Anti-falling lifting device for steel ladle cover
By designing an anti-fall-off lifting device and utilizing the cooperation of snap-fit components and snap-fit connectors, the problem of the ladle cover falling off during transportation was solved, thus achieving stability and safety in the lifting process.
Patent Information
- Application Number
- CN202520500364.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-20
AI Technical Summary
In existing technologies, the ladle cover is prone to detaching from the hook during transport, which poses a stability problem.
An anti-fall-off lifting device was designed, including a figure-eight shaped fixing block, a hook, a first snap-fit assembly, and a second snap-fit assembly. Through the cooperation of the snap-fit components and the snap-fit connector, the hook and the lifting rod are stably connected to ensure that the hook does not fall off.
It effectively prevents the ladle cover from falling off during transportation, improves hoisting stability, and ensures the safety of the ladle cover.
Smart Images
Figure CN223892260U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metallurgical equipment technology, and in particular to an anti-falling lifting device for a steel ladle cover. Background Technology
[0002] In the production of continuously cast steel, molten steel is generally supplied to the tundish through a ladle. During this process, the ladle is covered to slow down the cooling of the molten steel.
[0003] Currently, most manufacturers use steel ropes and hooks to lift molten steel ladle covers. While this method effectively transfers the covers, the steel ropes sway during transport, making it difficult to maintain stability. This can cause the ladle cover to slip relative to the hook, increasing the risk of it falling off. To address this, we propose an anti-fall-off lifting device for molten steel ladle covers. Summary of the Invention
[0004] The problem this invention aims to solve is the risk of the ladle cover and hook body falling off in the prior art.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a lifting device for preventing the detachment of a ladle cover, comprising two fixing blocks arranged in a figure-eight shape at the middle of the top of the ladle cover, a hook, a first locking assembly disposed at the top of the ladle cover, and a second locking assembly connected to one side of the hook. A through hole is opened at one end of the two fixing blocks that are close to each other, and a lifting rod is disposed in the through hole. The first locking assembly includes a fixing rod disposed between the two fixing blocks. A hemispherical first locking connector is disposed at the top of the fixing rod. A first locking member is slidably sleeved on the outer wall of the fixing rod. The second locking assembly includes a plug-in cylinder. The top of the plug-in cylinder is connected to the hook through a chain. Second locking members are respectively disposed on both sides of the bottom end of the plug-in cylinder.
[0006] As a preferred embodiment of the anti-falling lifting device for a ladle cover according to the present invention, the second snap-fit component includes a snap-fit box communicating with the inside of the insertion tube. A snap-fit block with an inclined end is slidably disposed inside the snap-fit box, and a spring is connected between the other end of the snap-fit block and the inner wall of the snap-fit box.
[0007] As a preferred embodiment of the anti-falling lifting device for a ladle cover according to the present invention, the first locking member includes a second locking connector with a hemispherical lower part and a third locking connector with a hemispherical upper part. The diameter of the second locking connector is equal to the diameter of the first locking connector, and the diameter of the third locking connector is smaller than the diameter of the second locking connector.
[0008] As a preferred embodiment of the anti-falling lifting device for a ladle cover described in this utility model, wherein: a slope is formed between the third clamping joint and the second clamping joint, and a cavity adapted to the third clamping joint and the slope is provided at the bottom end of the first clamping joint.
[0009] As a preferred embodiment of the anti-falling lifting device for a ladle cover according to the present invention, wherein: a frustum-shaped guide plate is provided at the bottom end of the insertion tube, a support column is provided at the bottom end of the fixing rod, the first snap-fit member is located above the support column, and the vertical height of the frustum-shaped guide plate is less than the height of the support column.
[0010] As a preferred embodiment of the anti-falling lifting device for a ladle cover described in this utility model, baffles are respectively provided at both ends of the lifting rod.
[0011] The beneficial effects of this utility model are as follows: In this utility model, the top of the hook is connected to an external lifting device via a steel rope. The external lifting device controls the plug-in sleeve connected to the hook to cover the fixed rod, and then controls the hook to hook the lifting rod. If the fixed rod and the lifting rod are separated, the second locking piece on the plug-in sleeve will lock the first locking piece at the top of the fixed rod, preventing the cover from falling directly after the hook and the lifting rod are separated. When the cover moves to the set position, the hook will fall completely. When the plug-in sleeve is completely covered by the fixed rod, the plug-in sleeve will be lifted up, and the second locking piece will completely detach from the fixed rod. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0013] Figure 1 This is a schematic diagram of a lifting device for preventing the molten steel ladle cover from falling off.
[0014] Figure 2 This is a schematic diagram of the structure of a first and second locking components cooperating in a lifting device for preventing the molten steel ladle cover from falling off.
[0015] Figure 3 This is a bottom view schematic diagram of the engagement of the first and second locking components in a lifting device for preventing the molten steel ladle cover from falling off. Detailed Implementation
[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0017] Reference Figures 1-3This embodiment is a lifting device for preventing the ladle cover from falling off. It includes two fixing blocks 200 arranged in a figure-eight shape at the middle of the top of the ladle cover 100, a hook 300, a first locking assembly 400 arranged at the top of the ladle cover 100, and a second locking assembly 500 connected to one side of the hook 300. The two fixing blocks 200 have a through hole at their close ends, and a lifting rod 201 is arranged in the through hole. The first locking assembly 400 includes a fixing rod 401 arranged between the two fixing blocks 200. The top of the fixing rod 401 is provided with a hemispherical first locking connector 402. The outer wall of the fixing rod 401 is slidably sleeved with a first locking member 403. The second locking assembly 500 includes a plug tube 501. The top of the plug tube 501 is connected to the hook 300 through a chain 502. The bottom two sides of the plug tube 501 are respectively provided with second locking members 503.
[0018] The top of the hook 300 is connected to external lifting equipment via a cable. By controlling the external lifting equipment, the plug-in sleeve 501 connected to the hook 300 is controlled to first move downwards to fit around the fixed rod 401, so that the plug-in sleeve 501 is not completely fitted around the fixed rod 401. Then, the hook 300 is controlled to hook the lifting rod 201. The lifting rod 201 is located at the end where the two fixed blocks 200 are close together, so that the hook 300 will not move significantly after hooking the lifting rod 201. If the hook 300 accidentally falls off the lifting rod 201, the second locking piece at the bottom of the plug-in sleeve 501 will engage. 503 engages the first locking connector 402 at the top of the fixing rod 401. When the cover 100 moves to the set position, the external lifting equipment is controlled to control the insertion tube 501 connected to the hook 300 to first move downward so that it completely covers the fixing rod 401. When the insertion tube 501 moves downward, the second locking member 503 slides over the first locking member 403. Then the insertion tube 501 is pulled upward so that the second locking member 503 on the insertion tube 501 slides over the first locking member 403 and the first locking connector 402 in sequence until the insertion tube 501 is disengaged from the fixing rod 401.
[0019] In this embodiment, the second snap-fit component 503 includes a snap-fit box 503a that communicates with the inside of the plug-in cylinder 501. A snap-fit block 503b with one end being inclined is slidably disposed inside the snap-fit box 503a. A spring 503c is connected between the other end of the snap-fit block 503b and the inner wall of the snap-fit box 503a.
[0020] When the plug-in sleeve 501 moves downward to fit the fixing rod 401, the locking block 503b is continuously squeezed by the first locking connector 402 under the gravity of the plug-in sleeve 501. Since the first locking connector 402 is hemispherical, the inclined surface of the locking block 503b is squeezed and pushed into the locking box 503a. After the locking block 503b continues to move downward and disengages from the first locking connector 402, the locking block 503b returns to its original position under the action of the spring 503c.
[0021] In this embodiment, the first snap-fit component 403 includes a second snap-fit connector 403a with a hemispherical lower part and a third snap-fit connector 403b with a hemispherical upper part. The diameter of the second snap-fit connector 403a is equal to the diameter of the first snap-fit connector 402, and the diameter of the third snap-fit connector 403b is smaller than the diameter of the second snap-fit connector 403a.
[0022] As the first locking connector 402 continues to move downward, the inclined surface of the first locking connector 402 successively passes over the third locking connector 403b and the second locking connector 403a.
[0023] In this embodiment, a ramp 403c is formed between the third snap connector 403b and the second snap connector 403a, and a cavity 402a adapted to the third snap connector 403b and the ramp 403c is provided at the bottom of the first snap connector 402.
[0024] As the first locking connector 402 continues to move downward, the inclined surface of the first locking connector 402 successively passes over the third locking connector 403b, the ramp 403c, and the second locking connector 403a. Then, if the first locking connector 402 moves upward, the first locking connector 402 drives the entire first locking member 403 to move upward until the third locking connector 403b and the ramp 403c in the first locking member 403 enter the cavity 402a at the bottom of the first locking connector 402. At this time, the first locking connector 402 successively passes over the surface of the second locking connector 403a and the surface of the first locking connector 402.
[0025] In this embodiment, a frustum-shaped guide plate 504 is provided at the bottom end of the plug-in tube 501, a support column 404 is provided at the bottom end of the fixing rod 401, the first snap-fit member 403 is located above the support column 404, and the vertical height of the frustum-shaped guide plate 504 is less than the height of the support column 404.
[0026] The frustum-shaped guide plate 504 facilitates the alignment of the plug-in cylinder 501 with the fixing rod 401 during downward displacement. When the plug-in cylinder 501 falls completely, since the vertical height of the frustum-shaped guide plate 504 is less than the height of the support column 404, it will not prevent the first snap-fit connector 402 from sliding to the bottom of the first snap-fit member 403.
[0027] In this embodiment, baffles 202 are provided at both ends of the lifting rod 201.
[0028] Working principle: The top of the hook 300 is connected to external lifting equipment via a cable. By controlling the external lifting equipment, the plug-in cylinder 501 connected to the hook 300 is controlled to move downwards to fit onto the fixed rod 401. The frustum-shaped guide plate 504 facilitates the alignment of the plug-in cylinder 501 with the fixed rod 401 during downward movement. The height of the hook 300 is controlled so that the second locking piece 503 at the bottom of the plug-in cylinder 501 is positioned between the first locking piece 402 and the first locking piece 403. During this process, the locking block 503b at the bottom of the plug-in cylinder 501 is subjected to the gravity of the plug-in cylinder 501. The first locking connector 402 continuously compresses the second locking member 503b. Because the first locking connector 402 is hemispherical, the inclined surface of the locking block 503b is compressed, forcing it into the locking box 503a. This continues until the locking block 503b disengages from the first locking connector 402. Then, under the action of the spring 503c, the locking block 503b returns to its original position. Next, while maintaining the second locking member 503 between the first locking connector 402 and the first locking member 403, the hook 300 is controlled to hook the lifting rod 201. The lifting rod 201 is located between the two fixed blocks 2. The near-closed ends of the hook 300 prevent significant displacement after it hooks the lifting rod 201. If the hook 300 accidentally detaches from the lifting rod 201, the second locking member 503 at the bottom of the connector 501 locks the first locking connector 402 at the top of the fixing rod 401. When the cover 100 moves to the set position, the connector 501 connected to the hook 300 is completely lowered by controlling the external lifting equipment. As the first locking connector 402 continues to move downwards, its inclined surface successively passes over the third locking connector 403b and the ramp 403c. Then, by controlling the hook 300 to move upward, the insertion cylinder 501 is moved upward, which in turn drives the first clamping connector 402 to move upward. The first clamping connector 402 drives the entire first clamping component 403 to move upward until the third clamping connector 403b and the ramp 403c in the first clamping component 403 enter the cavity 402a at the bottom of the first clamping connector 402. At this time, the first clamping connector 402 passes through the surface of the second clamping connector 403a and the first clamping connector 402 in sequence, and the insertion cylinder 501 is completely separated from the fixing rod 401, completing one operation.
[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A lifting device for preventing the molten steel ladle cover from falling off, characterized in that: The device includes two fixing blocks (200) arranged in a V-shape at the center of the top of the cover (100), a hook (300), a first snap-fit assembly (400) located at the top of the cover (100), and a second snap-fit assembly (500) connected to one side of the hook (300). A through hole is provided at one end of the two fixing blocks (200) that is close to each other, and a lifting rod (201) is provided within the through hole. The first snap-fit assembly (400) includes components located at the center of the top of the two fixing blocks (200). The fixed rod (401) between 00) has a hemispherical first snap-fit connector (402) at the top end of the fixed rod (401), and a first snap-fit piece (403) is slidably sleeved on the outer wall of the fixed rod (401). The second snap-fit assembly (500) includes a plug tube (501), the top end of the plug tube (501) is connected to the hook (300) through a chain (502), and the bottom ends of the plug tube (501) are respectively provided with second snap-fit pieces (503) on both sides.
2. The anti-falling lifting device for a steel ladle cover as described in claim 1, characterized in that: The second snap-fit component (503) includes a snap-fit box (503a) that communicates with the inside of the plug tube (501). A snap-fit block (503b) with an inclined end is slidably disposed inside the snap-fit box (503a). A spring (503c) is connected between the other end of the snap-fit block (503b) and the inner wall of the snap-fit box (503a).
3. The anti-falling lifting device for a steel ladle cover as described in claim 1, characterized in that: The first snap-fit component (403) includes a second snap-fit connector (403a) with a hemispherical lower part and a third snap-fit connector (403b) with a hemispherical upper part. The diameter of the second snap-fit connector (403a) is equal to the diameter of the first snap-fit connector (402), and the diameter of the third snap-fit connector (403b) is smaller than the diameter of the second snap-fit connector (403a).
4. The anti-falling lifting device for a ladle cover as described in claim 3, characterized in that: A ramp (403c) is formed between the third snap-fit connector (403b) and the second snap-fit connector (403a), and a cavity (402a) is provided at the bottom of the first snap-fit connector (402) to match the third snap-fit connector (403b) and the ramp (403c).
5. A lifting device for preventing the detachment of a ladle cover as described in claim 1, characterized in that: The bottom end of the plug tube (501) is provided with a frustum-shaped guide plate (504), and the bottom end of the fixing rod (401) is provided with a support column (404). The first snap-fit member (403) is located above the support column (404). The vertical height of the frustum-shaped guide plate (504) is less than the height of the support column (404).
6. The anti-falling lifting device for a ladle cover as described in claim 1, characterized in that: The lifting rod (201) is provided with baffles (202) at both ends.