CN102615261A

CN102615261A - Return prevention device for step-by-step steel pushing cooling bed

Info

Publication number: CN102615261A
Application number: CN201210083449XA
Authority: CN
Inventors: 江浪
Original assignee: Zhongye Continuous Casting Technology Engineering Co Ltd
Current assignee: Zhongye Continuous Casting Technology Engineering Co Ltd
Priority date: 2012-03-27
Filing date: 2012-03-27
Publication date: 2012-08-01
Anticipated expiration: 2032-03-27
Also published as: CN102615261B

Abstract

The invention relates to a return prevention device for a step-by-step steel pushing cooling bed, in particular to a casting blank return prevention device. A casting blank return prevention mechanism for the step-by-step steel pushing cooling bed mainly comprises a return prevention plate with parts in irregular geometric shapes, and the problem that a pawl of the step-by-step steel pushing cooling bed drives a casting blank on the cooling bed to return together when returning is solved.

Description

A kind ofly be used for the anti-unloading device that stepping pushes away the steel cold bed

Technical field

The present invention relates to a kind of anti-unloading device that stepping pushes away the steel cold bed that is used for, the spy relates to the anti-unloading device of strand.

Background technology

Imperative equipment in the cold bed side of being, the round billet continuous casting machine knockout system, commonly used at present mainly contains two types: stepping turn over cooling bed, stepping push away the steel cold bed.Stepping turn over cooling bed equipment is huge, and cost is higher, only when producing the strict long scale strand of strand glacing flatness and chilling temperature, just adopts.Therefore stepping pushes away the equipment that the steel cold bed side of being, round billet continuous casting machine knockout system use always.Stepping pushes away the steel cold bed and mainly partly is made up of oil cylinder, linkage, travelling car, pusher dog, strand rail system etc.; Its operation principle is: reciprocating oil cylinder makes travelling car move back and forth through linkage; Thereby make corresponding the making of pusher dog that is installed on the travelling car push away steel, return period sexual act; Whenever carry out one-period, the strand fixing distance (referring to Fig. 1, Fig. 2) that moves forward.But when returning, pusher dog needs below strand, to withdraw from, and strand is had a thrust backward, and this moment, strand only relied on frictional force to resist this thrust; Therefore in frictional force during less than thrust, pusher dog will be with strand to return together, influences the operate as normal that stepping pushes away the steel cold bed.

Stepping at present pushes away the steel cold bed does not have anti-back mechanism, solves pusher dog and takes back the method for strand phenomenon and have two kinds: 1, improve the geometry on pusher dog top, when reducing pusher dog and returning to the thrust of strand; 2, process circular groove in orbit, increase the resistance (being used for the round billet continuous casting machine) that large round billet rolls and returns.

Improve geometry and can only reduce thrust limitedly, method 1 can only alleviate, can not thoroughly eliminate the phenomenon that pusher dog is taken back strand, particularly for the very little round base of frictional force.Method 2 only is applicable to the round billet continuous casting machine, can not adapt to the conticaster of billet caster and side, circle dual-purpose; And if the groove on the track is too dark, can increase pusher dog and push away the steel resistance in when action, so this method can not be thoroughly eliminated the phenomenon that pusher dog is taken back strand.

Summary of the invention

The present invention is directed to the deficiency of prior art, the strand anti-back mechanism that provides a kind of stepping to push away the steel cold bed is used to solve the pusher dog that stepping pushes away the steel cold bed and when returning, drives the problem that the strand on the cold bed is return together.

Technical scheme of the present invention is: a kind of stepping pushes away the anti-unloading device of steel cold bed; By anti-back plate, spacer ring, axle, end plate, packing ring, split pin and form; Axle is the multidiameter that has pin-and-hole, and it is characterized in that: the anti-back plate is the geometry irregular part, and the anti-back plate has the circular hole that matches with axle; And circular hole is not on the geometric center of anti-back plate; The anti-back plate is installed on the axle through this circular hole, and the anti-back plate withstands on the shaft shoulder through spacer ring at an axial end, and the other end carries out axial location through packing ring and split pin.Its beneficial effect is: this apparatus structure is simple, and cost is low; This device is reliable, can thoroughly eliminate the phenomenon that pusher dog is taken back strand.This device is installed on the track girder that stepping pushes away the steel cold bed; When pushing away steel, the anti-back plate of this device rotates and dodges strand, and strand advances smoothly; When returning, the anti-back plate goes back to and ends plate one and works and withstand strand, prevents that strand from returning.

Aforesaid anti-unloading device is characterized in that: it is matched in clearance that said anti-back plate cooperates with the hole axle of axle.Its beneficial effect is: the anti-back plate can freely rotate around axle.

A kind of installation prevents that unloading device pushes away the method on the steel cold bed track girder to stepping, it is characterized in that:

Step 1, the axle that will install the anti-back plate insert a stepping and push away in the hole on the steel cold bed track girder, and the anti-back assembly axis is fixed on the track girder; Step 2, will end plate according to the position of anti-back plate through the mode of welding and be fixed on the track girder.Its beneficial effect is: can install anti-unloading device easily.

The method of the anti-unloading device of aforesaid installation is characterized in that: in the said step 1 fixedly the anti-back assembly axis on track girder, adopt and weld or bolted mode.Its beneficial effect is: can adopt the fixing anti-unloading device of multiple mode.

Description of drawings:

Fig. 1 stepping pushes away steel cold bed course of work sketch map;

Fig. 2 stepping pushes away steel cold bed course of work sketch map;

Fig. 3 anti-back structure drawing of device;

Fig. 4 anti-back structure drawing of device;

Fig. 5 prevents the unloading device installation diagram;

Fig. 6 pushes away anti-unloading device fundamental diagram in the steel course of action;

Anti-unloading device fundamental diagram in Fig. 7 return course.

The specific embodiment

Description of reference numerals:

The explanation of mark among Fig. 3: 1-anti-back plate, 4-ends plate;

The explanation of mark among Fig. 4: 1-anti-back plate, the 2-spacer ring, the 3-axle, 4-ends plate, 5-packing ring, 6-split pin;

The explanation of mark among Fig. 5: the 7-stepping pushes away the track girder of steel cold bed, the 3-axle, and 4-ends plate;

The explanation of mark among Fig. 6: the 8-pusher dog, the 9-strand, 1-anti-back plate, 4-ends plate;

The explanation of mark among Fig. 7: the 8-pusher dog, the 9-strand, 1-anti-back plate, 4-ends plate.

Below in conjunction with accompanying drawing the present invention is further specified:

The static structure of the embodiment of the invention is following:

Referring to Fig. 3 and Fig. 4, the anti-back apparatus structure is simple, by anti-back plate 1, spacer ring 2, axle 3, end plate 4, packing ring 5, split pin 6 and form.Axle 3 is the multidiameters that have pin-and-hole; Anti-back plate 1 is the geometry irregular part, have one with axle 3 circular holes that match, and circular hole is on the geometric center of anti-back plate, i.e. position of centre of gravity.Anti-back plate 1 is installed on the axle 3 through this circular hole; Withstand on through spacer ring 2 on axle 3 shoulders at an axial end, the other end carries out axial location through packing ring 5 and split pin 6.It is matched in clearance that anti-back plate 1 cooperates with the hole axle of axle 3, and anti-back plate 1 can freely rotate around axle 3.

Referring to Fig. 5; To prevent that unloading device is installed to that stepping pushes away on the steel cold bed track girder can be in two steps: step 1, the axle 1 that will install the anti-back plate insert a stepping and push away in the hole on the steel cold bed track girder 7; The axle 3 that to prevent unloading device with the mode of welding is fixed on the track girder, also can adopt bolted mode; Step 2, will end plate 4 according to the position of anti-back plate 1 through the mode of welding and be fixed on the track girder.

The dynamic process of the embodiment of the invention is following:

Referring to Fig. 6, push away steel when action, pusher dog 8 promotes strands 9 and advances, and anti-back plate 1 clockwise rotates under the effect of the power that strand 9 applies, and forwards to dodge below the strand 9.After strand 9 passed through, owing to there is not an external force effect, anti-back plate 1 was rotated counterclockwise under the moment loading that himself gravity produces, and is blocked until ending plate 4, is in erectility (returning to reset condition).

Referring to Fig. 7, during return action, pusher dog 8 withdraws from below strand 9, though strand 9 has received the thrust backward that pusher dog 8 applies, this moment, the anti-back plate 1 of erectility can produce reciprocal active force to strand 9, stop retreating of strand 9, and pusher dog 8 was return smoothly.Than the thrust of 8 pairs of strands 9 of pusher dog, the active force that anti-back plate 1 can produce is bigger, and therefore this mode can thoroughly be eliminated the phenomenon that pusher dog 8 is taken back strand 9.

Claims

1. a stepping pushes away the anti-unloading device of steel cold bed, by anti-back plate, spacer ring, axle, end plate, packing ring, split pin and forms, spool is the multidiameter that has pin-and-hole; It is characterized in that: the anti-back plate is the geometry irregular part; The anti-back plate has and the circular hole that matches of axle, and circular hole is on the geometric center of anti-back plate, and the anti-back plate is installed on the axle through this circular hole; The anti-back plate withstands on the shaft shoulder through spacer ring at an axial end, and the other end carries out axial location through packing ring and split pin.

2. anti-unloading device as claimed in claim 1 is characterized in that: it is matched in clearance that said anti-back plate cooperates with the hole axle of axle.

3. the anti-unloading device of installation pushes away the method on the steel cold bed track girder to stepping, it is characterized in that:

Step 1, the axle that will install the anti-back plate insert a stepping and push away in the hole on the steel cold bed track girder, and the anti-back assembly axis is fixed on the track girder;

Step 2, will end plate according to the position of anti-back plate through the mode of welding and be fixed on the track girder.

4. the method for the anti-unloading device of installation as claimed in claim 3 is characterized in that: in the said step 1 fixedly the anti-back assembly axis on track girder, adopt and weld or bolted mode.