JP4992153B2 - Ready-made pile hanging bracket combined use pile erection device connector - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a ready-made pile hanging bracket combined use pile erection device connector for use in lifting an existing concrete pile in an outer moat method (pre-boring method) or the like, and for connecting to a rotary drive shaft of a pile erection device.

  Conventionally, as a method of standing ready-made concrete piles in the ground, the outer excavation method (pre-boring method), that is, the pile insertion hole is formed in the ground first using an excavator, and the pile insertion hole is ready-made. There is a method of inserting concrete piles. In this method, the ready-made concrete pile to be inserted into the pile insertion hole is lifted upright by a crane and inserted into the pile insertion hole from the lower end thereof, or the ready-made concrete pile lifted at the upper end of the pre-installed concrete pile previously inserted Connect the bottom ends of.

  Conventionally, the suspension of the ready-made concrete pile at the time of the construction of the ready-made concrete pile has been generally performed by using a sling wire rope and winding it around the ready-made concrete pile.

  Also, when lifting a ready-made concrete pile and installing it in a pre-drilled pile insertion hole, the muddy water injected to stabilize the inner wall surface during the pile insertion hole drilling, If it is necessary to set up against buoyancy caused by solidified material such as cement milk that fills the gap between the inner wall of the pile insertion hole and frictional force with the inner wall of the pile insertion hole, etc. Install the ready-made concrete piles raised by lifting on the pile erection device, and set the piles while rotating the piles.

In that case, as a member for mounting a ready-made concrete pile to a pile erection device so that rotation drive is possible, conventionally, there exists a pile connection device shown, for example in FIGS. (Patent Document 1)
This device includes a claw plate 41 that is fixed to the tip of a ready-made concrete pile 40 and a pile rotation cap 42 that is placed on the outside thereof. The claw plate 41 has a plurality of engagement claws 43 on its outer periphery. The pile rotation cap 42 has a cylindrical shape with an open lower end with the top end closed, and an engagement groove 44 in which the engagement claws 43, 43. 44 ... is formed.

  The engaging grooves 44, 44... Have a vertical portion 44a whose lower end is opened at the lower edge of the pile rotation cap 42, and a horizontal portion 44b bent horizontally from the upper end of the vertical portion 44a. A so-called bayonet mechanism that is formed in a mold and is prevented from coming off in the axial direction by inserting the engaging claw 43 from the lower end of the vertical portion 44a and turning the upper end portion into the horizontal portion 44b. It is composed.

The pile rotation cap 42 is fixed to the rotation drive shaft of the pile rotation means provided in the pile erection device, and the claw plate 41 is fixed to the ready-made concrete pile 40 with bolts 45, 45. The ready-made concrete pile 40 is lifted and the pawl plate 41 and the pile rotation cap 42 are engaged with each other by the bayonet mechanism.
JP 2001-131966 A

  However, with the recent increase in size of ready-made concrete piles, heavy-weight ready-made concrete piles with large pile diameter and pile length have been used. In the method of using the wire rope, it is necessary to use a large diameter wire rope, the handling performance of the wire rope deteriorates, the winding work becomes difficult, and the pile may fall off from the wound wire rope In addition, there is a problem that the wire rope is easily damaged by the weight of the pile.

  In addition, when the ready-made concrete piles are built, the above-described pile coupling device using the bayonet structure has a problem that stress is concentrated on the engaging claws and is easily damaged.

  In view of such a conventional problem, the present invention is easily and safely performed when lifting a ready-made concrete pile, and is also easy when connecting a ready-made concrete pile to a rotary drive shaft of a pile erection device. In addition, the purpose of the present invention is to provide a ready-made pile hanging bracket combined use pile erection device connector that is rich in durability.

  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 head of the ready-made concrete pile via a suspension wire. It is a pre-made pile hanging bracket combined use pile erection device connector that has a shaft joint member that is lifted vertically and connected to the rotary drive shaft of the pile erection device, and is fitted and fixed to the outer periphery of the pre-made concrete pile. A cylindrical body portion having a top plate fixed to a head end surface of the ready-made concrete pile at one end portion of the tubular body portion, and an outer periphery of the tubular body portion Is provided with a pair of wire hooking members engaged with the suspension wires at positions symmetrical to each other about the axis of the cylindrical body, and the top plate has a head end surface of the ready-made concrete pile. In the position corresponding to the numerous screw holes provided in the The insertion hole is formed in the center portion of the top plate, in that it has a shaft coupling member which is non-turnably connected with respect to the rotary drive shaft of the pile construction inclusive device.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the joint member protrudes from the outer surface side of the top plate and is connected to the lower end of the rotary drive shaft of the pile building device. It is formed in a substantially prismatic shape to be fitted into the cylindrical shaft joint member, and the shaft joint member is provided with a pin fitting concave groove in which a retaining pin penetrating the cylindrical shaft joint member is fitted. There is in being.

  In the ready-made pile suspension fitting combined pile erection device connector according to the present invention, the ready-made concrete pile is attached to the head of the ready-made concrete pile, the ready-made concrete pile is lifted vertically through a suspension wire, and the pile drive device is driven to rotate. It is a ready-made pile suspension fitting combined pile builder connection tool provided with a shaft joint member to be connected to the shaft, and has a cylindrical tubular body portion that is fitted and fixed to the outer periphery of the ready-made concrete pile, One end of the cylindrical body has a top plate fixed to the end face of the head of the ready-made concrete pile, and the outer periphery of the cylindrical body is provided with an axis of the cylindrical body. A pair of wire hooking members engaged with the suspension wires are provided at positions symmetrical to each other as the center, and the top plate corresponds to a number of screw holes provided on the head end surface of the ready-made concrete pile. If a bolt insertion hole is formed at the position In addition, the center portion of the top plate has a shaft joint member that is non-rotatably connected to the rotation drive shaft of the pile erection device, so that if this device is mounted on a ready-made concrete pile, Even if the ready-made concrete pile has a large diameter, it is possible to lift the ready-made concrete pile lying down vertically without damaging the wire and to build it into the pile insertion hole that has been excavated earlier. it can. And the ready-made concrete pile can be connected to the rotary drive shaft of the pile-built device through this ready-made pile hanging bracket combined pile built-in device connector, and the ready-made concrete pile can be suitably kept in a suspended state. It can be laid while rotating together.

  Further, the joint member is formed in a substantially prismatic shape that protrudes from the outer surface side of the top plate and is fitted into a cylindrical shaft joint member that is connected to the lower end of the rotary drive shaft of the pile erection device. The tubular shaft joint member connected to the lower end of the rotary drive shaft of the pile erection device by having a pin fitting concave groove in which the retaining pin through which the tubular shaft joint member passes is fitted in the member And can be suitably and easily connected. Moreover, it becomes a highly durable connection structure.

  Next, embodiments of the present invention will be described based on examples shown in the drawings.

  FIGS. 1-8 has shown an example of the ready-made pile suspension metal fitting combined use pile construction apparatus connector (henceforth a suspension combined connector) which concerns on this invention. This hanging joint connector is used by being attached to the head of a cylindrical shaped concrete pile.

  As shown in FIGS. 1 to 4, the suspension / use connector 1 includes a cylindrical tubular body 2, a top plate 3 provided at one end of the tubular body 2, and a tubular body. The wire hooking members 4 and 4 provided on the outer peripheral surface of the portion 2 and the shaft joint member 5 provided on the top plate 3 are provided.

  The cylindrical trunk | drum 2 is formed in the cylindrical shape fitted by the outer periphery of a ready-made concrete pile. And the top plate 3 is integrally installed in the axial direction one side edge part of the cylindrical trunk | drum 2, and the suspension connector 1 whole is shape | molded by the bottomed cylindrical shape. The top plate 3 is fixed to the end face of the head of the ready-made concrete pile. By fixing the top plate 3 to the head of the ready-made concrete pile, the suspension-use connector 1 as a whole is made into the ready-made concrete pile. Fixed.

  As shown in FIG. 3, the top plate 3 has a ring-shaped portion 3a installed in an inward flange shape on the upper end surface of the cylindrical body 2, and a substantially cross-shape inside the ring-shaped portion 3a. It consists of a cross-shaped portion 3b that is integrally molded in a stretched shape. Bolt insertion holes 6, 6... Are formed in the ring-shaped portion 3a so as to be concentrically arranged with the ring-shaped portion 3a.

  These bolt insertion holes 6, 6... Are formed in an arrangement corresponding to the screw holes formed in the head end face of the ready-made concrete pile, and as shown in FIG. The top plate 3 is fixed to the ready-made concrete pile 31 by screwing the bolts 33 into the screw holes of the ready-made concrete pile 31.

  Further, the bolt insertion holes 6, 6... Are formed in recesses 8, 8... That are lower than the other portions of the ring-shaped portion 3a by only the head portion of the bolt.

  The top plate 3 is provided with through holes 7, 7... Penetrating the front and back of the top plate 3. Further, the crossed portion of the cross-shaped portion 3b of the top plate 3 is formed in a circular shape. This circular portion is formed concentrically with the cylindrical body 2, and a number of bolt insertion holes 10, 10...

  A shaft joint member 5 is installed in this circular portion. The shaft joint member 5 is formed in a hexagonal column shape, and protrudes upward in a coaxial arrangement with the cylindrical body portion 2. A disk-shaped substrate 5a is integrally provided at the lower end of the shaft joint member 5, and bolt insertion holes 10, 10... Opened in circular portions intersecting the cross of the cross-shaped portion 3b described above are formed on the substrate 5a. .. Are formed, and as shown in FIG. 4, the bolts 12, 12... The plate 3 is fixed at a predetermined position.

  The shaft joint member 5 has a tapered portion formed at the tip thereof, and a pin fitting recess in a direction perpendicular to the axial direction of the joint member 5 on a pair of parallel surfaces on the side surface of the hexagonal column. Grooves 13 are formed. The pair of pin fitting concave grooves 13 and 13 are formed at positions shifted in the vertical direction.

  As shown in FIG. 5, the shaft joint member 5 configured in this way constitutes a shaft joint with a cylindrical shaft joint member 14 installed at the tip of the rotary drive shaft of the pile erection device. The cylindrical shaft joint member 14 is formed with a shaft joint member fitting hole 16 having a hexagonal cross section in which the shaft joint member 5 is non-rotatably fitted in the axial center portion thereof. 5 is inserted into the pin fitting concave grooves 13 and 13 of the shaft joint member 5, and the retaining pins 15 and 15 through which the cylindrical shaft joint member 14 is inserted are inserted into the shaft joint member 5 and The cylindrical shaft joint members 14 are prevented from being detached from each other.

  A pair of wire-hanging members 4, 4 for engaging suspension wires 26, 26 that suspend a ready-made concrete pile are provided on the outer periphery of the cylindrical body portion 2. The wire-hanging members 4 and 4 are provided on the outer peripheral surface of the cylindrical body 2 at positions that are symmetrical with each other about the axis of the cylindrical body 2.

  The wire-hanging members 4, 4 have a projecting portion 21 projecting from the lower outer surface of the cylindrical body portion 2 and a suspension portion 23 supported by the projecting portion 21 and having a suspension hole 22. . As shown in FIG. 5, a suspension wire 26 is coupled to the suspension hole 22 via a wire connector 25 that is a shackle. As the suspension wire 26, a wire whose tip is a ring shape is used.

  Note that when the suspension wires 26 and 26 are engaged with the wire hanging members 4 and 4, the suspension wire 26 may be directly passed through the suspension hole 22 to be engaged. Moreover, the wire couplers 25 and 25 should just be a substantially ring-shaped thing which can be attached / detached to / from the suspension hole 22 and can be coupled to the tip of the suspension wire 26 formed in a ring shape.

  As shown in FIGS. 1 to 3, the protruding portion 21 includes an upper plate-shaped material 21 a and a lower plate-shaped material 21 b that are protruded in parallel to each other at the lower outer periphery of the cylindrical body portion 2, and an upper plate shape thereof. A rectangular plate-like material 21c is formed so as to be sandwiched between the material 21a and the lower plate-like material 21b.

  The upper plate member 21a and the lower plate member 21b are formed in a substantially trapezoidal shape, and project from the tubular body 2 in parallel to each other in a direction substantially perpendicular to the longitudinal direction of the tubular body 2. Further, the upper plate member 21 a and the lower plate member 21 b are projected so that the bottom side of the trapezoid is integrated with the cylindrical body 2. The rectangular plate-like material 21c is integrated with the upper and lower plate-like materials 21a and 21b substantially perpendicularly and sandwiched between the upper and lower plate-like materials 21a and 21b. And the plate-shaped suspension part 23 is integrated with the protrusion direction side edge part of this protrusion part.

  One end of the suspension part 23 is formed in a semicircular shape, and a circular suspension hole 22 is formed concentrically with the semicircular shape. As for this suspension part 23, the one side edge part made into the semicircle shape protrudes upwards rather than the upper side plate-shaped material 21a.

  Note that the reference numeral 24 is a suspension fitting mainly used for moving only the suspension / coupling connector 1, and the work suspension 24 has a hole to which a work wire is attached.

  As shown in FIG. 5, the suspension / use connector 1 configured in this manner is attached to the head of a cylindrical ready-made concrete pile 31. A ring-shaped steel end plate 32 is installed at the head end of the ready-made concrete pile 31, and the end plate 32 is provided with a screw hole. Then, the bolts 33 are inserted into the bolt insertion holes 6, 6... Of the top plate 3 and screwed into the screw holes. In this way, the suspension / use connector 1 is fixed to the ready-made concrete pile 31.

  For example, in the pre-boring method, the suspension / connecting connector 1 is attached to the head of the ready-made concrete pile 31 and the ready-made concrete pile 31 is attached by the crane 34 via the suspension wires 26 and 26 as shown in FIG. lift. Then, the ready-made concrete pile 31 is inserted into the pile insertion hole 35 previously drilled by the crane 34 and set.

  At the time of this laying, when it does not descend only by natural fall due to its own weight, the pile laying device 36 is used for laying while applying rotation. The ready-made concrete pile 31 is attached to the pile erection device 36 by lifting the ready-made concrete pile 31 as described above and inserting the lower end into the pile insertion hole 35 as shown in FIG. The rotary drive shaft 37 is moved so that the rotary drive shaft 37 is positioned on the extension of the ready-made concrete pile 31, and then the rotary drive shaft 37 is lowered together with the rotary drive mechanism 38, and the cylindrical shaft joint member 14 at the lower end thereof is moved. Is fitted to the joint member 5 and is prevented from coming off. In this state, the rotation drive mechanism 38 is operated, and the ready-made concrete pile 31 is lowered while rotating.

  Further, when a plurality of ready-made concrete piles 31 are connected to one pile insertion hole 35 in the axial direction and set, as shown in FIG. 8, the upper end of the ready-made concrete pile 31 previously set is projected to the ground. In the state, the periphery is grabbed and supported by the support frame 39 assembled on the ground so that it cannot be lowered. Thereafter, another ready-made concrete pile 31a is lifted by a crane and its lower end is laid down first. The upper ready-made concrete pile 31a is made self-supporting by butting the upper end of the concrete pile 31 and connecting the piles 31 and 31a by welding or other means. Thereafter, in the same manner as described above, the pile erection device 36 is moved to a predetermined position to connect the cylindrical shaft joint 14 to the shaft joint 5.

  The top plate 3 may have a structure that closes the cylindrical body 2. Moreover, when providing a through-hole in the top plate 3, the number should just be one or more.

  Note that the shaft joint structure including the shaft joint member 5 and the cylindrical shaft joint 14 is connected to the rotation drive shaft 37 of the pile building device 36 and is connected to the rotation drive shaft so as not to rotate. However, the shaft joint structure is not limited to the structure of the above-described embodiment, and various types conventionally used can be used.

It is a front view which shows an example of the suspension combined connector which concerns on this invention. It is a side view same as the above. It is a top view same as the above. It is a sectional side view same as the above. It is sectional drawing which shows the state which mounted | wore with the ready-made concrete pile and connected with the rotational drive shaft. It is a side view which shows the state which has lifted the pile using the suspension combined use connector same as the above. It is a side view which shows the state which is sunk while rotating a ready-made concrete pile using the suspension combined use connector same as the above. It is a side view showing a state in which a plurality of ready-made concrete piles are axially connected and rotated while being laid down and the upper ready-made concrete piles and the pile erection device are connected via the suspension-use connecting device according to the present invention. is there. (A) It is a sectional side view which shows the state which mounted | wore the ready-made concrete pile with the conventional plate with a nail | claw. (B) It is a top view which shows the state which mounted | wore the existing concrete pile with the conventional plate with a nail | claw. It is a side view which shows an example of the conventional cap for pile rotation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suspension combined connector 2 Cylindrical trunk | drum 3 Top plate 3a Ring-shaped part 3b Cross-shaped part 4 Wire hooking member 5 Shaft joint member 5a Board | substrate 6 Bolt insertion hole 7 Through-hole 8 Recess 9 Bolt 10 Bolt insertion hole 11 Bolt insertion hole 12 bolt 13 pin fitting concave groove 14 cylindrical shaft joint member 15 retaining pin 16 shaft joint member fitting hole 21 projecting portion 21a upper plate member 21b lower plate member 21c square plate member 22 hanging hole 23 hanging portion 24 Working suspension part 25 Wire connector 26 Hanging wire 31 Ready-made concrete pile 31a Ready-made concrete pile 32 End plate 33 Bolt 34 Crane 35 Pile insertion hole 36 Pile builder 37 Rotation drive shaft 38 Rotation drive mechanism 39 Support frame 40 Ready-made concrete Pile 41 Claw plate 42 Pile rotation cap 43 Engaging claw 44 Engaging groove 44a Longitudinal portion 44b Lateral portion 45 bolt

Claims (2)

Prefabricated pile hanging bracket combined pile mounting with shaft joint member attached to the head of the prefabricated concrete pile and lifting the prefabricated concrete pile vertically through a suspension wire and connecting to the rotary drive shaft of the pile erection device A device connector,
It has a tubular cylindrical body that is fitted and fixed to the outer periphery of the ready-made concrete pile,
At the one side end of the cylindrical body portion, there is a top plate fixed to the head end surface of the ready-made concrete pile,
On the outer periphery of the cylindrical body part, a pair of wire hooking members to be engaged with the suspension wire are provided at positions symmetrical to each other around the axis of the cylindrical body part,
In the top plate, bolt insertion holes are formed at positions corresponding to a large number of screw holes provided on the head end surface of the ready-made concrete pile, and in the center portion of the top plate, the pile A prefabricated pile hanging bracket combined pile builder connection tool characterized by having a shaft joint member that is non-rotatably connected to the rotation drive shaft of the erection device. The joint member is formed in a substantially prismatic shape protruding from the outer surface side of the top plate and fitted into a cylindrical shaft joint member connected to the lower end of the rotary drive shaft of the pile building device,
2. The ready-made pile suspension fitting combined use pile construction according to claim 1, wherein the shaft coupling member is provided with a pin fitting concave groove in which a retaining pin penetrating the cylindrical shaft coupling member is fitted. Screw device coupling.

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