JP2002046977A - Rotary hoisting accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary hoisting accessory that can hold every type of workpiece, including a column core, rotatable to a vertical and a horizontal attitude and can facilitate work on the workpiece such as machining and transferring. SOLUTION: The rotary hoisting accessory comprises a main frame 1 suspended from an overhead traveling crane and the like, and a portal type turning frame 2 supported by the main frame 1 for vertical turning motion. The turning frame 2 has a holding mechanism for holding a workpiece while aligning the center of gravity of the workpiece with the center of turning of the turning frame 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanging tool for hanging a work such as a column core used for constructing a steel frame structure, and more particularly to rotating a work and mounting the work on a working table or the like in various postures. The present invention relates to a rotary hanger that can be used.

[0002]

2. Description of the Related Art A large number of column cores used for construction of a steel structure are formed by welding a diaphragm to both ends of a square or circular steel pipe. The handling of the column core is generally carried and held by a crane sling operation. In some cases, a dedicated holding tool is provided on a hook of a crane, and the column core is held by the holding tool to carry out a transport operation.

[0003]

However, in holding and transporting by crane slinging, not only the work of slinging becomes complicated, but also the safety is problematic because the weight of the column core is relatively large. Various types of dedicated holding tools are known, but most of them hold the column core in a fixed posture. For this reason, when performing various operations while placing the column core on the processing table, it is difficult to rotate the column core in various ways, and the operation efficiency is reduced.

[0004] As described above, a hanger that can be said to be optimal for transporting the column core or mounting the column core in a rotated position has not been developed at present. And not only the column core but also various other similar products have similar problems.

[0005] Therefore, the present invention provides a rotary hanger capable of rotating and holding various kinds of works such as a column core in a vertical or horizontal posture, thereby facilitating operations such as working and transporting the works. The purpose is to:

[0006]

A rotary hanging device according to the present invention comprises a main frame suspended by an overhead traveling crane or the like, and a gate-shaped pivot supported by the main frame and capable of rotating vertically. And a holding mechanism for holding the work by aligning the center of gravity of the work with the center of rotation of the rotation frame.

According to the present invention, since the work is held such that the center of rotation of the rotation frame coincides with the center of gravity of the work, the moment around the rotation frame when the rotation frame is turned to a horizontal posture, for example, is reduced. It can be made smaller and the work can be held stably.

[0008] In the present invention, the rotating frame comprises a horizontal member and a vertical member vertically connected from both ends thereof.
The vertical member is connected to a support shaft rotatably provided on the main frame, and the holding mechanism is connected to substantially the center of the horizontal member so as to be movable in the extending direction of the vertical member to suck and hold the work. It can be a magnet.

In this configuration, the center of gravity of the work can be made coincident with the center of rotation of the rotating frame by setting the position of the magnet.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway front view of a rotary hanging device according to an embodiment of the present invention, FIG. 2 is a view taken along line AA of FIG. 1, and FIG. 3 is a right side view of FIG. .

In the figure, a rotary hanging tool mainly comprises a gate-shaped main frame 1 which is hooked on a hook of a traveling crane, and a rotating frame 2 which is incorporated inside the main frame 1 and is rotatable in a vertical direction. It is configured as a member. The main frame 1 includes a horizontal member 1a and vertical members 1b and 1c protruding downward from both ends thereof.
In the center of the upper end of a, a reverse U for hanging on a crane hook
It has a bracket 1d in the shape of a letter. A support shaft 3 is rotatably provided on the lower end side of the vertical member 1b via a bearing 3a, and a support shaft 4 is similarly provided on the other vertical member 1c by a bearing (not shown).
Is rotatably mounted.

The support shaft 3 has a length protruding outside the right end surface of the vertical member 1b, and is provided with an operation handle 5 via a key 3b.
Are slidably provided in FIG. As shown in FIG. 3, the operation handle 5 has three holes 5a formed at an angle pitch of 90 °. Of these holes 5a, a key 3b is provided at a portion radially opposed to the center hole 5a. Is formed in the key groove. One end 5 of the vertical member 1b facing the operation handle 5 is provided in the end surface.
The holding pin 6 that fits into the portion a is fixed. That is, in FIG. 1, the position of the hole 5a of the operation handle 5 at the position of the two-dot chain line is aligned with the holding pin 6, and when the operation handle 5 is moved to the left, the holding pin 6 Get inside. At this time, the operation handle 5
Is stopped by the rotation restricted by the holding pin 6. In FIG. 3, when the holding pin 6 enters the center hole 5a, the rotating frame 2 is held in a vertical state, and when the holding pin 6 enters the right hole 5a, the rotating frame 2 is turned clockwise by 90 °. When the holding pin 6 moves further into the hole 5a on the left side, the rotating frame 2 rotates 90 ° counterclockwise. FIG. 4 is a cutaway view of a main part showing an engagement state between the holding pin 6 and the operation handle 5.

The rotating frame 2 is also gate-shaped, like the main frame 1, and has a horizontal member 2a and vertical members 2 connected to both left and right ends thereof.
b, 2c. The vertical members 2b and 2c are integrally connected to the support shafts 3 and 4, respectively, and a weight housing 7 is fixed to a lower end thereof. As shown in FIGS. 2 and 3, the weight housing 7 includes a vertical member 2b,
A rectangular steel pipe arranged in a posture orthogonal to 2c is used, and a weight 7a is housed therein so that the position thereof can be changed in the vertical direction in FIG.

A magnet 8 for adsorbing a member such as a column core is connected to the center of the horizontal member 2a of the rotating frame 2. The magnet 8 uses a permanent magnet and has a rectangular planar shape as shown in FIG.
Are attached together. This bolt 8a is a horizontal member 2a
Are screwed into adjustment handles 9 and 10 arranged above and below the magnet 8.
Can be freely changed, and the center of gravity of the work can be held in alignment with the center of rotation of the rotating frame 2, that is, the axis of the support shafts 3, 4. On the side of the magnet 8, a separation lever 8b using a lever for forcibly separating the attracted member is used.
Is rotatably mounted.

Here, since the magnet 8 is connected to the horizontal member 2a of the rotating frame 2 and the adjusting handles 9, 10 are attached, these magnets 8 and the adjusting handles 9, 1 are attached.
A weight of 0 is added. Therefore, when rotating the rotating frame 2, the rotational moment about the axis of the support shafts 3 and 4 increases by the weight of the magnet 8 and the adjustment handles 9 and 10. On the other hand, the lower ends of the vertical members 2b and 2c are provided with the weight housing 7, and the moment including the weight of the weight 7a provided therein can be increased. That is, the moment around the axis of the support shafts 3 and 4 can be set to substantially the same level as the horizontal member 2a side by the weight of the weight housing 7 and the weight 7a.

In the above configuration, the work procedure for holding the column core as a work and rotating its posture is as follows. The column core 50 is a rectangular hollow steel tube, and the upper and lower ends of the column core 50 are made of a steel plate diaphragm 5.
1, 52 are fixed.

First, the rotary hanger of the present invention is moved to a position where the column core 50 is stored by using a traveling crane to be positioned directly above the column core 50. Then
1 and 2 by lowering the crane hook
As shown in FIG. 5, the column core 50 is housed in the rotating frame 2, and the upper diaphragm 51 is attracted by the magnet 8. At this time, the height of the magnet 8 is set so that the axis of the support shafts 3 and 4 and the position of the center of gravity of the column core 50 in which the diaphragms 51 and 52 are integrated coincide. That is, the height of the magnet 8 is adjusted by the adjusting handles 9 and 10, and the distance between the attracting surface of the magnet 8 and the axis of the support shafts 3 and 4 is determined by the column core 50 and the diaphragms 51 and 5.
2 is set to be と of the total length.

Column core 50 attracted by magnet 8
Is integrated with the rotating frame 2, and lifts the main frame 1 by raising the crane hook. Next, the operating handle 5 is shifted to the position indicated by the two-dot chain line in FIG. 1, and the holding pin 6 is pulled out from the hole 5a so that the rotating frame 2 can freely rotate. Then, after rotating the rotating frame 2 in the clockwise direction in FIG. 3 by 90 °, three holes 5 in FIG.
The operating handle 5 is moved from the position indicated by the two-dot chain line in FIG. 1 to the position indicated by the solid line in FIG. 1 such that the holding pin 6 enters the hole 5a located at the right end of the position a. Thereby, the operation handle 5 is restrained to the posture of FIG. 5, and the rotating frame 2 is set to the horizontal posture. Therefore, the column core 50 has a horizontal posture as shown in FIG. Also, the rotating frame 2 is shown in FIG.
In this case, the column core 50 can be brought into contact with and lifted from the side surface, and can be turned 90 ° or 180 ° counterclockwise. Furthermore, if a hole 5a is opened at a specific position of the operation handle 5 as necessary, the operation of rotating the column core 50 to an arbitrarily designated angle becomes possible.

Here, the rotating frame 2 has a horizontal member 2a.
The weight balance between the side and the distal ends of the vertical members 2b and 2c is maintained by the weight 7a in the weight housing 7. The column core 50 including the diaphragms 51 and 52
Is set so as to coincide with the axis of the support shafts 3 and 4. Therefore, the rotating frame 2 and the column core 50 around the support shafts 3 and 4 are balanced and held without a rotational moment. Therefore, even if the column core 50 is cantilevered by the magnet 8, the column core 50 can be stably held in a horizontal state.

When the operation is completed, the operation handle 5 is rotated to return to the posture shown in FIGS. When the separation lever 8b is rotated clockwise in FIG. 1, the separation lever 8b contacts the diaphragm 51, and the diaphragm 51 can be separated from the magnet 8 using the principle of leverage.

As described above, the rotating frame 2 can be set to a vertical or horizontal posture while the main frame 1 is hung on the crane hook. Further, since the magnet 8 is provided as a holding mechanism, the column core 50 and the diaphragm 51,
Each surface of the diaphragms 51 and 52 can be easily lifted by sucking and holding each surface of the diaphragms 52 and 52 to a required posture.
Column core 50 can be rotated. Therefore, the posture of the column core 50 can be variously changed,
Responsiveness to various operations including transportation can be improved. For example, when any processing is performed on the column core 50, the column core 50 can be placed on a processing table or the like in a posture that allows easy processing, and the processing of the column core 50 can be performed efficiently.

In the embodiment, the column core is used as the work, but the movement and the rotation of the posture of other similar products can be dealt with in the same manner.

[0024]

According to the present invention, since the center of gravity of the work such as the column core is held so as to coincide with the center of rotation of the rotating frame, even when the rotating frame is rotated to a horizontal posture, it is rotated. Work can be stably held without the frame swinging. In addition, since the work can be continuously lifted, transported, rotated and wholesaled, work such as retightening of the work during the work becomes unnecessary, and the position of the holding mechanism can be adjusted even when a large amount of the same work is handled. The work can be continued only by adjusting once, and the workability for the work can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a rotary hanging device of the present invention.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a right side view of the rotary hanging device of FIG. 1;

FIG. 4 is a cutaway view of a main part showing an engagement between an operation handle and a holding pin.

FIG. 5 is a right side view showing a state in which the rotating frame is turned to a horizontal posture to hold a column core.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main frame 1a Horizontal member 1b, 1c Vertical member 1d Bracket 2 Rotating frame 2a Horizontal member 2b, 2c Vertical member 3 Support shaft 3a Bearing 3b Key 4 Support shaft 5 Operation handle 5a Hole 6 Holding pin 7 Weight housing 7a Weight 8 Magnet 8a Bolt 8b Separation lever 9,10 Adjustment handle 50 Column core 51,52 Diaphragm

Claims (2)

[Claims] 1. A main frame suspended by an overhead traveling crane or the like, and a gate-shaped rotary frame supported by the main frame and capable of operating in a vertical direction, wherein the rotary frame includes A rotary hanging tool comprising: a holding mechanism that holds a work by aligning the center of gravity of the work with the center of rotation of a rotating frame. 2. The rotating frame includes a horizontal member and a vertical member vertically connected from both ends of the horizontal member. The vertical member is connected to a support shaft rotatably provided on the main frame, and the holding mechanism is provided. 2. The rotary hanging tool according to claim 1, wherein a magnet is connected to a substantially center of the horizontal member and is movable in an extension direction of the vertical member to attract and hold the work.