JPH06185289A - Pipe thrusting device - Google Patents

Abstract

PURPOSE:To prevent a pipe body from rolling and correct the advancing direction of the body in an attempt to advance and lay the pipe body, such as a temporary pipe or the like between a start shaft and an arrival shaft. CONSTITUTION:A holding frame 2 is installed to a carriage 1 which moves on a rail in the advancing direction. The rear end of a pipe body to be buried in a pipe body receiving projection board 5 installed to the front of this holding frame 2 is connectable in structure while the pipe body receiving projection board 5 is rotatable in its longitudinal direction with a jack 3, thereby preventing and correcting the rolling. Furthermore, pipe body extraction jacks 9 are installed to both ends of the holding frame 2 where reaction force is applied to the front wall surface of a start shaft by extending the rod so as to move back the carriage 1 and correct the advancing direction by extracting the pipe body which has been buried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for propelling and burying a tubular body such as a temporary pipe or a small diameter perforated pipe in the ground, and more particularly to a tubular body propulsion device capable of correcting the propulsion direction. It is a thing.

[0002]

2. Description of the Related Art Conventionally, for example, when laying a pipe body such as a small diameter perforated pipe for wiring in the ground, first, a state in which a large number of temporary pipes are connected in series between a starting shaft and a reaching shaft. After laying with, the temporary pipe is pressed and propelled sequentially from the starting shaft side following the temporary pipe, and the temporary pipe pushed out to the reaching vertical shaft by the promotion of the pipe body is removed. The method of replacing is done.

As a propulsion device for such a tubular body, a bogie having a frame for non-rotatably fixing and supporting the rear end surface of the tubular body is installed on a rail laid inside the starting shaft, and the rear surface of the frame is started. A device configured to be propelled by being pressed by a propulsion jack that has received a reaction force against the rear wall surface of the vertical shaft is adopted.

[0004]

When pipes such as temporary pipes are sequentially connected and propelled and buried in the ground by this pipe propulsion device, rolling occurs in the connected pipes and the pipes are separated from each other. When not only excessive stress is generated at the connection part but also when the pipe body is made of perforated pipe, the holes are not connected in a straight line but are connected in a twisted state, and wiring work in the hole after that etc. Will be difficult. In addition, after burying a temporary pipe between the starting shaft and the reaching shaft, the temporary pipe and the pipe body are replaced by successively advancing the temporary pipes while sequentially connecting the pipe bodies such as the Hume pipe. If rolling occurs in the temporary pipe connected to, the succeeding pipe body will be propelled while following the rolling, and accurate burying construction cannot be performed.

Further, when the pipe body is press-fitted into the ground by the pipe body propulsion device on the side of the starting shaft, the pipe body may be press-fitted in a state displaced from the planned propulsion line. In order to correct this propulsion direction, the tube must be pulled out once, but the propulsion jack only pushes the truck forward by bringing its rod end into contact with the rear surface of the frame. It is something that cannot be retreated. or,
If you fix the rod end of the propulsion jack to the back of the frame,
The trolley can be retracted by contracting the propulsion jack, but with such a configuration, it is impossible to rotate the frame in the rolling correction direction to perform the correction.

The present invention solves such a problem, and it can be pressed into the ground while preventing the occurrence of rolling at the time of propelling a tubular body such as a temporary pipe, and if rolling occurs, the correction can be made. In addition, it is another object of the present invention to provide a tubular body propulsion device which can be propelled again after the tubular body is pulled out, the direction is corrected, and if the tubular body is deviated in the propulsion direction during press fitting. .

[0007]

In order to achieve the above object, a pipe propulsion device of the present invention receives a rear end surface of a pipe on a carriage installed movably in the propulsion direction of the pipe and rotates. In a tubular body propulsion device in which a frame that is fixed improperly is provided, and the rear surface of the frame is pushed by a propulsion jack to propel and bury the tubular body in the ground, the rolling of the tubular body in the frame is performed. The structure is such that a jack or the like for preventing or correcting is provided and a tubular body pulling jack projecting in the propelling direction is attached to the corresponding frame.

[0008]

Operation: A truck for a pipe propulsion device is arranged on a rail laid in the starting shaft, and the rear end of the pipe is fixed to the front surface of the frame provided on the truck so that it cannot rotate. When a reaction force is applied to the rear wall surface and the rear surface of the frame is pushed forward by the propulsion jack, the tubular body is pressed into the ground while being prevented from rolling. In addition, when the next pipe is connected to the press-fitted pipe and sequentially propelled, if rolling occurs in the connected pipe in the ground, the frame is rotated around the pipe axis and the rolling is performed. Fix it.

Further, when the tubular body is propelled, when the tubular body is press-fitted in a state in which the tubular body is inclined with respect to the propulsion planning line, that is, in a state in which the propulsive direction is deviated, the tubular body is attached to the frame The jack being extended is extended to bring its rod end into contact with the front wall surface of the starting shaft, and a reaction force is applied to the front wall surface to retract the frame by extending the jack. By retreating this frame, the pipe body whose rear end is fixed to the relevant frame is pulled out, the propulsion direction is corrected, and then the bogie is advanced again to propel and bury it.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. FIGS. 1 and 2 show a tubular body propulsion apparatus A, in which reference numeral 1 is a flat rectangular carriage, and an appropriate gap is provided on the upper surface thereof. The rectangular plate-shaped contact frame 2 is disposed vertically, and the tilting jacks 3 and 3 are connected between both side surfaces of the contact frame 2 and the trolley 1 to connect the jacks 3 and 3. A rolling prevention / correction means for rotating the frame 2 by an appropriate angle about the tube axis of the propulsion tube P by the expansion / contraction operation is configured. The frame 2 is formed as a hollow frame in which a front wall plate and a rear wall plate are integrally formed by a peripheral wall plate, and a reinforcing member for connecting front and rear wall faces is provided inside the frame. A measurement hole 4 having an appropriate diameter is formed in the central portion of the front and rear wall plates in a penetrating state.

Reference numeral 5 denotes an annular pipe end receiving and projecting plate integrally fixed to the periphery of the surveying hole 4 formed at the center of the front wall plate of the frame 2 with the surveying hole 4 as the center. Is connected to the surveying hole 4, and a plurality of bolt holes 6 communicating from the front side to the inside of the frame 2 are bored at regular intervals in the circumferential direction. Further, one bolt hole (in the figure, Is provided with a pin 7 having an appropriate height instead of the bolt hole located at the bottom. Reference numeral 8 denotes a pipe receiving member which is curved in an arc shape and which receives the lower portion of the outer peripheral portion of the rear end of the pipe P, and is integrally provided on the lower portion of the front surface of the frame 2. Reference numeral 9 denotes jacks for pulling out tubular bodies mounted on both sides of the frame 2, the rear ends of which are fixed to the frame 2 in a penetrating state so as to project from the front surface of the frame 2 toward the front. 9a
Is a rod of the jack, to which a spreader 9b is integrally attached.

Numeral 10 is a two-rail rail laid in the bottom of the starting shaft B in the tube propelling direction, on which the carriage 1 of the tube propulsion apparatus A is movably installed. Further, these rails 10, 10 are fixed to the center of the upper surface of a fixed base 11 made of I-shaped steel, and the L-shaped vertically extending from both side end surfaces of the carriage 1 on the lower surface of the upper flange portion of the fixed base 11. The tip of the fall-prevention metal fittings 12, 12 is brought close to or in sliding contact with the locked state to prevent the tubular body propulsion device A from falling. 13,
Reference numeral 13 denotes a plurality of propulsion jacks that are supported in a penetrating state in the front-rear direction by a support member 14 that is integrally installed on the rear part of the fixed base 11. As shown in FIG. The front end surface of the rod, which is received by the reaction force wall 15 of the rear wall surface and projects forward from the support member 14, is brought into contact with the rear surface of the frame 2 of the tubular propulsion device A.

A case where the tubular body consisting of the temporary pipe P ₁ is buried between the starting shaft B and the reaching shaft C by using the tubular body propulsion apparatus A constructed as described above will be described. P ₁ is press-fitted into the ground by the pipe propulsion device A in a state where a front pipe for ground excavation (not shown) is connected to the front end side of the pipe, and the next temporary pipe P ₁ is a temporary pipe. Subsequent to the pipe P ₁ , the pipe propulsion device A sequentially propels and burys it in the ground. As shown in FIGS. 4 and 5, the temporary pipe P ₁ has an annular flange 16 integrally fixed to the inner peripheral edges of the front and rear open ends thereof, and the flange 16 has the above-mentioned tubular body propulsion device A Bolt mounting holes 17 are provided at portions that can match the bolt holes 6 formed in the pipe receiving projection plate 5.
It has a structure in which is provided at regular intervals in the circumferential direction.

In order to propel and bury this temporary pipe P ₁ into the ground from the starting shaft B side by the tubular body propulsion device A, first,
After the rear end of P ₁ is supported on the pipe receiving member 8 and the center thereof is made to coincide with the center of the pipe receiving projection plate 5, the temporary pipe P ₁
The lowest bolt mounting hole 17 formed in the flange 16 of the above is fitted to the pin 7 projecting from the lower end of the tubular body receiving projection plate 5, and the other bolt mounting hole 17 is received in the tubular body. Bolt hole 6 of the veneer 5
To match. The bolt holes 6 and the bolt mounting holes 17 do not necessarily have to be provided at the same pitch.
The bolt holes 6 of the tubular body receiving and projecting plate 5 may be provided at every several pitches of the bolt mounting holes 17.

In this way, after the bolt holes 6 and the bolt mounting holes 17 are aligned with each other, the surveying holes 4 are used from the rear surface side of the frame 2 to connect the bolt holes 6 and the bolt mounting holes 17 with each other.
Fix with a nut, and fix the rear end face of the temporary pipe P ₁ to the pipe receiving projection plate 5
It is fixed integrally while being in contact with the front surface of.

In this state, the reaction wall in the starting shaft 1
When the rod of the propulsion jack 13 supported by 15 is extended, the tubular body propulsion device A whose tip end surface is in contact
The present frame 2 is pushed forward and the carriage 1 provided with the relevant frame 2 advances on the rail 10 to propel the temporary pipe P _{1 received} on the front face of the present frame 2 into the ground. At this time, since the rear end of the temporary pipe P ₁ is integrally fixed to the tubular body receiving projection plate 5 of the frame 2,
It is possible to prevent the temporary pipe P ₁ from rolling during the propulsion by supporting it on the carriage 1 via the both side jacks 3 and 3 of the frame 2.

[0017] Promotion of the temporary pipe P _1, the buried installation is completed, after the temporary pipe P ₁ which is embedded a front flange 16 of the temporary pipe P ₁ should then embedded in retracting the tube propulsion device A above The end flange 16 is joined and the bolt mounting holes 17, 17 are connected and integrated by bolts and nuts, while the rear end flange 16 is connected and integrated with the tubular body receiving projection plate 5 of the frame 2 in the same manner as above. After the, again promoting the temporary pipe P _1, embedded, in the same manner the temporary pipe P ₁
Starting from vertical shaft B to reaching vertical shaft C
Up to a large number of temporary pipes P ₁ are buried in a state of being connected in series.

[0018] In embedded in construction of the temporary pipe P _1, if the rolling in temporary pipe P ₁ in promoting ground occurs, the cart 1 and Towaku 2
When one of the tilting jacks 3, 3 connecting the two side portions of and is actuated in the extension direction and the other in the contraction direction, the frame 2 rotates in the circumferential direction of the temporary pipe P ₁ and hits. The rearmost temporary pipe P ₁ fixed to the tubular body receiving projection plate 5 of the frame 2 rotates integrally,
Rolling is corrected through this temporary pipe P ₁ .

Further, the propulsion of the temporary pipe P ₁ by the pipe propulsion device A,
During embedding, if the deviation in the propulsion direction of the provisional pipe P ₁ with respect to promotion plan line of the temporary pipe P ₁ is press-fitted in the state caused to actuate the pulling jack 9 that is attached to those frame 2 Once the temporary pipe P ₁ is pulled out, it is embedded in the predetermined propulsion direction. That is, after the rod of the propulsion jack 13 is contracted to separate its tip end surface from the present frame 2 to the rear side, the rods 9a of the extraction jacks 9 and 9 mounted on both sides of the present frame 2 are extended. When the spreader 9b at the front end is brought into contact with the front wall surface of the starting shaft B and is further extended from that state, the front wall surface of the starting shaft B receives the reaction force and the extension amount of the rod 9a is changed. The trolley 1 moves backward, and the temporary pipe P ₁ connected to the frame 2 is pulled out. After withdrawal of the temporary pipe P _1, then a modification of the propulsion direction of the temporary pipe P ₁ causes contraction of the jack 9, 9, again, promote the carriage 1 is moved forward by the propulsion jacks 13 of the temporary pipe P _1, buried Is to do.

[0020] Thus, after embedded in a state in which both shafts B, the Karikan P ₁ between C are coupled in series form, then, to be laid on the rear end of the temporary tube P ₁ of the last portion of the starting pit B side The front end of the perforated pipe P ₂ is connected and the perforated pipe P ₂ is propelled and buried by the pipe propulsion device A. As shown in FIGS. 6 and 7, the perforated pipe P ₂ has a plurality of through holes for wiring or water passage therein.
18 has a ring-shaped collar 19 of a constant width protruding and fixed to the outer peripheral edge of the rear end thereof, and further has an outer diameter at which the collar 19 can be fitted on the outer peripheral edge of the front end surface. It has a structure in which the peripheral step portion 20 is integrally provided and pin holes 21 and 22 having appropriate depths are formed in the outer peripheral portions of the front and rear end faces. As such a perforated pipe P ₂ , a fume pipe formed by penetrating a plurality of through holes 18 in parallel in a concrete formed body has been exemplified, but a plurality of pipes are formed in the pipe body whose both end openings are closed by circular closing plates. The small diameter pipes may be arranged, and the front and rear ends of these small diameter pipes may be fixed to the front and rear closing plates in a penetrating state.

The connection of the rear end face of the temporary pipe P ₁ of the last section and the perforated pipe P ₂ of the front end face is leave projecting pins (not shown) to the rear end flange of the provisional pipe P ₁ , The pin is inserted into the pin hole 21 formed in the front end surface of the perforated pipe P ₂ . Further, at the rear end of the perforated pipe P ₂ , the collar 19 is fitted to the disc-shaped tubular body receiving projection plate 5 of the frame 2, and the pin 7 protruding from the receiving projection plate 5 at the time of the fitting is perforated. The pipe P ₂ is fitted into the rear end pin hole 22, and the lower peripheral portion of the collar 19 is received by the pipe receiving member 8. Also, jacks 3 and 3 on both sides
The frame 2 is fixed so that it cannot be rocked.

After the rear end of the perforated pipe P ₂ is connected to the receiving projection plate 5 of the frame 2 of the tubular propulsion device A as described above, the propelling jack 13 is extended to move the bogie 1 forward. tube
P ₂ is press-fitted into the ground, and the temporary pipe P ₁ is pushed into the shaft on the side of the reaching shaft C according to the press-fitting. At this time, the temporary pipe
P ₁ is configured to be extruded while being supported by a rolling prevention device D provided in the reaching shaft C.

This rolling prevention device D is provided with a reaching shaft C.
Upper and lower rails 23, 23 fixed between the front and rear wall surfaces of the shaft in the state of being erected in the tube body propelling direction in the upper and lower parts of the shaft, and the front end flange 16 of the temporary pipe P ₁ which is detachably connected by a bolt. It comprises a ring 24, trolleys 25, 25 movably locked to the upper and lower rails 23, 23, and jacks 26, 26 connecting between both sides of the fixing ring 24. Also, the temporary tube at the end P ₁
A vertical needle 27 such as a plumb bob is hung from the upper end of the inner surface of the, and an imager 28 such as a TV camera that projects the vertical needle 27 is fixed on the inner surface of the temporary tube P ₁ on the front side of the vertical needle 27. The operator is able to confirm the deflection angle of the projected vertical needle 27 in the circumferential direction of the temporary pipe in the vertical shaft.

According to the propulsion of the tubular propulsion device A, the perforated pipe P ₂
There together make embedded in embedded track of the temporary pipe P _1, the temporary tube foremost P ₁
Is pushed into the reaching shaft C, and according to the pushing,
The rolling prevention device D prevents the temporary pipe P ₁ from rolling due to the tension or tension of the jack 26 while advancing along the rail 19.

When a single perforated pipe P ₂ is driven and embedded after the temporary pipe P ₁ from the starting shaft B side, the bogie 1 is moved backward and the perforated frame 2 of the bogie 1 and the perforated pipe are embedded. between the rear end surface of the pipe P ₂ is interposed the next perforated pipe P _2, provided on the front and rear end surfaces with fitting the opposed perforated pipe P _2, collar 19 and Shudan portion 20 of the front and rear end portions of the P ₂ that By inserting a pin (not shown) between the pin holes 21 and 22 which are present, the two porous tubes P ₂ and P ₂ are integrally joined and connected, and the rear end of the rear porous tube P ₂ is attached to the frame 2 To accept in the same manner as above. On the other hand, on the side of the reaching shaft, the extruded temporary pipe P ₁
Is removed, and the fixing ring 24 of the rolling prevention device D is attached to the front end face of the next temporary pipe P _{1 in} the same manner as above.

[0026] Thus, extruded Karikan P ₁ in the arrival pit C to promote perforated pipe P ₂ again, both the vertical shaft B by repeating this operation, C perforated pipe temporary pipe P ₁ embedded between P It replaces with ₂ . At this time, the temporary pipe P ₁ and the perforated pipe P ₂ may roll during the propulsion toward the reaching shaft C in the ground, but the rolling amount and the direction thereof are the final temporary pipe.
From the deflection angle and deflection direction of the vertical needle 27, such as plumb bob, which is hung vertically from the upper end of the inner surface of P ₁ , it is detected and displayed on the vertical shafts B, C through the imager 28, and the rolling prevention device is set in the compatible shafts B, C. By operating the jacks 3 and 26, the rolling is corrected.

FIG. 8 shows another embodiment of the tubular body propulsion apparatus A. In the above-mentioned embodiment, an annular receiving projection plate 5 for receiving the tubular body such as the temporary pipe P ₁ is provided on the frame 2. It was formed integrally with
In this embodiment, the frame 2'is integrally fixed on the carriage 1 and the receiving projection plate 5'is rotatably arranged on the front surface of the frame 2'by a jack 3 '. That is, the rear edge of this frame 2'is bent inward to form a ring-shaped locking piece 31, and the locking piece 31 is attached to a circular rail 32 protruding from the front surface of the frame 2 '. It is rotatably locked and the front surface of the frame 2'and the outer periphery of the receiving projection plate 5'prevents rolling, and a correction jack.
It is connected by 3 '. The other structure is similar to that of the above-mentioned embodiment.

[0028]

As described above, according to the pipe propulsion device of the present invention, the pipe body is mounted on the carriage that is movable in the propelling direction of the pipe body to receive the rear end surface of the pipe body and fix the pipe body so that it cannot rotate. In a tubular body propulsion device in which a frame is disposed and a rear surface of the frame is pushed by a propulsion jack to propel and bury the pipe body in the ground, a jack for preventing and correcting rolling of the pipe body in the frame. It is characterized in that it is equipped with a means such as etc. and a jack for pulling out the pipe body that protrudes in the propulsion direction is attached to the relevant frame, so it prevents rolling when propelling and burying the pipe body in the ground. However, it can be press-fitted securely, and if rolling occurs, it can be easily corrected by rotating the rear end receiving portion of the pipe body, so that the position of the pipe body in the circumferential direction is aligned. Can be accurately propelled and buried in a closed state.

Further, when the tubular body is pushed, when the tubular body is pushed in with the propelling direction deviated from the planned line, the jack mounted on the frame is extended. The rod end is brought into contact with the front wall surface of the starting shaft, etc., the reaction force is applied to the front wall surface, and the truck can be easily retracted by the extension of the jack. The pipe body can be pulled out, and therefore, after the pipe body is pulled out, the propulsion direction is corrected and the pipe body is propelled again by the forward movement of the trolley so that the pipe body can be accurately embedded in the planned line.

[Brief description of drawings]

FIG. 1 is a side view of the entire device with a partial cross section,

FIG. 2 is a front view thereof,

FIG. 3 is a simplified side view showing a temporary pipe embedded state,

FIG. 4 is a front view of the temporary pipe,

FIG. 5 is a side view in which a part is longitudinally cut,

FIG. 6 is a rear view of the tubular body,

FIG. 7 is a side view thereof,

FIG. 8 is a partial cross-sectional side view showing another embodiment of the present invention.

[Explanation of symbols]

 1 trolley 2 This frame 3 Tilt jack 5 Tube receiving plate 7 Pin 9 Jack for extraction 13 Propulsion jack

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location F16L 1/024

Claims (1)

[Claims] 1. A frame for receiving the rear end surface of the tubular body and fixing it non-rotatably is provided on a carriage installed movably in the propulsion direction of the tubular body, and the rear surface of the frame is pressed by a propulsion jack. In the tubular body propulsion device that propels and buryes the tubular body in the ground, a jack or other means for preventing or correcting the rolling of the tubular body is provided in this frame, and the frame is projected toward the propulsion direction. A tubular body propulsion device, which is equipped with a jack for extracting the tubular body.