enlarged sectional view taken along line AA of FIG. 5;

FIG. 7 is a diagram corresponding to FIG. 1 when the cutter supporting arm of FIG. 4 is used.

FIG. 8 is a plan view of the same.

FIG. 9 is a sectional view showing the internal structure of the cutter.

FIG. 10 is a front view in which a half of the cutter body in FIG. 9 is sectioned;

FIG. 11 is a side view showing the left half of FIG. 10;

FIG. 12 is a sectional view of a foundation pile.

FIG. 13 is a sectional view of a retaining wall formed by retaining piles.

FIG. 14 is a sectional view of the same.

FIG. 15 is an explanatory view showing an example of an object using the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Existing structure 3 Earth retaining pile 4 Foundation pile 6 Steel pipe 7 H-shaped steel 10 Work machine 11 Boom 15 Reader 20 Cutter 21A, 21B Cutter support arm 22 Base 28 Mounting board 29 Support member 30 Motor 32 Drive shaft 34 Cutter body 35 Top plate 39 chip 40 mounting shaft 43 sliding surface 46 sliding plate 48 slider 49 guide groove 50 Y-axis control cylinder 52 sliding surface 53, 54 rail 55 X-axis control cylinder

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takao Yokohata 5-4-118-302, Yashio 5-chome, Shinagawa-ku, Tokyo (56) References JP-A-4-93422 (JP, A) JP-A-6-41959 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 29/045 E02D 5/22 E21D 13/00

Claims (4)

(57) [Claims] 1. A work machine which can be carried into an underground excavation space of an existing structure, a boom supporting the upper end of the boom, and a leader being vertically suspended. A cutter support arm for rotatably supporting a cutter for lifting is mounted on the leader. The cutter support arm is provided with a lift device for raising and lowering the cutter support arm, and the cutter support arm is provided with a cutter rotation drive device and a cutter position control device for numerically controlling the position of the cutter. A razor machine. 2. The frayer according to claim 1, wherein the cutter supporting arm has a cutter rotatably supported about a horizontal axis. 3. The cutter according to claim 1, wherein the cutter supporting arm has a cutter rotatably supported about a vertical axis. 4. The cutter according to claim 1, wherein a top plate portion of a cutter body having a cylindrical shape and having a plurality of chips on an outer peripheral surface is integrally rotated with a mounting tap that is rotated by a driving device fixedly mounted on the mounting substrate. The filing machine according to claim 1, wherein the mounting device is included in the cutter body.