JP3235951U - Steel pipe horizontal cutting ruler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steel pipe horizontal cutting ruler which can be easily attached to a steel pipe and can improve the efficiency of a steel pipe cutting operation.
SOLUTION: A steel pipe horizontal cutting ruler 1 has a height of a steel pipe fixing portion 2 fixed along the outer periphery of a steel pipe 10, a cutting guide portion 3 provided above the steel pipe fixing portion 2, and a cutting guide portion 3. It is composed of a cutting guide adjusting unit 6 for adjusting up and down, and a level 7 provided on the cutting guide unit 3. The cutting guide adjusting portion 6 includes height adjusting bolts 4 provided at a plurality of positions of the steel pipe fixing portion 2 and fixing nuts 5 for fixing the height adjusting bolt 4, and the cutting guide portion 3 is a steel pipe fixing portion. The height can be adjusted up and down with 2 as the fulcrum. The position of the cutting guide portion 3 is fixed by using the height adjusting bolt 4 and the fixing nut 5 while checking with the level 7, and the upper portion of the cutting guide portion 3 is the cutting line L of the steel pipe 10 to which the cutting device 11 is attached. ..
[Selection diagram] Fig. 1

Description

The present invention relates to a steel pipe horizontal cutting ruler for indicating a cutting line when the upper part of a steel pipe is cut horizontally using a cutting device.

Conventionally, when cutting an unnecessary part of a steel pipe used for a pile or the like, for example, a gas burner or the like is used, and the worker often cuts it manually. At that time, a cutting line is marked on the steel pipe for cutting, but the cutting line may deviate from the cutting line, and the accuracy of the finished product may vary.

As a technique for cutting a pile head of a steel pipe pile, for example, there are inventions described in Patent Documents 1 to 3.

Patent Document 1 describes a steel pipe pile cutting guide ruler in which at least a pair of screw rods that can be screwed in the axial center direction of the steel pipe pile are screwed onto a fixed frame that is fixed to the outer periphery of the steel pipe pile to serve as a table. Are listed.

Patent Document 2 describes a guide jig that guides a torch head of a gas burner when cutting a pile head of a steel pipe pile. It is provided with a moving table on which the torch head is placed, a support moving mechanism for moving the moving table around the steel pipe pile while supporting the moving table, and a fixing mechanism for fixing the support moving mechanism to the steel pipe pile.

Patent Document 3 includes a ring main body (3) that can be fitted and attached to a pipe pile (2), and the upper peripheral portion (12) or lower peripheral portion (15) of the ring main body (3). Is characterized in that it is perpendicular to the axis of the pipe pile (2) in the state of being fitted and mounted on the pipe pile (2), and a copy guide (14) of the cutting tool (13) can be formed. A jig for cutting pipe piles is described.

Tomi No. 3175190 Gazette Japanese Unexamined Patent Publication No. 2005-279733 Japanese Patent Application Laid-Open No. 2003-321837

The steel pipe pile cutting guide ruler described in Patent Document 1 is formed in a donut shape and is used by inserting it from the upper part of the pile head of the steel pipe pile. There is nothing to check if it is mounted horizontally to the steel pipe pile, and there is no way to adjust the level.

The steel pipe pile cutting guide jig described in Patent Document 2 moves a moving table on which a torch head of a gas burner is placed along a rail, and a support moving mechanism for supporting the moving table and a steel pipe are separated from each other. Therefore, even if it is attached to a steel pipe, it may shift. In addition, there are many equipments, and it takes time and effort for workers to install them.

In the pipe pile cutting jig described in Patent Document 3, the upper peripheral portion or the lower peripheral portion of the ring body is set to be orthogonal to the axis of the pipe pile in the state of being fitted and mounted on the pipe pile. There is nothing to measure the level. In addition, since it is intended for pipe piles with a relatively small diameter and is fixed by one attachment / detachment operation unit and two retaining pieces, it is possible that the jig may shift when cutting.

The present invention aims to solve the above-mentioned problems, and provides a steel pipe horizontal cutting ruler that can be easily attached to a steel pipe and can improve work efficiency and finish when cutting the steel pipe. It is something to do.

The present invention is a steel pipe horizontal cutting ruler for indicating a cutting line when cutting a steel pipe horizontally, and the steel pipe horizontal cutting ruler is a steel pipe fixing portion fixed along the outer periphery of the steel pipe and the steel pipe. A cutting guide portion provided above the steel pipe fixing portion along the outer circumference, a cutting guide adjusting portion for adjusting the height of the cutting guide portion up and down, and a level provided on the cutting guide portion. The cutting guide adjusting portion is composed of a height adjusting bolt provided at one or a plurality of positions of the steel pipe fixing portion and a fixing nut for fixing the height adjusting bolt, and the cutting guide portion is composed of a fixing nut. The cutting guide portion is attached so that the height can be adjusted up and down with the steel pipe fixing portion as a fulcrum, and the cutting guide portion is adjusted according to the tightening condition of the height adjusting bolt and the fixing nut while checking the level of the cutting guide portion with the level. It is characterized in that the position of the steel pipe is determined so as to indicate the cutting line of the steel pipe.

By fixing the steel pipe fixing portion to the steel pipe, the steel pipe horizontal cutting ruler of the present invention can be fixed to the steel pipe. The steel pipe fixing portion should have a shape that can be fixed along the outer circumference of the steel pipe.

The cutting guide portion is provided above the steel pipe fixing portion, and the cutting guide portion also has a shape along the steel pipe. The line above the cutting guide is the cutting line for the steel pipe. Further, the cutting guide portion is provided with a level so that it can be confirmed whether or not the cutting guide portion is horizontal to the steel pipe.

The steel pipe fixing part is provided with a cutting guide adjusting part consisting of a height adjusting bolt and a fixing nut, and by adjusting the height adjusting bolt, the position of the cutting guide part provided above the steel pipe fixing part is adjusted. can do. Determine the position of the cutting guide while checking the level, and tighten the fixing nut to fix the position of the cutting line.

Further, it is preferable that a gap for adjusting the angle of the cutting guide portion is provided between the cutting guide portion and the outer circumference of the steel pipe. If there is a gap between the cutting guide portion and the outer circumference of the steel pipe, the angle can be adjusted by moving the cutting guide portion up and down with the steel pipe fixing portion as a fulcrum, and the position of the cutting guide portion can be determined.

As the steel pipe fixing portion, the existing steel pipe fixing band can be used as it is or after being processed. If the steel pipe fixing band previously used can be used as the steel pipe fixing portion of the steel pipe horizontal cutting ruler of the present invention, it is environmentally friendly. Further, the weight of the steel pipe horizontal cutting ruler is preferably such that a heavy machine is not used and the weight does not burden the worker.

The steel pipe horizontal cutting ruler of the present invention can be easily attached to the steel pipe. By cutting along the cutting guide portion of the steel pipe horizontal cutting ruler, it is possible to cut horizontally with high accuracy, and the efficiency of the cutting work can be improved.

It is a front view schematically showing one embodiment of the steel pipe horizontal cutting ruler of this invention, (a) is the state which the steel pipe horizontal cutting ruler is attached to the steel pipe, (b) is the cutting guide part according to the inclination of the steel pipe. Shows the adjusted state. 1A is a cross-sectional view schematically showing an embodiment of FIG. 1A, where FIG. 1A is a view from above and FIG. 1B is a view from below.

An embodiment of the steel pipe horizontal cutting ruler 1 of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1A shows a state in which the steel pipe horizontal cutting ruler 1 of the present invention is attached to the steel pipe 10, and FIG. 1B shows a state in which the steel pipe horizontal cutting ruler 1 is attached when the tilted steel pipe 10 is cut horizontally. It shows a state where the angle of the cutting guide portion 3 is adjusted. FIG. 2 shows, in the embodiment of FIG. 1 (a), FIG. 2 (a) is a cross-sectional view seen from above, and FIG. 2 (b) is a cross-sectional view seen from below.

The steel pipe fixing portion 2 has a shape in which a ring-shaped one along the outer circumference of the steel pipe 10 is divided into two. The steel pipe 10 is sandwiched from the side so that the steel pipe 10 becomes the center of the steel pipe fixing portion 2, and is fixed by fixing with bolts 2a and nuts 2b. The steel pipe fixing portion 2 is provided with a height adjusting bolt 4 and a fixing nut 5 for adjusting the vertical position of the cutting guide portion 3 from below.

A cutting guide portion 3 is provided on the steel pipe fixing portion 2. The cutting guide portion 3 has a ring shape larger than the steel pipe fixing portion 2 and has a shape divided into two in the same manner as the steel pipe fixing portion 2. The steel pipe 10 is sandwiched from the side so that the steel pipe 10 becomes the center of the cutting guide portion 3 and is fixed by fixing with bolts 3a and nuts 3b. Further, the cutting guide portion 3 is attached with the end portion of the steel pipe fixing portion 2 as a fulcrum, and the angle of the cutting guide portion 3 can be adjusted by moving the side opposite to the fulcrum of the cutting guide portion 3.

In order to determine the position by moving the cutting guide portion 3 so as to be horizontal, it is advisable to provide a gap between the steel pipe 10 and the cutting guide portion 3. The size of the gap is determined by the allowable vertical accuracy of the steel pipe to be cut.

The existing steel pipe fixing jig used for fixing the steel pipe may be used as the steel pipe fixing portion 2. Further, FIGS. 1 and 2 show an embodiment in which the height adjusting bolt 4 and the fixing nut 5 are provided at 6 places, but the cutting guide portion 3 can be supported from below, and the cutting device 11 is provided on the upper portion of the cutting guide portion 3. It is preferable that the number of steel pipe horizontal cutting rulers 1 does not shift when the steel pipe 10 is cut by applying the bolt.

Next, a method of using the steel pipe horizontal cutting ruler 1 of the present invention will be described.
(1) First, the nut 2b of the steel pipe fixing portion 2 and the nut 3b of the cutting guide portion 3 are removed so that the steel pipe fixing portion 2 and the cutting guide portion 3 are opened.

(2) The steel pipe 10 is sandwiched so as to be the center of the steel pipe fixing portion 2, and the bolt 2a and the nut 2b are tightened to fix the steel pipe fixing portion 2.

(3) Similar to the steel pipe fixing portion 2, the steel pipe 10 is sandwiched so as to be the center of the cutting guide portion 3, and the bolt 3a and the nut 3b are loosely tightened.

(4) While checking the level 7 provided on the cutting guide portion 3, tighten the height adjusting bolt 4 with the fixing nut 5 to adjust the inclination of the cutting guide portion 3 and position the cutting guide portion 3 to be horizontal. decide. For example, when adjusting the position of the cutting guide portion 3 with respect to the inclined steel pipe 10 as shown in FIG. 1 (b), the height adjusting bolt 4 located closest to the bolt 2a of the steel pipe fixing portion 2 By loosely tightening the height adjusting bolt 4 provided near the joint between the steel pipe fixing portion 2 and the cutting guide portion 3, the angle of the cutting guide portion 3 with respect to the steel pipe fixing portion 2 is adjusted, and the cutting guide portion is adjusted. The horizontal position of 3 can be determined.

(5) The bolt 3a and the nut 3b of the cutting guide portion 3 loosely tightened in (2) are further tightened to fix the cutting guide portion 3.

(6) The steel pipe 10 is cut while the cutting device 11 is attached to the upper side of the cutting guide portion 3.

1 ... Steel pipe horizontal cutting ruler 2 ... Steel pipe fixing part 2a ... Bolt 2b ... Nut 3 ... Cutting guide part 4 ... Height adjustment bolt 5 ... Fixing nut 6 ... Cutting guide adjustment part 7 ... Level 10 ... Steel pipe 11 ... Cutting device L … Cutting line

Claims (3)

A steel pipe horizontal cutting ruler for indicating a cutting line when cutting a steel pipe horizontally, the steel pipe horizontal cutting ruler has a steel pipe fixing portion fixed along the outer periphery of the steel pipe and a steel pipe fixing portion along the outer periphery of the steel pipe. It is composed of a cutting guide portion provided above the steel pipe fixing portion, a cutting guide adjusting portion for adjusting the height of the cutting guide portion up and down, and a level provided on the cutting guide portion. The cutting guide adjusting portion is composed of a height adjusting bolt provided at one or a plurality of positions of the steel pipe fixing portion and a fixing nut for fixing the height adjusting bolt, and the cutting guide portion is the steel pipe fixing portion. It is attached so that the height can be adjusted up and down with the above as a fulcrum, and the position of the cutting guide portion is determined by the tightening condition of the height adjusting bolt and the fixing nut while checking the level of the cutting guide portion with the level. A steel pipe horizontal cutting ruler, characterized in that the cutting line of the steel pipe is shown. The steel pipe horizontal cutting ruler according to claim 1, wherein a gap for adjusting the angle of the cutting guide portion is provided between the cutting guide portion and the outer circumference of the steel pipe. The steel pipe horizontal cutting ruler according to claim 1 or 2, wherein the steel pipe fixing portion uses an existing steel pipe fixing band.

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