High-strength electrode chuck shaft

Abstract

The utility model discloses a high-strength electrode chuck shaft which comprises a main shaft and a connecting shaft, and the main shaft is indirectly clamped on a furnace body rotating arm. The shaft head is located at the end, away from the main shaft, of the connecting shaft and used for being connected with a furnace body rotating arm in a clamping mode. A plurality of limiting shoulders are arranged between the shaft head and the connecting shaft; the reinforcing assembly comprises an annular groove formed in the main shaft, a reinforcing ring is arranged on the annular groove, a plurality of mounting seats are arranged on the reinforcing ring in the circumferential direction, connecting support arms are detachably arranged in the mounting seats and extend to the outer side of the shaft head, assembly holes are formed in the ends of the connecting support arms, and the connecting support arms can be detachably connected with a furnace body rotating arm. On the basis that clamping is stable and not prone to breakage, further connection and fixation of the main shaft are added, secondary protection is formed, and therefore the whole shaft is not prone to disengagement and breakage.

Description

Technical Field

[0001] This utility model relates to the field of click clamp technology, specifically to a high-strength electrode chuck shaft. Background Technology

[0002] An LF furnace is a refining device that utilizes electric arc heating technology, primarily used for further refining primary molten steel. The refining process in an Lf furnace includes heating, fine-tuning of alloy composition, desulfurization, deoxidation, slag formation, inclusion control, and temperature homogenization to improve steel quality. The Lf furnace is characterized by a rational combination of refining technologies and flexible smelting processes, significantly improving the purity and compositional stability of molten steel.

[0003] The electrode chuck shaft connects the furnace rotating arm to the electrode body, ensuring the stability and conductivity of the electrode during the smelting process. In practical use, the furnace rotating arm fixes the electrode via the chuck shaft, typically using a U-shaped clamp and corresponding fasteners for clamping. However, in existing technologies, due to the extremely high operating temperature, the shaft end is prone to deformation due to heat, reducing structural strength and causing it to break, resulting in the electrode loosening and falling off, thus affecting the operation. Utility Model Content

[0004] This invention aims to solve the aforementioned technical problem that the shaft end of the electrode chuck is prone to breakage due to heat deformation and reduced structural strength, and provides a solution for the problem that the shaft end is prone to breakage due to heat deformation and reduced structural strength.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a high-strength electrode chuck shaft, including a main shaft and a connecting shaft, wherein the main shaft is indirectly clamped on the furnace body rotating arm; the main shaft and the connecting shaft are fixedly connected; and the diameter of the connecting shaft is smaller than that of the main shaft, and a limiting plate is provided at the end of the main shaft away from the connecting shaft; further comprising:

[0006] Shaft head; located at the end of the connecting shaft away from the main shaft, used for clamping and connecting with the furnace body rotating arm; several limiting shoulders are provided between the shaft head and the connecting shaft;

[0007] The reinforcement component includes an annular groove on the main shaft, a reinforcement ring on the annular groove, and several mounting seats along the circumference of the reinforcement ring. Each mounting seat has a detachable connecting arm. The connecting arms extend to the outside of the shaft head and have mounting holes at their ends, and can be detachably connected to the furnace body rotating arm.

[0008] Furthermore, the shaft head is made of 42CrMo material and has a diameter of 55mm.

[0009] Furthermore, all the limiting shoulders are annular in shape, and their outer diameters are all different.

[0010] Furthermore, the longitudinal section of the shaft head is T-shaped, and an installation stop is provided at the end away from the connecting shaft. The end of the installation stop away from the shaft head has a smooth transition.

[0011] Furthermore, a graphite electrode is provided on the outer side of the main shaft, and an anti-oxidation coating is provided on the surface of the graphite electrode.

[0012] Furthermore, the inner surface of the reinforcing ring is serrated, and the surface of the annular groove is serrated to mate with the inner surface of the reinforcing ring; the mounting base consists of two symmetrical support plates, each with mounting holes that connect to the corresponding connecting arm.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] A reinforcing ring is set on the outside of the main shaft, and multiple connecting arms are set on the outside of the reinforcing ring. In this way, when the furnace body is in operation, the main shaft and the furnace body rotating arm are further fixed on the basis of the conventional clamping of the shaft head by the furnace body rotating arm.

[0015] Furthermore, based on the above, the material and specifications of the shaft head are upgraded, making it not only stable and not easily broken by clamping itself, but also adding a further connection and fixation to the main shaft, forming a second layer of protection, so that the shaft as a whole is not easy to detach and break. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the connecting shaft and shaft head structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the reinforcement component structure of this utility model.

[0019] As shown in the figure: 1. Main spindle, 2. Connecting shaft, 3. Limiting plate, 4. Shaft head, 5. Limiting shoulder, 6. Mounting block, 7. Annular groove, 8. Reinforcing ring, 9. Mounting seat, 10. Connecting support arm. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] Example 1, in conjunction with Appendix Figure 1 A high-strength electrode chuck shaft includes a main shaft 1 and a connecting shaft 2. The main shaft 1 is indirectly clamped on the furnace body rotating arm. A graphite electrode is provided on the outside of the main shaft 1, and an anti-oxidation coating is provided on the surface of the graphite electrode.

[0022] In actual operation, the shaft head 4 mentioned below is clamped by the furnace body rotating arm and the clamping structure at the end, thereby fixing the main shaft 1 and driving the main shaft 1 and the electrodes outside the main shaft 1 to extend into the furnace body for smelting operations.

[0023] The main spindle 1 and the connecting shaft 2 are fixedly connected; and the diameter of the connecting shaft 2 is smaller than that of the main spindle 1, and a limiting plate 3 is provided at the end of the main spindle 1 away from the connecting shaft 2;

[0024] Combined with appendix Figure 1 , 2 It also includes a shaft head 4; located at the end of the connecting shaft 2 away from the main shaft 1, used for clamping and connecting with the furnace body rotating arm; several limiting shoulders 5 are provided between the shaft head 4 and the connecting shaft 2, all of which are annular and have different outer diameters, to improve the resistance to stress and ensure structural strength; the longitudinal section of the shaft head 4 is T-shaped, and a mounting block 6 is provided at the end away from the connecting shaft 2, with a smooth transition at the end of the mounting block 6 away from the shaft head 4;

[0025] In the above structure, the combined action of the limiting shoulder 5 and the mounting block 6 makes the shaft head 4 a concave part with a small diameter, which makes it easier to limit the clamping part of the furnace body rotating arm, so that it is clamped stably and not easy to slip off.

[0026] In addition, the shaft head 4 is made of 42CrMo material with a diameter of 55mm. Compared with the more common 45 material and 50 diameter, 42CrMo material has higher strength, better toughness and wear resistance, and higher comprehensive mechanical properties. Increasing the diameter further improves the structural strength.

[0027] Combined with appendix Figure 1 , 3 It also includes a reinforcing component; including an annular groove 7 on the main shaft 1, a reinforcing ring 8 on the annular groove 7, and several mounting seats 9 along the circumference on the reinforcing ring 8. Each mounting seat 9 is detachably provided with a connecting arm 10. The connecting arm 10 extends to the outside of the shaft head 4 and has an assembly hole at its end, and can be detachably connected to the furnace body rotating arm.

[0028] In the above structure, after the furnace body rotating arm is normally clamped and installed at the shaft head 4, the extended connecting support arm 10 is connected to the clamping part of the furnace body rotating arm, so that the force originally borne by the shaft head 4 is distributed to the main shaft 1. Thus, when the structural strength of the shaft head 4 is reduced, the main shaft 1 can still achieve connection and support, making the shaft as a whole and the electrode less likely to loosen and fall off, thus improving practicality.

[0029] In addition, the inner surface of the reinforcing ring 8 is serrated, and the surface of the annular groove 7 is also serrated to match the inner surface of the reinforcing ring 8; the mounting base 9 consists of two symmetrical support plates, each with an assembly hole, which is connected to the corresponding connecting arm 10; thereby improving the firmness of the connection between the annular groove 7 and the reinforcing ring 8, making it less prone to torsion under stress.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-strength electrode chuck shaft, comprising a main shaft (1) and a connecting shaft (2), wherein the main shaft (1) is indirectly clamped on the furnace body rotating arm; characterized in that: The main shaft (1) and the connecting shaft (2) are fixedly connected; and the diameter of the connecting shaft (2) is smaller than that of the main shaft (1), and a limiting plate (3) is provided at the end of the main shaft (1) away from the connecting shaft (2); it also includes: Shaft head (4); located at the end of the connecting shaft (2) away from the main shaft (1), used for clamping and connecting with the furnace body rotating arm; a number of limiting shoulders (5) are provided between the shaft head (4) and the connecting shaft (2); The reinforcement component includes an annular groove (7) on the main shaft (1), a reinforcement ring (8) on the annular groove (7), and a plurality of mounting seats (9) on the reinforcement ring (8) along the circumferential direction. Each mounting seat (9) is detachably provided with a connecting arm (10). The connecting arms (10) extend to the outside of the shaft head (4) and are provided with mounting holes at their ends, and can be detachably connected to the furnace body rotating arm.

2. The high-strength electrode chuck shaft according to claim 1, characterized in that: The shaft head (4) is made of 42CrMo material and has a diameter of 55mm.

3. The high-strength electrode chuck shaft according to claim 1, characterized in that: The limiting shoulders (5) are all annular, and their outer diameters are all different.

4. A high-strength electrode chuck shaft according to claim 1, characterized in that: The longitudinal section of the shaft head (4) is T-shaped, and an installation block (6) is provided at the end away from the connecting shaft (2). The end of the installation block (6) away from the shaft head (4) is smoothly transitioned.

5. A high-strength electrode chuck shaft according to claim 1, characterized in that: The main shaft (1) is provided with a graphite electrode on its outer side, and the surface of the graphite electrode is provided with an anti-oxidation coating.

6. A high-strength electrode chuck shaft according to claim 1, characterized in that: The inner surface of the reinforcing ring (8) is serrated, and the surface of the annular groove (7) is serrated to fit with the inner surface of the reinforcing ring (8); the mounting base (9) consists of two symmetrical support plates, each with an assembly hole and connected to the corresponding connecting arm (10).

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