JPH06129185A - Pipe joint method and device thereof - Google Patents

Abstract

PURPOSE:To make it possible to jack and bury a pipe by supporting a succeeding pipe in a state positioned accurately and easily at the rear end of a buried pipe when jacking and burying pipes underground one by one from a shaft. CONSTITUTION:After having jacked and buried a pipe Pa underground by means of a jack 4, a movbale pipe receiving base 6c of a front side pipe receiving device 6 is placed into contact with the both sides at the rear end of the pipe Pa, thereby measuring a rear side pipe axis of the buried pipe Pa. The both sides at the front end are supported with the movable pipe receiving base 6c which is moved to the position whose movement variable is equivalent to the measurement variable while a movable pipe receiving base 7c of a pipe receiving device 7 at the rear side is adjusted so that a pipe core of a succeeding pipe Pb may aligh with the center of a contact frame 4b of the jack device 4 when the succeeding pipe Pb is loaded on the movable pipe receiving base 7c. Then, after the succeeding pipe Pb is loaded on the front and the rear side pipe receiving devices 6 and 7, the succeeding pipe Pb is connected to the buried pipe Pa by driving the jack device 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining pipes such as a Hume pipe which can be sequentially and accurately joined and propelled and buried in the ground, and an apparatus for carrying out the method. It is a thing.

[0002]

2. Description of the Related Art Propulsion is made by sequentially connecting tubular bodies such as fume tubes in series from the inside of a starting shaft toward the reaching shaft.
For burying, as shown in FIG. 14, a succeeding pipe body Pb to be buried next is interposed between the pipe body propulsion device B installed in the starting shaft A and the pipe body Pa already buried. The front end of Pb is fitted into the rear end collar portion C of the buried pipe Pa while the rear pipe Pb
By mounting the rear end collar portion C on the fitting protrusion E provided on the front surface of the frame D of the propulsion device B, the propulsion jack E of the propulsion device B is extended to be attached to the tip of the jack. The subsequent tubular body Pb is pushed through the present frame D.

In such a pipe body propulsion and burying method, in order to bury the pipe body on the planned burying pipe accurately, the succeeding pipe body is required.
The front and rear ends of Pb must be accurately joined to the rear end of the embedded pipe Pa and the corresponding frame D of the propulsion device B. Therefore, the succeeding pipe Pb is conventionally fixed by a chain block or the like. In the suspended state, the front end portion is fitted to the rear end collar portion of the buried pipe Pa, and the rear end collar portion C is fitted to the fitting projection E of the present frame D while being aligned, respectively, and then propelled. It is being propelled and buried by device B.

[0004]

However, the front and rear ends of the succeeding pipe body Pb are connected to the rear end of the embedded pipe body Pa and the fitting projection E of the frame D.
To align with respect to the
Since it is necessary to adjust the posture of the succeeding tubular body Pb suspended by a chain block or the like while confirming the vertical and horizontal positions of the above, there is a problem that the work requires a great deal of work and the work efficiency decreases. is there.

Further, even if the front and rear ends of the succeeding tubular body Pb are fitted to the rear end of the buried tubular body Pa and the fitting projection E of the frame D by this work, the fitting portion is slightly There is a gap,
Moreover, since packing is attached to the inner peripheral surface of the collar portion C and the like, the propulsion is performed with the center of the succeeding pipe body Pb displaced from the center of the embedded pipe body Pa or the present frame D due to elastic compression of the packing. However, there is a problem in that the displacement dimension is sequentially accumulated as the pipes are sequentially embedded, and the pipes cannot be embedded along the planned pipeline. An object of the present invention is to provide a method for joining pipes and a device for carrying out the method, which can fundamentally solve such problems.

[0006]

In order to achieve the above object, the pipe joining method of the present invention measures the vertical and horizontal positions at the rear end portion of the pipes buried previously, and according to the measured values. By mounting the front end of the succeeding pipe on the adjusted pipe pedestal, the center of the front end of the succeeding pipe is matched with the center of the rear end of the buried pipe, while the rear end of the succeeding pipe is propelled by the propulsion device. The rear end portion is supported by the succeeding pipe receiving device in a state of being aligned with the center of the frame, and then the succeeding pipe body is pushed forward by the propulsion device to join the front end of the succeeding pipe body to the buried pipe rear end. It is characterized by.

As an apparatus for carrying out the above method, a front and rear pipe receiving device for supporting the front and rear end portions of the subsequent pipe body to be buried, and the rear pipe body which is brought into contact with the rear end surface of the subsequent pipe body. The front pipe receiving device has a movable pedestal for positioning the pipe vertically and horizontally and is movable in the pipe propulsion direction. The position of the rear end of the pipe embedded in the pedestal can be measured, and the rear pipe receiving device adjusts the vertical and horizontal positions of the rear end of the succeeding pipe to match the frame of the propulsion device. The movable pedestal is provided so that the succeeding tubular body is mounted on the movable pedestal only when the succeeding tubular body is joined.

In the above-mentioned joining device for pipes, the pipe receiving device for supporting the front end of the succeeding pipe is movable in the propulsion direction, and the rear end of the buried pipe can be received by the movable pedestal. However, as described in claim 3, a receiving device for supporting the rear end portion of the embedded pipe body is provided separately from the receiving device for supporting the front end portion of the subsequent pipe body, and the movable pedestal thereof is provided. By detecting the position of the embedded pipe in the vertical and horizontal directions, and moving the movable pedestal that supports the front end of the succeeding pipe in accordance with the detected amount. It may be configured to adjust the position in the direction.

[0008]

When one pipe is propelled and buried in the ground, first, the movable pedestal of the front receiving device is brought into contact with both side surfaces of the rear end lower peripheral portion of the buried pipe, The pipe receiving device is moved to the front end supporting position of the succeeding pipe body, and the movable pedestal is set at the same position as the contact position with respect to the embedded pipe body. When a pipe receiving device for supporting the front end of the succeeding pipe is separately provided, the moving amount of the movable pedestal by the pipe receiving device for the buried pipe is detected and the succeeding pipe is detected according to the detected amount. Move and adjust the movable pedestal of the tube receiving device.

On the other hand, the movable pedestal of the rear end portion pipe receiving device of the succeeding pipe body is moved to the pipe body supporting position, and the rear end center of the succeeding pipe body supported on the movable pedestal is in contact with the propulsion device. Adjust the position of the movable pedestal so that it matches the center of the frame. After that, the succeeding pipes are suspended and the front and rear ends thereof are supported in a suspended state on the movable pedestals of these front and rear receiving devices.

In this state, when the propulsion device is actuated to move the corresponding frame forward, the front end face of the frame comes into contact with the rear end face of the succeeding pipe in a state where their centers coincide with each other and the succeeding pipe is The pipe body is advanced to join the front end face of the pipe body to the rear end face of the embedded pipe body in a state where the centers of both pipes coincide with each other, and the subsequent pipe body is propelled and embedded while pushing the embedded pipe body into the ground. At the time of propulsion of the succeeding tubular body, the rear pipe receiving device that supports the rear end portion of the succeeding tubular body is made to stand sideways from the forward direction path of the propulsion device in the frame. In this way, when the propulsion and embedding of the succeeding pipe is completed, this succeeding pipe becomes the embedding pipe, and the next succeeding pipe is positioned again with respect to the embedding pipe in the same manner as above, and then the propelling and embedding is carried out. Is.

[0011]

Embodiments of the present invention will now be described with reference to the drawings, in which 1 is a starting shaft, which has a wellhead wall 2 and a reaction force wall 3 formed on the front and rear wall surfaces thereof, and which is supported by the reaction force wall 3. The propelling device 4 is used to propel and bury a pipe body P such as a fume pipe into the ground through the wellhead 2a opened in the wellhead wall 2. Reference numeral 5 denotes two parallel rails laid on a pedestal 15 fixed to the bottom of the shaft between the propulsion device 4 and the lower end of the wellhead wall in the direction of propulsion of the propulsion device 4. Devices 6, 7 are provided.

As shown in FIGS. 3 and 4, the front pipe receiving device 6 runs on the parallel rails 5 at the lower portions on both sides of a horizontally long rectangular fixed frame 6a longer than the width between the rails of the parallel rails 5. Wheels 6b, 6b are rotatably supported and fixed frame 6a
The pipe pedestals 6c and 6c are disposed on both upper sides of the pedestal so as to be horizontally movable in a direction orthogonal to the parallel rails 5, that is, in the left and right directions. The tube receiving rollers 6d, 6d are formed on the taper portion so as to be rotatably supported. Further, the lower ends of these pipe pedestals 6c, 6c are fixed to the upper surfaces of sliding frames 6e, 6e, which are slidably arranged in the both sides of the fixed frame 6a, respectively. The movable frames 6e, 6e and the central partition plate 6f of the fixed frame 6a are connected by hydraulic jacks 6g, 6g with a built-in stroke sensor, and can be moved in the left and right direction by the jack 6g.

Reference numeral 8 is a moving hydraulic jack mounted on both end faces of the pipe receiving device 6 in parallel with the rail 5, and the rod end is connected to the lower end of the wellhead wall 2 and the pipe receiving device 6 is operated by the operation of the jack 8. Is moved back and forth on the rail 5.

On the other hand, as shown in FIGS. 5 and 6, the pipe receiving device 7 on the rear side has a horizontally long rectangular fixed frame 7a longer than the width between the rails of the parallel rail 5 than the upper surface of the rail 5. It is horizontally fixed in the state of being immersed downward. That is, a part of the parallel rail 5 and the pedestals 15, 15 is cut out by a length dimension capable of fitting the fixed frame 7a, and both side parts of the fixed frame 7a are fitted in the cutout portions 16.

Similarly to the front side receiving device 6, this receiving device 7 is also provided with sliding frames 7e, 7e on both sides of the fixed frame 7a so as to be slidable from side to side. 7e is central fixed partition 7f
Positioning hydraulic jack 7g, 7g with one end connected to
The slide frame 7e is configured to be movable in the left-right direction, and the lower ends of the pipe holders 7c and 7c rotatably supporting the pipe receiving roller 7d at the upper end are fixed to the outer upper surface of these sliding frames 7e. The pipe pedestal 7c is projected above the parallel rails 5, and rail pieces 5a, 5a forming a part of the parallel rails 5 are fixed to the insides of the upper surfaces of the sliding frames 7e, 7e. I am doing it.

In addition, the propulsion device 4 has a reaction force wall 3 at the base end.
A plurality of propulsion jacks 4a received on the side of the shaft 2a are arranged and fixed in parallel to each other, and the front surface of the propulsion jacks 4a is formed at the rear end receiving surface of the pipe P. 4b is fixed, and a disc-shaped fitting projection 4c for fitting the inner peripheral surface of the end portion of the pipe body P is provided at the center of the front surface of this frame with the center aligned with the pipe core on the planned propulsion line. It will be done. Further, a wheeled carriage 4d traveling on the parallel rail 5 is integrally attached to the lower end of the frame 4b.

The method of joining and propelling the pipes by the device configured as described above will be described. FIG. 7 shows a state in which the pipe Pa is propelled and buried in the ground from the pit 2a by the propulsion device 4. , In this state, the propulsion device 4
The carriage 4d is retracted to the propulsion start position by contracting the propulsion jack 4a. Then, the front side pipe receiving device 6 is moved to the lower side of the rear end portion of the embedded pipe body Pa by contraction of the hydraulic jack 8, and both side pipe receiving bases 6c, 6c are moved to the hydraulic jack 6
The tube receiving rollers 6d, 6d are moved by g and 6g toward each other so that the tube receiving rollers 6d, 6d are brought into contact with both sides of the lower peripheral surface of the rear end portion of the embedded tube body Pa. By detecting the stroke amounts of the hydraulic jacks 6g and 6g that have been extended until they come into contact with each other, the position of the embedded pipe Pa in the vertical and horizontal directions, that is, the pipe core position can be detected. In this state,
Both the tube receiving bases 7c, 7c of the rear receiving device 7 are retracted outward as shown by the one-dot chain line in FIG. 6 so that the rail piece 5a is aligned with the rail 5 and the carriage 4d of the propulsion device 4 is It is freely movable.

Next, the front pipe receiving device 6 is attached to the hydraulic jack 8
To be connected next by the extension of (the subsequent tube)
Retract to the front end receiving position of Pb, set the stroke amount of the pipe cradle moving hydraulic jacks 6g, 6g to the same stroke amount as above, and make the pipe cradle 6c, 6c the same position as the contact position with the embedded pipe Pa. Set to the position. On the other hand, the movable pipe pedestals 7c, 7c of the rear pipe receiving device 7 are brought close to each other so as to support both sides of the lower peripheral surface of the rear end portion of the rear pipe body Pb. The stroke amount of the hydraulic jacks 7g, 7g for moving the pipe pedestals 7c, 7c is such that the center of the succeeding pipe body Pb supported on the pipe pedestals 7c, 7c is the frame 4b.
It is set in advance so that it is up to the center position.

After positioning the movable pipe cradle 6c, 6c, 7c, 7c of the front and rear pipe receivers 6, 7 in this way, as shown in FIG. The succeeding pipe body Pb is hung between the frame 4b and its front and rear parts,
When it is supported on the tube receiving rollers 6d, 7d of the tube receiving bases 6c, 7c of 7, the front end center of the succeeding pipe body Pb coincides with the pipe core of the embedded pipe body Pa, and the rear end center of the frame 4b. It is located on the center line.

In this state, the propulsion jack of the propulsion device 4
When the frame 4b is extended, the frame 4b moves forward to fit the fitting protrusion 4c into the rear end collar portion C of the subsequent tube Pb and the front end face of the frame 4b follows as shown in FIG. When the propelling jack 4a is further contacted with the rear end surface of the pipe body Pb and the propulsion jack 4a is further extended, the succeeding pipe body Pb advances on the rollers 6d and 7d of the pipe receiving pedestals 6c and 7c, and the rear pipe Pb of FIG.
As shown in FIG. 5, the front end portion is fitted into the collar portion C of the embedded pipe body Pa and joined to the rear end surface of the embedded pipe body Pa.

When the joining and connecting work of the pipes is completed in this manner, the front pipe receiving device 6 is moved to the rear end side of the embedded pipe Pa, and both pipe receiving bases 7c, 7c of the rear pipe receiving device 7 are moved. The rail piece 5a protruding backward from the sliding frames 7e, 7e so as not to interfere with the propulsion work by retreating outward is positioned in the cutout portion of the rail 5, and the frame of the propulsion device 4 is positioned. Dolly 4d
Allow the advance of.

Thereafter, the propulsion device 4 is propelled and buried in the ground following the buried pipe Pa by advancing the present frame 4b and pushing the succeeding pipe Pb. When the rear pipe Pb is left in the state of being buried in the ground leaving the rear end thereof, the pipe press-fitting work by the propulsion device 4 is stopped, and the succeeding pipe Pb is embedded in the buried pipe Pa.
Similarly to the above, the embedded pipe Pa is
After detecting the upper, lower, left, and right positions of the rear end of the pipe, support the front end of the next succeeding pipe by setting the positions of the pipe cradle 6c, 6c according to the detected amount, and then, It is for joining and burying the succeeding pipes.

In the above embodiment, the front pipe receiving device 6 is movable back and forth to position the rear end of the embedded pipe Pa and the front end of the succeeding pipe Pb vertically and horizontally. However, as shown in FIG. 12, the pipe receiving devices are independently provided at the positions of the rear end of the embedded pipe Pa and the front and rear ends of the succeeding pipe Pb.
26, 27, 28 may be provided. The pipe receiving device 28 for detecting the vertical and horizontal positions of the rear end of the buried pipe Pa has substantially the same structure as the front pipe receiving device 6 in the above embodiment, but is fixed to the wellhead wall 2 side. The front and rear tube receiving devices 26 and 27, which support the front and rear end portions of the succeeding tube body Pb in a positioned state, have the same structure as the rear side tube receiving device 7 in the above embodiment. In this case, since the pipe receiving device 28 is not moved, the embedded pipe body is moved before the withdrawal of the corresponding frame 4b of the propulsion device 4 from the embedded pipe body Pa.
The upper, lower, left, and right positions of Pa can be measured, and the contact frame 4b supporting the embedded pipe Pa can be retracted. By doing so, it is possible to prevent the embedded pipe Pa from shifting due to earth pressure when the frame 4b is separated from the embedded pipe Pa.

The amount of stroke detected by the hydraulic jack with built-in stroke sensor of the buried pipe receiver 28 is determined by the front pipe receiver.
It is configured so that the center of the succeeding pipe supported by the pipe cradle and transmitted to the hydraulic jack 26 is aligned with the core of the embedded pipe, and the pipe pedestals of the front and rear pipe receiving devices 26 and 27 are After joining and connecting the pipes, the pipe is withdrawn in a direction away from the rail 5. Further, in the above embodiment, the tube receiving roller 6
Although the axial center directions of d and 7d are parallel to the pipe core direction, they may be attached to the pipe pedestals 6c and 7c in a state of being oriented at right angles, or directly without such rollers. The pipe body may be supported on the pipe cradle 6c, 7c. FIG. 13 shows a modified example of the pipe receiving device 7, in which the sliding frames 7e, 7e are slid at positions outside the rail 5 to bend the pipe receiving bases 7c, 7c. By doing this, rail 5 and pedestal 15
It is not necessary to cut out a part of.

[0025]

As described above, according to the present invention, the vertical and horizontal positions at the rear end of the buried pipe are measured and the front end of the succeeding pipe is adjusted on the front pipe pedestal adjusted according to the measured values. By placing the rear end of the succeeding pipe to the center of the rear end of the embedded pipe body while the rear end of the rear pipe is aligned with the center of the frame of the propulsion device. Since it is made to be supported by the side bearing device, it is possible to position the succeeding tubular member in the correct propulsion and embedding direction simply by mounting the succeeding tubular member between the receiving pedestals of these front and rear bearing devices. Moreover, the work can be done easily and efficiently.

Further, since the front and rear portions of the succeeding tubular body are supported by the front and rear pipe receiving devices, the succeeding tubular body is pushed by the propulsion device. It can be pushed forward in an exactly matched state, and the forward end of the subsequent pipe can be joined to the rear end face of the embedded pipe exactly as in the above-mentioned positioning state, so that the pipes can move vertically and horizontally. It is possible to bury them one after another with high accuracy without causing a deviation in the direction.

[Brief description of drawings]

FIG. 1 is a side view of the entire apparatus,

2 is a simplified plan view of FIG.

FIG. 3 is a side view of the front bearing device,

FIG. 4 is a partially longitudinal front view thereof,

FIG. 5 is a partial vertical cross-sectional side view of the rear receiving device,

FIG. 6 is a partially longitudinal front view of the same,

FIG. 7 is a side view of the pipe after the burial is completed,

FIG. 8 is a side view showing the installed state of the succeeding tube body;

FIG. 9 is a side view showing a state in which the propulsion device is moved forward and its frame is brought into contact with a succeeding pipe,

FIG. 10 is a side view showing a state in which a rear pipe is propelled and its front end face is joined to the buried pipe;

FIG. 11 is a side view showing a state in which the front pipe receiving device is moved to the buried pipe side;

FIG. 12 is a side view showing another embodiment of the present invention,

FIG. 13 is a vertical sectional front view of the bearing device,

FIG. 14 is a side view for explaining a conventional joining method.

[Explanation of symbols]

 1 Starting shaft 4 Propulsion device 4a Propulsion jack 4b This frame 5 Rail 6 Front side receiving device 6c Pipe pedestal 6g Hydraulic jack 7 Rear side receiving device 7c Pipe pedestal 7g Hydraulic jack Pa Embedded pipe Pb Subsequent pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuro Tatsuhama 2-2, Matsuzaki-cho, Abeno-ku, Osaka City Okumura-gumi Co., Ltd. (72) Atsushi Takubo 2-2, Matsuzaki-cho, Abeno-ku, Osaka Okumura Group Company

Claims (3)

[Claims] 1. A method for joining a pipe body subsequent to a propulsion buried pipe body, comprising measuring the vertical and horizontal positions at the rear end portion of the buried pipe body, and adjusting the pipe receptacle according to the measured values. By placing the front end of the succeeding pipe on the table, the center of the front end of the succeeding pipe is matched with the center of the rear end of the buried pipe, while the rear end of the succeeding pipe is set at the center of the frame of the propulsion device. A pipe characterized in that the rear end portion is supported by a succeeding pipe receiving device in a combined state, and thereafter, the succeeding pipe body is pushed forward by a propulsion device to join the front end of the succeeding pipe body to the buried pipe rear end. How to join the body. 2. A front and rear pipe receiving device for supporting front and rear end portions of a subsequent pipe body to be buried, and a propulsion device having a frame for abutting a rear end surface of the subsequent pipe body to push the subsequent pipe body. The front-side pipe receiving device has a movable pedestal for positioning the pipe vertically and horizontally, and a rear end portion of the pipe movably embedded in the movable pedestal in a movable direction. The position of the rear pipe receiving device can be measured, and the rear pipe receiving device has a movable pedestal that can adjust the vertical and horizontal positions of the rear end of the succeeding pipe to match the frame of the propulsion device. A joining device for pipes, wherein the succeeding pipes are mounted on the pedestal only when the following pipes are joined. 3. A front and rear bearing device for supporting the front and rear end portions of a subsequent pipe body to be buried, an embedded pipe bearing device for supporting a rear end portion of the buried pipe body, and an abutting member on the rear end surface of the subsequent pipe body. The embedded pipe receiving device comprises a movable pedestal that supports the embedded pipe and the position of the embedded pipe in the vertical and horizontal directions depending on the amount of movement of the movable pedestal. The front receiving device of the succeeding tubular body has a movable pedestal whose movement can be adjusted according to the detection amount, and the rear receiving device has a rear end portion of the succeeding pipe. It has a pedestal that supports the rear end of the succeeding tube with the left and right positions set to match the frame, and the pedestal is below the succeeding tube only when the succeeding tube is connected. A joining device for pipes, wherein the joining device is configured to be installed in the.