JP2017031589A - Plier recovery device and plier recovery method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plier recovery device and a method capable of recovering a plier connected to a pile buried under a construction reference surface without using a pile driving machine.SOLUTION: A plier recovery device 1A comprises a connection part 4 relatively nonrotatably connectable to an upper part of a plier 2A, a central part 6 integrally rotatable with the connection part around the axis of the plier, a motor 8 having an output shaft 14 connectable to the central part 6 and a motor housing 16 rotatably supporting the output shaft 14 and a reaction receiving part 10 constituted so as to receive reaction of acting on the motor housing 16 when the output shaft 14 transmits torque to the central part 6, and the reaction receiving part 10 is constituted so as to extend along the radial direction of the plier 2A in a state of connecting the connection part to the upper part of the plier 2A when viewed in the direction along the axis and to separably abut in the circumferential direction of the plier 2A on an object of existing around the plier 2A when the output shaft 14 of the motor 8 transmits the torque to the central part 6.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a Yatco collection device and a Yatco collection method.

  In a cement milk method or the like which is a kind of pre-boring method, a ready-made pile is laid in a state where cement milk is stored in a hole excavated in advance. In the cement milk construction method, when the pile head is embedded below the ground surface (construction reference plane), Yatsuko is used as a member for temporarily extending the length of the pile.

  The lower end side of the yatco is engaged with the pile head by rotating the yatco around the axis using, for example, a pile driving machine. And the lower end side of the yatco is pushed into the pile hole by pushing the yat engaged with the pile head with the pile driving machine, and thereby the pile head is buried below the construction reference plane. Then, after the peripheral surface frictional force and the tip support force are developed (the extent that pile settlement does not occur), the yatco is rotated around the axis in the opposite direction using a pile driving machine, so that the Release the engagement, and lift only the Yatsuko, leaving the pile.

JP 2013-234450 A

  In order to prevent the pile from self-settling until the peripheral frictional force and the tip support force are developed, the Yatco is left in engagement with the pile head. On the other hand, in order to use the pile driving machine for other piles during this period, only the pile driving machine is moved by separating the pile driving machine from the yatco. Then, after the peripheral surface friction force and the tip support force are developed, the pile driver is moved to the original position, the remaining Yatco is coupled, and the pile and Yatco are disengaged using the pile driver.

  Therefore, when laying a plurality of piles, the pile driving machine had to reciprocate between the plurality of pile holes. For this reason, the pile laying work using the Yatco is time-consuming and complicated. Moreover, when a pile driving machine is used to release the engagement of the Yatco, there is a problem that the pile driving operation is stopped and the construction period becomes long.

  In view of the above circumstances, the purpose of at least one embodiment of the present invention is to provide a Yatco collecting device capable of collecting a Yatco connected to a pile embedded below the construction reference plane without using a pile driving machine, and It is to provide a method.

(1) A Yatco collection device according to at least one embodiment of the present invention comprises:
A connecting portion that can be connected to the upper portion of the Yatco so as not to be relatively rotatable;
A central portion that is disposed on the axis of the yatco in a state in which the connecting portion is coupled to the upper portion of the yatco, and that can rotate integrally with the coupling unit around the axis;
A motor having an output shaft connectable to the central portion and a motor housing that rotatably supports the output shaft;
A reaction force receiving portion configured to receive a reaction force acting on the motor housing when the output shaft transmits torque to the central portion;
With
The reaction force receiving portion extends along a radial direction of the yatco in a state where the connecting portion is coupled to an upper portion of the yatco when viewed in a direction along the axis, and the output shaft of the motor is the center When the torque is transmitted to the part, it is configured to come into contact with an object existing around the yatco in a separable manner in the circumferential direction of the yatco.

  According to the said structure (1), the engagement of a pile and a Yatco can be cancelled | released by rotating a Yatco with respect to a pile by a Yatco collection | recovery apparatus. For this reason, it is not necessary to use a pile driving machine in order to collect the Yatco, and as a whole, the pile setting work is facilitated, and the construction period can be shortened.

(2) In some embodiments, in the configuration (1),
The Yatco collection device further includes a bearing device fixed to the motor housing and supporting the output shaft so as to be relatively rotatable,
The reaction force receiving portion includes a rotation preventing member connected to the motor housing or the bearing device.

According to the said structure (2), the engagement of a pile and a Yatco can be easily cancelled | released by rotating a Yatco with respect to a pile with a motor.
On the other hand, by receiving the reaction force acting on the motor housing by the rotation preventing member, the engagement between the pile and the Yatco can be reliably released.

(3) In some embodiments, in the configuration (2),
The detent member is detachably connected to the motor housing or the bearing device.
According to the configuration (3), the rotation preventing member can be separated from the motor housing or the bearing device, and the handling of the Yatco collecting device is easy.

(4) In some embodiments, in the configuration (2) or (3),
The anti-rotation member has an I shape, a T shape, an L shape, or a U shape.
According to the configuration (4), since the rotation preventing member has a simple shape such as an I shape, a T shape, an L shape, or a U shape, the configuration of the Yatco collecting device can be simplified.

(5) In some embodiments, in any one of the above configurations (1) to (4),
The connecting portion has a disk portion that can be coaxially disposed on the top of the Yatco,
The disc portion can be connected to the Yatco by a pin or a bolt,
The disk portion has a plurality of holes through which the pins or bolts can be inserted at different positions in the radial direction of the disk portion.
According to the said structure (5), a common disc part can be used with respect to several Yatco of a different diameter, and a Yatco collection | recovery apparatus has high versatility.

(6) The Yatco collection device according to at least one embodiment of the present invention is:
A connecting portion connectable to the top of the Yatco;
A central portion that is disposed on the axis of the yatco in a state in which the connecting portion is coupled to the upper portion of the yatco, and that can rotate integrally with the coupling unit around the axis;
A torque transmitting part connected to the central part and configured to transmit torque around the axis to the central part;
The torque transmission part is constituted by a rod extending from the central part along the radial direction of the yatco in a state where the coupling part is coupled to the upper part of the yatco.

  According to the configuration (6), by using the rod as the torque transmission unit, the Yatco recovery device can be realized with a simple configuration.

(7) The Yatco collection method according to at least one embodiment of the present invention includes:
A Yatco collection device preparation process for preparing a Yatco collection device,
A connecting portion connectable to the top of the Yatco;
A central portion that is disposed on the axis of the yatco in a state in which the connecting portion is coupled to the upper portion of the yatco, and that can rotate integrally with the coupling unit around the axis;
A motor having an output shaft connectable to the central portion and a motor housing that rotatably supports the output shaft;
A reaction force receiving portion configured to receive a reaction force acting on the motor housing when the output shaft transmits torque to the central portion;
With
The reaction force receiving portion extends along a radial direction of the yatco in a state where the connecting portion is coupled to an upper portion of the yatco when viewed in a direction along the axis, and the output shaft of the motor is the center Preparation of Yatco Collection Device Prepared for Yatco Collection Device configured to contact separably in the circumferential direction of Yatco when transmitting torque to the part Process,
A Yatco recovery device connection step for engaging the connection part of the Yatco recovery device with the upper portion of the Yatco connected to the laid pile,
A torque engagement releasing step of transmitting torque around the axis to the central portion by the output shaft of the motor, and releasing the engagement between the yarn and the pile;
A lifting step of lifting up the yatco and separating the yatco from the pile.

  According to the said structure (7), engagement of a pile and a Yatco can be cancelled | released by rotating a Yatco with respect to a pile by a Yatco collection | recovery apparatus. For this reason, it is not necessary to use a pile driving machine in order to collect the Yatco, and as a whole, the pile setting work is facilitated, and the construction period can be shortened.

(8) In some embodiments, in the configuration (7),
The reaction force receiving portion has a detent member fixed to the motor housing or the bearing device,
In the step of releasing the hook, the construction machine separate from the hook collecting device is brought into contact with the detent member.

According to the said structure (8), engagement of a pile and a Yatco can be easily cancelled | released by rotating a Yatco with respect to a pile with a motor.
On the other hand, by receiving the reaction force acting on the motor housing by the rotation preventing member, the engagement between the pile and the Yatco can be reliably released.
Then, in the Yatco engagement releasing step, the reaction force acting on the motor housing can be easily and surely received by bringing the anti-rotation member into contact with the construction machine separate from the motor.

(9) The Yatco collection method according to at least one embodiment of the present invention includes:
A Yatco collection device preparation process for preparing a Yatco collection device,
A connecting portion connectable to the top of the Yatco;
A central portion that is disposed on the axis of the yatco in a state in which the connecting portion is coupled to the upper portion of the yatco, and that can rotate integrally with the coupling unit around the axis;
A torque transmitting part connected to the central part and configured to transmit torque around the axis to the central part;
The torque transmission unit is a Yatco recovery device that provides a Yatco recovery device, which is composed of a rod extending from the central portion along the radial direction of the Yatco in a state where the connecting portion is connected to the upper portion of the Yatco. A preparation process;
A Yatco recovery device connection step for engaging the connection part of the Yatco recovery device with the upper portion of the Yatco connected to the laid pile,
A hook engagement releasing step of transmitting torque around the axis to the central portion by pushing the radially outer portion of the rod, and releasing the engagement between the yoke and the pile;
A lifting step of lifting up the yatco and separating the yatco from the pile.

  According to the said structure (9), engagement of a pile and a Yatco can be cancelled | released by rotating a Yatco with respect to a pile by a Yatco collection | recovery apparatus. For this reason, it is not necessary to use a pile driving machine in order to collect the Yatco, and as a whole, the pile setting work is facilitated, and the construction period can be shortened.

  According to at least one embodiment of the present invention, there is provided a Yatsuko collecting device and method capable of collecting a Yatco connected to a pile embedded below a construction reference plane without using a pile driving machine.

It is a side view showing roughly the composition of the Yatco collection device concerning one embodiment of the present invention with the upper part of the Yatco. FIG. 2 is a schematic side view of the Yatco collecting device viewed from the direction of arrow A in FIG. 1. It is a schematic exploded view of the Yatco collection device of FIG. It is a side view which shows roughly the Yatco collection | recovery apparatus which concerns on other one Embodiment. It is a schematic exploded view of the Yatco collection device of FIG. It is a side view which shows schematically the structure of the Yatco collection | recovery apparatus which concerns on other one embodiment with the upper part of a Yatco. It is a top view which shows roughly the structure of the connection part applicable to a Yatco collection | recovery apparatus. The schematic structure of the Yatco collection | recovery apparatus which concerns on other one Embodiment of this invention is shown, (a) is a top view, (b) is a side view. It is a flowchart which shows the schematic procedure of the cat collection method which concerns on one Embodiment of this invention. It is a figure for demonstrating the Yatco collection | recovery apparatus connection process of the Yatco collection method. It is a figure for demonstrating the yatco cancellation | release process of the yatco collection method. It is a figure for demonstrating the Yatsuko lifting process of the Yatco collection method. It is a figure for demonstrating the yatco engagement cancellation | release process at the time of using another yatco collection | recovery apparatus.

Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. Absent.
For example, expressions expressing relative or absolute arrangements such as “in a certain direction”, “along a certain direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial” are strictly In addition to such an arrangement, it is also possible to represent a state of relative displacement with an angle or a distance such that tolerance or the same function can be obtained.
For example, an expression indicating that things such as “identical”, “equal”, and “homogeneous” are in an equal state not only represents an exactly equal state, but also has a tolerance or a difference that can provide the same function. It also represents the existing state.
For example, expressions representing shapes such as quadrangular shapes and cylindrical shapes represent not only geometrically strict shapes such as quadrangular shapes and cylindrical shapes, but also irregularities and chamfers as long as the same effects can be obtained. A shape including a part or the like is also expressed.
On the other hand, the expressions “comprising”, “comprising”, “comprising”, “including”, or “having” one constituent element are not exclusive expressions for excluding the existence of the other constituent elements.

  FIG. 1 is a side view schematically showing a configuration of a Yatco collecting apparatus 1A according to an embodiment of the present invention, together with an upper part of Yatco 2A. FIG. 2 is a schematic side view of the Yatco collecting apparatus 1A viewed from the direction of arrow A in FIG. FIG. 3 is a schematic exploded view of the Yatco collecting apparatus 1A. FIG. 4 is a side view schematically showing a Yatco collecting apparatus 1B according to another embodiment. FIG. 5 is a schematic exploded view of the Yatco collecting apparatus 1B. FIG. 6 is a side view schematically showing the configuration of the Yatco collecting apparatus 1C according to another embodiment together with the upper part of the Yatco 2B.

As shown in FIGS. 1 to 6, the Yatco collecting apparatuses 1 </ b> A, 1 </ b> B, and 1 </ b> C include a connecting portion 4, a central portion 6, a motor 8, and a reaction force receiving portion 10.
The connecting portion 4 can be connected to the upper portions of the Yatsuko 2A and 2B for sinking piles so as not to rotate relative to each other.
The central portion 6 is disposed on the axis 12 of the Yattcos 2A and 2B in a state where the connecting portion 4 is connected to the upper portions of the Yatcos 2A and 2B, and can be rotated integrally with the connecting unit 4 around the axis 12.

  The motor 8 has an output shaft 14 and a motor housing 16. The output shaft 14 can be connected to the central portion 6, and can be coaxially connected to the Yatsuko 2 </ b> A and 2 </ b> B via the central portion 6 and the connecting portion 4. Therefore, in the state where the Yatco collecting devices 1A, 1B, 1C are connected to the Yatco 2A, 2B, the axis 12 of the Yatco 2A, 2B coincides with the axis of the output shaft 14. The motor housing 16 supports the output shaft 14 rotatably.

The reaction force receiving portion 10 is configured to receive a reaction force acting on the motor housing 16 when the output shaft 14 of the motor 8 transmits torque to the central portion 6.
When viewed in the direction along the axis 12, the reaction force receiving portion 10 extends along the radial direction of the yats 2A and 2B in a state where the connecting portion 4 is connected to the upper portions of the yats 2A and 2B. When the output shaft 14 of the motor 8 is transmitting torque to the central portion 6, the reaction force receiving portion 10 is separable in the circumferential direction of the yatcos 2A and 2B with respect to objects existing around the yatcos 2A and 2B. It is comprised so that it may contact | abut.

According to the said structure, the engagement of a pile and Yatco 2A, 2B can be cancelled | released by rotating Yatco 2A, 2B with respect to a pile by Yatco collection | recovery apparatus 1A, 1B. For this reason, it is not necessary to use a pile driving machine in order to collect the Yatco 2A, 2B, and as a whole, the pile setting work is facilitated, and the construction period can be shortened.
In addition, if the thing which the reaction force receiving part 10 contact | abuts can receive a reaction force, it will not specifically limit. For example, the reaction force receiving portion 10 may be brought into contact with the bucket of the backhoe.

  In some embodiments, the motor 8 is constituted by an electric motor or a hydraulic motor. The hydraulic source in the case of using a hydraulic motor is not particularly limited, but when the reaction force receiving portion 10 is brought into contact with the bucket of the backhoe, the backhoe may be used as the hydraulic source.

In some embodiments, as shown in FIGS. 1 to 6, the Yatco collecting devices 1A, 1B, and 1C further include a bearing device 18, and the reaction force receiving portion 10 includes anti-rotation members 20A and 20B. .
The bearing device 18 is fixed to the motor housing 16 and supports the output shaft 14 so as to be relatively rotatable. The rotation preventing members 20 </ b> A and 20 </ b> B are directly or indirectly connected to the bearing device 18. The rotation preventing members 20 </ b> A and 20 </ b> B may be connected to the motor housing 16.

According to the said structure, the engagement of a pile and Yatco 2A, 2B can be easily cancelled | released by rotating Yatco 2A, 2B with respect to a pile with the motor 8. FIG.
On the other hand, by receiving a reaction force acting on the motor housing 16 by the rotation preventing members 20A and 20B, the engagement between the pile and the Yatco 2A and 2B can be reliably released.

In some embodiments, as shown in FIGS. 3 and 5, the detent members 20 </ b> A and 20 </ b> B are separably connected to the bearing device 18. The rotation preventing members 20 </ b> A and 20 </ b> B may be detachably connected to the motor housing 16.
According to the above configuration, the rotation preventing members 20A and 20B can be separated from the motor housing 16 or the bearing device 18, and the handling of the Yatco collecting devices 1A, 1B, and 1C is easy.

  In some embodiments, the Yatco collecting apparatuses 1A, 1B, and 1C further include cover members 21A and 21B that cover at least part of the surfaces of the rotation preventing members 20A and 20B. Damage to the anti-rotation members 20A and 20B can be suppressed by the cover members 21A and 21B.

In some embodiments, as shown in FIGS. 1 to 3 and 6, the anti-rotation member 20 </ b> A has an I-shape.
In some embodiments, as shown in FIGS. 4 and 5, the detent member 20B has an L-shape.
In some embodiments, although not shown, the anti-rotation member may have a T shape or a U shape.

  According to the above configuration, since the rotation preventing members 20A and 20B have a simple shape such as an I shape, a T shape, an L shape, or a U shape, the configuration of the Yatco collecting apparatuses 1A and 1B can be simplified. Can do.

  In some embodiments, as shown in FIGS. 3 and 5, the connecting portion 4 and the central portion 6 are detachably connected to the output shaft 14 of the motor 8.

  In some embodiments, as shown in FIGS. 1 to 6, the bearing device 18 is positioned below the motor housing 16 in a state where the Yatco collecting devices 1A and 1B are connected to the Yatco 2A and 2B. . A frame 22 is attached to the bearing device 18 so as to surround the motor housing 16. A shackle 23 is attached to the upper portion of the frame 22 to suspend the Yatco collecting devices 1A and 1B.

In some embodiments, as shown in FIGS. 1 to 3 and 6, the anti-rotation member 20 </ b> A is attached to the bearing device 18 and disposed below the motor housing 16.
In some embodiments, as shown in FIGS. 4 and 5, the detent member 20 </ b> B is attached to the frame 22 and disposed above the motor housing 16.

In some embodiments, as shown in FIGS. 1 to 6, the one or more detent members 20 </ b> A and 20 </ b> B are disposed rotationally symmetrically about the axis 12 when viewed in the direction along the axis 12. .
In some embodiments, as shown in FIGS. 1 to 6, the central portion 6 is constituted by a protruding portion that protrudes from the connecting portion 4, but is constituted by a recessed portion that is recessed with respect to the connecting portion 4. Also good.

  FIG. 7 is a plan view schematically showing the configuration of the connecting portion 4 applicable to the Yatco collecting apparatuses 1A and 1B. As shown in FIG. 7, in some embodiments, the connecting portion 4 includes a disc portion 24 that can be coaxially disposed on the top of the YATCO 2A. The disc portion 24 can be connected to the YATCO 2A by a pin or bolt 25 (see FIG. 1), and the disc portion 24 has a pin or bolt 25 at a different position in the radial direction of the disc portion 24, respectively. It has a plurality of holes 26 that can be inserted.

  According to the said structure, the common disc part 24 can be used with respect to several YATCO 2A which has a different diameter, and YATCO collection | recovery apparatus 1A, 1B has high versatility.

In some embodiments, as shown in FIG. 6, the connecting portion 4 includes a cylindrical cup portion 27 that is open at one end. The cup portion 27 has an L-shaped, T-shaped or I-shaped groove 28 on the opening side, and the central portion 6 is integrally provided at the center of the bottom wall of the cup portion 27. The cup part 27 can receive the upper part of the YATCO 2B, and the groove 28 can receive the protrusion 29 provided on the outer peripheral surface of the YATCO 2B.
According to the said structure, the connection part 4 can be easily engaged with the Yatco 2B so that relative rotation is impossible only by covering the upper part of the Yatco 2B and rotating it. 6 is rotated in one direction with respect to the yatco 2B, the projection 29 collides with the edge of the groove 28, thereby restricting relative rotation of the connecting unit 4 with respect to the yatco 2B. .
In addition, the shape of the connection part 4 is not limited to FIG. 1 thru | or FIG. 6, It can select suitably according to Yatco.

FIG. 8 shows a schematic configuration of a Yatco collecting apparatus 1D according to another embodiment of the present invention, in which (a) is a plan view and (b) is a side view.
The Yatco collecting apparatus 1D includes a connecting part 4, a central part 6, and a torque transmitting part 30.
The connecting portion 4 can be connected to the upper portion of the YATCO 2A for sinking a pile so as not to be relatively rotatable.
The central portion 6 is disposed on the axis 12 of the YATCO 2A in a state where the connecting portion 4 is connected to the upper portion of the YATCO 2A, and can be rotated integrally with the connecting portion 4 around the axis 12.
The torque transmission part 30 is connected to the central part 6 and configured to be able to transmit torque around the axis 12 of the YATCO 2A to the central part 6. The torque transmission part 30 is comprised by the rod 31 extended from the center part 6 along the radial direction of the YATCO 2A in the state in which the connection part 4 was connected to the upper part of the YATCO 2A.

  According to the above configuration, by using the rod 31 as the torque transmission unit 30, the Yatco recovery device 1D can be realized with a simple configuration.

  FIG. 9 is a flowchart showing a schematic procedure of a method for collecting a cat according to an embodiment of the present invention. 10 to 12 are diagrams for explaining each step of the Yatco collection method.

  As shown in FIG. 9, the Yatco collection method includes a Yatco collection device preparation step S1, a Yatco collection device connection step S3, a Yatco engagement release step S5, and a Yatco lifting step S7. In the following description, the case collection method will be described by taking the case of using the case collection device 1A as an example, but the case collection devices 1B, 1C, and 1D can also be used.

In the Yatco collection device preparation step S1, a Yatco collection device 1A is prepared.
In the Yatco collection device coupling step S3, as shown in FIG. 10, the Yatco collection device 1A is coupled to the Yatco 2A.

In the Yatchco engagement releasing step S5, as shown in FIG. 11, the Yatsuko 2A and the pile 32 are released from engagement by rotating the Yachco 2A by the Yachko collecting device 1A.
The Yatco 2A and the pile 32 are engaged with each other by, for example, fitting a protrusion 36 provided on the pile 32 into an L-shaped or T-shaped groove 34 provided on the lower end of the Yatco 2A. doing. The pile 32 is, for example, a steel pipe pile or an SC pile.
In the YATCO lifting step S7, the YATCO 2A is pulled up by the crane 38, for example, and the YATCO 2A is separated from the pile 32.

  According to the said structure, the engagement of the pile 32 and Yatco 2A, 2B can be cancelled | released by rotating Yatco 2A, 2B with respect to the pile 32 by Yatco collection | recovery apparatus 1A, 1B, 1C, 1D. For this reason, it is not necessary to use a pile driving machine in order to collect the Yatco 2A, 2B, and as a whole, the setting work of the pile 32 is facilitated, and the construction period can be shortened.

In some embodiments, Yatco collection devices 1A, 1B, and 1C are prepared in Yatco collection device preparation step S1. When using the Yatco collecting devices 1A, 1B, 1C, the Yatco 2A, 2B can be rotated through the central portion 6 and the connecting portion 4 by operating the motor 8. At this time, as illustrated in FIG. 11, the anti-rotation members 20 </ b> A and 20 </ b> B can receive a reaction force by abutting against the backhoe bucket 40.
When two L-shaped anti-rotation members 20B are used, as shown in FIG. 13, the anti-rotation member 20B is brought into contact with the bucket 40 by disposing the bucket 40 between the anti-rotation members 20B. You can contact and receive reaction force.

According to the said structure, the engagement of the pile 32 and the Yatco 2A, 2B can be easily cancelled | released by rotating the Yatco 2A, 2B with respect to the pile 32 with the motor 8. FIG.
On the other hand, by receiving the reaction force acting on the motor housing 16 by the anti-rotation members 20A and 20B, the engagement between the pile 32 and the Yatcos 2A and 2B can be reliably released.
In the Yatco engagement releasing step S5, the anti-rotation members 20A and 20B are brought into contact with the construction machine separate from the motor 8 so that the reaction force acting on the motor housing 16 can be easily and reliably received.

  In some embodiments, the Yatco collection device 1D is prepared at the Yatco collection device preparation step S1. When the Yatco collecting device 1D is used, for example, the operator can rotate the Yatco 2A by pressing the radially outer portion of the rod 31 in the circumferential direction of the Yatco 2A.

  In some embodiments, the Yatco collection method further includes a Yatco collection device removal step between the Yatco engagement release step S5 and the Yatco lifting step S7. In the Yatco collecting device removing step, Yatco collecting devices 1A, 1B, and 1C are separated from Yatco 2A and 2B and removed. In this case, as shown in FIG. 12, only the yatcos 2 </ b> A and 2 </ b> B are lifted from the pile 32 in the yatco lifting step S <b> 7.

  Finally, the present invention is not limited to the above-described embodiments, and includes forms obtained by modifying the above-described embodiments and forms obtained by appropriately combining these forms.

1A, 1B, 1C, 1D Yatco collecting device 2A, 2B Yatco 4 Connecting portion 6 Central portion 8 Motor 10 Reaction force receiving portion 12 Axis 14 Output shaft 16 Motor housing 18 Bearing devices 20A, 20B Non-rotating members 21A, 21B Cover member 22 Frame 23 Shackle 24 Disk part 25 Bolt 26 Hole 27 Cup part 28 Engagement groove 29 Projection 30 Torque transmission part 31 Rod 32 Pile 34 Groove 36 Projection 38 Crane 40 Bucket

Claims (9)

A connecting portion that can be connected to the upper portion of the Yatco so as not to be relatively rotatable;
A central portion that is disposed on the axis of the yatco in a state in which the connecting portion is coupled to the upper portion of the yatco, and that can rotate integrally with the coupling unit around the axis;
A motor having an output shaft connectable to the central portion and a motor housing that rotatably supports the output shaft;
A reaction force receiving portion configured to receive a reaction force acting on the motor housing when the output shaft transmits torque to the central portion;
With
The reaction force receiving portion extends along a radial direction of the yatco in a state where the connecting portion is coupled to an upper portion of the yatco when viewed in a direction along the axis, and the output shaft of the motor is the center When the torque is transmitted to the section, the Yatco collecting device is configured to come into contact with an object existing around the Yatco so as to be separable in the circumferential direction of the Yatco. A bearing device fixed to the motor housing and supporting the output shaft in a relatively rotatable manner;
The said reaction force receiving part has a rotation prevention member connected to the said motor housing or the said bearing apparatus, The yatco collection | recovery apparatus of Claim 1 characterized by the above-mentioned. The said rotation prevention member is connected to the said motor housing or the said bearing apparatus so that isolation | separation is possible, The Yatsuko collection | recovery apparatus of Claim 2 characterized by the above-mentioned. The said rotation prevention member has I character shape, T character shape, L character shape, or U character shape, The Yatco collection | recovery apparatus of Claim 2 or 3 characterized by the above-mentioned. The connecting portion has a disk portion that can be coaxially disposed on the top of the Yatco,
The disc portion can be connected to the Yatco by a pin or a bolt,
The said disc part has a some hole which can each penetrate the said pin or volt | bolt in the position which is different in the radial direction of the said disc part, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. Yatco collection device. A connecting portion connectable to the top of the Yatco;
A central portion that is disposed on the axis of the yatco in a state in which the connecting portion is coupled to the upper portion of the yatco, and that can rotate integrally with the coupling unit around the axis;
A torque transmitting part connected to the central part and configured to transmit torque around the axis to the central part;
The said torque transmission part is comprised by the rod extended from the said center part along the radial direction of the said yatco in the state in which the said connection part was connected with the upper part of the said yatco. A Yatco collection device preparation process for preparing a Yatco collection device,
A connecting portion connectable to the top of the Yatco;
A central portion that is disposed on the axis of the yatco in a state in which the connecting portion is coupled to the upper portion of the yatco, and that can rotate integrally with the coupling unit around the axis;
A motor having an output shaft connectable to the central portion and a motor housing that rotatably supports the output shaft;
A reaction force receiving portion configured to receive a reaction force acting on the motor housing when the output shaft transmits torque to the central portion;
With
The reaction force receiving portion extends along a radial direction of the yatco in a state where the connecting portion is coupled to an upper portion of the yatco when viewed in a direction along the axis, and the output shaft of the motor is the center Preparation of Yatco Collection Device Prepared for Yatco Collection Device configured to contact separably in the circumferential direction of Yatco when transmitting torque to the part Process,
A Yatco recovery device connection step for engaging the connection part of the Yatco recovery device with the upper portion of the Yatco connected to the laid pile,
A torque engagement releasing step of transmitting torque around the axis to the central portion by the output shaft of the motor, and releasing the engagement between the yarn and the pile;
A method for recovering a cat, comprising a step of lifting the cat and separating the cat from the pile. The reaction force receiving portion has a detent member fixed to the motor housing or the bearing device,
The method of claim 7, wherein, in the step of releasing the engagement of the yoke, a construction machine that is a separate body from the yoke collection device is brought into contact with the detent member. A Yatco collection device preparation process for preparing a Yatco collection device,
A connecting portion connectable to the top of the Yatco;
A central portion that is disposed on the axis of the yatco in a state in which the connecting portion is coupled to the upper portion of the yatco, and that can rotate integrally with the coupling unit around the axis;
A torque transmitting part connected to the central part and configured to transmit torque around the axis to the central part;
The torque transmission unit is a Yatco recovery device that provides a Yatco recovery device, which is composed of a rod extending from the central portion along the radial direction of the Yatco in a state where the connecting portion is connected to the upper portion of the Yatco. A preparation process;
A Yatco recovery device connection step for engaging the connection part of the Yatco recovery device with the upper portion of the Yatco connected to the laid pile,
A hook engagement releasing step of transmitting torque around the axis to the central portion by pushing the radially outer portion of the rod, and releasing the engagement between the yoke and the pile;
A method for recovering a cat, comprising a step of lifting the cat and separating the cat from the pile.

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