JP6721625B2 - Balance for adjusting the center of gravity - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balance adjusting balance, and more particularly to a balance adjusting balance that can be used even in a situation where the lifting height of a suspended load is small and that allows fine adjustment of balance easily.

For example, in the construction of a high-rise building, when hanging wall members such as curtain walls and panels from the lower layers with a crane and attaching them to the side of the building, the steel frames and scaffolding on the upper floor become an obstacle, and the crane hooks are used as wall members. It may not be possible to approach the installation position of.

As a solution to this, there is a balance type balance as shown in FIG. Hereinafter, this balance type balance is referred to as a conventional balance 1.

As shown in FIG. 3, in the conventional balance 1, the balance rod 12 is hung on the hook 11 of the crane, the balance weight 13 is attached to one end of the balance rod 12, and the other end of the balance rod 12, that is, the end portion on the building side is hung. The wall member 14 is suspended.

According to the conventional balance 1, if the balance weight 13 is adjusted and balanced with the wall member 14, the wall member 14 can be attached to the side surface 15 of the building while the balance rod 12 is kept horizontal.

According to the conventional balance 1, the wall member 14 can be lifted by the crane and attached to the side surface 15 of the building even if there is a steel frame or scaffolding on the upper floor. However, when attaching the wall member 14 to the side surface 15 of the building, When the member 14 is removed from the balance rod 12, the balance is lost and the balance rod 12 and the balance weight 13 move in the direction shown in FIG. As a result, there is a safety problem and the position of the hook 11 also moves, which makes it difficult to mount the next wall member 14 and operate the crane.

Therefore, Patent Document 1 discloses a balance type balance capable of solving the above problems.

Hereinafter, this balance type balance is referred to as a conventional balance 2 and will be described with reference to the drawings.

FIG. 5 is a front view showing the conventional balance 2.

As shown in FIG. 5, in the conventional balance 2, a balance rod 21 having pulleys 17 and 18 attached to both ends is hung on a hook 16 of a crane, and a balance weight 21 and a shackle 22 are attached to a center portion of the balance rod 19 by a wire rope 20. The suspended load 24 is suspended via the pulleys 17 and 18 on the other end of the wire rope 23 whose one end is attached to the shackle 22.

According to the conventional balance 2, when the balance bar 19 is lifted by the crane, the suspended load 24 descends and the balance weight 21 moves as shown by an arrow in the figure until the weights of the balanced weight 21 and the suspended load 24 are balanced. Move in the direction of pulley 17. As a result, when the suspended load 24 is, for example, the above-mentioned wall member, the wall member can be hoisted by a crane and attached to the side surface 15 (see FIG. 3) of the building even if there are steel frames and scaffolding on the upper floor. it can.

Moreover, when the suspended load 24 is removed from the balance rod 19, the balance weight 21 moves to the central portion of the balance rod 19, so that the balance rod 19 remains horizontal. As a result, safety issues do not occur. Moreover, since the position of the hook 16 does not move, it does not hinder the work of attaching the next wall member and the operation of the crane.

JP, 9-315760, A

As described above, according to the conventional balance 2, since the balance bar 19 remains horizontal even after the hanging load 24 is removed from the balance bar 19, there is no safety problem. Moreover, since the position of the hook 16 does not move, it does not hinder the work of attaching the next wall member and the operation of the crane, but there are the following problems.

When the weight of the suspended load 24 is large, the amount of movement of the balance weight 21 is large, and accordingly, the amount of downward movement of the suspended load 24 is large. As a result, when the lift of the suspended load 24 is limited, it may not be possible to deal with it. Moreover, fine adjustment of the balance cannot be easily performed.

Therefore, an object of the present invention is to provide a balance for adjusting the center of gravity of a bar, which can cope with a situation in which the lifting height of a suspended load is small and which allows easy fine adjustment of the balance.

The present invention has been made to achieve the above object, and is characterized by the following.

The invention according to claim 1 is a first balance rod suspended from a crane, and a pair of balance weight chain blocks attached to one end of the first balance rod at intervals in the longitudinal direction of the first balance rod. A balance weight that is hung from a hanging hook of the pair of balance weight chain blocks via a hanging jig, the hanging hook being hung together on the hanging jig, It is characterized in that a suspended load is hung on the other end of the first balance rod.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the suspended load is suspended from the other end of the first balance rod through a pair of suspended chain blocks. Is.

According to a third aspect of the invention, in the second aspect of the invention, a second balance rod is attached to the hanging load chain block, and the suspended load is hung from the second balance rod. Is to have.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the balance weight is attached to the suspension jig, and a chain block for adjusting the height of the balance weight is provided. It is characterized in that it can be hung from the hanging hook.

A fifth aspect of the invention is characterized in that, in the invention according to any one of the first to fourth aspects, the suspending jig is a shackle.

The invention according to claim 6 is the invention according to any one of claims 1 to 5, characterized in that the suspended load is a duct of a thermal power generation facility.

According to the present invention, the position of the balance weights can be adjusted and balanced by the pair of chain blocks for balance weights, so that it is possible to cope with the situation where the lift of the suspended load is small.

Further, according to the present invention, the fine balance adjustment can be easily performed by using the pair of balance weight chain blocks.

It is a front view which shows the balance for gravity center adjustment of this invention. It is a front view which shows the state which lifted the suspended load with the balance for gravity center adjustment of this invention. It is a front view which shows the state which lifted the wall member by the conventional balance 1. It is a front view which shows the conventional balance 1 after removing a wall member from the balance bar. It is a front view which shows the conventional balance 2.

One embodiment of the balance adjusting balance of the present invention will be described with reference to the drawings.

FIG. 1 is a front view showing a center of gravity adjustment balance of the present invention, and FIG. 2 is a front view showing a state in which a suspended load is lifted by the center of gravity adjustment balance of the present invention.

In FIG. 1 and FIG. 2, 1 is a first balance rod that is hung from a crane 2, and 3a and 3b are a pair of rods attached to one end of the first balance rod 1 at intervals in the longitudinal direction of the first balance rod 1. The balance weight chain blocks 4 are balance weights. The balance weight 4 is hung on the hanging hooks 5 of the pair of balance weight chain blocks 3a and 3b via a shackle hanging jig 6 and a height adjusting chain block 7 of the balance weight 4. The hanging hooks 5 of the pair of balance weight chain blocks 3 a and 3 b are collectively hung on the hanging jig 6.

8 is a suspended load. The suspended load 8 is suspended from the other end of the first balance rod 1 via a pair of suspended load chain blocks 9a and 9b and a second balance rod 10.

In order to hoist the suspended load 8 by the center of gravity adjusting balance of the present invention configured as described above, the balance weight 4 is suspended from the pair of balance weight chain blocks 3a and 3b as shown in FIG. The hook 5 is hung on the hook 5 via the hanging jig 6 and the height adjusting chain block 7 of the balance weight 4.

Then, the suspended load 8 is suspended from the pair of suspended chain blocks 9a and 9b via the second balance rod 10.

In this state, when the first balance rod 1 is lifted by the crane 2 and the first balance rod 1 is not maintained in the horizontal state, one of the pair of balance weight chain blocks 3a and 3b is operated to make the first balance rod 1 horizontal. Balance to maintain.

That is, when the first balance rod 1 tilts toward the suspended load 8, the one balance weight chain block 3a is extended and the other balance weight chain block 3b is contracted until the first balance rod 1 remains horizontal. , The balance weight 4 is moved in the direction of the arrow in the figure.

On the other hand, when the first balance rod 1 tilts to the balance weight 4 side, one balance weight chain block 3a is contracted and the other balance weight chain block 3b is extended.

This allows the crane 2 to lift the load 8 while the first balance rod 1 is kept horizontal.

As described above, since the balance adjustment of the first balance rod 1 is manually performed, fine adjustment of the balance can be easily performed. Moreover, since the balance weight 4 can be balanced without moving the suspended load 8 in the vertical direction as in the conventional balance 2, it is possible to cope with a situation in which the lift of the suspended load 8 is small.

If it is necessary to adjust the height of the balance weight 4, the height adjusting chain block 7 is operated.

When the suspended load 8 is a substance that is difficult to balance, such as a duct of a thermal power generation facility, the pair of suspended load chain blocks 9a and 9b is operated to balance the suspended load.

As described above, according to the present invention, the position of the balance weight 4 can be adjusted and balanced by the pair of balance weight chain blocks 3a and 3b, so that the lifting height of the suspended load 8 is small. Can respond.

Further, according to the present invention, fine adjustment of the balance can be easily performed by using the pair of balance weight chain blocks 3a and 3b.

Further, according to the present invention, by suspending the suspended load 8 via the pair of suspended load chain blocks 9a and 9b and the second balance rod 10, the balance of the suspended load 8 can be easily adjusted.

1: 1st balance bar 2: Crane 3a, 3b: Balance weight chain block 4: Balance weight 5: Suspended hook 6: Suspended jig 7: Height adjustment chain block 8: Suspended load 9a, 9b: Suspended Chain block for cargo 10: Second balance rod 11: Hook 12: Balance rod 13: Balance weight 14: Wall member 15: Side of building 16: Hook 17: Pulley 18: Pulley 19: Balance rod 20: Wire rope 21: Balance weight 22: Shackle 23: Wire rope 24: Suspended load

Claims (6)

A first balance rod hung on a crane, a pair of balance weight chain blocks attached to one end of the first balance rod at intervals in the longitudinal direction of the first balance rod, and a pair of balance weight chain blocks. And a balance weight that is hung from a hanging hook of the first balance rod by a hanging jig. The hanging hook is collectively hung on the hanging jig and is hung on the other end of the first balance rod. A balance for adjusting the center of gravity, which is hung. The balance for balance adjustment according to claim 1, wherein the suspended load is suspended from the other end of the first balance rod through a pair of suspended chain blocks. The balance balance adjusting balance according to claim 2, wherein a second balance rod is attached to the hanging load chain block, and the hanging load is hung on the second balance rod. 4. The balance weight is hung from a hanging hook of a chain block for height adjustment of the balance weight, which is attached to the hanging jig. Balance for adjusting the center of gravity described in. The balance adjusting balance according to any one of claims 1 to 4, wherein the hanging jig is a shackle. The balance for balance adjustment according to any one of claims 1 to 5, wherein the suspended load is a duct of a thermal power generation facility.

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