JP6693818B2 - Embedded pipe installation method and embedded pipe cutting and installation device used for this - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an embedded pipe cutting and installation device for installing a new embedded pipe on a hearth floor for raising a coke oven, and a method for installing a new embedded pipe using these devices.

  The heat storage chamber of the coke oven introduces the combustion exhaust gas from the combustion chamber to remove heat, and the heat increases the temperature of the fuel or air supplied to the upper combustion chamber. A large number of pipes for supplying fuel and air are arranged in a row in the heat storage chamber, and these pipes are arranged at predetermined pitch intervals as embedded pipes in the hearth floor of the combustion chamber.

  In order to change the structure of the existing hearth floor, it is necessary to raise the concrete slab of the hearth floor and to install a new embedded pipe (steel pipe) accordingly. In that case, first cut the root of the existing embedded pipe that is exposed from the slab surface, and then use a sheath pipe etc. to make an embedded pipe (new embedded pipe) of a length corresponding to the raised amount of the concrete slab. The embedding pipe referred to is installed and installed on the existing embedding pipe.

Examples of this type of steel pipe cutting device include a steel pipe cutting machine described in Patent Document 1, a steel pipe pile cutting device attachment described in Patent Document 2, or a steel pipe pile cutting device described in Patent Document 3. Are known.
Further, as a method of installing the embedded pipe, a method of installing the embedded pipe described in Patent Document 4 is known.

JP, 2002-210611, A JP, 11-188526, A JP, 2005-307627, A JP, 10-152987, A

  However, in the conventional cutting device according to Patent Document 1 or the like, when the steel pipe or the steel pipe pile is inclined with respect to the steel pipe embedding surface (ground surface (GL surface) or concrete surface), the cutting surface of the steel pipe is the GL surface. Does not become flat against Further, the method of installing embedded pipes according to Patent Document 4 or the like cannot be directly applied to the raising of a concrete slab, and in the past, it is practically possible to install a large number of embedded pipes efficiently and with high accuracy. It was difficult.

  In view of such circumstances, it is an object of the present invention to efficiently and highly accurately install a new embedded pipe.

  The embedded pipe installation method of the present invention is such that a plurality of existing embedded pipes lined up on an existing slab of the hearth floor to be raised are flat-cut parallel to the embedded surface, and the existing slab is The movable carriage is supported on a temporary rail laid along a predetermined direction above, and a template having an insertion hole that matches the existing embedding pipe is mounted on the movable carriage and cut to the predetermined existing embedding. Move the movable carriage to the insert pipe, insert a new embedded pipe through the insertion hole of the template and fit into the existing embedded pipe, and fix the new embedded pipe on the existing slab, The moving dolly is moved away from the fixed new embedded pipe, and concrete is placed on the existing slab to raise the hearth floor.

  Further, in the method for installing an embedded pipe according to the present invention, a socket is attached to the charging hole, and the new embedded pipe is charged through the socket.

  Further, in the embedded pipe installation method of the present invention, the socket is removed from the template after the new embedded pipe is fixed.

  Further, in the method for installing an embedded pipe according to the present invention, the new embedded pipe is fitted onto the existing embedded pipe and then fixed on the existing slab by a quick-drying grout or a fixing member.

  The embedded pipe cutting device of the present invention is an embedded pipe cutting device for cutting existing embedded pipes arranged on an existing slab, and is mounted on an arm rotatably supported on a base. Drive motor, a cutter attached to the output shaft of the drive motor and rotating on the lower surface of the base, and positioning and fixing means for the existing embedded pipe, and the existing embedded pipe is embedded therein. It is characterized by flat cutting parallel to the plane.

  Further, the embedded pipe cutting device of the present invention is characterized in that it is provided with a position adjusting mechanism for performing height adjustment, leveling and the like of the base.

  Further, the embedded pipe installation device of the present invention is an embedded pipe installation device for installing a new embedded pipe on an existing embedded pipe arranged on an existing slab, and is installed on the existing slab. A movable carriage that is movably supported on a temporary rail, and a template that has a charging hole for the new embedded pipe that matches the existing embedded pipe and that is mounted on the movable carriage are cut and cut. The movable carriage is moved to a predetermined existing embedded pipe, and the new embedded pipe is inserted through the insertion hole of the template and fitted into the existing embedded pipe.

  Further, in the embedded pipe installation device of the present invention, the movable carriage is movable in a predetermined direction after the new embedded pipe is fitted into the existing embedded pipe.

Moreover, in the embedded pipe installation device of the present invention, the embedded pipe has a socket attached to the insertion hole of the template, and the socket can be detached after the new embedded pipe is inserted from the insertion hole.
Further, in the embedded pipe installation device of the present invention, the movable carriage has a roller adjustment bolt on a frame member, and the position and level of the template can be adjusted even after the movable carriage is fixed. And

According to the present invention, a large number of existing embedded pipes can be efficiently cut by the embedded pipe cutting device, and a quick cutting operation can be performed. The existing embedding pipe is flat cut parallel to the embedding surface. Then, when the new embedded pipe is fitted from above the existing embedded pipe, a smooth installation work can be ensured.
In addition, in the embedded pipe installation device, a large number of new embedded pipes can be efficiently installed and a quick installation work can be performed while the movable carriage is traveling on the guide rail. In this case, the new embedded pipe can be properly and smoothly installed using the template and the socket.

It is a figure which shows the example of the coke oven which raises according to the embodiment of this invention. It is a top view which shows typically the arrangement | positioning structure etc. of the hearth floor of the coke oven and embedded pipe installation apparatus which concern on embodiment of this invention. It is a perspective view showing an embedded pipe cutting device in an embodiment of the present invention. It is a top view of the embedded pipe cutting device in the embodiment of the present invention. It is a side view of the embedded pipe cutting device in the embodiment of the present invention. FIG. 3 is a perspective view showing a moving carriage arranged on an existing slab of the coke oven according to the embodiment of the present invention. It is a top view and a front view showing an example of composition of a mobile truck in an embodiment of the present invention. It is a side view showing the example of composition of the mobile truck in the embodiment of the present invention. It is a figure which shows the example of a structure of the traveling wheel and guide rail of the mobile truck in embodiment of this invention, respectively. It is a figure which shows typically the injection | pouring process of the new embedded pipe in embodiment of this invention. It is a perspective view of the socket which concerns on embodiment of this invention. It is a figure which each shows the structural example of the socket which concerns on embodiment of this invention. It is a figure which shows typically the anchor fixing process of the new embedding pipe | tube in embodiment of this invention. It is a figure which shows the main processes in the installation method of the new embedded pipe in embodiment of this invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
In the embodiment of the present invention, for example, an aging coke oven as shown in FIG. 1 is dismantled, and a new furnace body is constructed on the same existing foundation part (hearth floor 1) at the same scale. Concrete is poured into the hearth floor 1 of No. 1 and the bulk is raised. In this case, in the coke oven, as shown in FIG. 2 (A), many existing embedded pipes 3 are lined up on the existing slab 2 of the hearth base 1. The existing slab 2 is in the furnace length direction between the PS (Pusher Side) and CS (Coke Side) (in this example, the X direction in FIG. 2A), and in the furnace group length direction (Y direction in FIG. 2A). Along a very wide area.

  In the present invention, first, the existing embedded pipe 3 embedded in the existing slab 2 is flatly cut at a predetermined height position from the embedded surface in the vertical direction. FIG. 3 shows an embedded pipe cutting device 10 for cutting the existing embedded pipe 3. 4 is a top view of the embedded pipe cutting device 10, and FIG. 5 is a side view thereof. In the embedded pipe cutting device 10, an arm 13 is supported on a base 11 so as to be rotatable around a support shaft 12, and a grip 14 is gripped to move the arm 13 in a substantially horizontal direction as indicated by an arrow A in FIG. Can be rotated. An electric motor 15 (driving motor) is mounted on a substantially central portion of the arm 13, an output shaft 16 thereof projects from the lower surface of the base 11 as shown in FIG. 5, and a cutter 17 is attached to the output shaft 16. The electric motor 15 may be a geared motor or the like, and the output shaft 16 can be set in the gear portion thereof. Further, a hand switch for starting or stopping the electric motor 15 is attached at an appropriate position of the grip 14 so that the electric motor 15 can be ON / OFF controlled appropriately. A notch 18 is formed for allowing the output shaft 16 to pass when the arm 13 rotates.

  In this example, the base 11 has a rectangular shape, and an opening portion 19 for inserting the existing embedded pipe 3 is formed at one end side thereof, and the rear portion of the opening portion 19 receives the existing embedded pipe 3. A receiving portion 20 is provided upright to integrally position and support the cutter 17 for cutting. In the present example, the pair of receiving portions 20 are arranged, for example, in a V shape or at an angle close to a right angle so that the receiving portion 20 makes two-point contact with the outer periphery of the existing embedded pipe 3. A clamp 22 around which a tightening wire 21 for fixing the existing embedded pipe 3 is stretched is provided near the receiving portion 20. Positioning and fixing means for the existing embedded pipe 3 is configured including the receiving portion 20, the wire 21, the clamp 22, and the like. A removable protective cover 23 may be attached to the opening 19.

  A plurality of (four in four corners in this example) adjust bolts 24 are screwed onto the corners of the base 11, and these adjust bolts 24 constitute a position adjusting mechanism of the embedded pipe cutting device 10. The height of the base 11 and the leveling can be adjusted by appropriately adjusting the adjusting bolt 24. In that case, for example, the leveler 25 may be mounted on the protective cover 23.

  In the above case, for example, the pair of casters 26 can be attached to one end side of the rectangular shape of the base 11 and the handle 27 can be attached to the other end side. Before and after the cutting operation of the existing embedded pipe 3, the embedded pipe cutting device 10 can be appropriately moved on the existing slab 2 by the caster 26 while holding the handle 27.

  When cutting the existing embedded pipe 3, the embedded pipe cutting device 10 is moved to the existing embedded pipe 3 and brought into contact with the receiving portion 20. In this case, the existing embedded pipe 3 may be temporarily fixed by the clamp 22 via the wire 21. The base 14 is leveled by adjusting the adjust bolt 24 appropriately, and the existing embedded pipe 3 is finally fixed by the clamp 22. By operating the electric motor 15 and rotating the arm 13 as shown by an arrow A in FIG. 4, the existing embedded pipe 3 can be cut by the cutter 17. At that time, since the electric motor 15 is mounted via the arm 13 supported by the leveled-out base 11, the cutter 17 flat-cuts the existing embedded pipe 3 in parallel with the embedded surface. You can

  Next, a new embedded pipe is installed to the existing embedded pipe 3 cut into a predetermined length as described above. An embedded pipe installation device 30 for installing a new embedded pipe is used as schematically shown in FIG. 2 (B). As shown in FIG. 6, the embedded pipe installation device 30 includes a movable carriage 31 which is horizontally mounted on the existing slab 2 in the furnace length direction and is movable in the furnace group length direction. A plurality of guide rails 32 (temporary rails) are laid on the existing slab 2 along the length direction of the furnace group. In this example, four guide rails 32 are laid at predetermined pitch intervals in the furnace length direction, and the moving carriage 31 travels on these guide rails 32. The movable carriage 31 has a frame-shaped frame 33 that is made of a steel material such as channel steel and is elongated in the furnace length direction as shown in FIG. 7, and a template described later is mounted on the frame 33.

  More specifically, the frame 33 is formed by connecting upper and lower two-stage frame members 33A and 33B to each other, and the lower frame member 33B is movable on each guide rail 32 as shown in FIG. A total of eight running wheels 34 are attached to each. Here, as shown in FIG. 7, one of the inner guide rails 32A of the guide rails 32 and the traveling wheels 34A traveling on the guide rails 32A are different in guide structure from the other guide rails 32 with reference to FIG. Have. That is, as shown in FIG. 9A, the traveling wheel 34A is configured to sandwich the guide rail 32A from both sides, thereby preventing the traveling wheel 34A from coming off. On the other hand, the other traveling wheels 34 are placed on the guide rail 32 in FIG. 9B, but due to the position regulating action of the guide rail 32A and the traveling wheels 34A, all the traveling wheels 34 run stably without falling off. To do. The guide rails 32 (and the guide rails 32A) are laid horizontally on the existing slab 2 via anchor bolts 35 as shown in FIGS. 9 (A) and 9 (B).

  Here, as shown in FIG. 8 in the upper frame member 33A, the frame member 33a on one end side in the furnace group length direction is arranged at a position higher than the mounting surface of the template 36. As shown in FIG. 2, the template 36 has a plurality of (holes covering two kilns) charging holes 37 arranged and aligned to match the existing embedded pipe 3, and is placed on the upper frame member 33A. Is set and set. As schematically shown in FIG. 10, the new embedded pipe 4 is inserted through the insertion hole 37 and fitted from above the already cut existing embedded pipe 3. The new embedded pipe 4 has a larger diameter than the existing embedded pipe 3, and is installed so that the upper end thereof is positioned immediately near the lower surface of the template 36 set on the upper frame member 33A. By disposing the frame member 33a at a position higher than the mounting surface of the template 36 as described above, the moving carriage 31 can be moved in a predetermined direction without the new embedded pipe 4 and the frame member 33a interfering with each other. Will be possible.

  When the template 36 is set on the upper frame member 33A, it is mounted on the frame member 33A via the adjuster bolts 38 with rollers as shown in FIG. 8 or 10, so that the movable carriage 31 is fixed. The position can be adjusted vertically and horizontally afterward. After this position adjustment, the template 36 can be fixed to the upper frame member 33A by an anchor member or the like (not shown).

  Further, when the new embedded pipe 4 is inserted from the insertion hole 37 of the template 36 in the embedded pipe installation device 30, the socket 39 as shown in FIGS. 11 (A) and 11 (B) is used. The socket 39 guides the new embedding pipe 4 when it is inserted through the insertion hole 37, and temporarily holds the new embedding pipe 4 when anchoring the new embedding pipe 4 onto the existing slab 2. I'll do it. With reference to FIG. 12 in the specific configuration of the socket 39, a cylindrical portion 39a having an outer diameter that can be inserted into the charging hole 37 of the template 36 and a flange portion 39b that overlaps the template 36 are the main components, and a new embedded When the tube 4 is put into the template 36, it is attached to the template 36 in advance as shown in FIG.

  The socket 39 has a step portion 39c near the upper portion of the inner hole of the cylindrical portion 39a, and the step portion 39c is adapted to engage with a locking bar of the new embedded pipe 4 described later. A locking bar 40 is previously attached to the upper end of the new embedding pipe 4 before it is inserted into the template 36. The locking bar 40 is formed of a rod-shaped member having a length substantially equal to the inner diameter of the step 39c, and is fixed along the diameter direction of the new embedded pipe 4 by, for example, spotting. When the new embedded pipe 4 is inserted into the socket 39, the locking bar 40 engages with the step portion 39c, and the new embedded pipe 4 is locked in the socket 39 as shown in FIG. .. Further, as shown in FIG. 12C, the socket 39 is formed with a pair of slits 39d passing through the step 39c along the generatrix direction of the cylindrical portion 39a. As shown in FIG. 11 (B), the socket 39 is rotated as shown by the arrow B to align the locking bar 40 and the slit 39d, thereby disengaging the locking bar 40 and the step portion 39c. The socket 39 can be pulled up from the state of FIG. 11 (B).

  The new embedded pipe 4 put into the template 36 via the socket 39 can be anchor-fixed on the existing slab 2 via a fixing member 41 near the lower portion as shown in FIG. In this example, several rod-shaped fixing members 41 are used, one end side of each fixing member 41 is fixed to the outer peripheral surface of the new embedded pipe 4 by welding or the like, and the other end side thereof is embedded in the existing slab 2. Combined with anchor.

FIG. 14 shows the main steps in the installation method of the new embedded pipe 4 according to the present invention. In the method of the present invention, first, the existing embedded pipe 3 on the existing slab 2 is sequentially cut into a predetermined length by the embedded pipe cutting device 10.
Next, after cutting the existing embedded pipe 3, the guide rail 32 is laid on the existing slab 2 and the moving carriage 31 is transferred onto the guide rail 32.
Next, the moving carriage 31 moves to a predetermined existing embedded pipe 3, and the template 36 is mounted at a predetermined position on the upper frame material 33A.
Next, the socket 39 is attached to each of the charging holes 37 of the template 36.

Next, as shown in FIG. 14 (A), the new embedded pipe 4 is inserted through the insertion hole 37 of the template 36 via the socket 39. At this time, a locking bar 40 is attached to the upper end of the new embedded pipe 4.
Next, as shown in FIG. 14B, the new embedded pipe 4 is fitted from above the existing embedded pipe 3. In this case, a quick-drying grout 42 is installed around the root of the existing embedding pipe 3, and the quick-drying grout 42 fills the gap between the lower end of the new embedding pipe 4 and the existing slab 2 and the new embedding pipe 4 Can be fixed.
Next, as shown in FIG. 14C, the socket 39 is removed from the template 36, and thereby the moving carriage 31 is moved to the existing embedded pipe 3 where the new embedded pipe 4 is to be installed next.
Next, the new embedding pipe 4 installed as shown in FIG. 14 (D) is anchored onto the existing slab 2 via the fixing member 41.

Note that, as shown in FIG. 14 (B), it is also possible to perform anchor fixing by the fixing member 41 at the time when the new embedded pipe 4 is fitted into the existing embedded pipe 3, that is, before the movement of the moving carriage 31.
Moreover, after the installation of the new embedded pipe 4, the locking bar 40 is removed as appropriate.

  The new embedding pipes 4 are sequentially installed on all the existing embedding pipes 3 on the existing slab 2, and at this time, the new embedding pipes 4 are connected to each other via a fixing member to enhance rigidity and the like. be able to. Concrete is poured to a predetermined height position of the new embedded pipe 4, whereby the hearth bed 1 can be raised.

  According to the present invention, a large number of existing embedded pipes 3 can be efficiently cut by the embedded pipe cutting device 10, and a quick cutting operation can be performed. In this case, the existing embedding pipe 3 is flatly cut parallel to the embedding surface. After that, when the new embedded pipe 4 is fitted from above the existing embedded pipe 3, a smooth installation work can be ensured.

  Further, in the embedded pipe installation device 30, a large number of new embedded pipes 4 can be efficiently installed while the movable carriage 31 is traveling on the guide rails 32, and a quick installation work can be performed. In this case, the new embedded pipe 4 can be properly and smoothly installed using the template 36 and the socket 39.

Although the present invention has been described above with various embodiments, the present invention is not limited to these embodiments, and modifications and the like can be made within the scope of the present invention.
In the above embodiment, the number of existing embedded pipes 3 and new embedded pipes 4 and their arrangement are not limited to those in the illustrated example.

1 Hearth floor, 2 Existing slab, 3 Existing embedded pipe, 4 New embedded pipe, 10 Embedded pipe cutting device, 11 Base, 12 Support shaft, 13 Arm, 14 Grip, 15 Electric motor, 16 Output shaft, 17 Cutter, 18 Notch, 19 Opening, 20 Receiving part, 21 Wire, 22 Clamp, 23 Protective cover, 24 Adjust bolt, 25 Leveler, 26 Casters, 27 Handle, 30 Embedded pipe installation device, 31 Mobile cart, 32 Guide rails, 33 frames, 34 running wheels, 35 anchor bolts, 36 templates, 37 charging holes, 38 adjusting bolts, 39 sockets, 40 locking bars, 41 fixing members, 42 quick dry grout.

Claims (10)

Flat cutting a plurality of existing embedded pipes lined up on the existing slab of the hearth floor to be raised, parallel to the embedding surface,
While supporting the moving carriage on a temporary rail laid along the predetermined direction on the existing slab, a template having an input hole that matches the existing embedded pipe is mounted on the moving carriage,
Moving the movable carriage to the predetermined existing embedded pipe that has been cut, insert a new embedded pipe through the insertion hole of the template, and fit the existing embedded pipe,
The new embedded pipe is fixed on the existing slab, the movable carriage is moved away from the fixed new embedded pipe,
A method for installing an embedded pipe, wherein concrete is cast on the existing slab to raise the hearth floor.   The installation method for an embedded pipe according to claim 1, wherein a socket is attached to the input hole, and the new embedded pipe is input through the socket.   The method for installing an embedded pipe according to claim 2, wherein the socket is removed from the template after fixing the new embedded pipe.   The new embedding pipe is fitted onto the existing embedding pipe, and then fixed on the existing slab with a quick-drying grout or a fixing member. Built-in pipe installation method. An embedded pipe cutting device for cutting existing embedded pipes arranged on an existing slab,
A drive motor mounted on an arm rotatably supported on the base,
A cutter attached to the output shaft of the drive motor and rotating on the lower surface of the base;
Positioning and fixing means for the existing embedded pipe,
An embedding pipe cutting device, which flat-cuts the existing embedding pipe in parallel with an embedding surface thereof.   The embedded pipe cutting device according to claim 5, further comprising a position adjusting mechanism that adjusts the height of the base and leveles it. An embedded pipe installation device for installing a new embedded pipe in an existing embedded pipe arranged on an existing slab,
A moving carriage that is movably supported on a temporary rail laid on the existing slab,
A template to be mounted on the movable carriage, which has a charging hole for the new embedded pipe that matches the existing embedded pipe;
The movable carriage is moved to the predetermined existing embedded pipe that has been cut, and the new embedded pipe is inserted through the insertion hole of the template and fitted into the existing embedded pipe. Embedded pipe installation device.   8. The embedded pipe installation device according to claim 7, wherein the movable carriage is movable in a predetermined direction after the new embedded pipe is fitted into the existing embedded pipe.   9. The embedding device according to claim 7, further comprising a socket attached to the insertion hole of the template, wherein the socket can be attached / detached after the new embedding pipe is inserted from the insertion hole. Inlet pipe installation device.   10. The movable carriage has an adjusting bolt with rollers on a frame member, and the position and level of the template can be adjusted even after the movable carriage is fixed. Embedded pipe installation device described in.

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