Hydraulic pressure adjustable type slipper bearing device for supporting large-sized mill barrel

Abstract

The invention discloses a hydraulic pressure adjustable type slipper bearing device for supporting a large-sized mill barrel, which comprises a protection cover (1), bearing pads (3), hydraulic cylinders (4) and a base (5), wherein the hydraulic cylinders are symmetrically distributed and fixed on the base; the upper end of each hydraulic cylinder is connected with a bearing pad; the bearing pads are used for supporting the barrel (2); the two ends of the base is connected with the protection cover of which the diameter is greater than the external diameter of the barrel and the shape is larger than a semicircle; each hydraulic cylinder consists of a convex sphere seat (6), a piston (7), a regulating nut (10), a cylinder seat (11) and a sealing ring (12); and an anti-loosening device comprises an anti-loosening pressing sleeve (8), a screw (13), a washer (14) and the like. After the height regulation of the piston is determined, the hydraulic cylinders are disassembled, and the high pressure of the barrel acts on the regulating nut; and in order to prevent the loosening of the regulating nut due to vibration generated when the barrel is operated, the anti-loosening pressing sleeve is fixed on the regulating nut through the screw, so that the rotating joint of the regulating nut and the piston cannot be loosened, and the safe and stable operation of the barrel can be ensured.

Description

technical field [0001] The invention belongs to the technical field of sliding shoe bearing support devices, in particular to a hydraulically adjustable sliding shoe bearing device used for supporting large mill cylinders. Background technique [0002] The support of medium and small mill cylinders generally adopts main bearing structure or rolling bearing structure. The main bearing structure has only one supporting bearing shell, which adopts sliding lubrication method, and its structure is simple, easy to install and low in cost. The rolling bearing structure adopts the rolling lubrication method, which has the characteristics of energy saving, high installation accuracy requirements and high equipment cost. The disadvantage of the above two support structures is that the load that the bearing can bear is relatively small. [0003] The support of the larger mill cylinder generally adopts a sliding shoe bearing structure, that is, two sets of sliding shoe bearings are sy...

AI Technical Summary

Problems solved by technology

[0005] Using two sets of sliding shoe bearings to support the cylinder of a large or super large mill can no longer meet the requirements of use. The solution is to use multiple sets of sliding shoe bearings. Each bearing bush must be able to withstand a greater load. The mill cylinder When working, the contact gap between each bearing bush and the cylinder must be the same, so that the thickness of the sliding lubricating oil film formed can be the same, so that the large or super large mill can run safely and smoothly

But the problem is: because each bearing pad will produce manufacturing errors during the manufacturing process, installation errors will occur during equipment installation, and large elastic deformation errors will be caused when the sliding shoe bearing bears a large load. The contact gap between the bearing pad and the cylinder is not the same

Especially when maintaining or replacing the bearing bush, the mill cylinder must be supported to repair and replace the bearing bush of the sliding shoe bearing, but it is very difficult to support the mill cylinder, and at the same time due to the large Or the production capacity of the ultra-large mill is very large, and it can lose hundreds of thousands or even millions of profits in one day of shutdown

Images