CN115846637A - Continuous casting steel ladle cover and replacing method thereof - Google Patents

Abstract

The invention discloses a continuous casting ladle cover and a using method thereof, wherein the continuous casting ladle cover comprises a ladle cover body, a ladle cover retaining ring, a ladle cover movable hook, an inclined strut and a ladle cover safety buckle; the bag cover retaining ring is arranged on the upper surface of the bag cover body; the ladle cover movable hook, the inclined strut and the ladle cover safety buckle are all arranged on the ladle cover buckle ring, the ladle cover movable hook and the inclined strut are located on one side of the ladle cover buckle ring, and the ladle cover safety buckle is located on the other side of the ladle cover buckle ring. The invention solves the problems of complex, long time and high danger of the field large ladle cover replacement operation.

Description

Continuous casting steel ladle cover and replacing method thereof

Technical Field

The invention relates to a ladle cover of a continuous casting rotary table, in particular to a ladle cover of a continuous casting ladle and a replacing method thereof.

Background

The continuous casting ladle cover is an effective means for reducing the temperature loss of the ladle, the frequent use of the ladle cover easily causes the falling of the refractory material and the housing, and the on-site daily production is influenced if the damaged ladle cover is not replaced in time. The existing ladle cover replacement technology and the existing ladle cover replacement process are complex and can be carried out only in a shutdown state, and the exertion of the capacity is seriously influenced.

The online replacement of the continuous casting ladle cover of the existing steel enterprise belongs to first-level high-risk operation, and the replacement operation flow is approximately as follows:

1) The operator needs to hoist the empty ladle to the loading position of the rotary table;

2) An operator transfers the big ladle cover to the upper part of the empty ladle;

3) An operator needs to bring the safety belt above the ladle cover to remove the damaged ladle cover and the connecting pin on the ladle cover swing arm;

4) The operator goes up and down from the ladle cover and rotates the ladle cover swing arm to the middle position;

5) An operator commands the travelling crane to lift off the damaged ladle cover and lift and convey a new ladle cover to the upper part of the empty ladle;

6) An operator rotates the ladle cover swing arm to the position above the empty ladle;

7) An operator brings the safety belt above the ladle cover and well assembles the ladle cover and the connecting pin on the ladle cover swing arm;

8) The operator comes from the ladle cover from top to bottom, rotates the ladle cover swing arm to the intermediate position, commands the driving simultaneously and hangs the air ladle and leaves, and whole change operation is ended.

The whole replacement operation is basically carried out for about 30-45 min, and meanwhile, the safety risk exists when people frequently wrap up and down and hang and take off the safety belt. When the steel ladle of the rotary table is lifted, the safety accident that the ladle cover falls due to the separation of the ladle cover hook and the ladle cover cantilever hook can be caused in the original design.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a continuous casting ladle cover and a replacing method thereof, and solves the problems of complicated replacing operation, long time and high danger of a large ladle cover on site.

In order to achieve the purpose, the invention adopts the following technical scheme:

on one hand, the continuous casting ladle cover comprises a ladle cover body, a ladle cover snap ring, a ladle cover movable hook, an inclined strut and a ladle cover safety buckle;

the bag cover retaining ring is arranged on the upper surface of the bag cover body;

the ladle cover movable hook, the inclined strut and the ladle cover safety buckle are all arranged on the ladle cover buckle ring, the ladle cover movable hook and the inclined strut are located on one side of the ladle cover buckle ring, and the ladle cover safety buckle is located on the other side of the ladle cover buckle ring.

Preferably, the ladle cover movable hook, the inclined strut and the ladle cover safety buckle are all arranged on the ladle cover retaining ring through a pin shaft.

Preferably, the movable hook of the bag cover and the inclined strut are fixedly connected to form an included angle alpha.

Preferably, the included angle α is 40 degrees.

Preferably, the upper surface of the bag cover body is also provided with a safety buckle positioning block;

the lower end of the safety buckle positioning block is fixed on the upper surface of the bag cover body, and the upper end of the safety buckle positioning block is in contact with the bag cover safety buckle.

Preferably, the weight of the inclined strut is larger than that of the movable hook of the bag cover.

Preferably, the cover buckle ring is arranged at the center of the cover body.

In another aspect, a method for replacing a continuous casting ladle cover includes:

1) Lifting off the continuous casting ladle cover: the ladle cover movable hook is hooked and lifted through the auxiliary hook of the travelling crane, so that the ladle cover retaining ring is separated from the ladle cover cantilever hook, and meanwhile, the ladle cover safety buckle is separated from the ladle cover swing arm;

2) And (3) installing the continuous casting ladle cover: the travelling crane auxiliary hook hooks and lifts the ladle cover movable hook, so that the ladle cover retaining ring is clamped into the ladle cover cantilever hook, and the ladle cover safety buckle is hung on the ladle cover swing arm and positioned by the safety buckle positioning block.

Preferably, the method further comprises the following steps:

1) The worker lifts the cover swing arm to a horizontal position;

2) The worker transfers the continuous casting ladle cover to a crane span position;

3) Operating the auxiliary hook of the travelling crane to enter and hook the ladle cover movable hook to rise, confirming that the ladle cover retaining ring is separated from the ladle cover cantilever hook, and hanging the continuous casting ladle cover down when the travelling crane retreats;

4) A worker operates the auxiliary hook of the travelling crane to hook a new ladle cover of the continuous casting ladle and ascend, confirms that the retaining ring of the ladle cover is clamped into the cantilever hook of the ladle cover, and retreats the travelling crane;

5) And (4) rotating the continuous casting ladle cover to the middle position by a worker, and finishing the replacement operation.

According to the continuous casting ladle cover and the replacing method thereof provided by the invention, the whole cover replacing process is simple, efficient and low in danger through the optimization and improvement on the cover structure, the cover is provided with the anti-falling safety device, the cover replacing operation can be carried out without stopping the machine, the empty ladle can be replaced without lifting to a revolving platform, and an operator does not need to climb to the revolving platform for high-altitude operation, so that the rhythm of the existing efficient production is more adapted.

Drawings

FIG. 1 is a schematic structural view of a continuous casting ladle cover according to the present invention;

FIG. 2 is a schematic top view of FIG. 1;

fig. 3 is a schematic view of a method for replacing a cover of a continuous casting ladle according to the present invention.

Detailed Description

In order to better understand the technical solutions of the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

Referring to fig. 1 and 2, the continuous casting ladle cover provided by the invention is also a continuous casting ladle cover which can be quickly replaced, has no falling risk and is safely replaced, and comprises a cover body 1, a cover retaining ring 2, a cover movable hook 3, an inclined strut 4 and a cover safety buckle 5.

The cover snap ring 2 is welded and fixed at the center of the upper surface of the cover body 1.

The ladle cover movable hook 3, the inclined strut 4 and the ladle cover safety buckle 5 are all installed on the ladle cover buckle ring 2 through pin shafts and can rotate around the pin shafts, the ladle cover movable hook 3 and the inclined strut 4 are located on one side of the ladle cover buckle ring 2, and the ladle cover safety buckle 5 is located on the other side of the ladle cover buckle ring 2.

The ladle cover movable hook 3 and the inclined strut 4 are fixedly connected with each other, an included angle alpha is formed, the included angle alpha is 40 degrees, and the inclined strut 4 can move together with the hoisting of the ladle cover movable hook 3.

The upper surface of the ladle cover body 1 is also provided with a safety buckle positioning block 6, the lower end of the safety buckle positioning block 6 is welded and fixed on the upper surface of the ladle cover body 1, and the upper end of the safety buckle positioning block is in contact with the bottom surface of the ladle cover safety buckle 5 to play a positioning role for the ladle cover safety buckle 5.

As shown in the combined figure 3, when the travelling crane auxiliary hook 7 lifts the ladle cover movable hook 3, the ladle cover safety buckle 5 plays a role in positioning after the ladle cover safety buckle 5 enters the ladle cover swing arm 8 in the ladle cover installation process, so that the ladle cover is prevented from shaking left and right, and meanwhile, after the ladle cover buckle ring 2 enters the ladle cover swing arm hook 9, the ladle cover safety buckle 5 is completely hung on the ladle cover swing arm 8 through the height of the safety buckle positioning block 6. The weight of bracing 4 is greater than the be built by contract movable hook 3, and is fixed connection with be built by contract movable hook 3, withdraws from the back when driving secondary hook 7, and the be built by contract movable hook 3 can freely fall towards the focus direction of bracing 4, makes the be built by contract movable hook 3 can keep at fixed angle (the contained angle alpha of be built by contract movable hook 3 and bracing 4 is at 40 degrees) through bracing 4, and the business turn over of the secondary hook 7 of driving, convenient hoist and mount from now on will be guaranteed to this angle alpha.

The invention also provides a method for replacing the continuous casting ladle cover, which comprises the following steps:

1) Lifting a continuous casting ladle cover: the ladle cover movable hook 3 is hooked and lifted by the auxiliary hook 7 of the travelling crane, so that the ladle cover buckle ring 2 is separated from the ladle cover cantilever hook 9, and the ladle cover safety buckle 5 is separated from the ladle cover swing arm 8;

2) And (3) mounting a continuous casting ladle cover: the ladle cover movable hook 3 is hooked and lifted by the auxiliary hook 7 of the travelling crane, the ladle cover buckle ring 2 is clamped into the ladle cover cantilever hook 9, the ladle cover safety buckle 5 is hung on the ladle cover swing arm 8, and the position between the ladle cover safety buckle 5 and the ladle cover swing arm 8 is positioned by the safety buckle positioning block 6.

The replacement method further comprises the following steps:

1) The worker lifts the ladle cover swing arm 8 to a horizontal position, so that the traveling crane auxiliary hook 7 can conveniently transfer the continuous casting ladle cover to enter and exit;

2) The worker transfers the continuous casting ladle cover to the position of the travelling crane span;

3) Operating the auxiliary hook 7 of the travelling crane to enter and hook the ladle cover movable hook 3 to rise, confirming that the ladle cover retaining ring 2 is separated from the ladle cover cantilever hook 9, and hanging the old continuous casting ladle cover down when the travelling crane retreats;

4) The worker operates the auxiliary hook 7 of the travelling crane to hook a new continuous casting ladle cover and ascend, and confirms that the retaining ring 2 of the ladle cover is clamped into the cantilever hook 9 of the ladle cover, and the travelling crane retreats;

5) And (5) rotating the continuous casting ladle cover to the middle position by the worker, and finishing the replacement operation.

The whole replacing operation only needs about 10-15 min, and meanwhile, the personnel avoid the overhead operation of the upper and lower ladle covers.

The continuous casting ladle cover and the replacing method thereof are more suitable for the high-rhythm production requirement of modern steel works, have good safety and can be popularized on occasions with similar continuous casting rotary table ladle covers.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims (9)

1. A continuous casting ladle is covered which characterized in that: comprises a bag cover body, a bag cover retaining ring, a bag cover movable hook, an inclined strut and a bag cover safety buckle;

the bag cover retaining ring is arranged on the upper surface of the bag cover body;

the ladle cover movable hook, the inclined strut and the ladle cover safety buckle are all arranged on the ladle cover buckle ring, the ladle cover movable hook and the inclined strut are located on one side of the ladle cover buckle ring, and the ladle cover safety buckle is located on the other side of the ladle cover buckle ring.

2. The continuous casting ladle cover according to claim 1, characterized in that: the ladle cover movable hook, the inclined strut and the ladle cover safety buckle are all arranged on the ladle cover retaining ring through a pin shaft.

3. The continuous casting ladle cover according to claim 2, characterized in that: the ladle cover movable hook and the inclined strut are fixedly connected and form an included angle alpha.

4. The continuous casting ladle cover according to claim 3, characterized in that: the included angle alpha is 40 degrees.

5. The continuous casting ladle cover according to claim 1, characterized in that: the upper surface of the bag cover body is also provided with a safety buckle positioning block;

the lower end of the safety buckle positioning block is fixed on the upper surface of the bag cover body, and the upper end of the safety buckle positioning block is in contact with the bag cover safety buckle.

6. The continuous casting ladle cover according to claim 1, characterized in that: the weight of the inclined strut is larger than that of the movable hook of the bag cover.

7. The continuous casting ladle cover according to claim 1, characterized in that: the bag cover retaining ring is arranged at the central position of the bag cover body.

8. A method of replacing a continuous casting ladle cover according to any one of claims 1 to 7, comprising:

1) And (3) lifting the continuous casting ladle cover: the ladle cover movable hook is hooked and lifted through the auxiliary hook of the travelling crane, so that the ladle cover retaining ring is separated from the ladle cover cantilever hook, and meanwhile, the ladle cover safety buckle is separated from the ladle cover swing arm;

2) And (3) installing the continuous casting ladle cover: the travelling crane auxiliary hook hooks and lifts the ladle cover movable hook, so that the ladle cover retaining ring is clamped into the ladle cover cantilever hook, and the ladle cover safety buckle is hung on the ladle cover swing arm and positioned by the safety buckle positioning block.

9. The method for replacing a continuous casting ladle cover according to claim 8, wherein: further comprising the steps of:

1) The worker lifts the cover swing arm to a horizontal position;

2) The worker transfers the continuous casting ladle cover to a crane span position;

3) Operating the auxiliary hook of the travelling crane to enter and hook the ladle cover movable hook to rise, confirming that the ladle cover retaining ring is separated from the ladle cover cantilever hook, and hanging the continuous casting ladle cover down when the travelling crane retreats;

4) A worker operates the auxiliary hook of the travelling crane to hook a new ladle cover of the continuous casting ladle and ascend, confirms that the retaining ring of the ladle cover is clamped into the cantilever hook of the ladle cover, and retreats the travelling crane;

5) And (4) rotating the continuous casting ladle cover to the middle position by a worker, and finishing the replacement operation.

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