JPH04371491A - Reversing method for heavy article of the like - Google Patents

Abstract

PURPOSE:To mechanically reverse heavy or deformed articles without hands and make the reversal operation smoothly and safely by providing a process reversing articles to be reversed by the rotation of an electric rotation hook of a lifting part via a sling, and a process reversely rotating a sling on a loosened side. CONSTITUTION:First, work 5 is lifted from placed mounts 6 with hoists 11 and 12. Next, the work 5 is made the vertical by winding up one side wire rope 13 and winding down the other side wire rope 14. Then the work 5 us 180 deg.-rotated with an electric rotation hook 30, linked to the wire rope 13, to be stopped. After that, the twist of a sling 81 is released by 180 deg.-rotating an electric rotation hook 31, linked to the wire rope 14, in a reverse direction to the electric rotation hook 30. Finally, the wire rope 14 is wound and inversely the wire rope 13 is rewound with a winding device, etc., 11 to 90 deg.-rotate the work 5 to make it horizontal. At this time, the work 5 is fully reversed at its first position on the placed mounts 6.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reversing heavy objects.

0002

2. Description of the Related Art Many article reversing devices have been proposed in the past. That is, as a device for reversing a long member, the long member is housed or installed in a U-shaped or L-shaped frame, and the frame is suspended at two places by two left and right hoists. There is a type in which the frame is rotated by the vertical movement of a wire rope or chain at the suspension part of the hoist. (1976-
84077, Utility Model Publication No. 62-77186).

[0003] Also, as a reversing device for heavy objects, a pair of electric trolleys are provided so as to be able to approach and separate, each electric trolley is provided with two electric blocks, and a chain suspended from each electric block is passed through a sheave. and hang it on the heavy object's hanger.
A device has been proposed in which a heavy object is reversed by the sliding resistance caused by the rotation of a chain. (Jitsukai 58-7
74).

[0004] Furthermore, Japanese Utility Model Application No. 62-56584 proposes a hoisting wire rope having a movable pulley with a hook that is wound up on a winding drum, as well as a wire rope for reversing.

[0005]

[Problems to be Solved by the Invention] Since the above-mentioned long object reversing device requires a frame, the shape of the object to be reversed is limited depending on the shape of the frame, making it difficult to reverse other objects. It is often not possible to use it.

[0006] In addition, the heavy object reversing device requires mechanisms such as four electric chain hoists and two sheaves.
Not only is it mechanically complex, but since the object is rotated by the slip resistance between the object and the chain, depending on the shape and weight of the object, it is expected that the rotation will not be smooth, resulting in slipping and scratches on the object. It turns out. In addition, there may be concerns about using it for products that require precision or are vulnerable to impact.

[0007]

[Means for solving the problem] Therefore, in the present invention,
The above-mentioned drawbacks are corrected, the device is extremely simple, and
It is easy to use and can also be used for reversing articles of various shapes.The hanging parts of the two hoisting devices are each equipped with an electric rotating hook, and each hanging part is equipped with an electric rotating hook. A process of loosening one side of the inverted object suspended on the rotating hook so that the other side is suspended only by the hanging part, a process of inverting the inverted object via the sling by rotating the electric rotating hook of the hanging part, and It consists of the process of rotating the sling in the opposite direction and the process of leveling the inverted object.In addition, an electric rotating hook is installed on the hanging part of one hoisting device, etc., and it is attached to the hanging part of other hoisting devices, etc. In addition to installing a driven rotary device such as a swivel,
It is characterized by allowing reverse rotation of the sling on the side where the hanging part is loosened.

[0008]

[Example] Below. The present invention will be explained in detail with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a girder of an overhead crane on which hoists 11 and 12, which are one of two hoisting devices, are mounted so as to be able to move freely. Wire ropes 13 are attached to hoists 11 and 12.
, 14 are provided with electric rotating hooks 30, 31. Also, the electric rotating hook 31 is not used for one wire rope 14, and instead, a hook 3' and a swivel,
It is also possible to provide a driven rotator 4 such as a sulcan to enable driven rotation.

Reference numeral 5 denotes a workpiece to be reversed, which is placed on a table 6. The workpiece 5 is provided with three or four locking portions 7, 7, . . . such as eye bolts. Reference numerals 80 and 81 denote slings, one end of which is tied or locked to the locking portions 7, 7, . In addition, when using the hook 3' and a driven rotator 4 such as a swivel without using the electric rotating hook 31 on one side, the master ring 9, the sling 811, the driven rotator 4 such as a swivel, and the sling 812 are connected, and the sling 812 is It is fixed to the locking part 7. Needless to say, the driven rotator 4 such as a swivel may be placed somewhere between the hook 3' and the locking part 7. 10 is an external stop chain.

[0010] Next, how to use it will be explained. First, as shown in FIGS. 1 and 2, an electric rotating hook 30,
The master rings 9, 9 are also suspended from the hoist 11,
12 winds up the wire ropes 13 and 14, and the workpiece 5, which is engaged with the slings 80 and 81 via the master rings 9 and 9, is pulled up from the table 6. Then, as shown in Fig. 3, one wire rope 13 is pulled up to an appropriate height.
is wound up, and the other wire rope 14 is unwound to make the workpiece 5 vertical.

At this time, if the traverse brake of the hoist 12 on the lowering side is released in the reverse operation of the wire ropes 13 and 14, the hoist 1 will move as the workpiece 5 moves vertically.
2 moves sideways and follows the stationary hoist 11.

However, when the workpiece 5 becomes vertical,
A workpiece 5 is suspended from the wire rope 13 on the hoisting device 11 side via an electric rotating hook 30, a master ring 9, and a sling 80, and a master ring 9 and a sling 81 are suspended from the electric rotating hook 31 suspended from the wire rope 14. is suspended between the works 5 in a relaxed state.

Therefore, as shown in FIG.
When the electric rotary hook 30 attached to the workpiece 3 is rotated, the workpiece 5 is also rotated, rotated 180 degrees, and then stopped. As a result, the left and right sides of the suspended workpiece 5 are reversed, the sling 80 on the hanging side is also rotated, and the workpiece 5 is rotated,
The sling 81 on the relaxed side is also twisted. During this time, the hoist 12 is kept separated from the hoist 11 so as not to interfere with the rotation of the workpiece 5.

If used in this twisted state, there is a risk that the workpiece 5 will not be strong enough, and that the workpiece 5 will be rotated in the opposite direction during lifting.To prevent this, it is better to untwist the workpiece 5. Therefore, the electric rotating hook 31 suspended from the wire rope 14 is rotated 180 degrees in the opposite direction to the electric rotating hook 30 to untwist the sling 81. When the electric rotating hook 31 is not used, the twisting of the sling 81 is loosened by applying tension during subsequent lifting and by rotating the driven rotator 4 such as a swivel.

Next, the hoist 12
2 to the hoist 11 side, the wire rope 14 is hoisted up, and conversely, the wire rope 13 is lowered by the hoisting device etc. 11 to rotate the work 5 by 90 degrees and make it horizontal. At this time, the workpiece 5 is completely reversed when compared to its initial position on the table 6. At this time, the hoist 12 is spaced apart from the hoist 11 and placed at a position with the same width as the workpiece 5. Then, the wire ropes 13 and 14 are lowered by hoists 11 and 12, and the workpiece 5 is placed on the mounting tables 6 and 6. The inversion is now completed.

[0016]

According to the present invention as described above, electric rotating hooks are provided on the hanging parts of the two hoisting devices, etc., and
A process of loosening one side of the inverted object suspended on the electric rotating hook of each hanging part so that the other side is suspended only by the hanging part, and a process of inverting the inverted object via the sling by rotating the electric rotating hook of the hanging part. , consists of a process of reversely rotating the sling on the loosened side and a process of leveling the inverted object, and an electric rotating hook is provided on the hanging part of one hoisting device, etc. A driven rotator such as a swivel is installed on the hanging part of the workpiece, and the sling on the side where the hanging part is loosened is allowed to rotate in the opposite direction, so that when one end of the workpiece is lifted, it rotates vertically and the center of the lifting Rotation of the workpiece by 180°,
The extremely simple operation of rotating the workpiece by lifting it to a horizontal position in the anti-hanging direction enables the reversal of heavy objects and odd-sized objects, and the reversal can be performed mechanically without the need for manpower. However, the operation allows the object to be reversed very smoothly and without any danger.

Further, after the sling work, the work can be carried out without requiring any human intervention, so automatic operation can be performed easily. Furthermore, the mechanism for use is extremely simple, and the equipment cost is low because no special instruments or equipment are required, and the practical effects are significant, such as being able to perform the reversing work on the reversible object without scratching or damaging it.

[Brief explanation of drawings]

FIG. 1 is a front view schematically explaining an embodiment of the present invention.

FIG. 2 is a top view of the product in an operating state.

FIG. 3 is a diagram showing one side of the article in the operating state.

FIG. 4 is a rotation diagram of the article in the operating state.

FIG. 5 is a diagram of lifting an article in the same operating state as above.

FIG. 6 is a bottom view of the article in an operating state.

FIG. 7 is an inverted installation view of the article in the operating state as above.

FIG. 8 is a view showing one side of the article in the operating state of the same and other embodiments.

FIG. 9 is a side view of FIG. 8.

FIG. 10 is an explanatory diagram of a hanging state of an article according to the embodiment.

FIG. 11 is an explanatory view of hanging state of articles of the above and other embodiments.

[Explanation of symbols]

1 Girder 11 Hoist 12 Hoist 13 Wire rope 14 Wire rope 30 Electric rotating hook 31　Electric rotating hook 4. Driven rotator 5 Work 6. Stand 80 Sling 81 Sling

Claims (2)

[Claims] Claim 1: An electric rotating hook is provided on each of the hanging parts of two hoisting devices, etc., and an inverted object suspended from the electric rotating hook of each hanging part is suspended by loosening one and hanging the other by only the hanging part. A heavy object consisting of the following steps: 1. Reversing the object through the sling by rotating an electric rotating hook on the hanging part, 2. rotating the sling on the loosened side in the opposite direction, and 1. leveling the object. etc. inversion method. Claim 2: An electric rotating hook is provided on the hanging part of one hoisting device, etc., and a driven rotary device such as a swivel is provided on the hanging part of the other hoisting device, etc., and the hanging part of the hoisting device is 2. The method for reversing a heavy object, etc. according to claim 1, wherein the sling on the loosened side is allowed to rotate in the opposite direction.