JPH04173690A - Hanging tool - Google Patents

Abstract

PURPOSE:To grasp a drum can even though the axis of the drum can is inclined a little to the horizontal plane by connecting a vertical shaft to which the basic ends of links are connected, to a beam movable up and down, and rotatable around the axis and movable to incline when the vertical shaft is raised a specific amount. CONSTITUTION:A vertical shaft 15 installed to a frame body 10 is connected to the frame body 10 movable up and down, and rotatable around the axis and movable to incline when the vertical shaft 15 is raised a specific amount to the frame body 10, and a connecting metal 19 is installed rotatable to a holding member 18 installed loosely to the upper end of the vertical shaft 15. The basic ends of a pair of links 20 are connected rotatable to the connecting metal 19, and the basic ends of links 22 are connected to the tips of the links 20. To the legs 22a and 22b formed at the tips of the links 22, the center and the rear end of a sheath-form fork holder 24 of the circular arc form with the curvature radius same as a drum can K are connected, and a fork 25 is provided movable along the trunk of the drum can K to each fork holder 24.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a lifting device for hoisting a cylindrical or cylindrical load such as a drum filled with low-level radioactive waste or the like.

``Prior art'' As is well known, low-level radioactive waste generated from nuclear power plants, etc. is sealed in drums, transported to a burial facility by a special ship, etc., and stored in a concrete container installed within the facility. It will be brought in using a crane. A lifting device for hoisting drums is attached to the tip of this crane.

Conventionally, as an example of this hanging tool, one shown in FIG. 6 has been provided.

That is, in the figure, the symbol ] indicates a beam.

This beam 1 is attached to a crane or the like so that it can be raised and lowered freely, and a vertical shaft 2 is fixed to this beam 1. The proximal ends of a pair of links 3, 3 are rotatably connected to the distal end of this vertical shaft. These links 3.
3 is a long electric l! Il/link and piston rod 3a of these cylinders.

A fork 4.4 is rotatably attached to the tip of 3a. These forks 4.4 are arcuate, and the radius of curvature is set to the distance between the drum cans to be lifted.

Further, the base end of a link 5 is rotatably connected to the lower end of the vertical shaft 2, and the tip of the link 5 has a
A guide sheath 6 is rotatably connected to guide the movement of the fork 4.4 along the body of the drum. The radius of curvature of the guide sheath 6 is set to be between the forks 4.4 and the path so that the forks 4, 4 can be inserted and removed.

In order to lift the drum K using the above-configured lifting tool, the beam 1 is lowered to bring the guide sheath 6 into contact with the body of the drum, and then the piston ports 3a are extended. Then, the fork 4.4 moves along the body of the drum, and after the respective tips of the forks 4, 4 move to a predetermined position on the lower half of the body of the drum,
By raising the beam 1, the drum can K is lifted up.

``Problem to be Solved by the Invention'' However, in the lifting device having the above-mentioned configuration, the drum K to be lifted is slightly inclined with respect to a predetermined position in a horizontal plane, that is, the drum can K is slightly inclined with respect to a predetermined position in a horizontal plane. 3. If the axis of the drum and the plane equidistant from 3 are not parallel but intersect at a slight angle, or if the axis of the drum is slightly inclined to the horizontal plane, lower beam 1. Tip of hanging tool, i.e. fork 4.4
When the fork 4.4 comes into contact with the body of the drum,
is located so as to be bent relative to the drum K, and the vertical shaft 2 to which the fork 4.4 is connected via links 3, 3 is fixed to the beam l, so that the fork 4.
．． There have been problems such as damage to the fork 4.4 and the drum can K caused by excessive force acting on the fork 4.4, and cases in which the drum can K cannot be gripped reliably.

This invention aims to solve the above problems.

"Means for Solving the Problems" In order to achieve the above object, the hanging device of the present invention has a vertical shaft attached to a beam that can be raised and lowered, and base ends of a pair of links are attached to the vertical shaft. These pairs of links are rotatably connected, and arc-shaped forks with approximately the same radius of curvature as the cylindrical or cylindrical load (drum) to be lifted can be moved along the body of the load at the tips of the pair of links. The vertical shaft is connected to the beam so as to be able to move up and down, and to be rotatable and tiltable about the axis when the vertical shaft is raised by a predetermined amount with respect to the beam.

"Function" In the lifting tool of the present invention, when the tip of the lifting tool comes into contact with the body of the load (drum) to be lifted and the vertical shaft rises, the vertical shaft can rotate around the axis. This makes it possible to tilt the drum, so if the axis of the drum to be lifted is not parallel to a plane that includes the axis of the vertical axis and is equidistant from the pair of forks but intersects at a slight angle, or if the axis of the drum is on a horizontal plane. If the tip of the lifting tool contacts the body of the drum, the vertical axis will rotate along the drum, and this will cause the fork to move in a plane perpendicular to the axis of the drum. As the vertical axis is tilted along the drum, no undue force is applied to these forks when gripping the drum.
Therefore, the drum can be reliably gripped without causing damage to the drum can.

In addition, when the drum held by the fork is lifted by raising the beam, the vertical shaft to which the fork is connected is fixed to the beam. The posture of the drum can be maintained without being affected by unbalance.

Furthermore, when the lifted drums are placed on the floor, the vertical axis rises relative to the beam, making it possible to rotate and tilt around the axis. For example, when stacking drums,
Even if the drums stacked on the floor are slightly tilted as shown above, the drums to be stacked along the tilted drums rotate and tilt along with the vertical axis, so the drums can be stacked reliably without deforming the drums. I'll come.

"Embodiment" An embodiment of the hanging tool of the present invention will be described below with reference to FIGS. 1 to 5.

In these figures, the reference numeral 10 indicates a frame (beam).

This frame body 10 is provided so as to be able to run, traverse, and move up and down from a wire lobe let out from a club trolley (not shown) or the like. Furthermore, guide rollers 1 are provided on both the left and right sides of the frame 10 in FIG.
1.11 is rotatably attached.

Eight vertical shafts 15 are attached to the frame 10 at equal intervals in the horizontal direction. This vertical axis 15
is movable up and down on the frame 10, and the vertical shaft 15 is attached to the frame 10.
Before explaining this coupling mechanism, a mechanism for gripping the drums attached to each vertical shaft 15 will be explained.

That is, as shown in FIGS. 2 and 3, a support member 18 is loosely inserted into the upper end of the vertical shaft 15, and supported by a boss 18a fixed directly below the support member 18 so as to be unable to descend and swing freely. has been done. This support member 18 has a connecting fitting 1
It is attached so that it can rotate freely.

The proximal ends of a pair of first links 20.2 are rotatably connected to this connecting fitting 19.
The proximal end portions of a pair of second links 22, 22 are rotatably connected to the distal end portion of the second link 22, 22.

Each first link 20 includes a rod 20a connected to the connecting fitting 19, a rod 20b connected to the second link 22, and an adjusting rod 20b connected to the rod 20a, 20b by screwing into threaded portions of these rods 20a, 20b. It consists of the upper 20c,
This adjustment nut 20c allows the length of the first link 20 to be adjusted.

Two legs 22a, 22b are formed at the tip of each of the second links 22, 22, and each leg 22a, 22b has an arc shape with approximately the same radius of curvature as that of the drum to be lifted. Sheath-like fork holder 24
．． The central and rear end portions of 24 are connected to each other. Each fork holder 24 is provided with a fork 25 movable along the body of the drum.

That is, the fork 25 includes an arc-shaped slide member 26 that is movably inserted into the fork holder 24 from its tip opening along the body of the drum, and a circular slide member provided at the tip of the slide member 26. Arc-shaped fork claw 27
As the slide member 26 moves, the fork pawl 27 moves along the body of the drum.

A pair of hydraulic cylinders (extensible parts) 30.30 are arranged between the fork 25.25 and the second link 22.22 so as to intersect with each other.

The cylinder body 30a of this cylinder 30 is connected to the second link 2
It is rotatably connected to the base end of cylinder shaft 3.
0b is rotatably connected to the tip of the slide member 26 of the fork 25. By expanding and contracting the cylinder shaft 30b, the fork 25 is moved along the body of the drum. In addition, 7 Renoda 30
Eight sets of hydraulic units U for operating are provided in the frame 10. (See FIG. 1) Generally speaking, the central portions of the pair of fork holders 24, 24 are rotatably supported by horizontal shafts 31 perpendicular to the vertical shaft 15, respectively. As shown in FIG. 4, a ring 32 having a flat surface on its outer periphery is fixed to this horizontal shaft 31, and the flat surface of this ring 32 has an engaging portion formed at the lower end of the vertical shaft 15. 33 are engaged in a vertically slidable manner.

Further, as shown in FIG. 5, a movable body 35 is provided on the vertical shaft 15 located below the boss 18a so as to be movable up and down with a slight gap between it and the boss 18a.

Connecting fittings 36.36 are rotatably attached to both ends of the moving body 35 in the horizontal direction. freely connected. This third link 3
The lower end of 7.37 is rotatably connected to the horizontal shaft 31 (see FIG. 5). Furthermore, a recess 38 is formed in the lower end surface of each third link 37, as shown in FIG. It is set according to 38. A proximity switch 40 for stopping lowering is provided in this recess 38 so as to face the body of the drum.

Further, as shown in FIG. 4, a fixed plate 45 is fixed to the vertical shaft 15 located below the movable body 35 with a predetermined distance between it and the movable body 35.

A pair of hydraulic cylinders 46, 46 are attached to the fixed plate 45 in a vertical direction, and the piston rods 46a, 46a of the hydraulic cylinders 46, 46 extend and contract to come into contact with the moving body 35. By separating them, the movement of the movable body 35 toward the lower end of the vertical shaft 15 is restricted or made possible.

ing.

In addition to the above-mentioned proximity switch 40 for stopping lowering, the hanging device having the above-mentioned structure includes the following proximity switch.

A channel is provided.

That is, as shown in FIG. 3, L-shaped metal fittings 55 and 55 are attached to both ends of the horizontal shaft 31 to prevent the drum from moving in the axial direction.
5 is attached with a proximity switch 56 for decelerating the lowering. Further, as shown in FIG. 4, the boss 18a provided on the vertical shaft 15 is provided with a proximity switch 57 for detecting landing of the drum can.

Next, a mechanism for connecting the vertical shaft 15 to the frame 10 will be explained.

That is, as shown in FIGS. 2 and 3, the frame 10
Eight rectangular parallelepiped fixed blocks 60 are fixed at positions corresponding to the vertical axes 15. An engagement hole 61 is formed in the upper surface of this fixed block 60 and penetrates to the lower surface.

The engagement hole 61 is formed by cutting out the upper surface of the fixed block 60 in the shape of a square pyramid, and the inner surfaces facing each other are formed so as to gradually approach each other as they move downward.

On the other hand, each engagement hole 61 has an engagement block 62.
or engaged. The engagement block 62 has a truncated quadrangular pyramid shape, and is formed so that each side surface is in close contact with the inner surface of the engagement hole 61.

Further, the engagement block 62 is formed with a through hole passing through it in the vertical direction, and the upper end of the vertical shaft 15 is inserted into this through hole and fixed with a nut 64, so that the engagement block 62 has a vertical shaft. 15 is attached.

The vertical shaft 15 is engaged with the frame body 10 in a state in which the engagement block 62 is in close contact with the engagement hole 61, so as to be immovable below the frame body 10, non-rotatable around the axis, and non-tiltable;
Further, when the engagement block 62 is moved by a predetermined amount, that is, when the abutment plate 39 abuts against the body of the drum and the vertical shaft 15 is raised by a predetermined amount, and its side surface is separated from the inner surface of the engagement hole 61 by a predetermined amount, Then, the engagement is released, allowing rotation around the axis as well as tilting.

Next, a method for hoisting a drum using the above-configured hoist will be explained.

First, the frame 10 is rolled up and lowered from the top dead center at high speed.

When the frame body 10 descends and the metal fitting 55 descends to a position very close to the drum can K, a proximity switch 56 for lowering deceleration provided on the metal fitting 55 senses this and lowers the lowering speed.

Furthermore, when the frame 10 descends at this low speed, either a part of the contact plate 39 provided on the lower end surface of the third link 37, the fork pawl 27 at the tip of the fork 25 in the contracted state, or the metal fitting 55. The vertical shaft 15 is raised by a predetermined amount via the third link 37 and the like, whereby the side surface of the engagement bronco 2 is brought into contact with the engagement hole 6.
1, the engagement between the engagement block 62 and the engagement hole 61 is released. As a result, the entire hanging tool is aligned with respect to the drum K which is rotating and tilted, and is combined with the drum K, and the contact plate 39 reliably contacts the body of the drum.

Then, the proximity switch 40 for stopping the lowering senses this, and the lowering of the frame 100 is stopped.

In this way, the vertical axis 15 can be rotated and tilted about the axis, so that the axis of the drum to be lifted includes the axis of the vertical axis 15, and the pair of forks 25.2
If the plane is not parallel to the plane that is equidistant from 5 but intersects at a slight angle, or if the axis of the drum is slightly inclined to the horizontal plane, the contact plate 39 etc. The abutment causes the vertical shaft 15 to rotate along the drum, so that the fork 25.25 is located in a plane perpendicular to the drum axis and tilted along the drum K.

Note that during the above operation, the fork 25.25 is moved/the cylinder 30.30 is in a retracted state, and the piston rods 46a, 46a of the hydraulic cylinder 46.46 are in contact with the moving body 35.

Next, the cylinder shafts 30b of the cylinders 30, 30 are extended. Then, the slide members 26.26 in the fork holder 24°24 rotate in opposite directions about the axis of the drum, and the fork claws 27.27 provided at the tips of these slide members 26.26 move against the drum. rotates along the body of the As a result, the body of the drum is wrapped around the fork claws 27, 27. At this time, there is a slight gap between the fork claws 27, 27 and the body of the drum.

Next, the piston port of the hydraulic cylinder 46.46.

After moving the doors 46a and 46a downward to enable movement of the movable body 35 toward the lower end of the vertical shaft 15, the frame body 1
0 at low speed.

Then, the engagement block 62 engages with the engagement hole 61, and as a result, the vertical shaft 15 rotates around the axis to its original position and restores its inclination, and accordingly, the drum also rotates in the horizontal plane and its inclination is restored. Restore.

Furthermore, by rolling up the frame 10, the vertical shaft 15
to rise. Then, since the movable body 35 is movable toward the lower end of the vertical shaft 15, even if the vertical shaft 15 rises to a certain extent, the movable body 35 remains at a fixed distance from the drum, and this movement The horizontal shaft 31 connected to the body 35 via the third link 37 is also stopped. Therefore, the fork halter 2 supported by this horizontal shaft 31
4 is also stopped.

On the other hand, as the vertical shaft 15 rises, the respective base ends of the first links 20.20 connected thereto rise, and accordingly, the respective distal ends rotate and approach each other. The proximal ends of the connected second links 22.22 rotate toward each other. Accordingly, the leg 22b at the tip of the second link 22.22.

22b rotates upward about the horizontal shaft 31, thereby causing the fork holders 24.24 to rotate about the horizontal shaft 31 in a direction in which their tips approach each other, and the fork claws 27.27 move horizontally. They are rotated about the shaft 31 as a fulcrum so as to approach each other, and are pressed into contact with the body of the drum and are sandwiched so as to wrap around it.

Further, when the vertical shaft 15 is raised and the drum K is lifted off the floor, the drum's own weight is transferred to the fork 25.25 via the link and fork holder 24.24, like tongs used for transporting water, etc. They act in a direction to bring them closer to each other, and the drum can K is further clamped and gripped by the fork claws 27, 27 at the tips thereof.

After the frame 10 is rolled up at a low speed to a predetermined position, it is rolled up at a high speed to the top dead center.

Note that the hoisting speed is switched by a hoisting enhancer.

Moreover, when the drum can K gripped by the fork 25.25 is lifted by raising the frame 10, the vertical shaft 15 to which the fork 25.25 is connected is fixed to the frame 10, so that cargo handling is possible. Inside, the attitude of the drum is maintained without being affected by unbalance due to unbalanced weight on the drum and inertial force during cargo handling operations.

Furthermore, in order to lower the lifted drum K, the frame 1
0 is lowered in the order of high speed and low speed, and the drum can K is placed on the floor. When the drum K lands on the floor, the movable body 35 approaches the boss 18a by lowering the vertical shaft 15 via the third link 37 provided with the contact plate 39, and the proximity switch 57 detects this and lowers the drum. Stop.

At this time, since the engagement pro 62 is removed from the engagement hole 61, the vertical shaft 15 becomes rotatable around the axis. Therefore, for example, when stacking drums K, if the drums iK stacked on the floor etc. are slightly tilted in a horizontal plane, or if the axis of the drum is slightly tilted with respect to the horizontal plane, the tilted drums Since the drums K to be stacked along the vertical axis 15 rotate and tilt, the drums K can be stacked reliably. Note that if the drums K stacked on the floor or the like are not inclined, the drums K can of course be stacked accurately at predetermined positions.

Then, the piston rods 46a, 46a are connected to the moving body 3.
5, the cylinder shafts 3 of the cylinders 30, 30
0b, 30b are retracted and the fork pawls 27, 27 are rotated along the body of the drum in a direction away from each other, the grip on the drum is released, and the frame 10 is raised at high speed.

According to the above hanging device, the engagement block 62 attached to the vertical shaft 15 has a truncated quadrangular pyramid shape, and the engagement block 62 is shaped like a truncated square pyramid.
A fixed pro, provided on the frame body 10.

The vertical shaft 15 and the frame 10 are connected by engaging with the engagement hole 61 of the shaft 60, thereby connecting the vertical shaft 15 to the frame 10.
Since the vertical shaft 15 can be raised and lowered freely, and when the vertical shaft 15 rises by a predetermined amount with respect to the frame 10, it can rotate around the shaft and tilt. Contiguously, when the vertical shaft 15 is raised, the vertical shaft 15 becomes rotatable about the axis as well as tiltable.

Therefore, the axis of the drum to be lifted is vertical axis 1.
If the axis of the drum is not parallel to a plane that includes the axis of 5 and is equidistant from the pair of forks 25 and intersects at a slight angle, or if the axis of the drum is inclined to the horizontal plane, Due to the abutment of the contact plate 39 and the like against the drum can body, the vertical shaft 15 rotates along the drum and is tilted, thereby positioning the fork 25.25 in a plane orthogonal to the axis of the drum and causing the iQ to the drum K. −
), so no unreasonable force is applied to these forks 25 and 25 when gripping the drum K.
Therefore, the drum can K can be reliably gripped without causing damage to the drum can K.

Furthermore, when the lifted drums K land on the floor, the engagement block 62 comes off from the retaining hole 61, and the vertical shaft 15 becomes rotatable and tiltable around the axis, so that, for example, when stacking drums, Even if the drums stacked on the floor etc. are slightly tilted in the horizontal plane, the drums to be stacked along the tilted drums are aligned with the vertical axis 15.
Since the drums rotate together, drums can be stacked reliably. Note that if the drums K stacked on the floor or the like are not inclined, the drums K can of course be stacked accurately at predetermined positions.

Furthermore, the fork claws 27.27 of the fork 25.25 having an arc shape wrap around the body of the drum to grip it, making it safer than, for example, gripping the top and bottom plates. The drum can K can be grasped and lifted.

In addition, a first link 20.20 is connected to the vertical shaft 15 provided to be able to rise and fall freely, a second link 22.22 is connected to this first link 20.20, and this second link 22.22
A fork holder 24.24 is connected to the fork holder 24.24, and a fork 25.25 having an arc shape having approximately the same radius of curvature as the drum can is mounted on the fork holder 24.24 so as to be movable along the body of the drum. .25 and the second link 22°22 are connected by a cylinder 30.30,
Due to the expansion of the cylinders 30, 30, the fork 25°2
5 is moved along the body of the drum to wrap around the body and the vertical shaft 15 is raised. Since the drum can's own weight is applied to the forks 25 and 25 in a direction that brings them closer together to obtain a gripping force, there is no need for a drive source to grip the drum can, and the drum can can be lifted by simply raising the vertical shaft 15. K can be gripped securely.

Further, a movable body 35 is provided on the vertical shaft 15 so as to be movable up and down, and is engaged with the movable body 35 to restrict the movement of the movable body 35 toward the lower end of the vertical shaft 15, and also moves off the movable body 35. A hydraulic cylinder 46° 46 is provided to enable movement of the body 35 toward the lower end of the vertical axis 15.
A third link 37 is connected to the third link 37, a horizontal shaft 31 connecting the fork holder 24, 24 is connected to the third link 37,
After wrapping the body of the drum with the fork 25.25, the piston rod 46a of the hydraulic cylinder 46.46
, 46a are removed from the movable body 35 to prevent the movable body 35 from rising as the vertical shaft 15 rises. Since the fork 25, 25 does not fail to grasp the drum K by rising, and rises after the fork 25, 25 comes into pressure contact with the drum K, even a drum with a slightly larger diameter can be reliably gripped and lifted.

Note that in the above embodiment, the fixed protrusion 6 provided on the frame 10 serves as a mechanism for connecting the frame 10 and the vertical shaft 15.
0, an engagement hole 61 is formed by cutting out the fixed block in the shape of a truncated square pyramid, and a square pyramid-shaped engagement block 62 attached to the vertical shaft 15 is engaged with this engagement hole 61. However, the present invention is not limited to this, and for example, the engagement block may be formed into a conical shape, and a protrusion extending in the generatrix direction may be formed on the side surface of the engagement block, or a conical shape with an elliptical cross section, or a conical shape with an elliptical cross section. It is sufficient to form the engaging hole into a polygonal cone shape, or even a cone shape with a star-shaped cross section, and form the engaging hole in a shape corresponding to this shape.In short, when the engaging block is engaged with the engaging hole, , the engagement block cannot be rotated or tilted, and when the engagement block is lifted due to the rise of the vertical shaft and the engagement is released, the engagement block can be rotated by a predetermined amount around the axis and tilted. .

"Effects of the Invention" As explained above, according to the hanging tool of the present invention, the vertical axis can be raised and lowered by the beam, and when the vertical axis is raised by a predetermined amount with respect to the frame beam, it can be rotated around the axis. Since it is made to be tiltable, when the tip of the lifting tool touches the body of the drum (load) to be lifted and the vertical axis rises,
The vertical axis is rotatable and tiltable about the axis.

Therefore, if the axis of the drum to be lifted is not parallel to a plane that includes the axis of the vertical shaft and is equidistant from a pair of forks but intersects at a slight angle, or if the axis of the drum is slightly If it is slanted,
When the tip of the hanging tool comes into contact with the body of the drum, the vertical axis rotates along the drum, thereby positioning the fork in a plane perpendicular to the axis of the drum and tilting along the drum. When gripping the drum, no excessive force is applied to these forks, so
The drum can can be gripped reliably without causing damage to the drum can.

In addition, when the drum held by the fork is lifted by raising the beam, the vertical shaft to which the fork is connected is fixed to the beam. The posture of the drum can be maintained without being affected by unbalance.

Furthermore, even when the lifted drums land on the floor, the vertical axis can rotate around the axis and tilt, so for example, when stacking drums, the drums stacked on the floor etc. are slightly tilted in the horizontal plane. Also, since the drums to be stacked along the tilted drums are rotated along with the vertical axis and tilted, the drums can be stacked reliably.

It should be noted that if the drums K stacked on the floor etc. are not tilted (the drums can be stacked accurately at predetermined positions).

Furthermore, by moving a pair of forks along the body of the drum to wrap around the body and raising the vertical axis, the body of the drum can be clamped and gripped, and the tongs used for transporting water, etc. As shown in the figure, since the drum can's own weight is applied to the fork in the direction of moving them closer together to obtain a gripping force, the drum can be gripped more safely than the conventional method that grips the top and bottom plates. The drum can can be lifted by simply lifting the vertical shaft, and the drum can be reliably gripped and lifted by simply raising the vertical shaft.

[Brief explanation of drawings]

1 to 5 show an embodiment of the hanging tool of the present invention, FIG. 1 is a front view of the hanging tool for drums, FIG. 2 is a front view showing the main parts of the hanging tool, and FIG. Figure 3 is a side view of the same, Figure 4 is a front view of the main parts showing the moving body, Figure 5 is a front view of the main parts showing the third link, and Figure 6 shows an example of a conventional hanging device for drums. It is a front view. K...Drum can, 10...Frame (beam), 15...Vertical axis, 20...First link, 22... Second link, 24...
・Fork holder, 25...Fork, 30...
...Nlinda, 31...Horizontal axis, 35...
・Mobile object, 37...Third link, 46...
... Hydraulic cylinder, 60 ... Fixed block, 6
1...--Engagement hole, 62...Engagement pro, ri.

Claims (1)

[Claims] A vertical shaft is attached to a beam that can be raised and lowered, and the base ends of a pair of links are rotatably connected to this vertical shaft.
A fork having an arcuate shape having approximately the same radius of curvature as the cylindrical or cylindrical load to be lifted is provided at the tip of each of the pair of links so as to be movable along the body of the load. A hanging device characterized in that it is connected to a beam so that it can be raised and lowered, and when the vertical axis is raised by a predetermined amount with respect to the beam, it is rotatable around the axis and tiltable.