KR101633976B1 - Magnetic lifter of crane - Google Patents

Abstract

Disclosure of the Invention The present invention relates to a magnetic attraction transfer device for a crane. A magnetic attraction and conveyance device for a crane of the present invention comprises: a crane main body portion for moving a material; a magnetic attraction portion provided at a lower portion of the crane main portion for attracting a material by a magnetic force; And a mobile connection unit for connecting the mobile unit to the mobile unit.

Description

[0001] MAGNETIC LIFTER OF CRANE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a magnetic attraction and transfer device for a crane, and more particularly, to a magnetic attraction and transfer device for a crane for transferring materials of various shapes using magnetic force.

Typical steelmaking consists of a steelmaking process to produce molten iron, a steelmaking process to remove impurities from molten iron, a casting process to transform solid iron into solid, and a rolling process to make iron into steel or wire. The steel sheet subjected to the rolling process is cut to a shape and length required by the consumer by a cutting machine. The crane is a device that lifts the material that has undergone the rolling process or the rolling process, moves it to a desired position and then puts it down repeatedly.

A related prior art is Korean Utility Model Publication No. 20-2010-0011556 (published on November 29, 2010, entitled " Magnet crane cable connection structure ").

An object of the present invention is to provide a magnetic attraction and conveyance device for a crane capable of stably conveying a plate-like material having a bent shape without a separate auxiliary device.

A magnetic attraction / transfer device for a crane according to the present invention comprises: a crane main body portion for moving a workpiece; A magnetic attraction unit installed at a lower portion of the crane main body and adapted to attract the workpiece by a magnetic force; And a moving connection part for connecting the magnetic attraction part to the crane body part so as to be movable and rotatable.

The magnetic attraction unit may include: a head connected to the movable connection; And a suction main body connected to a lower portion of the head portion and having a magnetic force generating device for generating a magnetic force to attract the workpiece.

The moving connection unit may include a moving body that is installed on the crane main body so as to be linearly movable; And a rotating body rotatably installed on the moving body and connected to the magnetic attraction part.

The moving connection unit may include: a rail installed on the crane main body; A wheel installed on the moving body and moved along the rail; A reciprocating drive device for rotating the wheel to move the moving body; And a rotation driving device installed on the moving body for rotating the rotating body.

Further, the moving body may include: an installation portion in which the reciprocating drive device and the rotation drive device are installed; A wheel coupling portion formed at an edge portion of the mounting portion and axially coupled to the wheel; And a rotary coupling portion formed at a lower portion of the installation portion and rotatably coupled to the rotary body.

According to another aspect of the present invention, And a control unit for operating the moving connection unit according to the shape of the workpiece detected by the workpiece sensing unit to change the direction of the magnetic attraction unit to be parallel to the valley of the workpiece.

According to the magnetic attraction and transfer device for a crane in accordance with the present invention, the magnetic attraction portion that is in contact with the work can be linearly moved and rotated by the moving connection portion, so that the magnetic attraction The contact surface with the material having various shapes can be stably secured while moving and rotating the attracting portion.

Further, according to the present invention, a plate-like material deformed into a bent shape due to a defective shape can be transferred using only a crane without using a separate auxiliary device.

Therefore, according to the present invention, it is possible to reduce the time and effort required for binding the material to the crane by using a separate auxiliary device, and when the material is fixed to the magnetic attraction or the like by using the auxiliary device, It is possible to prevent a dropping accident that may occur due to a shift or the like.

In addition, according to the present invention, it is not necessary to additionally provide a crane in a separate device occupying a copper line with the volume in order to enhance the bonding force with the material, so that the space of the fixed space for storing the material can be effectively utilized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view schematically showing a magnetic attraction and transfer device for a crane according to an embodiment of the present invention; FIG.
FIG. 2 is a cross-sectional view showing a main portion of a crane according to an embodiment of the present invention.
FIG. 3 is a perspective exploded perspective view schematically showing a magnetic attraction and transfer device for a crane according to an embodiment of the present invention.
FIG. 4 is a schematic view illustrating an example of using a magnetic attraction and transfer device of a crane according to an embodiment of the present invention.
FIG. 5 is a state diagram illustrating a schematic structure of another example of using a magnetic attraction transfer apparatus of a crane according to an embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a magnetic attraction and transfer device for a crane according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view schematically showing a magnetic attraction and transfer device for a crane according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part schematically showing a magnetic attraction and transfer device for a crane according to an embodiment of the present invention And FIG. 3 is an exploded perspective view schematically showing a magnetic attraction and transfer device for a crane according to an embodiment of the present invention.

1 to 3, a crane magnetic attraction transfer apparatus 300 according to an embodiment of the present invention includes a crane body 310, a magnetic attraction unit 320, a moving connection 330, 340, and a control unit 350.

The crane main body portion 310 is a portion for lifting the material 10 attached to the magnetic attraction portion 320 and moving the target 10 to a desired position. The crane body portion 310 supports a plurality of magnetic attraction portions 320 and a load of the material 10 . ≪ / RTI > The crane main body 310 transports the work 10 while moving the plurality of magnetic attraction parts 320 in the left-right direction and the back-and-forth direction at the same time in a state of being installed on the work site. The crane main body 310 is not limited to a particular structure and shape as long as it can move the workpiece 10 in a lifted state as described above, and the detailed description thereof will be omitted since it follows the known art.

The magnetic attraction portion 320 is a portion for attracting the material 10 by a magnetic force, and a plurality of the magnetic attraction portion 320 are disposed below the crane body portion 310 formed to extend in the horizontal direction. The magnetic attraction part 320 is connected to the crane main body 310 via the moving connection part 330 and is linearly moved or rotated along the crane body part 310. The magnetic attraction part 320 according to an embodiment of the present invention includes a head part 321 and a suction main part 323.

The head portion 321 is connected to the moving connection portion 330 and has a width that widens toward the lower side. The upper portion of the head portion 321 has a width corresponding to the crane main body portion 310 and the movement connecting portion 330 so as to be stably connected to the crane main body portion 310 via the moving connecting portion 330. The lower portion of the head portion 321 is formed to have a width larger than that of the upper portion so as to stably connect the suction main body portion 323 having a width larger than that of the crane main body portion 310. [

The adsorption body 323 has a magnetic force generating device 324 for generating a magnetic force to adsorb the material 10. As the magnetic force generating device 324, an electromagnet capable of on / off and adjusting the magnetic force by adjusting the intensity of the electric current can be applied. The suction main body portion 323 is connected to the lower portion of the head portion 321 by a connecting member 322 such as a chain or a wire.

In one embodiment of the present invention, the adsorption body portion 323 has a rectangular cross-sectional shape. Thus, when the suction main body portion 323 is rotated, the extension direction and the width of the suction main body portion 323 are changed and the width of the suction main body portion 323 is changed by changing the width of the suction main body portion 323 (See Figs. 4 and 5)

The moving connection part 330 is a part for movably and rotatably connecting the magnetic attraction part 320 on the crane main part 310. The magnetic attraction part 320 can be linearly moved along the crane body 310 by operating the movable connection part 330 and can be rotated in the fixed position at a desired position. The moving connection part 330 according to an embodiment of the present invention includes a rail 331, a moving body 332, a wheel 336, a reciprocating driving device 337, a rotating body 338, and a rotation driving device 339 do.

The rail 331 is installed below the crane main body 310. The lower portion of the crane main body 310 has a downwardly opened shape, and a step portion 311 is formed to protrude inward from the edge portion. The rail 331 is installed on the step portion 311 formed to extend in the longitudinal direction of the crane main body portion 310.

The moving body 332 is connected to a wheel 336 moved along the rail 331 and linearly moved in the longitudinal direction of the crane body 310 by the rotation of the wheel 336. The moving body 332 according to an embodiment of the present invention includes a mounting portion 333, a wheel coupling portion 334, and a rotating body coupling portion 335.

The mounting portion 333 is a mounting space for mounting and fixing electric components such as the reciprocating drive device 337 for driving the moving body 332 and the rotating body 338, the rotation driving device 339, And a mounting surface. On the mounting portion 333, a reciprocating drive device 337, a rotation drive device 339, a control circuit constituting the control portion 350, and the like are provided.

The wheel coupling portion 334 is a portion where the wheel 336 is rotatably shaft-coupled, and is formed at the edge portion of the installation portion 333. [ The wheel engaging portion 334 is formed in a shape of '?' So that both ends of the rotation axis 336a of the wheel 336 can be fixed. The wheel 336 can be stably coupled to the wheel engagement portion 334 by the rotation shaft 336a while being positioned inside the wheel engagement portion 334 having the concave internal space portion.

The rotatable coupling portion 335 is a portion where the rotating body 338 is rotatably engaged at a fixed position and is formed in a cylindrical shape downwardly opened at a lower portion of the mounting portion 333. [ A locking protrusion 335a is formed at the edge of the rotary shaft 335 to prevent the upper portion of the rotary shaft 338 fitted in the rotary shaft 335 from being detached downward.

A plurality of wheels 336 are provided on a wheel engagement portion 334 formed on the moving body 332 and are moved along the rail 331 while being rotated by the reciprocating drive device 337. The reciprocating drive device 337 rotates the wheel 336 and moves the moving body 332. As the reciprocating drive device 337, a power generating device such as a motor can be applied. When the reciprocating drive device 337 is driven to rotate, the moving body 332 is moved along the rail 331 while the wheel 336 is rotated.

The rotating body 338 rotatably connects the magnetic attraction part 320 to the crane main body part 310 and is rotatably installed on the moving body 332 in a state of being connected to the magnetic attraction part 320. More specifically, the upper portion of the rotating body 338 is rotatably coupled to the rotating body coupling portion 335, and the lower portion of the rotating body 338 is integrally connected to the head portion 321.

The rotation driving device 339 rotates the rotating body 338 and the magnetic attraction portion 320 with the moving body 332 as a reference. As the rotation drive device 339, a power generation device such as a motor can be applied. When the rotation driving device 339 is driven to rotate, the rotating body 338 and the magnetic attraction part 320 are rotated together.

Although not shown in the drawings of the present invention, a bearing member for rotatably supporting the rotating body 338 is provided between the rotating body coupling portion 335 and the rotating body 338, and a reciprocating driving device 337, A reduction gear device may be installed on the connection portion of the rotation drive device 336 and the connection portion of the rotation drive device 339 and the rotation body 338. [

The texture sensing unit 340 senses the shape of the work 10. The texture sensing unit 340 may be a proximity sensor for sensing the distance to the workpiece 10 or a noncontact sensor such as a photo sensor or an optical sensor or a contact sensing sensor for sensing the shape of the workpiece 10 in direct contact with the workpiece 10, Type sensor or the like can be applied.

The material sensing unit 340 according to an embodiment of the present invention includes a plurality of non-contact sensors disposed along a long width on a suction main body 323. The bent shape of the workpiece 10 can be predicted by comparing the distances from the plurality of non-contact sensors to the measured workpiece 10.

In the description of the present invention, the portion of the material 10 having a bent shape forming the deepest groove is referred to as a valley 11. For example, the central part forming the deepest furrow among the materials 10 whose central part is curved concavely downward is referred to as a valley 11. The depth and position of the valleys 11 can be predicted using the texture sensing unit 340. [

The control unit 350 operates the moving connection unit 330 according to the shape of the material 10 sensed by the material sensing unit 340 so that the direction of the magnetic attraction unit 320 is aligned with the valley 11 of the material 10 Change.

FIG. 4 is a state diagram illustrating an example of using an apparatus for transferring a magnetic force of a crane according to an embodiment of the present invention. FIG. Fig. 5 is a schematic diagram of the use state of another example.

FIG. 4 shows a process of transferring a plate-like material 10 having a flat shape to a desired position. At this time, the texture sensing unit 340 senses that the upper surface of the material 10 is flat. In the control unit 350, the material sensing unit 340 senses the shape of the material 10, The magnetic attraction parts 320 are linearly moved close to each other.

As described above, by moving the plurality of magnetic attraction parts 320 closer to each other, it is possible to stably attract and transport the material 10 by using a greater number of the magnetic attraction parts 320. [ At this time, the longitudinal direction of the suction main body portion 323 is perpendicular to the extending direction of the crane main body portion 310, that is, the direction in which the magnetic attraction portion 320 is arranged. Accordingly, the contact area between the workpiece 10 and the plurality of suction main body portions 323 can be further expanded as compared with the embodiment shown in Fig.

FIG. 5 shows a process of transferring the sheet material 10 having a bent shape to a desired position. At this time, the material sensing unit 340 senses that the material 10 has a bent shape, and in the control unit 350, a plurality of The magnetic attraction portion 320 is rotated by 90 degrees.

At this time, a part of the plurality of magnetic attraction parts 320 located on the upper side of the workpiece 10 is rotated, and at the same time, the plurality of magnetic attraction parts 320 are linearly moved in the direction of expanding the mutual separation distance. Accordingly, the plurality of magnetic attraction parts 320 are prevented from colliding with each other during the rotation.

The plurality of attracting body portions 323 are continuously rotated along the valley portion 11 to contact the workpiece 10 by rotating and moving the plurality of magnetic attraction portions 320 in parallel with the extending direction of the valley portion 11, The material 10 can be stably attracted and conveyed by using the magnetic attraction part 320. [

According to the magnetic attraction and transfer device 300 of the crane according to the present invention having the above-described structure, the magnetic attraction part 320, which is in contact with the workpiece 10, can be linearly moved and rotated by the moving connection part 330 . Thus, while the magnetic attraction portion is moved and rotated in a position and direction that minimizes the occurrence of the gap between the magnetic attraction portion 320 and the workpiece 10, the attraction body portion 323 having a flat bottom portion, The contact surface between the workpiece 10 can be stably secured.

In addition, the plate-like material 10 deformed into a bent shape due to a defective shape can be transferred using only a crane without using a separate auxiliary device. Accordingly, it is possible to reduce the time and effort required for binding the work 10 to the crane by using a separate auxiliary device, and it is possible to reduce the time and effort required for binding the work 10 to the crane, You can prevent the miscarriage.

In order to strengthen the coupling force between the plate material 10 and the crane deformed into a curved shape by connecting the magnetic attraction part 320 on the crane main body part 310 using the moving connection part 330, It is not necessary to additionally provide a separate device for occupying the material 10, so that it is possible to effectively utilize the space of the fixed space on which the material 10 is placed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

10: material 11: valley
300: Magnetic attraction suction conveying device of a crane 310:
311: step portion 320: magnetic attraction portion
321: head part 322: connecting member
323: Adsorption body 324: Magnetic force generator
330: moving connection 331: rail
332: Moving body 333:
334: Wheel coupling portion 335:
335a: latching jaw 336: wheel
336a: rotating shaft 337: reciprocating driving device
338: Rotor 339: Rotary driving device
340: texture detection unit 350:

Claims (6)

A crane body portion for moving the workpiece;
A magnetic attraction unit installed at a lower portion of the crane main body and adapted to attract the workpiece by a magnetic force;
A moving connection part for connecting the magnetic attraction part to the crane body so as to be movable and rotatable;
A material sensing unit for sensing a shape of the workpiece; And
And a control unit for operating the moving connection unit according to the shape of the material detected by the material detection unit to change the direction of the magnetic attraction unit to be parallel to the valley of the material,
The magnetic attraction portion
A head connected to the mobile connection; And
And a suction main body connected to a lower portion of the head portion and having a magnetic force generating device for generating a magnetic force to adsorb the workpiece and having a width of a relatively narrow width and a width of an extended width,
The material-
And a sensor provided on the suction main body portion, wherein the sensor detects a bent shape of the workpiece by comparing a distance between the workpiece and the workpiece,
Wherein,
Wherein when the upper surface of the workpiece is detected to be flat on the workpiece sensing portion, a longitudinal direction of the suction body portion is perpendicular to an arrangement direction of the magnetic force absorbing portion, and the plurality of magnetic force absorbing portions are moved close to each other,
The magnetic attraction part is moved in a direction to expand the gap between the magnetic attraction parts and the longitudinal direction of the suction main part is aligned with the extending direction of the valley part of the workpiece, And the magnetic attraction portion is rotated.
delete The method according to claim 1,
The mobile connection unit includes:
A moving body installed linearly on the crane body; And
And a rotating body rotatably installed on the moving body and connected to the magnetic attraction part.
The method of claim 3,
The mobile connection unit includes:
A rail installed on the crane body;
A wheel installed on the moving body and moved along the rail;
A reciprocating drive device for rotating the wheel to move the moving body; And
And a rotation driving device installed on the moving body for rotating the rotating body.
5. The method of claim 4,
Wherein:
An installation part in which the reciprocating drive device and the rotation drive device are installed;
A wheel coupling portion formed at an edge portion of the mounting portion and axially coupled to the wheel; And
And a rotary coupling portion formed at a lower portion of the installation portion and rotatably coupled to the rotary body.
delete

Images