CN2374288Y

CN2374288Y - Recoiler hold down device of cold-strip mill

Info

Publication number: CN2374288Y
Application number: CN 97225478
Authority: CN
Inventors: 毛昕; 赵巍; 贾成洲
Original assignee: Angang Steel Co Ltd
Current assignee: Angang Steel Co Ltd
Priority date: 1997-06-20
Filing date: 1997-06-20
Publication date: 2000-04-19
Anticipated expiration: 2007-06-20

Abstract

The utility model provides a recoiler hold down device of a cold rolled steel strip mill, which is composed of an air cylinder, a transverse beam, a pressure roller, a pressure roller shaft, a cantilever beam, etc., wherein, the transverse beam is added with a cantilever, a rotating shaft, and a safety pin, the cantilever is installed on the transverse beam and is fixed by the rotating shaft and the safety pin, the pressure roller shaft is installed on the cantilever, and the pressure roller is installed on the pressure roller shaft. The recoiler hold down device of the cold rolled steel strip mill is supported by the cantilever beam and is arranged on the recoiler of the cold rolled steel strip mill. The utility model has the advantages of reasonable structure, high safety, material saving, and high production efficiency. The utility model can be used for reforming an original rolling machine, can be used for a new designed rolling machine.

Description

The coiling machine hold down gag of rolling mill for cold rolled steel strip

The utility model belongs to the coiling machine field of rolling mill for cold rolled steel strip, specifically is a kind of coiling machine hold down gag of rolling mill for cold rolled steel strip.

The coiling machine of rolling mill for cold rolled steel strip unload the volume before in order to prevent that loose winding is equipped with various forms of hold down gags, this device itself is by reservoir, compositions such as pressure roller, hang support by cantilever beam, be placed on the coiling machine of rolling mill for cold rolled steel strip, because pressure roller and coil of strip are circles and justify that to contact its stability bad, easily deflection, and reservoir has very big pressure, pressure roller deflection when pressure roller compresses, make cantilever beam and crossbeam bear very big power, and make its flexural deformation, cantilever beam is structural member, and length is long, the distortion back is difficult to repair, only scrap, the cantilever beam that more renews not only influences the milling train production operational availability and also causes very big economic loss.In addition, crossbeam causes the reservoir lifting malfunctioning because the deflection of hold down gag pressure roller also can deform, and hold down gag is ineffective.

The utility model is exactly that coiling machine hold down gag pressure roller deflection according to cold-strip mill causes cantilever beam, the diastrophic problem of crossbeam that a kind of coiling machine hold down gag that has the rolling mill for cold rolled steel strip of rotating shaft and safety pin is provided.

The utility model is to realize like this, it is made up of reservoir, crossbeam, cantilever beam, pressure roller, pressure roller shaft etc., the coiling machine hold down gag that rolls strip mill is to be supported by cantilever beam, be placed on the coiling machine of rolling mill for cold rolled steel strip, its feature is: add a cantilever and rotating shaft and safety pin on crossbeam, cantilever is positioned on the crossbeam, is fixed by rotating shaft and safety pin, pressure roller shaft is positioned on the cantilever, and pressure roller is positioned on the pressure roller shaft.When pressure roller departs from, when active force was big, safety pin is fracture earlier, worked to protect cantilever beam and crossbeam.

The utility model makes it when deflecting owing to adopted the coiling machine hold down gag of the rolling mill for cold rolled steel strip that has rotating shaft and safety pin, and active force acts on the safety pin earlier; when surpassing the safety pin holding capacity; safety pin at first damages, the safety of protection cantilever beam and crossbeam, and it is rational in infrastructure; safe and reliable; get final product economical with materials, can enhance productivity again, can be applicable to old modifying rolling mill; also can use when newly designing milling train, having widely, promotion price is worth.

Below in conjunction with accompanying drawing specific embodiment of the utility model is illustrated;

Accompanying drawing 1 is a structural representation of the present utility model

The utility model is by being by reservoir 1 as shown in the figure, crossbeam 2, cantilever beam 3, pressure roller 4, pressure roller shaft 5 compositions such as grade, the hold down gag of the coiling machine of rolling mill for cold rolled steel strip is to be supported by cantilever beam 3, be placed on the coiling machine of rolling mill for cold rolled steel strip, because cantilever beam 3 is structural members, length is long, and when coiling machine was worked, coil of strip rotated, 1 pair of pressure roller 4 of reservoir presses, its stability is bad, easily makes pressure roller leave the coil of strip vertical centre, and active force departs from, cause cantilever beam 3 and crossbeam 2 distortion, for avoiding the generation of above-mentioned phenomenon, on crossbeam 2, add a cantilever 12 and rotating shaft 10 and safety pin 11, cantilever 12 is positioned on the crossbeam 2, fix by rotating shaft 10 and safety pin, pressure roller shaft 5 is positioned on the cantilever 12, and pressure roller 4 is positioned on the pressure roller shaft 5, like this, when pressure roller 4 departs from, when being subjected to very big side force, the safety pin 11 that at first stressed is on the cantilever beam, power reach can make crossbeam 2 and cantilever beam 3 distortion before, crossbeam 2 and cantilever beam 3 distortion have been avoided in safety pin 11 fracture earlier.When recovering to use, reservoir 1 is mentioned pressure roller 4, because rotating shaft 10 is arranged, cantilever 12 and pressure roller 4 gravitates are free plumbness, can reinstall safety pin 11, recovers operate as normal, and it is saved time and material simply, fast, increases work efficiency.

Adopting safety pin 11 protection cantilever beams and crossbeam is simple and easy and effective measures; its safe diameter can be selected according to the crossbeam 2 and cantilever beam 3 stress deformations of reservoir pressure and hold down gag; the length ratio of 12 length of hanging oneself from a beam and safety pin pitch-row pressure roller shaft can calculate according to the stress deformation of cantilever, and the diameter of pressure roller can be decided according to pressure, the length of cantilever, the force analysis of reservoir 1.With  500/  300 * 1700mm reversible mill is example, and the jib-length of coiling machine hold down gag is 5: 3 with the length ratio of safety pin pitch-row pressure roller shaft, and the diameter of safety pin is 28～33mm, and the diameter of pressure roller is 240～250mm.

Owing to adopted cantilever 12, safety pin 11, rotating shaft 10, can adopt the pressure roller 4 of band inner bearing 14, get for original bearing housing the structure of the hold down gag of the coiling machine of simplification rolling mill for cold rolled steel strip.

Claims

1, a kind of coiling machine hold down gag of rolling mill for cold rolled steel strip, form by reservoir (1), crossbeam (2), cantilever beam (3), pressure roller (4), pressure roller shaft (5), the coiling machine hold down gag of rolling mill for cold rolled steel strip is to be supported on the coiling machine that is placed on rolling mill for cold rolled steel strip by cantilever beam (3), it is characterized in that: on crossbeam (2), add a cantilever (12) and rotating shaft (10) and safety pin (11), cantilever (12) is positioned on the crossbeam (2), fixing by rotating shaft (10) and safety pin (11), pressure roller shaft (5) is positioned on the cantilever (12), and pressure roller (4) is positioned on the pressure roller shaft (5).