KR20140111811A

KR20140111811A - Hook block balance support device of winding device for crane

Info

Publication number: KR20140111811A
Application number: KR1020130026179A
Authority: KR
Inventors: 조덕래
Original assignee: 한국고벨주식회사
Priority date: 2013-03-12
Filing date: 2013-03-12
Publication date: 2014-09-22

Abstract

The present invention relates to a hook block balance support device of a winch for a crane. Wire rope taken out of a wire drum passes through the last lower sheave through an assistance sheave after passing through a first lower sheave on one side, or passes through the last lower sheave on the other side through the assistance sheave after passing through the first lower sheave on one side, a first upper sheave on one side, and a second lower sheave on one side, or passes through the last lower sheave through the assistance sheave after passing through the first lower sheave on one side and the first upper sheave on one side and then passing through at least one other lower sheave and upper sheave adjacent to the first lower sheave and the first upper sheave. Hence, the velocity of lifting and dropping both sides of hook block can be controlled when the wire rope starts to wind or release because of changing winding patterns of the wire rope wound in the lower sheaves and the upper sheaves using the assistance sheave, and accordingly the block can be lifted while maintaining the balance of the hook block even in idling condition when a heavy height is not hung on the hook.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hook-

The present invention relates to a hook block balance holding device for a crane lifting device, and more particularly, to a hook block balancing device for holding a hook block balance in a hoist block balancing device of a hoisting device for a crane, And more particularly to a hook block balance holding device for a hoisting device for a crane capable of adjusting a hook block balance.

As is well known, a crane refers to a machine or a machine that lifts a heavy object by using a power and horizontally transports the object. The crane is used for lifting and lowering a heavy object, a traveling operation for moving a lifted object horizontally, And the like, and these operations are combined with each other to handle heavy objects in a three-dimensional space.

Such a crane is provided with a pair of running rails, a girder provided on the running rails and fed along the running rails, and a hoist or hoisting device installed on the girders and being transported along the girders.

At both ends of the girder, a traveling wheel is mounted so as to be seated on the traveling rail, and a traveling motor is provided on the traveling wheel. Therefore, when the traveling motor is driven, the traveling wheel is rotated and the girder is transported along the traveling rail.

The hoisting device installed on the girder comprises a hoist frame for supporting the entire hoist frame on the girder, a transverse motor for mounting the hoist frame on the girder and for transporting the hoist frame along the girder, A hoisting motor connected to and driving the wire drum, and a hook connected to the lower end of the wire rope and lifted and lowered when the wire rope is wound or unwound from the wire drum.

The wire rope is sequentially wound on the lower sheaves, one end of which is wound on the wire drum, and the other end is installed on the lower sheave block, and the upper sheaves provided on the upper sheave block. The hook is coupled to the lower sheave block so that the wire rope is lifted or lowered together with the lower sheave block when the wire rope is wound or unwound on the wire drum. Here, an assembly of the lower sheave block, the lower sheave, and the hook is referred to as a hook block.

To hang a weight on a typical crane of this configuration, the drive motor is first driven to transfer the girder onto the X axis or the Y axis of the cargo. Then, the traverse motor is driven and the hoist installed on the girder is transported on the Y axis or X axis of the weight. In this way, the X-coordinate and the Y-coordinate of the hoist are matched with each other. Finally, the Hoist hoist motor is driven to lower the hooks to the bottom, ready to transfer the weight to the heavy object. Such a heavy object can be transferred to a designated place in reverse of the above-mentioned operation order.

On the other hand, when the heavy object hangs on the hook block of the hoisting device for the crane, the left and right balance of the hook block is maintained by the weight of the heavy object and the hook block is raised or lowered without tilting to one side. The hook block is raised and lowered to a side inclined to one side.

For example, if the number of the lower sheaves is 8 and the number of the upper sheaves is 8, the wire rope wound on the first lower sheave after unwinding on the wire drum is referred to as a first wire rope, and the wire rope connected to the first upper sheave on the first lower sheave When the wire rope is referred to as a two-wire rope and the wire rope is fixed to the fixed end of the upper sheave block in the last sixth lower sheave after passing through the plurality of lower sheaves and the upper sheaves is referred to as a sixteenth wire rope, When the rope begins to be unwound from the wire drum, the sixteenth wire rope is not loosely wound or unwound directly from the last lower sheave, but is loosely wound or wound around the other lower sheaves and upper sheaves during the passage.

Therefore, when the wire rope is wound or unwound on the wire drum in a no-load state in which the heavy object is not hung on the hook, one side of the hook block is first pulled upward or relaxed downwardly so that the wire rope tilts to one side. It was visually unstable and caused stress to drivers and surrounding workers.

In order to solve such a problem, a structure capable of lifting and lowering both sides of the hook block at the same time is required.

That is, two wire drums are installed, and a wire rope is wound around each wire drum. One wire rope is passed through the sheaves of one half of the total sheaves. The other wire rope is passed through the other half of the sheaves Lt; / RTI >

Since the two wire drums are rotated in this manner to simultaneously lift and lower both sides of the hook block, it is possible to prevent the hook block from being raised and lowered even when no load is applied.

However, such a conventional hoisting device for a crane requires two wire drums, two wire ropes and two wire drum driving means in order to maintain the balance of the hook block, thereby increasing the number of parts and assembling air, There arises a problem such as a large increase.

Korean Patent Registration No. 10-0891312 Korean Patent Registration No. 10-0949431

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the above problems and to provide a hoisting device for a crane capable of adjusting lifting and lowering speeds of both sides of a hook block when a wire rope is wound or unwound on a wire drum even in a no- And a hook block balance holding device for holding the hook block.

In order to achieve the above object, a hook block balance holding device of a hoisting device for a crane according to the present invention comprises: a wire drum having one end of a wire rope fixed and a wire rope wound around the wire rope; Lower sheaves joined to a lower sheave block provided at a lower portion of the wire drum and through which a wire rope is passed; Upper sheaves coupled to the upper sheave block installed between the lower sheave block and the wire drum and through which the wire rope passes; A fixed end coupled to the upper sheave block and having the other end of the wire rope passing through the lower sheaves and the upper sheaves fixed; An auxiliary sheave installed on one side of the upper sheaves and passing through the wire rope; The wire rope drawn out from the wire drum passes through the first lower sheave of one of the plurality of lower sheaves, passes through the auxiliary sheave, skips a plurality of other lower sheaves adjacent to the first lower sheave, And the other end of the wire rope is fixed to the fixed end after sequentially passing through the plurality of upper sheaves and the lower sheaves in one direction from the other side.

In order to achieve the above-mentioned and other objects, the present invention provides a hoist block balancing apparatus for a hoisting machine for a crane, comprising: a wire drum having one end of a wire rope fixed and a wire rope wound around the wire rope; Lower sheaves joined to a lower sheave block provided at a lower portion of the wire drum and through which a wire rope is passed; Upper sheaves coupled to the upper sheave block installed between the lower sheave block and the wire drum and through which the wire rope passes; A fixed end coupled to the upper sheave block and having the other end of the wire rope passing through the lower sheaves and the upper sheaves fixed; An auxiliary sheave installed on one side of the upper sheaves and passing through the wire rope; The wire rope drawn out from the wire drum sequentially passes through the first lower sheave of one side of the plurality of lower sheaves and one of the upper sheaves, the first upper sheave of one side, and the second lower sheave of one side, And the other end of the wire rope is fixed to the fixed end after sequentially passing through the plurality of upper sheaves and the lower sheaves in one direction from the other side via the last lower sheave of the other side do.

In order to achieve the above-mentioned and other objects, the present invention provides a hoist block balancing apparatus for a hoisting machine for a crane, comprising: a wire drum having one end of a wire rope fixed and a wire rope wound around the wire rope; Lower sheaves joined to a lower sheave block provided at a lower portion of the wire drum and through which a wire rope is passed; Upper sheaves coupled to the upper sheave block installed between the lower sheave block and the wire drum and through which the wire rope passes; A fixed end coupled to the upper sheave block and having the other end of the wire rope passing through the lower sheaves and the upper sheaves fixed; An auxiliary sheave installed on one side of the upper sheaves and passing through the wire rope; The wire rope drawn out from the wire drum passes through one or more lower sheaves adjacent to the first lower sheave and one or more upper sheaves adjacent to the first upper sheave via the first lower sheave on one side and the first upper sheave on one side, After passing through the plurality of other lower sheaves, passing through the last lower sheave on the other side, and sequentially passing through the plurality of upper sheaves and lower sheaves in one direction from the other side, the other end of the wire rope is passed through the fixed end As shown in Fig.

In the present invention as described above, one wire rope pulled out of the wire drum passes through the first lower sheave on one side, then passes through the last lower sheave on the other side through the auxiliary sheave, or passes through the first lower sheave on one side, After passing through the second lower sheave of one side and then through the last lower sheave of the other side through the auxiliary sheave, or by passing through the first lower sheave of one side, the first lower sheave after passing through the first upper sheave of one side, After passing through the other lower sheave and upper sheave, the last lower sheave is passed through the auxiliary sheave. Since the wire rope wound on the lower sheaves and the upper sheaves is changed by using the auxiliary sheave, the lifting and lowering speeds of both sides of the hook block can be matched when the wire rope is wound on the wire drum or starts to unwind. Therefore, even in a no-load state in which a heavy object is not suspended on the hook, the hook block is lifted and held in a state of maintaining balance.

1 is a schematic front view showing a black block balance holding device of a hoisting device for a crane of the present invention
Fig. 2 is a side view of Fig.
Fig. 3 is a schematic view showing a process in which the wire rope drawn out from the wire drum passes through the lower sheave, the auxiliary sheave, and the upper sheaves sixteen times
Fig. 4 is a schematic view showing a process in which the wire rope drawn out from the wire drum passes through the lower sheave, the auxiliary sheave, and the upper sheave eight times.
5 is a schematic view showing a process in which a wire rope taken out from a wire drum passes through a lower sheave, an auxiliary sheave,
6 is a schematic view showing a process in which a wire rope drawn out from a wire drum passes through a lower sheave, an auxiliary sheave,
Fig. 7 is a schematic view showing a process in which a wire rope drawn out from a wire drum passes through a lower sheave, an auxiliary sheave,

Specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic front view showing a black block balance holding device of a hoisting device for a crane according to the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a view showing a wire rope pulled out from a wire drum, To the sixteenth time.

A hook block balancing apparatus of a hoisting apparatus for a crane according to the present invention comprises a wire drum 10, a lower sheave 20, an upper sheave 60, a fixed end 90, and an auxiliary sheave 80.

In the wire drum 10, one end of the wire rope W is fixed and the wire rope W is wound around the wire rope W.

The lower sheaves 20 are joined to the lower sheave block 30 provided at the lower portion of the wire drum 10 and passed through the wire rope W. [ A total of eight lower sheaves 20 of FIGS. 1 to 3 are provided.

The upper sheaves 60 are coupled to the upper sheave block 70 provided between the lower sheave block 30 and the wire drum 10 and passed through the wire rope W. [ The lower sheaves 20 of FIGS. 1 to 3 are provided in a total of eight, including one auxiliary sheave 80 and one fixed end 90, totaling eight.

The fixed end 90 is coupled to the upper sheave block 70 and the other end of the wire rope W via the lower sheaves 20 and the upper sheaves 60 is fixed.

The auxiliary sheave 80 is installed on one side of the upper sheaves 60 and passes through the wire rope W. [ The auxiliary sheave 80 has a first lower sheave 20 on one side, a first upper sheave 60 and a second lower sheave 20 on which the wire rope W passes over the other lower sheaves 20, And to pass through the lower sheave 20.

The hook block balance holding device of the hoisting device for a crane having such a configuration is wound such that the wire rope W drawn out from the wire drum 10 has the following route.

The wire rope W is pulled out of the wire drum 10 to form a first lower sheave 20 on one side of the plurality of lower sheaves 20 and the upper sheaves 60, a first upper sheave 60 on one side, Through the second lower sheave 20 of the second lower sheave.

The wire rope W via the second lower sheave 20 passes through the auxiliary sheave 80 and then skips over the plurality of other lower sheaves 20 and then passes through the last lower sheave 20 on the other side.

The wire rope W passing through the last lower sheave 20 sequentially passes a plurality of upper sheaves 60 and lower sheaves 20 in one direction from the other side and then the other end of the wire rope W is fixed (90).

That is, the wire rope W passing through the eighth lower sheave 20 passes through the sixth upper sheave 60, which is the last upper sheave 60, and then through the seventh lower sheave 20, Via the sheave 60 and then through the sixth lower sheave 20. Then, after sequentially passing through the fourth upper sheave 60, the fifth lower sheave 20, the third upper sheave 60, the fourth lower sheave 20, the second upper sheave 60, and the third lower sheave 20 And is fixed to the fixed end 90.

Here, the wire rope W has a total of 16 rows when viewed from the view of FIG. 3, and the respective lines are numbered according to the order in which the wire rope W passes.

(1) Wire rope (W) - In the wire drum (10), the first lower sheave (20)

(2) wire rope (W) - the first upper sheave (60) in the first lower sheave (20)

(3) -Wire rope (W) -In the first upper sheave (60), the second lower sheave (20)

(4) -th wire rope (W) - In the second lower sheave (20), the auxiliary sheave (80)

(5) wire rope (W) - the last eighth lower sheave (20) in the auxiliary sheave (80)

(6) wire rope (W) - from the eighth lower sheave (20) to the sixth upper sheave (60)

(7) -th wire rope (W) -through the seventh lower sheave (20) in the sixth upper sheave (60)

(8) -th wire rope (W) -through the fifth upper sheave (60) in the seventh lower sheave (20)

(9) -th wire rope (W) -through the sixth lower sheave (20) in the fifth upper sheave (60)

(10) wire rope (W) - from the sixth lower sheave (20) to the fourth upper sheave (60)

(11) wire rope (W) - the fourth lower sheave (20) in the fourth upper sheave (60)

(12) wire rope (W) - the fifth upper sheave (60) in the fifth lower sheave (20)

(13) wire rope (W) - the fourth lower sheave (20) in the third upper sheave (60)

(14) -Wire rope (W) - In the fourth lower sheave (20), the second upper sheave (60)

(15) wire rope (W) - the second lower sheave (20) in the second upper sheave (60)

(16) wire rope (W) -fixed from the third lower sheave (20) to the fixed end (90)

In this case, when the first and second lower sheaves 20 and 20 are divided from the first lower sheave 20 to the fourth lower sheave 20 and the fifth lower sheave 20 to the eighth lower sheave 20, The wire rope W is connected to the wire ropes W in the order of (1), (2), (3), (4), (16), (15), (14) (12), (11), (10), (9), (8), (7), (6), and (5).

Add the digits of (1), (2), (3), (4), (16), (15), (14), and (13) Add the number of (12), (11), (10), (9), (8), (7), (6), and (5)

Therefore, even if a single wire rope W is wound on one wire drum 10 and loosened, both sides of the hook block 50 are pulled at the same speed and same force, and are lifted and loosened.

Therefore, the present invention modifies the winding pattern of the wire rope W wound on the lower sheaves 20 and the upper sheaves 60 by using the auxiliary sheave 80 so that the wire rope W is wound on the wire drum 10, The lifting and lowering speeds of both sides of the hook block 50 can be adjusted so that the hook block 50 is lifted and held in a state in which the hook block 50 maintains the balance even in a no- .

4 is a schematic view showing a process in which the wire rope W drawn out from the wire drum 10 passes through the lower sheave 20, the auxiliary sheave 80 and the upper sheave 60 eight times.

The wire rope W drawn out of the wire drum 10 passes through the first lower sheave 20 on one side of the plurality of lower sheaves 20 and after passing through the auxiliary sheave 80, The plurality of upper sheaves 60 and the lower sheaves 20 are moved in one direction from the other side through the last lower sheave 20 of the other side after skipping the plurality of other lower sheaves 20 adjacent to the sheave 20, And the other end of the wire rope W is fixed to the fixed end 90. As shown in Fig.

The wire rope W is eight in total in terms of the reference in FIG. 4, and each wire is numbered in the order in which the wire rope W passes through the wire rope W, and the first lower sheave of the four lower sheaves 20 The wire rope W is divided into the left side (1), the right side (2), the left side (2) and the left side (8), (7), (6), (5), (4) and (3) on the right.

Add the digits of (1), (2), (8), and (7) on the left to obtain 18, and the numbers on the right (6), (5), (4), Is 18.

5 is a schematic view showing a process in which the wire rope W drawn out from the wire drum 10 is passed through the lower sheave 20, the auxiliary sheave 80 and the upper sheave 60 twice.

The wire rope W is twelve in total on the basis of FIG. 5, and each wire is numbered according to the order in which the wire rope W passes, and the first lower sheave of the six lower sheaves 20 The second bottom sheave 20, the second bottom sheave 20, the third bottom sheave 20, the fourth bottom sheave 20, the fifth bottom sheave 20 and the sixth bottom sheave 20 are divided into left and right wire ropes W (1), (2), (12), (11), (10) and (9) on the left, (8), ), (5), (4), and (3).

Add the digits of (1), (2), (12), (11), (10), and (9) on the left to find 45, and the right (8) Add the number (6), (5), (4), and (3) to add 33. The force of the wire rope W transmitted to the hook block 50 by changing the passing direction of the wire rope W by using the auxiliary sheave 80 is not accurately divided as the ratio between the left and right sides is 45: The hook block 50 is dispersed to both sides.

Therefore, even if one wire rope W is wound on one wire drum 10 and loosened, both sides of the hook block 50 are pulled at a similar speed and similar force, and are lifted and loosened.

Therefore, the present invention modifies the winding pattern of the wire rope W wound on the lower sheaves 20 and the upper sheaves 60 by using the auxiliary sheave 80 so that the wire rope W is wound on the wire drum 10, The lifting and lowering speeds of both sides of the hook block 50 can be adjusted to some extent so that the hook block 50 maintains the balance to a certain degree even in a no-load state in which the heavy object is not hung on the hook 40 .

6 is a schematic view showing a process in which the wire rope W drawn out from the wire drum 10 passes through the lower sheave 20, the auxiliary sheave 80, and the upper sheave 60 twice.

The wire rope W drawn out from the wire drum 10 passes through the first lower sheave 20 on one side and the first upper sheave 60 on the other side and is connected to the two lower sheaves 20 adjacent to the first lower sheave 20, After passing through one auxiliary sheave 20 and one upper sheave 60 adjacent to the first upper sheave 60 and after passing through the auxiliary sheave 80 a plurality of other lower sheaves 20 are skipped, Via the sheave (20). The wire rope W sequentially passes through the plurality of upper sheaves 60 and the lower sheaves 20 in one direction from the other side and the other end of the wire rope W is fixed to the fixed end 90.

The wire ropes W are numbered by 20 in total on the basis of Fig. 6, numbering each row in the order in which the wire ropes W pass, and the first lower sheave of the total of ten lower sheaves 20 20 and the fifth lower sheave 20 and the sixth lower sheave 20 to the tenth lower sheave 20 to the right and left sides of the wire rope W, (2), (3), (4), (5), (6), (20), (19), (18), (17) ), (15), (14), (13), (12), (11), (10), (9), (8), .

(1), (2), (3), (4), (5), (6), (20), (19), (18) (15), (14), (13), (12), (11), (10), (9), and Add the number (8) and (7) to add 115. The force of the wire rope W transmitted to the hook block 50 by changing the direction of the wire rope W using the auxiliary sheave 80 and the direction of the wire rope W is not exactly divided as 95: The hook block 50 is dispersed to both sides.

7 is a schematic view showing a process in which the wire rope W drawn out of the wire drum 10 passes through the lower sheave 20, the auxiliary sheave 80 and the upper sheave 60 twenty-four times.

The wire ropes W are numbered by 24 in total on the basis of Fig. 7, and are numbered on the respective lines in the order in which the wire ropes W pass, and the first lower sheave of the twelve lower sheaves 20 20) to the sixth lower sheave 20 and from the seventh lower sheave 20 to the twelfth lower sheave 20 to the left and right, the wire rope W is divided into the left side (1) (2), (3), (4), (5), (6), (24), (23), (22), (21) (18), (17), (16), (15), (14), (13), (12), (11), ), (9), (8), and (7).

(2), (3), (4), (5), (6), (24), (23), (22), (21) (20), and (19), it is 150, and the right side (18), (17), (16), (15), (14) Add the number of (12), (11), (10), (9), (8), and (7) The ratio of the left and right sides is the same as 150: 150.

10: wire drum 20: lower sheave
30: lower sheath block 40: hook
50: hook block 60: upper sheave
70: upper sheave block 80: auxiliary sheave
90: Fixed end W: Wire rope

Claims

A wire drum 10 to which one end of a wire rope W is fixed and a wire rope W is wound around the wire rod;
A lower sheave (20) coupled to a lower sheave block (30) provided at a lower portion of the wire drum (10) and through which a wire rope (W) passes;
An upper sheave 60 coupled to the upper sheave block 70 installed between the lower sheave block 30 and the wire drum 10 and through which the wire rope W is passed;
A fixed end 90 coupled to the upper sheave block 70 and fixed at the other end of the wire rope W via the lower sheaves 20 and the upper sheaves 60;
And an auxiliary sheave (80) installed at one side of the upper sheaves (60) and through which the wire rope (W) passes;
The wire rope (W) drawn out from the wire drum (10)
After passing through the first lower sheave 20 of one of the plurality of lower sheaves 20 and passing through the auxiliary sheave 80, the first lower sheave 20 and a plurality of other lower sheaves 20 adjacent thereto are skipped The other end of the wire rope W passes through the upper end of the upper sheave 60 and the lower sheave 20 in the one direction from the other side via the last lower sheave 20 on the other side, 90 of the hoist block balancing device.

A wire drum 10 to which one end of a wire rope W is fixed and a wire rope W is wound around the wire rod;
A lower sheave (20) coupled to a lower sheave block (30) provided at a lower portion of the wire drum (10) and through which a wire rope (W) passes;
An upper sheave 60 coupled to the upper sheave block 70 installed between the lower sheave block 30 and the wire drum 10 and through which the wire rope W is passed;
A fixed end 90 coupled to the upper sheave block 70 and fixed at the other end of the wire rope W via the lower sheaves 20 and the upper sheaves 60;
And an auxiliary sheave (80) installed at one side of the upper sheaves (60) and through which the wire rope (W) passes;
The wire rope (W) drawn out from the wire drum (10)
A first lower sheave 20 on one side of a plurality of the lower sheaves 20 and the upper sheaves 60, a first upper sheave 60 on one side and a second lower sheave 20 on one side are sequentially passed through, A plurality of upper sheaves 60 and a plurality of lower sheaves 20 are provided in the one direction from the other side via the last lower sheave 20 of the other side after skipping the plurality of other lower sheaves 20 , And the other end of the wire rope (W) is fixed to the fixed end (90).

A wire drum 10 to which one end of a wire rope W is fixed and a wire rope W is wound around the wire rod;
A lower sheave (20) coupled to a lower sheave block (30) provided at a lower portion of the wire drum (10) and through which a wire rope (W) passes;
An upper sheave 60 coupled to the upper sheave block 70 installed between the lower sheave block 30 and the wire drum 10 and through which the wire rope W is passed;
A fixed end 90 coupled to the upper sheave block 70 and fixed at the other end of the wire rope W via the lower sheaves 20 and the upper sheaves 60;
And an auxiliary sheave (80) installed at one side of the upper sheaves (60) and through which the wire rope (W) passes;
The wire rope (W) drawn out from the wire drum (10)
One or more lower sheaves 20 adjacent to the first lower sheave 20 and one or more upper sheaves 20 adjacent to the first upper sheave 60 via one first lower sheave 20 and one first upper sheave 60, 60 to the auxiliary sheave 80. After passing through the auxiliary sheave 80, a plurality of other lower sheaves 20 are skipped and then passed through the last lower sheave 20 on the other side, And the other end of the wire rope (W) is fixed to the fixed end (90) after the wire ropes (60) and the lower sheave (20) are sequentially passed.