JP2009041261A - Prefabricated concrete pile hoisting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pile hoisting device which hoists a prefabricated concrete pile for installing the pile in a pile driver when the pile is driven into the ground. <P>SOLUTION: The prefabricated concrete pile hoisting device 1 is connected to the tip of the existing concrete pile 2, and functions to hoist the existing concrete pile 2 via a hoisting wire so as to be installed in the pile driver. The pile hoisting device has a cylindrical vertically-hoisting member 3 which is fitted onto a peripheral surface of the tip of the existing concrete pile 2 and fixed to the same, and a cylindrical inclinedly-hoisting member 4 which is arranged under the vertically-hoisting member 3, and fixed to the outer periphery of the existing concrete pile 2. The vertically-hoisting member 3 has a pile fixing portion formed like an inward flange, at an edge thereof, and a vertically-hoisting fitting 6 arranged at an adequate location of the periphery thereof, for vertically-hoisting the existing concrete pile 2 having the vertically-hoisting member 3 fixed thereto. Further the inclinedly-hoisting member 4 is formed with an inclinedly-hoisting fitting 32 arranged at a deviated location on one side of the periphery thereof, for hoisting the existing concrete pile 2 in an inclined state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pile hanging device for hanging a pile when connecting the pile to a pile driving device when driving a ready-made concrete pile into the ground.

  Conventionally, when a pile is sunk using an intermediate digging method, the pile to be buried first needs to be slanted in order to connect the spiral rod inserted in the lower pile in advance to the auger drive device, Other piles need to be hung vertically to connect vertically with piles that are already buried. As a pile suspension device used at that time, there is a suspension device for lower piles and a suspension device for upper and middle piles composed of a mounting flange and a suspension fitting (Patent Document 1).

  This suspension device for lower piles is a device for suspending a pile diagonally, and as shown in FIG. 6, it is substantially the same as the cylindrical suspension metal fitting 62 fitted to the outer periphery of the pile 60, and the internal diameter of a lower pile. And a mounting flange 61 in the form of a ring having an outer diameter larger than the outer diameter of the lower pile. Then, the hanging metal fitting 62 is attached to the pile 60, and then the attachment flange 62 is attached to the upper surface of the pile head, and when the pile 60 is lifted, the hanging metal fitting 62 is reinforced so as not to come off from the pile head.

Further, the upper / middle pile suspension device is a device for vertically suspending the pile, and is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the pile 70 as shown in FIG. A suspension fitting 72 provided with a piece 71 and a mounting flange 74 formed in a ring shape having substantially the same inner diameter and outer diameter as the pile 70 and provided with a plurality of locking protrusions 73 on the outer peripheral surface portion thereof. It has. The attachment flange 74 is attached to the top surface of the pile head, and the suspension fitting 72 is mounted so that the hook 71 of the attachment fitting is engaged with the engagement protrusion 73 of the attachment flange 74.
JP 2003-166241 A

  However, in such a pile hanging device, the mounting flange 62 for the lower pile, the hanging bracket 61, the mounting flange 74 for the upper middle pile and the hanging bracket 72 have different structures, and the number of parts is large. Therefore, it takes time to manage parts and to mount parts.

  In view of such a conventional problem, the present invention has been made for the purpose of providing a pile suspension device that has a small number of parts and can be easily mounted.

  The feature of the invention described in claim 1 for solving the conventional problems as described above and achieving the intended purpose is that the ready-made concrete pile is attached to the tip of the ready-made concrete pile and the ready-made concrete pile is lifted through a suspension wire. A prefabricated concrete pile suspension device for mounting on a pile driving machine, and a cylindrical vertical suspension member fitted and fixed to the outer periphery of the tip of the prefabricated concrete pile, and a lower side of the vertical suspension member. A cylindrical inclined suspension member fitted to the outer periphery of the ready-made concrete pile, and the vertical suspension member has an inward flange-shaped pile fixing portion at an end portion, and the appropriate portion on the outer periphery. A vertical suspension bracket is provided for vertically lifting a ready-made concrete pile to which a vertical suspension member is fixed, and the inclined concrete suspension member is tilted to a position where it is shifted to one side of its outer periphery. In that an inclined hanging hanger for lifting in a state of being.

  According to a second aspect of the present invention, in addition to the configuration according to the first aspect, the vertical suspension member includes a cylindrical body and a ring-shaped flange member integrated with the front end of the body. The flange member is configured with the flange member, and a bolt insertion hole for fixing the pile is provided in the flange member at a position corresponding to the screw hole provided in the tip surface of the ready-made concrete pile. There is in being.

  According to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, the vertical suspension member is located on an outer periphery of a trunk portion, and is centered on an axis of the trunk portion. A pair of the above-described vertical hanging brackets are provided at symmetrical positions.

  According to a fourth aspect of the present invention, in addition to the configuration according to the first, second, or third aspect, the inclined suspension member has a cylindrical body portion, and the lower end side outer periphery of the body portion has the It is in the provision of a slanting suspension bracket.

  In addition to the configuration according to claim 1 or 4, the invention according to claim 5 is characterized in that an outward flange is integrally formed at each joint side end of the vertical suspension member and the inclined suspension member. The vertical suspension member and the inclined suspension member can be fixed freely by bolting between the flanges.

  According to a sixth aspect of the present invention, in addition to the configuration of the fifth aspect, a bolt insertion elongated hole having an arc shape with the same center radius as that of the body portion is provided on one of the two outward flanges. The other flange is bolted through the long hole.

  In the ready-made concrete pile hanging device according to the present invention, it is a ready-made concrete pile hanging device that is attached to the tip of the ready-made concrete pile, lifts the ready-made concrete pile through a hanging wire, and is attached to a pile driving machine, A cylindrical vertical suspension member that is fitted and fixed to the outer periphery of the head of the ready-made concrete pile, and a cylindrical inclined suspension that is under the vertical suspension member and is fitted to the outer periphery of the ready-made concrete pile. The vertical suspension member has an inward flange-shaped pile fixing portion at an end, and a vertical suspension for vertically lifting a ready-made concrete pile having the vertical suspension member fixed at an appropriate position on the outer periphery. Inclined suspension for suspending the ready-made concrete pile in a state of being tilted to a position of the inclined suspension member being shifted to one side of its outer periphery. The vertical suspension member can be used when the ready-made concrete pile is suspended vertically, and when the ready-made concrete pile is suspended in the inclined state, the vertical suspension member and the inclined suspension are provided. It is only necessary to use a member, and there are two members to be attached to the ready-made concrete pile, the number of members can be reduced, and the ready-made concrete pile hanging device can be easily attached to the ready-made concrete pile, thereby reducing the cost. .

  Further, the vertical suspension member includes a cylindrical body portion and a ring-shaped flange member integrated with the front end of the body portion. The flange fixing member is configured by the flange member, and the flange member By providing a bolt insertion hole for fixing the pile at a position corresponding to the screw hole provided on the tip surface of the ready-made concrete pile, the vertical suspension member can be easily fixed to the tip portion of the ready-made concrete pile.

  Furthermore, the vertical suspension member is provided with a pair of vertical suspension brackets on the outer periphery of the trunk portion and symmetrical to each other about the axis of the trunk portion, so that a ready-made concrete pile is provided. Can be suitably suspended when hung vertically.

  Furthermore, the inclined suspension member has a cylindrical body, and when the suspended concrete pile is suspended in an inclined state by providing the inclined suspension bracket on the lower end side outer periphery of the body, It can be suspended in a more suitably inclined state.

  Furthermore, an outward flange is integrally provided at each joint side end portion of the vertical suspension member and the inclined suspension member, and the vertical suspension member and the inclined suspension member can be fixed by bolting between both flanges. By doing so, the vertical suspension member and the inclined suspension member can be fixed, and when the ready-made concrete pile is suspended in an inclined state, it can be suspended more stably.

  Further, one of the outward flanges is provided with a bolt insertion elongated hole having an arc shape with the same center radius as the body portion, and the other flange is bolted through the elongated hole so as to be inclined with the vertical suspension member. When the suspension members are fixed to each other, it is easy to position the joining side end portions of the vertical suspension member and the inclined suspension member, and the suspension members can be easily fixed.

  Next, an embodiment of the present invention will be described based on the examples shown in FIGS.

  FIG. 1 shows a state in which a ready-made concrete pile suspension device according to the present invention is attached to a ready-made concrete pile, wherein reference numeral 1 denotes a ready-made concrete pile suspension device, and reference numeral 2 denotes a ready-made concrete pile.

  The ready-made concrete pile suspension device 1 according to the present invention includes a vertical suspension member 3 and an inclined suspension member 4. As shown in FIG. 1, the vertical suspension member 3 and the inclined suspension member 4 are fixed to the head of the ready-made concrete pile 2 by fitting the vertical suspension member 3 to the head-side outer periphery of the ready-made concrete pile 2. An inclined suspension member 4 is fitted and attached to the lower outer periphery of the fixed vertical suspension member 3, and a suspension tool such as a wire is attached to the inclined suspension member 4 and lifted by a crane or the like. It is lifted in an inclined state.

  Further, when lifting the ready-made concrete pile 2 in a vertical state, a wire or the like is connected to the vertical suspension member 3 and lifted. At this time, only the vertical suspension member 3 may be attached to the ready-made concrete pile 2.

  In addition, the ready-made concrete pile 2 is suspended so that the pile head to which the ready-made concrete pile hanging device 1 is attached is on the upper side.

  As shown in FIG. 2, the vertical suspension member 3 includes an inner cylindrical vertical suspension trunk portion 5 fitted to the outer periphery of the ready-made concrete pile, and a ready-made concrete pile formed on the outer surface of the vertical suspension trunk portion 5. A vertical hanging bracket 6 for attaching a wire or the like for hanging, and a pile fixing portion 7 for fixing the vertical hanging member 3 to a ready-made concrete pile are provided.

  As shown in FIG. 2, the vertical suspension body 5 is formed in a cylindrical shape having an inner diameter that is slightly larger than the outer diameter of the ready-made concrete pile 2. The lower flange 9 is formed so as to be parallel to each other. A pair of flanges are integrally provided. Between the flanges 8 and 9, longitudinal reinforcing pieces 10 that connect both furan times are interposed at predetermined intervals in the circumferential direction to reinforce the flanges 8 and 9.

  The vertical suspension body 5 is provided with a pair of vertical suspension brackets 6 at positions symmetrical to each other about the axis of the vertical suspension body 5. This vertical hanging bracket 6 has a protruding portion 11 protruding from the outer surface of the vertical hanging body portion, and a hanging member 12 supported by the protruding portion 11 and having a hanging hole 13. The installation portion 11 is integrated with the vertical suspension trunk portion 5 so as to straddle the upper flange 8 and the lower flange 9.

  The projecting portion 11 is continuously provided between the convex portions 8a and 9a in which a part of the outer periphery of both the flanges 8 and 9 protrudes in the horizontal direction, and between the convex portions 8a and 9a and between the flanges 8 and 9. A vertical reinforcing plate 11 a is formed, and a suspension member 12 is integrated with a protruding end of the protruding portion 11.

  The suspension member 12 has a plate shape, and one end portion in the longitudinal direction is formed in a semicircular shape. A suspension hole 13 having a circular hole concentric with the semicircle is formed at one end of the semicircular shape, and the end of the suspension hole 13 is directed toward the upper end side of the vertical suspension body 5. The suspension member 12 is integrated with the projecting portion 11 in a state of projecting upward from the projecting portion 11.

  A pile fixing part 7 is integrated and provided at the upper end of the vertical suspension body part 5. As shown in FIG. 2, the pile fixing portion 7 has a shape in which a flat plate is formed in a circular ring shape, and is integrated with an arrangement in which an inward flange shape is formed at the upper end of the vertical suspension trunk portion 5. This pile fixing part 7 is formed in a ring shape whose inner diameter is smaller than the inner diameter of the ready-made concrete pile 2 and whose outer diameter is equal to the outer diameter of the vertical suspension trunk part 5, and on the ring, a constant interval in the circumferential direction is formed. A large number of radial reinforcing ribs 22 integrated with each other and a ring-shaped reinforcing rib 23 integrated on the front surface of the ring-shaped inner periphery are integrally provided.

  A number of bolt insertion holes 21, 21... Are vertically opened at predetermined intervals on the pile fixing portion 7 concentrically with the circular ring. These bolt insertion holes 21, 21... Are arranged corresponding to the screw holes provided in the end face of the ready-made concrete pile 2, and as shown in FIG. The vertical suspension body 5 can be fixed to the ready-made concrete pile 2 by being screwed into the screw holes provided in the ready-made concrete pile 2 through 21.

  On the outer periphery of the lower flange 9, a pair of projecting portions 24, 24 for forming long holes are integrally provided at symmetrical positions with the center of the vertical suspension body 5 as the center. In the vertical suspension body 5, arc-shaped long holes 25, 25 concentrically arranged are vertically opened.

  As shown in FIG. 3, the inclined suspension member 4 is fitted to the outer periphery of the ready-made concrete pile 2, and when the ready-made concrete pile 2 is suspended, the inner-side cylindrical inclined suspension body 31 that supports the ready-made concrete pile 2, On the outer surface of the inclined suspending body 31, there is an inclined suspending metal fitting 32 provided integrally at a position shifted to one side. The ready-made concrete pile 2 can be lifted diagonally by engaging a suspension member such as a wire with the hanging bracket for inclined suspension 32 and lifting it with a crane.

  The inclined suspension body 31 is formed in a cylindrical shape having an inner diameter slightly larger than the outer diameter of the ready-made concrete pile 2, and a pair of flanges composed of an outer surface of the lower end portion and an upper flange 33 and a lower flange 34 are parallel to each other. It is integrated so that Between the upper and lower flanges 33, 34, a plurality of reinforcing pieces 36, 36,.

  The upper and lower flanges 33 and 34 are each provided with a hanging bracket mounting portion 35 with a part of the outer periphery protruding, and a pair of inclined hanging brackets 32 and 32 are integrated therewith. Each of the slanting suspension metal fittings 32 is formed in a plate shape having one end on a semicircular shape, and a suspension having a circular hole concentric with the semicircle on the end of the semicircular shape. A hole 32a is formed.

  The slanting suspension metal fitting 32 is fixed by straddling the upper and lower flanges 33 and 34 so as to be integrated with the end of the suspension hole 32a projecting toward the upper surface of the upper flange 33. The longitudinal direction of the suspension fitting 32 is directed parallel to the axis of the cylindrical inclined suspension trunk. In addition, the pair of hanging metal fittings 32 and 32 are fixed to each other so as to be parallel to each other with a predetermined gap therebetween, and the respective hanging holes 32a and 32a have the same height.

  In addition, a side surface of the inclined suspension body 31 is provided with a body reinforcing portion 51 integrally with the inclined suspension body 31. The body reinforcing portion 51 is provided on the side surface of the cylindrical inclined suspension body portion 31 and has a pair of substantially rectangular plates formed from the lower flange 34 to the upper end of the inclined suspension body portion 31 perpendicular to the flange 34. Between the pair of reinforcing plates 52, 52 having reinforcing plates 52, 52 installed at a predetermined distance from each other, a plate-shaped reinforcing piece 53 substantially perpendicular to the reinforcing plates 52, 52. , 53... Are integrated with the inclined suspension body 31 so as to be spanned from one reinforcing plate 52 to the other reinforcing plate 52 at a predetermined interval. In addition, the body reinforcing portion is formed between a pair of slanting suspension metal fittings 32 on the side surface of the slanting suspension body 31.

  On the outer periphery of the upper end portion of the inclined suspending body 31, projecting pieces 55, 55 for fixing a vertical suspension member in the radial direction are provided so as to be symmetrical with respect to the center of the body part. Bolt insertion holes 56 are vertically opened through the projecting piece 55. Then, as shown in FIG. 4, bolts 57 for connecting between the suspension members are inserted into the respective bolt insertion holes 56 and the respective long holes 25 provided in the respective overhang portions 24 of the lower flange of the vertical suspension member 3 described above. The suspension members 3 and 4 can be connected to each other by passing through and screwing and fastening the nut 58.

  Next, an example of a method for using the ready-made concrete pile hanging device 1 will be described.

  Spiral rod 81 previously inserted into the hollow portion of the cylindrical ready-made concrete pile 2 when the first ready-made concrete pile 2 is driven in the underground digging method as one of the underground burying methods of the ready-made concrete pile 2 And the auger 83 of the pile driving machine 82 must be connected. At that time, in order to avoid interference between the crane 84 and the pile driving machine 82, the ready-made concrete pile 2 is lifted obliquely. When suspending the ready-made concrete pile 2 at an angle, as shown in FIG. 4, the vertical suspension member 3 and the inclined suspension member 4 are attached to the head of the ready-made concrete pile 2, and the inclined suspension member is provided with the inclination. The wire 85 is connected to the suspension metal fitting 32 and the wire 85 is lifted by the crane 84, whereby the ready-made concrete pile 2 is inclined and suspended.

  In addition, when another ready-made concrete pile 2 is added after the first ready-made concrete pile 2 is laid, another ready-made concrete pile is vertically connected on the already-made embedded concrete pile. In this case, as shown in FIG. 5, the vertical suspension member 3 is mounted on the head of another ready-made concrete pile 2, and the vertical suspension member 6 and the crane 84 provided on the vertical suspension member 3 are connected to the wire 85. And the ready-made concrete pile 2 is lifted vertically.

  In addition, the vertical suspension member 3 and the inclined suspension member 4 are provided so that when the ready-made concrete pile suspension device 1 is attached to the ready-made concrete pile 2, the inclined hanging suspension metal fitting 32 provided in the inclined suspension member 4 is used for the ready-made concrete pile. The size should be about 1.5 m from the upper end.

It is a top view in the state where the ready-made concrete pile hanging device concerning the present invention was fixed to the concrete pile which laid down sideways. (A) is a plan view showing the above vertical suspension member, (B) is a half-longitudinal front view in which the right half is cut vertically, and (C) is a side view thereof. (A) is a plan view showing the above-described inclined suspension member, (B) is a half longitudinal front view in which the right half is cut longitudinally, and (C) is a side view. It is an expanded sectional view of the state fixed to the concrete pile of the apparatus shown in FIG. It is a side view which shows the process of putting a concrete pile into a slanting suspended state with the same apparatus, and mounting | wearing a pile driving machine. It is a side view which shows the process of making a concrete pile vertically hung with the same apparatus and moving it on the concrete pile previously laid. It is a side view which shows the state suspended diagonally with the conventional concrete pile suspension apparatus. It is sectional drawing which shows the fixed state with respect to the concrete pile of the apparatus same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ready-made concrete pile suspension apparatus 2 Ready-made concrete pile 3 Vertical suspension member 4 Inclined suspension member 5 Vertical suspension trunk | drum 6 Vertical suspension bracket 7 Pile fixing part 8 Upper flange 9 Lower flange 10 Reinforcement piece 11 Projection part 12 Suspension member 13 Suspension hole 21 Bolt insertion hole 22 Fixing ring part 23 Reinforcement ring part 24 Overhang part 25 Long hole 31 Inclined suspension trunk 32 Inclined suspension bracket 32a Suspension hole 33 Upper flange 34 Lower flange 35 Suspension bracket mounting part 36 Reinforcing piece 51 Body reinforcing part 52 Reinforcing plate 53 Reinforcing piece 55 Projection piece 56 Bolt insertion hole 57 Bolt 58 for connecting between suspension members Nut 81 Spiral rod 82 Pile driver 83 Auger 84 Crane 85 Wire

Claims (6)

A prefabricated concrete pile hanging device that is attached to the head of a prefabricated concrete pile, lifts the precast concrete pile via a suspension wire, and is attached to a pile driving machine,
A cylindrical vertical suspension member that is fitted and fixed to the outer periphery of the head of the ready-made concrete pile, and a cylindrical inclined suspension that is under the vertical suspension member and is fitted to the outer periphery of the ready-made concrete pile. And having a member
The vertical suspension member has an inward flange-like pile fixing portion at an end portion, and includes a vertical hanging suspension bracket for vertically lifting a ready-made concrete pile having the vertical suspension member fixed to an appropriate portion of the outer periphery,
The ready-made concrete pile hanging apparatus provided with the hanging metal fitting for inclination hanging for the said inclined hanging member to lift in the state which inclined the said ready-made concrete pile in the position put near to the one side of the outer periphery.   The vertical suspension member has a cylindrical body and a ring-shaped flange member integrated at the front end of the body, the pile fixing portion is configured with the flange member, and the flange member The ready-made concrete pile hanging apparatus of Claim 1 with which the bolt insertion hole for pile fixing is provided in the position corresponding to the screw hole with which the front end surface of the ready-made concrete pile was equipped.   3. The vertical suspension member according to claim 1, wherein the vertical suspension member includes a pair of vertical suspension brackets on the outer periphery of the trunk portion and symmetrically with respect to the axis of the trunk portion. Ready-made concrete pile hanging device.   4. The ready-made concrete pile suspension device according to claim 1, wherein the inclined suspension member has a cylindrical body portion, and the suspension bracket for the inclined suspension is provided on an outer periphery on a lower end side of the body portion.   An outward flange is integrally provided at each joint side end of the vertical suspension member and the inclined suspension member, and the vertical suspension member and the inclined suspension member can be fixed freely by bolting between both flanges. The ready-made concrete pile hanging apparatus of Claims 1-3 or 4 which become.   6. The ready-made concrete pile suspension according to claim 5, wherein a bolt insertion long hole having an arc shape with the same center radius as that of the trunk portion is provided on one of the two outward flanges, and the flange on the other side is bolted through the long hole. apparatus.

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