Dummy bar head convenient to adjust for continuous casting machine
By setting up structures such as embedded grooves, side plates, and U-shaped plates on the rectangular dummy bar head, rapid switching of the square dummy bar head can be achieved, solving the problems of long time consumption and high cost in the production switching process of small billet continuous casting machine, and improving production efficiency and equipment utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINXING DUCTILE IRON PIPES XINJIANG
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-15
AI Technical Summary
When switching between rectangular and square billets in a small billet continuous casting machine, the dummy bar needs to be replaced, which is time-consuming, labor-intensive, affects the operating rate, and increases spare parts costs.
A rectangular siphon head that is easy to adjust is designed. By setting the rectangular siphon head with structures such as an embedded groove, side plate, U-shaped plate and closing plate, the square siphon head can be quickly switched, preventing foreign objects from entering the fixed groove and improving production efficiency.
The ability to quickly switch between derricks without disassembling the rectangular derrick head improves equipment operating rate, reduces the labor intensity and cost of maintenance personnel, and increases production capacity.
Smart Images
Figure CN224238226U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dummy ingot head technology, specifically a dummy ingot head for a continuous casting machine that is easy to adjust. Background Technology
[0002] The dummy bar in a continuous casting machine is one of the important devices in continuous steel casting. Small billet continuous casting machines generally use rigid dummy bars. Rigid dummy bars have a simple design, are easy to operate, and have a long service life. During production, they do not exhibit extension or swaying, resulting in smooth casting and billet pulling with minimal vibration, thus reducing the initial casting leakage rate. The rigid dummy bar consists of a dummy head and a bar body, with the bar body divided into several sections. The transition section of the dummy head is connected to the bar body by a pin. Its working principle is as follows: during continuous casting, the head of the rigid dummy head enters the crystallizer, blocking the lower opening to prevent molten steel leakage. After casting begins, the molten steel quickly solidifies and bonds with the dummy hook on the dummy head. Subsequently, a straightening machine pulls the dummy bar, continuously drawing the billet out of the crystallizer. Once the dummy bar head passes through the straightening machine, it separates from the billet.
[0003] Currently, it is common practice for small billet continuous casting machines to be modified to simultaneously produce rectangular billets with the same cross-sectional dimensions as square billets. Switching between small and rectangular billet production involves using the same dummy bar to change the dummy head, drawing the different billet shapes to the straightening machine, and finally separating the dummy bar from the billet. For small steel plants with one converter and one continuous casting machine, changing the dummy head for switching between square and rectangular billet production is both time-consuming and labor-intensive, severely restricting the continuous casting machine's operating rate. Each switch requires 3-4 hours, impacting output. Furthermore, changing the dummy head requires three maintenance workers, increasing the workload of employees. Frequent dummy head changes also cause severe wear on the dummy bar and dummy head pins, increasing spare parts costs. Therefore, we propose a more easily adjustable dummy head for continuous casting machines. Utility Model Content
[0004] The purpose of this invention is to provide a conveniently adjustable dummy ingot head for continuous casting machines to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a conveniently adjustable dummy ingot head for a continuous casting machine, comprising a rectangular dummy ingot head, wherein an embedding groove is formed on the upper surface of the rectangular dummy ingot head, the embedding groove extends out of the rectangular dummy ingot head, a dummy ingot rod is fixedly connected to the right side surface of the rectangular dummy ingot head, side plates are respectively provided on the upper and lower sides of the rectangular dummy ingot head, and first grooves are formed on the upper side and the left and right side surfaces of the side plates, the three first grooves are interconnected, a second groove is formed on the upper surface of the rectangular dummy ingot head, a connecting groove is formed on the bottom wall of the second groove, a first threaded groove is formed on the bottom wall of the second groove, a sinking groove is formed on the bottom wall of the first groove, and a first threaded groove is also formed on the bottom wall of the sinking groove, sinking bolts are threadedly fitted inside the two first threaded grooves, and a sealing component is provided inside the first groove.
[0006] Preferably, the closing component includes a U-shaped plate, the two vertical plates of the U-shaped plate are slidably connected to the inside of the first grooves on the left and right sides respectively, the horizontal plate of the U-shaped plate is located inside the upper first groove, and the right side surface of the rectangular spindle head is provided with an annular embedding groove, and the connecting groove communicates with the inside of the annular embedding groove.
[0007] Preferably, the right vertical plate of the U-shaped plate extends into the interior of the annular embedded groove through a connecting groove.
[0008] Preferably, a pressing groove is provided on the right side surface of the right vertical plate of the U-shaped plate, and a pressing ring is provided inside the annular embedded groove.
[0009] Preferably, the pressing ring is adapted to the pressing groove, and a second threaded groove is provided on both the right side surface of the pressing ring and the inner wall of the pressing groove.
[0010] Preferably, the inner threads of the two second threaded grooves are fitted with pressing bolts, and the inner surface of the second groove is provided with a sealing plate.
[0011] Preferably, the closing plate is U-shaped, and the left and right vertical plates of the closing plate have the same structure as the left and right vertical plates of the U-shaped plate.
[0012] Preferably, the lower surface of the side plate is fixedly connected with a rectangular protrusion that matches the embedding groove, and the left side surface of the rectangular lead head is provided with an extension groove that communicates with the interior of the second groove.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] This invention, through the design of two side plates, allows for convenient switching between rectangular and square dummy ingot heads. It enables rapid switching between square and rectangular billet production dummy ingot heads without disassembling the entire rectangular dummy ingot head, thereby improving equipment operating rate, reducing the labor intensity of maintenance personnel, lowering costs, and increasing production capacity.
[0015] This utility model, through the cooperation of a U-shaped plate and a closing plate, can seal the required fixing groove of the side plate, preventing debris from entering its interior and causing the need for cleaning during switching and installation, thus improving the efficiency of switching between rectangular and square blanks. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the left side of the rectangular ingot head of this utility model;
[0018] Figure 3 This is a schematic diagram of the side plate separation of this utility model;
[0019] Figure 4 This is a schematic diagram of the extension groove of this utility model;
[0020] Figure 5 This is a schematic diagram of the sealing plate of this utility model.
[0021] In the diagram: 1. Rectangular spindle head; 2. Embedded groove; 3. Spindle rod; 4. Side plate; 5. First groove; 6. Second groove; 7. First threaded groove; 8. Sinking groove; 9. Sinking bolt; 10. U-shaped plate; 11. Annular embedded groove; 12. Connecting groove; 13. Pressing groove; 14. Pressing ring; 15. Second threaded groove; 16. Pressing bolt; 17. Closing plate; 18. Extension groove. Detailed Implementation
[0022] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0023] Please see Figures 1-5As shown, a conveniently adjustable dummy bar for a continuous casting machine includes a rectangular dummy bar 1. An embedding groove 2 is formed on the upper surface of the rectangular dummy bar 1, extending beyond the outer surface of the dummy bar 1. A dummy bar rod 3 is fixedly connected to the right side surface of the rectangular dummy bar 1. Side plates 4 are respectively provided on the upper and lower sides of the rectangular dummy bar 1. First grooves 5 are formed on the upper side and the left and right side surfaces of the side plates 4, and the three first grooves 5 are interconnected. A second groove 6 is formed on the upper surface of the rectangular dummy bar 1, and a first threaded groove is formed on the bottom wall of the second groove 6. 7. A recessed groove 8 is provided on the bottom wall of the first groove 5. A first threaded groove 7 is also provided on the bottom wall of the recessed groove 8. A recessed bolt 9 is threaded inside the two first threaded grooves 7. A closed component is provided inside the first groove 5. With the setting of the two side plates 4, it is convenient to switch the rectangular dummy head 1 to the square dummy head. The switching between square billet and rectangular billet production dummy head can be quickly realized without disassembling the entire rectangular dummy head 1, thereby improving equipment operating rate, reducing the labor intensity of maintenance personnel, reducing costs, and increasing production capacity.
[0024] Furthermore, the closure assembly includes a U-shaped plate 10, with two vertical plates of the U-shaped plate 10 slidably connected to the interiors of the first grooves 5 on the left and right sides, respectively. The horizontal plate of the U-shaped plate 10 is located inside the upper first groove 5. An annular embedding groove 11 is formed on the right side surface of the rectangular spindle head 1, and a connecting groove 12 is formed on the bottom wall of the second groove 6. The connecting groove 12 communicates with the interior of the annular embedding groove 11. The right vertical plate of the U-shaped plate 10 extends into the interior of the annular embedding groove 11 through the connecting groove 12. A pressing groove 13 is formed on the right side surface of the right vertical plate of the U-shaped plate 10. A pressing ring 14 is provided inside the annular embedding groove 11. The pressing ring 14 is adapted to the pressing groove 13, and the right side surface of the pressing ring 14 is aligned with the pressing groove 13. The inner wall of 3 is provided with a second threaded groove 15. The inner threads of the two second threaded grooves 15 are fitted with pressing bolts 16. The inner wall of the second groove 6 is provided with a closing plate 17. The closing plate 17 is U-shaped. The left and right vertical plates of the closing plate 17 have the same structure as the left and right vertical plates of the U-shaped plate 10. The lower surface of the side plate 4 is fixedly connected with a rectangular protrusion that matches the embedded groove 2. The left side surface of the rectangular lead head 1 is provided with an extension groove 18 that communicates with the inside of the second groove 6. Through the cooperation of the U-shaped plate 10 and the closing plate 17, the required fixing groove of the side plate 4 can be closed, avoiding the problem of cleaning when switching installation caused by foreign objects entering its interior, and improving the efficiency of switching between rectangular and square billets.
[0025] When installing the U-shaped plate 10 and the closing plate 17, a rubber mallet can be used to tap their horizontal plates to facilitate insertion.
[0026] Working principle: When a square derrick head is required, first remove the loose pressing bolt 16, then remove the pressing ring 14, and then pull out the sealing plate 17. Next, take two side plates 4 and place them on the upper and lower sides of the rectangular derrick head 1, so that the rectangular protrusion enters the interior of the embedding groove 2. Then, use the sinking bolt 9 in conjunction with the two first threaded grooves 7 to fix the side plates 4 and the rectangular derrick head 1 together, so that the rectangular derrick head 1 becomes a directional derrick head. Then, take out the U-shaped plate 10 and place it, so that the horizontal plate of the U-shaped plate 10 is located inside the first groove 5. At this point, the left vertical plate of the U-shaped plate 10 enters the interior of the extension groove 18, while the right vertical plate of the U-shaped plate 10 enters the interior of the annular embedding groove 11 through the connecting groove 12. Then, the pressing ring 14 is re-fastened into the interior of the annular embedding groove 11 and fixed again with the pressing bolt 16. The pressing ring 14 and the pressing bolt 16 are used to fix the U-shaped plate 10, thereby completing the fixation of the U-shaped plate 10. The U-shaped plate 10 is used to prevent debris from entering the interior of the sinking groove 8, and the sealing plate 17 is used to prevent debris from entering the interior of the first threaded groove 7.
[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A conveniently adjustable dummy ingot head for a continuous casting machine, comprising a rectangular dummy ingot head (1), characterized in that, The upper surface of the rectangular spindle head (1) is provided with an embedding groove (2), which extends out of the rectangular spindle head (1). A spindle rod (3) is fixedly connected to the right side surface of the rectangular spindle head (1). Side plates (4) are provided on the upper and lower sides of the rectangular spindle head (1). The upper side and the left and right sides of the side plates (4) are provided with first grooves (5). The three first grooves (5) are connected internally. The upper surface of the rectangular spindle head (1) is provided with a second groove (6). The bottom wall of the second groove (6) is provided with a connecting groove (12). The bottom wall of the second groove (6) is provided with a first threaded groove (7). The bottom wall of the first groove (5) is provided with a sinking groove (8). The bottom wall of the sinking groove (8) is also provided with a first threaded groove (7). The sinking bolts (9) are threaded inside the two first threaded grooves (7). A sealing component is provided inside the first groove (5).
2. The adjustable dummy ingot head for a continuous casting machine according to claim 1, characterized in that: The enclosed assembly includes a U-shaped plate (10), the two vertical plates of the U-shaped plate (10) are slidably connected to the inside of the first groove (5) on the left and right sides respectively, the horizontal plate of the U-shaped plate (10) is located inside the upper first groove (5), and the right side surface of the rectangular lead head (1) is provided with an annular embedding groove (11), and the connecting groove (12) communicates with the inside of the annular embedding groove (11).
3. The easily adjustable dummy ingot head for a continuous casting machine according to claim 2, characterized in that: The right vertical plate of the U-shaped plate (10) extends into the interior of the annular embedded groove (11) through the connecting groove (12).
4. The adjustable dummy ingot head for a continuous casting machine according to claim 3, characterized in that: A pressing groove (13) is provided on the right side surface of the vertical plate on the right side of the U-shaped plate (10), and a pressing ring (14) is provided inside the annular embedded groove (11).
5. The adjustable dummy ingot head for a continuous casting machine according to claim 4, characterized in that: The pressing ring (14) is adapted to the pressing groove (13), and the right side surface of the pressing ring (14) and the inner wall of the pressing groove (13) are both provided with a second threaded groove (15).
6. The adjustable dummy ingot head for a continuous casting machine according to claim 5, characterized in that: The inner threads of the two second threaded grooves (15) are fitted with pressing bolts (16), and the inner threads of the second groove (6) are fitted with a sealing plate (17).
7. The adjustable dummy ingot head for a continuous casting machine according to claim 6, characterized in that: The closing plate (17) is U-shaped, and the left and right vertical plates of the closing plate (17) have the same structure as the left and right vertical plates of the U-shaped plate (10).
8. The adjustable dummy ingot head for a continuous casting machine according to claim 1, characterized in that: The lower surface of the side plate (4) is fixedly connected with a rectangular protrusion that is adapted to the embedded groove (2), and the left side surface of the rectangular lead head (1) is provided with an extension groove (18) that communicates with the inside of the second groove (6).