JPH11268881A - Slinging hook, auxiliary hoisting hook shift device for ladle crane and crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To engage a hook section with a hanger section while preventing a hoisting material from interfering with the accessory matter of a conveyed object by providing the hook section at a position apart from the hoisting center line formed in the extending direction of the hoisting material when a slinging hook is hoisted by the hoisting material. SOLUTION: An auxiliary hoisting hook 51 is provided with a hook main body 52, a hook section 53 and a counterweight 54, and the hook section 53 and the counterweight 54 are formed separately from the hook main body 52 via two bolt holes 55a, 56n and an insertion bolt respectively. A hook section 53 to be engaged with the tilt metal of a molten metal pot is protruded outward from the hoisting center line C on the auxiliary hoisting hook 51, the hook section 53 is hooked on the tilt metal after the auxiliary hoisting hook 51 is shifted in advance, and the molten metal pot with a wide range of different shapes and sizes, e.g. the other accessory matter of the molten metal pot having a projection, can be coped with. The auxiliary hoisting hook 51 can keep the balance on the right and left, and the hooking work on the tilt metal is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook for slinging and an auxiliary hook shift device and a crane for a ladle crane, and more particularly to a hook which interferes regardless of the shape and size of a conveyed object such as a ladle. TECHNICAL FIELD The present invention relates to a hook for slinging, a hook-up hook shift device for a ladle crane, and a crane that suppress the occurrence of the slack.

[0002]

2. Description of the Related Art Ladle cranes (cast pan cranes)
It is a type of overhead crane and is installed in steelmaking facilities and steelmaking facilities. The ladle crane is used for operations such as pouring molten steel into a tundish or a converter by inclining the molten steel after transporting the molten steel from a flat hearth furnace or an electric furnace into a ladle (cast pan) and transporting the molten steel. The ladle crane lifts the ladle with main winding and raises the lower part of the ladle with auxiliary winding to tilt the ladle in order to handle the hot material called molten steel. Hereinafter, the above operation will be described with reference to the drawings.

[0003] Fig. 8 shows a conventional method of pouring molten steel into a ladle using a ladle crane. As shown in FIG. 8, a main winding device 10 is mounted on a first traversing rail 1a laid on a bridge 1 running along a running lane 9.
The main trolley 2 provided with is provided. The auxiliary trolley 3 provided with the auxiliary winding device 11 is installed on the second traversing rail 1b. Cranes with large lifting loads may have two hoisting mechanisms,
The main winding refers to lifting a heavy load at a slow speed, and the auxiliary winding refers to lifting a light load quickly.

In the main winding device 10, the main winding hook 5 is engaged with the shaft 8 a of the ladle 8 to suspend the ladle 8 via the wire 4. The auxiliary winding device 11 brings the auxiliary winding hook 7A suspended via the wire 6 closer to the melting pot 8 by moving the auxiliary trolley 3, and pulls the tilting metal piece 8b provided on the side wall of the melting pot 8. Multiply. After that, the auxiliary winding device 11
By raising the auxiliary winding hook 7A, the ladle 8
The molten steel (Fe) stored in the ladle 8 is tilted around a (see the two-dot chain line in the figure), and the molten steel (Fe) is tundished (not shown).
Pour water into such.

According to the above-mentioned method, the main trolley 2 on which the main winding device 10 is installed and the auxiliary trolley 3 on which the auxiliary winding device 11 is installed are separately provided. There is a merit that the range of movement is wide and it can easily cope with the ladle 8 of different sizes. However,
On the other hand, there is a problem that equipment costs are increased.

Therefore, an apparatus shown in FIG. 9 is provided. FIGS. 9A, 9B, and 9C show an example in which the main winding device 19 and the auxiliary winding device 16 are installed on a single trolley 12. FIG. In the apparatus shown in FIG. 9, since only one trolley 12 and one traverse rail 1c for the trolley 12 are required, the equipment cost, which is a disadvantage of the apparatus shown in FIG. 8, is improved.

[0009] In the apparatus shown in FIG. 9, similarly to the apparatus shown in FIG. 8, the ladle 8 is suspended via the main winding hook 5 of the main winding device 19, and the metal pan 8 b is provided on the side wall thereof. Hook the auxiliary winding hook 7B of the auxiliary winding device 16 (FIG. 9).
(See (a) and (c)), and then the auxiliary winding hook 7B is pulled up to tilt the ladle 8 around the axis 8a.

According to the apparatus shown in FIG. 9, when the auxiliary winding hook 7B is hooked on the tilting metal piece 8b, the following operation is performed, unlike the above-described apparatus shown in FIG. First, the cylinder 13
Is retracted, the mount 15 is lifted in advance, the position of the sheave 14 attached to the mount 15 is raised, and the wire 6 wound around the sheave 14 and the auxiliary suspended by the wire 6 are lifted. The position of the winding hook 7B is shifted obliquely upward. Then, cylinder 1
By moving the piston rod 3 forward, the auxiliary winding hook 7B is moved in the original direction so as to be hooked on the tilting metal piece 8b.

[0009]

By the way, according to the above apparatus, as shown in FIG. 9 (b), when there is an accessory 8c such as a reinforcing material at the upper end of the side wall of the ladle 8, the wire 6 is attached to the accessory. The auxiliary hook 7B is attached to the tilting metal piece 8b by interfering with the
There was a problem that it could not be hooked or it was very troublesome. In general, the upper part (opening) of the ladle 8 has a larger diameter dimension than the lower part (near the bottom) of the ladle 8 in which the tilting hardware 8b is provided. Therefore, even in the ladle 8 in which the attachments 8c and the like are not formed, the upper part of the ladle 8 and the wire 6 interfere with each other, and the auxiliary winding hook 7B is successfully hooked on the tilting metal piece 8b at the lower part of the ladle 8. There was nothing.

That is, according to the above-mentioned device, the auxiliary winding device 16 is provided on the same trolley 12 as the main winding device 19 from the viewpoint of equipment cost.
Are mounted via a cylinder 13, a mounting base 15, and a sheave 14. Accordingly, the auxiliary winding hook 7B of FIG. 9 has a larger movement range than the auxiliary winding hook 7A of FIG. 8, and as a result, the auxiliary winding hook 7B of FIG.
(Or the wire 6 on which the auxiliary winding hook 7B is suspended), it was difficult to avoid the accessory 8c, and there was a great risk of interfering with the accessory 8c.

The present invention has been made in view of the above circumstances, and a hook and a ladle for slinging which are easy to suppress interference of a hook irrespective of the shape and size of a conveyed object such as a ladle. It is an object of the present invention to provide an auxiliary hook shift device and a crane for a crane.

[0012]

SUMMARY OF THE INVENTION A hooking hook according to the present invention is a hooking hook provided with a hooking portion hooked on a hanging portion of a transported object, wherein the hooking hook has a hooking hook. It is provided at a position separated from a lifting center line formed in the extending direction of the lifting material when lifted by the lifting material.

[0013] The hook for hooking of the present invention is a hook for hooking provided with a hooking portion hooked on a hanging portion of a conveyed object, wherein the hooking hook is lifted by a lifting material. It is provided at a position where interference of the hoisting material with the carried object is suppressed when the hanging member is hooked on the hanging portion provided on the side of the carried object in the folded state.

According to a first aspect of the present invention, there is provided a hook for hooking according to claim 1, wherein the hook for hooking includes a hook body and the hook provided on the hook body. A pair of mounting portions are provided at positions substantially the same distance from each other about the lifting center line, and the hook portions are detachably mounted.

The hook for hooking according to the present invention is the hook for hooking according to claim 1, wherein the hook for hooking balances the hook for hooking when the hook for hooking is lifted by the lifting material. There is a counter weight for taking.

The auxiliary hoist shift device for a ladle crane according to the present invention is an auxiliary hoist hook for an auxiliary hoist installed on a trolley, wherein the ladle suspended by the main hoist of the main hoist installed on the trolley is mounted on the trolley. The present invention is applied to a ladle crane that winds up and tilts in the ladle to pour out the molten metal stored in the ladle, shifts the position of the auxiliary hoist hook, and hooks the auxiliary hoist on the hanging part of the ladle. An auxiliary hook shift device for a ladle crane, comprising: the auxiliary hook; and a shift unit configured to shift a position of the auxiliary hook, wherein the auxiliary hook moves outward from a suspension center of the auxiliary hook. A hook portion projecting therefrom; and a counterweight provided at a symmetrical position with respect to the hook portion with respect to the hanging center.

According to a fifth aspect of the present invention, in the auxiliary hook shift device for a ladle crane according to the fifth aspect, the auxiliary hook is replaced by the auxiliary hook hook instead of the counterweight. A pair of hook portions projecting outward from the hanging center of the winding hook at symmetrical positions are provided.

According to a fifth aspect of the present invention, in the auxiliary hook shift device for a ladle crane, the auxiliary hook includes a maintenance hook provided below the hanging center. It has more.

According to a sixth aspect of the present invention, there is provided the auxiliary hook shifting device for a ladle crane according to the sixth aspect, wherein the auxiliary hook includes a maintenance hook provided below the suspension center. It has more.

The crane of the present invention comprises a main winding device for lifting a first hanging portion of a conveyed object, and a second suspender different from the first hanging portion of the conveyed object lifted by the main winding device. A crane provided with a hoisting device capable of lifting a hand portion, wherein the hoisting device includes a hoisting hook for hooking the carried object on the second hoisting portion, and a hoisting hook. A hoisting material to be lifted, and the auxiliary hook is configured such that when the conveyed object in a state of being hoisted by the main winding device is hoisted by the auxiliary hoisting device, the second hoist portion of the conveyed object is provided. Between the first position hooked on the first position and the second position after the conveyed object hooked at the first position is wound up, as a winding conveyance path, and the auxiliary winding The hook is attached to the second hanging part of the conveyed object at the first position. When being hooked, the second position is set as an initial position before being hooked on the conveyed object, and is conveyed from the second position to the first position as a hooking conveyance path, and the auxiliary hook The transported object in a state where at least one of the auxiliary hook and the hoisting material that moves along the hooking transport path when being hooked on the transported object is lifted by the main winding device. The shape is set so as to suppress interference.

The ladle crane of the present invention comprises a main winding device for lifting a ladle containing molten metal, and a part of the ladle lifted by the main winding device is lifted to tilt the ladle so that the ladle is tilted. A ladle crane provided with an auxiliary winding device for discharging the molten metal from a pan, wherein the main winding device and the auxiliary winding device are provided on the same trolley, and the auxiliary winding device is configured to suspend the molten metal. An auxiliary hoist hook hooked on a hand portion, and a hoisting material for lifting the auxiliary hoist hook, wherein the auxiliary hoist is configured to tilt the ladle and discharge the molten metal. Move between a first position of the ladle hooked on the hanging portion and a second position after lifting the hanging portion of the ladle, and move the auxiliary winding hook to the first position. At the time of being hooked on the hanging portion of the ladle, As an initial position before the hook is hooked, the hook is moved from the second position toward the first position, and the hook is pulled by the hanging portion of the ladle. When hung, at least one of the auxiliary hook and the hoisting material that moves along the movement path from the second position to the first position is in the ladle in a state where it is lifted by the main winding device. The shape is such that interference is suppressed.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to the accompanying drawings, a hoist hook shift device for a ladle crane according to the present invention will be described below.

FIG. 1 is a side view showing an auxiliary hook shift device for a ladle crane of the present invention according to a first embodiment of the present invention. 8 and 9 in the present embodiment.
The same reference numerals are given to the same components as those of the device shown in (1), and the detailed description thereof will be omitted.

In this embodiment, in a ladle crane, the main winding device and the auxiliary winding device are installed on the same trolley,
After shifting the position of the auxiliary hook (transverse movement) and hooking the auxiliary hook on the tilting metal part (hanging part) of the ladle (conveyed object) suspended by the main winding hook, the auxiliary winding is performed. Supplementary hook shift device that raises the hook to tilt the ladle (for example, the device shown in FIGS. 9A, 9B, and 9C).
It is related to the improvement of.

FIG. 1 is a front view showing an auxiliary hook (sling hook) applied to the auxiliary hook shift device of the present embodiment. FIG. 2 is a side view of the auxiliary hook. 1 and 2, reference numeral 51 indicates an auxiliary winding hook. The auxiliary hook 51 includes a hook body 52, a hook 53 provided at one end of the hook body 52, and a counter weight 54 provided at the other end of the hook body 52. Hook 53 and counterweight 54
Are formed separately from the hook body 52.

As shown in FIG. 1, the hook main body 52 is formed in an upside-down V-shaped bifurcated shape which is substantially symmetrical when viewed from the front. The hook main body 52 has an upper left-right center portion 52a fitted to the rotating shaft 22 of the sheave 23 around which the wire (hanging material) 6 is wound. The hook body 52 has substantially the same weight in the left and right directions as viewed from the front centering on the center portion 52a. When the hook body 52 is lifted by the wire 6 via the sheave 23, the left and right weights are balanced. When the auxiliary hook 51 is lifted by the wire 6, an intermediate line between the wire 6 on the left side of the sheave 23 and the wire 6 on the right side when viewed from the front is formed in the extending direction of the wire 6. The lifting center line C of the auxiliary winding hook 51.

The forked portions (bifurcated portions) 52b, 52b of the hook body 52 are respectively connected to the hook body 52.
Are gradually separated from the lifting center line C as they move downward. At the lower portions of the forked portions 52b, 52b, mounting portions 55, 56 for mounting the hook portions 53 or the counterweights 54 are provided, respectively. Each of the mounting portions 55 and 56 is provided with two bolt holes 55a and 56a provided at a predetermined distance in the vertical direction.
have. As shown in FIG.
5 (56) is provided with a gap 55b (56b). The thickness direction of the hook 53 or the counterweight 54 can be inserted into and removed from these gaps 55b and 56b. The size of the gap between the gaps 55b and 56b is the same as each other.

As shown in FIG. 1 and FIG.
Is formed in a plate shape having a substantially uniform thickness. As shown in FIG. 1, the hook portion 53 is provided with a bent portion 53 a on the tip end side. The bent portion 53a has a portion formed in a substantially semicircular shape that is recessed downward when viewed from the front, and the tilting metal piece 8b of the ladle 8 is hooked. At the base end side (the side inserted into the gap 55b) of the hooking portion 53, the bolt hole 5 penetrates in the thickness direction.
A through-hole 53b through which a bolt inserted into 5a can be inserted is provided.

Then, the hook portion 53 is tightened with a nut by inserting a bolt through the bolt hole 55a and the through hole 53b with the base end side inserted into the gap portion 55b of the mounting portion 55. Thus, it can be attached to the attachment portion 55. Here, reference numeral 5 shown in FIG.
Reference numeral 7 denotes each side of the base end of the hook 53 and the gap 55b.
2 shows a seat plate interposed so as to be interposed between the seat plate and the seat plate.
The hook portion 53 is disposed on an extension of the forked portion 52b on the attachment portion 55 side in the front view forming direction in a state where the hook portion 53 is attached to the attachment portion 55, and, like the forked portion 52b, is hung downward. It is arranged so as to be gradually separated from the upper center line C. As a result, the bent portion 53a of the hook portion 53 is formed at the position of the auxiliary winding hook 51 that is farthest from the lifting center line C (see FIG. 1).

As described above, the bent portion 5 of the hook 53
3a is formed at a position protruding outward from the lifting center line C and spaced apart therefrom. From this, the auxiliary hook 51 is used to hook the hook 53 (bent 53a) on the tilting metal piece 8b.
Is brought close to the ladle 8, the hooking portion 53 is arranged in the immediate vicinity of the tilting metal piece 8b even if the wire 6 (the lifting center line C) for lifting the auxiliary hook 51 is not so close to the ladle 8. be able to. Therefore, the hook 53 can be hooked on the tilting metal piece 8b without causing the wire 6 to interfere with the accessory 8c of the ladle 8, as in the conventional example.

In this case, the hook portion 53 is not one type, but a plurality of types with different amounts of protrusion from the lifting center line C are prepared, and are provided in the size of the ladle 8 and the ladle 8. You may make it correspond to presence / absence and size of the accessory 8c.

In the auxiliary hook 51, a load is applied to a position distant from the lifting center line C by the amount of the hook portion 53 protruding outward from the lifting center line C, and the weight of the auxiliary hook 51 is balanced. It becomes difficult. As described above, if it is difficult to balance the weight of the auxiliary winding hook 51, the hook 53 cannot be properly positioned with respect to the tilting metal piece 8b of the ladle 8, and the hooking section 53 with respect to the tilting metal piece 8b. It is conceivable that the workability of the engagement work is deteriorated.

Therefore, a counter weight 54 is provided on the auxiliary winding hook 51 of the present embodiment. The counterweight 54 is for balancing the weight of the auxiliary hook 51 when the auxiliary hook 51 with the hook portion 53 attached to the attachment portion 55 is lifted by the wire 6. The counterweight 54 is attached to an attachment portion 56 that is located symmetrically with respect to the hooking portion 53 from the lifting center line C. The base end of the counterweight 54 has a hook 5
3 has a thickness dimension similar to that of the base end portion, and penetrates in the thickness direction like the base end portion of the hook portion 53, and
There is provided a through hole 54a through which a bolt inserted through a can be inserted.

The weight of the counterweight 54 is set to be substantially the same as the weight of the hook 53 so that the weight of the auxiliary hook 51 is balanced when the auxiliary hook 51 is lifted by the wire 6. The weight of the counterweight 54 may be appropriately changed in place of the above value to tilt the auxiliary hook 51 from the lifting center line C by a predetermined angle, whereby the shape of the tilted metal piece 8b and the accessory 8
You may make it respond | correspond to magnitude | sizes, such as c. Thus, by providing the counter weight 54, the weight of the auxiliary hook 51 can be freely balanced.

Next, the operation of this embodiment will be described with reference to FIG. When molten steel (Fe) is stored and the molten metal 8 suspended by the main winding hook 5 via the wire 4 of the main winding device is brought to the pouring position, the molten metal 8b of the molten metal 8 On the other hand, the hooking hook 51 is hooked. Here, first, the configuration shown in FIG. 3 will be described. A mounting base 15 is provided below the trolley 12 so as to be rotatable about a fulcrum 18. An upper sheave 14 is attached to a lower portion of the attachment base 15. The cylinder 1 provided on the trolley 12 is provided on the right side of the mounting base 15 in a front view.
The distal end of the third piston rod is connected. The mounting base 15 swings about the fulcrum 18 due to the reciprocation of the piston rod. One end of the wire 6 is attached to the left side of the mounting base 15 when viewed from the front. Wire 6
Is wound around the upper sheave 14 and the lower sheave 23, and the other end of the wire 6 can be moved in and out by the auxiliary winding device 16. The auxiliary winding device 16 can adjust the height of the auxiliary winding hook 51 by taking out the other end of the wire 6 from the auxiliary winding device 16 and extending the entire length of the wire 6. Next, the hooking operation of the auxiliary hook 51 will be described. The work procedure of the hooking work is as follows. First,
The piston rod of the cylinder 13 is retracted, and
Is pivoted about the fulcrum 18 and pulled up. Then, the center O1 of the upper sheave 14 moves to O1 ', and in conjunction with this, the center O2 of the lower sheave 23 fitted to the auxiliary winding hook 51 shifts (transverses) to O2'.

The shift operation of the auxiliary hook 51 from O2 to O2 'is performed at a position above (or below) the height position of the ladle 8. And O of the auxiliary hook 51
After the shift operation from 2 to O2 ', the auxiliary winding device 16 is operated to lower (wind up) the wire 6, and the auxiliary hook 51 is adjusted to the height position of the tilting metal piece 8b of the melting pot 8. Thereafter, the piston rod of the cylinder 13 is gradually advanced to shift the auxiliary hook 51 from O2 'to O2. The auxiliary hook 51 returns to the position before the shift, whereby the hook portion 53 of the auxiliary hook 51 moves the tilting metal piece 8b.
Hooked to Thereafter, when the hoisting device 16 is operated to wind up the wire 6 and raise the height position of the hoisting hook 51, the ladle 8 tilts around the axis 8a, and the molten steel (F
e) is poured.

According to the auxiliary hook 51 of the present embodiment, the hook 53 engaging with the tilting metal piece 8b is formed to protrude outward from the lifting center line C, and the auxiliary hook 51 is shifted in advance. After that, it is made to hook on the tilting metal piece 8b, so that it is possible to cope with a wide range of melting pots 8 having different shapes and dimensions, such as when the melting pot 8 has a projection such as the accessory 8c. Further, since the auxiliary winding hook 51 is configured to maintain the left-right balance, there is an effect that the hooking work on the tilted metal piece 8b is facilitated and the time of the hooking work is shortened.

As shown in FIGS. 8 and 9, in the auxiliary winding hooks 7A and 7B of the conventional example, the hook portion does not protrude from the lifting center line, and is disposed immediately below the lifting center line (wire 6). Therefore, when trying to bring the hook portion closer to the tilting metal piece 8b, it was inevitable that the wire 6 would interfere with the accessory 8c or the like. On the other hand, according to the present embodiment, since the bent portion 53a of the hook portion 53 is formed at a position protruding outward from the lifting center line C and spaced apart therefrom, the auxiliary winding hook 51 is connected to the ladle. 8, the hook portion 53 can be arranged in the immediate vicinity of the tilting metal piece 8b without bringing the wire 6 (the lifting center line C) for lifting the auxiliary hook 51 so close to the ladle 8. Does not interfere with the accessory 8c.

Next, a second embodiment will be described with reference to FIG. In the present embodiment, unlike the first embodiment, the counterweight 54 is not attached to the attachment portion 56 of the auxiliary hook 51K. The same hook portion 53 </ b> K as the hook portion 53 attached to the attachment portion 55 is attached to the attachment portion 56. In other words, the auxiliary hook 51K of the second embodiment has a pair of hooks 5
3 and 53K are attached.
Are provided at symmetrical positions protruding outward from the lifting center line C by a predetermined distance. The operation of the auxiliary hook 51K and the procedure of the hooking work of the second embodiment are the same as those of the first embodiment.

Next, a third embodiment will be described with reference to FIG. Supplementary hook 51L of the third embodiment
Has a maintenance hook 59 in addition to the configuration of the first embodiment. The operation and effect of this auxiliary hook 51L are the same as those of the first embodiment.
In addition, as shown in FIG. 6, the auxiliary hook 51L is connected to the related equipment and materials via the slinging wire 26 using the maintenance hook 59 when the work of transporting and pouring the ladle 8 is not available. N can be engaged in transportation. Therefore, it is possible to improve the working efficiency and the operation rate of the crane.

As shown in FIG. 5, the maintenance hook 59 is attached via an attachment portion 58 on an extension of the lifting center line C of the auxiliary winding hook 51L. A wire 6A is suspended from the attachment portion 58 on an extension of the lifting center line C, and the wire 6A is
Nine hanging portions 59a are connected. The maintenance hook 59 is configured so as to be able to balance the weight around the hanging portion 59a. According to the third embodiment, the maintenance hook 59 having a constant weight and maintaining its own weight balance is provided immediately below the extension of the lifting center line C of the auxiliary winding hook 51L.
Compared to the auxiliary hook 51 of the first embodiment, the weight balance of the auxiliary hook 51L is improved.

Next, a fourth embodiment will be described with reference to FIG. Supplementary hook 51M of the fourth embodiment
Has a hook 59 for maintenance in addition to the auxiliary hook 51K of the second embodiment. The operation and effect of this embodiment are the same as those of the third embodiment.

[0043]

According to the hook for hooking of the present invention, there is provided a hook for hooking provided with a hook which is hooked on a hanging portion of a transported object, wherein the hook for hooking is lifted by the hook for hooking. Since it is provided at a position separated from a lifting center line formed in the extending direction of the lifting material when it is lifted by a material, the hook portion is hooked on a lifting portion of the transported object. When the sling hook is brought closer to the carried object, the lifting material (the lifting center line) for lifting the sling hook is not so close to the carried object,
The hook portion can be arranged immediately near the hanging portion. Therefore, unlike the conventional example, the hook portion can be hooked on the hanging portion without causing the lifting member to interfere with the attachments of the load.

According to the hook for hooking of the present invention, the hook for hooking is provided with a hook for hooking on the hanging portion of the conveyed material, and is hooked up by a hoisting material. A position where interference of the hoisting material with the carried object is suppressed when the hook is hooked on the hanging portion provided on the side of the carried object in a state of being lifted by the hoisting member. Therefore, the hook portion can be engaged with the hanging portion of the transported object without causing the lifting member to interfere with an accessory of the transported object.

According to the hook for slinging of the present invention, claim 1
In the hook for hooking described in the description, the hook for hooking includes a hook body and the hook portion provided on the hook body, and the hook body is separated from the hook body by substantially the same distance around the lifting center line. Position, and a pair of attachment portions for detachably attaching the hook portion is provided.By preparing a plurality of types of hook portions having different protrusion amounts from the lifting center line, The size of the object to be conveyed and the presence or absence of incidental materials provided on the object to be conveyed;
It is possible to cope with differences in various conditions such as size. In addition, since the pair of mounting portions is provided at a position substantially the same distance from each other about the lifting center line, the same hook portion is mounted on the pair of mounting portions to reduce the weight balance of the hook for hooking. Can be easily taken.

According to the hook for slinging of the present invention, claim 1
In the hook for sling described, in the hook for sling,
Since the counterweight for balancing the hook for hooking is provided when the hook for hooking is lifted by the hoisting material, the hooking portion is provided at a position separated from the center line for lifting. Minute, a load is applied to a place away from the lifting center line, and where it is difficult to balance the weight of the hook for hooking, it is possible to freely balance the weight of the hook for hooking with the counterweight, whereby In addition, it is possible to easily perform the positioning and engaging work of the hook portion with respect to the hanging portion of the transported object.

According to the auxiliary hoist shift device of the ladle crane of the present invention, the ladle suspended by the main hoist hook of the main hoist installed on the trolley is supplemented by the auxiliary hoist installed on the trolley. The present invention is applied to a ladle crane that winds up and tilts with a winding hook and discharges the molten metal stored in the ladle, shifts the position of the auxiliary hoist hook, and moves the auxiliary hoist hook to a hanging part of the ladle. An auxiliary hook shift device for a hooked ladle crane, comprising: the auxiliary hook; and a shift unit configured to shift a position of the auxiliary hook, wherein the auxiliary hook is located outside a hanging center of the auxiliary hook. A hook portion protruding toward the hook portion and a counterweight provided at a symmetrical position of the hook portion with the hanging center interposed therebetween, so that the position of the auxiliary hook is shifted in advance by the shift portion. Later, by hooking the hook portion to the hanging portion of the ladle, it is possible to cope with a wide range of the ladle having different shapes and dimensions such as when the ladle has a projection such as an accessory. Can be. Further, according to the present device, since the left and right weight balance of the auxiliary hook is configured to be maintained, the work of hooking the ladle on the hanging portion becomes easy, and the time of the hooking work is reduced. Can be shortened.

According to the auxiliary hook shift device for a ladle crane of the present invention, in the auxiliary hook shift device for a ladle crane according to the fifth aspect, the auxiliary hook is replaced with a structure having the counterweight. Since a pair of hook portions projecting outward from the hanging center of the auxiliary hook at respective symmetrical positions are provided, the auxiliary hook provided with the pair of hook portions naturally maintains the right and left weight balance. Therefore, there is no need to specially prepare a balance member such as a counterweight. In addition, for example, in order to change the amount of protrusion from the hanging center in accordance with the difference in the shape of the ladle and the like, when a different hook portion is attached to the auxiliary hook, It is sufficient to attach the same hook part as the above-mentioned different kind of hook part to the other side, and it is not necessary to select a suitable counterweight each time.

According to the auxiliary hook shifting device for a ladle crane of the present invention, in the auxiliary hook shifting device for a ladle crane according to claim 5, the auxiliary hook is a maintenance hook provided below the suspension center. For example, when the transportation and pouring work of the ladle is not available, it is possible to transport related equipment, materials, and the like to the maintenance hook portion via a slinging wire or the like. it can. Therefore, it is possible to improve the working efficiency and the operation rate of the crane. Also,
By providing the maintenance hook with a constant weight and having its own weight balance, the effect that the weight balance of the auxiliary hook is further improved can be obtained.

According to the auxiliary hook shift device for a ladle crane of the present invention, in the auxiliary hook shift device for a ladle crane according to claim 6, the auxiliary hook is a maintenance hook provided below the suspension center. For example, when the transportation and pouring work of the ladle is not available, it is possible to transport related equipment, materials, and the like to the maintenance hook portion via a slinging wire or the like. it can. Therefore, it is possible to improve the working efficiency and the operation rate of the crane. Also,
By providing the maintenance hook with a constant weight and having its own weight balance, the effect that the weight balance of the auxiliary hook is further improved can be obtained.

According to the crane of the present invention, the main hoisting device for lifting the first hoisting portion of the conveyed object and the first hoisting portion of the conveyed material hoisted by the main hoisting device are different from each other. A crane provided with a hoisting device capable of lifting a second hanging portion, wherein the hoisting device includes a hoisting hook for hooking the carried object on the second hoisting portion, and the hoisting device. A lifting member that lifts a hook, wherein the auxiliary hoisting hook is configured such that when the transported object in a state of being lifted by the main winding device is hoisted by the auxiliary winding device, the second hoisting of the transported object is performed. Between the first position hooked on the hand portion and the second position after the conveyed object hooked at the first position is wound up, while being transported as a winding transport path, The auxiliary hook is connected to the second suspension of the load at the first position. When hooked on the part, the second position is an initial position before being hooked on the conveyed object, is transported from the second position toward the first position as a hooking transport path, When the auxiliary hook is hooked on the transported object, at least one of the auxiliary hook and the lifting member that moves along the hooking transport path is in a state in which the auxiliary winding hook is lifted by the main winding device. Because the shape is such that interference with the conveyed object is suppressed, the auxiliary hook, between the first position and the second position as the hoisting conveyance path and the hooking conveyance path. The hooking operation can be performed without moving at least one of the auxiliary winding hook and the hoisting member by the forward and backward movement without interfering with the conveyed object in a state of being lifted by the main winding device. Accordingly, even when the transported object is provided with an accessory or the like, the auxiliary hoisting hook has a hooking operation at the time of hooking on the same moving path as the hoisting operation after the transported object is hooked. Is performed without any trouble. Therefore, according to the crane of the present invention, unlike the conventional example shown in FIG. It becomes possible to fix according to the positional relationship between the device and the auxiliary winding device. In other words, in the crane of the present invention, means for independently moving the auxiliary winding device (the auxiliary winding hook) without any restriction on the position of the main winding device (for example, the main winding device) There is no need to provide a means for moving the auxiliary hoist hook installed on a trolley different from the trolley on which is installed, and the equipment cost can be reduced.

According to the ladle crane of the present invention, the main winding device for lifting the ladle containing the molten metal, and a part of the ladle lifted by the main winding device are raised to tilt the ladle. A ladle crane provided with an auxiliary winding device for discharging the molten metal from the ladle, wherein the main winding device and the auxiliary winding device are provided on the same trolley, and the auxiliary winding device is And a hoisting material for lifting the auxiliary hook, and the auxiliary hoist is configured to tilt the ladle and discharge the molten metal. Moving between a first position of the ladle hooked on the hanging portion and a second position after the lifting portion of the ladle is lifted, and moving the auxiliary hook into the first position; When hooked on the hanging part of the ladle at the position, The position is an initial position before the hook is hooked, and the hook is moved from the second position toward the first position, and the hook is attached to the hanging portion of the ladle. When the hook is lifted by the main winding device, at least one of the auxiliary hook and the lifting member that moves along the movement path from the second position to the first position is lifted by the main winding device. Since the shape is such that interference with the pot is suppressed, the auxiliary hook is moved only between the first position and the second position, so that the auxiliary hook and the hoisting material Can be performed without interfering with at least one of the ladle suspended by the main winding device. Accordingly, even if the auxiliary hook is provided with an accessory or the like in the ladle, the hooking work at the time of hooking does not hinder the hooking work on the same movement path as the hoisting work after hooking on the ladle. Done without. Therefore, according to the ladle crane of the present invention, unlike the conventional example shown in FIG. 8, the installation position of the means for moving the auxiliary hook by the auxiliary device (in the example, a cylinder, a mounting table, a sheave, etc.). Can be fixed to the same trolley in which the main winding device is installed according to the positional relationship between the main winding device and the auxiliary winding device when the ladle is hoisted.
In other words, in the ladle crane according to the present invention, means for independently moving the auxiliary winding device (the auxiliary winding hook) without any restriction on the position of the main winding device, for example, the main winding device There is no need to provide a means for moving the auxiliary hook installed on a trolley different from the trolley on which the device is installed, and equipment costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a sling hook applied to a supplementary hook shift device of a ladle crane according to a first embodiment of the present invention.

FIG. 2 is a side view showing the sling hook shown in FIG. 1;

FIG. 3 is a front view showing a use state of the auxiliary hook shift device of the ladle crane according to the first embodiment.

FIG. 4 is a front view showing a sling hook applied to a supplementary hook shift device of a ladle crane according to a second embodiment of the present invention.

FIG. 5 is a front view showing a sling hook applied to a supplementary hook shift device of a ladle crane according to a third embodiment of the present invention.

FIG. 6 is a front view showing a use state of the auxiliary hook shift device of the ladle crane according to the third embodiment.

FIG. 7 is a front view showing a sling hook applied to a supplementary hook shift device of a ladle crane according to a fourth embodiment of the present invention.

FIG. 8 is a front view showing a use state of a conventional general ladle crane.

FIG. 9 is a front view showing a use state of another conventional ladle crane.

[Explanation of symbols]

 Reference Signs List 5 main winding hook 6 wire (lifting material) 8 ladle (conveyed object) 8a shaft (first hanging part) 8b tilting hardware (hanging part, second hanging part, part of ladle) 12 Trolley 13 Cylinder (shift part) 14 Sheave (shift part) 15 Mounting stand (shift part) 16 Auxiliary winding device 19 Main winding device 51 Auxiliary winding hook (hooking hook) 52 Hook body 53 Hooking part (hook part) 53K Hook part 54 Counterweight 55 Mounting part 56 Mounting part 59 Hook for maintenance C Lifting center line (Changing center) Fe Molten steel (Molten metal)

Claims (10)

[Claims] 1. A sling hook having a hook portion hooked on a hanging portion of an object to be transported, wherein the hook portion lifts the hook when the sling hook is lifted by a lifting material. A sling hook provided at a position separated from a lifting center line formed in the extending direction of the material. 2. A hook for hooking which is hung by a hoisting material, the hook having a hooking portion hooked on a hanging portion of a conveyed load, wherein the hooking hook is hung by the hoisting material. A hook for sling provided at a position where interference of the hoisting material with the carried object is suppressed when the hanging member is hooked on the hanging portion provided on a side portion of the carried object in the extended state. . 3. The hook for slinging according to claim 1,
The hook for hooking includes a hook main body and the hook portion provided on the hook main body, and the hook main body is provided at a position separated by substantially the same distance from each other about the lifting center line, A hook for a sling provided with a pair of mounting portions for detachably mounting the portions. 4. The hook for hooking according to claim 1, wherein the hook for hooking has a counterweight for balancing the hook for hooking when the hook for hooking is lifted by the lifting material. Sling hook provided. 5. A ladle suspended by a main winding hook of a main winding device installed on a trolley is rolled up and tilted by an auxiliary winding hook of a winding device installed on the trolley, and Applied to a ladle crane that discharges the stored molten metal,
An auxiliary hook shift device for a ladle crane that shifts the position of the auxiliary hook and hooks the auxiliary hook on a hanging portion of the ladle, wherein the auxiliary hook and the position of the auxiliary hook are A shift portion for shifting, wherein the auxiliary hook is a hook portion protruding outward from a suspension center of the auxiliary hook, and a counter provided at a symmetrical position of the hook portion across the suspension center. An auxiliary hook shift device for a ladle crane having a weight. 6. The auxiliary hook shift device for a ladle crane according to claim 5, wherein the auxiliary hook is symmetrical outward from a suspension center of the auxiliary hook, instead of being provided with the counterweight. An auxiliary hook shift device for a ladle crane having a pair of hook portions protruding at positions. 7. The auxiliary hook shift device for a ladle crane according to claim 5, wherein the auxiliary hook further includes a maintenance hook portion provided below the suspension center. apparatus. 8. The auxiliary hook shift device for a cradle according to claim 6, wherein the auxiliary hook further includes a maintenance hook portion provided below the suspension center. apparatus. 9. A main winding device for lifting a first lifting portion of a transported object, and a second lifting portion different from the first lifting portion of the transported item lifted by the main winding device. A crane provided with a possible hoisting device, wherein the hoisting device includes a hoisting hook for hooking the transported object on the second hanging portion, and a hoisting material for lifting the hoisting hook. Wherein the auxiliary hook is hooked on the second hook portion of the transported object when the transported object in a state of being lifted by the main winding device is hoisted by the auxiliary winding device. Between the one position and the second position after the conveyed object hooked at the first position is wound up, while being conveyed as a hoisting conveyance path, the auxiliary winding hook, When the transported object is hooked on the second hanging portion at the first position. In this case, the second position is an initial position before being hooked on the conveyed object,
The auxiliary winding is transported from the second position to the first position as a hooking transport path, and the auxiliary hook moves along the hooking transport path when the auxiliary hook is hooked on the transported object. A crane having a shape in which at least one of a hook and the lifting member is prevented from interfering with the conveyed object being lifted by the main winding device. 10. A main winding device for lifting a ladle containing a molten metal, and a part of the ladle lifted by the main winding device is lifted to incline the ladle to remove the molten metal from the ladle. A ladle crane provided with an auxiliary hoisting device for discharging, wherein the main winding device and the auxiliary hoisting device are provided on the same trolley, and the hoisting device is hooked on a hanging part of the ladle. An auxiliary hook, and a hoisting material for lifting the auxiliary hook, wherein the auxiliary winding device tilts the ladle and discharges the molten metal. Move between the first position to be hooked on the hand portion and the second position after lifting the hanging hand portion of the ladle, and the auxiliary hook of the ladle at the first position. When hooking the hook, the auxiliary hook hooks the second position. Moving the auxiliary hook from the second position toward the first position as an initial position before the auxiliary hook is hooked on the hanging portion of the ladle; At least one of the auxiliary hook and the lifting material that moves along the movement path from the two positions to the first position is prevented from interfering with the ladle in a state of being lifted by the main winding device. A ladle crane that is shaped.