Ladle structure for hot repair with small pit distance and cover

Abstract

The present invention and a ladle structure for hot repair with a small pit spacing and a cover include a ladle body and a ladle cover, wherein the ladle body is arranged in a ladle tilting hot repair pit and driven to rotate by a ladle tilting platform, and a tilting hook is arranged on the ladle body; the ladle body rotates rightward for slag removal, and the ladle body rotates leftward for hot repair, that is, the hot repair rotation direction of the ladle body is opposite to the slag removal rotation direction; a left hinge shaft and a right hinge shaft are arranged at the opening of the ladle body, and the ladle cover is provided with a left hook and a right hook respectively matched with the left hinge shaft and the right hinge shaft; when the ladle body rotates rightward, the ladle cover is opened by the left hook and the left hinge shaft; when the ladle body rotates leftward, the ladle cover is opened by the right hook and the right hinge shaft. This structure is not only safe and reliable to use, and has convenient refractory material inspection and slag removal functions, but also can reduce the labor intensity of hot repair of the ladle when the rotation direction of hot repair of the ladle is opposite to the slag removal direction.

Description

Technical Field

[0001] The invention relates to a ladle structure for hot repair with a cover at a small pit distance, belonging to the technical field of hot repair of ladle in steelmaking process. Background Art

[0002] In order to reduce energy consumption, steel mills gradually began to use the full ladle capping technology. The application of this new technology has a great impact on the original ladle tipping hot repair process, because the direction of the casting slag is the running channel of the ladle hoisting crane in the span. If the hot repair personnel's main operating range is in the direction of the casting slag, it is not conducive to ensuring the personal safety of the hot repair personnel. Therefore, the hot repair and casting slag pouring directions of the ladle tilting platform using the full ladle capping technology are often opposite.

[0003] However, when the ladle rotation direction is opposite to the slag pouring direction, the covered ladle cannot be properly hot-repaired. The main problems are: (1) When the original pit layout of the ladle remains unchanged, there is insufficient space for the covered ladle to tip, that is, when the ladle tipping direction is opposite to the slag pouring direction, the covered ladle cannot be tipped. (2) The ladle hot-repair requires opening the ladle cover to check the condition of the refractory in the ladle, and the original pit space is not enough to open the covered ladle.

[0004] In this regard, some steel mills have to use special equipment to uncover the ladle cover at the hot repair position, and cannot achieve hot repair of the ladle with the cover. Therefore, it is necessary to design a ladle structure that can achieve hot repair of the ladle with the ladle cover under the original hot repair conditions. Summary of the invention

[0005] The purpose of the present invention is to provide a ladle structure which is safe and reliable to use, has convenient refractory material inspection and slag pouring functions and can reduce the labor intensity of hot repair of the ladle.

[0006] In order to solve the above technical problems, the technical solution proposed in the present invention is: a ladle structure for hot repair with a cover for small pit spacing, comprising a ladle body and a ladle cover, the ladle body being arranged in a ladle tilting hot repair pit and driven to rotate by a ladle tilting platform, the ladle body being provided with a tilting hook; the ladle body is rotated to the right for slag discharge, and the ladle body is rotated to the left for hot repair, that is, the hot repair rotation direction of the ladle body is opposite to the slag discharge rotation direction; a left hinge shaft and a right hinge shaft are arranged at the opening of the ladle body, and the ladle cover is provided with a left hook and a right hook respectively cooperating with the left hinge shaft and the right hinge shaft; when the ladle body rotates to the right, the ladle cover is opened by the cooperation and rotation of the left hook and the left hinge shaft; when the ladle body rotates to the left, the ladle cover is opened by the cooperation and rotation of the right hook and the right hinge shaft.

[0007] Preferably, the left hinge shaft and the right hinge shaft are each in two groups, and correspondingly, the left hook and the right hook are each in two groups.

[0008] It should be noted that: according to the process requirements of hot repair, the ladle needs to check the refractory and the slag after the dumping slide is cleaned, so the ladle cover needs to be opened during hot repair. When the present invention is implemented, the structure and size of the left and right hinge shafts need to adapt to the slag thickness of the ladle edge, and they need not interfere with each other, so that the function of dumping the ladle slag and opening the ladle cover in two directions during hot repair can be well realized through the four-hinge shaft solution.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1) In the present invention, the rotation direction of the ladle for slag dumping is opposite to that of the hot repair, and the hot repair position is arranged on the opposite side of the running channel of the crane in the span, avoiding the running channel for receiving the ladle hoisted by the crane in the span, thereby improving the safety of the operators and reducing the potential safety hazards.

[0011] 2) The four-hinge scheme arranged on the ladle cover in the present invention realizes bidirectional turning of the ladle body without the need for other equipment to open the cover or manual intervention, which well ensures that the ladle will not fall off during slag pouring and hot repair, and can realize automatic cover opening, thereby improving work efficiency and reliability.

[0012] 3) Under the condition of reverse tipping of the ladle during hot repair, the contradictory functional requirements of heat preservation during hot repair with cover and opening the cover to inspect refractory materials and pour slag are achieved. The present invention solves the above-mentioned contradictory problems by controlling the tipping of the hot repair at a certain angle and opening the ladle cover at a certain angle, avoiding the temperature loss in the ladle caused by the hot repair opening scheme, thereby satisfying the functions of observing refractory materials and pouring slag from the bottom of the ladle. The present invention can achieve a flip of more than 120 degrees during hot repair of the ladle, and can partially open the ladle with cover, so as to inspect the refractory materials in the ladle and clean the slag in the ladle.

[0013] A further improvement of the above technical solution is that: the left hook and the right hook are both V-shaped hooks, and a left locking tongue inserted into the left hook and slidable is provided at the V-shaped opening of the left hook, and a right locking tongue inserted into the right hook and slidable is provided at the V-shaped opening of the right hook; when the ladle body rotates to the left by more than 45°, the right locking tongue extends out under the action of gravity, locks the right hook on the right hinge shaft, and at the same time, the left locking tongue retracts under the action of gravity, releasing the left locking tongue from the left hinge shaft; when the ladle body rotates to the right by more than 45°, the left locking tongue extends out under the action of gravity, locks the left hook on the left hinge shaft, and at the same time, the right locking tongue retracts under the action of gravity, releasing the right locking tongue from the right hinge shaft.

[0014] A further improvement of the above technical solution is: it also includes a ladle cover guide track arranged on the left side wall of the ladle tilting hot repair pit, the ladle cover guide track extends from top to bottom, and the ladle cover is provided with a guide bracket matching the ladle cover guide track. This is because according to the process requirements of hot repair, the ladle needs to check the refractory and the slag cleaned by the inverted slide, and the ladle cover needs to be opened during hot repair of the ladle. However, due to the depth and width limitations of the existing design of the ladle tilting hot repair pit, the existing ladle tilting platform cannot realize the ladle cover opening and rotating 180°. In this regard, the applicant set up a ladle cover guide track on the left side of the ladle tilting hot repair pit. By cooperating with the guide bracket on the ladle cover, the guide design increases the ladle hot repair tilting angle, avoiding large-scale modification of the hot repair pit. The ladle cover can generally achieve a flip of more than 120 degrees, and can be protected and interlocked by the locking pin to limit the rotation angle, so that the ladle with the cover is partially opened, so that the opening angle of the ladle cover during the hot repair tilting process can meet the function of observing the refractory and the ladle bottom slag (steel slag after the pouring slide is cleaned). In addition, the appropriate guide device also reduces the height and width of the ladle tilting hot repair pit, reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the ladle body tilting 130 degrees to the right to pour slag.

[0017] Figure 2 This is a schematic diagram of the ladle body at 0 degrees hot repair standby

[0018] Figure 3 This is a schematic diagram of the ladle body tilting 90 degrees to the left for hot repair.

[0019] Figure 4 It is a schematic diagram of slag pouring when the ladle body tilts to the left at 130 degrees for hot repair.

[0020] Figure numerals: 1-slag basin, 2-ladle cover, 3-left hinge shaft, 4-right hinge shaft, 5-left hook, 6-ladle body, 7-right hook, 8-ladle tilting platform, 9-ladle cover guide rail, 10-guide bracket, 11-ladle tilting hot repair pit, 12-locking pin, 13-tipping hook, 14-hot repair trolley, 15-left locking tongue, 16-crane auxiliary lifting hook, 17-crane main lifting plate hook. DETAILED DESCRIPTION

[0021] Embodiment 1

[0022] like Figure 1-4As shown, the ladle structure for hot repair with a small pit spacing and a cover of this embodiment comprises a ladle body 6 and a ladle cover 2, the ladle body 6 is provided with a tilting hook 13, the ladle body 6 is arranged in a ladle tilting hot repair pit 11 and is driven to rotate by a ladle tilting platform 8, the ladle body 6 rotates right for slag discharge, and the ladle body 6 rotates left for hot repair, that is, the hot repair rotation direction of the ladle body 6 is opposite to the slag discharge rotation direction; the ladle body 6 is provided with a left hinge shaft 3 and a right hinge shaft 4 at the opening, and the ladle cover 2 is provided with a left hook 5 and a right hook 7 which respectively cooperate with the left hinge shaft 3 and the right hinge shaft 4.

[0023] Preferably, the left hinge shaft 3 and the right hinge shaft 4 in this embodiment are each in two groups, and correspondingly, the left hook 5 and the right hook 7 are each in two groups. In this embodiment, the left hook 5 and the right hook 7 are both V-shaped hooks, and the V-shaped opening of the left hook 5 is provided with a left locking tongue 15 that is inserted into the left hook 5 and can slide, and the V-shaped opening of the right hook 7 is provided with a right locking tongue that is inserted into the right hook and can slide. When the ladle body rotates to the left by more than 45°, the right locking tongue extends out under the action of gravity, locking the right hook on the right hinge shaft, and at the same time, the left locking tongue retracts under the action of gravity, releasing the left locking tongue and the left hinge shaft.

[0024] like Figure 1 As shown, when the ladle body 6 rotates to the right to discharge slag, the main hoisting hook 17 of the crane suspends the ladle body 6, and the auxiliary hoisting hook 16 of the crane pulls the tipping hook 13 to rotate the ladle body 6 to the right. At this time, the two left hinge shafts 3 cooperate with the V-shaped left hook 5 on the corresponding ladle cover 2. After the ladle body 6 rotates to the right by more than 45°, the left locking tongue extends under the action of gravity, locking the left hook on the left hinge shaft. At the same time, the right locking tongue retracts under the action of gravity, releasing the right locking tongue and the right hinge shaft. The ladle cover 2 will remain in a vertical state due to its own weight. When the ladle body 6 tilts more than 90°, the ladle cover 2 automatically opens to realize slag discharge with the cover.

[0025] like Figure 2 As shown, before the hot repair process of the ladle cover, the ladle body is manually locked with the locking pin 12 in advance, and the ladle 6 with cover is firmly seated and locked on the ladle tilting platform 8 at a 0° angle.

[0026] like Figure 3 and Figure 4 As shown, during the hot repair process, the tilting frame of the ladle tilting platform 8 rotates from right to left with the ladle body 6, and when it stops at 90°, the hot repair trolley 14 drives northward to a position close to the ladle body, and the workers repair the ladle slide. When the slag pouring tilting angle is greater than 90° and reaches the state of 130°, the right hinge shaft 4 cooperates with the corresponding right hook on the ladle cover 2 to hang the ladle cover 2, and the ladle cover 2 is initially opened according to its gravity. During the opening process of the ladle cover 2, the two left hinge shafts 3 of the ladle have no interference with the corresponding V-shaped openings on the ladle cover 2.

[0027] The present embodiment can also be improved as follows: a ladle cover guide track 9 is added to the left side wall of the ladle tilting hot repair pit 11, the ladle cover guide track 9 extends from top to bottom, and a guide bracket 10 matching the ladle cover guide track 9 is provided on the ladle cover 2. Due to the depth and left and right restrictions of the ladle tilting hot repair pit 11 often existing in the existing design, a ladle tilting ladle cover guide track 9 is provided on the left side of the ladle tilting hot repair pit 11, and by matching with the guide bracket 10 on the ladle cover 2, the ladle body 6 tilting and the opening angle of the ladle cover 2 during the hot repair tilting process meet the functions of observing the refractory and the slag pouring from the ladle bottom.

[0028] In addition, in order to prevent the ladle body 6 from being thrown out during the hot repair tilting process, a locking pin 12 is specially designed on the ladle body 6, which automatically locks and loosens the tilting hook assembly using its own weight, reducing the labor consumption of manually inserting the locking pin.

[0029] The present invention is not limited to the specific technical solutions of the above embodiments. In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A ladle structure for hot repair with a small pit spacing and a cover, comprising a ladle body and a ladle cover, wherein the ladle body is arranged in a ladle tilting hot repair pit and driven to rotate by a ladle tilting platform, and a tilting hook is arranged on the ladle body; characterized in that: The ladle body rotates rightward for slag discharge, and rotates leftward for thermal repair, that is, the rotation direction of the ladle body for thermal repair is opposite to the rotation direction of slag discharge; the opening of the ladle body is provided with a left hinge shaft and a right hinge shaft, and the ladle cover is provided with a left hook and a right hook respectively matched with the left hinge shaft and the right hinge shaft; when the ladle body rotates rightward, the ladle cover is opened by the cooperation and rotation of the left hook and the left hinge shaft; when the ladle body rotates leftward, the ladle cover is opened by the cooperation and rotation of the right hook and the right hinge shaft; It also includes a ladle cover guide track arranged on the left side wall of the ladle tilting hot repair pit, the ladle cover guide track extends downward from the upper side to form a slope surface that gradually shrinks toward the ladle tilting hot repair pit, and the ladle cover is provided with a guide bracket that cooperates with the ladle cover guide track.

2. The ladle structure for hot repairing with a small pit spacing with a cover according to claim 1 is characterized in that: The left hook and the right hook are both V-shaped hooks, the V-shaped opening of the left hook is provided with a left locking tongue which is inserted into the left hook and can slide, and the V-shaped opening of the right hook is provided with a right locking tongue which is inserted into the right hook and can slide; When the ladle body rotates to the left by more than 45°, the right locking tongue extends under the action of gravity, locking the right hook on the right hinge shaft, and at the same time, the left locking tongue retracts under the action of gravity, releasing the left locking tongue and the left hinge shaft; When the ladle body rotates to the right by more than 45°, the left locking tongue extends under the action of gravity to lock the left hook on the left hinge shaft. At the same time, the right locking tongue retracts under the action of gravity to release the right locking tongue and the right hinge shaft.

3. The ladle structure for hot repairing with a small pit spacing with a cover according to claim 1 is characterized in that: Also included is a locking pin for locking the tipping hook.

4. The ladle structure for hot repairing with a small pit spacing with a cover according to claim 1 is characterized in that: The left hinge shaft and the right hinge shaft each have two groups, and correspondingly, the left hook and the right hook each have two groups.

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