JPH10279029A - Guide device for moving pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide device for moving a pipe which can move a main pipe smoothly by the traction of a wire even at a narrow place and use commonly for the piping work of the pipe with a different diameter. SOLUTION: A steel pipe body 1a is placed by four points contact at a symmetrical position on a pair of guide mechanism 21a, 21b consisting of ball bodies 22a, 22b and ball body receivers 23a, 23b. The ball body receivers 23a, 23b are pivoted to support members 25a, 25b by shafts 24a, 24b and swung in an arrow mark direction. In the ball body receivers 23a, 23b, pressing mechanism 26a, 26b, 26c, 26d for pressing the ball bodies 22a, 22b to the steel pipe body 1a are provided in respective vertical side and bottom side and even if the steel pipe body 1a is biased at the moving time, a restoring force is acted to the guide mechanism 21a, 21b and the steel pipe body 1 can be contacted at a normal position. As a interval adjust mechanism 28 is provided on the support members 25a, 25b and the interval can be adjusted properly, this device is used for plural piping works commonly and can move the steel pipe body 1a with a different pipe diameter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide device for moving a pipe.

[0002]

2. Description of the Related Art In recent years, pipes used for gas, water, and the like have become longer.

[0003] For this reason, pipes may be installed in narrow places where coexisting with other facilities or in places where installation widths are narrow, in bridge girders provided across rivers, in underground tunnels, or in other places. More.

[0004] In the above-mentioned plumbing work, for example, in a place where the installation width is narrow beside a road, part of the work is cut and covered with a lining plate.
Construction will be carried out with minimum traffic obstruction.

FIG. 5 is a partially cut-away schematic plan view showing an example of piping of a steel pipe in a place where the installation width is narrow.
5 is a schematic side view of FIG. 5, and FIG. 7 is a sectional view taken along line AA of FIG.

In FIGS. 5 and 6, a trench S is excavated in a narrow place S on the side of a road, and a work groove 2 is provided, and a meeting place 3 is provided therein. The steel pipe 1a carried into the working groove 2
Is placed on the drum roller 4. Further, the main pipe 1 formed by connecting the preceding steel pipe body to the hourglass roller 4 of the cut groove 6 covered with the lining plate 5 is placed.

When the rear end of the main pipe 1 and the steel pipe body 1a are welded at the meeting place 3, the main pipe 1 is pulled by a winch on a wire (not shown) provided at the front end thereof, and is entirely moved in the direction of the arrow.

In FIG. 7, the drum-shaped roller 4 has a support member 7.
The shafts are supported by bearings 8a and 8b provided at the tips of a and 7b. The main tube 1 is placed on the drum roller 4 in surface contact. When the main tube 1 is pulled by the wire, the hourglass roller 4 rotates to move the main tube 1. Reference numeral 9 is a base. The main pipe 1 is moved to a predetermined position of the cut groove 6,
When the traction of the main pipe 1 is completed, the hourglass roller 4 and its auxiliary equipment are removed, and the main pipe 1 is fixed at that position by a support (not shown) (prior art 1).

The above-mentioned construction method by pulling a wire or the like can easily perform piping even in a place where the installation width is narrow, but when the main pipe 1 is installed in a long distance, the drum-shaped roller 4 and its auxiliary equipment can be installed. The number also increases. For this purpose, it is conceivable to use the hourglass roller repeatedly.

However, when a plurality of plumbing works are performed, the pipe diameter of the main pipe 1 is often different, and in general, a large number of drum-shaped rollers 4 used in one plumbing work are used as they are for other plumbing works. Can not do it.

On the other hand, Japanese Utility Model Application Laid-Open No. 56-165708
Japanese Patent Application Laid-Open Publication No. H11-163,086 discloses a roller for moving a pipe which can be immediately adapted to steel pipe bodies having various pipe diameters (prior art 2).

FIG. 8 is a front view showing an example of the tube moving roller. In FIG. 8, the pipe moving roller is a steel pipe body 1.
The pair of rollers 10a and 10b are pivoted symmetrically inwardly inward so as to place a. For this purpose, the shaft members 11a, 11b of the rollers 10a, 10b are supported by roller receivers 12a, 12b mounted on the upper ends of the jack shafts 13a, 13b inclined inward. The jack shafts 13a, 13b are moved up and down in the jack cylinders 14a, 14b by jack handles 15a, 15b, whereby the rollers 10a, 10b are moved up and down diagonally. Reference numerals 16a and 16b are columns.

If the pipe diameter of the steel pipe body 1a is different, the jack shaft 1 of the jack cylinders 14a, 14b
3a and 13b are moved up and down by jack handles 15a and 15b, and the distance adjusting mechanism 17 is operated to move both rollers 10a and 13b.
The distance between a and 10b can be adjusted to respond immediately.

[0014]

However, in the prior art 1, as described above, since the drum-shaped roll 4 which matches the diameter of one main pipe 1 is used, the pipe diameter of the main pipe 1 is reduced. In the case of different piping work, the drum-shaped roll 4 cannot be applied as it is. Therefore, it is necessary to prepare a large number of drum-shaped rollers 4 and associated equipment for each pipe diameter, which is a problem in terms of cost, and storage and management of the drum-shaped rollers 4 and associated equipment are complicated.

On the other hand, the pipe moving roller according to the prior art 2 can also be used for piping work in which the pipe diameter of the steel pipe body 1a is different, and a certain effect is expected, but the steel pipe body 1a is pulled while being pulled by a wire. When applied to piping work in a narrow place such as moving and piping, there are the following problems.

As shown in FIG. 8, a pair of rollers 10a, 10b and a placed steel pipe 1a are in two-point contact with each other. However, when the steel pipe body 1a is pulled and moved by the wire, the steel pipe body 1a sways, and as the steel pipe bodies 1a are sequentially connected to form a long main pipe, a plurality of arranged rollers 10a and 10b are disposed. May not be able to make two-point contact. If at least one of the pair of rollers 10a and 10b having insufficient contact occurs, the main pipe is biased, and it becomes difficult to smoothly move the main pipe.

The present invention has been made to solve such a problem, and can smoothly move the main pipe even in a narrow place where the main pipe is moved while being pulled by a wire or the like, and pipes having different pipe diameters. An object of the present invention is to provide a pipe moving guide device that can be used for construction.

[0018]

According to the present invention, there is provided a pair of guide mechanisms each comprising a plurality of spheres arranged in an inwardly inclined direction for placing a main pipe at a symmetrical position, and a pair of guide mechanisms which pivotally support the guide mechanisms. A pipe moving guide device including a pair of support members provided with a pressing mechanism for pressing a guide mechanism against a pipe, and an interval adjusting mechanism for adjusting an interval between the support members.

In the present invention, the reason why a pair of guide mechanisms composed of a plurality of spheres for mounting the main pipe at symmetric positions is provided is as follows.
This is because a plurality of spheres located at symmetrical positions can be moved stably at a plurality of point contacts, and even if the pipe diameters are different, the ball can be similarly stably moved.

When the steel pipe is placed on one side in one-point contact, it becomes unstable and it is difficult to move the steel pipe smoothly.

According to the present invention, the target main pipe can be stably moved on both sides of the pair of guide mechanisms by always being placed on the sphere at a plurality of points of contact.

That is, when a plurality of the pipe moving guide devices of the present invention are employed in plumbing work in a narrow space, and the main pipe is pulled and moved by a wire, each pair of guide mechanisms always has a plurality of spherical bodies. To contact the main pipe at multiple points. In this case, since the guide device is provided with a mechanism for pressing against the main pipe, a restoring force is generated for the guide mechanism to rotate in contact with the main pipe at a normal position.

On the other hand, in the case where the pipe moving guide device of the present invention is also used for one pipe work to another pipe work, when the pipe diameter of the main pipe is different, the interval between the support members is adjusted by the interval adjusting mechanism. Then, it is applied to the diameter of the main pipe.

Therefore, according to the present invention, even when the main pipe having a different pipe diameter is used for piping work, the main pipe can be moved smoothly by contacting at a plurality of points.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an embodiment of the present invention. In FIG. 1, reference numeral 30 denotes a pipe moving guide device, and reference numerals 21a and 21b denote a pair of guide mechanisms each composed of two spheres 22a and 22b.
It is placed in point contact. The spheres 22a and 22b are arranged in a direction inclined inward on the sphere receivers 23a and 23b, and are rotatably supported. The portions of the spheres 21a and 21b protruding from the sphere receivers 23a and 23b make four-point contact with the steel tube 1a. Although the case of four-point contact is shown in FIG. 1, the number of spheres can be increased as necessary to make contact at a plurality of points such as three points or four points per side.

It is assumed that the spheres 22a and 22b have ordinary use conditions such as having a strength necessary for moving a main pipe formed by connecting the steel pipe bodies 1a. The pipe moving guide device is also used for the plumbing work, and the spheres 22a and 22b can be contacted at two or more points at symmetrical positions in any case within the range of the target main pipe diameter. It is necessary to select the shape and size of

The ball receivers 23a and 23b are shafts 24a and 24b
Thus, it is pivotally supported by the support members 25a and 25b, and can swing in the direction of the arrow.

The sphere receivers 23a and 23b are right-angled triangular boxes provided with openings on the oblique sides from which the sphere receivers 22a and 22b protrude, and a pedestal (not shown) on which the spheres 22a and 22b can be freely rotated. I have.

The sphere receivers 23a, 23b are provided with pressing mechanisms 26a, 26b, 26c, 26d for pressing the spheres 22a, 22b against the steel tube 1a on the vertical side and the bottom side, respectively.

The pressing mechanisms 26a, 26b, 26c, 26
As d, a spring mechanism is usually employed.

The pressing mechanisms 26a, 26b, 26c,
Due to 26d, even if the steel pipe body 1a is deviated during the movement,
A restoring force acts on the guide mechanisms 21a and 21b, and the steel pipe 1
Can be contacted at a normal position.

The support members 25a and 25b are fixed to the erection base 27. The support members 25a and 25b are provided with an interval adjusting mechanism 28 for adjusting the interval between them.

In the above, the support members 25a and 25b can be directly fixed to the pipe base.

A screw screw or the like is used as the interval adjusting mechanism 28, and one of the support members 25b can be easily moved to the support member 25a side by the handle 28a. In this case, a groove (not shown) is provided in the erection base 27 to guide the movement of the support member 25b.

If necessary, support members 25a, 25b
Can be moved to adjust the interval.

The distance adjusting mechanism 28 allows the support member 25
Since the interval between a and 25b can be appropriately adjusted, the steel pipe 1a having a different pipe diameter can be moved while being used for a plurality of plumbing works.

According to the present invention, even if the target main pipe is a steel pipe body 1a having a different pipe diameter, the main pipe is always mounted on the sphere at a plurality of points in contact with both of the pair of guide mechanisms, and is stable. Can be moved.

FIG. 2 is a front view showing another embodiment of the present invention. The same parts as those in FIG.
The description is omitted.

In FIG. 2, reference numerals 21a and 21b denote a pair of guide mechanisms each composed of five spheres 22a, 22b, 22c, 22d and 22e, on which the steel pipe 1a is placed in 10-point contact. The spherical receivers 23a and 23b are right-angled triangular boxes with two corners cut off, and the spherical bodies 22a to 22e are spherical receivers 23a,
The base protrudes from an opening provided on the hypotenuse side of 23b, and a pedestal (not shown) is provided inside which the spheres 22a to 22e can freely rotate while contacting with each other. Here, the hypotenuse side is curved so that the spheres 22 to 22e can easily contact the main pipe.

In the present invention, when the main pipe formed from the steel pipe body 1a moves, the spherical body 22 is formed by both of the pair of guide mechanisms.
Two or more of a, 24b, 22c, 22d, and 22e make point contact with the main pipe.

Although not shown in FIGS. 1 and 2,
By providing a screw jack or the like between the support members 25a, 25b and the erection base 7 and adjusting the position in the vertical direction, the diameter range of the target main pipe 1 can be further expanded.

When the pipe moving roller device of the present invention is disassembled, the main pipe formed by connecting the steel pipe body 1 is fixed at a predetermined position with a fixture (not shown), and then the guide is operated by operating the interval adjusting mechanism 28. The mechanisms 21a and 21b are separated from the main pipe. Next, since the guide mechanism 21a-related parts and the guide mechanism 21b-related parts can be separated by removing the gap adjusting mechanism 28, they are removed as a unit from the erection base 27, and finally the erection base 27 is removed.

When the pipe moving guide device of the present invention is used for plumbing work, it can be easily installed by reversing the above procedure.

FIG. 3 is a schematic side view of a pipe moving guide device according to the present invention applied to a case where gas pipes are installed in a bridge girder.
FIG. 4 is a perspective view showing the main part.

In FIG. 3 and FIG.
A plurality of pipe moving guide devices 30 of the present invention are previously installed at equal intervals at a position where a gas pipe is to be piped at a. Bridge 29
On one side, a work place 2a is provided as a place where a working groove 2a is cut and welded therein. In addition, bridge 29
On the other side, a working groove 2b is dug, and a winch 33 for pulling the main pipe 1 by a wire 32 is installed therein.

Here, the steel pipe 1 is conveyed, and the steel pipe 1a is welded by the welding machine 31 to form the main pipe 1 and is sequentially moved. The moving method is such that one end of the wire 32 is attached to the tip of the main pipe 1, the other end is attached to the winch 33, and the main pipe 1 is pulled by driving the winch 33. The distal end of the main pipe 1 is tapered so that it can be easily mounted on each pipe moving guide device 30.

The main pipe 1 placed on each pipe moving guide device 30 is in constant contact with the guide mechanisms 21a and 21b on both sides at a plurality of points, and is always restored to a normal state by the pressing mechanisms 26a to 26d. As a result, it is possible to move smoothly.

When the main pipe 1 is moved to a predetermined position and fixed by a predetermined fixing tool and a predetermined plumbing work is completed,
The pipe moving guide device 30 is dismantled.

In the present invention, since the pipe moving guide device 30 is assembled using a detachable mechanism such as a bolt and nut (not shown), disassembly is easy.

Further, the pipe moving guide device 30 of the present invention, which has been used in one plumbing work, is used as it is for other plumbing works in which the pipe diameter of the main pipe 1 is within a predetermined range.
Only the adjustment between 25b can be used.

[0051]

As described above, according to the pipe moving guide device of the present invention, the main pipe can be moved smoothly even in a narrow place where the main pipe is moved while being pulled by a wire or the like, and the pipe diameter can be reduced. Can be used for different plumbing works.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing another embodiment of the present invention.

FIG. 3 is a schematic side view of a case where the main pipe is moved using the erection roller transfer device of the present invention.

FIG. 4 is a perspective view showing a main part of FIG. 2;

FIG. 5 is a partially cutaway plan view showing an example of a conventional roller device used for moving a steel pipe body.

FIG. 6 is a side sectional view of FIG. 5;

FIG. 7 is a sectional view taken along line AA of FIG. 5;

FIG. 8 is a front view showing another example of the conventional tube moving roller device.

[Explanation of symbols]

 1 Main pipe 1a Steel pipe body 2, 2a, 2b Work groove 3, 3a Meeting place 21a, 21b Guide mechanism 22a, 22b, 22a, 22b Sphere 23a, 23b Sphere receiver 24a, 24b Shaft 25a, 25b Support member 26a, 26b, 26c, 26d Pressing mechanism 27 Erecting base 28 Spacing adjusting mechanism 28a Handle 29 Bridge 29a Girder 30 Guide device for pipe movement (this invention) 31 Welding machine 32 Wire 33 Winch

Claims (1)

[Claims] 1. A pair of guide mechanisms comprising a plurality of spheres arranged in an inwardly inclined direction for mounting a main pipe at a symmetrical position, and supporting the guide mechanisms to press the guide mechanisms against the main pipe. A pipe moving guide device comprising: a pair of support members having a pressing mechanism; and an interval adjusting mechanism for adjusting an interval between the support members.