Automatic steel ladle correcting device in VD furnace

Abstract

The utility model relates to the technical field of ferrous metallurgy steelmaking, and mainly discloses an automatic correction device for a steel ladle in a VD furnace, which comprises a furnace body of the VD furnace and a saddle main body, the saddle main body comprises a main supporting seat and two positioning seats symmetrically arranged along the central line of the length direction of the main supporting seat, and guide seats are arranged at the tops of the positioning seats. An auxiliary supporting seat is arranged on the inner side of the main supporting seat, positioning slopes are arranged on the inner sides of the two positioning seats, a guiding buffering slope is arranged on the lower portion of the inner side of the guiding seat, a guiding slope is arranged on the upper portion of the inner side of the guiding seat, and the guiding slope, the guiding buffering slope and the positioning slopes are sequentially and coherently connected. Even if the steel ladle inclines by a certain angle, the steel ladle can be straightened under the action of the automatic straightening device, so that the running time of the steel ladle is saved, safety accidents caused by inclination of the steel ladle are eliminated, safe and efficient production is realized, and the steel ladle straightening device has the advantages of simplicity and easiness in design and processing, low manufacturing cost and convenience and safety in installation and use.

Description

Technical Field

[0001] The utility model relates to the technical field of iron and steel metallurgy and steelmaking, in particular to an automatic ladle correction device in a VD furnace. Background Art

[0002] In the prior art, as described in the ladle guiding and positioning device and the ladle car disclosed in the Chinese utility model patent CN213002620U, the existing ladle structure and the ladle seat structure are as shown in the patent and its drawings. The existing ladle includes a ladle body, two ear shaft bosses arranged on the outer side of the ladle body, an ear shaft arranged on the ear shaft boss, a lower wheel edge arranged on the outer side of the ladle body and located below the ear shaft, and an upper wheel edge arranged on the outer side of the ladle body and located above the ear shaft. The ladle seat is two saddle seats as shown in the figure.

[0003] However, in actual production, in the VD process of steel metallurgy, the ladle needs to be slag-drained after refining and smelting to ensure the cleanliness of the molten steel, and then the ladle is placed in the VD furnace for further smelting. At present, in the steelmaking production process, slag-draining operation is required for steel tapping from the refining furnace. The on-site commander needs to command the crane operator to drop the ladle to the ground. After returning to the normal position, the crane operator will lift the ladle to the VD furnace for vacuum treatment. The ladle structure used is as follows: Figure 4 As shown, ear shaft bosses are symmetrically arranged on the ladle body, and ear shafts are fixedly arranged on the two ear shaft bosses. The difference from the prior art is that a rotatable ear shaft seat is arranged on the ear shaft. During hoisting, the ladle is hoisted by two hooks hung on the hoisting points above the ear shaft seat, and a saddle seat like that in the prior art is arranged in the VD furnace.

[0004] According to the existing technology and actual production, the existing saddle seat is not suitable for the above Figure 4The ladle structure in the structure is that the thickness of the existing ladle trunnion boss is greater than the width of the lower wheel edge of the ladle, the width of the trunnion boss is adapted to the distance between the two saddles, the side end surface of the trunnion boss is vertical, and after the ladle seat is seated, the top surface between the two saddles of the saddle seat and the inner side surface between the two saddles face the bottom surface and two side surfaces of the trunnion boss to complete the positioning of the ladle; the thickness of the existing ladle trunnion boss is less than the width of the lower wheel edge of the ladle, so the trunnion seat can only be seated between the two saddles, but the width of the trunnion seat is much smaller than the distance between the two saddles, and The side end face of the ear shaft seat is an irregular inclined surface, so the main problems with the existing saddle seat design are: after the ladle is lifted for slag pouring, the position of the ladle cannot be directly returned to the original position, and there is a certain angle of inclination, which causes it to tilt when it is placed in the VD furnace. After the saddle seat of the VD furnace is placed, only the ear shaft seat and the saddle seat can be returned to the original position. However, since the ladle and the ear shaft seat are rotatably connected, it is easy to cause the ladle to fail to return to the original position, resulting in the slag surface rising during the vacuum treatment operation and slag splashing when the molten steel is discharged, affecting production and equipment safety hazards. In order to solve this problem, the main operation previously adopted was to drop the ladle back to the ground after slag pouring, and then lift the ladle and place it in the VD furnace after correcting the position of the ladle. This seriously affects the production rhythm and restricts the increase in steel production capacity. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic correction device for a ladle in a VD furnace, which solves the current problem. After the automatic correction device is installed in the VD furnace, during the process of the ladle being placed in the VD furnace, even if the ladle is tilted at a certain angle, the ladle can be straightened under the correction device, thereby saving the ladle operation time, eliminating the safety accidents caused by the ladle tilting, and realizing safe and efficient production. The utility model has the advantages of simple and easy design and processing, low manufacturing cost, and convenient and safe installation and use.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: an automatic ladle correction device in a VD furnace, comprising a furnace body of the VD furnace and a saddle seat main body arranged on both sides inside the furnace body, the saddle seat main body is in the middle part of the furnace body in the height direction, the saddle seat main body comprises a main support seat, two positioning seats symmetrically arranged along the midline of the length direction of the main support seat, the two positioning seats are arranged on the top of the main support seat, guide seats are arranged on the top of the two positioning seats, a secondary support seat is arranged on the inner side of the main support seat, the bottom of the main support seat extends to the bottom of the furnace body or is supported by another support seat, positioning slopes are arranged on the inner sides of the two positioning seats, guide buffer slopes are arranged on the lower inner sides of the two guide seats, and guide slopes are arranged on the upper inner sides of the two guide seats, and the guide slopes, guide buffer slopes and positioning slopes are connected in sequence.

[0007] Through the above technical scheme, during the process of the ladle seat being placed in the VD furnace, the ladle that has just completed the slag pouring operation is in a tilted state. At this time, the tilted ladle seat can be directly placed in the VD furnace equipped with an automatic correction device, and the top of the trunnion seat of the ladle is lifted by the hook of the crane, and the ladle is slowly dropped into the VD furnace. The trunnion seats on both sides of the ladle follow the guide slope and guide buffer slope of the guide seat, and finally fall between the two positioning seats. The positioning slope of the positioning seat just cooperates with the bottom of the trunnion seat to realize the correction of the trunnion seat. At the same time, the lower edge of the ladle contacts the auxiliary support seat to realize the position correction of the ladle.

[0008] Furthermore, the main support seat is a rectangular parallelepiped, and the widths of the positioning seat and the guide seat are the same as the width of the main support seat.

[0009] Furthermore, the height of the auxiliary support seat is the same as the height of the main support seat.

[0010] Furthermore, the sum of the height of the positioning seat and the guide seat is less than the height of the trunnion seat.

[0011] Furthermore, the auxiliary support seat is set as one, and the auxiliary support seat is set directly below the two positioning seats. At this time, the width of the auxiliary support seat is smaller than the width of the ear shaft boss, and the ear shaft boss of the ladle is directly corrected by one support seat.

[0012] Furthermore, two auxiliary support seats are provided, and the two auxiliary support seats are respectively arranged directly below the corresponding positions of the two positioning seats. The outer distance between the two auxiliary support seats is greater than the width of the ear shaft boss. At this time, the two auxiliary support seats can contact with the two sides of the ear shaft boss and the lower edge of the ladle on both sides of the ear shaft boss to correct the ladle, which has a better effect.

[0013] Furthermore, the two positioning slopes are arranged obliquely from top to bottom toward the center line of the main support seat; the two guide buffer slopes are arranged vertically from top to bottom; the two guide slopes are arranged obliquely from top to bottom toward the center line of the main support seat;

[0014] Furthermore, a positioning groove is formed between the two positioning seats, and a guiding groove is formed between the two guiding seats.

[0015] Furthermore, the width of the two auxiliary support seats is equal to the width of the bottom of the two positioning seats.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides an automatic correction device in the VD furnace, so that the ladle can be directly placed in the furnace body after the slag pouring operation is completed, reducing the operation steps of dropping the ladle on the ground for correction, greatly saving the running time of the ladle, and realizing safe and rapid production; the utility model provides a guide seat and a positioning seat, which is convenient for the ladle to fall into the operation, and the trunnion seat is corrected by the positioning seat after the ladle falls into the furnace, and the ladle is straightened by the auxiliary support seat, avoiding safety accidents caused by the ladle tilting or moving during the production process after falling into the furnace body; the utility model has a simple structural design, is simple and easy to process, and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the saddle structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the overall structure installation of the utility model Figure 1 ,

[0021] Figure 3 This is a schematic diagram of the overall structure installation of the utility model Figure 2 ,

[0022] Figure 4 The utility model is a schematic diagram of the ladle structure.

[0023] In the figure: 1. main support seat, 2. positioning seat, 3. guide seat, 4. auxiliary support seat, 5. guide slope, 6. guide buffer slope, 7. positioning slope, 8. furnace body, 9. ladle, 10. ear shaft seat, 11. ear shaft, 12. lower edge of ladle, 13. ear shaft boss, 14. center line of main support seat. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] like Figure 1As shown, an automatic ladle correction device in a VD furnace comprises a furnace body 8 of the VD furnace and a saddle seat body arranged on both sides of the furnace body 8, the saddle seat body is located in the middle of the furnace body 8 in the height direction, the saddle seat body comprises a main support seat 1, two positioning seats 2 symmetrically arranged along the main support seat center line 14 in the length direction of the main support seat 1, the two positioning seats 2 are arranged on the top of the main support seat 1, and a guide seat 3 is arranged on the top of the two positioning seats 2, a secondary support seat 4 is arranged on the inner side of the main support seat 1, the bottom of the main support seat 1 extends to the bottom of the furnace body 8 or is supported by another support seat, the inner side of the two positioning seats 2 is provided with a positioning slope 7, the inner side of the two guide seats 3 is provided with a guide buffer slope 6, the inner side of the two guide seats 3 is provided with a guide slope 5, and the guide slope 5, the guide buffer slope 6 and the positioning slope 7 are connected in sequence. A positioning groove is formed between the two positioning seats 2, and a guide groove is formed between the two guide seats 3. Furthermore, the auxiliary support seat 4 is set as one, and the auxiliary support seat 4 is set directly below the two positioning seats 2. At this time, the width of the auxiliary support seat 4 is smaller than the width of the ear shaft boss 13, and the ear shaft boss 13 of the ladle 9 is directly corrected by one support seat.

[0027] Example 2

[0028] This embodiment is based on embodiment 1. Figure 1-4 As shown, its further technical solution is:

[0029] Furthermore, the height of the auxiliary support seat 4 is the same as that of the main support seat 1. The height of the positioning seat 2 and the guide seat 3 added together is less than the height of the trunnion seat 10.

[0030] There are two auxiliary support seats 4, and the two auxiliary support seats 4 are respectively arranged directly below the corresponding positions of the two positioning seats 2. The outer distance between the two auxiliary support seats 4 is greater than the width of the ear shaft boss 13. At this time, the two auxiliary support seats 4 can contact with the two sides of the ear shaft boss 13 and the lower edge 12 of the ladle on both sides of the ear shaft boss 13 to correct the ladle 9, which has a better effect.

[0031] The two positioning slopes 7 are both inclined from top to bottom toward the center line 14 of the main support seat; the two guide buffer slopes are vertically arranged from top to bottom; the two guide slopes 5 are both inclined from top to bottom toward the center line 14 of the main support seat;

[0032] The width of the two auxiliary support seats 4 is equal to the width of the bottom of the two positioning seats 2 .

[0033] Usage process:

[0034] According to the structural design of the trunnion seat 10 of the ladle 9, the inclination angle of the positioning slope 7 of the positioning seat 2 is set, and the distance between the two positioning seats 2 is set according to the width of the bottom of the trunnion seat 10. The distance between the bottoms of the two positioning seats 2 is slightly larger than the width of the bottom of the trunnion seat 10, and the width of the tops of the two positioning seats 2 is slightly larger than the width of the middle of the trunnion seat 10. The two positioning seats 2 are welded to the main support seat 1, and the guide seat 3 can be integrally formed with the positioning seat 2. The positioning seat 2 and the guide seat 3 are welded to form an internal hollow box, and the two auxiliary support seats 4 are welded to the inner side of the main support seat 1 ( Figure 2 The center front view direction is the outside of the main support seat 1), the auxiliary support seat 4 can choose a high-strength square billet of 20 cm, and the installation height of the saddle seat body is determined according to the height of the VD furnace and the ladle 9 to set the height of the main support seat 1 or install another support seat at the bottom of the main support seat 1. The main support seat 1 can choose a steel rectangular box with a hollow interior. The width of the main support seat 1 is adapted to the thickness of the ear shaft seat 10. It can be used after the two saddle seat bodies are installed.

[0035] Through the above technical scheme, during the process of the ladle 9 being placed into the VD furnace, the ladle 9 which has just completed the slag pouring operation is in a tilted state. At this time, the tilted ladle 9 can be directly placed into the VD furnace equipped with an automatic correction device, and the top of the trunnion seat 10 of the ladle 9 is lifted by the hook of the crane, and the ladle 9 is slowly dropped into the VD furnace. The trunnion seats 10 on both sides of the ladle 9 follow the guide slope 5 and the guide buffer slope of the guide seat 3, and finally fall between the two positioning seats 2. The positioning slope 7 of the positioning seat 2 just cooperates with the bottom of the trunnion seat 10 to realize the correction of the trunnion seat 10. At the same time, the lower edge 12 of the ladle contacts with the auxiliary support seat 4 to realize the position correction of the ladle 9.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An automatic ladle correction device in a VD furnace, characterized in that: The invention comprises a furnace body (8) of a VD furnace and a saddle seat body arranged on both sides of the furnace body (8), wherein the saddle seat body comprises a main support seat (1), two positioning seats (2) symmetrically arranged along the main support seat center line (14) of the main support seat (1), the two positioning seats (2) are arranged on the top of the main support seat (1), a guide seat (3) is arranged on the top of the two positioning seats (2), a secondary support seat (4) is arranged on the inner side of the main support seat (1), a positioning slope (7) is arranged on the inner side of the two positioning seats (2), a guide buffer slope (6) is arranged on the lower inner side of the two guide seats (3), and a guide slope (5) is arranged on the upper inner side of the two guide seats (3), and the guide slope (5), the guide buffer slope (6) and the positioning slope (7) are connected in sequence.

2. The automatic ladle correction device in a VD furnace according to claim 1, characterized in that: The main support seat (1) is a rectangular parallelepiped, and the widths of the positioning seat (2) and the guide seat (3) are the same as the width of the main support seat (1).

3. The automatic ladle correction device in a VD furnace according to claim 2, characterized in that: The height of the auxiliary support seat (4) is the same as the height of the main support seat (1).

4. The automatic ladle correction device in a VD furnace according to claim 3, characterized in that: The sum of the height of the positioning seat (2) and the guide seat (3) is less than the height of the trunnion seat (10).

5. The automatic ladle correction device in a VD furnace according to any one of claims 1 to 4, characterized in that: The auxiliary support seat (4) is provided as one, and the auxiliary support seat (4) is provided directly below between the two positioning seats (2).

6. The automatic ladle correction device in a VD furnace according to claim 4, characterized in that: The auxiliary support seats (4) are provided in two numbers, and the two auxiliary support seats (4) are respectively provided directly below the corresponding positions of the two positioning seats (2), and the outer side distance of the two auxiliary support seats (4) is greater than the width of the ear shaft boss (13).

7. The automatic ladle correction device in a VD furnace according to claim 6, characterized in that: The two positioning slopes (7) are both arranged obliquely from top to bottom toward the center line (14) of the main support seat; the two guide buffer slopes (6) are arranged vertically from top to bottom; and the two guide slopes (5) are both arranged obliquely from top to bottom toward the center line (14) of the main support seat.

8. The automatic ladle correction device in a VD furnace according to claim 7, characterized in that: A positioning groove is formed between the two positioning seats (2), and a guiding groove is formed between the two guiding seats (3).

9. The automatic ladle correction device in a VD furnace according to claim 8, characterized in that: The width of the two auxiliary support seats (4) is equal to the width of the bottom of the two positioning seats (2).

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