Steel ladle cover for reducing temperature drop of off-line steel ladle

Abstract

The steel ladle cover comprises a steel ladle cover body, a connecting frame is installed on the upper wall of the steel ladle cover body, hoisting mechanisms are installed on the left side and the right side of the connecting frame, one end of a positioning rod is installed on the side wall of the connecting frame, and a limiting plate is installed at the other end of the positioning rod. The positioning rod comprises a threaded barrel, a screw rod and a rotating sleeve, the screw rod is rotationally installed in the threaded barrel, the rotating sleeve is connected to the outer side of the end, away from the threaded barrel, of the screw rod in a sleeving mode, a sliding groove is formed in the side wall of the limiting plate, and the rotating sleeve is installed in the sliding groove in an inserted mode. The steel ladle cover main body is positioned through the limiting plate on the positioning rod, so that the steel ladle cover main body can be smoothly inserted above an external steel ladle to seal the steel ladle, the temperature drop of the steel ladle is reduced, and meanwhile, the length of the positioning rod can be adjusted according to the distance between the edge of the steel ladle and the opening; therefore, the device can adapt to steel ladles with external reinforcing members.

Description

Technical Field

[0001] This patent relates to the field of metallurgical steelmaking continuous casting equipment, specifically a ladle cover for reducing the temperature drop of offline ladles. Background Technology

[0002] In the field of metallurgical steelmaking technology, the ladle turntable of the continuous casting machine is used to transport steel ladles and support them for casting operations. When the continuous casting machine is shut down for maintenance, the steel ladles that are not in a working state on the ladle turntable need to be placed on the ground to wait for operation. These steel ladles placed on the ground to wait for operation are referred to as offline steel ladles.

[0003] The magnitude of the offline ladle temperature drop has a significant impact on the temperature control of the continuous casting process, the converter tapping temperature, and the condition of the converter. Therefore, reducing the offline ladle temperature drop is a prerequisite for ensuring smooth production and stable product quality.

[0004] The ladle cover proposed in application number CN201820049612.3 is used to reduce the temperature drop of offline ladle. The ladle cover is moved above the offline ladle by a hoisting mechanism and placed on the ladle. The temperature drop of the offline ladle is reduced by the heat insulation medium inside the ladle cover.

[0005] However, the ladle cover proposed in the above document is only connected to the external hoisting mechanism through the lifting lugs, which makes it unstable during hoisting and movement, and prone to swaying. In addition, the support positioning plate is directly set on the outer periphery of the ladle cover, and its position cannot be adjusted. If there are reinforcing ribs on the outer periphery of the ladle, they are prone to interference with the support positioning plate, resulting in the ladle cover not being properly positioned. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this patent is to provide a ladle cover for reducing the temperature drop of offline ladles.

[0007] The technical solution adopted by this patent to solve its technical problem is: a ladle cover for reducing the temperature drop of offline ladle, including a ladle cover body, a connecting frame installed on the upper wall of the ladle cover body, and a hoisting mechanism installed on both the left and right sides of the connecting frame, the hoisting mechanism being able to be connected to an external crane;

[0008] One end of the positioning rod is installed on the side wall of the connecting frame, and the other end of the positioning rod is installed with a limiting plate. The limiting plate can fit against the side wall of the outer steel ladle.

[0009] The positioning rod includes a threaded cylinder, a screw, and a rotating sleeve. The threaded cylinder is installed on the side wall of the connecting frame. The screw is rotatably installed inside the threaded cylinder. The rotating sleeve is sleeved on the outer side of the screw away from the threaded cylinder. The side wall of the limiting plate has a sliding groove. The rotating sleeve is inserted into the sliding groove and can slide up and down in the sliding groove.

[0010] Furthermore, the inner wall of the slide groove is provided with a groove, and the outer wall of the rotating sleeve is provided with a protrusion. The protrusion is inserted into the groove and can rotate within the groove.

[0011] Furthermore, the hoisting mechanism includes a support plate, a slot, a fixed shaft, and a top ring. The support plate is installed on the upper wall of the connecting frame. The upper wall of the support plate has a slot. The inner side wall of the slot is equipped with a fixed shaft. The side walls at both ends of the fixed shaft are provided with external threads. The top ring is sleeved on the outer side of the fixed shaft. The inner wall of the top ring is provided with internal threads. The top ring is rotatably mounted on the fixed shaft through the threads.

[0012] Furthermore, the side wall of the limiting plate is provided with a spherical groove, a sphere is rotatably installed in the spherical groove, one end of a support rod is installed on the side wall of the sphere, and an arc plate is installed on the other end of the support rod. The arc plate can fit against the side wall of the outer steel ladle.

[0013] Furthermore, a fixing cylinder is installed on the upper wall of the main body of the steel ladle cover, and the fixing cylinder is sleeved on the outside of the threaded cylinder.

[0014] Furthermore, a sealing ring is fitted and installed on the lower wall of the main body of the steel ladle cover.

[0015] The beneficial effects of this patent are:

[0016] This device uses a positioning rod on one side of the ladle cover body to position the ladle cover body with a limiting plate on the positioning rod, so that it can be smoothly inserted into the top of the outer ladle to seal the ladle and reduce the temperature drop of the ladle. At the same time, the length of the positioning rod can be adjusted according to the distance between the edge of the ladle and the opening, so that it can be adapted to some ladles with external reinforcement.

[0017] In addition, the positioning rod can slide within the groove on the limiting plate to avoid interference from the limiting plate on the descent of the steel ladle cover body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this patent.

[0019] Figure 2 This is a cross-sectional schematic diagram of the hoisting mechanism of this patent.

[0020] Figure 3 This is a schematic diagram of the cross-section of the limiting plate of this patent.

[0021] Explanation of reference numerals in the attached drawings: 1 Steel ladle cover body, 2 Connecting frame, 3 Lifting mechanism, 31 Support plate, 32 Slot, 33 Fixed shaft, 34 Top ring, 4 Positioning rod, 41 Threaded cylinder, 42 Screw, 43 Rotating sleeve, 5 Limiting plate, 6 Sliding groove, 7 Groove, 8 Raised strip, 9 Spherical groove, 10 Sphere, 11 Support rod, 12 Arc plate, 13 Fixed cylinder, 14 Sealing ring. Detailed Implementation

[0022] The present patent is further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the patent. Furthermore, it should be understood that after reading the teachings of this patent, those skilled in the art can make various alterations or modifications to this patent, and these equivalent forms also fall within the scope defined by the appended claims.

[0023] See Figure 1 , Figure 2 , Figure 3 This is a schematic diagram of the structure of this patent. A ladle cover for reducing the temperature drop of an offline ladle includes a ladle cover body 1, a connecting frame 2 installed on the upper wall of the ladle cover body 1, and a hoisting mechanism 3 installed on both the left and right sides of the connecting frame 2. The hoisting mechanism 3 can be connected to an external crane.

[0024] One end of a positioning rod 4 is installed on the side wall of the connecting frame 2, and a limiting plate 5 is installed on the other end of the positioning rod 4. The limiting plate 5 can fit against the side wall of the outer steel ladle.

[0025] During the process of moving the ladle cover body 1 to the top of the ladle using an external crane, the limiting plate 5 will first fit against the side wall of the ladle to position the ladle cover body 1. After positioning, the ladle cover body 1 can be lowered to smoothly cover the top of the ladle and seal it, thereby reducing the temperature drop of the ladle.

[0026] The positioning rod 4 includes a threaded cylinder 41, a screw 42, and a rotating sleeve 43. The threaded cylinder 41 is installed on the side wall of the connecting frame 2. The screw 42 is rotatably installed inside the threaded cylinder 41. The rotating sleeve 43 is sleeved on the outer side of the end of the screw 42 away from the threaded cylinder 41. The side wall of the limiting plate 5 is provided with a sliding groove 6. The rotating sleeve 43 is inserted into the sliding groove 6 and can slide up and down in the sliding groove 6.

[0027] Because existing ladles have frames on their outer sides for easy movement or tilting, the distance between the outer wall of the ladle and the ladle opening changes. Therefore, this device sets the positioning rod 4 as a split structure, which can adjust the length of the positioning rod 4 by rotating the screw 42, so that the distance between the limiting plate 5 and the ladle cover body 1 is the same as the distance between the outer wall of the ladle and the ladle opening. Thus, the ladle cover body 1 can be smoothly inserted into the ladle to seal it.

[0028] The inner wall of the slide 6 is provided with a groove 7, and the outer wall of the rotating sleeve 43 is provided with a protrusion 8. The protrusion 8 is inserted into the groove 7 and can rotate within the groove 7.

[0029] The rotating sleeve 43 on the outside of the positioning rod 4 can slide in the groove 6 on the limiting plate 5 to avoid the limiting plate 5 interfering with the descent of the steel ladle cover body 1.

[0030] The hoisting mechanism 3 includes a support plate 31, a slot 32, a fixed shaft 33, and a top ring 34. The support plate 31 is installed on the upper wall of the connecting frame 2. The upper wall of the support plate 31 has a slot 32. The inner side wall of the slot 32 is installed with a fixed shaft 33. The side walls at both ends of the fixed shaft 33 are provided with external threads. The top ring 34 is sleeved on the outer side of the fixed shaft 33. The inner wall of the top ring 34 is provided with internal threads. The top ring 34 is installed on the fixed shaft 33 by rotating through the threads.

[0031] The hook in the external crane is hung on the fixed shaft 33. After being hung, the top ring 34 can be rotated to clamp the hook, thereby making the connection between the lifting mechanism 3 and the hook tighter and improving the stability of the device during lifting.

[0032] The side wall of the limiting plate 5 is provided with a spherical groove 9, and a ball 10 is rotatably installed in the spherical groove 9. One end of the support rod 11 is installed on the side wall of the ball 10, and an arc plate 12 is installed on the other end of the support rod 11. The arc plate 12 can fit against the side wall of the outer steel ladle.

[0033] A fixing cylinder 13 is installed on the upper wall of the steel ladle cover body 1, and the fixing cylinder 13 is sleeved on the outside of the threaded cylinder 41.

[0034] A sealing ring 14 is fitted to the lower wall of the main body 1 of the steel ladle cover.

[0035] When this patent is installed on the ladle, the hook is first hung on the fixed shaft 33. After hanging, the top ring 34 is rotated to clamp the hook, making the connection between the lifting mechanism 3 and the hook tighter and improving the stability of the device during lifting. Then, the device is moved to the ladle by an external crane. During the movement, the limiting plate 5 will first fit against the side wall of the ladle. At this time, the external crane stops moving horizontally. Then, the ladle cover body 1 is slowly lowered, and the ladle cover body 1 can be smoothly placed on top of the ladle to seal the ladle and reduce the temperature drop of the ladle.

[0036] It will be apparent to those skilled in the art that this patent 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 patent. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this patent 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 patent. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] 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 ladle cover for reducing offline ladle temperature drop, comprising a ladle cover body (1), characterized in that: A connecting frame (2) is installed on the upper wall of the main body (1) of the steel ladle cover. A hoisting mechanism (3) is installed on both the left and right sides of the connecting frame (2). The hoisting mechanism (3) can be connected to an external crane. The side wall of the connecting frame (2) is equipped with one end of a positioning rod (4), and the other end of the positioning rod (4) is equipped with a limiting plate (5). The limiting plate (5) can fit against the side wall of the outer steel ladle. The positioning rod (4) includes a threaded cylinder (41), a screw (42) and a rotating sleeve (43). The threaded cylinder (41) is installed on the side wall of the connecting frame (2). The screw (42) is rotatably installed inside the threaded cylinder (41). The rotating sleeve (43) is sleeved on the outer side of the end of the screw (42) away from the threaded cylinder (41). The side wall of the limiting plate (5) is provided with a sliding groove (6). The rotating sleeve (43) is inserted into the sliding groove (6) and can slide up and down in the sliding groove (6).

2. A ladle cover for reducing offline ladle temperature drop according to claim 1, characterized in that: The inner sidewall of the slide (6) is provided with a groove (7), and the outer sidewall of the rotating sleeve (43) is provided with a protrusion (8). The protrusion (8) is inserted into the groove (7) and can rotate within the groove (7).

3. A ladle cover for reducing offline ladle temperature drop according to claim 1, characterized in that: The hoisting mechanism (3) includes a support plate (31), a slot (32), a fixed shaft (33), and a top ring (34). The support plate (31) is installed on the upper wall of the connecting frame (2). The upper wall of the support plate (31) is provided with a slot (32). The inner side wall of the slot (32) is provided with a fixed shaft (33). The side walls at both ends of the fixed shaft (33) are provided with external threads. The top ring (34) is sleeved on the outside of the fixed shaft (33). The inner wall of the top ring (34) is provided with internal threads. The top ring (34) is installed on the fixed shaft (33) by rotating the thread.

4. A ladle cover for reducing offline ladle temperature drop according to claim 1, characterized in that: The side wall of the limiting plate (5) is provided with a spherical groove (9), and a ball (10) is rotatably installed in the spherical groove (9). One end of a support rod (11) is installed on the side wall of the ball (10), and an arc plate (12) is installed on the other end of the support rod (11). The arc plate (12) can fit against the side wall of the outer steel ladle.

5. A ladle cover for reducing offline ladle temperature drop according to claim 1, characterized in that: A fixing cylinder (13) is installed on the upper wall of the steel ladle cover body (1), and the fixing cylinder (13) is sleeved on the outside of the threaded cylinder (41).

6. A ladle cover for reducing offline ladle temperature drop according to claim 1, characterized in that: A sealing ring (14) is fitted to the lower wall of the steel ladle cover body (1).

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