CN209239004U - A kind of continuous casting walking cooling bank - Google Patents

Abstract

The utility model relates to a kind of continuous casting walking cooling banks, belong to metallurgy industry continuous casting installation for casting technical field.Technical solution is: including multiple spaced apart stationary racks (5) and movable rack (6), movable rack (6) is supported by movable frame, stationary rack (6) is fixed on fixed tooth column (8) by fixed tooth support (7), movable frame includes main beam in frame and the cruciform bracing (1) being located on main beam in frame, it is characterized by: a transition seat (4) is arranged on the cruciform bracing (1) of movable frame, movable rack (6) is fixed on movable tooth support (3), movable tooth support (3) is fixed on transition seat (4) by movable tooth bracket (11), between movable tooth bracket (11) and transition seat (4) and fixed tooth support (7) two sides are equipped with stiffener plate (10).The beneficial effects of the utility model are: can be avoided cold bed situations such as deformation, rack gear fracture occurs, meet the production requirement of continuous production big cross section slab.

Description

A continuous casting step-and-turn cooling bed

technical field

The utility model relates to a step-by-step flip cooling bed for continuous casting, which belongs to the technical field of continuous casting equipment in the metallurgical industry.

Background technique

After the billet of the continuous casting machine is solidified and crystallized by the crystallizer, continuously straightened by the tension leveler, and cut to length, it enters the stepping and turning cooling bed for cooling and leveling.

The step-and-flip cooling bed is mainly composed of two parts: a movable rack and a fixed rack. The movable rack is supported by a movable frame, the fixed rack is supported by a column fixed on the foundation platform, and the movable frame is composed of two beams, a frame beam and a fixed rack. The beam is composed of columns on the frame beam, and the beam is divided into a fixed side beam and a free side beam. The lifting of the movable frame adopts the form of direct lifting of four hydraulic cylinders, and the lateral movement of the movable frame adopts a sliding guide installed on the fixed side beam and two A hydraulic cylinder pushes the translation form. The lifting synchronous mechanism of the movable frame adopts quadruple synchronous motors, and the translation synchronous mechanism adopts double synchronous motors to realize.

When the step-and-turn cooling bed is working, the movable frame is driven by four lifting hydraulic cylinders to rise and hold up the movable rack fixed on the frame beam to lift the billet and move forward a set stroke, and then the movable frame descends. Place the strand on the fixed rack again. Afterwards, the movable frame continues to descend to a low position lower than the fixed rack, and moves back a set stroke to reach the initial waiting position, ready for the next stepping action. The casting slab follows the steps of the reversing cooling bed, and pushes the slabs on the reversing cooling bed to the collection platform by moving the steel horizontally. After a certain amount is stored, it is lifted away by the billet spreader. The step-and-turn cooling bed is also equipped with spray water facilities for cooling the slab. The whole system realizes the continuous cooling, turning, leveling and storage of the slab.

The billet specifications mainly include: 150*150, 165*165, 165*225, 285*200. Due to the large section of the 285*200 billet, the weight of a single billet is 2.5 times that of the 150 billet, resulting in long-term overloading of the cooling bed and other equipment. Running, resulting in serious deformation of the cooling bed, broken frame beams, broken racks, and frequent damage to hydraulic cylinders. It takes 8-10 hours to overhaul each time before the next step of production can be barely carried out. The damage to the equipment is large, the labor intensity of the workers is high, and the cost High, casting machine operating rate is low. The overall frame of the cooling bed system is seriously deformed, and the daily maintenance investment is large, which restricts the production obviously. The main performance is as follows:

1) Due to the existence of the turning machine, the elevation of the existing cooling bed needs to be the same as that of the turning rail, resulting in a high column of the cooling bed, which is easily deformed and overturned. After the production of 200×285mm, the cooling bed needs to be adjusted for a long time. and welding reinforcement;

2) The design distance between the movable rack and the fixed rack of the existing cooling bed is close, resulting in no rib plates on both sides of the rack seat, and the rack seat is easy to fork and deform. After the rack seat is deformed, the fixed rack cannot be fixed, resulting in The overturning aggravates the bending deformation of the rack, and the deformation and bending of the rack further affect the stability of the cooling bed column and the cooling bed frame;

3) The design of the existing cooling bed column and rack seat is thin. The original design of the column is made of 200 channel steel butt welding. The side plate of the rack seat has no rib plate, which has poor bearing capacity. root.

4) Since the overall frame of the cooling bed has been deformed and lost its stability, the amount of daily maintenance is relatively large, mainly manifested in:

(1) The movable frame of the cooling bed is offset, the side copper slider consumes a lot, and there is scratching between the movable frame and the fixed teeth;

(2) The frame columns are frequently welded and strengthened, and the welding performance is poor. After the frame is welded and shifted, it takes a long time to repair and repair;

(3) The frame is unevenly stressed, and the local stress is large, which causes the main beam on the free side to open and break due to welding.

Utility model content

The purpose of the utility model is to provide a step-by-step turning cooling bed for continuous casting, which can avoid deformation and rack breakage in the production process, and solve the problems existing in the background technology.

The technical scheme of the utility model is:

A step-by-step flipping cooling bed for continuous casting, which includes a plurality of fixed racks and movable racks arranged at intervals, the movable rack is supported by a movable frame, the fixed rack is fixed on a fixed-tooth column through a fixed-tooth support, and the movable frame includes The main beam of the frame and the frame beam on the main beam of the frame, a transition seat is set on the frame beam of the movable frame, the movable rack is fixed on the movable tooth support, and the movable tooth support is fixed on the transition seat through the movable tooth bracket , There are reinforcing ribs between the movable tooth bracket and the transition seat and on both sides of the fixed tooth support.

An adjustment backing plate is provided between the movable tooth support and the movable tooth bracket.

The transition seat is fixed on the frame beam of the movable frame by bolts.

The frame beams of the movable frame are fixedly connected with the main frame beams through dovetail groove panels.

The fixed tooth column is made of square steel pipe.

The innovation of the utility model is:

(1) Add a transition seat on the frame beam to increase the stability of the movable frame;

(2) Optimize the distance between the movable rack and the fixed rack, and add ribs between the movable rack and the transition seat to effectively prevent the movable rack from toppling over, ensure the stability of the movable rack, and at the same time make the lifting cylinder suffer Force replacement is reasonable;

3) The active rack cancels the column and reduces the components;

4) The fixed tooth column is made of channel steel butt welding instead of square steel pipe, and ribs are added on both sides of the fixed tooth support to effectively prevent the fixed rack from tipping over and ensure the stability of the fixed rack.

5) The copper sliding plate of the frame beam is changed from bolt connection to slot-shaped plug connection, which is easy to replace and improves wear resistance.

The beneficial effects of the utility model are: it can avoid the deformation of the cooling bed, the fracture of the frame beam, the fracture of the rack, the frequent damage of the hydraulic cylinder, etc., meet the production requirements of continuous production of large-section billets, reduce the occurrence of equipment accidents, and effectively improve the quality of the casting machine. The operating rate is improved, and the labor intensity of maintenance workers is reduced at the same time.

Description of drawings

Fig. 1 is the assembly top view of movable crossbeam of the present utility model;

Fig. 2 is the front view of the movable beam assembly of the utility model;

Fig. 3 is the assembly front view of the utility model;

Figure 4 is a schematic diagram of the assembly of the utility model transition seat;

Fig. 5 is the front view of the panel assembly of the utility model dovetail groove;

Figure 6 is a side view of the utility model dovetail groove panel assembly;

In the figure: 1. frame beam; 2. movable tooth beam; 3. movable tooth support; 4. transition seat; 5. fixed rack; 6. movable rack; 7. fixed tooth support; 8. fixed tooth column ;9. Adjusting backing plate; 10. Rib plate; 11. Movable tooth bracket; 12. Rib plate; 13. Dovetail groove panel; 14. Hoisting hole;

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described by example.

Referring to accompanying drawings 1 to 6, a continuous casting step-by-step turning cooling bed includes a plurality of fixed racks 5 and movable racks 6 arranged at intervals, the movable rack 6 is supported by a movable frame, and the fixed rack 5 passes through the fixed rack The seat 7 is fixed on the fixed tooth column 8, the movable frame includes the frame main beam and the frame beam 1 arranged on the frame main beam, a transition seat 4 is set on the frame beam 1 of the movable frame, and the movable rack 6 is fixed on the movable tooth On the support 3 , the movable tooth support 3 is fixed on the transition seat 4 through the movable tooth support 11 , and reinforcing ribs 10 are provided between the movable tooth support 11 and the transition seat 4 and on both sides of the fixed tooth support 7 .

Specific examples:

In this embodiment, with reference to accompanying drawings 1, 2, and 3, under the condition of keeping the height of the addendum constant, a transition 4 is added to the frame beam and the top, which effectively improves the rigidity of the movable frame;

The distance between the fixed rack 5 and the movable rack 6 is increased, and rib plates 10 are added to the side plates on both sides of the rack seat, so that the force replacement of the lifting cylinder is reasonable and the operation is stable.

Referring to accompanying drawing 4, movable rack 6 is fixed on the movable tooth support 3, and movable tooth support 3 is fixed on the transition seat 4 through movable tooth support 11, is provided with adjustment between movable tooth support 3 and movable tooth support 11. A reinforcing rib plate 10 is provided between the backing plate 9 , the movable tooth bracket 11 and the transition seat 4 .

Referring to accompanying drawings 5 and 6, the dovetail groove panel 13 of the fixed side beam is fixed on the girder by welding with the rib plate 12, the dovetail groove 15 is fixed on the panel 13 by hexagon socket countersunk bolts, and the copper sliding plate 16 is directly inserted into the dovetail groove. And the copper slide plate is fixed in the groove with the pressing plate 14 of dovetail groove. While increasing the rigidity of the base, the overall size of the copper slide plate is increased to increase the contact area, thereby increasing the wear resistance. After changing to the dovetail slot form, it can be replaced in a short period of maintenance, so as to ensure the reliability and effectiveness of the copper slide plate and the overall stability of the cooling bed.

The fixed tooth column 8 is made by channel steel butt welding instead of a square steel pipe, and ribs are added on both sides of the fixed tooth support 8 to effectively prevent the fixed rack from toppling over and ensure the stability of the fixed rack.

Claims (5)

1. a kind of continuous casting walking cooling bank includes multiple spaced apart stationary racks (5) and movable rack (6), movable teeth Item (6) is supported by movable frame, and stationary rack (5) is fixed on fixed tooth column (8) by fixed tooth support (7), movable frame packet Containing main beam in frame and the cruciform bracing (1) being located on main beam in frame, it is characterised in that: on the cruciform bracing (1) of movable frame One transition seat (4) is set, and movable rack (6) is fixed on movable tooth support (3), and movable tooth support (3) passes through movable tooth bracket (11) It is fixed on transition seat (4), between movable tooth bracket (11) and transition seat (4) and fixed tooth support (7) two sides are equipped with reinforcing rib Plate (10).

2. a kind of continuous casting walking cooling bank according to claim 1, it is characterised in that the movable tooth support (3) and movable tooth Adjustment pad (9) are equipped between bracket (11).

3. a kind of continuous casting walking cooling bank according to claim 1 or 2, it is characterised in that the transition seat (4) passes through Bolt is fixed on the cruciform bracing (1) of movable frame.

4. a kind of continuous casting walking cooling bank according to claim 1, it is characterised in that the frame of the movable frame is horizontal Beam (1) is fixedly connected with main beam in frame by dovetail chute panel (13).

5. a kind of continuous casting walking cooling bank according to claim 1, it is characterised in that the fixed tooth column (8) is square steel Pipe production.