JP7329920B2 - Lifting gear for slinging and conveyor for long objects - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sling hanger and a long object conveying apparatus equipped with this sling hanger.

2. Description of the Related Art In a factory or the like, a long object, for example, a plurality of steel materials cut to an appropriate length and bundled with a wire called a cord is sometimes transported by a transportation device such as a crane.
2. Description of the Related Art When conveying a plurality of steel materials using a conveying device, a slinging operation is performed in which the steel materials are loaded onto or unloaded from a linear slinging hoisting tool.
In order to improve the efficiency of slinging work, automation of conveying devices is required.

As a conveying device, a pair of support frames are suspended from a long beam so as to be able to travel. , and slings provided at the lower ends of the suspension arms (Patent Document 1).
In the conventional example of Patent Document 1, the sling is composed of a belt, a chain, or the like, in order to collectively support a plurality of long objects such as steel bars.

JP-A-2004-35194

In the conventional example of Patent Document 1, since the sling is formed from a linear member such as a belt or a chain, it is difficult to load a heavy long object on the linear member and unload it from the sling. In some cases, the linear member rubs against the elongated object and cannot be smoothly moved to a predetermined position. In this case, since an operator intervenes to move the linear member to a predetermined position, there is a problem that the slinging work cannot be performed efficiently.

For example, when slinging a plurality of long objects bundled with a wire, the slinging work cannot be efficiently performed in many cases. In order to bind a bundle of long objects with a wire, the center part of the wire is laid along the outer circumference of the bundle of long objects and then both ends are twisted. protrude against. If both ends of the wire are oriented downward, the linear member is likely to be caught by both ends of the wire during slinging work, and the slinging work cannot be performed efficiently.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sling hanger and a long object conveying device which are less likely to be caught by a long object during sling work.

A slinging sling according to the present invention comprises a linear member that supports a long object, and a rotatable member provided on the outer periphery of the linear member to guide the long object in a direction that intersects with the linear member. and a guide member.

In the present invention, in order to hang a heavy long object, the sling sling is positioned outside along the axial direction from the edge of the long object, and then positioned toward the center of the long object. move toward a predetermined location. Further, in order to unload the long object, the sling sling is moved outward along the axial direction from a predetermined position on the long object.
Here, even if the slinging hanger is caught on the elongated object, the guide member rotates with respect to the linear member, so that the slinging hanger is guided to a predetermined position on the elongated object.
For example, when slinging a plurality of long objects bundled with a wire, even if both ends of the wire are facing downward, the guide member will move along with the linear member as the sling attachment moves. Since the slinging device rotates against the wire, the slinging device passes under both ends of the wire, and the slinging device is smoothly guided to the long object.
Therefore, in the present invention, since the guide member is rotatably provided on the linear member that supports the elongated object, the slinging hanger is less likely to get caught on the elongated object during slinging work, and the slinging tool is not easily caught on the elongated object. will be smoothly guided to.

In the present invention, the guide member preferably has a coil-shaped elastic member.
In this configuration, the coil-shaped elastic member is elastically deformed, and the elastic deformation conforms to the outer shape of the elongated object, so that the guide member can be guided more smoothly with respect to the elongated object. Furthermore, the coil-shaped elastic member is elastically deformed along the outer peripheral shape of the elongated object, so that the weight of the elongated object is not concentrated on a specific portion. Therefore, the coil-shaped elastic member is not crushed, and the durability of the guide member can be improved.

In the present invention, it is preferable that the coil-shaped elastic member is a tension spring.
With this configuration, the helical portion of the tension spring is in close contact with the tension spring when it is not subjected to force, so it is possible to smoothly guide a long object. In other words, if there is a gap in the helical portion of the spring, the protrusion on the outer periphery of the elongated object may get caught in the gap and may not be guided smoothly. For example, when hoisting a plurality of long objects bound by a wire, the ends of the wire may get caught in the gaps of the spiral portion, preventing the slinging sling from being smoothly guided. In the tension spring, since the helical portion is in close contact, projections and both end portions do not enter the gaps, and the sling hook can be guided to the long object.

The long object conveying apparatus of the present invention comprises a sling hanger configured as described above, a first suspension arm having a lower end connected to one end of the linear member, and a lower end connected to the other end of the linear member. a second suspension arm to which is connected, a support member in which the upper end side of the first suspension arm and the upper end side of the second suspension arm are respectively rotatably supported, and the support member extends in the longitudinal direction and a beam member that is movably provided in the body.

In the present invention, in order to hang a long object, the support member is moved with respect to the beam member, the first suspension arm and the second suspension arm are rotated, and the sling sling is attached to the long object. to a predetermined location below the
After the beam member is moved to a predetermined position while the long object is suspended from the sling hook, the long object is unloaded. For unloading, after the central portion of the long object is lowered to a predetermined location, the support member is moved, or the first suspension arm and the second suspension arm are rotated with respect to the support member. Remove the sling sling from the long object.
Even if the slinging hanger is caught by a long object in the work of loading and unloading, the guide member rotates with respect to the linear member as described above, so that the slinging work can be performed smoothly.
Therefore, in the present invention, since the above-described configuration is adopted as the slinging hanger, it is possible to provide a long object conveying apparatus capable of automating the slinging work.

1 is a front view of a long object conveying apparatus according to a first embodiment of the present invention; FIG. The side view of a long object conveying apparatus. The perspective view which shows the principal part of the hanging tool for slinging concerning 1st Embodiment. The front view which shows the principal part of the hanging tool for slinging. The front view which shows the sling hook concerning 2nd Embodiment of this invention.

An embodiment of the present invention will be described based on the drawings.
[First embodiment]
A first embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.
(Summary of Long Object Conveying Device)
1 and 2 show the overall configuration of the long object conveying apparatus according to the first embodiment.
1 and 2, the long object conveying apparatus includes a beam member 1, a pair of support members 2, a pair of arms 3, a sling hook 4, a support member moving mechanism 5, and a rotating mechanism 6. , and an opening/closing mechanism 7 .
A beam moving mechanism (not shown) for moving the beam member 1 in the longitudinal direction and the vertical direction is provided on the upper portion of the beam member 1 .
Rails 11 for guiding the support member 2 are provided on both side surfaces of the beam member 1 along the longitudinal direction of the beam member 1 .

Each of the pair of support members 2 has a case 20 and a wheel 21 that is rotatably provided on the case 20 and rolls on the rail 11 .
The case 20 has a first case portion 22 arranged below the beam member 1 and second case portions 23 provided on both left and right sides of the first case portion 22 .
The second case portion 23 is a plate-like member that rotatably supports the wheel 21 .

The pair of arms 3 includes a first suspension arm 31 whose upper end is rotatably supported by one of the left and right second case portions 23 , and an upper end of which is supported by the other second case portion 23 . and a second suspension arm 32 on which the second suspension arm 32 is rotatably supported.
The first suspending arm 31 and the second suspending arm 32 each have a base end portion 30A arranged on the second case portion 23 side and a tip end portion 30B arranged on the slinging hanger 4 side. The distal end portion 30B is provided rotatably with respect to the proximal end portion 30A.
A connecting link 33 is provided between the base end portion 30A of the first suspension arm 31 and the base end portion 30A of the second suspension arm 32 .
The connecting link 33 is provided with a mechanism (not shown) that allows opening and closing operations of the first suspension arm 31 and the second suspension arm 32 .

The support member moving mechanism 5 includes a drive source 50 such as a motor, and an interlocking mechanism connected to the drive source 50 to move the support member 2, the arm 3, and the sling hanger 4 along the longitudinal direction of the beam member 1 (Fig. not shown).
The rotating mechanism 6 has a cylinder 61 provided between the first case portion 22 and the connecting link 33, and a cylinder driving portion (not shown) that drives the cylinder 61, and the cylinder 61 is driven to move forward and backward. As a result, the arm 3 rotates within the vertical plane.
The opening/closing mechanism 7 has a cylinder 71 fixed to the connecting link 33 and an opening/closing link mechanism 72 connected to the cylinder 71 and the arm 3 . They open and close each other (see FIG. 2).

(Structure of sling hook 4)
The sling hanger 4 hangs the steel material S as a long object. One end of the slinging hanger 4 is connected to the lower end of the first suspending arm 31 , and the other end of the slinging hanger 4 is connected to the lower end of the second suspending arm 32 .
A plurality of steel materials S are bundled into one bundle, and this bundle is bundled with a wire W called wire. The wire W is bound by twisting both end portions after being crawled along the outer circumference of the bundle, and the twisted end portions WO protrude from the peripheral surface of the steel material S.例文帳に追加

A specific configuration of the sling sling 4 is shown in FIGS. 3 and 4. FIG.
3 and 4, the slinging hanger 4 includes a wire 41 as a linear member for supporting the steel material S, and a coil-shaped elastic member as a guide member rotatably provided on the outer periphery of the wire 41. 42. The coil-shaped elastic member 42 guides the steel material S in a direction intersecting with the wire 41 . The wire 41 and the coiled elastic member 42 are each made of metal.
The diameter of wire 41 is a suitable dimension, for example 16 mm.

The coiled elastic member 42 is a tension spring, and the helical portion of the tension spring is in close contact when no force is applied.
The outer diameter of the coil-shaped elastic member 42 is an appropriate size, for example, 40 mm, and the thickness (diameter) of the spring itself is, for example, 5 mm. A predetermined gap is formed between the inner circumference of the coil-shaped elastic member 42 and the outer circumference of the wire 41 .
The wire 41 has a region A capable of supporting the steel material S and blank regions B on both sides of the region A. As shown in FIG. The length of region A is equal to the length of coiled elastic member 42 .
The length of the margin area B is appropriately set, and may be 0, for example. That is, in the present embodiment, the length of the region A capable of supporting the steel material S and the length of the coiled elastic member 42 may be equal.

[Slinging work]
Next, a slinging operation using the long object conveying apparatus of this embodiment will be described.
First, a plurality of steel materials S are made into one bundle, and a wire W is used to bind a predetermined length from both ends of one bundle of steel materials S to the center thereof. Then, a plurality of bundles of the steel materials S bound by the wire W are placed on a pallet (not shown).
Next, for loading, the long object conveying device is placed directly above the steel material S on which the multiple bundles are placed, and the opening and closing mechanism 7 is operated to move the first suspension arm 31 and the second suspension arm. 32 are opened to keep the slinging hanger 4 in a stretched state. Further, at least one of the support member moving mechanism 5 and the rotating mechanism 6 is operated in advance so that the sling hook 4 is located outside the end of the steel material S in the axial direction.

In this state, the supporting member moving mechanism 5 and the rotating mechanism 6 are operated to move the slinging hanger 4 to a predetermined position on the steel material S, thereby carrying out the loading. Here, even if the steel material S is caught on the slinging sling 4, the coil-shaped elastic member 42 is elastically deformed in both the radial direction and the axial direction along the outer shape of the bundled steel materials S. while rotating around the wire 41 .
Even if both ends WO of the wire W face downward, the coiled elastic member 42 rotates with respect to the wire 41 as the slinging hanger 4 moves. (See FIGS. 3 and 4), and the coiled elastic member 42 is smoothly guided to a predetermined position of the steel material S. As shown in FIG.

After that, when the beam member 1 of the long object conveying device is raised, the steel material S is suspended by the slinging hanger 4 . A plurality of bundles of steel materials S are transported to a predetermined position while being suspended by a slinging hanger 4 .
At a predetermined position, the center portions of the bundles of steel materials S are placed on a pallet or the like (not shown) and unloaded. The lowering of the beam member 1 and the operation of the opening/closing mechanism 7 loosen the slinging hanger 4 . Then, the support member moving mechanism 5 and the rotating mechanism 6 are operated to remove the slinging hanger 4 from the steel material S.
When removing the slinging hanger 4 from the steel material S, even if the slinging hanger 4 is caught on the steel material S, the coiled elastic member 42 rotates around the wire 41 as described above. 4 is smoothly removed from the steel material S.

[Effects of Embodiment]
(1) A wire 41 as a linear member that supports the steel material S, and a coil-shaped elastic member that is rotatably provided on the outer periphery of the wire 41 and serves as a guide member that guides the steel material S in a direction intersecting the wire 41. 42, and the sling hook 4 is configured. Therefore, during the slinging work, the slinging hanger 4 is less likely to get caught on the steel material S, and is smoothly guided to a predetermined position.

(2) Since the coil-shaped elastic member 42 is elastically deformed along the outer peripheral shape of the steel material S, the weight of the steel material S applied to the coil-shaped elastic member 42 is evenly distributed without being concentrated at a specific point. Therefore, the coil-shaped elastic member 42 is not crushed, and high durability can be obtained.

(3) Since the coil-shaped elastic member 42 is a tension spring, the helical portion of the spring is in close contact when no force is applied. Therefore, when a bundle of steel materials S is guided by a plurality of bundled wires W, there is little possibility that both end parts WO of the wires W are caught in the gaps of the spiral parts and the sling hook 4 cannot be smoothly guided.

(4) Since the length of the region A of the wire 41 capable of supporting the steel material S is equal to the length of the coil-shaped elastic member 42, the steel material S remains coiled regardless of the position of the steel material S on the wire 41. is reliably supported by the elastic member 42 of the .

(5) The sling sling sling 4, the first suspension arm 31 and the second suspension arm 32 whose upper ends are connected to both ends of the wire 41, and the upper ends of the first suspension arm 31 and the second suspension arm 32 Since the long object conveying apparatus is configured by including the support member 2 rotatably supported on each side and the beam member 1 on which the support member 2 is movably provided in the longitudinal direction, the beam member 1 After moving the support member 2 with respect to the steel material S, the slinging work is performed by rotating the first suspension arm 31 and the second suspension arm 32 to move the slinging tool 4 to a predetermined position below the steel material S. can be provided.

[Second embodiment]
A second embodiment of the present invention will be described with reference to FIG.
The second embodiment differs from the first embodiment in the configuration of the guide member, and the rest of the configuration is the same as the first embodiment. In the description of the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In FIG. 5, the sling sling 40 of the second embodiment has a wire 41 for supporting the steel material S, and a cylinder 45 as a guide member rotatably provided around the wire 41 .
One end of the wire 41 is connected to the lower end of the first suspension arm 31 and the other end of the wire 41 is connected to the lower end of the second suspension arm 32 . Other configurations of the long object conveying apparatus of the second embodiment are the same as those of the first embodiment.
The cylindrical body 45 is a member made of steel that guides the steel material S in a direction intersecting with the wire 41, and a plurality of cylindrical bodies 45 are arranged side by side along the area A capable of supporting the steel material S.
A predetermined gap is formed between the inner circumference of the cylindrical body 45 and the outer circumference of the wire 41 .

In the second embodiment, in order to load the steel material S, the slinging hanger 40 is positioned outside the steel material S and then moved toward a predetermined location on the steel material S in the same manner as in the first embodiment. . In order to unload the steel material S, the sling hook 40 is moved outward from a predetermined position on the steel material S and removed.
In these slinging operations, even if the slinging hanger 40 is caught on the steel material S, the cylindrical body 45 rotates with respect to the wire 41, so that the slinging hanger 40 can be guided to a predetermined position on the steel material S. Become.

In addition to the effects (1), (4), and (5) of the first embodiment, the second embodiment can also achieve the following effects.
(6) Since the guide member is the cylinder 45, the structure of the guide member itself can be simplified.

[Modification]
It should be noted that the present invention is not limited to the above-described embodiments, and includes modifications, improvements, etc. within the scope of achieving the object of the present invention.
For example, in each of the above embodiments, the first suspension arm 31 and the second suspension arm 32 whose upper ends are connected to both ends of the wire 41, and the upper end side of the first suspension arm 31 and the second suspension arm 32 , and the beam member 1 on which the support member 2 is movably provided in the longitudinal direction. The configuration of the transport apparatus for large objects is not limited to the above-described embodiment. may be

Moreover, the linear member is not limited to the wire 41, and may be a belt, a chain, or the like.
Furthermore, the long object is not limited to the steel material S, and any object that is relatively heavy and elongated can be hung by the sling hooks 4 and 40 of the present invention.
Even if the long object is steel material S, it can be applied to a case where a plurality of objects are hung without bundling them with a wire W. For example, when slinging a steel material S having unevenness on its peripheral surface, the coiled elastic member 42 and the cylindrical body 45 are guided to a predetermined position without being caught by the unevenness of the steel material S.

Further, in the first embodiment, a tension spring is used as the coiled elastic member 42, but a compression spring having a gap in the helical portion in a state where no force is applied may be used.
Furthermore, when a spring is used as the coil-shaped elastic member 42, it is not limited to a single spring, and may be composed of a plurality of springs arranged side by side along the linear member.

DESCRIPTION OF SYMBOLS 1... Beam member 11... Rail 2... Support member 20... Case 21... Wheel 31... First suspension arm 32... Second suspension arm 4, 40... Sling hook, 41... Wire (Linear member), 42... Coil-shaped elastic member (guide member), 45... Cylindrical body (guide member), 5... Support member moving mechanism, 6... Rotating mechanism, 7... Open/close mechanism, S... Steel material (long length)

Claims (3)

a linear member that supports a plurality of elongated objects bound by wires ;
and a plurality of tension springs made of metal, which are rotatably provided on the outer periphery of the linear member and guide the plurality of elongated objects in a direction intersecting with the linear member. A hanging tool for slinging. In the sling sling according to claim 1,
A sling hanger , wherein the plurality of tension springs are three or more tension springs. A sling hanger according to claim 1 or claim 2 , a first suspension arm having a lower end connected to one end of the linear member, and a lower end connected to the other end of the linear member. a second suspension arm, a support member rotatably supporting the upper end side of the first suspension arm and the upper end side of the second suspension arm, respectively, and the support member being movable in the longitudinal direction. and a beam member provided in the long object conveying apparatus.

Images