Vacuum consumable electrode furnace for double-vacuum steelmaking

Abstract

The utility model relates to the technical field of steelmaking, in particular to a self-consuming vacuum furnace for double-vacuum steelmaking, which comprises a base, an annular frame is fixedly connected to the upper surface of the base, a slewing bearing is fixedly connected to the upper surface of the annular frame, and a connecting plate is fixedly connected to the outer ring part of the slewing bearing. The upper surface of the base is fixedly connected with a connecting plate, the upper surface of the connecting plate is fixedly connected with a lifting frame, the interior of the lifting frame is slidably connected with a connecting frame, one end of the connecting frame is fixedly connected with a furnace body, the lower surface of the base is fixedly connected with a stepping motor, and the inner side surface of the connecting frame is fixedly connected with a transverse plate. When the lifting frame rotates, the position of the furnace body is changed, the frame bodies move synchronously, the frame bodies are matched with the contact module to limit the cable, the shaking amplitude of the cable is reduced, the probability that a connector is loosened is reduced, the two frame bodies can be turned over outwards, and blocking is avoided when the frame bodies maintain the cable or related pipelines.

Description

Technical Field

[0001] This utility model relates to the field of steelmaking technology, specifically a vacuum self-consuming furnace for double-vacuum steelmaking. Background Technology

[0002] In the double vacuum steelmaking process, the vacuum arc furnace melts metal in a vacuum environment, which can further remove gaseous impurities such as hydrogen, oxygen, and nitrogen from the metal, making the metal purer. In order to improve the efficiency of the device, the position of the furnace body in the prior art can be changed to adapt to the crystallization seat in different positions. However, the existing devices have certain drawbacks. For example, the vacuum arc furnace rotary lifting device described in announcement number CN219977073U has a synchronous belt tensioning mechanism fixed on both the left and right sides of the lower part of the rotating column support. The synchronous belt tensioning mechanism is connected to the synchronous belt. A drive device is installed on the upper end of the base behind the rotating column support. The synchronous belt is connected to the drive device. Spring buffers are fixed on the upper end of the base on both the left and right sides of the rotating column support. A proximity switch connected to the drive device is installed in the spring buffer.

[0003] Although the above-mentioned device can rotate the vacuum melting chamber of the vacuum arc furnace to different crystallizers to meet the needs of the workers, it does not limit the cables on the outer surface of the furnace body during the process. The high rotation of the furnace body is affected by inertia, and the cables sway significantly, which can easily lead to loosening of the cable joints. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum arc furnace for double-vacuum steelmaking, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A vacuum arc furnace for double-vacuum steelmaking includes a base, a ring frame fixedly connected to the upper surface of the base, a slewing bearing fixedly connected to the upper surface of the ring frame, a connecting plate fixedly connected to the outer ring of the slewing bearing, a lifting frame fixedly connected to the upper surface of the connecting plate, a connecting frame slidably connected inside the lifting frame, a furnace body fixedly connected to one end of the connecting frame, and a stepper motor fixedly connected to the lower surface of the base.

[0007] A horizontal plate is fixedly connected to the inner surface of the connecting frame. Two frames are rotatably connected to the upper surface of the horizontal plate. A frame rod is fixedly connected to the inner surface of the frame. A contact module is nested on the outer surface of the frame rod. The contact module includes a first clamping plate and a second clamping plate. The first clamping plate is nested on the outer surface of the frame rod. A screw is fixedly connected to the front surface of the first clamping plate. The second clamping plate is nested on the outer surface of the frame rod. A handwheel is threaded onto the outer surface of the screw. The handwheel is in contact with the second clamping plate.

[0008] Furthermore, the upper surface of the base is provided with mounting holes.

[0009] Furthermore, the outer surface of the ring frame is fixedly connected with meshing teeth, and the output end of the stepper motor is fixedly connected with a first gear. The first gear is meshed with the outer ring portion of the slewing bearing, and the inner ring portion of the slewing bearing is fixedly connected to the ring frame.

[0010] Furthermore, a motor reducer is fixedly connected to the upper surface of the lifting frame, a lead screw is fixedly connected to the output end of the motor reducer, the connecting frame and the lead screw are threadedly connected, and the connecting frame and the lifting frame are slidably connected.

[0011] Furthermore, a rotating shaft is embedded in the side surface of the frame, the rotating shaft is rotatably connected to the cross plate, a second gear is fixedly connected to the lower end of the rotating shaft, a limit plate is rotatably connected to the lower surface of the rotating shaft, a third gear is rotatably connected to the lower surface of the limit plate, and the third gear meshes with one of the second gears.

[0012] Furthermore, the contact module also includes an inner rod, an outer rod, and a fastening knob. The inner rod is fixedly connected to the rear surface of the first clamping plate, the outer rod is nested and slidably connected to the outer surface of the inner rod, and the fastening knob is threadedly connected to the upper surface of the outer rod.

[0013] Furthermore, one end of the fastening knob contacts the inner rod, and a buffer pad is fixedly connected to the rear surface of the outer rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When the lifting frame rotates, the position of the furnace body changes, and the frame moves synchronously. The frame, together with the contact module, limits the cable, reduces the amplitude of cable swaying, and reduces the probability of loosening of the joint. Manually rotate the handwheel to separate the handwheel from the No. 2 clamp plate. Adjust the distance between the No. 2 clamp plate and the No. 1 clamp plate, and you can manually change the position of the contact module along the frame rod, improving the adjustability of the contact module.

[0016] 2. When it is necessary to unfold the frame to maintain the cables on the outer surface of the furnace body, the frame moves along the outer surface of the ring frame under the drive of the first gear, and the third gear and the meshing teeth mesh, so that the third gear drives one of the second gears to rotate, and the second gear drives the second gear on another rotating shaft to rotate, so that the two frames flip outward, avoiding obstruction when the frame is used to repair cables or related pipes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the frame structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the unfolded frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the lifting frame of this utility model;

[0021] Figure 5 This is a schematic diagram of the disassembled frame structure of this utility model.

[0022] In the diagram: 1. Base; 101. Mounting hole; 2. Ring frame; 201. Meshing gear; 202. Slewing bearing; 203. Connecting plate; 3. Lifting frame; 301. Motor reducer; 302. Lead screw; 4. Stepper motor; 401. First gear; 5. Connecting frame; 501. Horizontal plate; 6. Furnace body; 7. Frame body; 701. Frame rod; 702. Rotating shaft; 703. Limiting plate; 704. Second gear; 705. Third gear; 8. Contact module; 801. No. 1 clamping plate; 802. Screw; 803. Handwheel; 804. No. 2 clamping plate; 805. Inner rod; 806. Outer rod; 807. Fastening knob; 808. Buffer pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5In this embodiment of the present invention, a vacuum self-consuming furnace for double vacuum steelmaking includes a base 1, a ring frame 2 fixedly connected to the upper surface of the base 1, a slewing bearing 202 fixedly connected to the upper surface of the ring frame 2, a connecting plate 203 fixedly connected to the outer ring of the slewing bearing 202, a lifting frame 3 fixedly connected to the upper surface of the connecting plate 203, a connecting frame 5 slidably connected inside the lifting frame 3, a furnace body 6 fixedly connected to one end of the connecting frame 5, and a stepper motor 4 fixedly connected to the lower surface of the base 1.

[0025] A horizontal plate 501 is fixedly connected to the inner surface of the connecting frame 5. Two frames 7 are rotatably connected to the upper surface of the horizontal plate 501. A frame rod 701 is fixedly connected to the inner surface of the frame 7. A contact module 8 is nested on the outer surface of the frame rod 701. The contact module 8 includes a first clamping plate 801 and a second clamping plate 804. The first clamping plate 801 is nested on the outer surface of the frame rod 701. A screw 802 is fixedly connected to the front surface of the first clamping plate 801. The second clamping plate 804 is nested on the outer surface of the frame rod 701. A handwheel 803 is threadedly connected to the outer surface of the screw 802. The handwheel 803 is in contact with the second clamping plate 804.

[0026] Specifically, in the double-vacuum steelmaking process, the vacuum arc furnace melts metal in a vacuum environment, which can further remove gaseous impurities such as hydrogen, oxygen, and nitrogen from the metal, resulting in higher metal purity. To improve the efficiency of the device, the position of the furnace body 6 in the prior art can be changed to adapt to different crystallization seats. However, when changing the position, the pipes on the furnace body 6 swing synchronously. If no limiting is implemented, it is easy to cause the joints to loosen. Based on this, in this application, the lifting frame 3 is connected to the outer ring of the connecting plate 203 and the slewing bearing 202 to realize the relative rotation of the lifting frame 3 and the ring frame 2, stepping... Motor 4 provides power for the rotation of lifting frame 3. Lifting frame 3 can drive connecting frame 5 to rise or fall for steel discharge. When lifting frame 3 rotates, the position of furnace body 6 changes and frame 7 moves synchronously. Frame 7, in conjunction with contact module 8, limits the cable, reduces the amplitude of cable sway, and reduces the probability of loose joints. Manually rotating handwheel 803 separates handwheel 803 from clamp 804. Adjusting the distance between clamp 804 and clamp 801 allows manual adjustment of the position of contact module 8 along frame rod 701, improving the adjustability of contact module 8.

[0027] Example 1

[0028] like Figure 1-5 As shown, the upper surface of the base 1 has a mounting hole 101.

[0029] In this embodiment, the device is fixed to the ground by fitting the mounting hole 101 and the external threaded assembly, thereby improving the stability of the device.

[0030] like Figure 1-4As shown, a motor reducer 301 is fixedly connected to the upper surface of the lifting frame 3, and a lead screw 302 is fixedly connected to the output end of the motor reducer 301. The connecting frame 5 and the lead screw 302 are threadedly connected, and the connecting frame 5 and the lifting frame 3 are slidably connected.

[0031] In this embodiment, the motor reducer 301 is started, and the output end of the motor reducer 301 drives the lead screw 302 to rotate. Under the push of the screw, the connecting frame 5 drives the furnace body 6 to rise or fall.

[0032] like Figure 1-5 As shown, meshing teeth 201 are fixedly connected to the outer surface of the ring frame 2, and a first gear 401 is fixedly connected to the output end of the stepper motor 4. The first gear 401 is meshed with the outer ring of the slewing bearing 202, and the inner ring of the slewing bearing 202 is fixedly connected to the ring frame 2. A rotating shaft 702 is embedded in the side surface of the frame 7. The rotating shaft 702 is rotatably connected to the horizontal plate 501. A second gear 704 is fixedly connected to the lower end of the rotating shaft 702. The two second gears 704 are meshed. A limit plate 703 is rotatably connected to the lower surface of the rotating shaft 702. A third gear 705 is rotatably connected to the lower surface of the limit plate 703. The third gear 705 is meshed with one of the second gears 704.

[0033] In this embodiment, the stepper motor 4 is started, and the output end of the stepper motor 4 drives the first gear 401 to rotate. The first gear 401 drives the outer ring of the slewing bearing 202 to rotate, thereby changing the angle of the lifting frame 3 and further changing the angle of the furnace body 6. When it is necessary to unfold the frame 7 to maintain the cables on the outer surface of the furnace body 6, the frame 7 moves along the outer surface of the ring frame 2 under the drive of the first gear 401. The third gear 705 meshes with the meshing tooth 201, causing the third gear 705 to drive one of the second gears 704 to rotate. The second gear 704 drives the second gear 704 on the other rotating shaft 702 to rotate, causing the two frames 7 to flip outward, avoiding obstruction when the frames 7 are used to maintain the cables or related pipes. It should be noted that the number of teeth of the third gear 705 is less than the number of teeth of the second gear 704, and the transmission ratio is used to assist in limiting the frame 7.

[0034] Example 2

[0035] Based on Embodiment 1, in order to overcome the problem that the frame 7 in Embodiment 1 is not convenient for targeted limiting of cables at different positions.

[0036] like Figure 1-5As shown, the contact module 8 also includes an inner rod 805, an outer rod 806, and a fastening knob 807. The inner rod 805 is fixedly connected to the rear surface of the first clamping plate 801. The outer rod 806 is nested and slidably connected to the outer surface of the inner rod 805. The fastening knob 807 is threadedly connected to the upper surface of the outer rod 806. One end of the fastening knob 807 is in contact with the inner rod 805. A buffer pad 808 is fixedly connected to the rear surface of the outer rod 806.

[0037] In this embodiment, based on the fact that the contact module 8 can slide along the frame rod 701, the fastening knob 807 can be manually rotated to separate one end of the fastening knob 807 from the inner rod 805, and the outer rod 806 can be manually slid outward to further change the position of the buffer pad 808, so that the buffer pad 808 can contact the cable at different positions, thereby improving the limiting effect of the frame 7 on the cable.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vacuum self-consuming furnace for double vacuum steelmaking, comprising a base (1), a ring frame (2) fixedly connected to the upper surface of the base (1), a slewing bearing (202) fixedly connected to the upper surface of the ring frame (2), a connecting plate (203) fixedly connected to the outer ring of the slewing bearing (202), a lifting frame (3) fixedly connected to the upper surface of the connecting plate (203), a connecting frame (5) slidably connected inside the lifting frame (3), a furnace body (6) fixedly connected to one end of the connecting frame (5), and a stepper motor (4) fixedly connected to the lower surface of the base (1); Its features are, A horizontal plate (501) is fixedly connected to the inner surface of the connecting frame (5). Two frames (7) are rotatably connected to the upper surface of the horizontal plate (501). A frame rod (701) is fixedly connected to the inner surface of the frame (7). A contact module (8) is nested on the outer surface of the frame rod (701). The contact module (8) includes: A first clamping plate (801) is nested and connected to the outer surface of the frame rod (701), and a screw (802) is fixedly connected to the front surface of the first clamping plate (801); The second clamping plate (804) is nested and connected to the outer surface of the frame rod (701). The outer surface of the screw (802) is threaded with a handwheel (803), and the handwheel (803) is in contact with the second clamping plate (804).

2. The vacuum arc furnace for double-vacuum steelmaking according to claim 1, characterized in that, The upper surface of the base (1) is provided with mounting holes (101).

3. The vacuum arc furnace for double-vacuum steelmaking according to claim 1, characterized in that, The outer surface of the ring frame (2) is fixedly connected with meshing teeth (201), and the output end of the stepper motor (4) is fixedly connected with a first gear (401). The first gear (401) is meshed with the outer ring of the slewing bearing (202), and the inner ring of the slewing bearing (202) is fixedly connected to the ring frame (2).

4. The vacuum arc furnace for double-vacuum steelmaking according to claim 1, characterized in that, A motor reducer (301) is fixedly connected to the upper surface of the lifting frame (3), and a lead screw (302) is fixedly connected to the output end of the motor reducer (301). The connecting frame (5) and the lead screw (302) are threadedly connected, and the connecting frame (5) and the lifting frame (3) are slidably connected.

5. The vacuum arc furnace for double-vacuum steelmaking according to claim 1, characterized in that, A rotating shaft (702) is embedded in the side surface of the frame (7). The rotating shaft (702) is rotatably connected to the horizontal plate (501). A second gear (704) is fixedly connected to the lower end of the rotating shaft (702). A limiting plate (703) is rotatably connected to the lower surface of the rotating shaft (702). A third gear (705) is rotatably connected to the lower surface of the limiting plate (703). The third gear (705) meshes with one of the second gears (704).

6. The vacuum arc furnace for double-vacuum steelmaking according to claim 1, characterized in that, The contact module (8) also includes: The inner rod (805) is fixedly connected to the rear surface of the first clamping plate (801); The outer rod (806) is nested and slidably connected to the outer surface of the inner rod (805); The fastening knob (807) is threaded onto the upper surface of the outer rod (806).

7. The vacuum arc furnace for double-vacuum steelmaking according to claim 6, characterized in that, One end of the fastening knob (807) is in contact with the inner rod (805), and a buffer pad (808) is fixedly connected to the rear surface of the outer rod (806).

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