CN201043571Y

CN201043571Y - Durable structure bearing suitable for strip steel continuously hot dipping aluminum-zinc alloy plating tank

Info

Publication number: CN201043571Y
Application number: CNU2007200841426U
Authority: CN
Inventors: 程华清; 周巍巍
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-12
Filing date: 2007-04-12
Publication date: 2008-04-02
Anticipated expiration: 2017-04-12

Abstract

The utility model relates to a durable structure bearing applicable to a plating bath of continuous hot aluminium zinc alloy-plated strip steels, which belongs to the field of devices of hot dipping metal-plated strip steels. The structure bearing comprises a bearing seat, a transitional sleeve, an outer bearing ring, an inner bearing ring and a rolling body, wherein, the transitional sleeve (2) is arranged between the bearing seat (1) and the outer bearing ring (3), the rolling body (4) is arranged in a rolling chute (6) positioned between the inner side of the outer bearing ring (3) and the outer side of the inner bearing ring (5), and the inner hole (7) of the inner bearing ring (5) matches a working roll shaft. The structure bearing is a rolling bearing, which is characterized by little friction resistance, little abrasion, small radial gap, accurate radial positioning, durabiilty and increased service life; when being operated, the utility model does not generate radial and axial jumps and is adapted to the high-temperature working enironment, that is, the utility model has the function of automatically compensating positions according to the change of the temperature of working environment; moreover, the utility model can notably increase the quality of the plating of the plate surface of continuous hot aluminium zinc alloy-plated strip steels, thus saving metal resources and reducing production cost.

Description

A kind of durable structure bearing that is applicable to band steel continuous zinc/aluminium/aluminium zinc coating Alloyed launder

Technical field

A kind of durable structure bearing that is applicable to band steel continuous zinc/aluminium/aluminium zinc coating Alloyed launder of the utility model belongs to band steel hot dipping metal apparatus field.

Background technique

Band steel continuous hot-dipping is the band steel that certain speed is moved continuously, by the metal coating bath of high-temperature fusion, thereby forms a kind of technology of the sacrificial metal coating of required thickness at belt steel surface.The temperature of continuous zinc/aluminium/aluminium zinc coating Alloyed launder is about 600 ℃, and the band steel is dragged by the running of turning roll, registration roller in this high temperature coating bath.Generally speaking, the bearing structure of supporting turning roll, registration roller is to be under the harsh working condition of high temperature corrosion and wearing and tearing, if design is improper, not only causes the early failue of bearing structure itself, and punish severely the quality that influences the hot dip coating, can not satisfy the production needs.The sliding shaft sleeve structure that the support mechanism of the two ends roll shaft of for example existing turning roll, registration roller is made up of axle sleeve and bearing shell, in use just there are the following problems for this kind structural type:

1. the radial clearance between axle sleeve and bearing shell reaches 5～8 millimeters, axially can't locate, and causes turning roll, registration roller circular runout in the running in the coating bath excessive, axle sleeve and the wearing and tearing of bearing shell matrix are violent, not only lack working life, generally be no more than 30 days, and cause strip steel thickness of coating inhomogeneous;

2. movement process surface friction drag is bigger between axle sleeve and bearing shell, causes turning roll, registration roller in the coating bath asynchronous with the motion speed of strip steel in the running, makes plate face coating scratch occur, and can't produce coating band steel as thin as a wafer;

3., cut in addition, so each replacing is all necessary because axle sleeve and roll shaft must connect with welding.It is very difficult to make assembling change component.

In sum, existing sliding shaft sleeve structure not only itself is not durable, early failue, and directly influence the plate face quality of the face continuous hot aluminium-plated zinc alloy of strip steel, cause such product percent of pass of present production pacing up and down at not high percentage always.Also cause simultaneously a large amount of alumin(i)um zinc alloy wastings of resources.Become the common in the industry problem of paying close attention to so address the above problem.

The model utility content

The purpose of this utility model provides a kind of durable structure bearing that is applicable to the continuous zinc/aluminium/aluminium zinc coating Alloyed launder, replace the existing sliding shaft sleeve structure of forming by axle sleeve and bearing shell, the working life of extending structure bearing, improve the plate face quality of the face continuous hot aluminium-plated zinc alloy of strip steel, satisfy the high rank test requirement of product, and the corresponding saving metals resources of energy, reduce production costs.

The utility model purpose is achieved by the following technical solution:

The utility model is applicable to the durable structure bearing of continuous zinc/aluminium/aluminium zinc coating Alloyed launder, comprise bearing support, spacer shell, bearing outer ring, bearing inner race and rolling element, between its bearing support 1 and the bearing outer ring 3 spacer shell 2 is arranged, bearing outer ring 3 is fixedly mounted in the spacer shell 2, rolling element 4 is arranged in the rolling slideway 6 between the outside of the inboard of bearing outer ring 3 and bearing inner race 5, rolling slideway 6 is by constituting with the inner arc flute profile rolling slideway of the bearing outer ring 3 of the suitable shape of rolling element and the outside flute profile rolling slideway of bearing inner race 5, and the endoporus 8 of bearing inner race 5 cooperates with the roll shaft of working.

This airframe bearing is a rolling bearing structure, and design has a spacer shell between its bearing outer ring and the bearing support, and bearing outer ring is fixed in this spacer shell, is interference fit when spacer shell and bearing support assembling, and spacer shell and bearing support then are Spielpassung during work; Its bearing inner race is a Spielpassung when assembling with the work mandrel, bearing inner race then is an interference fit with the work mandrel during work, this airframe bearing not only surface friction drag is little, wearing and tearing are few, and bearing structure adapts to the high-temperature operation environment, operating ambient temperature is changed the rolling element change in location that causes, have the function of automatic compensation.

The utility model airframe bearing is a rolling bearing, this airframe bearing surface friction drag is little, wearing and tearing are few, radial clearance is little, the axially locating standard, during operation, do not produce and radially reach axial runout, and adapt to the high-temperature operation environment, operating ambient temperature is changed the function that automatic compensated position is arranged, the plate face quality of coating height of the hot-dip coating aluminium-zinc alloy of being produced, can satisfy the requirement of high grade product standard, the design's bearing bearing is not only own durable, and increase working life, and obviously improve the plate face quality of coating of being with the face continuous hot aluminium-plated zinc alloy of steel, save metals resources and reduce production costs.

Description of drawings

Fig. 1 the utility model airframe bearing schematic representation.

Fig. 2 the utility model airframe bearing end view

The dolioform rolling element schematic representation of Fig. 3 the utility model

Fig. 4 hot-dip aluminizing zinc is produced tape steel operation signal circle

Embodiment

Now 1-4 further specifies the utility model and how to implement in conjunction with the accompanying drawings:

As Figure 1-3, this airframe bearing comprises bearing support, spacer shell, bearing outer ring, bearing inner race and rolling element, between its bearing support 1 and the bearing outer ring 3 spacer shell 2 is arranged, bearing outer ring 3 is fixedly mounted in the spacer shell 2, rolling element 4 is arranged in the rolling slideway 6 between the outside of the inboard of bearing outer ring 3 and bearing inner race 5, rolling slideway 6 is by constituting with the inner arc flute profile rolling slideway of the bearing outer ring 3 of the suitable shapes of rolling element 4 and the outside flute profile rolling slideway of bearing inner race 5, and the endoporus 7 of bearing inner race 5 cooperates with the roll shaft of working.

As shown in Figure 1, the design's airframe bearing is installed in respectively among the supporting arm B of turning roll Z, registration roller D, the roll shaft of turning roll Z, registration roller D then cooperates respectively in the endoporus 7 of the bearing inner race 5 that is installed in corresponding the design's airframe bearing, with bearing cover 8 sealings.During assembling, should make spacer shell 2 and bearing support 3 be interference fit, the endoporus 7 that makes bearing inner race 5 is a Spielpassung with the roll shaft of turning roll Z, registration roller D respectively.

Continuous belt steel hot-dip coating aluminium-zinc alloy production line, as shown in Figure 4, in the hot-dip coating aluminium-zinc alloy coating bath C, the high-temperature fusion alumin(i)um zinc alloy of certain liquid is housed, band steel S is dragged because of the rotation that is subjected to turning roll Z, prelocalization roller Q and back registration roller H, and speed and direction move running continuously in accordance with regulations.In conjunction with structure shown in Figure 1, turning roll Z, the roll shaft of prelocalization roller Q and back registration roller H is then corresponding respectively to be installed in the endoporus 7 of bearing inner race 5 of this airframe bearing among the supporting arm B separately, during assembling, each roll shaft is endoporus 7 Spielpassung of corresponding bearing inner race 5 with it respectively, in high temperature hot dip production environment, each roll shaft respectively corresponding bearing inner race 5 with it endoporus 7 interference fit, the spacer shell 2 of outer ring is the interference fit during then by assembling with bearing support 3, become Spielpassung, demonstrate the adaptation high-temperature operation environment that this airframe bearing has, operating ambient temperature is changed the function that automatic compensated position is arranged, enter the band steel of hot-dip coating aluminium-zinc alloy coating bath continuously, in elevated temperature heat plate golding aluminium zinc alloy coating bath, by means of turning roll Z, the rotation of prelocalization roller Q and back registration roller H and dragged and pass through coating bath, the band steel shifts out the hot-dip coating aluminium-zinc alloy coating bath, through corresponding operation, forms hot-dip coating aluminium-zinc alloy coating at belt steel surface immediately.Because this airframe bearing radial clearance is little, the axially locating standard is during operation, do not produce and radially reach axial runout, so the hot-dip coating aluminium-zinc alloy quality of coating height that the belt steel surface by hot dip solution forms, thickness is even, do not have scratch, can satisfy the requirement of high grade product standard.And this airframe bearing is durable, and obviously increase working life.

Claims

1. one kind is applicable to the durable structure bearing of being with steel continuous zinc/aluminium/aluminium zinc coating Alloyed launder, comprise bearing support, spacer shell, bearing outer ring, bearing inner race and rolling element, it is characterized in that between bearing support (1) and bearing outer ring (3), spacer shell (2) being arranged, bearing outer ring (3) is fixedly mounted in the spacer shell (2), rolling element (4) is arranged in the rolling slideway between the outside of the inboard of bearing outer ring (3) and bearing inner race (5) in (6), and the endoporus (7) of bearing inner race (5) cooperates with the work roll shaft.

2. be applicable to the durable structure bearing of band steel continuous zinc/aluminium/aluminium zinc coating Alloyed launder according to claim 1 a kind of, the slideway (6) that it is characterized in that rolling is by forming with the inner arc flute profile rolling slideway of the bearing outer ring (3) of the suitable shape of rolling element (4) and the outside flute profile rolling slideway of bearing inner race (5).

3. according to a kind of durable structure bearing that is applicable to band steel continuous zinc/aluminium/aluminium zinc coating Alloyed launder of claim 1, it is characterized in that rolling element (4) is spherosome or dolioform cylindrical body.