JPS5895089A - Method and device for selectively hanging up steel material, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention provides a selective lifting method for selectively extracting and lifting an intermediate arbitrary material from among a large number of adjacently arranged steel materials, etc. using a lifting magnet, and a method for carrying out this method. This relates to a device used for.

In steel mills, etc., it is necessary to select and extract a desired number of billets, ingots, and other square steel pipes from a large number of rows by material or size according to rolling schedules and shipping instructions. Conventionally, in response to this requirement, for example, as shown in FIG. 1(A), billet A is the middle billet in the top tier of billets stacked in several rows.

When lifting the two pieces b using a lifting magnet, the length of the magnetic pole of the 7-taing magnet M is usually much longer than the width of the billet, so the magnetic pole of the lifting magnet must be attached only to the billet to be lifted. Unable to make them come into contact with each other, the next step was to lift them out. That is, first, a number of billets corresponding to the magnetic length of lifting magnets (a) and (b) to be lifted and those adjacent to them (a) and (b) to be lifted are suspended, and then billets are suspended as shown in the same figure (b). After moving it to another location as shown in the figure, lift out the non-hanging object located at the end using the pole end of the lifting magnet and remove it, as shown in the same figure (c). The work process of lifting and taking out the target pyrenes a and b is extremely troublesome and at the same time inefficient.

It is an object of the present invention to provide a method that allows only the intermediate object to be extracted to be directly lifted out without performing such operations, and an apparatus for carrying out this method.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to illustrative embodiments.

Figures 2 and 3 show the first embodiment of the device of the present invention. In the figures, 1a is a U-shaped unit core piece with both lower ends serving as magnetic poles, and the thickness E of each core piece is equal to the hanging length. The process length is several times the width of the target steel material 2, and a large number of them are stacked horizontally in rows to constitute the electromagnetic core 1 of one electromagnet device. The lower end protrudes downward through the vertical through hole,
Each shell can be slid vertically. 4.5 is an electromagnetic coil that surrounds each magnetic pole portion of the electromagnetic core 1, and is housed in the coil case 3. Reference numeral 6 denotes a frame whose lower end is fixed to the upper surface of the coil case 3, and a hanger 7 is provided at the upper part for hanging from a crane or the like. Reference numeral 8 denotes a horizontal arm attached to the lower end of a sliding frame 9 that is slidably supported by the hanging frame 6, and a plurality of supporting pieces 10 are provided on the lower surface of the horizontal arm 8 to project downward. 1
Reference numeral 1 denotes a connecting piece protruding from the upper end of each unit core piece 1a, and these and the above-mentioned support piece have holes in the horizontal direction for passing common connecting rods 12 and 13 from the left and right sides (in Fig. 2), respectively. A hydraulic cylinder 014, which is provided concentrically and transparently, is a hydraulic cylinder that raises and lowers the horizontal arm 8, and is vertically installed across the filter frame 6 and the sliding frame 9. 15. 15 is a no stopper and is provided at the lower end of the coil case 3 to support the weight of the device when it lands on the ground. For example, as shown in Figure 4 (a), for example, as shown in Fig. 4 (a), the steel materials in the middle, the middle steel materials a/, b/
To explain the case of suspending the connecting rod 1, first
2 and 13, and with no current supplied to the electromagnetic coil 45, the magnetic pole part of the electromagnetic core 1 made up of the unit core piece 1a is brought into contact across the target steel material /, b/ and the steel material adjacent thereto. (land). In this case, each unit core piece 1a is vertically slidable, and the lower end of each unit core piece 1a projects from the lower end surface of the stop bar 15 when the unit core piece 1a is in a position away from the steel material before the device lands. , protrudes beyond the stopper by at least an amount corresponding to the unevenness of the top surface height of each steel material, so even if the top surface of the steel material is uneven, if the entire weight of the device is supported by the stopper 15 after landing, All of the opposing unit core pieces 1a come into close contact with the steel material a'b'.

Next, in this state, each of the connecting rods 12 and 13 is extracted from the right side, and each connecting piece 11 of the steel material that is not the object of extraction is located on both sides of the steel materials a/ and b/ that are the object of extraction, and the connecting rods 12 and 13 are each pulled out from the right side. The supporting piece 1o is passed through the hole, thereby forming the target steel material a/.

Except for b', the other steel members are the connecting piece 11 and the connecting rod 12.
13 and the support piece 10 to the arm 8.

In this position, the hydraulic cylinder 14 is extended and the sliding frame 9 is raised. Therefore, the horizontal arm 8 integrated therewith is raised to lift the steel material a/.

All of the unit core pieces 1a facing the steel materials other than b' are pulled up as shown in FIG. 4(b), and the magnetic pole portions of the electromagnetic core come into contact only with the steel materials a/ and b/ to be lifted. In this state, a current is supplied to the electromagnetic coil 4.5 to excite the magnet, and then a crane or the like is operated to pull up the device.
In the first embodiment, the connecting rods 12 and 13 are moved from left to right as a means for connecting steel materials other than the steel materials to be lifted to the horizontal arm 8 before the electromagnet is energized. It is structurally simple because it is carried out by inserting it, but it is possible to lift when the steel materials to be lifted are adjacent, but if the steel materials to be lifted are present with a steel material not to be lifted in between - There is an inconvenience in that during the lifting work, it is not possible to lift only the steel materials to be lifted.

In the second embodiment shown in FIGS. 5 and 6, this drawback can be eliminated. As shown in FIG. A series of support plates 16 and 16' are provided opposite each other with the support plates 11 in between, and horizontal through holes are provided in both of the support plates at positions opposite to the horizontal through holes provided in each of the connecting pieces 11. , and by inserting or removing the vial 17 through the through hole of the support piece 11 of the unit core piece 1a corresponding to each through hole, each unit core piece 1a is connected to the horizontal arm 8. is made so that it can be separated.

Note that the configuration of other parts is the same as that of the first embodiment, so the explanation thereof will be omitted.

In the second embodiment, each unit core piece can be connected to the horizontal arm by attaching and detaching the pin 17, or can be separated, so that the arrangement position of the steel materials to be lifted can be determined before the electromagnet section is energized after the device lands on the ground. Regardless of the situation, all of the unit core pieces facing the steel material other than the steel material to be lifted can be lifted to a height beyond the reach of electromagnetic attraction, so no matter where the steel material to be lifted is located, Only selective hanging is possible.

7 and 8 show a third embodiment, in which one suspension frame 6 is provided with the same number of hydraulic cylinders 18 as each unit core piece 1a, and each of the cylinders is By connecting a piston rod to each unit core piece 1a, each unit core piece can be individually raised and lowered by a hydraulic cylinder. As in the case of the example, there is an advantage that the selected amount of ρ can be set for only the steel material to be lifted regardless of the arrangement of the steel material to be lifted, and the lifting and lowering of the unit core pieces can be performed by remote control.

As can be seen from the above explanation, the present invention is applied after the device is lowered onto the suction object containing the objects to be lifted (after landing), which are laid out in a flat manner.
In this system, a unit core piece is lifted up from an object that does not need to be lifted, and it is energized in this position so that an electromagnetic attraction force is applied only to the object to be lifted. If only the movable magnetic pole corresponding to the object to be lifted is made to protrude, it is extremely difficult to bring only that magnetic pole into contact with the object as accurately as the object to be lifted by operating a crane. Regardless of the arrangement, one can be selected from among various steel materials etc. arranged in large numbers without worrying about such problems.
It is possible to reliably select and lift only the desired steel material required for each lifting operation. In addition, all the magnetic poles of the device are made up of unit core pieces that can be raised and lowered, and a stopper of the required length is provided, and this stopper supports the weight of the entire device when it lands, so that the steel materials laid in the Even if there is a difference in height on the suction surface, which is the upper surface,
! Y! This has the effect of making it possible to reliably bring the magnetic pole into close contact with steel materials that require bulging.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the procedure of conventional lifting and lifting work, Figs. 2 and 3 are a front view and a partially cutaway side view showing the first embodiment of the device of the present invention, and Fig. 4 5 and 6 are front and side views showing a second embodiment of the apparatus according to the present invention, and FIG. 7 is an explanatory diagram of the work procedure. Figure 8 is a front view and a side view showing a third embodiment. 1...-Electromagnetic core 1as--Unit core piece 8.9.1
4. Fist/elevating means 15...stopper applicant Shinko Electric Co., Ltd. agent Patent attorney Haruya Saito 3 Figure 5 Figure 2, Name of development M 6 Method and device for selection of steel materials, etc. 3. Relationship with the case of the person making the amendment Patent Applicant Address 3-12-2 Nihonbashi, Chuo-ku, Tokyo Name (
20ω Shinko Electric Co., Ltd. 4, Agent (1) Add the following information in the margin to the right of “Patent Application” in the application. (Patent application based on the provisions of the proviso to Article 38 of the Patent Act)
(2) Next to the "Title of the invention" column in the application form, provide a column for "Number of inventions stated in the scope of claims," and write "2" as the number of inventions in that column.

Claims (1)

[Claims] 1. A lifting magnet device is used, which consists of a series of electromagnetic cores and magnetic poles made up of unit core pieces that are vertically divided and can be raised and lowered individually. A steel material that lands on a suction object, raises only the unit core piece facing the suction object other than the suction object to be lifted, and after this lift, is energized to suspend only the target suction object. Selective lifting method 02, in which a series of electromagnetic cores are constructed with magnetic poles by unit core pieces that are vertically divided with a thickness t that is smaller than the width of the suspended object and are mounted so that they can be raised and lowered. In addition, a lifting means for temporarily raising the unit core piece facing the suction object other than the suction object to be lifted when it is in a state of landing on the suction object, and a stopper metal bias that supports the weight of the entire device in the above-mentioned landing state. A selective lifting device for steel materials, etc., characterized in that a suction force necessary for lifting is generated in a unit magnetic pole piece that is in contact with a non-ejected object in a landing position.