JP2525575Y2 - Rotary buried pile holding device - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application field] The present invention is based on the idea that a pile is rotated and buried in a pile insertion hole formed in the construction ground, and a lower end portion of the pile is inserted into a required position of a solidification portion, and then a pile head is fixed at a predetermined position. The present invention relates to a rotary buried pile holding device that holds a pile in a suspended state until the pile is brought into a suspended state.

[0002]

2. Description of the Related Art When a pile is rotatably buried in a pile insertion hole formed in a construction ground, a pile head is inserted into a required position of a pile-consolidating portion built at a lower end of the pile insertion hole, and then a pile head is fixed. It is necessary to hold the pile in a suspended state until the pile is fixed at the position (that is, until the lower end of the pile is fixed to the rooting portion as required).

Conventionally, this holding has been performed using a heavy equipment a shown in FIG . The schematic configuration of the heavy equipment and the method of holding the pile by the heavy equipment will be described below.

That is, the heavy equipment a is provided with an auger motor d suspended vertically by a wire c on a tall support member b erected on the ground, and a rotating shaft of the auger motor d is provided on a rotating shaft of the auger motor d.
It is possible to selectively connect a drilling rod for drilling a pile insertion hole or a pile insertion rod for rotating and embedding a pile, and by using both rods properly, it is possible to perform both the work of excavating the pile insertion hole and the operation of rotating and embedding the pile. Things.

The pile insertion rod e has an upper end connected to the auger motor d and a lower end provided with a pile f.
Is provided with a cap g for chucking the head f1. As shown in FIG. 10 , the cap g has a cylindrical shape that is open downward and into which the pile head f1 can be inserted, and a lateral opening i is continuously provided on the peripheral surface at the upper end of the vertical opening h. An L-shaped locking opening j is provided.

[0006] Then, by inserting the pile head into the cap g,
An outwardly protruding locking pin k at the upper end of the pile head f1 is located at the upper end of the vertical opening h, and then the cap g
Makes a forward rotation F1 so that the locking pin k is moved to the side opening i.
And the pile head f1 is chucked. Conversely, when the cap g rotates in the reverse direction F2, the locking pin k is disengaged from the lateral opening i and the pile head f1
Is released from the chuck state.

However, after the pile head f1 is chucked to the cap g at the lower end of the pile insertion rod connected to the auger motor d, and the auger motor d is lowered while rotating the auger motor d in the normal rotation F1, the pile f is rotated and buried. The lower end of the pile f
2 is inserted into a required position of the root compaction m.

[0008] Thereafter, in order to fix the lower end portion f2 of the pile to the mounding portion m, the pile is held in a suspended state for a required time by a heavy machine.

[0009]

[Problems to be solved by the present invention] However, when a pile is held by using a heavy machine as described above, there is a problem that the pile laying accuracy is poor and that there is a problem that the heavy machine cannot be used efficiently. Was. That is,

Problems Regarding Construction Accuracy The time required to hold the pile with the pile lower end portion inserted in the rooting portion until the pile head is fixed at the required position must be set in accordance with the ground condition. . However, in the past, heavy equipment used for excavation of pile insertion holes and rotary embedding of piles was used for holding piles. Is usually set to about 20 minutes (the time when it was empirically thought that a certain amount of pile fixation was achieved), and after this time, the cap was removed from the pile head by reverse rotation of the auger motor. . For this reason, depending on the state of the ground, there were cases where piles could be firmly anchored, but piles often settled under their own weight afterwards, and the pile head position of each buried pile was not accurately aligned. There were many.

[0011] By the way, in the final burial state of the pile, if the cap that has chucked the pile head is exposed on the ground,
By visually observing the position of the locking pin in the lateral opening, the timing for releasing the chuck could be estimated for the time being. That is, FIG.
If the locking pin k is in contact with the lower edge n of the lateral opening as shown in FIG. 0 , it can be inferred that the pile is hung on the cap and fixing is incomplete. Conversely, if the locking pin k is in contact with the upper edge o of the lateral opening as shown by the one-dot chain line in FIG. 10 , the pile is not hung on the cap, and thus even if the chuck is released I was able to get a good idea.

However, if the cap is hidden in the pile insertion hole as shown in FIG. 9 in the final buried state of the pile, the position of the locking pin in the lateral opening cannot be visually observed. Had to decide when to release the chuck. As a result, the worst case where the pile was lifted when the cap was lifted with the intention of releasing the chuck sometimes occurred.

[0013] If the pile head position is not set as designed, after excavation of the ground, an expensive footing is constructed by cutting a pile higher than the design and reinforcing a low pile with a reinforcing bar. There was a significant uneconomic, such as having to do it.

Problems with Heavy Machinery Efficiency As described above, it took a relatively long time, usually about 20 minutes, to hold a pile by a heavy machine. If it can be used for excavation and rotary burial of piles, it is possible to improve the utilization efficiency of heavy equipment (including its operators) and to reduce the construction cost accordingly. There was much room for improvement in terms of construction costs.

An object of the present invention is to provide a rotary buried pile holding device capable of solving such problems.

[0016]

Means for Solving the Problems To solve the above problems, the present invention employs the following means.

That is, the holding device (hereinafter referred to as a holding device) of the rotary buried pile according to the present invention chucks the head 7 of the pile 6 at the lower end of the rod body 10 which is detachably connected to the auger motor of the heavy equipment and hangs down. has a chuck device 9, the pile insertion rod 2 is rotated about an axis perpendicular, supporting
A support body 5 installed on the ground via a base to support the pile insertion rod 2, and a rod body of the pile insertion rod 2
10 has a locking projection 11 protruding from its peripheral surface .
Then, the support 5 takes the rod body 10 in the circumferential direction.
The locking projection is provided on the inner surface side of the wall portion 30 of the surrounding cylindrical enclosure 29.
And a support portion 23 for supporting the portion 11 from below is provided.
Also, the outer surface of the wall of the enclosure 22 is slightly
An installation flange that protrudes outward at the part that retreated upward
The part 64 is formed along the circumferential direction of the enclosure, and
The portion below the installation flange 64 is connected to the pair of support bases.
Locking ring portion 22a fitted in a space between opposed support portions
The installation flange 64 can be mounted on the upper surface of the support base.
It is characterized in that the.

In the holding device, the support 5 is preferably configured as follows. As one aspect, a half cylinder
One end portions of the parts 31 and 32 are pivotally connected to each other so as to be openable and closable.
The other end portions of the half cylinder portions 31 and 32 are detachably connected to each other.
To allow the rod body 10 to pass therethrough
29 can be formed on the inner surface side of the wall 30 of the enclosure 29.
The support portion 23 that supports the locking projection 11 from below is
It is provided on the outer surface of the wall of the enclosure 22.
Is outward at a position that is slightly upward from the lower end.
An installation flange 64 is formed along the circumferential direction of the enclosure.
Of each of the half cylinder sections 20 and 21 so that
A flange is protruded from the outer surface, and the installation
The lower part of the support flange 64 is opposed to the support base.
A locking ring portion 29a to be fitted into the space between the support portions,
An example in which the installation flange portion 64 can be mounted on the upper surface of the support base can be given.

In another embodiment of the support, the support is fixed at both ends.
It has a pair of half-cylinder sections 69, 69 having pieces 70, 71.
And the fixed pieces at both ends are detachably connected to each other.
Forming an enclosure 29 through which the rod body 10 can be inserted.
The inner surface of the wall 30 of the enclosure 29 is
A support portion 23 for supporting the projection 11 from below is not provided.
In addition, the outer surface of the wall of the enclosure 22 has
Installation that protrudes outward at the part that has receded slightly above
The flange 64 is formed along the circumferential direction of the enclosure.
As shown in FIG.
It was set, than the installation brim portion 64 of the pre-SL enclosure
The lower part is a space between the opposing support parts of the support base.
And a locking ring 29a to be fitted into the
4 can be mounted on the upper surface of the support base .

In each of the holders, the locking projection 11 is
It is preferable to form it into a ring that is continuous in the circumferential direction.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. First Embodiment Referring to FIGS. 1 to 3, a holding device 1 according to the present invention includes a pile insertion rod 2, a pedestal 3, a support 4, and a support 5.

The pile insertion rod 2 has at its lower end a chuck device 9 (in this embodiment, a cap having the same configuration as shown in FIG. 10) for chucking the head 7 of the pile 6 . A circumferentially continuous annular locking projection 11 is provided on the peripheral surface of the rod body 10 at a required interval (for example, an interval of about 10 cm) in the vertical direction, and the upper end 2a is provided with an auger motor 12 of a heavy equipment. And is rotatable about a vertical axis.

The pedestal 3 is formed by projecting pedestal pieces 15, 15 in parallel at both ends of one side face of a rectangular frame 13.
5 and 15 are the open ends 1 of the pile insertion holes 16 provided in the ground.
7 is placed around the opening end with the sheet 7 interposed therebetween.

The support base 4 has support pieces 21 and 21 projecting in parallel from both ends of one side surface of the rectangular frame 20 . The pedestal pieces 15, 1 at the base-end portion and the tip-end portion.
5 supported.

The support 5 is opened as shown in FIGS.
It is a closed type, and one ends of the half cylinder portions 31 and 32 are mutually connected.
Pivotally openably and closably, and
The other ends can be detachably connected to each other.
In the state, the enclosure 2 through which the rod body 10 is inserted.
9 .

The half cylinder portion 31 is formed by projecting flange portions 35 and 36 at upper and lower end portions of the outer surface of the half arc piece 33 in the circumferential direction. The other half cylinder portion 32 has the same configuration,
The flange portions 39 and 40 are provided so as to protrude in the circumferential direction near the upper and lower ends of the outer surface portion of the half arcuate piece 37.

Then, the portions 41, 42 on one end side of the upper and lower flange portions of the half cylinder portion 31 overlap the outside portions 43, 45 on the one end side of the upper and lower flange portions of the other half cylinder portion 32. The upper and lower overlapping portions 46 and 47 can be opened and closed by a pivot 49 that passes through a shaft hole provided with a common hole center. Is pivoted to.

Also, the other half portions 50 and 51 of the upper and lower flange portions of the half cylinder portion 31 overlap the other end portions 53 and 55 of the upper and lower flange portions of the other half cylinder portion 32. In this state, the other end portions of the two half cylinder portions 31 and 32 are fitted with each other, and the handle 63 is inserted into the common through holes 59, 60, 61 and 62 provided in the upper and lower overlapping portions 56 and 57. Is detachably inserted into the connecting shaft 65 having the two ends, so that the other end portions of the half cylinder portions 31 and 32 are detachably connected to each other.
(FIG. 4) This forms the enclosure 29 through which the rod body 10 is inserted.

The enclosure 29 is retracted slightly upward from its lower end.
For the installation consisting of the flanges 36 and 40
A flange portion 64 is provided around the periphery, as shown in FIG.
Locks the portion of the body 29 below the installation flange 64
It becomes the ring portion 29a.

Further, three bearing bolts 66, 66, 66 are screwed into the upper and lower central portions (upper and lower central portions of the half-arc segments) of the peripheral surface of the enclosure 29 at an angle pitch of 120 degrees. . In this embodiment, one half cylinder portion 31 is
The two supporting bolts 66 are screwed into the other half-cylindrical portion 32.

However, the pile insertion hole 16 formed in the construction ground
The lower end part 25 is the required position of the root fixing part 26
The stake 6 (FIG. 1) inserted into the holder is
In order to hold the position using the device 1, the support 5 is
It is installed on the ground via the seat 3 and the support 4.

That is, the pedestal 3 is connected to a pair of pedestal pieces 15, 15.
So as to sandwich the open end 17 of the pile insertion hole 16
After being placed around the pile insertion hole 16, the support 4 is
The pair of support pieces (support portions in the present invention) 21 and 21 are locked.
And is substantially perpendicular to the pedestal pieces 15, 15.
To the base end and the tip
It is placed on the pedestal pieces 15, 15 at the shifted part.

Thereafter, as shown in FIG. 3 and FIG.
The cylinder parts 31 and 32 are taken around the rod body 10 in the circumferential direction.
And the locking ring portion 29a is
As shown in FIG.
The portion 64 is placed on the support pieces 21 and 21, and the other end portions of the half cylinder portions are connected to each other by the connection shaft 65 to form the enclosure 29.
I do. Thereby, on the inner surface side of the wall portion 30 of the enclosure 29, a support portion (support bolt) inserted between the locking protrusions 11 provided on the rod body and supporting the locking protrusion 11 from below. , 23, 23, 23 project, and, as shown in FIG. 3 , for example, the lower surface 11a of the locking projection is supported by the support portion 23, and the pile is held in a suspended state.

The pile 6 is held for a sufficient time so that the pile head 7
After being fixed at the fixed position, the support 5 and the rod body
The integrated state with 10 is released. The procedure is as follows.
Release the mutual connection of the ends by extracting 5
Do.

[ Second Embodiment] FIG. 7 is an explanatory view of a separation type support device 5, in which a pair of halves in which fixing pieces 70, 71 are bent outward at both ends of a half-arc segment 69. A pair of split cylinder portions 72, 73 is provided, and the fixed concave portions 70, 70, 7 with the curved concave surfaces 74, 74 inside.
1 and 71 are brought into contact with each other, and a bolt 75 is inserted into a common through hole provided in the fixed piece portion in the corresponding contact state, and a nut 76 is screwed into this to tighten the rod body. It is possible to form an enclosure 29 through which the base 10 can be inserted.

The wall of the enclosure 29 is provided with the first embodiment.
In the same manner as in
In this case, the installation flange portion projecting outward (Yes
Although not shown, the same as the installation flange 64 shown in FIG.
The half cylinder part 7 is formed along the circumferential direction of the body.
Each of the collars 2 and 73 (not shown, but shown in FIG. 5)
(Similar to the flanges 36 and 40 shown)
The lower part of the installation flange is a locking ring (shown in the figure).
Although not shown, the same as the locking ring portion 29a shown in FIG.
).

One bearing bolt 66 is screwed into the center of the peripheral surface of one half of the cylindrical portion 72.
Bearing bolts 66 and 66 are screwed into portions near both ends of the upper and lower central portions of the peripheral surface of the other half cylinder portion 73, and three bearing bolts 66 are attached to the wall 30 of the enclosure 29. ,
66, 66 are screwed at an angle pitch of 120 degrees. A portion on the distal end side of the bearing bolt protruding toward the inner surface side of the wall portion is a bearing portion 23, and as shown in FIG.
The locking projection 11 is supported from below by the support portion 23, and the pile is held in a suspended state. In addition, the support 5 has a rod body
Placed on the opposite support part of the support stand installed on the ground
Is placed.

However , the pile insertion hole 16 formed in the construction ground
The lower end part 25 is the required position of the root fixing part 26
The stake 6 (FIG. 1) inserted into the holder is
In order to maintain the state using the device 1, as shown in FIG.
In addition, the pair of half cylinder portions 72 and 73 are
Contacting the as fixing piece portions 70,70,71,71 each other sandwiching the
Then, the enclosure 29 is formed by bolting. This and
Then, the bearing bolt 66 is loosened. Then, the locking ring
Part into the space between the opposing support portions of the support base and
The installation flange is placed on the upper surface of the support base. After that, bearing bol
G, 66, 66, 66, and the bearing 23 between the locking projections.
When it is inserted and screwed in as required, the support part 23
11 is supported from below, and the pile 6 is stably held in a suspended state.
Is done. Hold the pile 6 for a sufficient time and the head of the pile is in the predetermined position
After being fixed to the support member 5 and the rod body 10,
Is released. The procedure is as follows.
It is performed after releasing the mutual connection.

Third Embodiment FIG. 8 shows a locking projection 11 provided on a rod body 10 on a wall 30 of an enclosure 29 formed as a cylindrical one as shown in FIG. An example of the support tool 5 in which a support portion 23 for supporting is protruded is illustrated. In this embodiment, the bearing 23 is used.
Is formed with a portion on the tip side of the bearing bolt 66. The wall of the enclosure 2a has the same structure as that of the first embodiment.
In the same way as above,
An outwardly projecting installation flange (not shown,
The same as the installation flange 64 shown in FIG.
And a lower side of the enclosure than the flange portion.
Is a locking flange (not shown, but shown in FIG. 3).
(Similar to the locking flange 29a).

However, the pile insertion hole 16 formed in the construction ground
The lower end part 25 is the required position of the root fixing part 26
The stake 6 (FIG. 1) inserted into the holder is
In order to hold it in that state using the device 1, the rod body must be turned off.
Before connecting to the motor, the rod
The body 10 is inserted. At this time, the bearing bolt 6
Loosen 6 Then, the locking ring portion is opposed to the support base.
Fits into the space between the supporting parts and supports the installation flange
Place on the table top. After that, the bearing bolts 66, 66, 6
6 with its support 23 inserted between the locking projections 11, 11.
When tightened and screwed in as required, the support portion 23
Is supported from below, and the pile 6 is stably held in a suspended state.
You. Hold the pile 6 for a sufficient time and fix the pile head in place.
After the fixed state , one of the support tool 5 and the rod body 10 is
Release the embodied state. The procedure is to loosen the pressing bolt 66
First, the support 5 is placed on the chuck device.

[0041]

[Effect of the invention]  The holding device according to the present invention is as described above.
Because it is configured inInstalled on the ground via the support
Attach support to rod bodyAfter that, the support tool is
With it placed,Support the locking projection with the support
The lower end of the pile is inserted into the required position of the
The inserted piles must be maintained and maintained
Can be. Therefore, adjust the position of the pile head of the buried pile as designed.
It can be set up frequently, and the pile burial construction management can be performed reliably.
it can.

This will be described more specifically as follows. In other words, the present invention is a part that retreats slightly upward from the lower end of the enclosure.
An installation flange portion, and the installation flange portion of the enclosure is provided.
The lower part is defined as a locking ring. as a result,

1) This locking ring portion is supported by the support base in opposition.
When inserted into the space between the portions, the locking ring and the support portion
Due to the engagement in contact with the inner surface, even if the upper surface of the support
When there is a danger that the enclosure may skid
Also, this side slip can be reliably prevented.

2) When the upper surface of the support is inclined,
However, as described above, it is necessary to
From the above, the installation flange is supported by the support
There is no danger of falling off.

3) In addition, the height between the support base and the installation flange portion
Even when the adjustment piece is interposed, the enclosure can be supported stably.
You. Due to the synergistic action of 1), 2) and 3), rotation
Stable retention of buried piles by maintaining their verticality correctly
You can.

When using the holding device according to the present invention
Since the pile insertion rod is securely held via the support , the pile insertion rod in the held state can be separated from the auger motor. Therefore, the heavy equipment can continuously perform the original work such as the excavation of the pile insertion hole and the rotary burial of the pile, and the utilization efficiency of the heavy equipment can be improved, thereby improving the construction efficiency and reducing the construction cost. It will be.

[Brief description of the drawings]

FIG. 1 is an explanatory view illustrating a holding state of a pile by a holding device according to the present invention.

FIG. 2 is a perspective view illustrating a holding device in a state of use.

FIG. 3 is a cross-sectional view illustrating a holding state of a pile by a holding device.

FIG. 4 is a perspective view showing an openable / closable holding tool.

FIG. 5 is a perspective view showing a state where an openable / closable holding tool is opened.

FIG. 6 is a plan view illustrating a state in which a pile insertion rod is supported using an openable / closable holding tool.

FIG. 7 is a plan view illustrating a state in which a pile insertion rod is supported using a separation-type holder.

FIG. 8 is a perspective view illustrating a holder having an enclosure configured as a tubular unit.

FIG. 9 is an explanatory view illustrating a conventional method of holding a pile by a heavy machine.

FIG. 10 is an explanatory view illustrating a chuck portion of a pile in a conventional pile holding.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 holding device 2 pile insertion rod 4 support base 5 support 6 pile 7 pile head 9 chuck device 10 rod body 11 locking projection 16 pile insertion hole 17 open end 21 support piece 23 support portion 29 enclosure 29a locking Ring part 30 Wall part 31 Half cylinder part 32 Half cylinder part 64 Flange part for installation 69 Half cylinder part 70 Fixed piece part 71 Fixed piece part

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-169524 (JP, A) JP-A-59-199914 (JP, A) JP-A-51-128804 (JP, A) JP-A-59-1999 27030 (JP, A) Japanese Utility Model 3-21452 (JP, U) Japanese Utility Model 59-144046 (JP, U) Japanese Utility Model 52-119268 (JP, U)

Claims (4)

(57) [Scope of request for utility model registration] At the lower end of a rod body detachably connected to an auger motor of a heavy machine and hanging therefrom, a lower end of a rod body is provided with a chucking device for chucking a head portion of a pile, and a pile insert is rotated about a vertical axis. A rod 2 and a support 5 installed on the ground via a support to support the pile insertion rod 2
And the rod body 10 of the pile insertion rod 2 is engaged with the peripheral surface thereof.
A stop projection 11 is provided in a projecting manner, and the support 5 is a cylinder surrounding the rod body 10 in a circumferential direction.
The locking projection 11 is provided on the inner surface side of the wall 30 of the box-shaped enclosure 29.
A support portion 23 is provided to support the housing 22 from below, and the outer surface of the wall of the enclosure 22 is slightly extended from its lower end.
An installation flange that protrudes outward at the part that retreated upward
The part 64 is formed along the circumferential direction of the enclosure, and
The portion below the installation flange 64 is connected to the pair of support bases.
Locking ring portion 29a to be fitted in a space between opposed support portions
The installation flange 64 can be mounted on the upper surface of the support base.
A rotating buried pile holding device, characterized in that: 2. A lower part of a rod body 10 which is detachably connected to an auger motor of a heavy machine and has a chucking device 9 for chucking a head 7 of a pile 6 at a lower end thereof, and a pile insert which is rotated about a vertical axis. A rod 2 and a support 5 installed on the ground via a support to support the pile insertion rod 2
Comprising the door, the rod main body 10 of該杭insertion rod 2 is made by the locking projection 11 is projected on the peripheral surface, the bearing member 5, one end portion each other half cylindrical portions 31 and 32
The other end portions of the half-cylinder portions 31 and 32 are pivotally attached to be able to open and close.
The rod body is detachably connected to each other,
10 can be formed, and the
On the inner surface side of the wall portion 30, the locking projection 11 is
A supporting portion 23 for supporting is protruded, and the outer surface of the wall of the enclosure 22 is slightly extended from its lower end.
An installation flange that protrudes outward at the part that retreated upward
The portion 64 is formed along the circumferential direction of the enclosure.
A flange is protruded from the outer surface of each of the half cylinders 20 and 21.
And it will be, below the installation brim portion 64 of the enclosure
Side part in the space between the opposing support parts of the support base.
The engagement collar portion 29a to be fitted thereinto,
A rotating buried pile holding device characterized in that it can be mounted on the upper surface of a support base . 3. A lower part of a rod body 10 which is detachably connected to an auger motor of a heavy equipment and has a chucking device 9 for chucking a head 7 of a pile 6 at a lower end thereof, and a pile insert rotated about a vertical axis. A rod 2 and a support 5 installed on the ground via a support to support the pile insertion rod 2
The rod body 10 of the stake insertion rod 2 has a locking projection 11 projecting from the peripheral surface thereof. The support 5 has fixing pieces 70, 71 at both ends.
It has a pair of half cylinders 69, 69
By connecting detachably, the rod body 10
An enclosure 29 to be inserted can be formed, and a wall of the enclosure 29 can be formed.
On the inner surface side of the support 30, the locking projection 11 is supported from below.
A support portion 23 is provided to project from the lower end of the outer surface of the wall of the enclosure 22.
An installation flange that protrudes outward at the part that retreated upward
The portion 64 is formed along the circumferential direction of the enclosure.
As shown in FIG.
Of the enclosure below the installation flange 64.
In the space between the opposing support portions of the support base.
The engaging collar portion 29a to be embedded is
A rotating buried pile holding device characterized in that it can be mounted on the upper surface of a support base . 4. The locking projection 11 has an annular shape that is continuous in the circumferential direction.
4. A method according to claim 1, wherein
A device for holding a rotary buried pile according to any of the claims.