JPH08254285A - Burring method for lengthy piping and pipe hanging device used therefor - Google Patents

Abstract

PURPOSE: To support quickly, correctly, and in an abutting condition, both end surfaces of a pipe, in the burring method for a lengthy piping which is welded with an already buried piping by hanging down a burring piping on the bottom part of a groove for burring a piping, after a plurality of pipes are welded so as to form the burring piping. CONSTITUTION: A plurality of pipe hanging device K provided with an invented U-shaped supporting flame 1 is straddled on a groove U, and they are arranged in a longitudinal direction, pipes P1 are hung down in a supporting flame 1 by a chain block 2 which is movably supported to each supporting flame 1, the pipes P1 , P1 are arranged in series, the chain block 2 and a position regulating device 3 for regulating the position for supporting the chain block 2 in horizontal direction are operated, the hang-down positions and positions of the pipes P1 , P1 are regulated, both end surfaces of the P1 , P1 are brought in contact with each other, and then its pipe joining part is welded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for burying long pipes such as gas pipes and water pipes in the ground, and a pipe suspension device used for the method.

[0002]

2. Description of the Related Art The above-mentioned long pipe is arranged by arranging a plurality of pipes by welding at the bottom of a groove for burying pipes formed by excavation, and then backfilling this arrangement portion. Buried. However, in order to perform the welding in the groove, it is necessary to attach a welding machine to the welded portion of the pipe or to secure a working space for an operator to enter. Therefore, in this groove, the portion where the welded portion is located is located. You have to dig larger than the other parts. In addition, since the working space is limited even if the overdrilling is performed, the welding work is difficult.

For this reason, conventionally, a plurality of sleepers are laid over the groove, a plurality of pipes are placed on these sleepers, their ends are brought into contact with each other, and their joints are welded together. A method has been adopted in which the embeded pipe for embedding is temporarily lifted by a crane or the like to remove the sleepers, and then the pipe is lowered into the groove and welded to the existing pipe arranged at the bottom thereof. According to this method, the number of man-hours for welding work and over-digging work in the groove is significantly reduced, and the workability as a whole is improved. Further, in this method, since the pipe is placed on the groove, a space for placing the pipe is not required around the groove.

During the above welding work of the pipe on the groove, the end faces of the pipe are kept in contact with each other over the entire circumference, and the joint portion is welded. However, when the pipe is placed on the sleeper and the ends thereof are brought into contact with each other, the axes of the pipes are not normally aligned with each other, and the end faces thereof are not in contact with each other over the entire circumference. Therefore, by changing the height or position of the sleepers on which the pipes are placed, the relative positions and postures of the pipes are adjusted to bring them into the above-described all-circumferential contact state, but these pipes are supported by the sleepers. However, since the weight of a large-sized pipe is extremely large, it is difficult to finely adjust the relative position and posture, and the workability of this welding work is insufficient.

The present invention has been made in view of the above point, and "a plurality of pipes are provided outside the groove (U) for burying pipes".
(P ₁ ) (P ₁ ) are welded in series to form the burial pipe (P), and then this burial pipe (P) is hung on the bottom of the groove (U) to form the existing pipe (P ₀ ). Welding, in the method of burying a long pipe of the type that backfills the arrangement portion of these pipes, '' so that the end faces of the pipes (P ₁ ) (P ₁ ) can be quickly and accurately supported in an abutting state, The task is to improve the workability of welding work and the workability of the entire burying work. [Invention of Claim 1]

[0006]

[Technical Means] The technical means of the present invention taken to solve the above-mentioned problem is that "a pipe suspension device (K) having an inverted U-shaped support frame (1) is used. Hanging device
(K) is equipped with a chain block (2) movably supported with respect to the support frame (1) and a position adjusting device (3) for horizontally adjusting the supporting position of the chain block (2). ,. A plurality of pipe suspension devices (K) (K) are laid across the groove (U) and arranged in the longitudinal direction, and the pipe (P ₁ ) is supported by the chain block (2) of each pipe suspension device (K). 1) A process in which the pipes (P ₁ ) and (P ₁ ) are connected in series by suspending the pipes inside. By adjusting the hanging position and orientation of the chain block (2) (2) and the position adjusting device (3) (3) to actuate the by the pipe (P ₁₎ (P _1), the pipe (P ₁₎ (P ₁ ) The step of keeping the end faces in contact with each other over the entire circumference; A step of forming a burying pipe (P) by welding a joint portion of the pipes (P ₁ ) and (P ₁ ) maintained in the contact state; Activating the chain block (2) (2) to hang the buried pipe (P) on the bottom of the groove (U) ''
It was a matter of course.

[0007]

The above technical means of the present invention operates as follows. In this device, a plurality of pipe suspension devices (K) (K) each having an inverted U-shaped support frame (1) are arranged in the longitudinal direction while straddling a groove (U), and each pipe suspension device is arranged. When the pipe (P ₁ ) is suspended in the support frame (1) by the chain block (2) of (K), the pipes (P ₁ ) (P ₁ ) are put in series.

After that, when each chain block (2) is operated, the suspending position of the pipe (P ₁ ) is adjusted in the vertical direction, and
By operating each position adjustment device (3), the chain block
Since the support position of (2) with respect to the support frame (1) is adjusted in the horizontal direction, the hanging position is adjusted in the horizontal direction. Further, since the pipe (P ₁ ) is supported in a suspended state, its posture can be finely adjusted in the horizontal direction or the vertical direction by a human or the like.

By these adjustments, the end faces of the tubes (P ₁ ) (P ₁ ) are in contact with each other over the entire circumference. Then, when the pipes (P ₁ ) and (P ₁ ) are maintained in contact with each other and their joints are welded, the buried pipe (P) is formed. Then, the chain block (2) (2) is operated to suspend the buried pipe (P) on the bottom of the groove (U). With this, the suspension position of each pipe (P ₁ ) can be adjusted vertically and horizontally for each direction, and the amount of adjustment can be set arbitrarily, so fine adjustment of the suspension position is easy. . Also, the posture of the pipe (P ₁ ) can be easily fine-adjusted. Since the chain block (2) is manually operated, it is easy to finely adjust the hanging position in the vertical direction.

[0010]

[Effects] The present invention having the above-described structure has the following unique effects. With this, it is easy to finely adjust the hanging position and posture of the pipe (P ₁ ) (P ₁ ) during welding work, so the pipe (P ₁ ) (P ₁ ) can be quickly and accurately It is possible to make contact all around. This improves the workability of the welding work, and further improves the workability of the entire burying work.

Further, in this product, the groove of the buried pipe (P) formed by the welding work of the pipes (P ₁ ) (P ₁ ) is continued.
Since it can be hung on (U), the workability of the whole burial work is improved in this respect as well. It should be noted that the adjustment work remains the same not only when the pipes (P ₁ ) and (P ₁ ) are welded in a straight posture, but also when these pipes are welded in a bent posture. . [Invention of Claim 2] The invention of Claim 2 is the same as that of the invention of Claim 1 above, but when the embedding pipe (P) is hung at the bottom of the groove (U), it is a pair of chains. block
(2) Suspend only the (2), and operate the chain blocks (2) and (2) and their position adjusting devices (3) and (3) to suspend the buried pipe (P). By adjusting the position and orientation, the buried pipe (P) and the existing pipe (P)
The end surfaces of ( ₀ ) are in contact with each other over the entire circumference, and the pipe joints maintained in this contact state are welded together. ”

In this case, the buried pipe (P) and the existing pipe (P ₀ )
During welding work with, when operating the pair of chain blocks (2) and (2) and their position adjusting devices (3) and (3) that support the buried pipe (P) in a suspended state, Piping
(P) is a two-point support state, and the relative position and orientation with respect to the existing pipe (P ₀ ) are adjusted. That is, the chain block
(2) When (2) is operated simultaneously in the same direction, the hanging position is adjusted vertically while maintaining a constant posture, and when the operating direction or the operation amount is changed, the suspending posture is changed vertically. Adjusted. Similarly, the position adjusting devices (3) and (3) also adjust the hanging position in the horizontal direction and the hanging posture in the horizontal direction. By these adjustments, the end faces of the buried pipe (P) and the existing pipe (P ₀ ) can be in contact with each other over the entire circumference.

In this case, the buried pipe (P) and the existing pipe
During the welding work of (P ₀ ), fine adjustment for bringing them into contact with each other around the entire circumference can be performed quickly and accurately, so that the workability of the welding work is improved. Therefore, the workability of the entire burying work is further improved. Also, since the welding work between the burying pipe (P) and the existing pipe (P ₀ ) can be performed continuously with the process of suspending the burying pipe (P) in the groove (U), in this respect also Overall workability is improved. [Invention of Claim 3] The invention of Claim 3 relates to a pipe suspension device used for carrying out the invention of Claim 1 above, and the technical means therefor is "a pair of inverted U-shapes". A support frame (1) in which the main frames (12) (12) are integrated side by side with a certain interval, and an upper horizontal part (12a) of the main frame (12) (12) of the support frame (1). ) (12a) movably supported in the first longitudinal direction (C ₁ )
Support frame (31) and the support frame of the first support frame (31)
A first adjusting device (3a) for adjusting the supporting position with respect to (1) in the first direction (C ₁ ), and a second direction perpendicular to the moving direction of the first supporting frame (31). The second support frame (32) is movably supported in the direction (C ₂ ), and the support position of the second support frame (32) with respect to the first support frame (31) is the second direction (C 2).
₂ ) A second adjusting device (3b) for adjusting to the second support frame
It consists of a chain block (2) for suspending the pipe supported by (32) '.

In this structure, the support frame (1) is formed in an inverted U shape as a whole, so that the pipe suspension device can be placed by straddling the groove for embedding the pipe. The chain block (2) is firstly attached to the support frame (1).
-Since it is supported via the second support frames (31) and (32), the hanging position of the pipe suspended on this can be adjusted in the vertical direction. Further, by the first adjusting device (3a), the first support frame (3
The support position of (1) with respect to the support frame (1) is in the first direction (C
₁ ) and the second adjusting device (3b)
The support position of the support frame (32) with respect to the first support frame (31) is the second
Adjusted in direction (C ₂ ). At this time, the first and second directions
Since (C ₁ ) and (C ₂ ) are at right angles to each other, the horizontal position of the chain block (2) with respect to the support frame (1) is adjusted.

Therefore, in this device, the hanging position of the pipe hanging on the pipe can be adjusted in the vertical direction and the horizontal direction, whereby the pipe hanging device is used for carrying out the invention of claim 1 above. it can.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 1, the inventions of claim 1 and claim 2 are carried out when a pair of pipe suspension devices (K) and (K) are used. As shown in FIGS. 2 and 3, the device (K) has the above-mentioned support frame (1) formed by combining rod-shaped members into an inverted U-shape as a whole, and the above-mentioned support frame (1) is provided at the upper end thereof with A position adjusting device (3) and a chain block (2) supported by the position adjusting device (3) are provided.

[Construction of Pipe Suspension Device (K)] As shown in the figure, the support frame (1) is constructed such that a pair of inverted U-shaped main frames (12) and (12) have their upright portions ( 12b) (12b) is a structure integrated by a plurality of connecting rods (11) (11), the connecting rod (11) (11) is provided in a horizontal posture, the upright portion (12b) The connection position with (12b) is the upper and lower ends of these. Support rods (13) and (13) are also connected between the upper horizontal portions (12a) and (12a) of the main frames (12) and (12) so as to be positioned at the left and right end portions thereof.

As shown in FIGS. 3 and 4, on the upper end horizontal portions (12a) (12a), a rectangular first support frame (31) is supported by both longitudinal end portions thereof. Are movably supported in a first direction (C ₁ ) along the longitudinal direction of the upper end horizontal portions (12a) (12a). Also, between the support rods (13) (13),
At one upper horizontal portion (12a) eccentric to the side position, the first feed screw parallel to the first direction (C ₁₎ (L ₁₎ it is bridged. One end of this is connected to a first drive motor (M ₁ ) which penetrates the support rod (13) and is continuously provided outside the support rod (13). Further, the first feed screw (L ₁ ) has a pair of first projecting pieces (33) (33) (hanging from a side wall portion of the first support frame (31) that is perpendicular to the first direction (C ₁ ). 33) and the first bearing (34) interposed therebetween and are screwed therethrough. The first drive motor (M ₁ ) and the first feed screw (L ₁ ) serve as the above-mentioned first adjusting device (3a).

A rectangular second support frame (32) is provided on the first support frame (31) in a second direction (C ₂ ) along the longitudinal direction of the first support frame (31). It is movably supported and this second
The length of the support frame (32) in the first direction (C ₁ ) is the same as that of the first support frame (3
It is the same as 1) and the length in the second direction (C ₂ ) is set shorter than that of the first support frame (31). Further, in the first support frame (31), a pair of support walls are provided at a position inside a predetermined distance from the side wall part having the same length as the second support frame (32) in parallel with the side wall part and in an upright posture.
(35) (35) is provided, and the second wall is provided between the support walls (35) (35).
A second feed screw (L ₂ ) is installed parallel to the direction (C ₂ ).
A second drive motor (M ₂ ) is disposed on the outer surface of one end of the first support frame (31), and the support wall (35) and the first support frame (3
A pair of bevel gears (61) (6) installed between the side wall of (1) and
The second drive motor (M ₂ ) and the second feed screw (L ₂ ) are interlocked via 2). In addition, the second feed screw (L ₂ )
Is the first support frame (31) from the center of the second support frame (32).
A pair of second protrusions (36) (36) hanging inward and a second bearing (37) interposed therebetween are screwed through. These second feed screw (L ₂ ) and second drive motor (M ₂ ) are
It becomes the adjusting device (3b). Further, the second adjusting device (3b) and the first adjusting device (3a) are the position adjusting device (3) described in claim 1.

In this structure, when the first drive motor (M ₁ ) is operated, the first support frame (31) moves in the first direction (C ₁ ),
When the second drive motor (M ₂ ) is activated, the second support frame (3
2) moves in the second direction (C ₂ ), but the movable range of the support position of this chain block (2) when the below-mentioned chain block (2) is suspended on the second support frame (32) Between the supporting rods (13) and (13) and the first feed screw (L ₁ )
Position and the horizontal part (1
2a).

Further, the chain block (2) is shown in FIG.
And, as shown in FIG. 5, it is suspended on the second bearing (37). This chain block (2) has a well-known mechanism, and by operating the operation chain (22) of this, the load chain (2) having the hook (21) at its lower end is installed.
3) is a structure that can be rolled up or down. Wheels (4) and (4) are separately provided at the lower ends of the main frames (12) and (12), and the traveling direction thereof is set to the second direction (C ₂ ). Further, inside the lower ends of the main frames (12) and (12), jacks (5) and (5) are separately provided in series, and the output part (51) of each jack (5) can be driven downward. At the same time, the pressure receiving plate (52) having a larger cross section is connected to the lower end of the output part (51).

[Actual Construction] Next, the actual construction of burying a long pipe by using the pair of pipe suspension devices (K) and (K) will be described in detail below. First, the groove (U) for burying the pipe is formed by excavation as in the conventional method, and the pipe suspension device (K) (K) is formed.
Is placed over the groove (U) in a posture in which the second direction (C ₂ ) is parallel to the longitudinal direction of the groove (U). As shown in FIG. 2, the gap (A) between the inner edges of the pressure receiving plates (52) and (52) in this width direction is set to be larger than the width (B) of the groove (U). Needless to say

Further, the pipe suspension devices (K) (K) are placed in a state in which they are spaced apart from each other in the longitudinal direction of the groove (U), and the support frame
(1) Set the center interval of (1) so as to approximately match the length of _one pipe (P ₁ ). At this time, the second support frame (32) is positioned at the center between the upper horizontal portions (12a) (12a). The first support frame (31) is placed in the center between the support rods (13) and (13). Then, when the jacks (5) (5) are actuated to move these output parts (51) (51) downward, they are grounded and the wheels (4) (4) are in a non-grounded state. Become. As a result, the mounting state of the support frame (1) is stabilized, and each work described later is surely performed.

Then, the pipe (P ₁ ) is suspended from the chain block (2) of each pipe suspension device (K). This pipe (P ₁ ) is suspended from the suspension hook (21) of the chain block (2) via the wire wound around the center of the pipe (P ₁ ) and the supporting frame.
(1) It is inserted in the horizontal position (state shown by the solid line in Fig. 1).
In addition, in this suspending work, after the sleeper is hung over the groove (U) and the pipe (P ₁ ) is placed in advance, the pipe suspending device (K) is placed in the above-described installed state, and then the chain block ( It may be hung on 2) or by another procedure.

At this time, the relationship between the distance between the support frames (1) and (1) and the length of the pipe (P), and the first and second supports (31)
Since the initial position of (32) is set as described above, the ends of the pipes (P ₁ ) and (P ₁ ) are close to each other. In this embodiment, a steel pipe is used as the pipe (P ₁ ). Thereafter, when the chain block (2) of each pipe suspension device (K) is operated and the first and second adjusting devices (3a) and (3b) are operated, the chain block (2) causes the pipe (P) to move. The hanging position of ₁ ) is adjusted vertically. In addition, the first adjusting device (3
According to a), the second adjusting device (3b) and the chain block (2)
There was moved in the longitudinal direction of the perpendicular direction of the groove (U), also by the second adjusting device (3b), since the chain hoist (2) moves in the longitudinal direction of the groove (U), said pipe (P ₁ The hanging position of) is adjusted horizontally. Furthermore, since the pipe (P ₁ ) is suspended in a horizontal posture at its central portion, the posture can be easily adjusted manually. By these adjustments, the end faces of the pipe (P ₁ ) (P ₁ ) can be in contact with each other over the entire circumference.
During the adjustment work, the chain block (2) (2),
All of the first adjusting devices (3a) (3a) and the second adjusting devices (3b) (3b) may be used, or a part thereof may be used.
Further, a remote control operating portion for operating the first and second adjusting devices (3a) and (3b) is provided at a position on the support frame (1) where it is easy to operate, whereby the first and second drive motors (M ₁ ) (M ₂ )
It may be configured to turn on / off the.

The attitude of the In this construction, since the hanging position of the pipe (P ₁₎ is adjusted in that direction by the vertical and horizontal directions, moreover, can be arbitrarily set the adjustment amount, also the pipe (P ₁₎ The tube (P ₁ ) (P
The end faces of ₁ ) can be quickly and accurately brought into contact with each other around the entire circumference. Since the chain block (2) is manually operated, fine adjustment of the hanging position in the vertical direction is easy and accurate.

After that, when the pipes (P ₁ ) and (P ₁ ) are maintained in the above-mentioned contact state and their joints are welded, these pipes (P ₁ ) and (P ₁ ) are integrated and embedded pipe ( P). At the time of this welding, the joint may be temporarily fixed by spot welding or the like in the facing state, a welding machine may be attached, and then the joint may be welded all around. Alternatively, another method may be used.

Further, thereafter, by operating both of the chain blocks (2) and (2) in the same direction, the buried pipe
(P) is hung on the bottom of the groove (U) (indicated by the chain double-dashed line in Fig. 1). And the chain block (2) of each pipe suspension device (K)
When the first and second adjusting devices (3a) and (3b) are operated, the suspended position and posture of the buried pipe (P) are adjusted. In other words, when the chain blocks (2) and (2) are operated simultaneously in the same direction, the suspension position in the vertical direction is adjusted while maintaining a constant posture, and when the operation direction or the operation amount is changed, the posture is changed to the vertical direction. Adjusted in direction. Also, the first and second adjusting devices (3
The suspension position and the horizontal posture in the horizontal direction are adjusted in the same manner by a) and (3b). By these adjustments, the end faces of the buried pipe (P) and the existing pipe (P ₀ ) can be in contact with each other over the entire circumference. The buried pipe (P) and the existing pipe (P ₀ ) are integrated by welding the pipe joint portion maintained in the facing state. In addition, as shown in FIG. 1, the portion of the groove (U) located at the welded portion has a larger groove width and is deeper than other portions, so that a welding machine can be installed or an operator can enter. It goes without saying that we are doing so.

In this case, the buried pipe (P) and the existing pipe
(P₀) During the welding work,
Fine adjustment can be performed quickly and accurately. Also, the groove
Continue the process of hanging the burying pipe (P) to (U),
Buried pipe (P) and existing pipe (P ₀) Welding work with
It Further after this, the output parts (51) (5) of the jacks (5) (5)
Retract 1) upwards and support frame with wheels (4) (4)
(1) is supported, and each pipe suspension device (K) is connected to the groove (U).
On the unpiped side of, the distance for the length of the buried pipe (P)
After moving it, advance the output part (51) (51) and
The support frame (1) is supported by the
The pipe arrangement process similar to that described above is performed. And the piping
By repeating the placement process continuously, the length in the groove (U) is increased.
A length pipe is formed. After this, refill the piping arrangement part
Then, this burying process is completed. The backfill is
May be carried out each time one buried pipe (P) is placed
Needless to say.

[Modification] In the above example, a pair of pipe suspension devices (K) (K) was used.
However, it is possible to use three or more pipe suspension devices (K) (K) at the same time.
You may make it. In this case, a pair of adjacent pipes (P₁)
(P₁) Mutual welding work is performed in the same manner as above, and
All tubes (P₁) (P ₁), These are integrated
A buried pipe (P) is formed. And this buried pipe
When lifting (P) into the groove (U), check all chains.
Block (2) (2) simultaneously in the same direction to
Section, and then connect the buried pipe (P) to a pair of chains.
Suspended only with the rock block (2) (2).
(A chain chain other than these chain blocks (2) (2)
Remove the wires from the locks (2) (2)). In this state,
As in the example, the buried pipe (P) and the existing pipe (P)₀) And above
Carry out welding work. In addition, connect the buried pipe (P) to the groove (U).
Immediately before unloading, connect the buried pipe (P) to the chain
It may be suspended only by the locks (2) (2).

.. In the above embodiment, the pipe suspension device (K) is connected to the pipe (P
₁) Is suspended and the pipe (P₁) Fine adjustment of the posture
However, as shown in FIG.
It may be configured to have the adjusting means (7) (7). Also in the figure
In the main frame (12) (12), the upper horizontal part (12a) (12a)
Of the support pieces (16), (16) protruding outward from the above in the second direction
Hydraulic cylinder as the above-mentioned driving device (70) supported individually
(71) and the lower end of the output shaft (72) that hangs downwards
The posture adjusting means (7) is connected to the pipe holding part (73)
Be composed. In this one, the pipe is attached to the chain block (2).
(P₁) With this tube (P₁) With one hand
When pushed down by the step (7), this tube (P₁) Is up and down
Direction, the pipe (P₁) (P₁)
It is easy to adjust the ends of the
It will be easy. In addition, it is easy to maintain this contact state.
Therefore, the workability of welding work is improved. Furthermore, the above
Set the support position of the posture adjusting means (7) in the first direction (C₁)
If possible, the pipe (P ₁) Attitude is also adjusted horizontally
Therefore, the adjustment work and welding work described above will be performed.
The workability is further improved. Incidentally, the posture adjusting means (7)
Is the pipe (P₁) Is used to adjust the posture.
It may be done. Also, only one attitude adjustment means (7) is provided.
The configuration may be different.

[0032] In the above embodiment, the support frame (1) of the pipe suspension device (K) has a structure in which rod-shaped members are combined, but the present invention is not limited to this. ． In the above embodiment, the position adjusting device (3) is provided with
Although the second adjusting devices (3a) and (3b) are used, other structures can be adopted as long as the supporting position of the chain block (2) with respect to the supporting frame (1) can be adjusted in the horizontal direction.

.. As the pipe (P ₁ ), other than the above steel pipes can be used as long as they can be welded. ． In the above embodiment, the pipe suspension device (K) was manually moved, but the drive motor is interlocked with the wheels (4) and (4), and the pipe suspension device (K) is moved by the operation of the drive motor. It may be configured.

[Brief description of drawings]

FIG. 1 is an explanatory view of a burying process in an embodiment of the present invention.

[Fig. 2] Front view of the pipe (P ₁ ) suspended from the pipe suspension device (K).

FIG. 3 Top view of this

FIG. 4 is a sectional view taken along line XX.

FIG. 5 is a sectional view taken along line YY

FIG. 6 is a side view of a pipe suspension device (K) equipped with a posture adjusting means (7).

[Explanation of symbols]

(U) ・ ・ ・ Groove (P ₁ ) ・ ・ ・ Pipe (P) ・ ・ ・ Buried pipe (K) ・ ・ ・ Pipe suspension device (1) ・ ・ ・ Support frame (2) ・ ・ ・ Chain block ( 3) ・ ・ ・ Position adjusting device (P ₀ ) ・ ・ ・ Existing pipe (12) ・ ・ ・ Main frame (12a) ・ ・ ・ Top horizontal part (31) ・ ・ ・ First support frame (32) ・ ・ ・Second support frame (3a) ... First adjusting device (3b) ... Second adjusting device (7) ... Attitude adjusting means

Front page continued (72) Inventor Ryoji Shinno 2 Deshima Nishimachi, Sakai City, Osaka Prefecture Sumitomo Metals Plantech Co., Ltd. (72) Inventor Takashi Kawakami 3-25-29 Takanawa, Minato-ku, Tokyo Nakamichi Machine Industry Co., Ltd. Within

Claims (4)

[Claims] 1. A plurality of pipes (P) are provided outside a groove (U) for burying pipes.
₁ ) (P ₁ ) are welded in series to form the buried pipe (P),
This buried pipe (P) is hung on the bottom of the groove (U), welded to the existing pipe (P ₀ ), and the arrangement of these pipes is backfilled. It is assumed that a pipe suspension device (K) equipped with the support frame (1) of (1) is used, and this pipe suspension device (K) has a chain block (2) movably supported with respect to the support frame (1). ) And a position adjusting device (3) for adjusting the supporting position of the same in the horizontal direction, A plurality of pipe suspension devices (K) (K) are laid across the groove (U) and arranged in the longitudinal direction, and the pipe (P ₁ ) is supported by the chain block (2) of each pipe suspension device (K). 1) A process in which the pipes (P ₁ ) and (P ₁ ) are connected in series by suspending the pipes inside. By adjusting the hanging position and orientation of the chain block (2) (2) and the position adjusting device (3) (3) to actuate the by the pipe (P ₁₎ (P _1), the pipe (P ₁₎ (P ₁ ) The step of keeping the end faces in contact with each other over the entire circumference; A step of forming a burying pipe (P) by welding a joint portion of the pipes (P ₁ ) and (P ₁ ) maintained in the contact state; A method for burying a long pipe, comprising a step of activating the chain block (2) (2) to suspend the burying pipe (P) on the bottom of the groove (U). 2. When the buried pipe (P) is hung at the bottom of the groove (U), it is suspended only by a pair of chain blocks (2) and (2), and these chain blocks (2 ) (2) and these position adjusting devices (3) and (3) are operated to adjust the hanging position and posture of the burial pipe (P), and the burial pipe (P) and the existing pipe (P). The method for burying a long pipe according to claim 1, wherein the end faces of (P ₀ )) are in contact with each other over the entire circumference, and the pipe joint portion maintained in this contact state is welded. 3. A support frame (1) in which a pair of inverted U-shaped main frames (12) (12) are integrally arranged side by side at regular intervals.
And a first frame movably supported in the first longitudinal direction (C ₁ ) by upper end horizontal portions (12a) (12a) of the main frames (12) (12) of the support frame (1). A support frame (31) and a first adjusting device (3a) for adjusting the support position of the first support frame (31) with respect to the support frame (1) in the first direction (C ₁ ).
A second support frame (32) movably supported by the first support frame (31) in a second direction (C ₂ ) perpendicular to the direction of movement of the first support frame (31); 32) The first support frame (31)
From a second adjusting device (3b) for adjusting the support position for the second direction (C ₂ ) and a chain block (2) for pipe suspension supported by the second support frame (32) Tube suspension equipment. 4. A pipe holding portion (73) which is brought into contact with or attached to a portion of the pipe (P ₁ ) separated from the suspension position by the chain block (2), and the pipe holding portion (73) is arranged in the vertical direction. The pipe suspension device according to claim 3, further comprising a posture adjusting means (7) including a driving device (70) for driving.