JPH01262098A - Alignment device for piping end face - Google Patents

Abstract

PURPOSE:To enable a folding compactly and to improve the inserting property to a narrow part and workability by joining a 1st curved face plate and 2nd curved face plate so as to become a double hinge by a link piece. CONSTITUTION:Two frames 2, 3 are mutually folded with the pin 8 of the both ends of the link piece 4 linking two frames 2, 3 as the fulcrum by drawing a fastener 7 out of the support 5 of the frame 2. In case of this state being made, if there is an another pipe or wall, etc., on the circumference of a pipe 1a, for instance, it is necessary to insert from those gap, i.e., the narrow part, but in such case the inserting property and workability to the narrow part become better by folding compactly the whole body of a piping end face alignment device. This operation was enabled because the circular length of the frame per piece can be shortened by connecting the bisected frames 2, 3 by the link piece 4 having the specified length. This piping end alignment device is especially suitable for aligning at the narrow place of a site, etc.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for aligning end faces of pipes, and in particular, a collapsible end face of pipes suitable for alignment in narrow spaces such as on-site locations. The present invention relates to an alignment device.

[Conventional technology]

A known example of a conventional pipe end face positioning method and apparatus is Japanese Utility Model Application Publication No. 60-46985, the contents of which will be explained with reference to FIGS. 10 and 11.

FIG. 10 is a perspective view of this device, and FIG. 11 is a sectional view of the device shown in FIG. As shown in Fig. 10, a frame 2 is constructed by dividing the circumference into two and connecting them with a hinge 23.
0.21, and a frame 20.21 has a clamping piece 22 for the tube to be aligned at its end at one end in the axial direction, and the frame 20.21 connected by a hinge 23 processes one tube to be aligned at the end. It is pressurized and fixed with a pressure tool 24, and the clamping piece 22 at the other end of the frame 20°21 in the axial direction supports another tube for end face alignment.With this operation, the end of the tube for end face alignment is fixed. It is an attempt to align the position.

[Problem to be solved by the invention]

In the above-mentioned prior art, the diameter of the assembled device is approximately the same as the diameter of the curvature of the constituent frame, and when setting the tube to be aligned at the end, two
The split frame 20.21 is opened, the height of which is at least approximately 1.5 times the diameter of the curvature of the frame 20.21. For this reason, when carrying out on-site work, there are many size and shape restrictions when transporting this device to a work target area with many narrow spaces, or when setting this device on a pipe to be aligned at the end face at the work site. It is often difficult to use it freely.

An object of the present invention is to provide a pipe end face alignment device that can be easily transported to such a narrow space and easily attached to a target pipe.

[Means to solve the problem]

The above problem is that the first curved plate and the second curved plate are both cylindrical curved plates whose cross section is a part of a circle and is less than half the length of the circle;
One side of the first curved plate in the axial direction is pin-bonded to the first curved plate and the second curved plate at a predetermined interval in the radial direction of the circle using respective pins provided at both ends in the axial direction. and a fastener that tightens the opposite sides of each side so as to approach each other, or further, the first
At least two pieces on the inner surface of the first curved plate and an inner surface of the second curved plate, respectively, in the vicinity of the first cross section and the second cross section of the connecting body composed of the curved plate, the second curved plate, and the connecting piece. This problem is solved by a pipe end face positioning device comprising at least one pipe support provided in the pipe support body.

[Effect]

With the above configuration, the first curved plate and the second curved plate are pin-joined with the pins provided at both ends of the connecting piece, so the first curved plate, the connecting piece, and the second curved plate form a double hinge body. It can be transported in a thinly folded state as shown in Figure 3, and the fourth
As shown in the diagram, it can be set without opening it too far.

〔Example〕

Hereinafter, the present invention will be explained in detail based on the drawings.

1 and 2 are diagrams showing an embodiment of the pipe end face positioning device of the present invention, with FIG. 1 being a front view and FIG. 2 being a longitudinal sectional view.

This pipe end face alignment device is configured as follows. That is, in FIG. 1, a two-part frame 2 and a frame 3, which are manufactured along the outer periphery of a pipe 1, are connected at one end with a connecting piece having a predetermined length. Connecting piece 4 connects frame 2 and frame 3 with pin 8.
These two pins 8 are used as fulcrums to allow the fly 1, 2, 3 and the connecting piece 4 to bend at a predetermined angle relative to each other.

On the other hand, supports I to 5 and supports 6 are connected by pins 9 to the ends of the frames 2 and 3 opposite to the end where the connecting piece 4 is connected, respectively, in the same way as the connecting piece 4 is connected. It is. Frame tz using this pin 9 as a fulcrum
2 and frame 3, support 5 and frame tz 3, support 5 and support 6 are:
Each support can be bent at a predetermined angle.
-5 and supports I and 6 are structured so that they can be connected by a fastener 7 having a threaded portion. That is, by screwing the fastener 7 into the support 5 via the supports 1 to 6, the frames 2 and 3 are drawn toward each other, and a force for gripping the tube 1 is obtained.

Next, a piping support body]-0 for supporting a total of three pipes 1, one on the inner peripheral surface of the frame 2 and two on the inner peripheral surface of the frame 3, is provided. The piping supports 10 have a predetermined amount of protrusion from the inner circumferential surfaces of the frames 2 and 3, respectively, and are arranged in two arrays in the axial direction of the frames 2 and 3, as shown in FIG. By the way, although three piping supports 10 are provided on one circumference formed by the frames 2 and 3, four or more may be provided. However, when supporting a cylindrical object, supporting it at three points is better than supporting it at four or more points because it provides better stability and a more reliable gripping force.
As in this embodiment, it is common to support at three points around the same circumference. Further, although the three piping supports 10 are arranged at equal angles as shown in FIG. 1, they do not necessarily have to be equal angles. Now, piping support 1
0 has a structure in which the two frames 2 and 3 are arranged in two axial directions as described above, and the two pipe supports 10 grip the two pipes 1a and lb as shown in FIG. It has become. The above is the basic configuration of the pipe end face alignment device of this embodiment.

Next, a method of operating this device will be explained using FIGS. 2 to 4. FIG. 3 shows the state before the pipe end face alignment device is attached to the target pipe 1a to be gripped.

That is, the fastener 7 is removed from the support 5 of the frame 112, and the connecting piece 4 that connects the two frames 2 and 3 is removed.
The two frames 2 and 3 are folded together using pins 8 at both ends as fulcrums. In this state, for example, the tube 1a
- If there are other pipes or walls nearby, it is necessary to insert the pipe through the gap between them, that is, a narrow part. and workability are improved. This compact foldable structure was achieved because the arc length of each frame could be shortened by connecting the two divided frames 2 and 3 with a connecting piece 4 having a predetermined length. As explained in the prior art example, this is an operation that cannot be achieved with the conventional two-split frame structure with only one fulcrum point.

Next, with the tube 1 folded into the desired tube 1,
a, as shown in FIG. 4, the two frames 2 and 3 are opened from each other using the connecting piece 4 as a fulcrum, and attached so as to wrap around the pipe 1a, and the fastener 7 is attached to the support 1- of the frame 2. 5 to connect the two frames in a ring shape. Next, as shown in FIG. and 1b. Note that if there is no obstacle in the axial direction of the tube 1a,
It is also possible to screw the fastener 7 into the support 1 5 in advance, connect the frame zs2.3 in a ring shape, and then insert the pipe end face alignment device from the axial direction of the pipe 21.

The operating method of the pipe end face alignment apparatus of this embodiment has been described above, and next, an application example will be described using FIGS. 5 to 9. FIG. 5 shows an example in which one of the three pipe supports 10 in one array is replaced with a bolt 11, and the force for gripping the pipe is not only generated by the fastener 7 but also by the thread effect of the bolt 11. Pressing is also achieved by force, and a more reliable gripping force can be obtained.

FIG. 6 shows an example in which all the pipe supports are replaced with bolts 11, so that variations in pipe diameter due to manufacturing tolerances of the pipes can be accommodated. Figure 7 shows Pol 1~]]
By providing a sphere with a partially rounded surface at the tip thereof, it is possible to cope with the inclination of the outer wall of the tube to be gripped. FIG. 8 shows an example in which a rotary ball 13 is provided at the tip of the bolt 11, which allows the tube to be moved slightly in the axial direction after the tube is gripped. Figure 9 shows a roller 14 equipped with a rotary roller 14 at the tip of the pole 11. For example, if the pipe being gripped is a curved pipe, the bending direction of the curved pipe can be finely adjusted while the pipe is being gripped. It is something.

〔Effect of the invention〕

According to the present invention, since the first curved plate and the second curved plate are joined by the connecting piece to form a double hinge, they can be folded into a single shape, and the pipe to be aligned with the end face of the pipe can be moved to the cellar 1. Since there is no need to widen the piping end face greatly when carrying out .

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a front view showing one embodiment of the present invention.
The vertical sectional views in the figure, FIGS. 3 and 4 are front views showing the operation of the device shown in FIG. 1, and FIGS. 5 to 9 show modifications of the piping support of the device shown in FIG. 1. 10 and 11 are diagrams showing conventional examples. 1, 1 a, 1 b - pipe, 2, 3 - frame, 4 - connecting piece, 5, 6 support, 7 - fastener,
8,9・Pin, 10・Support body.

Claims (1)

[Claims] 1. A first curved plate and a second curved plate, both of which are cylindrical curved plates whose cross section is a part of a circle and whose circumference is less than half of the circumference of the circle; A connection in which one side of each of the two curved plates in the axial direction is pin-joined with pins provided at both ends in the axial direction to connect the first curved plate and the second curved plate at a predetermined interval in the radial direction of the circular shape. A pipe end face positioning device comprising: a piece; and a fastener that tightens opposing sides of each of the sides so as to approach each other. 2. A first curved plate and a second curved plate, both of which are cylindrical curved plates that are part of a circular cross section and have a circumference of more than half of the circumference of the circle, and the axial direction of the first curved plate and the second curved plate. a connecting piece for connecting the first curved plate and the second curved plate at a predetermined interval in the radial direction of the circular shape with respective pins provided at both ends in the axial direction; a fastener that tightens opposite sides of one side so as to approach each other;
At least two pieces on the inner surface of the first curved plate and an inner surface of the second curved plate, respectively, in the vicinity of the first cross section and the second cross section of the connecting body composed of the curved plate, the second curved plate, and the connecting piece. 1. A pipe end face positioning device comprising at least one pipe support provided in the pipe support body. 3. The pipe end face alignment device according to claim 2, wherein the pipe support expands and contracts in the radial direction of the circular shape. 4. The pipe support according to claim 2 or 3, wherein the circular center side end portion is a low sliding friction member and the angle of the surface in contact with the pipe can be freely changed. Piping end face alignment device. 5. The pipe end face positioning device according to any one of claims 2 to 4, wherein the pipe support has a rotatable end on the circular center side.