JPH032788Y2 - - Google Patents

Description

[Detailed description of the invention] A. Field of industrial application The present invention is an attachment used to set pipe bodies such as fume pipes, duct tile pipes, etc. at predetermined heights and positions. The present invention relates to a positioning tool that has a simple and rational structure and allows for accurate, simple, and efficient pipe arrangement work.

B. Prior art Conventionally, when installing pipes in succession, the pipes were first suspended with wire ropes using a crane, and then loosely fitted into the sockets of the pipes that had already been installed. Next, place a spirit level horizontally on the inside of the opening end of the socket of the new pipe to be installed, suspend the weight from the center of the level, determine the center of the pipe, and use the weight to determine the center of the pipe. Match the installation center line drawn on the foundation concrete surface in advance.
Furthermore, set a box scale on the bottom of the pipe inside the opening end of the socket part of the pipe body, read the height with a level, and place a packing material between it and the foundation concrete to set the center of the pipe body at the specified height. and adjust the position. Check the accuracy of the position and height of the pipe once placed in this way, and if there is an error, repeat the above steps to correct it, and once the correction is completed, firmly fit it into the socket. . Even after it was fitted, the position and height were checked and adjusted again.

C. Problems that the invention aims to solve When determining the center of a pipe, two people are required: one to support the spirit level and one to keep the weight stationary. It is necessary to have someone to support it vertically. However, when using a spirit level or box measure, it is necessary to loosen the wire rope used to pull the pipe in the direction of connection, and to move the horizontal wood to the outside of the opening in order to hang the wire rope. . In addition, the position and height of the pipe are adjusted separately while suspended from an unstable wire rope, so if the height of the pipe is adjusted after it has been set accurately, the position will shift and the position will have to be repositioned. The work is not progressing at all, as the height will be off when the position is adjusted.

D. Means to solve the problem The present invention aims to reduce the number of personnel required for piping work and to adjust the center position of the pipe body without loosening the pulling wire rope or moving the wood on which the wire rope is hung. This system determines the position by checking the height at the same time, and its configuration consists of an inspection plate that can be fixed with the plate surface in close contact with the opening surface of the pipe body, and
Attach an arcuate scale consisting of an arcuate curve concentric with the outer periphery of the pipe body, attach a bubble tube along the arcuate curve, and place the bubble tube at an appropriate location on a reference line passing through the center of the arcuate curve, perpendicular to the plate surface. A hanging shaft that can hang a plumb bob protrudes from its tip, and furthermore,
A position correction scale is displayed on the arcuate curve near the bubble tube.

E. Function: Fix the inspection plate so that the reference line is vertical with the inspection plate in close contact with the opening surface of the tube so that the outer circumference of the tube and the arcuate scale are concentric circles, and hang the plumb bob from the tip of the hanging shaft. If this is done, the tip of the vertically suspended plumb bob will be directly below the center of the tube, and alignment can be achieved by aligning the center line of the installation there. The center height of the tube can also be confirmed by reading the arcuate scale directly above the bubble using the level's crosshairs. Furthermore, since the height scale is arc-shaped, even if the plumb line and the reference line do not match, the height can be read at the apex of the arc line, and the correction scale display allows you to read the height at the center position. Errors can be easily corrected. Moreover, since the plumb bob is suspended from the tip of a hanging shaft attached perpendicular to the board surface, there is no need to loosen the wire rope for pulling or move the wood on which the wire rope is hung.

F. Example In FIG. 1, which shows a positioning tool which is an example of the present invention in an exploded state, 1 is an inspection plate, 2 is a
3 is a stopper, 3 is an eccentric roller, and 4 is a hanging shaft. The inspection plate 1 is made of metal and has a base paper shape with concentric arc curves on both the upper and lower sides (the shape of paper pasted on a fan).
On the surface, arcuate scales 5 consisting of a group of arcuate curves 5a, 5b, 5c, 5d, concentric with the upper and lower sides of the test plate, are arranged in the shape of a tree ring.
A reference line 6 passing through the center of the arc curve is drawn at the center. In addition, there are stoppers 2 on both sides of the back surface of the inspection plate 1.
Mounting holes 7a, . . . , 7b, . Fix it and
The eccentric roller 3 is rotatably attached to the rotary shaft of the handle 3a through the circular-shaped attachment hole 7b below it. A hanging shaft 4 is attached to the center of the lower end of the inspection board 1 in a state perpendicular to the board surface, and a plumb bob 8 can be suspended from the tip thereof. Also, the arcuate curve 5 just above the hanging shaft 4
An arc-shaped bubble tube 10 is attached to the depression along the line a. Furthermore, in a state where the reference line 6 and the vertical line do not match, there is a straight line 1 parallel to the vertical line that intersects the reference line 6 at the protruding point of the hanging shaft 4.
4 intersects with the circular arc curve 5b closest to the bubble tube 10, a scale display 11 for position correction corresponding to the distance between these two straight lines is made.

As shown in the second figure, hold the handle 3a with both hands, apply the stopper 2 of the clamp member to the outer peripheral surface of the socket portion of the tube M, and place the eccentric roller 3 on the inner peripheral edge of the positioning tool formed as described above. and rotate the handle 3a, the eccentric roller 3
The distance between the two eccentric lengths is reduced, and the socket part of the tube body can be sandwiched between the stopper and the eccentric roller and tightened. Thereby, the inspection plate is fixed with the plate surface in close contact with the opening surface of the tube body. The outer circumferential surface of the eccentric roller is slightly tapered to correspond to the inner circumferential surface of the tubular body, so that the perpendicularity between the longitudinal central axis of the tubular body M and the plate surface of the inspection plate 1 is ensured.

In this state, if the center line 9 of the plumb bob and the reference line 6 are on the same line, the plumb bob 8
The center can be positioned simply by aligning the tip of the cable with the installation center line 12. Furthermore, by reading the numerical value on the arcuate scale 5 that intersects the reference line 6 at the level, the center height of the tube M can be measured, so the height and position of the tube M can be inspected at the same time. Moreover, since the plumb bob 8 is suspended from the tip of the hanging shaft 4 attached perpendicular to the board surface, there is no need to loosen the wire rope for pulling or move the wood on which the wire rope is hung. do not have.

In actual work, it is rather rare for the reference line and the center line of the plumb bob to line up in a straight line, and there is a slight deviation between the reference line and the plumb bob. Therefore, in such a case, it is necessary to correct the deviation. In order to make a correction, it is sufficient to read the error, and an example thereof will be explained based on the fourth diagram. If the reference line 6 and the center line 9 of the plumb bob deviate from each other, the position of the bubble 13 of the bubble tube 10 moves to a position away from the reference line 6. Therefore, if we imagine a straight line 14 passing through the center of the bubble 13 that has moved and parallel to the center line 9 of the plumb bob (the real vertical line in that state), the distance between the center line 9 of the plumb bob and the imaginary straight line 14 is Matches the shift in center position. Therefore, if the distance between the straight lines is displayed at each intersection point of the plurality of virtual straight lines 14 (only one line is shown in the drawing) and the circular arc curve 5b, the scale of the bubble position can be displayed. The center of the tubular body and the installation center line 12 can be made to coincide by reading the reading, moving the position of the plumb bob from the installation center line 12 by the reading and stopping it.

The inspection plate 1 of this embodiment has a position correction scale display 11 on the arcuate curve 5b closest to the bubble tube 10.
, the bubble position can be easily read directly.

Although the positioning tool of this embodiment is designed to be able to move the mounting position of the clamp member so that it can be used for pipes of multiple diameters, it may be used exclusively for a specific diameter, or it may be used for inspection as shown in Figure 5. It is also possible to extend the sides of the plate 1 obliquely upward and attach a clamp to the extending portion 15 so that the plate 1 can be used for arranging a large diameter pipe.

In the case of a positioning tool for large diameters, rather than increasing the size of the inspection plate, it is better to extend the sides as described above so that the inspection plate is located near the center of the pipe.
Easy to use considering the height setting of the level. Also, the spacing and display means of the arcuate scales attached to the plate surface,
It is preferable that the design of the inspection plate is designed to be easy to see depending on the pipe diameter. Furthermore, the material of the inspection plate, the mechanism of the clamp member, etc. may be changed arbitrarily, such as by making the inspection plate made of synthetic resin to reduce its weight, or by using a screw-fastening type of clamp member.

Positioning work is done by using a crane to suspend the pipe body M with wire rope 16 etc., as in the past.
A piece of wood 17 is hung horizontally over the socket of the piece, and the wire rope 18 is stretched from the opposite side to tighten it, or a packing 20 is interposed between it and the foundation concrete 19 for adjustment.

In the above positioning work, errors caused by distortion of the tube itself can be eliminated by forming the stopper's mounting hole in an oval shape to allow fine adjustment of its mounting position, and by tightening the clamp member using an eccentric roller. By doing so, it is possible to keep the value to an almost negligible value.

G. Effect Since the positioning tool is closely fixed to the pipe surface during work, there is no need for people to support it during work. In addition, since the height is read on an arcuate scale, it can be read even if the tube rotates due to slack in the hanging wire rope.
Moreover, the position error can be easily corrected by detecting the error from the correction scale of the moved bubble position. Best of all, the height and position can be adjusted at the same time, eliminating the hassle of having to make adjustments over and over again.

As a result, it is possible to reduce the number of personnel required for piping work and shorten the working time, so the practical benefits are great.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the positioning tool according to the present invention, Fig. 2 is an explanatory diagram showing how to attach the assembled positioning tool to the pipe body, and Fig. 3 is an illustration of the positioning work using the positioning tool. FIG. 4 is a perspective view showing the state, FIG. 4 is an explanatory view of the correction scale, and FIG. 5 is a perspective view of a modified example. 1... Inspection plate, 2... Stopper, 2a... Wing nut, 3... Eccentric roller, 3a... Handle, 4
... Hanging shaft, 5 ... Arc-shaped scale, 5a, 5
b, 5c, 5d...Circular curve, 6...Reference line, 7
a, 7b...Mounting hole, 8...Plumb bob, 9...
...center line of plumb bob, 10... bubble tube, 11...
Position correction scale display, 12...Laying center line, 1
3...Bubble, 14...Virtual straight line, 15...Extended portion, 16...Wire rope, 17...Wood, 18
... wire rope, 19 ... foundation concrete,
20... Patsukin, M... tube body.

Claims (1)

[Claims for Utility Model Registration] 1. An inspection plate that can be fixed with the plate surface in close contact with the opening surface of the tube is provided with an arc-shaped scale consisting of an arc curve concentric with the outer periphery of the tube, and the arc curve At the same time, a vial is installed along the arc curve, and a hanging shaft is provided protruding from the tip of the hanging shaft perpendicular to the plate surface at an appropriate position on the reference line passing through the center of the circular arc curve, and furthermore, the above-mentioned A positioning tool for pipe arrangement work, characterized in that a position correction scale is displayed on an arcuate curve close to a bubble pipe. 2. The inspection plate is provided with a clamp member consisting of a stopper and an eccentric roller, each protruding in a direction perpendicular to the plate surface on the left and right back surfaces, and the rotation of the eccentric roller causes the outer circumferential surface of the roller to The pipe according to claim 1, which is fixed by changing the distance between the stopper and the end edge of the pipe between the stopper and the outer peripheral surface of the eccentric roller. Positioning tool for body placement work.