Cold-start throwing connecting device of large round billet continuous casting machine

Abstract

The utility model relates to the field of steelmaking continuous casting equipment, in particular to a large round billet continuous casting machine cold start throwing connecting device which comprises an annular cover, the annular cover is formed by welding steel bars, the rear end of the annular cover is connected with an end cover, the end cover is formed by welding steel bars, and an L-shaped connecting frame is welded to the front end of the annular cover. And a baffle plate corresponding to the L-shaped connecting frame is arranged on the annular cover. As a filling aggregate for the hook head part of the end part of the casting blank, the filling aggregate has the effect of quickly reducing the casting blank temperature of the hook head part of the end part of the casting blank, improves the mechanical strength of the hook head part of the end part of the casting blank, ensures reliable connection, ensures successful cold start of a continuous casting machine, reduces cold start accidents, improves the operation rate of the continuous casting machine and reduces the cost of a continuous casting process.

Description

Technical Field

[0001] This utility model relates to the field of steelmaking continuous casting equipment, and in particular to a cold start billet pulling connection device for a large round billet continuous casting machine. Background Technology

[0002] Continuous casting machines are key equipment in the metallurgical industry used to continuously cast liquid metal into billets of specific shapes. They achieve efficient and continuous production through solidification forming technology. In the production of large round billets, a billet pulling device is required for cold starts of the continuous casting machine. The principle of billet pulling is to use the dummy bar to pull the end of the billet. A connector is needed to connect the dummy bar and the billet. The connector is for single use. Due to the high temperature, the connection between the end of the billet and the dummy bar is not strong enough to transmit the power required for billet pulling, which can easily lead to cold start leakage accidents. Small cross-section continuous casting machines usually use about 10cm of threaded steel to fill the gap during cold starts. This connection strength is insufficient for the cold start of large round billets. Therefore, it is particularly necessary to design a billet pulling connection device for cold starts of large round billet continuous casting machines that can serve as filler aggregate for the hook part of the billet end, while quickly reducing the billet temperature at the hook part of the billet end, improving the mechanical strength of the hook part of the billet end, and ensuring reliable connection. Summary of the Invention

[0003] The purpose of this utility model is to provide a cold start billet pulling connection device for a large round billet continuous casting machine, which can quickly reduce the billet temperature at the end hook of the billet, improve the mechanical strength of the end hook of the billet, ensure reliable connection, and ensure successful cold start of the continuous casting machine.

[0004] The technical solution adopted is as follows:

[0005] A cold start billet pulling connection device for a large round billet continuous casting machine includes an annular cover, which is made of welded steel bars. An end cap, also made of welded steel bars, is connected to the rear end of the annular cover. An L-shaped connecting frame is welded to the front end of the annular cover, and a baffle corresponding to the L-shaped connecting frame is provided on the annular cover.

[0006] Preferably, the end cap is made of multiple concentrically arranged steel rings welded together, and multiple connecting beams are provided between adjacent steel rings.

[0007] Preferably, the end of the L-shaped connecting frame is provided with a guide cylinder.

[0008] Compared to existing technologies, the advantages are:

[0009] This utility model connects to the end of the billet, which reduces the temperature of the billet end, increases the connection strength between the billet end and the connecting device, and ensures the connection strength between the billet end and the connecting device. The connecting device is connected to the dummy bar head using an L-shaped connecting frame. The dummy bar head is connected to the traction equipment in the workshop through a chain. The traction equipment pulls the dummy bar head to realize the cold start of the continuous casting machine. The high connection strength between the billet end and the connecting device ensures a successful cold start. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural schematic diagram of the connecting component of a cold start billet pulling connection device for a large round billet continuous casting machine according to this utility model.

[0011] Figure 2 This is a cross-sectional structural diagram of the connecting component of a cold start billet pulling connection device for a large round billet continuous casting machine according to this utility model.

[0012] Figure 3 This is a side view of the connecting component of a cold start billet pulling connection device for a large round billet continuous casting machine according to this utility model.

[0013] Figure 4 This is a bottom view schematic diagram of the connecting component of a cold start billet pulling connection device for a large round billet continuous casting machine according to this utility model.

[0014] In the diagram: 1. Annular cover; 2. End cap; 3. Steel ring; 4. Connecting beam; 5. L-shaped connecting frame; 6. Baffle; 7. Guide cylinder. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 4 As shown:

[0016] Example 1: A cold start billet pulling connection device for a large round billet continuous casting machine includes an annular cover 1, which is made of welded steel bars. An end cover 2 is connected to the rear end of the annular cover 1. The end cover 2 is fixedly connected to the annular cover 1. The end cover 2 is also made of welded steel bars. Multiple crossbars are provided between the end cover 2 and the annular cover 1 to form an integral whole.

[0017] An L-shaped connecting frame 5 is welded to the front end of the annular cover 1. The L-shaped connecting frame 5 is connected to the annular cover 1 by welding. The annular cover 1 is equipped with baffles 6 corresponding to the front and rear of the L-shaped connecting frame 5. The baffles 6 are made of thick steel plates. When the large round billet continuous casting machine is cold-started, the connecting device is brought into contact with the end of the billet. The high-temperature end of the billet fuses with the connecting device. During the fusion process, the temperature of the end of the billet is reduced, and the connection strength between the end of the billet and the connecting device is increased. The connecting device is connected to the dummy bar head through the L-shaped connecting frame 5. The dummy bar head is connected to the traction equipment in the workshop through a chain. The traction equipment pulls the dummy bar head to realize the cold start of the continuous casting machine.

[0018] Example 2: A cold start billet pulling connection device for a large round billet continuous casting machine includes an annular cover 1, which is made of welded steel bars. An end cap 2 is connected to the rear end of the annular cover 1 and is fixedly connected to the annular cover 1. The end cap 2 is also made of welded steel bars and is made of multiple concentrically arranged steel rings 3. Each ring is tightly connected to the high-temperature end of the billet, resulting in high connection strength. Multiple connecting beams 4 are provided between adjacent steel rings 3, and multiple crossbars are provided between the end cap 2 and the annular cover 1 to form an integral whole.

[0019] An L-shaped connecting frame 5 is welded to the front end of the annular cover 1. A guide cylinder 7 is provided at the end of the L-shaped connecting frame 5. The guide cylinder 7 facilitates the connection between the L-shaped connecting frame 5 and the dummy bar head. The L-shaped connecting frame 5 and the annular cover 1 are connected by welding. The annular cover 1 is provided with baffles 6 corresponding to the front and rear of the L-shaped connecting frame 5. The baffles 6 are made of thick steel plate. When the large round billet continuous casting machine is cold-started, the connecting device is brought into contact with the end of the billet. The high-temperature end of the billet fuses with the connecting device. During the fusion process, the temperature of the end of the billet is reduced, and the connection strength between the end of the billet and the connecting device is increased. The connecting device is connected to the dummy bar head through the L-shaped connecting frame 5. The dummy bar head is connected to the traction equipment in the workshop through a chain. The traction equipment pulls the dummy bar head to realize the cold start of the continuous casting machine.

[0020] The specific working process is as follows: When the continuous casting machine is cold-started, the L-shaped connecting frame 5 is connected to the dummy bar head, and the dummy bar head moving connecting device is used to fuse with the end of the billet. During the fusion process, the temperature of the end of the billet is reduced, and the connection strength between the end of the billet and the connecting device is increased. The traction equipment pulls the dummy bar head through the chain to pull out the billet and complete the cold start of the large round billet continuous casting machine.

[0021] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A cold start billet pulling connection device for a large round billet continuous casting machine, characterized in that: It includes an annular cover (1), which is made of steel bars welded together. An end cap (2) is connected to the rear end of the annular cover (1), which is also made of steel bars welded together. An L-shaped connecting frame (5) is welded to the front end of the annular cover (1), and a baffle (6) corresponding to the L-shaped connecting frame (5) is provided on the annular cover (1).

2. The cold start billet pulling connection device for a large round billet continuous casting machine as described in claim 1, characterized in that: The end cap (2) is made by welding multiple concentrically arranged steel rings (3), and multiple connecting beams (4) are provided between adjacent steel rings (3).

3. The cold start billet pulling connection device for a large round billet continuous casting machine as described in claim 1, characterized in that: The L-shaped connecting frame (5) is provided with a guide cylinder (7) at its end.

Images