A ladle quick positioning device of ferrous alloy casting machine

Abstract

The application provides a ladle quick positioning device of ferrous alloy casting machine, which solves the problem of low casting efficiency caused by difficult ladle nozzle positioning before casting and poor automation. The device comprises a rack, a collision-proof shield, a left clamping mechanism, a right clamping mechanism and a driving mechanism. The collision-proof shield comprises a left collision-proof shield and a right collision-proof shield which are symmetrically fixed on opposite sides of the rack. The driving mechanism is installed on the rack. The left clamping mechanism and the right clamping mechanism are both installed on the chain of the driving mechanism. The driving mechanism drives the left clamping mechanism and the right clamping mechanism to synchronously approach and push the positioning pipe located at the central position of the ladle tail to make the ladle rotate towards the equipment center line until the ladle nozzle is opposite to the pouring pool opening, and then the two clamping mechanisms clamp the ladle. The ladle quick positioning device of ferrous alloy casting machine has the advantages of synchronous opening and closing action of the clamping mechanism realized by motor operation, quick positioning of the center line of the ladle and the center line of the equipment, and ingenious structure.

Description

Technical Field

[0001] This invention belongs to the field of casting technology, and in particular relates to a rapid positioning device for a ladle in a ferroalloy casting machine. Background Technology

[0002] Currently, steel mills use two main methods for casting ferroalloys: either manually operating an overhead crane to tilt the ladle and pour the molten iron into the casting pool, or fabricating a jig to mount the ladle and then using a lifting device to tilt both the ladle and jig together for casting. Both methods require aligning the ladle spout with the opening of the casting pool before pouring can begin. However, in actual production, both methods have the following drawbacks:

[0003] 1. When using an overhead crane to pour steel into a ladle, it is necessary to visually confirm that the ladle spout is aligned with the opening of the pouring pool before pouring to ensure that the molten iron is poured into the pouring pool. However, due to the inherent danger of the pouring operation, the operator needs to be more than ten meters away from the pouring point to visually confirm the alignment of the ladle and the pouring pool, which is quite difficult. Molten iron often pours outside the pouring pool or onto the side wall of the pouring pool, causing the pouring pool to melt and be damaged.

[0004] 2. When using the jig, there are difficulties in aligning the ladle nozzle with the jig when the ladle is placed into it. When the ladle is suspended by the overhead crane slings, due to issues such as the ladle's center of gravity, the twisting of the slings, and the ladle's inertia after the crane stops, the centerline of the ladle will form an angle θ with the equipment's centerline when the ladle falls onto the conveyor car on the conveyor base. This causes the molten iron to deflect during pouring and prevents it from being poured into the relevant equipment. This requires multiple adjustments to the lifting and lowering of the ladle and manual rotation of the ladle to align the nozzle with the jig, affecting work efficiency. Manual adjustments also pose safety hazards due to the close proximity to the ladle.

[0005] Based on the aforementioned technical issues, there is an urgent need to propose a rapid ladle positioning device to meet the requirements of quickly and safely completing the preparation work for molten iron pouring. Summary of the Invention

[0006] In view of this, the present invention aims to propose a ladle rapid positioning device for a ferroalloy casting machine. The motor operation realizes the synchronous opening and closing action of the clamping mechanism, thereby achieving the function of rapid positioning of the ladle centerline and the equipment centerline. The structure is ingenious.

[0007] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0008] A rapid positioning device for a ladle in a ferroalloy casting machine includes a frame, a crash guard, a left clamping mechanism, a right clamping mechanism, and a drive mechanism. The crash guard includes a left crash guard and a right crash guard symmetrically fixed on opposite sides of the frame. The drive mechanism is mounted on the frame. The left and right clamping mechanisms are both mounted on the chain of the drive mechanism. When the drive mechanism drives the left and right clamping mechanisms to move closer simultaneously, one of the clamping mechanisms pushes a positioning tube located at the center of the ladle's tail, causing the ladle to rotate toward the equipment's centerline until the ladle nozzle is directly opposite the pouring pool opening. At this point, both clamping mechanisms clamp and position the ladle. When the drive mechanism drives the left and right clamping mechanisms to move away simultaneously, the two clamping mechanisms release the ladle.

[0009] Furthermore, the drive mechanism also includes a guide rail assembly, a drive sprocket, a driven sprocket, and a motor assembly. The guide rail assembly is a guide rail frame, with a drive shaft and a driven shaft respectively installed at both ends of the guide rail frame. A drive sprocket is installed on the drive shaft, and a driven sprocket is installed on the driven shaft. The chain engages with the drive sprocket and the driven sprocket. The motor assembly is installed on the guide rail frame and drives the drive shaft to rotate. A guide rail is opened on the outer surface of the two oppositely arranged side plates of the guide rail frame. The left clamping mechanism and the right clamping mechanism are engaged in the guide rail of the guide rail frame through a running roller mechanism and an anti-impact roller mechanism, respectively. The chain rotation drives the left clamping mechanism and the right clamping mechanism to achieve linear synchronous reciprocating motion on the guide rail.

[0010] Furthermore, the left clamping mechanism and the right clamping mechanism have the same structure, both being box-shaped structures, and the guide rail frame passes through the box-shaped left clamping mechanism and the right clamping mechanism.

[0011] Furthermore, the chain includes a first chain and a second chain. One end of the first chain is fixedly connected to the middle of the right clamping mechanism, and the other end of the first chain passes through the middle of the left clamping mechanism and engages with the driven sprocket before being fixedly connected to the lower part of the left clamping mechanism. One end of the second chain is fixedly connected to the middle of the right clamping mechanism, and the other end of the second chain engages with the driving sprocket before passing through the lower part of the right clamping mechanism and being fixedly connected to the lower part of the left clamping mechanism.

[0012] Furthermore, multiple sets of running roller mechanisms and multiple sets of anti-impact roller mechanisms are respectively installed on the sides of the box-shaped left and right clamping mechanisms corresponding to the guide rails.

[0013] Furthermore, two sets of running roller mechanisms and two sets of anti-impact roller mechanisms are symmetrically arranged on each clamping mechanism, with the two sets of anti-impact roller mechanisms positioned between the two sets of running roller mechanisms.

[0014] Furthermore, the running roller mechanism includes a mounting shaft and running rollers, the mounting shaft being mounted on a corresponding clamping mechanism, and the running rollers being fitted within a track.

[0015] Furthermore, the anti-impact roller mechanism includes an anti-impact wheel and a wheel seat. The anti-impact wheel is mounted on the wheel seat, and the wheel seat is mounted on a corresponding clamping mechanism. The wheel surface of the anti-impact wheel rests against the track.

[0016] Furthermore, when not in operation, the left and right clamping mechanisms retract into the corresponding side anti-collision shields.

[0017] Furthermore, the ladle rapid positioning device is installed on the conveyor base.

[0018] Compared with existing technologies, the ladle rapid positioning device for a ferroalloy casting machine described in this invention has the following advantages:

[0019] 1. The entire rapid positioning process of the present invention is controlled by a program, with the mechanical and electrical systems working together. The synchronous opening and closing of the clamping mechanism is achieved through the operation of the motor, thereby realizing the rapid positioning function between the center line of the ladle and the center line of the equipment. It has the characteristics of ingenious structure and the advantage of high degree of mechanization.

[0020] 2. This invention ingeniously achieves the circumferential rotation and positioning of the ladle through linear motion, thus completing the purpose of rapid positioning of the ladle. This saves manpower and ensures the correctness of the molten iron flow direction during ladle pouring, thereby improving the efficiency of the preparation work for pouring operations.

[0021] 3. The present invention has a reasonable structural design, is easy to install and disassemble, and can be used by operators after simple training, making it suitable for widespread use. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0023] Figure 1 This is a front view of a ladle rapid positioning device for a ferroalloy casting machine according to an embodiment of the present invention;

[0024] Figure 2 This is a top view of a ladle rapid positioning device for a ferroalloy casting machine according to an embodiment of the present invention;

[0025] Figure 3 This is a front view of a ladle quick positioning device for a ferroalloy casting machine after removing the anti-collision guard and frame, as described in an embodiment of the present invention.

[0026] Figure 4This is a top view of a ladle quick positioning device for a ferroalloy casting machine after removing the anti-collision guard and frame, as described in an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram showing the connection between the left and right clamping mechanisms and the chain;

[0028] Figure 6 This diagram illustrates the process of correcting the ladle posture using a rapid positioning device for a ferroalloy casting machine according to the present invention.

[0029] Figure 7 This diagram illustrates the process of correcting the ladle posture using a rapid positioning device for a ferroalloy casting machine according to the present invention, from another angle.

[0030] Figure 8 This is a front view of the ladle rapid positioning device of this application, installed on the conveyor base, without the ladle being properly aligned during actual use.

[0031] Figure 9 This is a top view of the ladle rapid positioning device of this application, installed on the conveyor base, with the ladle's state not corrected during actual use.

[0032] Figure 10 This is a front view of the ladle's state after correction when the ladle quick positioning device of this application is installed on the conveyor base for specific use;

[0033] Figure 11 This is a top view showing the state of the ladle after correction when the ladle quick positioning device of this application is installed on the conveyor base for specific use.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Frame; 2. Left anti-collision guard; 3. Left clamping mechanism; 4. Right clamping mechanism; 5. Drive mechanism; 6. Right anti-collision guard; 7. Drive sprocket; 8. Driven sprocket; 9. Motor assembly; 10. Drive shaft; 11. Driven shaft; 12. Running roller mechanism; 13. Anti-impact roller mechanism; 14. First chain; 15. Second chain; 16. Mounting shaft; 17. Running roller; 18. Anti-impact wheel; 19. Wheel seat; 20. Ladle; 21. Positioning tube; 22. Conveying base; 23. Guide rail assembly; 24. Chain; 25. Overhead crane sling; 26. Ladle quick positioning device. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0037] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] like Figures 1-11As shown, a rapid positioning device for a ladle in a ferroalloy casting machine includes a frame 1, a crash guard, a left clamping mechanism 3, a right clamping mechanism 4, and a drive mechanism 5. The crash guard includes a left crash guard 2 and a right crash guard 6 symmetrically fixed on opposite sides of the frame 1. The drive mechanism 5 is mounted on the frame 1. The left clamping mechanism 3 and the right clamping mechanism 4 are both mounted on the chain 24 of the drive mechanism 5. The drive mechanism 5 drives the left clamping mechanism 3 and the right clamping mechanism 4 to move closer together to push the positioning tube 21 located at the center of the tail of the ladle 20, causing the ladle 20 to rotate toward the center line of the equipment until the nozzle of the ladle 20 is directly facing the opening of the casting pool. At this point, the two clamping mechanisms clamp the ladle. When the two clamping mechanisms move away from each other, the ladle is released.

[0039] That is, when the driving mechanism 5 drives the left clamping mechanism 3 and the right clamping mechanism 4 to move closer simultaneously, one of the clamping mechanisms pushes the positioning tube 21 located at the center of the tail of the ladle 20 to rotate the ladle 20 toward the center line of the equipment until the ladle nozzle is directly facing the opening of the pouring pool, at which point the two clamping mechanisms clamp and position the ladle; when the driving mechanism 5 drives the left clamping mechanism 3 and the right clamping mechanism 4 to move away simultaneously, the two clamping mechanisms release the ladle 20.

[0040] When not in operation, the left clamping mechanism 3 and the right clamping mechanism 4 are retracted into the anti-collision guards on the corresponding sides; the anti-collision guards prevent the ladle from shaking and damaging the left clamping mechanism 3 and the right clamping mechanism 4 when the overhead crane is unstable. The ladle quick positioning device 26 is installed on the conveying base 22 in cooperation with it.

[0041] The drive mechanism 5 also includes a guide rail assembly 23, a drive sprocket 7, a driven sprocket 8, and a motor assembly 9. The guide rail assembly 23 is a guide rail frame, with a drive shaft 10 and a driven shaft 11 installed at both ends of the guide rail frame. The drive sprocket 7 is installed on the drive shaft 10, and the driven sprocket 8 is installed on the driven shaft 11. The chain engages with the drive sprocket 7 and the driven sprocket 8. The motor assembly 9 is installed on the guide rail frame and drives the drive shaft 10 to rotate. A guide rail is opened on the outer surface of the two oppositely arranged side plates of the guide rail frame. The left clamping mechanism 3 and the right clamping mechanism 4 are engaged in the guide rail of the guide rail frame through the running roller mechanism 12 and the anti-impact roller mechanism 13, respectively. The chain drives the left clamping mechanism 3 and the right clamping mechanism 4 to achieve linear synchronous reciprocating motion on the guide rail.

[0042] The left clamping mechanism 3 and the right clamping mechanism 4 have the same structure, both being box-shaped structures, and the guide rail frame passes through the box-shaped left clamping mechanism 3 and right clamping mechanism 4.

[0043] The chain 24 includes a first chain 14 and a second chain 15. One end of the first chain 14 is fixedly connected to the middle of the right clamping mechanism 4, and the other end of the first chain 14 passes through the middle of the left clamping mechanism 3 and engages with the driven sprocket 8 before being fixedly connected to the lower part of the left clamping mechanism 3. One end of the second chain 15 is fixedly connected to the middle of the right clamping mechanism 4, and the other end of the second chain 15 engages with the driving sprocket 7 before passing through the lower part of the right clamping mechanism 4 and being fixedly connected to the lower part of the left clamping mechanism 3.

[0044] Multiple sets of running roller mechanisms 12 and multiple sets of anti-impact roller mechanisms 13 are respectively arranged on the sides of the box-shaped left clamping mechanism 3 and right clamping mechanism 4 corresponding to the guide rail. Specifically, two sets of running roller mechanisms 12 and two sets of anti-impact roller mechanisms 13 are symmetrically arranged on each clamping mechanism, with the two sets of anti-impact roller mechanisms 13 positioned between the two sets of running roller mechanisms 12. Each running roller mechanism 12 includes a mounting shaft 16 and a running roller 17. The mounting shaft 16 is mounted on the corresponding clamping mechanism, and the running roller 17 is fitted into the rail. Each anti-impact roller mechanism 13 includes an anti-impact wheel 18 and a wheel seat 19. The anti-impact wheel 18 is mounted on the wheel seat 19, and the wheel seat 19 is mounted on the corresponding clamping mechanism. The wheel surface of the anti-impact wheel 18 rests against the rail. The running roller mechanism 12 is used for the movement of the clamping mechanism, and the anti-impact roller mechanism is used to resist impact when the ladle collides with the clamping mechanism.

[0045] The left and right clamping mechanisms of this application are mounted on the guide rail assembly via a running roller mechanism and an anti-impact roller mechanism. Chains are installed on the left and right clamping mechanisms respectively. The chains are driven by a motor assembly and sprockets to make the left and right clamping mechanisms move synchronously and in opposite directions along the guide rail assembly, realizing the clamping action and thus completing the rapid positioning function of the ladle. Since the entire process of lowering the ladle is carried out by a crane, and the crane's sling is a flexible mechanism, it is difficult to avoid the impact caused by the ladle swaying on the device. The impact force is mainly borne by the anti-impact roller mechanism and transmitted to the equipment frame by the guide rail assembly, thereby preventing the running roller mechanism from being damaged by large impact forces.

[0046] When the ladle is suspended by the overhead crane sling, the ladle nozzle forms an angle θ with the centerline. The left and right clamping mechanisms of this device move inward synchronously under the action of the motor assembly and chain. The left and right clamping mechanisms clamp the positioning tube at the tail of the ladle, causing the positioning tube at the tail of the ladle to rotate towards the centerline of the equipment, eliminating the angle θ. As a result, after the ladle falls onto the conveyor car of the conveyor base, the centerline of the ladle coincides with the centerline of the equipment, ensuring the correct direction of molten iron flow during pouring.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick positioning device for a ladle in a ferroalloy casting machine, characterized in that: The system includes a frame (1), a crash shield, a left clamping mechanism (3), a right clamping mechanism (4), and a drive mechanism (5). The crash shield includes a left crash shield (2) and a right crash shield (6) symmetrically fixed on opposite sides of the frame (1). The drive mechanism (5) is mounted on the frame (1). The left clamping mechanism (3) and the right clamping mechanism (4) are both mounted on the chain (24) of the drive mechanism (5). When the drive mechanism (5) drives the left clamping mechanism (3) and the right clamping mechanism (4) to move closer together, one of the clamping mechanisms pushes the positioning tube (21) located in the center of the tail of the ladle (20) to rotate the ladle (20) toward the center line of the equipment until the ladle nozzle is facing the opening of the pouring pool. When the drive mechanism (5) drives the left clamping mechanism (3) and the right clamping mechanism (4) to move away from each other, the two clamping mechanisms release the ladle (20). The drive mechanism (5) further includes a guide rail assembly (23), a drive sprocket (7), a driven sprocket (8), and a motor assembly (9). The guide rail assembly (23) is a guide rail frame, with a drive shaft (10) and a driven shaft (11) respectively mounted at both ends of the guide rail frame. The drive sprocket (7) is mounted on the drive shaft (10), and the driven sprocket (8) is mounted on the driven shaft (11). The chain engages with the drive sprocket (7) and the driven sprocket (8). The motor assembly... (9) Installed on the guide rail frame, the motor assembly (9) drives the drive shaft (10) to rotate, and the outer surfaces of the two oppositely arranged side plates of the guide rail frame are respectively provided with a guide rail. The left clamping mechanism (3) and the right clamping mechanism (4) are respectively cooperated in the guide rail of the guide rail frame through the running roller mechanism (12) and the anti-impact roller mechanism (13). The left clamping mechanism (3) and the right clamping mechanism (4) are driven to achieve linear synchronous reciprocating motion on the guide rail by the operation of the chain. The left clamping mechanism (3) and the right clamping mechanism (4) have the same structure, both being box-shaped structures. The guide rail frame passes through the box-shaped left clamping mechanism (3) and right clamping mechanism (4). The chain (24) includes a first chain (14) and a second chain (15). One end of the first chain (14) is fixedly connected to the middle of the right clamping mechanism (4). The other end of the first chain (14) passes through the middle of the left clamping mechanism (3) and engages with the driven sprocket (8) before being fixedly connected to the lower part of the left clamping mechanism (3). One end of the second chain (15) is fixedly connected to the middle of the right clamping mechanism (4). The other end of the second chain (15) engages with the driving sprocket (7) before passing through the lower part of the right clamping mechanism (4) and being fixedly connected to the lower part of the left clamping mechanism (3).

2. The ladle rapid positioning device for a ferroalloy casting machine according to claim 1, characterized in that: Multiple sets of running roller mechanisms (12) and multiple sets of anti-impact roller mechanisms (13) are respectively provided on the sides of the box-shaped left clamping mechanism (3) and right clamping mechanism (4) corresponding to the guide rail.

3. The ladle rapid positioning device for a ferroalloy casting machine according to claim 2, characterized in that: Two sets of running roller mechanisms (12) and two sets of anti-impact roller mechanisms (13) are symmetrically arranged on each clamping mechanism, and the two sets of anti-impact roller mechanisms (13) are located between the two sets of running roller mechanisms (12).

4. The ladle rapid positioning device for a ferroalloy casting machine according to claim 1, characterized in that: The running roller mechanism (12) includes a mounting shaft (16) and a running roller (17). The mounting shaft (16) is mounted on a corresponding clamping mechanism, and the running roller (17) is fitted into the track.

5. The ladle rapid positioning device for a ferroalloy casting machine according to claim 1, characterized in that: The anti-impact roller mechanism (13) includes an anti-impact wheel (18) and a wheel seat (19). The anti-impact wheel (18) is mounted on the wheel seat (19), and the wheel seat (19) is mounted on a corresponding clamping mechanism. The wheel surface of the anti-impact wheel (18) rests against the track.

6. A quick positioning device for a ladle in a ferroalloy casting machine according to any one of claims 1-5, characterized in that: When not in operation, the left clamping mechanism (3) and the right clamping mechanism (4) retract into the anti-collision shields on the corresponding sides.

7. The ladle rapid positioning device for a ferroalloy casting machine according to claim 6, characterized in that: The ladle rapid positioning device is installed on the conveying base (22).

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