JP4410006B2 - Hollow pipe for sand pile construction, connecting device attaching / detaching device, and telescopic device for hollow pipe for sand pile construction - Google Patents

Description

  The present invention relates to a sand pile building hollow pipe for forming a foundation pile building hole in the ground for ground improvement work, etc., and to easily extend and contract the sand pile building hollow pipe in a short time. The present invention relates to a sand pile building hollow tube, a connecting tool attaching / detaching device, and a sand pile building hollow tube expansion / contraction device.

  In the ground improvement work such as the seabed, in order to harden the soft ground such as sand, the hollow pipe (casing pipe) for sand pile formation is blown and rotated while being pushed into the ground to form an excavation hole . These sand pile building hollow pipes are connected and separated from each other at the connecting portions at both ends so that they can expand and contract.

  By the way, in ground improvement work using sand pile driving vessels such as expansion work of existing airports facing the sea off Haneda etc., there is a height restriction due to takeoff and landing of aircraft, and a hollow pipe for sand pile formation Will be limited in length. Therefore, it is necessary to expand and contract the long sand pile forming hollow pipe at the start and end of the sand pile driving operation for each excavation hole.

Conventionally, this sand pile building hollow pipe is used for excavation with a short pipe of about 10m connected in the axial direction, and its connecting part is fixed to each other with bolts and nuts or connecting plates. It is possible to connect and separate the sand pile building hollow pipe at the part (for example, Patent Documents 1 and 2).
Japanese Utility Model Publication No. 49-23604 JP-A-8-218761

  When the sand pile building hollow tube is tightened and connected with bolts and nuts, the sand pile building hollow tube having a length of about 10 m when the sand pile building hollow tube is expanded or contracted After alignment, it is necessary to tighten or remove about 20 places on the circumference of the flange with a diameter of around 1 m using a torque wrench with bolts and nuts, and the manual work takes time and labor, and is complicated. The cost is increasing, which is the cause of the cost of ground improvement work. In addition, there is a disadvantage that bolts and nuts are deformed or damaged due to excessive load when placing a hollow pipe for sand pile construction, especially in ground improvement work in the sea area where height is restricted. Development of technology that reliably performs expansion and contraction work for hollow tubes in a short time is desired.

  The present invention firmly connects the hollow pipes for sand pile construction, and can perform the expansion, contraction and retracting operations of the sand piles easily, safely, reliably and automatically by remote operation in a short time. An object of the present invention is to provide a hollow pipe for sand pile construction, a connecting / detaching device for the same, and a telescopic device for the hollow pipe for sand pile construction.

The invention according to claim 1 is a sand pile forming hollow pipe that is axially coupled to each other at a connecting portion, and the sand pile forming hollow pipe has thick flange portions at both ends. , a plurality of half-hole which is open towards the center of the hollow tube from the outer peripheral side to the spacing at the outer peripheral portion of the flange portion on the side surface of the flange portion, and arranged at symmetrical positions of the flange portions, wherein The half hole portion has a wide portion inward in the axial direction of the hollow tube, and has a slope that becomes narrower toward the center of the flange portion. It is a hollow pipe for sand pile formation characterized by providing the wedge-shaped connector inserted in the hole formed by the part.

According to the sand pile forming hollow tube having the above-described configuration, the flange portion having a hole portion formed in the flange portion at both ends of the hollow tube and a wedge-shaped connector inserted in the hole portion and aligned in the axial direction. against the hole portion having a wide portion in the axial direction which is formed by the semi-holes on the circumference, by or pulling it pushes the wedge-like connecting component inscribed thereto, connecting the hollow tube, the separation in a short period of time This can be performed reliably, and the flange portion can be tightened with a high tightening force generated by the frictional resistance between the inclination of the inner surface of the hole and the side surface of the wedge-shaped connector, and a strong connection strength can be obtained.

The invention according to claim 2 is a connecting device attaching / detaching device for connecting or separating the sand pile forming hollow pipe according to the invention, wherein the flange portions of the two sand pile forming hollow pipes are combined. for the hole formed by the semi-hole with the flange portions by a connector attachment apparatus of fit of the wedge-like connecting component inserted or pulled disconnect was Ku having a shape corresponding to the hole portion, wherein A holder for holding the wedge-shaped coupler, connection means for connecting the wedge-shaped coupler and the holder, and a holder for holding the wedge-shaped coupler for moving the holder with respect to the hole. It is a connection tool attaching / detaching apparatus characterized by including a moving means.

  According to the coupling tool attaching / detaching device of the present invention, in a state where the holding tool holds the wedge-shaped coupling tool, the moving means moves back and forth with respect to the hole portion opened in the flange portion, and the coupling tool is inserted and pulled out. Since the connecting means is attached to and detached from the holder by the connecting means, the manual work of attaching and detaching the wedge-shaped connecting tool from the connection and separation work of the sand pile building hollow pipe is reduced, and labor and work time are reduced. Can be shortened and work safety can be improved.

  The invention according to claim 3 is characterized in that the wedge-shaped coupling tool includes a locking hole opened from the back surface of the coupling tool, and a locking portion including a space portion having a diameter larger than the locking hole on the front surface side of the locking hole. And the holding tool comprises a rod that can be inserted into the locking hole having an end having a large-diameter holding part that engages with the locking part of the wedge-shaped connecting tool, and the connecting means includes the holding part. The coupling tool attaching / detaching device according to claim 2, wherein the connecting means is a cylinder device including a rod having the holding portion.

  According to this coupling tool attaching / detaching device, the wedge-shaped coupling tool has the locking hole and the locking part, and the holding tool has a large-diameter holding part that is locked to the locking part, thereby holding the coupling tool. The work of attaching to or disconnecting from the tool becomes extremely simple, greatly reducing the labor for handling the connector and ensuring the holding of the connector. In addition, by attaching / detaching the wedge-shaped coupling tool to / from the hole with a rotary drive device or cylinder device, it becomes easy to attach / detach the wedge-shaped coupling tool to / from the holder, and the sand pipe construction hollow tube can be expanded and contracted. This improves the safety and enhances safety, and the cylinder device inserts the connector into the hole with a predetermined pushing force to strengthen the connection and easily pull out the wedge-shaped connector during separation. To do.

Invention according to claim 4, connected or separated Sunakui hollow tube for reclamation according to claim 1, a Shin contraction device for storing, coupler releasably according to claim 2 or 3 coupling for detachable device will be arranged to correspond to the hole portion formed by aligning the flange portion of the sand pile Construction hollow tube two, the wedge-like connecting component to the flange portion A tool mounting / demounting base; a sand pile forming hollow tube holding base for mounting the connecting tool mounting / demounting base and holding the sand pile forming hollow tube; and a moving base for mounting and moving the holding base. A sand pile building hollow pipe connecting device, a sand rail building hollow tube connecting device movably mounted thereon, a moving means thereof, and a sand tower for storing the sand pile building hollow tube. It is composed of a storage device for hollow pipes for sand pile construction provided. An expansion device Sunakui Construction hollow tube.

  In the expansion and contraction device for a sand pile forming hollow pipe according to the present invention, as described in claim 5, in the connecting device for the sand pile forming hollow tube, the connecting tool detachable mount includes a plurality of the connecting tools. A pair of position adjusting stands having an opening through which the sand pile forming hollow pipe is inserted, and a hole in the flange portion that is fitted to the position adjusting stand and is capable of rotating the position adjusting stand. And a pair of moving pedestals having an annular rail for adjusting the position of the coupling tool attaching / detaching device so as to correspond to a portion, and having an opening for inserting the hollow pipe for sand pile formation, And a roller and a moving means for moving the moving stand in one body or in a divided state, and the holding stand for the sand pipe forming hollow tube is capable of moving the pair of connecting / dismounting mounts. A pair of mounts to be mounted, the hollow pipe for sand pile formation A frame that has a holding portion that is rotatably held, has a roller that can move the gantry into a single unit or in a divided state, and a moving unit thereof, and the moving gantry mounts the holding gantry to be movable The frame body may be provided with a moving roller and a support frame for positioning the sand pile forming hollow tube.

  According to the sand pipe building hollow tube expansion / contraction device of the present invention, the wedge pile connecting tool is inserted into the flange hole portion, and the sand pile building hollow tube is connected and separated by pulling out. A series of expansion and contraction operations of the sand pile forming hollow tube such as moving the pipe and storing the sand pile forming hollow tube are easily performed.

  Invention of Claim 6 is equipped with the automatic operation apparatus which carries out remote operation of each work process, It is an expansion-contraction apparatus of the hollow pipe for sand pile formation of Claim 4 or 5 characterized by the above-mentioned.

  According to the present invention, it is possible to automatically operate all the telescopic work such as connection and separation of the sand pile building hollow pipe, movement and storage of the sand pile building hollow pipe from a remote location. Automation, manpower saving, and work safety can be improved without requiring work at high places.

  By installing the above sand pile building hollow tube expansion and contraction device on a sand pile driving ship, the sand pile building hollow tube can be expanded and contracted in a short time even in ground improvement work in coastal areas with height restrictions. This makes it possible to easily carry out the work, ensuring construction safety, shortening the time and reducing costs.

  As described above, according to the present invention, by automatically connecting, separating, moving and storing the sand pile forming hollow pipe, the sand pile forming hollow pipe can be expanded and contracted very easily in a short time. It is possible to save the work time, labor and work cost by releasing the conventional manual work. In addition, it does not require work at a high place, and by adopting remote automatic operation, it can greatly reduce labor and improve safety, and has the excellent effect of shortening the construction period and reducing costs. is doing.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a side view in which a part of the embodiment of the sand pile forming hollow tube 100 is omitted, FIG. 2 is a partially enlarged view of a side surface of the flange portion, FIG. 3 is a bottom view of the flange portion, and FIG. FIG. 5 is a side view of the flange part in which the hollow pipes 100 for sand pile formation are aligned at the flange part, and the hole parts are formed at equal intervals in the flange part side face corresponding to each half hole part. It is line sectional drawing.

  The sand pile forming hollow tube 100 is composed of a steel hollow tube 101 having a main body of 800 to 1000 mm in diameter and about 10 m in length, and steel having a thickness of about 210 mm and a ridge width of about 120 mm at both ends of the hollow tube 101. The flange portion 102 is welded.

As shown in the figure, the flange portion 102 is a half-hole portion whose cross section is opened over the entire thickness in the flange portion radial direction from the outer peripheral side surface toward the center portion of the hollow tube 101 on the side surface of the flange portion. Te, wide portion 110a axially inwardly of the hollow tube 101 has a 111a, and the flange portion a predetermined angle of inclination 110b, different semi-hole of the cross-sectional shape 110 which have a 111b to the center direction becomes width narrow And 111 are alternately provided at equal intervals on the outer periphery of the flange portion 102. The half hole portions 110 and 111 are also provided with the same shape half hole portions 110 and 111 at symmetrical positions of the other flange portion 102.

As shown in FIG. 4, two sand pipes forming hollow pipes 100 are aligned with the half hole portions 110 and 111 of the flange portion 102, and the flange portions 102 of the two are aligned vertically. It is a so-called laterally substantially H-shaped shape that is vertically symmetrical in the direction of the hollow tube axis that is wide at the outer side of the cross-section by the half-hole portions 110 and 111 of the flange portion and narrow at the flange connection portion, and in the depth direction The vertical hole portions 120 and 121 having a narrow width at a predetermined inclination angle can be alternately formed on the periphery of the side surface of the flange portion at equal intervals.

  These holes may all have the same shape on the circumference of the flange 120, but as shown in the figure, the holes 120 and 121 having different shapes are formed alternately in the circumferential direction, as will be described later. It is preferable from the viewpoint of securing the uniformity of tightening and securing the connection between the two to prevent looseness.

  FIG. 6 shows a wedge-shaped connector 1 (hereinafter, wedge-shaped connector is simply referred to as a wedge) inserted into the hole 120, (a) is a rear view, (b) is a side view thereof, and (c) is a side view. FIG. 7 is a top view, and FIG. 7 is a rear view of the wedge 2 having a different shape.

  The wedges 1 and 2 are inserted into the holes 120 and 121 formed by the two upper and lower flange portions 102 and 102, and firmly connect the upper and lower hollow pipes 100 and 100 for sand pile formation. Therefore, the wedges 1 and 2 and the holes 120 and 121 need to be correlated and surely combined.

  Therefore, the wedges 1 and 2 can be easily inserted into and pulled out from the holes 120 and 121, and after insertion with a constant pushing force, frictional resistance is generated between the inclined surfaces of the two, and sand piles are being formed. In order to firmly connect the hollow tubes, it is important to have a cross-sectional shape corresponding to the inner surface shape of the hole portions 120 and 121 and a side surface inclination.

  As shown in FIG. 6, the wedge 1 is a wedge-shaped body having a substantially H-shaped cross section corresponding to the hole 120 and a trapezoidal cross section, and an inclined surface 11 corresponding to the side surface inclination 110 b of the hole 120. And the wedge 1 is inserted into the hole 120 with a predetermined pushing force, thereby generating a frictional resistance between the inclined surface 110b of the hole and the inclined surface 11 of the wedge. The connection between the upper and lower sand pile forming hollow tubes 100, 100 can be strengthened by tightening between the flange portions 102, 102.

  The wedge 2 shown in FIG. 7 is different from the wedge 1 in shape and size, has a cross section corresponding to the hole 121 and a side slope, and exhibits the same tightening effect as the wedge 1 described above.

  This frictional resistance prevents the flange portion 102 from being loosened by vibration or impact during the sand pile placing operation, and the wedges 1 and 2 are prevented from falling out of the holes 120 and 121, and the sand pile forming hollow tube When the length is reduced to 100, the wedges 1 and 2 can be easily pulled out, and the sand pile building hollow tube can be easily separated.

  Also, as shown in the figure, the holes 120 and 121 having different shapes are alternately provided on the circumference of the flange portion 102, and the wedges 1 and 2 corresponding thereto are used, so that the distribution of the tightening force due to the wedge is increased on the circumference of the flange portion 102. Therefore, it is possible to improve the effect of preventing loosening against vibrations and impacts caused by the placing work.

  The wedges 1 and 2 are provided with gripping portions for gripping the wedges, and can be easily inserted into and extracted from the holes 120 and 121.

  As shown in FIGS. 6 and 7, the wedges 1 and 2 are provided with locking holes 12 and 22 that are opened from the back surface of the wedge, and a space larger in diameter than the locking hole is formed on the front side of the locking holes 12 and 22. The locking parts 13 and 23 which consist of a part are provided.

In the case of the locking hole 12, the through hole 14 has a substantially elliptical cross section, and the locking part 13 is formed of a space portion having a circular cross section having substantially the same diameter as the elliptical major axis of the through hole 14 provided on the front surface side. this for the locking hole 12, can be inserted into the through hole 14 of the chromatic vital the locking hole 12 in the end portion of the holding portion of large diameter to engage the locking portion 13 to grip the wedge 1,2 A later-described holding tool 31 made of a simple rod is used. The same applies to the case of the locking hole 22.

  In addition to the above, the gripping portion can be a projection that protrudes outward from the back of the wedge, or a projection provided with a gripping hole in the projection, and is not particularly limited. A corresponding gripping tool may be used together.

  Further, as shown in FIG. 8, it is possible to use a fall prevention device for preventing slippage and dropout after the insertion of the wedges 1 and 2, for example, a fall prevention device 15 using a spring and a steel ball. The drop prevention device 15 is attached to the portion 102, and the concave support portions 103 for receiving and supporting the steel balls pressed by the springs on the upper and lower surfaces of the wedges 1 and 2 may be provided.

  FIG. 9 shows expansion and contraction for connecting or separating the two upper and lower sand pile forming hollow pipes 100 and 100 by inserting and extracting the wedges 1 and 2 from the holes 120 and 121 on the circumference of the flange 102. 1 shows a schematic configuration of a wedge attaching / detaching device 3 used for work.

  As shown in the figure, the wedge attachment / detachment device 3 includes a holder 31 that holds the wedges 1 and 2, a hydraulic cylinder 33 that moves the holder 31 at the tip of the cylinder rod 36 in the axial direction, and the cylinder rod 36. The holder 31 is rotated by a rotary arm 38 and is configured by a rotating hydraulic cylinder 32 that attaches or detaches the wedges 1 and 2 to / from the holder 31, and is disposed on the base plate 37.

  In place of the hydraulic cylinder 33, a pneumatic cylinder or an electric cylinder can be used. However, it is preferable to use a hydraulic cylinder in order to secure the pushing force and the pulling force of the wedges 1 and 2, and the rotating cylinder other than the rotating hydraulic cylinder 32 is also used. Pneumatic cylinders and rotating electric cylinders can also be used.

  The holder 31 for holding the wedges 1 and 2 is inserted into the locking holes 12 and 22 having a substantially elliptical cross section of the wedges 1 and 2, and is engaged for holding the wedges 1 and 2 at the locking portions 13 and 23. A portion 34 is provided at the tip, and is provided at the tip of the cylinder rod 36 of the hydraulic cylinder 33. The holder 31 may be detachable from the tip of the cylinder rod 36.

  FIG. 10 shows the distal end portion of the holder 31, and before insertion of the holder 31 into the locking hole 12, the elliptical major axis direction of the engaging portion 34 is vertically arranged (shown by a solid line) and has a substantially elliptical cross section. The hole 34 can be inserted into the locking hole 12, and after the insertion, the retainer 31 is rotated 90 ° (indicated by a one-dot chain line) by the rotating hydraulic cylinder 32, so that the engaging portion 34 is a wedge-locking portion. 13 is used to hold the wedge 1, the rotation of the rotary hydraulic cylinder 32 rotates the angle of the engagement portion 34 by 90 °, and the engagement portion 34 is attached to and detached from the locking portion 13. 31 can be attached or detached.

  FIG. 11 shows a state in which the holder 31 is inserted into the locking hole 12, and its engaging portion 34 is locked to the locking portion 13 of the wedge to hold the wedge 1. Can be held.

  The wedge attaching / detaching device 3 moves the wedges 1 and 2 with respect to the flange portion by driving the hydraulic cylinder 33, and the wedges 1 and 2 are inserted into the holes 120 and 121 when the sand pile forming hollow pipe 100 is connected. The hollow pile 100 for sand pile formation can be expanded and contracted by inserting the wedges 1 and 2 from the holes 120 and 121 during the separation.

  FIGS. 12 to 14 schematically illustrate the operation of inserting the wedges 1 and 2 into the holes 120 and 121 by the wedge attaching / detaching device 3. FIG. 12 shows a state before insertion into the hole of the wedge 1. A holder 31 is inserted into the locking hole 12 of the wedge 1, and a rotary arm 38 connected to the rotary hydraulic cylinder 32 moves the cylinder rod 36 about. By rotating 90 °, the engaging portion 34 at the tip of the holder 31 is locked to the locking portion 13 and the wedge 1 is held.

  Next, as shown in FIG. 13, the cylinder rod 36 is pushed out by the drive of the hydraulic cylinder 33, and the holder 31 advances into the hole 120 of the flange portion 102 while holding the wedge 1. The wedge 1 is inserted into the hole 120 with a pushing force. When the insertion operation is completed, the rotary arm 38 of the rotary hydraulic cylinder 32 reverses the cylinder rod 36 by about 90 ° so that the engaging portion 34 of the holder 31 can be pulled out from the locking portion 13 of the wedge 1.

  Then, as shown in FIG. 14, the cylinder rod 36 of the hydraulic cylinder 33 is retracted, the engaging portion 34 is disconnected from the wedge 1, the holder 31 is stored in the cylinder side of the wedge attaching / detaching device 3, and the connecting operation is completed.

  By performing this connection operation on the holes 120 and 121 on the circumference of the flange portion 102, the connection of the upper and lower sand pile forming hollow tubes 100 is completed.

  In the case of shortening the sand pile forming hollow tube 100, the wedges 1 and 2 may be pulled out from the flange portion 102 of the sand pile forming hollow tube 100 in the reverse order to the above.

[First embodiment of expansion and contraction device of sand pipe hollow tube]
FIGS. 15 to 27 are schematic views illustrating the configuration of the sand pile building hollow tube expansion / contraction device 10 according to the first embodiment having a plurality of the wedge attachment / detachment devices 3.

As shown in FIG. 27, the sand pile building hollow tube expansion / contraction device 10 is a sand pile building hollow for connecting or separating two sand pile building hollow tubes 100 at their flanges 102. The pipe connecting device 20, the moving rail 8 for moving the sand pile forming hollow tube 100 together with the connecting device 20, and the storage device 9 for storing the sand pile forming hollow tube 100 are provided. It is a device that performs a series of expansion and contraction operations of the hollow tube 100, and is normally installed on the carriage 200 and used.

As shown in FIG. 24, the sand pile building hollow pipe connecting device 20 includes a pair of wedge position adjusting frames 4 including a plurality of wedge attaching / detaching devices 3 and a wedge on which the wedge position adjusting frames 4 are rotatably mounted. A wedge connection frame 50 composed of a movable frame 5, a sand pile formation hollow tube holding frame 6 for holding the sand pile formation hollow tube 100, and a main body frame of the connection device 20, the entire connection device 20. Are moved in the front-rear direction, and a support frame 75 for positioning the sand pile forming hollow tube 100 and preventing vibration during placement.

  As shown in FIG. 15, the wedge position adjusting gantry 4 is provided with a semicircular opening 45 so that the sand pile building hollow tube 100 can be inserted through the center portion, and a pair of gantry-shaped semi-annular gantry Each of the four wedge attachment / detachment devices 3 on 41 is adjusted to a horizontal position corresponding to the hole portion 120 of the flange portion 102, and is fixed at a predetermined position at 45 ° intervals toward the center of the ring 1. On the bottom surface side of the gantry 41, a fitting portion 42 that fits on a rail 53 of the wedge moving gantry 5 described later is provided in the circumferential direction, and the wedge position provided on the wedge moving gantry 5 at the peripheral portion of the gantry 41. A position adjusting plate 43 connected to the adjusting cylinder 57 is provided to protrude outward.

  In the case of the figure, a total of eight wedge attaching / detaching devices 3 are arranged so as to correspond to the eight hole portions 120 of the flange portion 102, but the wedge attaching / detaching devices 3 are not necessarily associated with all the hole portions 120. There is no need to arrange them, and they may be arranged by increasing or decreasing appropriately.

  The wedge moving gantry 5 shown in FIG. 16 is provided with a semicircular opening 56 through which the sand pile building hollow tube 100 can be inserted through the center, and a semi-annular shape on a rectangular plate 56 provided in the gantry frame 55. It comprises a pair of mounts 51 provided with an annular rail 53 and a support frame 52. The annular rail 53 and the support frame 52 are formed in an annular shape by connecting both ends when the mount 5 is integrated. Can be rotated.

  In the gantry 51, a position adjustment cylinder 57 connected to a position adjustment plate 43 for rotating the gantry 41 on the annular rail 53 is installed outside the support frame 52, and the gantry 51 is moved in the left-right direction. And a moving cylinder (not shown) as a moving means for the pedestal for bringing the pedestals 51 and 51 into an integrated or divided state, and a plurality of moving rollers 54 are provided on the bottom side of the pedestal frame 55. .

  The wedge position adjusting gantry 4 has protrusions 42a on both sides of the fitting portion 42 provided on the bottom side thereof fitted into the annular rail 53, and the gantry 41 is supported on the support frame 52 so that the rail 53 can be rotated. Then, as shown in FIG. 17, it is incorporated into the wedge moving stand 5 to constitute a wedge attaching / detaching stand 50.

  Then, a pair of wedge detachable mounts 50 move in the left-right direction toward the center by a moving cylinder (not shown) as a moving means of the wedge detachable mount 50, and as shown in FIG. 100 is sandwiched and fixed. Next, the wedge moving mount 4 is rotated through the position adjusting plate 43 by driving the position adjusting cylinder 57, and each wedge attaching / detaching device 3 is aligned with each hole 120 of the sand pile forming hollow pipe 100, and the flange The wedge 1 is attached to and detached from the hole 120 of the portion 102, and the sand pile forming hollow tube 100 is connected and separated.

  The sand pile building hollow tube holding rack 6 for holding the sand pile building hollow tube 100 shown in FIG. 19 has a valley-shaped opening 63 through which the sand pile building hollow tube 100 can be inserted through the center. And a pair of substantially rectangular pedestals 61 provided on the pedestal frame 62, moving the pedestal 61 in the left-right direction to move the pedestals 61, 61 into an integrated or divided state. (Not shown), and a plurality of moving rollers 66 are provided on the bottom surface side of the gantry frame 62. And the holding | maintenance rotation plate 64 which clamps the hollow pipe 100 for sand pile formation from both sides is provided in the valley bottom part of the said valley-shaped opening part 63. As shown in FIG.

  The holding rotation plate 64 is formed to be movable in the left-right direction at the bottom of the valley so that it can be rotated while holding the sand pile forming hollow tube 100, and the rotating cylinder 65 shown in FIG. And is connected to the plate 64 via the plate 64 so as to be rotatable.

  As shown in FIG. 20, the holding rotating plate 64 holds the bottom surface side of the flange portion 102 of the lower sand pile forming hollow tube 100 when connecting the upper and lower sand pile forming hollow tubes 100. The half holes 110 of the upper and lower flange portions 102 are made to coincide with each other.

  When the pair of wedge detachable mounts 50 and the sand pile forming hollow tube holding mount 6 are integrated and fixed, for example, a clamp device provided on one of the mounts 51a as shown in FIG. The left and right mounts can be fixed by driving the hooks 48 with the cylinder 47 and locking the hooks 48 with the locking portions 49 provided on the other mount 51b (FIG. 21 shows the case of the wedge detachable mount 50). As shown, it can be similarly applied to the holding rack 6 of the hollow pipe for sand pile formation).

  A moving gantry 7 shown in FIG. 22 serves as a body frame of the sand pile forming hollow tube coupling device 20, and is a gantry that mounts the wedge detachable gantry 50 and moves the entire linking device 20 in the front-rear direction. Yes, as shown in the figure, it consists of a frame 71 formed of H-shaped steel and a plurality of rollers 72 fixed on the bottom surface side of the frame 71 for moving on the moving rail 8. Is provided with a support frame 75 for supporting the sand pile forming hollow tube 100 during the placement of the sand pile forming hollow tube 100 and preventing displacement and runout.

  A support frame 75 shown in FIG. 23 includes a support body 76 that is sandwiched from the left and right direction of the sand pile building hollow tube 100 and a support body 77 that is sandwiched from the front and rear direction, and the moving frame 79b supports the fixed frame 79a. It moves in the left-right direction together with the body 76 to support the sand pile building hollow tube 100.

  The wedge detachable gantry 50, the sand pile forming hollow tube holding frame 6, the movable frame 7 and the support frame 75 are incorporated, and the sand pile forming hollow tube connecting device 20 shown in FIG. 24 is assembled.

  As shown in FIG. 25, the moving rail 8 is mounted with the connecting device 20 and moves between the connecting position and the retracted position of the sand pile forming hollow pipe 100. Two moving rails 81 to be moved and a plurality (six in the figure) of hydraulic cylinders 82 built in the rail 81 are provided. A flat plate 83 that forms the same surface as the upper surface 81 a of the rail 81 is attached to the rod tip of the hydraulic cylinder 82, and an opening 84 for the flat plate 83 to form the same surface as the rail 81 is provided on the rail upper surface. 81a is opened. Further, a vehicle stopper 85 for positioning the connecting device 20 at the connecting position is provided at the terminal end side of the rail 81, that is, the end of the rail 81 on the leader 201 side.

  At the time of placing the sand pile forming hollow tube 100, as shown in the enlarged view of part A of FIG. 25 of FIG. 26, the connecting device 20 is arranged at the connecting position where the sand pile forming hollow tube 100 is located at the center. The roller 72 of the frame 71 is mounted on the flat plate 83 and stored in the rail 81 through the opening 84, and the connecting device 20 is fixed by mounting the frame 71 directly on the rail 81, that is, The movable mount 7 is also used as a fixing device at the time of placing. Further, when the connecting device 20 is moved, the connecting device 20 is pushed up so that the flat plate 83 at the end of the rod forms the same surface as the rail upper surface 81a, and the roller 72 is put on the rail 81 so that the connecting device 20 is moved in the front-rear direction. Make it movable. The movement of the connecting device 20 is performed by a moving winch 202 provided on a carriage 201 in front of the connecting device 20.

  As shown in FIG. 27, the sand pile building hollow tube storage device 9 stores the sand pile building hollow tube 100 separated by the sand pile building hollow tube connecting device 20 in the tower 91. The tower 91 is formed by four pillars erected at the storage position of the sand pile forming hollow tube 100 on one end side of the moving rail 8 in front of the carriage 200, and is provided above the tower 91. A suspension pulley 92 for lifting the sand pile building hollow tube 100 and a lifting winch 93 on the carriage 200 are used. The lower sand pile building hollow tube 100b is separated by using a wire rope 94. And store it in the tower 91.

  Next, using the schematic diagram of the telescopic device 10 shown in FIG. 28 to FIG. 31 for the operation steps for separating and storing the sand pile forming hollow tube 100 by the sand pile forming hollow tube connecting device 20 and the storage device 9. I will explain.

  FIG. 28 shows the sand pile building hollow tube 100 at the end of the operation, FIG. 29 shows the separation operation, FIG. 30 shows the movement of the connecting device 20, and FIG. 31 shows the sand pile building hollow tube 100 stored. Is shown.

Step-1: After the placement work, the sand pile building hollow pipe 100 is lifted by the leader 201 and pulled up from the sea. (Fig. 28)
Step-2: After moving and integrating the holding pile 6 of the sand pile building hollow tube in the axial direction of the sand pile building hollow tube 100, the left and right mounts are fixed with clamps for fixation (see FIG. 21). Fix it. (Fig. 29 (b))
Step-3: Place the flange portion 102 of the lower sand pile forming hollow pipe 100b on the holding frame 6 and hold it by the holding rotation plate 64 of the frame (FIG. 29 (b)).
Step-4: The connecting device 20 is moved and integrated in the axial direction of the sand pile forming hollow tube 100, and the left and right mounts are fixed with fixing clamps (see FIG. 21). (FIG. 29 (c))
Step-5: The left and right wedge position adjustment bases 4 are rotated by the position adjustment cylinders 53 so that the wedge positions of the respective wedge attaching / detaching devices 3 and the flange portions 102 are matched. (See FIG. 29 (c))
Step-6: The wedge is held by the holder 31 of the wedge attaching / detaching device 3, and all the wedges are extracted and the upper and lower sand pile forming hollow tubes 100a, 100b are separated. (See FIG. 29 (c))
Step-7: The separated upper sand pile hollow tube 100a is lifted by the leader 201. (Fig. 29 (a) arrow)
Step-8: The connecting device 20 is pushed up by the hydraulic cylinder 82 in the moving rail 81 so that the cylinder rod flat plate 84 and the rail upper surface 81a are flush with each other, and the moving roller 72 of the connecting device 20 is placed on the rail upper surface 81a. (See FIGS. 29 (a) and 26)
Step-9: In the state where the lower sand pile forming hollow pipe 100b is held by the holding frame 6, the connecting device 20 is pulled to the front of the carriage 200 by the winch 202 and moved to the storage position at the center of the tower 91. . (Fig. 30 (a))
Step-10: The fixing clamp of the connecting device 20 is released (FIG. 21), and the connecting device 20 is moved outward. (FIG. 30 (c))
Step-11: After setting the lifting wire rope 64 on the upper part of the sand pile building hollow pipe 100b, the fixing clamp of the sand pile building hollow pipe holding frame 6 is released (FIG. 21), and the sand pile building is performed. The hollow tube holding frame 6 is moved outward. (Fig. 31 (b))
Step-12: The wire rope 64 is wound up by the lifting winch 93 and the sand pile forming hollow tube 100b is lifted up to the top of the tower 91. (Fig. 31 (a))
Step-13: The sand pile building hollow tube 100b is stored in the tower 91 and secured. (Fig. 31)

  When connecting and extending the sand pile forming hollow pipe 100, it can be carried out in an operation step reverse to the above procedure.

  The operation of connecting, separating, and storing the sand pile forming hollow pipe 100 by the sand pile forming hollow pipe connecting apparatus 20 preferably includes an automatic operation device that remotely controls each work process. It is possible to safely carry out the telescopic work of the sand pile building hollow pipe while minimizing the operator's entry into the vicinity of the connecting device 20 and the tower 91 during wedge connection by automatic operation.

  As a result, all the work of connecting and separating the sand pile building hollow pipe can be changed from manual work to automatic work, and the work safety is improved by saving labor and further remote automatic operation. , It can contribute to the reduction of work costs.

[Second embodiment of expansion and contraction device for hollow pipe for sand pile construction]
FIGS. 32 to 39 are schematic views showing the sand pile building hollow tube expansion / contraction device 70 of the second embodiment having a plurality of the wedge detaching devices 3.

As shown in FIG. 37 , the sand pile building hollow tube expansion / contraction device 70 includes a first moving frame 104 on which the wedge attaching / detaching device 3 is arranged, a second moving frame 105 on which the first moving frame is mounted and moved, A hollow tube holding / moving device which has a sand pile forming hollow tube connecting device 60 comprising a moving device 161 disposed on the platform 106 and is a pedestal for holding and moving the sand pile forming hollow tube 100. A connecting device 60, a hollow tube holding and moving device 107, and a storage device 109 for storing the separated sand pile forming hollow tube 100, a moving rail, a roller, a hydraulic cylinder, etc. And moving means.

As shown in FIGS . 32 to 35 , the wedge attachment / detachment device 3 is mounted on a pair of first movable mounts 104, and each wedge attachment / detachment device 3 is positioned at a position corresponding to the holes 120 and 121 of the flange portion 102. It is arranged and used on a support base 141 for adjusting the height. Further, a wedge support base 142 for installing the wedges 1 and 2 held by the holder 31 is provided.

  As shown in FIG. 32, the connecting device 60 includes a moving device 161 including a roller device 163 fixed to the work platform 106 and a moving rail 162 connected to the second moving frame 105 sandwiched between the rollers 163. The second moving gantry 105 is provided. The second moving gantry 105 moves the first moving gantry 104 to a position surrounding the flange portion 102.

  The first moving gantry 104 is mounted on the second moving gantry 105 by sandwiching the moving rail 143 between a roller 144 provided on the moving rail 143 provided on the gantry and a roller 152 provided on the second moving gantry 105. 144, 152, a moving rail 143, and a hydraulic cylinder 153 provided on the second moving pedestal 105. A pair of pedestals that are supported by the second moving pedestal 105 by the moving device 151 and can be extended from the second moving pedestal 105. The first moving gantry 104 is arranged on the second moving gantry 105, and the pair of gantry can be integrated and divided.

  As shown in FIG. 33 to FIG. 35, the first movable mount 104 is provided with a plurality of wedge attaching / detaching devices 3, and each attaching / detaching device 3 is inserted into each of the hole portions 120, 121 when attaching / detaching the wedges 1, 2. The pair of gantry 104 is moved to the central portion by the moving device 151 around the flange portion 102 so as to correspond to each other, and when not working, the pair of pedestals 104 are moved to both sides to be in a divided state. The flange portion 102 can be retracted and stored.

  FIG. 33 shows a state in which the first mobile gantry 104 in a divided state when not being operated is stored on the second mobile gantry 105 side, and work such as maintenance is performed on the work platform 106.

  FIG. 34 shows a state in which the first moving gantry 104 is extended by the moving device 161 from the second moving pedestal 105 to a position surrounding the flange portion 102 in a divided state, and FIG. 35 shows the first moving gantry 104 moved by the moving device 151. The wedge detachment devices 3 (eight in the figure) are moved to the central portion on the rail 143 and integrated, and are arranged at positions corresponding to the respective hole portions 120 and 121 of the flange portion 102.

  The movements of the moving devices 151 and 161 include the combination of the rails 143 and 162 and the rollers 144, 152, and 163 provided on the moving bases 104 and 105 and the platform 106, and the moving hydraulic cylinder 153 (the hydraulic cylinder of the moving device 161 is (Not shown).

  Further, the sand pile building hollow tube expansion / contraction device 70 moves to a predetermined connecting position while holding the upper and lower portions of the sand pile building hollow tube 100 as shown in the schematic diagram of FIG. A hollow tube holding and moving device 107, which is a pedestal that is moved to store the sand pile building hollow tube 100, is provided.

  The hollow tube holding and moving device 107 includes a moving base 171 and a moving rail 173 each having a roller 172, and the moving base 171 mounted on the moving rail 173 is extended. The sand pile building hollow pipe 100 is held from both sides by a hydraulic jack device 174 provided at the tip of the movable base 171 and is fed out or stored at a specified position. At the same time, the hydraulic jack device 174 has upper and lower flange portions. The sand pile forming hollow pipe 100 is lifted and connected and separated so as to provide a gap of about 50 mm therebetween.

  FIG. 36 (a) shows a state in which the movable frame 171 is stored in the movable rail 173, and FIG. 36 (b) shows a state in which the movable frame 171 is drawn out to the connecting position of the flange portion 102 while holding the sand pile forming hollow tube 100. (C) is sectional drawing of (b), hold | maintains the sand pile formation hollow tube 100 with the hydraulic jack apparatus 174, pays out the movable mount 171 from the moving rail 173, and connects the sand pile formation hollow tube 100 to a connection position. The state supported by is shown.

  The hollow tube holding and moving device 107 also supports the moving frame 171 by the same roller 172 and moving rail 173 as the first and second moving frames 104 and 105, and moves the moving frame 171 by the moving hydraulic cylinder 175. Is done.

  37 to 39 show the sand pile forming hollow pipe connecting device 60 on the tower 191 having a work platform 106 provided at the top and bottom of the sand pile forming hollow tube expansion / contraction device 70. Is a schematic view of an expansion / contraction device 70 provided with a storage device 109 made of a tower structure in which two sets of the wedge attachment / detachment device 3 are arranged and stored at a height corresponding to the upper and lower flange portions 102 of the hollow pipe 100 for sand pile formation. is there.

  As shown in FIG. 38, at the time of connecting and separating the sand pile forming hollow pipe 100, the second movable frame 105 is fed from the tower 191 to a position corresponding to the flange portion 102, and the second movable frame 105 is in a divided state. By integrating the moving base 104, each wedge attaching / detaching device 3 corresponds to each hole 120, 121 of the flange portion 102, and the wedges 1, 2 held by the holder 31 are inserted into the holes 120, 121. Alternatively, the hollow pipe holding and moving device 107 holds the two upper and lower portions of the sand pile forming hollow pipe 100 at four points during this time, and the sand pile forming hollow pipe 100 is expanded and contracted.

  In the figure, the hollow tube holding and moving device 107 holds the sand pile forming hollow tube 100 at two locations, but it is easy to improve the stability and position of the sand pile forming hollow tube 100 being held. In order to do this, the hollow tube holding and moving device 107 may be provided also in the intermediate portion.

  Except during the telescopic work, as shown in FIG. 39, the first moving gantry 104 can be divided and the second moving gantry 105 can be retracted, and the entire coupling device 60 can be stored in the tower 191. It can be stored in a state where it does not become an obstacle to the placing work and the separated hollow tube 100 for sand pile formation is held.

  The sand pile building hollow tube storage device 109 has two sets of connecting devices 60, and can perform a series of connecting and separating operations simultaneously or continuously at two flange portions at the top and bottom, The work efficiency is improved, the work time is shortened, and the apparatus is made compact.

  Also in this sand pile building hollow tube expansion / contraction device 70, it is preferable that the sand pile building hollow tube connecting device 60 and its moving and storing device 109 include an automatic operation device for remotely operating each work process. The telescopic operation can be performed more safely and efficiently without an operator entering the vicinity of the coupling device 60 or the tower 191 by remote automatic operation.

  The above-described expansion and contraction devices 10 and 70 for sand pile construction are mounted on a sand pile driving ship and used for driving work, so that sand piles can be used for ground improvement work in coastal sea areas where height is limited. The expansion and contraction work of the forming hollow tube can be easily performed in a short time, and the construction safety can be improved, the construction period can be shortened and the cost can be reduced.

  INDUSTRIAL APPLICABILITY The present invention is used for placing work such as a sand pile building hollow pipe and a drain material in a sand pile placing ship.

It is a side view of the hollow pipe for sand pile formation of an embodiment. It is a partially expanded side view of a flange part same as the above. It is a bottom face schematic diagram of a flange part. It is an enlarged side view which shows the hole formed in the flange part of embodiment. It is the sectional view on the AA line of FIG. It is the rear view, side view, and top view of the wedge of embodiment. It is a rear view which shows the example of another wedge. It is the schematic of a wedge fall prevention apparatus. It is the side view and top view which show the outline of a wedge attachment / detachment apparatus. It is the side view and front view which show the front-end | tip part of a wedge holder. It is a wedge front view which shows a holding state. It is the schematic which shows operation | movement of a wedge attachment / detachment apparatus (before insertion). Same as above (when inserted). Same as above (after insertion is complete). It is the top view and side view which show the wedge position adjustment mount frame concerning the expansion-contraction apparatus of 1st Embodiment. It is the top view and side view which show a wedge movement mount frame. It is the top view and side view which show a wedge detachable mount. It is a top view which shows the time of integration same as the above. It is the top view and side view which show the hollow pipe holding frame for sand pile construction. It is the top view and side view which show the time of integration same as the above. It is the schematic of the clamp apparatus which fixes a right-and-left base. It is the top view and side view of a mobile stand. It is the top view and side view which show the support frame of the hollow pipe for sand pile construction. It is a side view which shows the connection apparatus of the hollow pipe for sand pile construction. It is the top view and side view which show a movement rail. It is the A section enlarged view of FIG. It is a side view which shows the hollow pipe storage apparatus for sand pile construction. It is the side view and top view at the time of completion | finish of the placement work of an expansion-contraction apparatus. It is the side view and top view at the time of separation work same as the above. It is the side view and top view at the time of a movement same as the above. It is the side view at the time of storage of the hollow pipe for sand pile construction, and a top view. It is a side view which shows the outline of the connection apparatus which concerns on the expansion-contraction apparatus of 2nd Embodiment. It is a plane schematic diagram which shows a movement state same as the above (at the time of storage). Same as above (when extended). Same as above (when attaching / detaching). It is the plane and side schematic diagram which show the movement state of a hollow tube holding | maintenance moving apparatus. It is a schematic side view of the expansion-contraction apparatus of 2nd Embodiment. Same as above (when connecting and separating). Same as above (when stored).

Explanation of symbols

1, 2 ... Wedge 3 ... Wedge attachment / detachment device 4 ... Wedge position adjustment stand 5 ... Wedge moving stand 6 ... Hollow pipe holding stand for sand pile formation 7 ... Moving stand (frame)
8 ... Moving rail 9, 109 ... Sand pile construction hollow tube storage device 10, 70 ... Sand pile construction hollow tube expansion device 12, 22 ... Locking hole 13, 23 ... Locking portion 20 , 60 …… Hollow pipe connecting device for sand pile construction 31 …… Holding tool 32 …… Rotating hydraulic cylinder 33 …… Hydraulic cylinder 34 …… engagement part 50 …… Wedge detachable mount 75 …… Support frame 91,191 ...... Yagura 100 …… Hollow pipe for sand pile construction 102 …… Flange portion 110,111 …… Half hole portion 120,121 …… Hole portion 110a, 111a …… Half hole portion wide portion 110b, 111b …… Half hole Inclination of the inner surface 200 …… Boat

Claims (6)

A sand pile building hollow pipe connected to each other in the axial direction at a connecting portion,
Hollow tube for the sand pile reclamation has a thickness flange portion at both ends, a plurality of half-hole which is opened from the outer peripheral side toward the central portion of the hollow tube in a side surface of the flange portion Provided at equal intervals on the outer periphery of the flange, and at symmetrical positions of both flanges,
The half hole portion has a wide portion inward in the axial direction of the hollow tube, and has a slope that becomes narrow toward the center of the flange portion,
A sand pile building hollow pipe, comprising a wedge-shaped connector inserted into a hole formed by a half hole portion of both flange portions by combining the flange portions. It is a connection tool attachment or detachment apparatus for making the said hollow pipe for sand pile formation of Claim 1 connected or separable, Comprising: By combining the said flange part of two hollow pipes for sand pile formation for the hole formed by the semi-hole with the flange portions, a connector attachment apparatus of fit of the wedge-like connecting component inserted or pulled disconnect was Ku having a shape corresponding to the hole portion,
A holder for holding the wedge-shaped coupler, a connecting means for connecting the wedge-shaped coupler and the holder, and a holder for holding the wedge-shaped coupler for moving the holder with respect to the hole. A connecting device attaching / detaching device comprising: a moving means. The wedge-shaped connector has a locking hole opened from the back surface of the connector, and a locking portion formed of a space portion having a diameter larger than the locking hole on the front surface side of the locking hole,
The holder is composed of a rod that can be inserted into the locking hole having an end portion having a large-diameter holding portion that is locked to the locking portion of the wedge-shaped connecting tool,
The connection means comprises a rotation drive device that rotates the holding portion,
The connecting device attaching / detaching device according to claim 2, wherein the moving unit includes a cylinder device including a rod having the holding portion. Connected or separated Sunakui hollow tube for reclamation according to claim 1, a Shin contraction device for storing,
Will be arranged so as to correspond to the hole portion formed by aligning the flange portion of the connector attachment apparatus two said sand pile Construction hollow tube according to claim 2 or 3, wherein the wedge-shaped connecting A connecting tool attaching / detaching base for attaching / detaching a tool to / from the flange part, a holding base for the sand pile forming hollow tube for mounting the connecting tool attaching / detaching base and holding the sand pile forming hollow tube, A connecting device for a hollow pipe for sand pile formation comprising a moving gantry mounted with a holding gantry,
A moving rail for movably mounting the connecting device of the sand pile forming hollow tube and its moving means, and a storage device for the sand pile forming hollow tube comprising a tower for storing the sand pile forming hollow tube A hollow pipe expansion and contraction device for sand pile construction characterized by comprising: In the sand pile building hollow pipe connecting device,
The connecting tool detachable mount is provided with a plurality of the connecting tool attaching / detaching devices, and has a pair of position adjusting mounts having an opening through which the sand pile forming hollow pipe is inserted, and the position adjusting mount is fitted to the position adjusting mount. It has an annular rail for adjusting the position of the coupling tool attaching / detaching device so that the adjustment frame can be rotated and corresponds to the hole portion of the flange portion, and has an opening for inserting the hollow pipe for sand pile formation Comprising a pair of moving mounts, and a roller and a moving means for moving the moving mounts in a single body or in a divided state together with the position adjusting mount,
The holding base of the sand pile forming hollow tube is a pair of mounts for movably mounting the pair of coupling tool mounting and dismounting bases, and a holding portion for rotatably holding the sand pile forming hollow tube A roller that can move the gantry into a single body or in a divided state, and a moving means thereof,
The moving pedestal is composed of a frame that movably mounts the holding pedestal, the moving frame is provided with a moving roller, and a support frame for positioning the sand pile forming hollow tube is provided. The expansion / contraction apparatus of the hollow pipe for sand pile formation of Claim 4. An automatic operation device for remotely operating each work process is provided. The sand pipe pile hollow tube expansion and contraction device according to claim 4 or 5.

Images