CN201108918Y

CN201108918Y - Bracket structure for thrust bearing of rolling mill working roller

Info

Publication number: CN201108918Y
Application number: CNU2007201150069U
Authority: CN
Inventors: 胡华杰; 周志强; 许斌
Original assignee: Ningbo Baoxin Stainless Steel Co Ltd
Current assignee: Ningbo Baoxin Stainless Steel Co Ltd
Priority date: 2007-09-21
Filing date: 2007-09-21
Publication date: 2008-09-03
Anticipated expiration: 2017-09-21

Abstract

The utility model provides a rolling mill working roll end thrust bearing bracket structure, which is composed of a body of a end thrust bearing bracket, a containing space arranged in the end thrust bearing bracket body; an end thrust bearing which is used for propping against a working roll and is able to rotate along with the working roll and is fixedly connected with a plunger piston of a hydraulic pressure cylinder; the hydraulic pressure cylinder which is used for controlling the square transfer motion of the end thrust bearing and arranged in the body of the end thrust bearing. The structure is characterized in that a pressure oil input tube arranged in a stander cavity includes a tube connected to a hydraulic pressure valve platform at the front end, and one end is connected with the rear end of the tube, and the other end thereof is provided with a hard tube connected with the hydraulic pressure cylinder on the end thrust bearing bracket body; moreover, the hard tube and the framework and the interface of the end thrust bearing support are not contacted. The rolling mill working roll end thrust bearing support structure provided by the utility model has the advantages that the new oil pathway does not pass through the interface, so that in operation with high speed, the variety of the interface cannot cause damage to the oil pathway, so as to avoid the leakage of the pressure oil, and ensure the normal operation of the device.

Description

A kind of operation roll of mill thrust bearing supporting structure

Technical field

The utility model relates to a kind of operation roll of mill thrust bearing supporting structure, relates in particular to a kind of pressure oil line structure of thrust bearing support, to solve the leakage of oil problem.

Background technology

Existing 20 roller reversible stainless-steel cold-rolling units are generally split type memorial archway, the roll gap opening degree is big, the advantage that working roll roller footpath is little, and possesses the fast hydraulic pressure press down system, the first intermediate calender rolls axial float, functions such as backing roll convexity adjusting have its superiority at aspects such as automatic thickness, template controls.This unit generally by coil of strip travelling bogie, cutter, left and right sides coiling machine, memorial archway body, about equipment such as volume packing paper machine, plat control system and roll change buggy form.

20 rollers are arranged in the mill housing body, be respectively eight of backing rolls, the second intermediate calender rolls six roots of sensation, four of first intermediate calender rolls, two of working rolls, with reference to illustrated in figures 1 and 2, wherein, working roll 4a is radially respectively by four first intermediate calender rolls location up and down, axially locate (only demonstrating a side structure among the figure) by former and later two bearing 3a that are installed on the thrust bearing support 2a, thrust bearing support 2a links by four bolt 10a and frame 1a, it can be elastic, and its action is to realize that by the hydraulic cylinder that is contained in thrust bearing support 2a inside the pressure oil of hydraulic cylinder is to supply to the hydraulic valve platform by hydraulic pump, the hydraulic valve platform comes out to pass frame 1a and through faying face oil circuit 21a, arrive hydraulic cylinder at last by pipeline 11a.

When the milling train high-speed rolling, the hydraulic cylinder release pressure of thrust bearing support 2a inside, and thrust bearing 3a stretches out under the effect of thrust bearing support 2a contained spring 5a, withstand working roll 4a, make working roll 4a with thrust bearing 3a high speed rotating. axial float that both can restraint of labour roller 4a, can reduce working roll 4a end wear again.

When being in roll change state or other off working states at milling train, pressure oil enters the oil circuit 21a of the hydraulic cylinder of thrust bearing support 2a inside by the faying face that ends frame 1a and frame 1a and thrust bearing support 2a, the plunger 6a of hydraulic cylinder stretches out, after overcoming spring 5a elastic force thrust bearing 3a is withdrawn, working roll 4a is not axially locating, be free to activity, the operative employee can change working roll easily like this, enhances productivity.

Coil of strip of the every production of milling train, working roll need be changed two to three times, when changing working roll, can often take place to carve between working roll end and the thrust bearing support and bump phenomenon.Because 20～30 coil of strips of one day output of a milling train, can make the attachment bolt of the working roll thrust bearing support that is fixed on the rolling-mill housing that loosening or micro-deformation take place like this, gap between frame and the thrust bearing support faying face is increased, O-ring seals 7a can become generation shape or damage under the impact of pressure oil, thereby cause pressure oil to leak, final unit can't ordinary production.

The utility model content

Technical problem to be solved in the utility model is to provide the favorably situated operation roll of mill thrust bearing of a kind of oil circuit supporting structure at the above-mentioned state of the art, by this new oil circuit arrangement, the generation that the pressure oil of having stopped to cause because of frame and thrust bearing support faying face excesssive gap leaks guarantees the normal operation of unit.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of operation roll of mill thrust bearing supporting structure, it comprises

The body of one thrust bearing support is provided with accommodation space in it;

One thrust bearing that is used to withstand working roll and can rotates with working roll is connected and fixed with the plunger of hydraulic cylinder;

One is used to control the hydraulic cylinder that aforementioned thrust bearing laterally moves, and is located in the body of thrust bearing support;

It is characterized in that:

One is located at the pressure oil input pipe in the frame cavity, the hard tube that it comprises that front end connects that a flexible pipe and an end to the hydraulic valve platform is connected with this flexible pipe rear end, the other end is connected with hydraulic cylinder pipeline on the body that is opened in the thrust bearing support, and the faying face of this hard tube and frame and thrust bearing support is contactless.

As preferably, the hydraulic cylinder pipeline port of described hard tube seal welding on body.Certainly can also adopt pipeline connecting mode common in the prior art.

As preferably, described hard tube is connected with flexible pipe by a snap joint.Certainly can also adopt pipeline connecting mode common in the prior art.

Compared with prior art, advantage of the present utility model is: the sealing ring of original frame and thrust bearing support faying face is removed, oil circuit is originally blocked with plug, by passing the cavity redesign oil circuit of frame, new like this oil circuit does not pass through faying face, so in high speed operation, the gap of faying face changes, can not cause that oil circuit damages, and then the leakage of having stopped pressure oil, the normal operation of unit guaranteed.

Description of drawings

Fig. 1 is an operation roll of mill thrust bearing supporting structure schematic diagram in the prior art.

Fig. 2 is the A portion enlarged drawing of Fig. 1.

Fig. 3 is the example structure schematic diagram.

Fig. 4 arranges schematic diagram for the embodiment oil circuit.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment: with reference to shown in Figure 3, the organic frame 1 in the present embodiment, thrust bearing support 2, working roll 4 and pressure oil input pipe 9.The thrust bearing support is made up of body 21, hydraulic cylinder 24, thrust bearing 3 and the hydraulic cylinder pipeline 23 of thrust bearing support.The sealing ring of original frame 1 with thrust bearing support 2 faying faces removed, and oil circuit 25 usefulness plugs 7 are originally blocked,

Has accommodation space in the body 21 of thrust bearing support, hydraulic cylinder 24 and hydraulic cylinder pipeline 23 all are positioned at the body 21 of thrust bearing support, also has thrust bearing 3, thrust bearing 3 is used to withstand working roll 4 and can rotates with working roll 4, it is connected with the plunger rod of hydraulic cylinder 24, hydraulic cylinder 24 communicates with hydraulic cylinder pipeline 23, is used to control thrust bearing 3 and laterally moves.

Pressure oil input pipe 9 is located in the frame cavity 13, is made up of flexible pipe 91 and hard tube 92, and flexible pipe 91 front ends connect to hydraulic valve platform 8, and particularly, flexible pipe 91 is connected with hydraulic valve platform 8 by a valve platform hard tube 94 and communicates, and middlely passes through 95 connections of valve platform joint;

Hard tube 92 1 ends are connected by snap joint 93 with flexible pipe 91 rear ends, hydraulic cylinder pipeline 23 ports of other end seal welding on the body 21 of thrust bearing support, and, this hard tube 92 is contactless with the faying face of frame 2 and thrust bearing support 2, can freely rotate, not be subjected to their restriction.

Claims

1, a kind of operation roll of mill thrust bearing supporting structure, it comprises

The body of one thrust bearing support (21) is provided with accommodation space in it;

One thrust bearing (3) that is used to withstand working roll (4) and can rotates with working roll (4) is connected and fixed with the plunger of hydraulic cylinder (24);

One is used to control the hydraulic cylinder (24) that aforementioned thrust bearing (3) laterally moves, and is located in the body (21) of thrust bearing support;

It is characterized in that:

One is located at the pressure oil input pipe (9) in the frame cavity (13), the hard tube (92) that it comprises that front end connects that a flexible pipe (91) and an end to hydraulic valve platform (8) is connected with this flexible pipe (91) rear end, the other end is connected with hydraulic cylinder pipeline (23) on the body that is opened in the thrust bearing support (21), and this hard tube (92) is contactless with the faying face of frame (1) and thrust bearing support (2).

2, operation roll of mill thrust bearing supporting structure according to claim 1 is characterized in that the hydraulic cylinder pipeline port of described hard tube (92) seal welding on the body (21) of thrust bearing support.

3, operation roll of mill thrust bearing supporting structure according to claim 1 and 2 is characterized in that described hard tube (92) is connected with flexible pipe (91) by a snap joint (93).