JPH0620780Y2 - Lifting electromagnet device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a hoisting electromagnet device for hoisting a cargo such as a steel material, and in particular, a hoisting electromagnet device suitable for hoisting a coiled wire. Regarding

(Prior Art) Generally, as shown in FIG. 4, a coiled diameter 5
mm to 15 mm wire rod (hereinafter simply referred to as wire rod coil) 31
Is likely to have irregularities on its surface (cylindrical surface), and the location and size of the irregularities are indefinite. Furthermore, although the wire rod coil 31 is bound by the binding band 32, the shape of the wire rod coil 31 is apt to collapse because the coil itself has no rigidity.

Various lifting electromagnet devices are known for use in lifting such a wire rod coil 31.
A lifting electromagnet device described in JP-A-55-48183 is known.

This hoisting electromagnet device is provided with a plurality of cores, and these cores are supported by a casing (yoke) independently of each other so as to be movable in diagonal directions (obliquely upward and diagonally downward). Since the core moves in accordance with the shape of (1), one end of the core is likely to come into contact with the suction surface, and even if there is a space between the core and the suction surface, the space is extremely small.

(Problems to be Solved by the Invention) By the way, in the case of a conventional hoisting electromagnet device, a casing 41 containing a coil (not shown) as shown in FIG.
A plurality of cores are movably supported diagonally upward,
In this state, the magnetic pole member 42 is surrounded by the coil. Therefore, the magnetic pole member 42 does not exist below both ends of the casing. That is, as shown in the figure, the space W on both sides
A zone (hereinafter referred to as a vacuum zone) in which the magnetic pole member 42 does not exist occurs.

On the other hand, if you want to simultaneously lift multiple wire rod coils,
As shown in FIG. 6, a plurality of hoisting electromagnet devices are attached to the hoisting beam 43 to hoist the wire coil 31. In this case, as shown in the drawing, the vacuum zones are present at intervals of 2 W between the adjacent lifting electromagnet devices. Therefore, when a plurality of wire rod coils 31 are lifted up, as shown in FIG. 7, the portions of the wire rod coils 31 corresponding to the vacuum zone are not adsorbed and slip off.

Similarly, when one suspension electromagnet device is used, the coil of the wire rod also slips down.

As described above, in the case of the conventional hoisting electromagnet apparatus, there is a problem that a part of the wire rod coil slides down, and as a result, the state of hoisting becomes unstable. In addition, vibration may occur during transportation, causing an unexpected accident such as the wire coil falling.

In addition, a moment is generated by a part of the wire rod coil that does not correspond to the magnetic pole member, and the wire rod coil easily falls due to vibration etc. during transportation.To prevent this, the suspension electromagnet device itself is increased in size. There must be.

An object of the present invention is to provide a hoisting electromagnet device capable of stably adsorbing a wire coil on a core.

Another object of the present invention is to provide a small lifting electromagnet device.

(Means for Solving the Problems) According to the present invention, a coil housed in a casing, and a plurality of main cores surrounded by the coil and supported by the casing independently of each other so as to be movable in a predetermined direction. And the auxiliary cores disposed at both ends of the main core in the arrangement direction and attached to the main core so as to move in the same direction as the main core.
(Operation) In the present invention, when the electromagnet is lowered onto the attracting surface of a cargo such as a wire coil, the main core moves in a predetermined direction according to the shape of the attracting surface. At this time, the auxiliary core also moves in a predetermined direction according to the shape of the suction surface. That is, the auxiliary core comes into contact with the portion corresponding to the above-mentioned vacuum zone, that is, the suction surface of the wire coil below the casing protruding outside the main core. As a result, the entire wire coil can be stably adsorbed.

(Example) Hereinafter, the present invention will be described with reference to examples.

Referring to FIG. 1, a hoisting electromagnet apparatus 1 according to the present invention includes a yoke 11, and a plurality of main cores (main magnetic pole members) 12 are locked to the yoke 11 as shown. Specifically, a flange portion 12 a is formed on the upper end of the main magnetic pole member 12, and the main magnetic pole member 12 is locked to the yoke 11 by contacting the flange portion 12 a with the yoke 11. The main magnetic pole members 12 are arranged along both ends of the yoke 11 and have a substantially V-shape. The lower end of the main magnetic pole member 12 is formed in a substantially cylindrical surface shape.

The coil element 13 so as to surround the main magnetic pole member 12.
And 14 are mounted on the yoke 11. The coil elements 13 and 14 include coil cases 13a and 14a,
The coils (not shown) housed in the coil cases 13a and 14a are provided. That is, these yokes 11
A casing is constituted by the coil cases 13a and 14a, and the main magnetic pole member 12 is independently supported by the casing so as to be slidable in an oblique direction.
At this time, the casing projects from the side surface of the main magnetic pole member 12 because the casing surrounds the main magnetic pole member 12.

2 and 3, the magnetic pole members located at both ends of the main magnetic pole member 12 in the arrangement direction are respectively formed with boss portions 15 protruding in the arrangement direction (one is not shown).
A plurality of auxiliary cores (auxiliary magnetic pole members) 16 are supported by the boss portion 15. That is, as shown in the drawing, the auxiliary magnetic pole member 16 is formed with a rectangular through hole 16a,
By inserting the boss portion 15 into the through hole 16 a, the auxiliary magnetic pole member 16 is supported by the boss portion 15. Further, as will be described later, the vertical movement of the auxiliary magnetic pole member 16 is regulated by the through hole 16a. A retaining portion 15a is attached to the tip of the boss portion 15. The auxiliary magnetic pole member 16 attached as described above is the coil case 1.
It will be located below 3a or 14a.

When the wire rod coil 31 is hoisted using the hoisting electromagnet device 1 configured as described above, the wire rope attached to the yoke 11 is hoisted down to lower the hoisting electromagnet device 1 and The main magnetic pole member 12 is lowered on the attracting surface (cylindrical surface). At this time, the main magnetic pole members 12 move in an oblique direction independently of each other in accordance with the shape of the attraction surface. Therefore, the main magnetic pole member 1
2 contacts the suction surface. On the other hand, the auxiliary magnetic pole member 16 also moves in the vertical direction within the range defined by the through hole 16a and comes into contact with the attracting surface of the wire rod coil 31. That is, the wire rod coil 31
The whole comes into contact with the main magnetic pole member 12 and the auxiliary magnetic pole member 16, and the vacuum zone disappears. As a result, the wire rod coil can be stably transported.

Then, the coil is energized to carry the wire rod coil 31 to a predetermined position.

Even when a plurality of hoisting electromagnet devices 1 are provided, the vacuum zone is eliminated in the same manner, so that the wire rod coil can be stably transported.

In addition, when a part of the wire rod jumps out in the radial direction of the wire rod coil 31, the jumping wire rod may be caught by the auxiliary magnetic pole member 16. In order to prevent this, as shown in FIG. 2 and FIG. Further, the extension guide member 15b may be provided above the retaining portion 15a.

(Effects of the Invention) As described above, in the present invention, when lifting a cargo such as a wire coil, the magnetic pole member can be brought into contact with the entire suction surface of the wire coil, and the wire coil can be attracted stably. be able to.

Further, since the magnetic pole member can be brought into contact with the entire attracting surface of the wire rod coil, power consumption can be reduced and the suspension electromagnet device can be downsized.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a hoisting electromagnet device according to the present invention, FIG. 2 is a front view showing a main part of an embodiment of a hoisting electromagnet device according to the present invention, and FIG. 3 is according to the present invention. 4 to 7 are perspective views showing a main part of an embodiment of the suspension electromagnet device.
The figure is a figure for demonstrating the conventional suspension electromagnet apparatus. 11 ... Yoke, 12 ... Main magnetic pole member, 13 ... Coil element, 16 ... Auxiliary magnetic pole member.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Kaoru Umezu 1 Kimitsu, Kimitsu-shi, Chiba Nippon Steel Co., Ltd. Kimitsu Works (72) Creator Koji Tsugumura Kimitsu 1, Kimitsu, Chiba Nippon Steel Co., Ltd. Kimitsu Steel In-house (72) Inventor Hiroyuki Ishii 1 Kimitsu, Kimitsu-shi, Chiba Nippon Steel Corp. Kimitsu Works

Claims (1)

[Scope of utility model registration request] 1. A coil housed in a casing, a plurality of main cores surrounded by the coil and supported by the casing so as to be movable in a predetermined direction independently of each other, and both ends in the arrangement direction of the main cores. And an auxiliary core attached to the main core so as to be movable in the same direction as the main core.