JP2915821B2 - Inversion / centering device for heavy objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for reversing and centering a heavy object, in which a heavy object is suspended and inverted and centered by a crane.

[0002]

2. Description of the Related Art Heavy objects, such as large molds, bridge girders, boilers, headers, etc., may be turned over or turned over for welding, assembly, installation, etc.
Centering must be performed as necessary. As a reversing device for this heavy object, there is a conventional example shown in FIGS. 10
1 is a balance crane suspended by a crane (not shown), and two reversing machines 102a and 102b are mounted via mounting brackets in the longitudinal direction of the balance crane 101.
The structure main body , 105 is a motor attached to the reversing mechanism main bodies 102a, 102b, and 106, 107 are the motor 105
Gear 108 driven by the
The sprockets 104a and 104b driven by the sprocket 1 are the sprockets 1 of the reversing mechanism main bodies 102a and 102b.
The two chains 103a and 103b meshed with each other are two wires that hold a heavy object.
The upper ends of both sides of the chain 103b are the chains 104a, 104
b engages with hooks attached to the lower ends of both ends.

[0003] The in reversing apparatus heavy, the reversing mechanism body 102a, by driving the motor 105 in 102b, the rotation through a reduction gear 106, 107 of the sprocket 10
8 , the chain 104a, 104b and the wire 103
a and 103b are driven in the direction of the arrow in FIG. 8 to rotate and reverse the heavy object in the direction of the arrow.

[0004]

In the conventional heavy object reversing apparatus shown in FIGS. 7 and 8, when the heavy object is an eccentric load, the position of the center of gravity of the heavy object moves at the time of inversion, and the heavy object is accordingly moved. Trembles and collides with a building column or a machine tool near a reversal place, and is damaged. Further, in some cases, there is a risk that the heavy object greatly loses balance, the wires 103a and 103b holding the heavy object come off the heavy object, and the heavy object falls.

Further, since the heavy object is merely held by the wires 103a and 103b, there is a problem that the centering operation cannot be performed by changing the inclination angle of the heavy object in the longitudinal direction. The present invention is proposed in view of the above problems, and its object is to prevent damage to a building or the like due to swinging of a heavy object, prevent falling of a heavy object, and centering of a heavy object. An object of the present invention is to provide a reversing / centering device for heavy objects that can perform work.

[0006]

According to the present invention, there is provided a method for reversing and centering a heavy object according to the present invention.
The apparatus comprises a lifting frame having a balance frame suspended by a crane and three or more chain blocks attached via mounting brackets in the longitudinal direction of the balance frame. A device ,
The chain of the chain block located at both ends is
It is wound around the side of the weight object from one direction and fixed.
The chain of the other chain block is
Wound around the side from the opposite direction to the one direction and fixed
It is characterized by being.

The reversal of a heavy object according to claim 2 according to the present invention.
・ The centering device should be replaced with a wire instead of the chain block.
Or hoist is used.
You.

[0008]

The weight reversing / centering device of the present invention is constructed as described above. The balance frame is suspended by a crane, and three or more units are mounted in the longitudinal direction of the balance frame via mounting brackets. Of the chain blocks, the chains of the chain blocks on both ends are wound around a heavy object, for example, left-handed, and the tip (hook) of each chain is engaged with the heavy object (hanging piece), and the remaining central chain Wrap the chain of the block around the heavy object in a clockwise direction opposite to the above chains, and engage the tip (hook) of the chain with the heavy object (hanging piece). The chain of the chain block keeps the weight balance in the longitudinal direction of the heavy object. (B) The chain of all chain blocks keeps the weight balance in the rotation direction of the heavy object. While lowering winding a chain of Enburokku, by winding up a chain of both ends of the chain block, stably reverse the heavy,
(d) By winding and unwinding the chains of the chain blocks at both ends in opposite directions (for example, winding up the left side and winding down the right side), the inclination angle of the heavy object in the longitudinal direction is changed to perform centering. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an apparatus for reversing and centering a heavy object according to the present invention will be described with reference to an embodiment shown in FIGS. 1 to 5. Reference numeral 1 denotes a linear I-beam balance frame; Engagement pieces 2a, 2b, 2b are fixed to the upper surface of the part and the upper surfaces of both ends by welding. 10 is a crane hook,
9a, 9b are the hook 10 and the engaging pieces 2a, 2b, 2
The balance frame 1 is hung by a crane with the wire engaged with b.

Reference numeral 4 denotes a chain block in which three mounting brackets 3a, 3b, and 3c fixed to the lower surface of the balance frame 1 are suspended by the mounting brackets 4, and 7a, 7b, and 7c are chain blocks 3a, 3b, 3c chains, 8
Reference numerals a, 8b and 8c denote hooks attached to the ends of the chains 7a, 7b and 7c. Reference numeral 5 denotes a heavy object, and reference numeral 6 denotes a suspension piece attached to the heavy object 5 corresponding to each of the hooks 8.

Next, the heavy object shown in FIGS.
The operation of the centering device will be specifically described. The balance frame 1 is suspended by the hook 10 of the crane and the wires 9a, 9b, and three chain blocks 3a, 3b,
3c, the chains 7a, 7c of the chain blocks 3a, 3c at both ends are wound around the heavy object 5 in a left-handed manner, for example, and the hooks 8a, 8 at the tips of the chains 7a, 7c are wound.
c is engaged with the suspending pieces 6, 6 of the heavy object 5 (see FIG. 2), and the chain 7b of the remaining center side chain block 3b is wound right around the heavy object 5 in the opposite direction to the chains 7a, 7c. After engaging the hook 8b at the tip end of each chain 7b with the hanging piece 6 of the heavy load 5 (see FIG. 3), (a) the chain 7 of the chain blocks 3a and 3c at both ends.
By a and 7c, the weight balance of the heavy object 5 in the longitudinal direction is maintained.

(B) All chain blocks 3a, 3b,
The weight balance of the heavy object 5 in the rotating direction is maintained by the chains 7a, 7b, 7c of 3c. (c) The reversal, the overturn, and the centering of the heavy object 5 are performed in the following manner. FIG. 4 shows a state in which the weight 5 is turned over and turned over.
At this time, the crane is operated, and the hook 10 and the wire 9 are operated.
a, 9b, balance frame 1, and chain blocks 3a, 3
b, 3c and the chains 7a, 7b, 7c, lift the heavy object 5, and then operate the chain block 3b in, for example, the unwinding direction to wind the chain 7b around the heavy object 5, and The chain block 3b is operated in the hoisting direction by, for example, the same amount as the unwinding amount of the chain block 3b, so that the chains 7a and 7c are unwound with respect to the heavy object 5, and the heavy object 5 is freely rotated in the air while being lifted. (Rotate counterclockwise in FIG. 4) to turn the heavy object 5 upside down or side down.

At this time, the heavy object 5 is attached to the chains 7a, 7a.
Since it is supported by b and 7c, it can be safely turned or turned over. FIG. 5 shows a state in which the heavy object 5 is centered. At this time, the chain blocks 3a and 3c are opposed to each other (in FIG. 5, the chain block 3a is wound up and the chain block 3c is lowered).
The centering is performed by changing the inclination angle of the heavy object 5 in the longitudinal direction.

In the above embodiment, a chain block is used as the lifting mechanism, but a winch or a hoist may be used instead of the chain block. Although three lifting mechanisms are used, the same operation can be achieved with four lifting mechanisms.

[0015]

The reversing / centering device for heavy objects according to the present invention is constructed by suspending the balance frame by the crane as described above, and mounting the three or more chain blocks attached via mounting brackets in the longitudinal direction of the balance frame. For example, the chains of the chain blocks on both ends are wrapped around a heavy object, for example, left-handed, and the tip (hook) of each chain is engaged with the heavy object (hanging piece). Is wrapped around a heavy object in a clockwise direction opposite to the above chains, and the tip (hook) of the chain is engaged with the heavy object (hanging piece). The chain keeps the weight balance of the heavy object in the longitudinal direction, and (b) The chain of all chain blocks keeps the weight balance of the heavy object in the rotation direction.
(c) While the chain of the center side chain block is lowered, the heavy object is stably turned upside down by winding up the chain of the chain block on both ends, and (d) the direction opposite to the chain of the chain block on both ends. (E.g., the left-hand side and the right-hand side) change the inclination angle of the heavy object in the longitudinal direction, and perform centering. Therefore, damage to a building or the like due to swing of the heavy object may be prevented. Thus, heavy objects can be prevented from dropping and heavy objects can be centered.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a reversing / centering device for heavy objects according to the present invention.

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

FIG. 3 is a vertical sectional front view taken along the line BB in FIG. 1;

FIG. 4 is an explanatory view of the operation of the reversing / centering device for reversing the heavy object during reversing.

FIG. 5 is an explanatory diagram of the operation of the reversing / centering device for the heavy object at the time of centering.

FIG. 6A is an operation explanatory view at the time of inversion in another embodiment using four lifting mechanisms, and FIG. 6B is an operation explanatory view at the time of centering in the embodiment.

FIG. 7 is a front view showing a conventional reversing device.

FIG. 8 is a side view showing a conventional reversing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Balance frame 2a, 2b, 2b Engagement piece 3a, 3b, 3c Chain block 4 Mounting bracket 5 Heavy object 6 Hanging piece 7a, 7b, 7c Chain 8a, 8b, 8c Hook 9a, 9b Wire 10 Crane hook

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takanobu Masuda 1-1-1, Wadazakicho, Hyogo-ku, Kobe City, Hyogo Prefecture Inside Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (56) References Japanese Utility Model sho 59-100785 ( JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B66C 1/00-1/68 B66C 13/08

Claims (2)

(57) [Claims] 1. A reversing / removing machine for a heavy object comprising a lifting mechanism having a balance frame suspended by a crane and three or more chain blocks attached via mounting brackets in the longitudinal direction of the balance frame. centering device met
The chain of the chain block located at both ends
It is wound around the side of the weight object from one direction and fixed, and the other chain of the chain block is
It is wound around the side of the object from a direction opposite to the one direction and fixed.
A reversing / centering device for heavy objects, characterized in that it is fixed . 2. A winch instead of the chain block
2. The apparatus for reversing and centering a heavy object according to claim 1 , wherein a hoist or a hoist is used .