Swing tooth supporting mechanism of LF furnace steel ladle covering and uncovering device

Abstract

The utility model relates to the field of supporting equipment, and provides a swing tooth supporting mechanism of an LF furnace steel ladle covering and uncovering device, which comprises a supporting frame and a supporting table, one side of the supporting table is fixedly connected with a stress column, when the swing tooth supporting mechanism is used, a worker starts an air cylinder, the air cylinder tightens a push rod into a telescopic column, and the telescopic column is fixedly connected with the supporting table. Wherein one push rod pulls an upper supporting column through a square plate, the upper supporting column lifts a movable arm upwards through a lower supporting column, the movable arm drives a triangular plate to lift upwards synchronously, and a cover of the furnace steel is lifted, the other push rod drives a fixed block to move rightwards through a square plate, the fixed block is connected with a sliding block, and after the sliding block is subjected to acting force of rightward movement through a rolling wheel, the sliding block moves downwards. The problems that most of the problems that the swing tooth body can automatically swing downwards are used for a long time, the swing tooth body independently drives a lifting hook to lift up a furnace cover, no other structure is used for providing unloading force, and independent operation is very strenuous are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting equipment, in particular to a swing tooth supporting mechanism of a ladle cover adding and uncovering device for an LF furnace. Background Art

[0002] The LF ladle furnace is an off-furnace refining technology that utilizes electric arc heating under vacuum conditions. Molten steel, initially refined in a conventional steelmaking furnace, is then refined in a specialized ladle. This technology was developed in 1971 by Daido Steel Co., Ltd. of Japan, based on research into refining technologies and equipment such as the ASEA-SKF refining furnace, VAD furnace, and VOD process, while also incorporating proven experience from other refining methods.

[0003] Prior art, such as Chinese patent number CN211311512U, "A swinging tooth support mechanism for an LF furnace ladle cover device," includes a swinging tooth, a guide wheel, a guide wheel bracket, a guide slide, and a swinging tooth suspension beam. The swinging tooth suspension beam is mounted on the movable beam of the LF furnace cover device, the swinging tooth is hingedly connected to the swinging tooth suspension beam, the guide wheel bracket is fixed to the fixed beam of the LF furnace cover device, and both the guide wheel and the guide slide are mounted on the guide wheel bracket. When the movable beam retracts the front half, the inclined tread at the rear end of the swinging tooth first contacts the guide wheel. As the movable beam continues to retract the rear half, the two sets of sliding guide wheels at the rear end of the swinging tooth sequentially contact the guide slide. This utility model significantly improves the stress state of the swinging tooth by increasing the lever arm of the swinging tooth in the vertical position, reducing the amount of support force on the swinging tooth in the vertical position. This resolves the bottleneck of the hydraulic locking system's inability to provide long-term locking and solves the problem of the swinging tooth automatically swinging downward, making the operation of the ladle cover device more stable and reliable.

[0004] Although the above technology solves the problem of the swinging teeth automatically swinging down, making the cover adding and uncovering equipment run smoothly, most of the problems with the swinging teeth automatically swinging down are caused by being used for too long. The swinging teeth alone drive the hook to lift the furnace cover, and there is no other structure to unload the force. It is very laborious to operate alone, and the service life is too short. The swinging teeth have a limited angle of motion. In the vertical state, the force point is large, the supporting force is small, it is easy to age, and often needs maintenance. Accidents are prone to occur during use and often require maintenance. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the swinging teeth will automatically swing down. Most of the problems are caused by years of use. The swinging teeth alone drive the hook to lift the furnace cover, and there is no other structure to unload the force. It is very laborious to operate alone, and the service life is too short. The swinging teeth have a limited angle of motion. In the vertical state, the force point is large and the supporting force is small. It is easy to age and often needs maintenance. Accidents are prone to occur during use and often require maintenance.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a swinging tooth support mechanism of an LF furnace ladle cover adding and uncovering device, comprising: a support frame and a support platform, one side of the support platform is fixedly connected to a force-bearing column, and the other side of the force-bearing column is fixedly installed with two telescopic columns through two cylinders, and the other sides of the two telescopic columns are movably connected to two push rods, and the multiple push rods are evenly divided into two groups, one group of push rods is fixedly connected to a U-shaped clamp on the other side, and the other side of the other group of push rods is fixedly connected to a square plate, and the outer surface of one side of the two square plates is fixedly installed with an upper support seat, and the two upper support seats are movably sleeved with an upper support column through a horizontal column.

[0007] The technical effect of adopting the above further solution is: the cylinder tightens the push rod into the inside of the telescopic column, one of the push rods pulls the upper support column through the square plate, and the support platform supports the push rod through the load-bearing column.

[0008] As a preferred embodiment, the outer surfaces of the two upper support columns are fixedly connected to the two U-shaped clamps through a fixed shaft, the other sides of the two upper support columns are movably sleeved with lower support columns through a rotating shaft, and the outer surfaces of one side of the two square plates are fixedly installed with fixed blocks.

[0009] The technical effect of adopting the above further solution is: by setting the upper support column and the lower support column to be connected with the rotating shaft, the tension applied to the upper support column can be transmitted to the lower support column, and the falling force applied to the lower support column by the swinging tooth body can also be applied to the upper support column.

[0010] As a preferred embodiment, one side outer surface of the two fixed blocks is movably sleeved with a movable arm through a rotating shaft, one side of the two movable arms is fixedly connected to a lower support seat, and the other side of the two lower support columns is movably sleeved on the horizontal columns of the two lower support seats.

[0011] The technical effect of adopting the above further solution is: the upper support column lifts the movable arm upward through the lower support column, and the pulling force of the U-shaped clamp can make the movable arm change the angle through the rotating shaft on the side close to the movable arm, thereby increasing the angle of the swinging tooth body.

[0012] As a preferred embodiment, two helical gears are movably sleeved on both sides of the two fixed blocks near the bottom through a fixed shaft, and two notches are provided on the inner wall of the bottom of the support frame, and helical racks are provided in both notches.

[0013] The technical effect of adopting the above further solution is that the helical gear can mesh with the helical rack. When the push rod is subjected to tension, the helical gear transmission on the helical rack can better drive the fixed block to move synchronously, thereby reducing friction.

[0014] As a preferred embodiment, the plurality of helical gears mesh with the two helical racks for movement, a slider is fixedly mounted on one side of the two fixed blocks, and two movable grooves are provided on both sides of the inner wall of the support frame.

[0015] The technical effect of adopting the above further solution is: by arranging the slider to be installed on the fixed block, the fixed block can drive the slider to move synchronously.

[0016] As a preferred embodiment, rollers are movably sleeved on the other sides of the two sliders through rotating shafts, the two rollers move inside the movable grooves, and a triangular plate is fixedly installed on the outer surface of one side of the movable arm.

[0017] The technical effect of adopting the above further solution is that when the fixed block moves, the slider can also be rotated inside the movable groove through the roller, so that the movement of the fixed block is faster and the friction is reduced.

[0018] As a preferred embodiment, the outer surfaces of one side of the two triangular plates are movably sleeved with a swinging tooth body through a rotating shaft, and the outer surfaces of the two swinging tooth bodies are movably connected to two sliding guide wheels.

[0019] The technical effect of adopting the above further solution is: the swinging gear body is connected to the triangular plate through the rotating shaft, and the triangular plate distributes the gravity exerted on the swinging gear body to various components, thereby reducing the gravity exerted on the swinging gear body alone.

[0020] As a preferred embodiment, two movable wheels are movably sleeved on the outer surfaces of both sides of the two triangular plates through a fixed shaft, the outer surfaces of multiple movable wheels are fixedly connected to telescopic rods, and the other sides of multiple telescopic rods are fixedly connected to crossbeam columns.

[0021] The technical effect of adopting the above further solution is: it is characterized in that: the telescopic rod is extended and retracted in length according to the angle of the triangle plate, and by being sleeved on the rotating shaft close to the triangle plate, the force exerted on the swinging tooth body can be transmitted to the beam column in the first time.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are:

[0023] 1. When the utility model is in use, the staff starts the cylinder, and the cylinder tightens the push rod to the inside of the telescopic column. One of the push rods pulls the upper support column through the square plate, and the upper support column lifts the movable arm upward through the lower support column. The movable arm drives the triangular plate to lift upward synchronously, and lifts the cover of the furnace steel. The other push rod drives the fixed block to move to the right through the square plate. The fixed block is connected to the slider. After the slider is subjected to the force of moving to the right through the roller, it starts to rotate inside the movable groove.

[0024] 2. In the utility model, after the two bevel gears at the bottom of the fixed block are synchronously subjected to the force, they mesh with the bevel rack at the bottom. The force exerted on the swinging tooth body is transmitted to the telescopic rod through the movable wheel, and the telescopic rod transmits the force to the crossbeam, so that the force exerted on the swinging tooth body is divided into three waves and transmitted out, which solves the problem that the swinging tooth body will automatically swing down. Most of the problems are caused by the long years of use. The swinging tooth body alone drives the hook to lift the furnace cover, and there is no other structure to unload the force. It is very laborious to operate alone, and the service life is too short. The swinging tooth has a limited movable angle. In the vertical state, the force point is large, the supporting force is small, it is easy to age, and it often needs maintenance. Accidents are prone to occur during use and it often needs maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of a swing tooth support mechanism of a LF furnace ladle cover adding and uncovering device provided by the utility model;

[0026] Figure 2 This is a top view structural diagram of a swing tooth support mechanism of a LF furnace ladle cover adding and uncovering device provided by the utility model;

[0027] Figure 3 This is a schematic cross-sectional view of a swing tooth support mechanism of a ladle cover adding and uncovering device for an LF furnace provided by the present invention;

[0028] Figure 4 The utility model provides a LF furnace ladle cover device swing tooth support mechanism Figure 1 An enlarged cross-sectional view of the middle slider.

[0029] Legend:

[0030] 1. Support frame; 2. Support platform; 3. Triangle plate; 201. Load-bearing column; 202. Telescopic column; 203. Push rod; 204. U-shaped clamp; 205. Square plate; 206. Upper support seat; 207. Upper support column; 208. Lower support column; 209. Lower support seat; 210. Movable arm; 211. Fixed block; 212. Bevel gear; 213. Bevel rack; 301. Swinging gear body; 302. Sliding guide wheel; 303. Movable wheel; 304. Telescopic rod; 305. Crossbeam; 306. Slider; 307. Roller; 308. Movable slot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-4 The utility model provides a technical solution: a swing tooth support mechanism of an LF furnace ladle cover adding and uncovering device, comprising: a support frame 1 and a support platform 2, one side of the support platform 2 is fixedly connected to a load-bearing column 201, and the other side of the load-bearing column 201 is fixedly installed with two telescopic columns 202 by two cylinders. The other sides of the two telescopic columns 202 are movably connected to two push rods 203, and multiple push rods 203 are evenly divided into two groups, one side of which is fixedly connected to a U-shaped clamp 204 of one group of push rods 203, and the other side of the other group of push rods 203 is fixedly connected to a square plate 205. An upper support seat 206 is fixedly installed on the outer surface of one side of the two square plates 205, and the two upper support seats 206 are movably sleeved with an upper support column 207 through a horizontal column. The cylinder tightens the push rod 203 to the inside of the telescopic column 202, and one of the push rods 203 pulls the upper support column 207 through the square plate 205, and the support platform 2 supports the push rod 203 through the load-bearing column 201.

[0033] like Figure 1-4 As shown, the outer surfaces of the two upper support columns 207 are fixedly connected to the two U-shaped clamps 204 through fixed shafts, and the other sides of the two upper support columns 207 are movably sleeved with lower support columns 208 through rotating shafts, and the outer surfaces of one side of the two square plates 205 are fixedly installed with fixed blocks 211. By setting the upper support columns 207 and the lower support columns 208 to be connected with the rotating shaft, the tension applied to the upper support columns 207 can be transmitted to the lower support columns 208, and the falling force applied to the lower support columns 208 by the swinging tooth body 301 can also be applied to the upper support columns 207.

[0034] like Figure 1-4 As shown, the outer surface of one side of the two fixed blocks 211 is movably provided with a movable arm 210 through a rotating shaft, one side of the two movable arms 210 is fixedly connected to the lower support seat 209, and the other sides of the two lower support columns 208 are movably provided on the horizontal columns of the two lower support seats 209. The upper support column 207 lifts the movable arm 210 upward through the lower support column 208. The pulling force of the U-shaped clamp 204 can make the movable arm 210 change the angle through the rotating shaft close to one side of the movable arm 210, so that the angle of the swinging tooth body 301 increases.

[0035] like Figure 1-4As shown, two helical gears 212 are movably sleeved on both sides of the two fixed blocks 211 near the bottom through a fixed shaft. Two notches are provided on the inner wall of the bottom of the support frame 1. A helical rack 213 is provided in each of the two notches. The helical gear 212 can engage with the helical rack 213. When the push rod 203 is subjected to tension, the helical gear 212 moves on the helical rack 213, which can better drive the fixed block 211 to move synchronously and reduce friction.

[0036] like Figure 1-4 As shown, two bevel racks 213 mesh with multiple bevel gears 212 for movement, and a slider 306 is fixedly installed on one side of the two fixed blocks 211. Two movable grooves 308 are provided on both sides of the inner wall of the support frame 1. By setting the slider 306 to be installed on the fixed block 211, the fixed block 211 can drive the slider 306 to move synchronously.

[0037] like Figure 1-4 As shown, the other sides of the two sliders 306 are movably sleeved with rollers 307 through the rotating shaft, and the two rollers 307 are movable inside the movable groove 308. The outer surface of one side of the movable arm 210 is fixedly installed with a triangular plate 3. When the fixed block 211 moves, the slider 306 can also be rotated inside the movable groove 308 through the rollers 307, making the movement of the fixed block 211 faster and reducing friction.

[0038] like Figure 1-4 As shown, the outer surface of one side of the two triangular plates 3 is movably sleeved with a swinging tooth body 301 through a rotating shaft, and the outer surfaces of the two swinging tooth bodies 301 are movably connected to two sliding guide wheels 302. The swinging tooth body 301 is connected to the triangular plate 3 through a rotating shaft. The triangular plate 3 disperses the gravity exerted on the swinging tooth body 301 to various components, thereby reducing the gravity borne by the swinging tooth body 301 alone.

[0039] like Figure 1-4 As shown, two movable wheels 303 are movably sleeved on the outer surfaces of both sides of the two triangular plates 3 through fixed shafts, and the outer surfaces of the multiple movable wheels 303 are fixedly connected with telescopic rods 304, and the other sides of the multiple telescopic rods 304 are fixedly connected with crossbeams 305. The telescopic rods 304 extend and retract in length according to the angle of the triangular plates 3. By being sleeved on the rotating shaft close to the triangular plates 3, the force acting on the swinging tooth body 301 can be transmitted to the crossbeam 305 at the first time.

[0040] Working principle: This equipment is a swinging tooth support mechanism for the LF furnace ladle cover adding and uncovering device. When in use, the staff starts the cylinder, and the cylinder tightens the push rod 203 to the inside of the telescopic column 202. One of the push rods 203 pulls the upper support column 207 through the square plate 205. The upper support column 207 lifts the movable arm 210 upward through the lower support column 208. The movable arm 210 drives the triangular plate 3 to lift upward synchronously to lift the cover of the furnace steel. The other push rod 203 drives the fixed block 211 to move to the right through the square plate 205. The fixed block 211 is connected to the slider 306. After the slider 306 is subjected to the force of moving to the right through the roller 307, it begins to rotate inside the movable slot 308. At the same time, the two bevel gears at the bottom of the fixed block 211 After 212 is synchronously subjected to the force, it meshes with the oblique rack 213 at the bottom. The force exerted on the swinging tooth body 301 is transmitted to the telescopic rod 304 through the movable wheel 303, and the telescopic rod 304 transmits the force to the crossbeam 305, so that the force exerted on the swinging tooth body 301 is divided into three waves and transmitted out, thereby solving the problem that the swinging tooth body 301 will swing down automatically. Most of the problems are caused by the long years of use. The swinging tooth body 301 alone drives the hook to lift the furnace cover, and there is no other structure to unload the force. It is very laborious to operate alone, and the service life is too short. The swinging tooth has a limited movable angle. In the vertical state, the force point is large, the supporting force is small, it is easy to age, and it often needs maintenance. Accidents are prone to occur during use and the problem of frequent maintenance is caused.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A swing tooth support mechanism for a LF furnace ladle cover device, characterized in that: include: A support frame (1) and a support platform (2), wherein one side of the support platform (2) is fixedly connected to a load-bearing column (201), and the other side of the load-bearing column (201) is fixedly installed with two telescopic columns (202) via two cylinders, and the other sides of the two telescopic columns (202) are movably connected to two push rods (203), and a plurality of the push rods (203) are evenly divided into two groups, wherein the other sides of the push rods (203) in one group are fixedly connected to a U-shaped clamp (204), and the other sides of the push rods (203) in the other group are fixedly connected to a square plate (205), and the outer surfaces of one side of the two square plates (205) are fixedly installed with an upper support seat (206), and the two upper support seats (206) are movably sleeved with an upper support column (207) via a transverse column.

2. The swing tooth support mechanism of the LF furnace ladle cover adding and uncovering device according to claim 1, characterized in that: The outer surfaces of the two upper support columns (207) are fixedly connected to the two U-shaped clamps (204) via fixed shafts, the other sides of the two upper support columns (207) are movably sleeved with lower support columns (208) via rotating shafts, and the outer surfaces of one side of the two square plates (205) are fixedly mounted with fixed blocks (211).

3. The swing tooth support mechanism of the LF furnace ladle cover adding and uncovering device according to claim 2, characterized in that: The outer surfaces of one side of the two fixed blocks (211) are movably sleeved with movable arms (210) via rotating shafts, one side of the two movable arms (210) is fixedly connected to a lower support seat (209), and the other sides of the two lower support columns (208) are movably sleeved on the transverse columns of the two lower support seats (209).

4. The swing tooth support mechanism of the LF furnace ladle cover adding and uncovering device according to claim 3, characterized in that: Two helical gears (212) are movably sleeved on both sides of the two fixed blocks (211) near the bottom via a fixed shaft. Two notches are provided on the inner wall of the bottom of the support frame (1), and helical racks (213) are provided in both notches.

5. The swing tooth support mechanism of the LF furnace ladle cover adding and uncovering device according to claim 4, characterized in that: The plurality of helical gears (212) mesh with the two helical racks (213) for movement, a slider (306) is fixedly mounted on one side of each of the two fixed blocks (211), and two movable grooves (308) are provided on both sides of the inner wall of the support frame (1).

6. The swing tooth support mechanism of the LF furnace ladle cover adding and removing device according to claim 5, characterized in that: The other side of the two sliders (306) is movably sleeved with rollers (307) via a rotating shaft. The two rollers (307) move inside the movable groove (308). A triangular plate (3) is fixedly mounted on the outer surface of one side of the movable arm (210).

7. The swing tooth support mechanism of the LF furnace ladle cover adding and removing device according to claim 6, characterized in that: One side outer surface of the two triangular plates (3) is movably sleeved with a swinging tooth body (301) via a rotating shaft, and the outer surfaces of the two swinging tooth bodies (301) are movably connected to two sliding guide wheels (302).

8. The swing tooth support mechanism of the LF furnace ladle cover adding and removing device according to claim 7, characterized in that: Two movable wheels (303) are movably sleeved on the outer surfaces of both sides of the two triangular plates (3) via fixed shafts, the outer surfaces of the plurality of movable wheels (303) are fixedly connected to telescopic rods (304), and the other sides of the plurality of telescopic rods (304) are fixedly connected to crossbeams (305).

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