JPH11199172A - Rotary lifting magnet attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably improve working performance by providing a driving device to change the direction of an electromagnet block between a generating block and the electromagnet block. SOLUTION: A generating block 2 integrally has a head end of an arm of a power shovel and a stay 5 to be axially installed on a link on an upper part of a casing 4 with a generating unit of a generator, etc., built in it. An electromagnet block 3 integral fixes a metal frame body 8, an iron core 9 and the metal frame body 8 become electromagnets by an electric current by the generating unit on a coil 10 coiled around the iron core 9 and are attracted on a steel material, etc. Additionally, they are connected to each other integrally and free to rotate by connecting themselves inside and outside through a revolving bearing 12 fixed on a bottom part of the generating block 2, a bearing 14 fixed on an upper part of the electromagnet block 3 and a ball bearing 15. On the other hand, a driving device 16 of a hydraulic motor, etc., is fixed on the generating block 2, a pinion gear 17 installed on its axis of rotation is engaged with a gear 14 and the gear 14 revolves along the revolving bearing 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting magnet attachment which is attached to the tip of an earthmoving machine such as a power shovel to attract, sort, transport and release a steel or metal scrap by a magnetic force to a predetermined place. About.

Conventionally, a lifting magnet attachment of this type has only an electromagnet unit mounted on the tip of an arm of a power shovel, and a generator for exciting the electromagnet unit, a motor for driving a generator, a control panel, and other power generating units are hydraulically operated. Although it has been mounted on the shovel body, it has recently been known that the power generating unit and the electromagnet are integrally assembled in the same bracket and mounted on the end of the arm of a hydraulic shovel.

[0003]

The lifting magnet attachment in which the power generating unit and the electromagnet unit are integrated has the advantages of being compact as a whole and requiring no modification of the power shovel. Since the electromagnetic block containing the magnet is fixed so that it cannot change its direction, there is no problem in the handling of scraps and other loose goods.
It was extremely inconvenient for cargo handling work that required controlling the orientation of the member after suction.

Accordingly, an object of the present invention is to provide a lifting magnet attachment in which the direction of the electromagnet rotates or swings, whereby the position of the magnetized member in the rotation direction can be controlled. It is in.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a lifting magnet attachment having a power generating unit and an electromagnet unit, which is connected to an earthwork machine body arm. The stored electromagnet block is rotatably connected to the power generation block housing the power generation unit, and a driving device for changing the direction of the electromagnet block is provided between the power generation block and the electromagnet block.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 and 2, a lifting magnet attachment 1 according to the present invention.
Is connected to a power generating block 2 having a built-in power generating unit such as a power generator, a hydraulic motor for driving the power generator, and a control panel, and to be rotatable or swingable below the power generating block 2,
It comprises an electromagnet block 3 which is excited by the passage of the current generated by the power generation block 2.

The power generation block 2 has a power shovel arm (not shown) mounted on an upper part of a casing 4 in which a power generation unit such as a generator, a generator driving hydraulic motor, and a control panel is incorporated.
A mounting stay 5 is integrally provided, and is attached to a tip of the arm and a link through mounting holes 6 and 7 formed in the stay 5.

The electromagnet block 3 has an iron core 9 integrally fixed at the center of the metal frame 8 and a coil 1 around the iron core 9.
0, and the current generated by the power generation unit is passed through the coil 10 so that the iron core 9 and the metal frame 8 become electromagnets and are magnetically attached to steel or the like.

The electromagnet block 3 of the embodiment shown in the figure is formed in a circular shape, and a claw member 11 for performing various operations such as scraping of the lash is integrally fixed to a side portion. The claw member 11 is formed of a steel material, and is integrally connected to the iron core 9 and the frame 8, so that it constitutes a part of the electromagnet block 3, and is energized to form a metal scrap together with the main body of the electromagnet block 3. It can be used for adsorption and transportation of

The electromagnet block 3 is rotatably swingably connected to the power generation block 2 and rotates or swings with respect to the power generation block 2 by a rotating mechanism provided between the power generation block 2 and the electromagnet block 3. It has become.

In the embodiment shown in the drawings, a ring-shaped slewing bearing 12 integrally fixed to the bottom of a power generation block 2 and a ring-shaped gear 14 fixed to an upper portion of the electromagnet block 3 and having meshing teeth 13 formed on the outer peripheral side surface. And the inner and outer engagements via ball bearings 15 mounted between the opposing concave surfaces, so that the electromagnet block 3 is connected to the power generation block 2.
Are integrally and rotatably connected to each other.

On the other hand, a driving device 16 such as a hydraulic motor is fixed to the power generating block 2, and a pinion gear 17 attached to a rotating shaft of the driving device 5 is engaged with a meshing tooth 13 of a ring gear 14 of the electromagnet block 3. It is. Thus,
When the hydraulic motor 16 is operated, the ring gear 14 of the electromagnet block 3 is rotated by the pinion gear 17 along the slewing bearing 12 of the power generation block 2, and the electromagnet block 3 is rotated.
Rotate with respect to the power generation block 2.

In the embodiment shown in the drawing, the slewing bearing 12 of the power generating block 2 is set inside and the ring-shaped gear 14 of the electromagnet block 3 is set to the outside and engaged inside and outside. It is also possible to engage the inside and outside with the ring-shaped gear 14 of the electromagnet block 3 having the meshing teeth 13 formed on the inner peripheral surface of the electromagnet block 3 on the inner side. In this case, of course, the pinion gear 17 of the drive 16 engages the inner ring gear 14. In the embodiment shown in the drawing, the drive unit 16 is rotated by 360 ° using a hydraulic motor. However, when the rotation angle is limited, an actuator such as a cylinder is used to swing the electromagnet block 3 with respect to the power generation block 2. You may do so.

In order to supply a current from the power generation block 2 to the coil 10 of the rotating electromagnet block 3, in the embodiment shown in the drawing, a slip ring 18 to which the cable of the electromagnet block 3 is connected is connected to the center of the bottom plate 19 of the power generation block 2. So that the cable on the side of the power generation block 2 comes into contact with the rotary split ring 18. However, when the electromagnet block 3 is swung with a limited rotation angle, the connection cable between the power generation block 2 and the electromagnet block 3 can be lengthened to eliminate the need for the slip ring 18.

[0015]

The lifting magnet attachment of the present invention can be transported to a target position by changing the direction of the magnetically magnetized steel material, so that the work efficiency when loading and aligning it on a truck or the like is remarkably improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a lifting magnet attachment according to the present invention.

FIG. 2 is a partially cutaway side view of a lifting magnet attachment according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lifting magnet attachment 2 ... Power generation block 3 ... Electromagnetic block 4 ... Casing 5 ... Stay 6, 7 ... Mounting hole 8 ... Metal frame 9 ... Iron core 10 ... Coil 11 ... Claw member 12 ... Slewing bearing 13 ... Meshing teeth 14 ... Gear 15 ... Ball bearing 16 ... Driver 17 ... Pinion gear 18 ... Slip ring 19 ... Bottom plate

Claims (1)

[Claims] In a lifting magnet attachment having a power generating unit and an electromagnet unit integrally connected to an earthwork machine main body arm, an electromagnet block housing the electromagnet unit can be rotated to a power generating block housing the power generating unit. Lifting magnetic attachment characterized in that a driving device for integrally changing the direction of the electromagnet block is provided between the power generation block and the electromagnet block.