JP2016008097A - Slinging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slinging device which can reliably determine an insertion completion state of a locking pin for a through-hole of a suspension piece by visual observation from a remote part with a simple structure and, moreover, can improve the accuracy of a slinging work upon rainy weather.SOLUTION: A slinging device 1 includes: a clamp which is engaged with a suspension piece 21 and, thereby, is positioned such that a locking pin 5 can be inserted to a through-hole 21a of the suspension piece 21; a driving device 6 which projects the locking pin 5 toward the through-hole 21a in such a state that the locking pin 5 is positioned on insertion allowable position for the through-hole 21a; and a check mark 71 which is mechanically coupled to a driving mechanism of the driving device 6 and can be moved between a display position of the outer side and a non-display position of the inner side with respect to the slinging device 1. Therein, when insertion to the through-hole 21a of the locking pin 5 is completed, the check mark 71 is located on the display position.

Description

  The present invention relates to a slinging device for lifting a member to be lifted, which is provided at a wire tip of a lifting machine.

  Conventionally, when lifting a lifted member using a lifting machine such as a crane, a beading jig at the tip of a wire is hung on the lifted member. As means for reducing the labor required for such a slinging operation, for example, as shown in Patent Document 1, there is known a lifting device that can perform slinging on a lifted member unattended.

  Moreover, generally, there are many cases in which a suspended piece having a through hole is provided on the suspended member, and the suspended member is suspended by inserting a locking pin into the through hole. Further, a slinging device that can automatically position the locking pin with respect to the through hole and can be remotely operated by radio or the like is also employed.

JP 2007-308289 A

However, the conventional slinging device described above has the following problems.
That is, in a slinging device that performs a slinging operation in which a locking pin is inserted into a through hole of a suspension piece by wireless remote operation, a high positioning accuracy is required because the locking pin is automatically inserted into the through hole. In addition, it is essential to confirm the insertion completion state of the locking pin from the remote part. For this reason, an electric lamp and a transmitter / receiver, a camera, and other electric devices and control devices are required to notify the slinging operator who remotely controls the completion of insertion of the electric detection sensor and its locking pin, resulting in a complicated structure. Therefore, there was room for improvement in that respect.

  In addition, in the confirmation method using such electrical equipment, in rainy weather, rainwater infiltrates from the connector part of the control panel or electrical cable, resulting in malfunction or malfunction due to poor electrical contact. In addition, for example, there is a possibility that the suspended member is intended to be lifted with an unstable posture in a state where the locking pin is not completely inserted into the through hole.

  The present invention has been made in view of the above-described problems, and improves the confirmation accuracy when visually confirming the insertion completion state of the locking pin with respect to the through hole of the suspension piece from a remote part with a simple structure. An object of the present invention is to provide a sling device that can perform the above.

  In order to achieve the above object, the slinging device according to the present invention is a slinging device provided with a locking pin that is provided at a wire tip of a lifting machine and can be inserted into a through hole of a suspension piece of a lifted member, A positioning member that positions the locking pin so that the locking pin can be inserted into the through hole of the hanging piece by engaging with the hanging piece, and a state in which the locking pin is positioned at an insertable position with respect to the through hole And a driving device for projecting the locking pin toward the through hole, and a mechanical mechanism interlocked with a driving mechanism provided in the driving device, and an outer display position and an inner non-display position with respect to the slinging device. And a confirmation mark that can move between the two, and when the insertion of the locking pin into the through hole is completed, the confirmation mark is located at the display position.

In the slinging device of the present invention, when lifting the suspended member, the slinging device is brought close to the suspended member, engaged with the suspension piece by the positioning member, and the position of the locking pin is aligned with the through hole, The driving device can be driven to project the locking pin toward the through hole of the suspension piece, and the locking pin can be inserted into the through hole. When the insertion of the locking pin into the through hole is completed, the confirmation mark moves from the inner non-display position to the outer display position in conjunction with the driving mechanism provided in the driving device. This confirmation mark protrudes outward from the slinging device. Therefore, the slinging worker can visually confirm the confirmation mark located at the display position from the outside of the slinging device, and can improve the accuracy of confirming the slinging operation.
In this way, the slinging worker can recognize from the outside away from the slinging device that the insertion of the locking pin into the through hole has been reliably performed by the confirmation mark. Therefore, even when remote control of the slinging device is performed or when the engagement state of the locking pin with respect to the suspension piece is difficult to see from the outside, the slinging operation can be accurately confirmed. Therefore, it is particularly effective in slinging work where it is difficult for a slinging worker to enter and remote control is required.

In addition, when the locking pin is not securely inserted into the through-hole, the confirmation mark is not positioned at the display position, so that the suspended member is in an unstable gripping state with insufficient slack on the hanging piece. Can be prevented from being lifted in the posture.
In addition, the confirmation mark is configured to move between the display position and the non-display position mechanically in conjunction with the driving of the locking pin, and therefore, for example, an electrical member such as a position detection sensor should be used. Therefore, even during rainy weather work, for example, it is possible to eliminate incorrect display lamps and malfunctions due to poor contact with electrical devices and cables as in the past, and to perform reliable slinging work regardless of work conditions There is an advantage that can be.

  Further, in the staking apparatus according to the present invention, the drive mechanism includes a link portion that is interlocked with the protrusion of the locking pin, and the confirmation mark is connected to the display position and the non-display position via the link portion. It is preferable that it is moved between.

  In this case, since the link portion mechanically interlocks with the protrusion of the locking pin, at least a part of the confirmation mark can be protruded toward the outside of the slinging device by the operation of the link portion.

  Further, the slinging device according to the present invention is provided with a restriction plate that restricts the protrusion of the locking pin and has a positioning completion mark, and when the positioning member completes positioning with respect to the suspension piece, the through hole It is preferable that the restricting plate is movable so as to allow the locking pin to protrude to the outside, and at least a part of the positioning completion mark protrudes outward from the slinging device.

  In the present invention, in the state before positioning by the positioning member described above, the protrusion of the locking pin is regulated by the regulation plate, and at this time, the confirmation mark is in the non-display position. Then, when the lifting member is lifted, when positioning with respect to the suspension piece by the positioning member is completed, the restriction plate is moved to allow the locking pin to protrude into the through hole, and at least a part of the positioning completion mark is Projects toward the outside of the slinging device. Therefore, the slinging worker can visually confirm the positioning completion mark from the outside of the slinging device. Furthermore, after confirming the positioning completion mark, the locking pin is inserted into the through hole by driving the drive device. When the locking pin is completely inserted into the through hole, the confirmation mark is displayed from the non-display position as described above. It is possible to confirm the confirmation mark from outside by moving to the position.

  In the staking apparatus according to the present invention, it is preferable that the positioning member is a clamp that is fitted to the suspension piece.

  In this case, by engaging the clamp with the suspension piece, the locking pin can be easily positioned at a position where it can be inserted into the through hole of the suspension piece.

  According to the slinging device of the present invention, with a simple structure, it is possible to improve the accuracy of confirmation when visually confirming the insertion completion state of the locking pin with respect to the through hole of the suspension piece from the remote part.

It is a perspective view which shows the structure of the slinging apparatus by embodiment of this invention, Comprising: It is a figure which shows the state before positioning. FIG. 2 is a perspective view showing a state in which a locking pin is inserted into a through hole of a suspension piece in the slinging device shown in FIG. 1. It is the side view which looked at the sling apparatus shown in FIG. 1 from the width direction orthogonal to a pin axial direction. It is the side view which looked at the slinging device shown in FIG. 2 from the width direction orthogonal to a pin axial direction. It is the side view which looked at the slinging device shown in FIG. 1 from the pin axial direction. It is the side view which looked at the slinging device shown in FIG. 2 from the pin axial direction.

  Hereinafter, a slinging device according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the slinging device 1 according to the present embodiment is used, for example, when lifting a column beam member (lifted member 2) of a building by a lifting machine (not shown) such as a crane, It is used by being suspended from the wire tip of a lifting machine.

  A suspended piece 21 having a through hole 21a is fixed to the suspended member 2 at an appropriate hanging position. The suspension piece 21 is formed in a substantially semicircular shape, and protrudes upward from the upper portion of the lifted member 2, and in this embodiment, the central axis of the through hole 21a is directed horizontally. It is installed at. Here, a direction perpendicular to the horizontal plane is referred to as a vertical direction Y.

  In addition, the magnitude | size and shape of the to-be-lifted member 2 will not be specifically limited if it is the thing of the weight which can be lifted with a lifting machine. Therefore, a plurality of suspension pieces 21 may be attached to the suspended member 2, and a plurality of slinging devices 1 corresponding to the plurality of suspension pieces 21 may be used simultaneously. The individual hanging pieces 21 and one slinging device 1 will be described.

As shown in FIGS. 3 and 4, the slinging device 1 includes a device main body 3 having an upper suspension 31 and a clamp 4 (positioning member) for fitting the suspension piece 21 of the lifted member 2 below the device main body 3. ), A locking pin 5 that can be inserted into and extracted from the through hole 21a of the suspension piece 21 fitted to the clamp 4, and a drive device 6 that moves the locking pin 5 forward and backward along the pin axis O direction, A confirmation mark that can move between the outer display position S2 (FIG. 2) and the inner non-display position S1 (FIG. 1) in conjunction with the drive mechanism of the drive device 6. And a movable plate 7 having 71.
Here, in the horizontal plane, the locking pin 5 is orthogonal to the direction of the pin axis O and the direction orthogonal to the vertical direction Y is referred to as the width direction X, and the direction around the width direction X is referred to as the circumferential direction.

  As shown in FIGS. 5 and 6, the clamp 4 has a positioning function for fitting to the suspension piece 21 so as to be positioned at a position where the locking pin 5 can be inserted into the through hole 21 a of the suspension piece 21. Have. The clamp part 4 is formed in a substantially V-shaped or substantially U-shaped downward shape by a pair of clamp parts 4A and 4B, and is above the guide surface 4a on the inner peripheral side formed by the clamp parts 4A and 4B. The suspension piece 21 is fitted from above at the (back side).

The guide surface 4a gradually inclines toward the upper side from the lower end of each of the pair of clamp portions 4A and 4B toward the center in the width direction X (the connection portion between the clamp portions 4A and 4B). Is formed. The opening angle between the clamp portions 4A and 4B is set so that the outer peripheral edge of the suspension piece 21 can come into contact with a part of the guide surface 4a.
In addition, in the clamp 4 of this Embodiment, although the said opening angle is being fixed fixed, you may be comprised so that it can adjust and change to arbitrary angles.

Further, the clamp 4 is provided with a restriction plate 40 that rotates so as to be able to restrict the forward and backward movement of the locking pin 5.
The restriction plate 40 has a belt-like flat plate shape, and one end portion (base end portion 40a) is rotatably supported with respect to the lower end of one clamp portion (here, 4B). That is, the restriction plate 40 is disposed in a direction in which the rotation axis of the base end portion 40 a is parallel to the pin axis O, and rotates along a plane orthogonal to the pin axis O.
In a state where the restriction plate 40 is not fitted to the suspension piece 21, a restriction position on the track (pin axis O) where the distal end portion 40b opposite to the base end portion 40a is inserted and ejected is provided. It is located in P1, that is, the space inside the guide surface 4a. When the clamp 4 is fitted to the suspension piece 21, the restriction plate 40 is pushed upward by the suspension piece 21, and the distal end portion 40b is centered on the proximal end portion 40a with the restriction position P1 as a base point. It is configured to rotate toward the restriction release position P2 in the direction approaching the clamp portion 4B side. The restriction release position P2 on the restriction plate 40 is a position that substantially overlaps the clamp part 4B in the pin axis O direction, and is a position where the tip part 40b is inclined toward the connection part side between the clamp parts 4A and 4B.

  The restriction plate 40 may be set so as to return from the restriction release position P2 to the restriction position P1 due to its own weight, or may be located at the restriction position P1 when the suspension piece 21 is not fitted. For example, it may be urged toward the opposite side of the rotation direction by a spring member or the like (not shown).

  On the side surface facing the outside of the restriction plate 40, a protruding piece 41 is provided to protrude. The projecting piece 41 is made of a triangular plate having a top 41a as a projecting tip in a side view as viewed from a direction orthogonal to the pin axis O, and is visually conspicuous such as red on both surfaces along the width direction X. A colored positioning completion mark 41A is displayed.

The protruding piece 41 is located between a storage box 8A and a control box 8B (see FIG. 3), which will be described later, disposed on both sides of the apparatus main body 3 when the restriction plate 40 shown in FIG. 5 is at the restriction position P1. These boxes 8A and 8B and the back side of the clamp 4 are hidden, and the positioning completion mark 41A is not visible from the outside. On the other hand, when the restriction plate 40 shown in FIG. 6 is at the restriction release position P2, at least a part including the top 41a of the protruding piece 41 protrudes outward from the clamp 4, and the positioning completion mark 41A is visually observed from the outside of the slinging device 1. It can be confirmed.
Therefore, the shape of the protruding piece 41 is set so that at least a part of the positioning completion mark 41A is visible at the restriction release position P2 as described above.

  As shown in FIGS. 3 and 4, a side plate 32 along the width direction X is provided on one side of the apparatus main body 3 in the pin axis O direction, and a storage box 8 </ b> A is provided on the side plate 32. The accommodation box 8A is accommodated so as to move the locking pin 5 forward and backward in the direction of the pin axis O, and a drive device 6 for driving the locking pin 5 is accommodated. The locking pin 5 is disposed in a lower portion of the storage box 8A, and a pin hole 32a for inserting the locking pin 5 is provided coaxially with the pin shaft O in the side plate 32 of the apparatus main body 3.

  The drive device 6 includes a substantially L-shaped connecting piece 61 that connects one end 61 a to the support end 5 a of the locking pin 5, and an electric cylinder 62 connected to the other end 61 b of the connecting piece 61. ing. The electric cylinder 62 is disposed on the upper side of the connecting piece 61 with the cylinder tip 62a facing downward, and electricity is supplied from the outside by a power cable 64. In the connecting piece 61, a substantially L-shaped intermediate portion (support portion 61c) is a rotation shaft in a direction along the width direction X, and the support portion 61c is supported rotatably with respect to the storage box 8A. Telescopic driving of the electric cylinder 62 can be performed by remote operation.

  As shown in FIG. 3, when the electric cylinder 62 is contracted, the locking pin 5 is in a position in which one end 61a of the connecting piece 61 (the support end 5a of the locking pin 5) is retracted from the side plate 32. The non-insertion position T1 is not inserted through the through hole 21a of the piece 21. As shown in FIG. 4, when the electric cylinder 62 is extended, the connecting piece 61 rotates around the support portion 61c, and one end 61a of the lock pin 5 (the support end 5a of the lock pin 5). ) Is a position advanced to the vicinity of the side plate 32, and becomes an insertion position T <b> 2 that is completely inserted into the through hole 21 a of the suspension piece 21. The insertion position T2 of the locking pin 5 is a position where the tip 5b of the locking pin 5 is inserted from the through hole 21a and protrudes from the opposite side surface of the suspension piece 21.

Further, as shown in FIGS. 3 and 4, the connecting piece 61 is provided with a movable plate 7 that rotates via a link member 63 (link portion). The movable plate 7 is a support end 7a that is provided inside the outer wall 82 on the opposite side of the apparatus main body 3 in the pin axis O direction of the storage box 8A, and that one end forms a rotation axis in the direction along the width direction X. The support end 7a is rotatably supported with respect to the storage box 8A.
A protrusion 72 that protrudes inward in the direction of the pin axis O is provided at the tip 7b of the other end of the movable plate 7 (the side opposite to the support end 7a). A confirmation mark 71 colored in a visually noticeable manner, such as red, is displayed on both surfaces along the pin axis O direction at the tip portion including the protrusion 72.

  The link member 63 has an intermediate rotation part 63c, the link one end 63a is rotatably supported by a portion between the support part 61c and the one end 61a of the connecting piece 61, and the pushing end 63b at the other end of the link is provided. It is configured to move up and down as the link member 63 is driven. When the push-out end 63b moves from the lower side to the upper side, the protrusion 72 of the movable plate 7 abuts from below and pushes up. As a result, the movable plate 7 rotates around the support end 7 a, and at least a part of the confirmation mark 71 protrudes outward from the outer wall 82.

As shown in FIG. 3, the movable plate 7 is configured so that the pushing end 63 b of the link member 63 does not come into contact with the protruding portion 72 of the movable plate 7 when the locking pin 5 is at the non-insertion position T <b> 1. The confirmation mark 71 is invisible from the outside.
On the other hand, as shown in FIG. 4, when the locking pin 5 is at the insertion position T <b> 2, the pushing end 63 b moves upward with the rotation of the connecting piece 61 to push up the protruding portion 72 of the movable plate 7. Rotate. Therefore, a part of the tip 7b of the movable plate 7 protrudes outward from the outer wall 82 of the storage box 8A so that the confirmation mark 71 can be visually recognized from the outside of the slinging device 1.
Therefore, the shape of the movable plate 7 and the rotation angle due to the rotation are set so that at least a part of the confirmation mark 71 can be visually recognized at the insertion position T2 as described above.

Further, a detection sensor 81 for detecting the position of the cylinder tip 62a of the electric cylinder 62 is provided in the storage box 8A.
A control box 8B is provided on the opposite side of the housing box 8A with the apparatus main body 3 interposed therebetween. The control box 8B is controlled such that the position of the cylinder tip 62a is detected by the detection sensor 81 and an output signal is transmitted to an indicator lamp (not shown).

Next, the operation of the above-described slinging device 1 and a confirmation method when the locking pin 5 is inserted into the suspension piece 21 using this slinging device 1 will be described based on the drawings.
As shown in FIGS. 1 and 5, when lifting the lifted member 2, the slinging device 1 attached to the wire tip of a lifting machine (not shown) is lowered to approach the lifted member 2 from above, and the clamp 4 The suspension piece 21 is guided to the back side of the pair of clamp portions 4A and 4B opened downward. Thus, the clamp 4 can be held by the suspension piece 21 and is positioned so that the position of the locking pin 5 can be inserted into the through hole 21a as shown in FIG. By this positioning, the central axis of the through hole 21a coincides with the pin axis O.

  In the state before positioning by the clamp 4 shown in FIG. 5, the restriction plate 40 is located at the restriction position P1 where the pin shaft O of the locking pin 5 is blocked, and the protrusion of the locking pin 5 is restricted. As shown in FIG. 3, at this time, the movable plate 7 remains in the non-insertion position T1, and the confirmation mark 71 is also located in the storage box 8A (non-display position S1). Is not visible from the outside of the slinging device 1. Therefore, since the confirmation mark 71 is not confirmed, the slinging worker is determined that the slinging work has not been completed.

Then, as shown in FIG. 6, when the positioning with respect to the suspension piece 21 by the clamp 4 is completed, the regulation plate 40 is pushed up and rotated by the suspension piece 21, and the protrusion of the locking pin 5 into the through hole 21a is allowed. A part of the positioning completion mark 41A provided on the restriction plate 40 protrudes toward the outside of the slinging apparatus 1 (see FIG. 2).
Therefore, the slinging worker can visually confirm the positioning completion mark 41 </ b> A from the outside of the slinging device 1, and can improve the accuracy of confirming the slinging operation.

Further, as shown in FIG. 4, after confirming the positioning completion mark 41A, the slinging operator extends the electric cylinder 62 of the drive device 6 by remote control, thereby inserting the locking pin 5 into the through hole 21a. Position T2.
Then, when the locking pin 5 is completely inserted into the through hole 21a, the movable plate 7 is rotated outwardly from the housing box 8A mechanically interlocking with the link member 63 of the driving device 6. In accordance with this, the confirmation mark 71 moves from the inner non-display position S1 to the outer display position S2 with respect to the sling apparatus 1, and a part of the confirmation mark 71 protrudes outward from the sling apparatus 1 ( (See FIG. 2). Therefore, the slinging worker can visually confirm the confirmation mark 71 located at the display position S2 from the outside of the slinging apparatus 1.

  Thus, the slinging worker can recognize from the outside away from the slinging device 1 by the confirmation mark 71 that the locking pin 5 has been reliably inserted into the through hole 21a. Therefore, even when remote control of the slinging device 1 is performed or when the engagement state of the locking pin 5 with respect to the suspension piece 21 is difficult to see from the outside, the slinging operation can be accurately confirmed. Therefore, it is particularly effective in a slinging work where a slinging worker is difficult to enter and a remote operation is required.

Moreover, in the state where the locking pin 5 is not securely inserted into the through hole 21a, the confirmation mark 71 is not positioned at the display position. It is possible to prevent lifting in an unstable gripping posture.
Further, since the confirmation mark 71 is configured to move between the display position S2 and the non-display position S1 mechanically in conjunction with the driving of the locking pin 5 protruding, for example, a position detection sensor or the like. For example, even during rainy weather work, the display lamps are not erroneously displayed or broken due to poor contact with electrical equipment or cables as in the past. There is an advantage that a reliable slinging operation can be performed.

  As described above, the slinging device according to the present embodiment has a simple structure and visually confirms the confirmation mark 71 indicating the insertion completion state of the locking pin 5 with respect to the through hole 21a of the suspension piece 21 from the outside (remote portion). It is possible to improve the accuracy of confirmation when doing so.

The embodiment of the slinging device according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the present invention.
For example, in the present embodiment, the clamp 4 having a shape that is opened downward by the pair of clamp portions 4A and 4B is used as the positioning member, but the present invention is not limited to this. The point is that the pin shaft O of the locking pin 5 only needs to be positioned so as to be coaxial with the through hole 21a of the suspension piece 21. Any configuration that can engage and position the suspension piece 21 by contact or the like is acceptable.

  In the present embodiment, the protrusion of the locking pin 5 is restricted and the restriction plate 40 having the positioning completion mark is provided. However, either the restriction plate 40 or the positioning completion mark 41A, or Both can be omitted. For example, the positioning completion mark 41A does not confirm the display by the rotation of the restriction plate 40. For example, when it is detected that the suspension piece 21 is in contact with a part of the clamp 4, the positioning completion mark 41A is externally displayed. It is also possible to adopt a configuration in which the information is displayed so as to be confirmed visually.

  In the present embodiment, the confirmation mark 71 is provided on the movable plate 7 and is linked to the driving device 6 (the connecting piece 61 and the electric cylinder 62) via the link member 63. However, the link member 63 may be omitted and the structure directly connected to the driving device 6 and the locking pin 5 may be employed.

Further, the position, orientation, shape, color, quantity, and the like of the confirmation mark 71 and the positioning completion mark 41A are the shape and size of the lifted member 2 and usage conditions (for example, the distance by remote operation between the slinging device and the slinging worker) It can be arbitrarily set according to conditions such as (or height).
For example, in the present embodiment, one confirmation mark 71 is provided in one slinging device 1, but the slinging operator to be remotely controlled by providing it at a plurality of places such as two places or four places around it. It is possible to visually confirm the confirmation mark 71 even from the direction, and it is possible to increase the accuracy of confirmation.

Further, when the staking position (position when the staking apparatus 1 is struck) is higher than the staking worker, the direction of the confirmation mark 71 may be projected so as to be easily seen from below.
Further, in the present embodiment, a part of the confirmation mark 71 and the positioning completion mark 41A protrudes from the slinging device 1, but the protruding amount of these marks is arbitrary, and the entire mark protrudes. May be.

  Moreover, in this Embodiment, although the electric cylinder 62 is employ | adopted as the drive device 6 which drives the latching pin 5, it is not limited to this. For example, the structure which drives the latching pin 5 so that back movement is possible using an electric motor may be sufficient.

  In the present embodiment, it is described that the slinging worker directly confirms the confirmation mark 71 and the positioning completion mark 41A by visual observation. However, whether or not the mark is at the display position via a camera or a monitor. It may be possible to check the color visually.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Climbing apparatus 2 Lifting member 3 Apparatus main body 4 Clamp (positioning member)
4A, 4B Clamp part 5 Locking pin 6 Driving device 7 Movable plate 8A Housing box 21 Hanging piece 21a Through hole 40 Restriction plate 41A Positioning completion mark 61 Connecting piece 62 Electric cylinder 63 Link member (link part)
71 Confirmation mark O Pin shaft P1 Restriction position P2 Restriction release position T1 Non-insertion position T2 Insertion position S1 Non-display position S2 Display position X Width direction Y Vertical direction

Claims (4)

A slinging device provided with a locking pin that is provided at a wire tip of a lifting machine and can be inserted into a through hole of a suspension piece of a lifting member,
A positioning member that positions the locking pin so that it can be inserted into the through hole of the hanging piece by engaging with the hanging piece;
A driving device for projecting the locking pin toward the through hole in a state where the locking pin is positioned at an insertable position with respect to the through hole;
A check mark that is mechanically interlocked with a driving mechanism provided in the driving device and can move between an outer display position and an inner non-display position with respect to the slinging device;
With
When the insertion of the locking pin into the through hole is completed, the confirmation mark is located at the display position. The drive mechanism is provided with a link portion that interlocks with the protrusion of the locking pin,
The sling apparatus according to claim 1, wherein the confirmation mark is moved between the display position and the non-display position via the link portion. The positioning member is provided with a regulating plate that regulates the protrusion of the locking pin and has a positioning completion mark,
When positioning with respect to the suspension piece by the positioning member is completed, the restriction plate is movable so as to allow the locking pin to protrude into the through hole, and at least a part of the positioning completion mark is the slinging device. The slinging device according to claim 1, wherein the slinging device is protruded outward.   4. The sling apparatus according to claim 1, wherein the positioning member is a clamp that is fitted to the suspension piece. 5.

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