JP2019177964A - Balance for center of gravity adjustment - Google Patents

Abstract

To provide a balance for the center of gravity adjustment capable of handling a condition with a low lifting height of a suspended load and moreover of easily performing a fine adjustment of a balancing.SOLUTION: A balance for the center of gravity adjustment consists of a first balance rod 1 suspended on a crane 2, a pair of chain blocks 3a, 3b for a balance weight attached at intervals to one end of the first balance rod 1 in the longitudinal direction of the first balance rod 1, and of the balance weight 4 suspended by suspension hooks 5 of a pair of the chain blocks 3a, 3b for the balance weight via a suspension jig 6. The suspension hooks 5 are hung on the suspension jig 6 together and a suspended load 8 is suspended at the other end of the first balance rod 1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a center-of-gravity adjustment balance, and more particularly to a center-of-gravity adjustment balance that can cope with a situation in which the lift of a suspended load is small and can easily finely adjust the balance.

  For example, in the construction of high-rise buildings, when a wall member such as curtain wall or panel is lifted by a crane in order from the lower layer and attached to the side of the building, the steel frame or scaffolding on the upper floor gets in the way, and the crane hook is used as a wall member. May not be close to the mounting position.

  As this solution, 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, the conventional balance 1 suspends a balance rod 12 from a crane hook 11, attaches a balance weight 13 to one end of the balance rod 12, and hangs a load on the other end of the balance rod 12, that is, an end on the building side. 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 in a state where the balance rod 12 is kept horizontal.

  According to the conventional balance 1, the wall member 14 can be lifted by a crane and attached to the side surface 15 of the building even if there is a steel frame or a scaffold on the upper floor. However, when the wall member 14 is attached 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, a safety problem arises, and the position of the hook 11 also moves, so that there is a problem that it becomes difficult to perform the next wall member 14 mounting operation and crane operation.

  Therefore, Patent Document 1 discloses a balance type balance that can solve the above problem.

  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 19 having pulleys 17 and 18 attached to both ends is suspended from a crane hook 16, and a balance weight 21 is shackled 22 by a wire rope 20 at the center of the balance rod 19. The suspended load 24 is suspended via pulleys 17 and 18 on the other end of the wire rope 23 attached to the shackle 22 at one end.

  According to the conventional balance 2, when the balance rod 19 is lifted by a crane, the suspended load 24 is lowered until the weights of the balance weight 21 and the suspended load 24 are balanced, and the balance weight 21 is indicated by an arrow in the figure. Move in the direction of pulley 17. As a result, when the suspended load 24 is, for example, the wall member described above, the wall member can be lifted by a crane and attached to the side surface 15 (see FIG. 3) of the building even if there is a steel frame or a scaffold on the upper floor. it can.

  In addition, when the suspended load 24 is removed from the balance bar 19, the balance weight 21 moves to the center of the balance bar 19, so that the balance bar 19 is kept horizontal. As a result, no safety problem arises. Moreover, since the position of the hook 16 does not move, it does not hinder the next wall member mounting operation and crane operation.

JP-A-9-315760

  As described above, according to the conventional balance 2, even after the suspended load 24 is removed from the balance rod 19, the balance rod 19 remains horizontal, so that there is no safety problem. Moreover, since the position of the hook 16 does not move, there is no problem in the following wall member mounting operation and crane operation, 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 becomes large, and accordingly, the descending amount of the suspended load 24 increases. As a result, when the lift of the suspended load 24 is limited, there is a possibility that it cannot be handled. Further, fine adjustment of the balance cannot be easily performed.

  Accordingly, an object of the present invention is to provide a bar center-of-gravity adjustment balance that can cope with a situation where the lift of a suspended load is small and that can easily perform 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, a pair of balance weight chain blocks attached to one end of the first balance rod at an interval in the longitudinal direction of the first balance rod, A balance weight suspended from a suspension hook of the pair of balance weight chain blocks via a suspension jig, the suspension hook being hung together on the suspension jig, It is characterized in that a suspended load is suspended from 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 via a pair of suspended load chain blocks. It is.

  According to a third aspect of the present invention, in the second aspect of the present invention, a second balance rod is attached to the suspended load chain block, and the suspended load is suspended from the second balance rod. It is what has.

  The invention according to claim 4 is the chain block for adjusting the height of the balance weight, wherein the balance weight is attached to the suspension jig in the invention according to any one of claims 1 to 3. It is characterized by being hung on the hanging hook.

  The invention described in claim 5 is characterized in that, in the invention described in any one of claims 1 to 4, the hanging jig is formed of a shackle.

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

  According to the present invention, since the balance weight can be adjusted by adjusting the position of the balance weight by the pair of balance weight chain blocks, it is possible to cope with a situation where the lift of the suspended load is small.

  According to the present invention, fine adjustment of the balance 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 with the conventional balance 1. FIG. It is a front view which shows the conventional balance 1 after removing a wall member from a balance rod. It is a front view which shows the conventional balance 2. FIG.

  An embodiment of the balance for adjusting the center of gravity of the present invention will be described with reference to the drawings.

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

  In FIG. 1 and FIG. 2, reference numeral 1 denotes a first balance bar that is suspended from a crane 2, and 3 a and 3 b denote a pair of first balance bars 1 attached to one end of the first balance bar 1 at intervals in the longitudinal direction of the first balance bar 1. The balance weight chain block 4 is a balance weight. The balance weight 4 is suspended from the suspension hooks 5 of the pair of balance weight chain blocks 3a and 3b via a suspension jig 6 made of shackles and a height adjustment 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 hung together on a 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 9 a and 9 b and a second balance rod 10.

  In order to lift the suspended load 8 with the thus-configured center of gravity adjusting balance of the present invention, as shown in FIG. 2, the balance weight 4 is suspended by a pair of balance weight chain blocks 3a and 3b. It is suspended on the hook 5 via a suspension jig 6 and a chain block 7 for adjusting the balance weight 4 height.

  Then, the suspended load 8 is suspended from the pair of suspended load chain blocks 9 a and 9 b 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 does not maintain the level, the first balance rod 1 is horizontally operated by operating one of the pair of balance weight chain blocks 3a and 3b. Balance to maintain.

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

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

  Thereby, the suspended load 8 can be lifted by the crane 2 in a state where the first balance rod 1 is kept horizontal.

  Thus, since the balance adjustment of the first balance rod 1 is performed manually, fine adjustment of the balance can be easily performed. In addition, 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 where the lift of the suspended load 8 is small.

  When the height of the balance weight 4 needs to be adjusted, the height adjusting chain block 7 is operated.

  In addition, when the suspended load 8 is a thing that is difficult to balance, such as a duct of a thermal power generation facility, for example, the pair of suspended load chain blocks 9a and 9b are operated to balance.

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

  In addition, according to the present invention, the balance can be easily finely adjusted by using the pair of balance weight chain blocks 3a and 3b.

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

1: First balance rod 2: Crane 3a, 3b: Chain block for balance weight 4: Balance weight 5: Hook for suspension 6: Suspension jig 7: Chain block for height adjustment 8: Suspended load 9a, 9b: Suspension 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: Hanging load

Claims (6)

  A first balance rod suspended from a crane; a pair of balance weight chain blocks attached to one end of the first balance rod at an interval in the longitudinal direction of the first balance rod; and the pair of balance weight chain blocks A balance weight that is suspended from a suspension hook via a suspension jig. The suspension hook is hung together on the suspension jig and is suspended from the other end of the first balance rod. Is a scale for adjusting the center of gravity.   The center-of-gravity adjusting balance according to claim 1, wherein the suspended load is suspended from the other end of the first balance rod through a pair of suspended load chain blocks.   The center of gravity adjusting balance according to claim 2, wherein a second balance rod is attached to the suspended load chain block, and the suspended load is suspended from the second balance rod.   The balance weight is suspended from a suspension hook of a chain block for adjusting the height of the balance weight, which is attached to the suspension jig. The balance for center of gravity adjustment described in 1.   The scale for adjusting the center of gravity according to any one of claims 1 to 4, wherein the hanging jig is made of a shackle.   The scale for adjusting the center of gravity 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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