Lifting equipment for RH refining furnace

Abstract

The utility model relates to the field of RH refining furnace lifting equipment, and discloses RH refining furnace lifting equipment which comprises a lifting component, an adjusting component and a steel ladle, the steel ladle is clamped on the outer surface of the upper portion of the lifting component, and the bottom of the lifting component is installed inside the top of the adjusting component in a sliding mode. The lifting component comprises a limiting frame, a winding drum and supporting rollers, the supporting rollers are fixedly installed at the two ends of the bottom face of the limiting frame, the winding drum is rotationally clamped to the upper surface of the center of the bottom of the limiting frame, a lifting frame is slidably installed on the outer surface of the limiting frame, and a traction rope is wound on the outer surface of the winding drum. According to the lifting device for the RH refining furnace, through matched operation between the lifting component and the adjusting component, steel ladles with different sizes can be lifted in a matched mode through the lifting device for the RH refining furnace, so that the application range of the lifting device is widened, and meanwhile the using requirements of people are met.

Description

Technical Field

[0001] The utility model relates to the field of RH refining furnace lifting equipment, in particular to a device used for lifting a RH refining furnace. Background Art

[0002] RH refining furnace, full name RH vacuum cycle degassing refining device, is an important equipment for refining molten steel outside the furnace, mainly used to produce low-carbon, low-nitrogen, low-hydrogen steel, such as large forging steel, thick plate steel, silicon steel, bearing steel, etc. RH refining furnace plays an indispensable role in steelmaking production and can solve some problems that cannot be solved by converter smelting.

[0003] The RH refining furnace is mainly composed of the following systems: Ladle transport system: responsible for transporting the ladle containing molten steel to the RH refining furnace for processing. Ladle lifting system: used to adjust the height of the ladle so that the circulation pipe can be inserted into the molten steel for degassing. Vacuum tank system: including components such as vacuum chamber and circulation pipe, it is the main place for degassing of molten steel. Vacuum pump system: used to evacuate the vacuum chamber to form a negative pressure environment so that the molten steel can smoothly enter the vacuum chamber for degassing. Ferroalloy addition system.

[0004] The RH refining furnace needs to use a ladle lifting system during operation. The ladle lifting system plays a vital role in the degassing process of molten steel. The system is mainly responsible for accurately transporting the ladle containing molten steel to the RH refining furnace or other degassing equipment for processing, and safely removing it after the processing is completed. However, the existing RH refining furnace ladle lifting system can only lift the ladle in the RH refining furnace during use, and the size of the lifting equipment is fixed and cannot be adjusted, so it cannot lift ladles of different sizes, so it cannot meet people's use needs. Utility Model Content

[0005] The utility model aims to provide a device for lifting an RH refining furnace, and solve the following technical problem: how to make the RH refining furnace ladle lifting system adapt to and lift ladles of different sizes.

[0006] The purpose of the utility model can be achieved by the following technical solutions: a device for lifting a RH refining furnace, comprising: a lifting component, an adjusting component and a ladle, wherein the ladle is clamped on the upper outer surface of the lifting component, and the bottom of the lifting component is slidably installed inside the top of the adjusting component;

[0007] The lifting component comprises a limit frame, a winding drum and a supporting roller, the supporting rollers are fixedly mounted at two ends of the bottom surface of the limit frame, the winding drum is rotatably clamped on the upper surface of the bottom center of the limit frame, the outer surface of the limit frame is slidably mounted with a lifting frame, the outer surface of the winding drum is wound with a traction rope, the bottom center of the limit frame is symmetrically arranged with a supporting roller, the bottom surface of the limit frame and the edge of the supporting roller are provided with a limiting clamping block, the side center of the lifting frame is provided with a clamping groove, one end surface of the winding drum is provided with a limiting sleeve hole, the bottom side center of the limit frame is provided with a threaded hole, and the top outer surface of the limit frame is provided with a guide wheel;

[0008] The adjusting component includes a first drive motor, a second drive motor and a support frame, the second drive motor and the first drive motor are respectively fixedly mounted on the two end surfaces of the support frame, a limiting slide groove is provided at the top center of the support frame, and limiting slideways are provided on both sides of the upper surface of the support frame, a transmission shaft is fixedly connected to the interior of the support frame and at one end of the second drive motor, and a threaded rod is fixedly connected to the other end of the support frame and at one end of the first drive motor.

[0009] As a preferred solution of the utility model: the traction rope is slidably overlapped on the outer surface of the guide wheel, and one end of the traction rope is fixedly connected to the top center of the lifting frame.

[0010] As a preferred solution of the utility model: the winding drum is slidably sleeved on the outer surface of the transmission shaft through a limiting sleeve hole.

[0011] As a preferred solution of the utility model: the limiting frame is threadedly connected to the outer surface of the threaded rod through the threaded hole at the bottom.

[0012] As a preferred solution of the utility model: the limit frame is slidably connected to the inner bottom end of the support frame through a limit clamping block at the bottom.

[0013] As a preferred solution of the utility model: the threads on the outer surfaces of both ends of the threaded rod are symmetrically arranged, and the limiting frame is slidably connected with the supporting frame through a limiting slideway.

[0014] As a preferred solution of the utility model: the traction rope is slidably connected to the top center of the support frame through a limiting slide groove.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model can control the lifting of the steel ladle by arranging a lifting component inside the adjusting component, and can adjust the distance between the limit frames in cooperation with the adjusting component, so that the lifting component can lift the steel ladles with different spacings, thereby expanding the use range of the lifting equipment, and by arranging a winding drum at the bottom of the limit frame, the lifting frame can be controlled to be raised and lowered when the transmission shaft rotates, and the limit frame can slide on the outer surface of the transmission shaft when the threaded rod rotates, so as to ensure that the spacing between the limit frames is suitable for the steel ladle;

[0017] (2) The utility model can adapt and lift ladles of different sizes to the RH refining furnace lifting equipment through the coordinated operation between the lifting component and the adjusting component, thereby expanding the use scope of the lifting equipment and meeting people's use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the lifting equipment structure of the RH refining furnace;

[0020] Figure 2 It is a schematic diagram of the lifting component structure;

[0021] Figure 3 This is a schematic diagram of the back structure of the lifting component;

[0022] Figure 4 This is a schematic diagram of the cross-section structure of the adjustment component.

[0023] Description of the drawings: 1. Lifting component; 2. Adjusting component; 3. Ladle; 11. Traction rope; 12. Winding drum; 13. Limiting block; 14. Support roller; 15. Limiting sleeve hole; 16. Clamping groove; 17. Guide wheel; 18. Support roller; 19. Limiting frame; 110. Lifting frame; 111. Threaded hole; 21. Threaded rod; 22. First drive motor; 23. Transmission shaft; 24. Limiting slide; 25. Limiting slide groove; 26. Second drive motor; 27. Support frame. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4As shown, the utility model is a device for lifting a RH refining furnace, comprising: a lifting component 1, an adjusting component 2 and a ladle 3, wherein the ladle 3 is clamped on the upper outer surface of the lifting component 1, and the bottom of the lifting component 1 is slidably installed inside the top of the adjusting component 2;

[0026] The lifting component 1 includes a limit frame 19, a winding drum 12 and a supporting roller 18. The supporting roller 18 is fixedly installed at both ends of the bottom surface of the limit frame 19. The winding drum 12 is rotatably clamped on the upper surface of the bottom center of the limit frame 19. A lifting frame 110 is slidably installed on the outer surface of the limit frame 19. A traction rope 11 is wound on the outer surface of the winding drum 12. Support rollers 14 are symmetrically arranged at the center of the bottom surface of the limit frame 19. A limit clamping block 13 is arranged on the bottom surface of the limit frame 19 and at the edge of the support roller 14. A clamping groove 16 is opened at the center of the side of the lifting frame 110. A limit sleeve hole 15 is opened at one end surface of the winding drum 12. A threaded hole 111 is opened at the center of the bottom side surface of the limit frame 19. A guide wheel 17 is arranged on the top outer surface of the limit frame 19.

[0027] The adjusting component 2 includes a first drive motor 22, a second drive motor 26 and a support frame 27. The second drive motor 26 and the first drive motor 22 are respectively fixedly mounted on the two end surfaces of the support frame 27. A limiting slide groove 25 is provided at the top center of the support frame 27, and limiting slideways 24 are provided on both sides of the upper surface of the support frame 27. A transmission shaft 23 is fixedly connected to the interior of the support frame 27 and located at one end of the second drive motor 26. A threaded rod 21 is fixedly connected to the other end of the support frame 27 and located at one end of the first drive motor 22.

[0028] The traction rope 11 of the utility model is slidably overlapped on the outer surface of the guide wheel 17, which can ensure the smooth sliding of the guide wheel 17. One end of the traction rope 11 is fixedly connected to the top center of the lifting frame 110, so that the traction rope 11 can control the lifting and lowering of the lifting frame 110. The winding drum 12 is slidably sleeved on the outer surface of the transmission shaft 23 through the limiting sleeve hole 15, and the winding and unwinding of the traction rope 11 by the winding drum 12 can be controlled without affecting the sliding of the winding drum 12 on the outer surface of the transmission shaft 23.

[0029] The limit frame 19 of the utility model is threadedly connected to the outer surface of the threaded rod 21 through the threaded hole 111 at the bottom, which can facilitate the control of the sliding of the limit frame 19 and adjust the distance between the limit frames 19. The limit frame 19 is slidably connected to the inner bottom end of the support frame 27 through the limit block 13 at the bottom, which can play a limiting protection role for the sliding of the bottom of the limit frame 19 and prevent the limit frame 19 from tipping over during the sliding process.

[0030] The threads on the outer surfaces of both ends of the threaded rod 21 of the utility model are symmetrically arranged, and when the threaded rod 21 rotates, the two sets of limit frames 19 can be controlled to slide synchronously in opposite directions. The limit frame 19 is slidably connected with the support frame 27 through the limit slide 24, and the traction rope 11 is slidably connected with the top center of the support frame 27 through the limit slide groove 25, which can limit the sliding of the limit frame 19 and ensure the stable sliding of the limit frame 19.

[0031] The working principle of the utility model: when the RH refining furnace is in operation, it is necessary to use a lifting device to lift the ladle 3 containing molten steel to a certain height so that the immersion tube circulation tube can be inserted into the molten steel for degassing. In this process, the lifting frame 110 is first lowered to the bottom of the limiting frame 19, and then the ladle 3 is transported to the upper surface of the supporting frame 27, and the lifting protrusion on the upper outer surface of the ladle 3 is aligned with the clamping groove 16, and then the second driving motor 26 is started to drive the transmission shaft 23 to rotate, so that the transmission shaft 23 drives the winding drum 12 to wind the traction rope 11, and the traction rope 11 will pull the lifting frame 110 to rise on the outer surface of the limiting frame 19, and at the same time, the lifting frame 110 will drive the clamping groove 16 to clamp with the protrusion on the outer surface of the ladle 3, thereby driving the ladle 3 to rise until the immersion tube is inserted into the molten steel for refining and degassing. After processing, the lifting frame 110 can be controlled to remove the ladle 3. When using the lifting device to lift ladles 3 of different sizes, the first drive motor 22 can be started to drive the threaded rod 21 to rotate, so that the two sets of limit frames 19 slide on the outer surfaces of both ends of the threaded rod 21 through the threaded holes 111, so as to adjust the spacing between the two sets of limit frames 19 to adapt to the new size of the ladle 3. When the limit frames 19 slide, they will drive the winding drum 12 to slide on the outer surface of the transmission shaft 23 through the limit sleeve hole 15. After adjusting the size between the limit frames 19, the new ladle 3 can be lifted according to the same lifting method. Therefore, through the coordinated operation between the lifting component 1 and the adjusting component 2, the RH refining furnace lifting equipment can be adapted to lift ladles of different sizes, thereby expanding the use range of the lifting equipment and meeting people's use needs.

[0032] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A device for lifting a RH refining furnace, comprising: A lifting component (1), an adjusting component (2) and a ladle (3), wherein the ladle (3) is clamped on the upper outer surface of the lifting component (1), and the bottom of the lifting component (1) is slidably mounted inside the top of the adjusting component (2); The lifting component (1) comprises a limiting frame (19), a winding drum (12) and a supporting roller (18), wherein the supporting roller (18) is fixedly mounted at both ends of the bottom surface of the limiting frame (19), the winding drum (12) is rotatably clamped on the upper surface of the bottom center of the limiting frame (19), a lifting frame (110) is slidably mounted on the outer surface of the limiting frame (19), a traction rope (11) is wound on the outer surface of the winding drum (12), and the limiting frame (19) is provided with a lifting frame (110). ) is symmetrically arranged at the center of the bottom surface of the limit frame (19), a limit clamping block (13) is arranged on the bottom surface of the limit frame (19) and at the edge of the support roller (14), a clamping groove (16) is arranged at the center of the side surface of the lifting frame (110), a limit sleeve hole (15) is arranged on one end surface of the winding drum (12), a threaded hole (111) is arranged at the center of the bottom side surface of the limit frame (19), and a guide wheel (17) is arranged on the top outer surface of the limit frame (19); The adjusting component (2) comprises a first drive motor (22), a second drive motor (26) and a support frame (27); the second drive motor (26) and the first drive motor (22) are respectively fixedly mounted on the two end surfaces of the support frame (27); a limiting slide groove (25) is provided at the top center of the support frame (27); limiting slideways (24) are provided on both sides of the upper surface of the support frame (27); a transmission shaft (23) is fixedly connected inside the support frame (27) and at one end of the second drive motor (26); and a threaded rod (21) is fixedly connected at the other end of the support frame (27) and at one end of the first drive motor (22).

2. The device for lifting a RH refining furnace according to claim 1, characterized in that: The traction rope (11) is slidably overlapped on the outer surface of the guide wheel (17), and one end of the traction rope (11) is fixedly connected to the top center of the lifting frame (110).

3. The device for lifting a RH refining furnace according to claim 2, characterized in that: The winding drum (12) is slidably sleeved on the outer surface of the transmission shaft (23) through a limiting sleeve hole (15).

4. The device for lifting a RH refining furnace according to claim 3, characterized in that: The limiting frame (19) is threadedly connected to the outer surface of the threaded rod (21) through a threaded hole (111) at the bottom.

5. The device for lifting the RH refining furnace according to claim 4, characterized in that: The limiting frame (19) is slidably engaged with the inner bottom end of the supporting frame (27) via a limiting clamping block (13) at the bottom.

6. The device for lifting a RH refining furnace according to claim 5, characterized in that: The threads on the outer surfaces of both ends of the threaded rod (21) are symmetrically arranged, and the limiting frame (19) is slidably engaged with the supporting frame (27) via a limiting slideway (24).

7. The device for lifting a RH refining furnace according to claim 6, characterized in that: The traction rope (11) is slidably connected to the top center of the support frame (27) through a limiting sliding groove (25).

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