JP3195072U - Connection device for rotary intrusion piles - Google Patents

Abstract

The present invention provides a connecting device for a rotating penetrating pile that improves the efficiency of penetrating work by eliminating the need for connecting work at a high place. A connection device 20 for connecting a rotary penetrating pile 10 to a rotating device provided at the tip of a plurality of joint arms or telescopic arms, the holder tube 30 connecting and fixing the upper end of the rotary penetrating pile, A parallel flange 31 disposed opposite to the upper surface P of the holder tube and a prism member 40 attached via the parallel flange are provided. Further, a support hole 38 into which the lower part of the prismatic member is fitted is provided on the upper surface of the holder tube, while a long hole 43 is formed in either the parallel flange or the prismatic member, and the fixing pin 50 is inserted through the elongated hole. By fixing the prism member, the prism member is supported rotatably with respect to the upper surface of the holder tube, and when the prism member is pushed downward, the lower portion of the prism member is fitted into the support hole and rotated. Force is transmitted to the holder tube. [Selection] Figure 7

Description

  The present invention relates to a structure of a connecting device for connecting a rotary penetrating pile having a spiral blade to a pile body and a heavy machine having a rotating device at the tip of a plurality of joint arms.

  Rotating penetrating piles with spirals (spiral blades) on the outer periphery of the pile are used for various applications of foundation work.

  Conventionally, when a relatively long rotating penetrating pile of about 6 to 10 m is struck using a small heavy machine such as a building pillar machine or a hydraulic excavator, the following work has been conventionally performed.

  First, as shown in FIG. 9, a vertical hole is made in the ground G using the excavation auger 1 attached to the building pillar machine 2. 3 is a telescopic arm, 4 is a rotating device, and 5 and 6 are connecting members for connecting the excavating auger 1 and the rotating device 4. The building pillar machine 2 is mounted on the loading platform of the self-propelled vehicle 7, for example. The excavation auger 1 is used as the first work because it is difficult to safely connect the long rotating penetration pile to the rotating device 4 from the beginning.

  Next, as shown in FIG. 10, the rotary penetrating pile 10 is raised through the hook 8 of the building pillar machine 2, and its tip is put into a vertical hole H drilled in the ground G, so that the rotary penetrating pile 10 is upright. Stabilize posture.

  Then, as shown in FIG. 11, the rotation penetration pile 10 and the rotation apparatus 4 are connected. At the time of connection work, it is necessary to fasten and fix the connection members 5, 6, so that an operator rides on the high work vehicle 9 and performs necessary work in the high place. Then, after the connection is completed, the rotating device 4 is driven to rotate the rotary penetration pile 10 and the vertical hole H is dug deeply.

  Conventionally, there exists patent document 1 as a penetration apparatus (self-propelled type) of a rotary pile. Patent documents 2 and 3 are well-known techniques for building pillar machines.

JP2001-254358 JP 10-061360 JP 07-317018

  The problem is poor workability when hitting a rotating penetrating pile using a pillar machine or the like. This is because initial vertical hole excavation by the excavation auger 1 and connection work at a high place of the rotary penetrating pile 10 are required.

  These procedures are unavoidable in order to ensure safety, but the work time for driving the piles becomes long, so the work efficiency is poor. Moreover, since work using an aerial work vehicle is required, the cost increases.

  Therefore, an object of the present invention is to improve the efficiency of the penetration work by eliminating the connection work at a high place.

  In order to achieve the above-mentioned object, a connecting device for a rotating penetrating pile according to the present invention is based on a technical premise of a connecting device for connecting the rotating penetrating pile to a rotating device provided at the tip of a plurality of joint arms or telescopic arms. A holder tube for connecting and fixing the upper end of the rotating penetrating pile, a parallel flange disposed opposite to the upper surface of the holder tube, and a prism member attached via the parallel flange, the upper surface of the holder tube In addition, while providing a support hole into which the lower part of the prismatic member is fitted, a long hole is formed in either the parallel flange or the prismatic member, and the prismatic member is inserted through a fixing pin inserted through the elongated hole. By fixing, the prismatic member is supported rotatably with respect to the upper surface of the holder tube, and when the prismatic member is pushed downward via the rotating device, the lower part of the prismatic member is Fitted in Jiana, to transmit the rotational force of the rotating device to said holder tube (claim 1).

  According to this configuration, the prismatic member fixed to the upper surface of the holder tube can be swung, so that the prismatic member is erected while the rotary penetrating pile is laid on the ground, and the rotating device (4) A prismatic member can be connected. In other words, the connection work can be performed at the ground level and does not require an aerial work vehicle.

  Also, the rotating device (4) can lift the rotating penetrating pile as it is without using a crane hook. On the other hand, when the tip of the rotating penetrating pile is brought into contact with the ground, the lower part of the prism member is pushed downward. Is fitted into a support hole provided on the upper surface of the holder tube. At this time, since the prismatic member is constrained by the support hole, if the prismatic member is rotated via a rotating device, the holder pipe in which the lower part of the prismatic member is inserted is also driven and connected to the holder pipe. Can be driven and rotated, and piles can be driven in as they are.

  The separation dimension of the opposing parallel flange and the width dimension of the prism member accommodated between the parallel flanges may be substantially the same (claim 2).

  By accommodating (interposing) the prismatic member between the parallel flanges without any gap, the rotational force of the prismatic member is transmitted to the parallel flange, and the holder tube is rotated by the rotational force transmitted to the parallel flange. As a result, the rotational force of the prismatic member is less likely to be transmitted to the fixing pin, and the pile can be reliably prevented from falling off due to breakage of the fragile fixing pin. The strength of the parallel flange can be ensured by increasing the thickness of the parallel flange.

  The support hole provided in the upper surface of the holder tube may have a taper that widens upward (Claim 3).

  By providing the taper, when the lower end of the pile is grounded, the lower part of the prismatic member is smoothly fitted into the support hole, and the reliability of the function of transmitting the rotational force to the holder tube can be improved.

  According to the connecting device for rotating penetrating piles according to the present invention, connection work at a high place becomes unnecessary, and time efficiency and economic efficiency of the penetrating work of the pile can be improved.

1 is an exploded perspective view illustrating a connection device according to an embodiment. It is a figure which shows the state which lifted the rotation penetration pile using the connection apparatus shown in FIG. It is a figure which shows the connection apparatus shown in FIG. 1 in a cross section. It is a figure which shows the state at the time of setting the connection apparatus shown in FIG. It is a figure which shows the state which fell the prism member shown in FIG. It is a figure which shows a state when connecting a rotation apparatus and a rotation penetration pile using the connection member shown in FIG. It is sectional drawing which shows the state by which the prismatic member which concerns on embodiment was lifted. It is sectional drawing which shows the state by which the prismatic member which concerns on embodiment was pushed down. It is a figure which shows the 1st step of the conventional pile driving work. It is a figure which shows the 2nd step of the conventional pile driving work. It is a figure which shows the 3rd step of the conventional pile driving work.

  FIG. 1 shows an embodiment of a connecting device for a rotary penetrating pile according to the present invention.

  The connecting device 20 includes a holder tube 30 for connecting and fixing the upper end of the rotary penetrating pile, and a prism member 40, and the upper surface P of the holder tube 30 includes a parallel flange 31 and a lower portion of the prism member 40. A support hole 38 to be inserted is provided.

  As shown in FIG. 2, the connecting device 20 supports and fixes the upper part of the rotary penetrating pile 10 at the lower part of the holder tube 30, and connects and fixes the upper part of the prismatic member 40 to the rotating device 4. 4 functions to transmit the rotational force of 4 to the rotary penetrating pile 10. 2 is a building pillar machine, 3 is a telescopic arm, 4 is a rotating device, 5 is a connecting member, 7 is a self-propelled vehicle, and G is the ground. The connecting device 20 is preferably made of metal in order to ensure rigidity.

  Returning to FIG. 1, the configuration of each unit will be described. The holder tube 30 includes a guide base 32 having an inner diameter capable of holding the upper portion of the rotary penetrating pile 10 at the lower end, and a fixed hole 35 is provided in the guide base 32, and the rotary penetrating pile is interposed through the fixed hole 35. 10 is fixed (see FIG. 7). In addition, it is desirable that the inner diameter of the main body portion (30-1) of the holder tube 30 is set to a size that can hold the upper portion of the rotary penetrating pile 10.

  Two parallel flanges 31 are provided so as to face the upper surface P of the holder tube 30. The shape is not limited, but in order to prevent injury during the work, it is desirable to form it into a non-angular shape such as a substantially semicircular shape.

  Since the parallel flange 31 supports the prism member 40, a screw hole 33 is provided at an appropriate location, for example, at the upper left and right centers.

  The support hole 38 is provided between the two parallel flanges 31. Since the support hole 38 has a function of fitting the lower part of the prismatic member 40 and transmitting the rotational force of the rotating device 4 to the holder tube 30, the support hole 38 has a square shape similar to that of the prismatic member 40.

  A gap is provided between the parallel flange 31 and the prism member 40 so that the prism member 40 can rotate in a state where the lower portion of the prism member 40 is not fitted in the support hole 38. However, since the gap between the parallel flange 31 and the prism member 40 is desirably as small as possible, it is desirable that the support hole 38 is also opened at a position close to the base end portion of the parallel flange 31.

  When the prism member 40 is connected to the rotating device 4, for example, it is loaded and fixed inside the connecting member 5 fixed to the rotating device 4 (see FIG. 7). The connection is fixed via

  In addition, the lower part of the prism member 40 is provided with a long hole 43 extending in the vertical direction. As shown in FIG. 3, the screw hole 41 and the long hole 43 are respectively provided at positions facing the side wall surface 40-1. At the time of attachment, the prism member 40 is rotated 90 degrees around the axis from the state shown in FIG. 1 so that the elongated hole 43 and the screw hole 33 of the parallel flange 31 overlap. In FIG. 3, a symbol T is a taper provided in the support hole 38. By providing the taper T, the lower part of the prismatic member 40 can be smoothly guided to the support hole 38.

  As shown in FIG. 4, the prismatic member 40 is fixed between the parallel flanges 31 via a fixing pin 50, but the prismatic member 40 can move up and down according to a long hole 43 having a function of a guide. For this reason, in the state where the prismatic member 40 is lifted upward, the prismatic member 40 is rotated within a range of approximately 180 degrees as shown by the arrow A in FIG. 5 and the prismatic member 40 is pushed downward. In the state, the lower portion is fitted into the support hole 38.

  Therefore, according to the connecting device 20, as shown in FIG. 6, the prismatic member 40 is fixed to the rotating device 4 by rotating the prismatic member 40 in the substantially vertical direction even when the rotating penetrating pile 10 is horizontally placed on the ground G. It becomes possible to connect and fix the connecting member 5 and the prismatic member 40.

  Unlike the conventional work in which the rotary penetrating pile 10 is connected to the rotating device 4 in a state in which the rotating penetrating pile 10 is set up substantially vertically, the horizontally placed rotating penetrating pile 10 can be connected to the rotating device 4, so that the work efficiency is also dramatically improved. Improves safety. As a result, the working time can be shortened and the working cost can be greatly reduced.

  Hereinafter, the operation of the connection device 20 according to the present invention will be described more specifically.

  FIG. 7 shows a state in which the telescopic arm 3 of the building pillar machine 2 is lifted upward from the state shown in FIG. At this time, the prism member 40 moves upward and is not restrained by the support hole 38 of the holder tube 30. A gap Q is formed between the upper surface P of the holder tube 30 and the lower end surface of the prism member 40. In this state, the prism member 40 can freely swing (rotate) within a range of approximately 180 degrees. At this time, the fixing pin 50 inserted through the long hole 43 moves relatively to the lower end of the long hole 43.

  In addition, the code | symbol B1 is a volt | bolt (fixing metal fitting) for connecting and fixing the prismatic member 40 and the connection member 5, B2 is a volt | bolt (fixing metal fitting) for connecting and fixing the guide base 32 and the rotation penetration pile 10. B <b> 3 is a bolt (fixing bracket) for connecting and fixing the prismatic member 40 and the guide base 32.

  Therefore, even if the inclination angle of the telescopic arm 3 of the building pillar machine 2 changes every moment during the moving operation of the pile, the prismatic member 40 can flexibly respond to the angle change. Can be lifted, moved to a predetermined location, and upright at the location (see FIG. 2).

  FIG. 8 shows a state where the rotary penetrating pile 10 is upright at a predetermined position where the pile is to be driven and the telescopic arm 3 of the building pillar machine 2 is pushed down. At this time, the prism member 40 is pressed downward via the connecting member 5, and the lower portion of the prism member 40 is fitted into the support hole 38. At this time, the fixing pin 50 inserted through the long hole 43 relatively moves to the upper end of the long hole 43 or a position near the upper end.

  In this state, the lower part of the prism member 40 is restrained by a rectangular support hole 38 having a similar shape. Therefore, when the rotating device 4 is activated, the rotational force of the rotating device is changed from the connecting member 5 to the prism member 40 to the parallel flange. 31 → Holder pipe 30 → Rotating penetrating pile 10 is transmitted, and rotating penetrating pile 10 rotates and enters the ground (G).

  As described above, according to the connection device 20 according to the present invention, the rotary penetrating pile 10 is lifted and moved without using a crane hook as in the prior art, and when the position is determined, it is rotated at that position, and the ground (G) It becomes possible to shoot into.

  The connection device according to the present invention is not limited to this embodiment. For example, in the above-described embodiment, a case has been described in which the rotating device 4 is provided at the tip of the telescopic arm 3 that can be turned up and down / left and right, and the rotary penetrating pile 10 is driven. May be provided. This is because the rotation device 4 can be driven using hydraulic pressure.

  The prism member 40 interposed between the parallel flanges 31 preferably has a width dimension substantially the same as the separation dimension of the parallel flanges 31 and is rotatably supported with almost no gap. This is to prevent the prism member 40 from shaking and to prevent a large load from being applied to the fixing pin 50. However, when the rigidity of the fixing pin 50 is sufficient, the gap between the parallel flange 31 and the prism member 40 may be increased.

  The parallel flanges 31 arranged to face each other need only have substantially parallel opposing surfaces, and the outer surfaces do not need to be parallel. As the shape of the parallel flange 31, a triangular plate material, a square plate material, or a polygonal plate material having no curved surface may be used.

  The cross-sectional shape of the prismatic member 40 is desirably a square such as a square. This is because the connecting member 5 fixed to the rotating device 4 side has a square shape such as a square.

  The connection structure between the prism member 40 and the rotating device 4 is not limited. The upper part of the prism member 40 may be directly fixed to the rotating device 4. However, in order to improve the working efficiency, it is easier to connect and fix the lower part of the connecting member 5 fixed in advance to the rotating device 4 and the upper part of the prismatic member 40 via bolts or the like. Although the prism member 40 is illustrated as being fitted inside the connection member 5 (see FIG. 7), a connection structure in which the connection member 5 is fitted inside the prism member 40 may be used.

  The connection structure between the holder tube 30 and the rotary penetrating pile 10 is not limited. In the embodiment, the upper part of the rotary penetrating pile 10 is inserted inside the guide base 32 provided at the lower part of the holder pipe 30 (see FIG. 7), but other connection structures, for example, the lower part of the holder pipe 30 On the other hand, a horizontal flange may be provided on the upper end of the rotary penetrating pile 10, and the horizontal flanges may be joined to each other and bolted and fixed appropriately. This is because even with a fixed structure by joining horizontal flanges, required functions such as lifting of the rotary penetrating pile 10 and transmission of rotational force can be realized.

  The support hole 38 provided in the upper surface P of the holder tube 30 desirably has a taper T that expands upward. This is because it is easy to guide the lower part of the prismatic member 40 to the support hole 38, and it is easy to transmit the rotational force without rattling when the prismatic member 40 rotates. However, if the forming accuracy of the support hole 38 can be kept high, the rotational force can be transmitted without the prism member 40 being shaken without providing the taper T in the support hole 38. Therefore, it is necessary to provide the taper T. Absent.

DESCRIPTION OF SYMBOLS 2 Construction machine 3 Telescopic arm 4 Rotating device 5 Connection member (on rotating device side) 7 Self-propelled vehicle 10 Rotating penetration pile 20 Connecting device 30 Holder pipe 30-1 (Holder pipe) main body part 31 Parallel flange 32 Guide base 33 , 41 Screw hole 35 Fixing hole 38 Support hole 40 Square column member 40-1 Side wall surface 43 Long hole 50 Fixing pin A (Indicating rotation direction) Arrow B1, B2, B3 Bolt (fixing bracket)
G Ground P Upper surface of holder tube Q Clearance T Taper

Claims (3)

A connecting device for connecting a rotary penetrating pile to a rotating device provided at the tip of a plurality of joint arms or telescopic arms,
A holder pipe for connecting and fixing the upper end of the rotary penetrating pile;
A parallel flange disposed opposite to the upper surface of the holder tube;
And a prismatic member attached through this parallel flange,
On the upper surface of the holder tube, while providing a support hole into which the lower part of the prismatic member is fitted,
A long hole is drilled in either the parallel flange or the prism member,
By fixing the prism member through a fixing pin inserted through the long hole, the prism member is supported rotatably with respect to the upper surface of the holder tube,
When the prismatic member is pushed downward through the rotating device, the lower portion of the prismatic member is fitted into the support hole, and the rotational force of the rotating device is transmitted to the holder tube. Connection device for piles. The distance between the parallel flanges facing each other,
2. The connecting device for rotary penetrating piles according to claim 1, wherein the width dimensions of the prismatic members accommodated between the parallel flanges are substantially the same.   The connecting device for a rotary penetrating pile according to claim 1, wherein the support hole provided in the upper surface of the holder tube has a taper that expands upward.

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