JPS6124582Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a support device for a disk cutter for cutting columnar structures.

Conventionally, in order to remove the excess pile parts that protrude above the ground after a ready-made concrete pile is driven or buried in the ground, it is best to crush and cut it using a hydraulic pump type cylinder type concrete pile cutter. It was normal. Such a hydraulic pump type cylinder type concrete pile cutter is, for example, as described in Japanese Patent Publication No. 52-27441,
First, a tightening band was wrapped around the pile, a pile back pressing body and a hydraulic cylinder-type concrete pile cutter were supported on the band, and the pile was crushed and cut at several points around the pile circumference using hydraulic pressure. However, when such a hydraulic cutter is used, a significant impact noise is generated, causing noise pollution, and there is a danger that debris may be scattered around. Furthermore, it was necessary to change the direction of the piston rod of the pile cutter and reposition it each time several locations around the pile were crushed. moreover,
As a result of crushing several places on the pile circumference, many cracks and unevenness occur in the cut section, so after cutting, it is necessary to knock off the remaining debris with a hammer etc. and flatten it, especially when embedding reinforcing bars in the pile. In this case, it took time and effort to cut the reinforcing bars separately. In order to solve these problems, the present invention proposes the use of a disc cutter for cutting concrete piles. It would also be convenient if the disc cutter could be used to cut any other columnar structures, such as utility poles, trees, etc. However, in order to use this disc cutter, the rotating cutting surface of the disc must be strictly fixed on a fixed horizontal plane, otherwise the rotating disc cannot be operated safely and is extremely dangerous. In addition, unless the disc cutter can be pushed continuously and in any direction on the horizontal surface, the advantage of high-speed cutting inherent to the disc cutter cannot be exhibited.

Therefore, the purpose of the present invention is to provide a disk cutter that holds the disk cutter at a constant height and prevents the cut surface from moving when cutting columnar structures such as concrete piles using the disk cutter. An object of the present invention is to provide a support device for a cutter.

Another object of the present invention is to provide a cutter support device that allows the cutter to be continuously and freely pushed along the circumference of a pile at any given height when cutting a columnar structure with a disc cutter. It is to provide.

The above-mentioned objects and other objects of the present invention are to provide a tightening member that tightens the columnar structure to be cut, and a guide member that rotates along the tightening member and can detachably attach a disk cutter to the shaft. This is achieved by a disk cutter support device consisting of.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Fig. 1 is a diagram showing the state of use of the disk cutter support device according to this invention, Fig. 2B shows the disk cutter of the disk cutter support device according to this invention, Fig. 2A shows the tightening member and Fig. 2C 3 is a view showing each of the guide members, and FIG. 3 is a view showing a state in which a cutter holding portion provided at one end of the guide member and a connecting member provided at the other end are connected.

In FIG. 1, a tightening member 10 is tightened to a columnar structure 1, such as a concrete pile, a telephone pole, a tree, a clay pipe, etc., and a guide member 30 having a disk cutter 20 attached thereto is circumferentially attached to the outside thereof. There is.
The tightening member 10 and the guide member 30 are
The chain is engaged with sprockets 37 and 38 provided on the guide member 30, and when the disc cutter 20 is pushed, the guide member 30 can move in a circle along the tightening member 10. Note that another opening 42 provided in the holding portion is used when the disk cutter cuts the circumference of the columnar structure in the opposite direction to that described above. Here, the disk cutter 20 supported by the disk cutter support device according to this invention and used for cutting a columnar structure has one shaft 21 at the bottom, and the cutter holding portion of the guide member 30. It is a conventional disc cutter except that it can be rotatably inserted into an opening 41 provided in the cutter disc 22, the engine part 23,
A belt (not shown) for transmitting engine rotation to the rotating shaft of the cutter disk, handle 2
4, 24', etc. It is preferable that the cutter has one shaft 21 so that it can freely rotate around the shaft when cutting the columnar structure.

Next, a more detailed explanation will be given with reference to FIGS. 2 and 3. In FIG. 2A, the tightening member 10 has, for example, three chains 21, and flanges 12 are attached to both ends of the chains 11, respectively. The flange 12 has, for example, two grooves or openings, and when tightening the tightening member 10 to the columnar structure 1, it is fastened with bolts 13 and nuts 14 according to the length of the circumference of the columnar structure. It's summery. However, the tightening member 10 does not necessarily have to be a three-chain chain, and any number of chains and chains that mesh with the sprockets 37, 38 of the guide member 30 can also be used. Furthermore, the sprockets 37 and 38 (at least one sprocket) of the guide member 30 can be tightened to the columnar structure 1.
Other tightening means may be used as long as they mesh with the
For example, by providing a recess (not shown) around the tightening member,
The guide member 30 may be provided with a convex portion that is rotatable along the concave portion, and the concave and convex portions may be connected so as to be slidable along the circumference of the columnar structure 1. Furthermore, any other connecting means can be used to connect both ends of the chain.

In FIG. 2C, the guide member 30 is connected to the frame 3.
1. A roller 34 is provided between the disk cutter holding portion 32 and each frame 31 by a pin 33. The frame 31 is composed of a plurality of bent plate materials arranged in parallel, and has a plurality of pins 33 on which two guide rollers 34 are rotatably attached to each bent part, and the frame 31 is arranged in parallel. 31 has reinforcing ribs 36 for maintaining a constant spacing. Further, a disk cutter holding portion 32 is connected to one end of the frame 31.
Furthermore, as shown in FIG. 3, a connecting portion 35 is provided at the other end of the frame, so that a guide member 30 can be attached around the outside of the tightening member 10.
The frame 31 can be fixed to a columnar structure of any diameter and any shape.
It is pivoted by.

Openings 41 and 4 are provided in the upper and lower parts of the channel-shaped disc cutter holding portion 32 of the guide member 30, respectively.
2, and one shaft 21 at the bottom of the disc cutter can be inserted therein. cutter 1
The cutter 2 is attached to the cutter holding part 32 by the shaft of the book.
Since the cutter disk 22 is rotatably inserted, the cutter disk 22 can rotate arbitrarily around the axis when cutting the columnar structure. Two plates 43 and 44 are fixed to the upper and lower inner sides of the cutter holding portion, respectively, and two sprockets 37 and 38 are each pivotally attached via the plates 43 and 44. The sprockets 37, 38 engage with the chain of the clamping member or the recesses of the clamping member to enable the guide member 31 to move along the clamping member. Plate material 43,
44 and sprockets 37 and 38 as necessary,
Can be any number. Furthermore, a rotatable holding roller 40 is inserted into the tip of a rod 39 protruding from the lower part of the cutter holding part 32. This holding roller 40 and the roller 34 of the frame portion allow the shaft 2 of the disc cutter 20
1 into either of the openings 41, 42 of the holding part 32 to cut a columnar structure.If the cutter is pushed inward around the columnar structure, the guide member 30 will cut the outside of the tightening member 10. Can be moved smoothly.

As described above, according to the present invention, there is provided a disk cutter support device that can support the disk cutter not only around a concrete pile but also around any arbitrary position of any columnar structure, thereby making the cutting easy and smooth. be able to.

In order to carry out the present invention, the example of the device described and illustrated here includes a clamping member that tightens the columnar structure to be cut, and a disc cutter that rotates along the clamping member and can be detached from the disc cutter. It will be obvious to those skilled in the art that modifications may be made without departing from the scope of the disk cutter support device comprising a guide member pivotably mounted on the disk cutter support device.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the state of use of the disk cutter support device according to this invention, and Fig. 2 B, A, and C show each of the disk cutter, tightening member, and guide member of the disk cutter support device according to this invention. FIG. 3 is a perspective view showing a state in which a cutter holding portion provided at one end of the guide member and a connecting member provided at the other end are connected. Explanation of symbols, 1... Column structure, 10... Tightening member, 11... Chain, 20... Disc cutter, 21... Shaft, 30... Guide member, 31...
Frame, 32...Disk cutter holding part, 3
3...Pin, 34...Roller, 35...Connecting portion, 36...Reinforcement rib, 37, 38...Sprocket, 40...Roller.

Claims (1)

[Claims for Utility Model Registration] (1) A tightening member that tightens the columnar structure to be cut, and a guide member that rotates along the tightening member and allows a disc cutter to be removably attached to the shaft. A disk cutter support device consisting of. (2) The device according to claim 1, wherein the tightening member is a chain having connecting members for adjusting the length at both ends. (3) The guide member includes a sprocket that engages with the tightening member, an opening for holding the disc cutter, and a disc cutter holding portion that has a holding roller for holding and moving the disc cutter together with the guide member, and a disc cutter holding part that has a sprocket that engages with the tightening member, and a disc cutter holding portion that has a holding roller for holding and moving the disc cutter together with the guide member. The device according to claim 1 or 2, which includes a frame having guide rollers for holding and moving.