A special spreader for disassembling universal joints on vertical rolling mills and its use method

Abstract

The invention relates to a lifting appliance special for demounting and mounting of a universal coupling on a vertical mill and an application method of the lifting device. The lifting appliance comprises a lifting beam, a clamping hoop and a balance weight. The clamping hoop and the balance weight are arranged at the two ends of the lifting beam correspondingly. The two sides, in the longitudinal direction, of the lifting beam are each provided with a plurality of lifting lugs. The clamping hoop is composed of an upper set of hoops and a lower set of hoops capable of being independently adjusted and is suitable for clamping two kinds of universal couplings with the fixed length and the adjustable length. The balance weight is fixedly or movably mounted on the lifting beam, and the total length of the lifting beam does not exceed 4 m. The lifting device special for demounting and mounting of the universal coupling on the vertical mill is simple in structure and convenient to adjust and use, the universal coupling can be demounted and mounted more efficiently and safely, the overall length is controlled within 4 m, and operation space is saved. The clamping hoop of the lifting appliance is composed of the two sets of hoops capable of being independently adjusted, and is suitable for two kinds of universal couplings with the fixed length and the adjustable length and high in universality.

Description

technical field [0001] The invention relates to an industrial sling, in particular to a special sling for dismounting and assembling a universal joint on a vertical rolling mill and a using method thereof. Background technique [0002] Such as figure 1 As shown, it is a schematic structural diagram of a vertical rolling mill 1, which is mainly used in the production of wire rods or rods on the binding line. A motor 3 and a gear box 4 are installed above the frame 2 of the vertical rolling mill 1, and a bottom bracket 5 is arranged at the bottom. The universal joint 6 is installed vertically between the gear case 4 and the bottom bracket 5, and is installed at last after other equipments are installed. It can be seen from the figure that the installation position of the universal coupling 6 is in the C-shaped mouth formed by the rolling mill frame 2 and mechanical equipment, and there are equipment blocks on the upper, lower and side sides, so the installation of the univers...

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Problems solved by technology

But it has the following disadvantages: 1) the hoop and the boom are connected at 135°, when the hoop is in a vertical state, the minimum angle between the boom and the horizontal line is 45°, and the counterweight side of the boom is inclined downward; Therefore, when the height of the rolling mill table is limited or the boom is long, its movement space is limited; and it is not intuitive to observe whether the hoop is in a vertical state; 2) the counterweight is set under the boom, and there are multiple For the counterweight, when the boom is tilted, it is easy to cause instant instability; 3) There is only one large lifting lug on the boom, and the balance is all realized by the counterweight, which is inconvenient to adjust; 4) The counterweight is lifted by the universal coupling The weight and position cannot be adjusted during and during installation, and the adjustability is poor; 5) The hoop is a semi-circular two-half piece structure, which is suitable for fixed-length universal couplings, and for adjustable-length couplings. Insufficient position, poor clamping reliability; therefore overall poor versatility

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