Self-horizontal eccentric plate hook lifting appliance for molten iron folding tank

Abstract

The invention discloses a self-horizontal eccentric plate hook lifting appliance for molten iron tank folding, and belongs to the technical field of metallurgical equipment, the self-horizontal eccentric plate hook lifting appliance comprises two connecting plates capable of being connected with a travelling crane auxiliary hook, and the lower part between the two connecting plates is connected with an eccentric plate hook body through a plate hook shaft; the whole eccentric plate hook body is of an arc-shaped structure, the eccentric plate hook body comprises a plate hook through hole located in the upper portion of the eccentric plate hook body and a balance weight part, a plate hook shaft connected with the lower portions of the two connecting plates is arranged in the plate hook through hole, and the balance weight part is arranged on one side of the plate hook through hole; the eccentric plate hook body further comprises a hooking part located on the lower portion of the eccentric plate hook body, and the hooking part extends towards the side away from the balance weight part. And a hanging groove is formed in the top surface of one end part, deviating from the counterweight part, of the hooking part. The eccentric plate hook body adopts the arc-shaped structure and is combined with the design of the counter weight part, the self-leveling function is realized by utilizing the gravity principle, the accuracy of butt joint with a tank tilting hanger shaft can be improved in the hoisting process, the manual intervention is greatly reduced, and the risk of misoperation is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical equipment, and particularly relates to a self-leveling eccentric plate hook hoist for molten iron ladle tipping. Background Art

[0002] In the production processes of metal smelting such as ironmaking and steelmaking, it is inevitable to carry out ladle tipping operations on molten metal at temperatures above 1000 °C. On-site ladle tipping operations usually use the main hook and auxiliary hook of the metallurgical crane trolley to cooperate. The main hook is mounted on two symmetric lifting trunnions of the molten metal ladle with the help of a double-hook gantry hoist. The trunnions are located in the upper-middle position of the molten metal ladle body, and the remote control can be used to operate remotely from a safe position. In order to enable large-angle tipping of the high-temperature molten metal ladle for ladle tipping, the auxiliary hook needs to be mounted on the tipping lifting shaft arranged at the lower position of the molten metal ladle body. Limited by the body structure of the molten metal ladle, the tipping lifting shaft located below is blocked by the protruding part of the upper part of the molten metal ladle. The unhooking and hooking operations of the auxiliary hook require separate personnel to manually assist and cooperate on-site. The molten metal and the metal ladle containing it have a very high temperature. In addition to being prone to scalding, the high-temperature molten metal is also prone to splashing and explosion accidents. Standing under the high-temperature molten metal ladle, close to the molten metal at temperatures above 1000 °C, the unhooking and hooking operations of the auxiliary hook pose significant safety risks and belong to high-risk operations. In addition, compared with the relatively complicated metal smelting production process, the ladle tipping operation of molten metal has a relatively single work attribute, but the operation requires multiple people to cooperate, with low manual efficiency and being not conducive to cost reduction and efficiency improvement.

[0003] However, the currently partially used L-shaped long bent connecting rod eccentric hoist has the following problems in use: First, in the long bent connecting rod structure, it is very difficult to maintain stable direction positioning during the unhooking and hooking process, with poor operation accuracy and requiring repeated adjustment; second, the weight of the molten iron and the iron ladle is very large, and the long bent connecting rod is prone to deformation and failure after bearing the load. Summary of the Invention

[0004] To solve the problems of poor structural stability of the eccentric hoist and low hooking accuracy requiring manual assistance, the invention provides a self-leveling eccentric plate hook hoist for molten iron ladle tipping.

[0005] The invention is realized by the following technical solutions: A self-leveling eccentric plate hook sling for a molten iron folding tank, comprising a connecting plate that can be connected to a crane auxiliary hook, wherein two connecting plates are provided, and an eccentric plate hook body is connected to the lower portion between the two connecting plates through a plate hook shaft; the eccentric plate hook body is an overall arc-shaped structure, and the eccentric plate hook body comprises a plate hook through hole and a counterweight portion located at its upper portion, a plate hook through hole is provided in the plate hook through hole to connect the lower portions of the two connecting plates, and the counterweight portion is arranged on one side of the plate hook through hole; the eccentric plate hook body also comprises a hook portion located at its lower portion, and the hook portion extends to a side away from the counterweight portion; a hanging groove is provided on the top surface of one end of the hook portion away from the counterweight portion.

[0006] The eccentric plate hook body adopts an arc structure and is combined with a counterweight design. It uses the principle of gravity to achieve a self-leveling function. During the lifting process, the hook can maintain a horizontal posture, which can improve the accuracy of docking with the tilting tank lifting shaft, greatly reduce manual intervention, and reduce the risk of operational errors; The overall arc-shaped eccentric plate hook body is rolled. Compared with the stamped plate hook, it eliminates the internal defects, improves the structural strength and stability, can withstand the huge weight of molten iron and molten iron tanks, and reduces the risk of deformation and failure; and the arc design makes the force more uniform; The hook groove design forms a precise match with the tilting tank lifting shaft, increasing the contact area and ensuring a firm and stable hook. At the same time, this structural design makes the process of removing the auxiliary hook smoother, reduces jamming and avoids safety accidents caused by unstable hooking.

[0007] A further improvement of the present invention is that a positioning block is sleeved on the plate hook shaft, the positioning block is located between the eccentric plate hook body and the connecting plate, and the positioning block is respectively in contact with the eccentric plate hook body and the connecting plate; the connecting plate is provided with a bolt assembly a for fixing the positioning block. The positioning block is fixed by the bolt assembly a, which can limit the axial movement of the eccentric plate hook body on the plate hook shaft, ensure the alignment accuracy of the hook hanging part and the tilting tank hanging shaft, and avoid the difficulty of hanging and removing due to shaking; the design of the bolt assembly a facilitates the on-site disassembly of the positioning block, and can quickly replace the worn parts or adjust the assembly gap, reduce the downtime for maintenance, and meet the high-frequency operation requirements of metallurgical production.

[0008] A further improvement of the present invention is that a contact boss is provided on one side of the positioning block close to the eccentric plate hook body. The contact surface of the contact boss and the eccentric plate hook body forms a mechanical stop, which cooperates with the positioning block to further lock the axial position of the plate hook, prevents displacement caused by vibration or heavy load, and improves stability during operation.

[0009] A further improvement of the present invention is that there are four first positioning card slots provided on the above-mentioned plate hook shaft. Two of the four first positioning card slots are in a group and are respectively arranged at both ends of the plate hook shaft. The two first positioning card slots located at the same end on the plate hook shaft are arranged axially symmetrically; a first positioning card plate capable of cooperating with the first positioning card slot is connected to the outside of the connecting plate through a bolt assembly a. The axially symmetric first positioning card slots at both ends of the plate hook shaft cooperate with the first positioning card plate to form a two-way constraint, ensuring the vertical assembly accuracy of the connecting plate and the eccentric plate hook body, avoiding the skewing problem caused by asymmetric stress of the long bent connecting rod structure, and improving the overall rigidity of the lifting appliance.

[0010] A further improvement of the present invention is that an adjusting cushion plate a is provided on the outside of the above-mentioned connecting plate and is fixed by a bolt assembly a. The adjusting cushion plate a is sleeved on the plate hook shaft, and the adjusting cushion plate a is located between the first positioning card plate and the connecting plate. The adjusting cushion plate a is sleeved between the first positioning card plate and the connecting plate, and the assembly gap can be eliminated by increasing or decreasing the thickness of the cushion plate, ensuring uniform force on the plate hook shaft, avoiding local stress concentration caused by the gap, and prolonging the service life of the lifting appliance. Considering that metal components are prone to thermal expansion and contraction at high temperatures in the metallurgical environment, the adjusting cushion plate can dynamically compensate for dimensional changes, maintain the connection reliability of the lifting appliance, and reduce operation abnormalities caused by thermal deformation.

[0011] A further improvement of the present invention is that a hook shaft capable of being hooked to the auxiliary hook of the crane is commonly connected to the upper parts of the above-mentioned two connecting plates. Shoulder portions are respectively provided at both ends of the hook shaft, and the shoulder portions abut against the connecting plates and keep the connecting plates in a vertical state. The shoulder portions abut against the connecting plates to forcibly keep the connecting plates in a vertical state, avoiding the difficulty of hooking caused by the deviation of the hanging angle of the traditional L-shaped lifting appliance, ensuring that the auxiliary hook is vertically aligned with the tilting ladle lifting shaft when unhooking and hooking, and reducing manual intervention; at the same time, the structural design of keeping the connecting plates vertical helps to improve the anti-deformation ability during operation, prolong the service life, and enhance the structural strength.

[0012] A further improvement of the present invention is that there are four second positioning card slots provided on the above-mentioned hook shaft. Two of the four second positioning card slots are in a group and are respectively arranged at both ends of the hook shaft and are outside the shoulder portions. The two second positioning card slots located at the same end on the hook shaft are arranged axially symmetrically; a second positioning card plate capable of cooperating with the second positioning card slot is connected to the connecting plate through a bolt assembly b. The cooperation between the second positioning card slot and the second positioning card plate prevents the axial movement of the hook shaft in the connecting plate hole, ensures the stability of the connection between the lifting appliance and the auxiliary hook of the crane, and avoids the risk of tilting ladle out of control caused by connection loosening.

[0013] A further improvement of the present invention is that two adjustment pads fixed by bolt assemblies b are respectively provided on both sides of the above-mentioned connecting plate, one of which is set on the hook shaft between the positioning card plate 2 and the connecting plate, and the other is set on the hook shaft between the connecting plate and the shaft shoulder. The two adjustment pads on both sides respectively compensate for the assembly gap between the positioning card plate 2 and the shaft shoulder to ensure that the hook shaft is subjected to balanced force, avoid the increase in the rotation resistance of the eccentric plate hook body caused by the deflection of the connecting plate, and improve the smoothness of the operation of the sling. The pad can be made of wear-resistant alloy or high temperature resistant material. After wear, there is no need to replace the hook shaft as a whole. Only the pad needs to be replaced to restore the accuracy, reducing maintenance costs.

[0014] A further improvement of the present invention is that the hooking part is provided with an anti-slip protrusion, which is located on the side of the hooking groove away from the counterweight part. The anti-slip protrusion can prevent the tilting tank suspension shaft from sliding out of the hooking groove during the tilting process, and even under the condition of high-temperature molten metal shaking or sling vibration, the hooking state can be ensured to be reliable, and major safety accidents such as molten metal splashing and explosion caused by unhooking can be prevented.

[0015] A further improvement of the present invention is that a wear-resistant lining is provided in the above-mentioned hanging groove. The wear-resistant lining is made of high-hardness alloy material, which can withstand the friction loss caused by frequent unhooking and unhooking of the tilting tank lifting shaft. Compared with the direct contact of the traditional plate hook surface, it can reduce the frequency of shutdown and replacement, and reduce the overall cost. Among them, the wear-resistant lining can be made of high-strength steel plates of grade Q690 and above, and its wear resistance is improved through quenching and tempering treatment. When the wear-resistant lining is worn to a remaining safety thickness of 3mm, a new wear-resistant lining can be replaced. The lining is fixed by bolts or welding, and can be replaced separately after wear, without the need to scrap the sling as a whole, which meets the needs of reducing costs and increasing efficiency in the metallurgical industry.

[0016] It can be seen from the above technical scheme that the beneficial effects of the present invention are: through the design of self-leveling positioning, anti-slip structure, rigid connection, etc., the need for close manual operation is eliminated, the risks of scalding, splashing, etc. are reduced, and unmanned or remote operation of high-risk operations is realized.

[0017] Features such as fast alignment and precise positioning shorten the time of a single process, reduce the number of people involved in the process, and improve the continuity of the metal smelting production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of a sling according to a specific embodiment of the present invention.

[0020] Figure 2 is Figure 1 a schematic side structure diagram of

[0021] Figure 3 a schematic structure diagram of the eccentric plate hook body in the specific embodiment of the present invention.

[0022] Figure 4 is Figure 3 a schematic cross-sectional view taken along line A-A in

[0023] Figure 5 a schematic structure diagram of the plate hook shaft in the specific embodiment of the present invention.

[0024] Figure 6 a schematic structure diagram of the hook shaft in the specific embodiment of the present invention.

[0025] Figure 7 a schematic structure diagram of the usage state in the specific embodiment of the present invention.

[0026] In the drawings: 10, connecting plate; 1011, plate hook shaft; 10111, first positioning card slot; 1012, first positioning card plate; 1013, bolt assembly a; 1014, positioning block; 10141, abutting convex platform; 1015, first adjusting cushion plate; 1021, hook shaft; 10211, shaft shoulder; 10212, second positioning card slot; 1022, second positioning card plate; 1023, bolt assembly b; 1024, second adjusting cushion plate; 20, eccentric plate hook body; 21, counterweight part; 22, hooking part; 23, hanging groove; 24, anti-detachment protrusion part; 25, plate hook through hole; 26, riveting hole; 30, wear-resistant lining plate; 40, anchor nail; 50, traveling sub-hook. Specific Embodiment

[0027] In order to make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0028] Such as Figures 1 to 7As shown, the present invention discloses a self-leveling eccentric plate hook hanger for molten iron folding tanks, including a connecting plate 10 that can be connected to a crane auxiliary hook 50, wherein two connecting plates 10 are provided, and the lower part between the two connecting plates 10 is connected to an eccentric plate hook body 20 through a plate hook shaft 1011; the eccentric plate hook body 20 is an arc-shaped structure as a whole, and the eccentric plate hook body 20 includes a plate hook through hole 25 and a counterweight part 21 located at its upper part, and a plate hook shaft 1011 connecting the lower parts of the two connecting plates 10 is provided in the plate hook through hole 25, and the counterweight part 21 is arranged on one side of the plate hook through hole 25; the eccentric plate hook body 20 also includes a hook part 22 located at its lower part, and the hook part 22 extends to a side away from the counterweight part 21; a hanging groove 23 is provided on the top surface of one end of the hook part 22 away from the counterweight part 21.

[0029] The eccentric plate hook body 20 adopts an arc structure and is designed in combination with a counterweight part 21, and uses the principle of gravity to achieve a self-leveling function. During the lifting process, the hook part 22 can maintain a horizontal posture, which can improve the accuracy of docking with the tilting tank lifting shaft, greatly reduce manual intervention, and reduce the risk of operational errors; The overall arc-shaped eccentric plate hook body 20 is rolled, which eliminates the internal defect problem compared to the stamped plate hook, improves the structural strength and stability, can withstand the huge weight of molten iron and molten iron tank, and reduces the risk of deformation and failure; and the arc-shaped design makes the force more uniform; The hook groove 23 of the hook part 22 is designed to form a precise match with the tilting tank lifting shaft, increasing the contact area and ensuring a firm and stable hook. At the same time, this structural design makes the process of removing the hook from the auxiliary hook smoother, reduces jamming and avoids safety accidents caused by unstable hooking.

[0030] The eccentric plate hook body 20 is provided with a plurality of eccentric plate hook bodies 20, which are stacked and assembled and connected as a whole through anchor nails 40. The eccentric plate hook body 20 is rolled from a low alloy steel plate with a thickness of 20-30 mm, and the eccentric plate hook body 20 is evenly distributed with riveting holes 26. The anchor nails 40 sequentially pass through the riveting holes 26 of the plurality of eccentric plate hook bodies 20 to make the plurality of eccentric plate hook bodies 20 fit closely, thereby improving the load-bearing capacity.

[0031] The hooking part 22 is provided with an anti-slip protrusion 24, which is located on the side of the hooking groove 23 away from the counterweight part 21. The anti-slip protrusion 24 can prevent the tilting tank suspension shaft from sliding out of the hooking groove 23 during the tilting process, and can ensure the reliable hooking state even under the condition of high-temperature molten metal shaking or hoist vibration, and prevent major safety accidents such as molten metal splashing and explosion caused by unhooking.

[0032] A wear-resistant lining plate 30 is provided in the hanging groove 23, and the wear-resistant lining plate 30 covers the inner surface of the hanging groove 23 jointly formed by a plurality of stacked eccentric plate hook bodies 20. The wear-resistant lining plate 30 is made of high-hardness alloy material, which can withstand the friction loss caused by the frequent engagement and disengagement of the tilting ladle hanging shaft. Compared with the direct contact on the surface of the traditional plate hook, it can reduce the shutdown replacement frequency and lower the comprehensive cost. Among them, the wear-resistant lining plate 30 can be made of high-strength steel plate of Q690 and above, and its wear-resistant performance is improved through quenching and tempering treatment. When the remaining safety thickness of the wear-resistant lining plate 30 is 3 mm after wear, a new wear-resistant lining plate 30 can be replaced. The lining plate is fixed by bolts or welding, and can be replaced separately after wear, without scrapping the lifting tool as a whole, meeting the requirements of cost reduction and efficiency increase in the metallurgical industry.

[0033] A positioning block 1014 is sleeved on the plate hook shaft 1011. The positioning block 1014 is located between the eccentric plate hook body 20 and the connecting plate 10, and the positioning block 1014 is respectively in contact with the eccentric plate hook body (20) and the connecting plate 10; a bolt assembly a1013 for fixing the positioning block 1014 is provided on the connecting plate 10. The positioning block 1014 is fixed by the bolt assembly a1013, which can limit the axial movement of the eccentric plate hook body 20 on the plate hook shaft 1011, ensure the alignment accuracy of the hook hanging part 22 and the tilting ladle hanging shaft, and avoid the difficulty of engagement and disengagement caused by shaking; the design of the bolt assembly a1013 facilitates the on-site disassembly of the positioning block 1014, can quickly replace worn parts or adjust the assembly clearance, reduce the shutdown maintenance time, and meet the requirements of high-frequency operation in metallurgical production.

[0034] A contact boss 10141 is provided on one side of the positioning block 1014 close to the eccentric plate hook body 20. The contact surface between the contact boss 10141 and the eccentric plate hook body 20 forms a mechanical stop, which cooperates with the positioning block 1014 to further lock the axial position of the plate hook shaft 1011, prevent offset caused by vibration or heavy load, and improve the stability during operation.

[0035] Four first positioning slots 10111 are provided on the plate hook shaft 1011. Two of the four first positioning slots 10111 are in a group and are respectively arranged at both ends of the plate hook shaft 1011. The two first positioning slots 10111 at the same end of the plate hook shaft 1011 are axially symmetrically arranged; a first positioning card plate 1012 that can cooperate with the first positioning slots 10111 is connected to the outside of the connecting plate 10 through a bolt assembly a1013. The axially symmetric first positioning slots 10111 at both ends of the plate hook shaft 1011 cooperate with the first positioning card plate 1012 to form a two-way constraint, ensure the vertical assembly accuracy of the connecting plate 10 and the eccentric plate hook body 20, avoid the skewing problem caused by asymmetric force on the long bent connecting rod structure, and improve the overall rigidity of the lifting tool.

[0036] On the outer side of the connecting plate 10, there is an adjusting cushion plate 1015 fixed by a bolt assembly a1013. The adjusting cushion plate 1015 is sleeved on the plate hook shaft 1011, and the adjusting cushion plate 1015 is located between the positioning card plate 1012 and the connecting plate 10. The adjusting cushion plate 1015 is sleeved between the positioning card plate 1012 and the connecting plate 10, and the assembly clearance can be eliminated by increasing or decreasing the thickness of the cushion plate, ensuring uniform force on the plate hook shaft 1011, avoiding local stress concentration caused by the clearance, and prolonging the service life of the sling. Considering that in the high-temperature metallurgical environment, metal components are prone to thermal expansion and contraction, the adjusting cushion plate can dynamically compensate for the dimensional changes, maintain the connection reliability of the sling, and reduce the operation abnormalities caused by thermal deformation.

[0037] The upper parts of the two connecting plates 10 are jointly connected with a hook shaft 1021 that can be hooked to the auxiliary hook 50 of the crane. Both ends of the hook shaft 1021 are respectively provided with shoulders 10211, and the shoulders 10211 are abutted against the connecting plates 10 and keep the connecting plates 10 in a vertical state. The shoulders 10211 are abutted against the connecting plates 10 to forcibly keep the connecting plates 10 in a vertical state, avoiding the difficulty of hooking caused by the suspension angle deviation of the traditional L-shaped sling, ensuring that the auxiliary hook is vertically aligned with the tilting ladle hanging shaft during hook removal and installation, and reducing manual intervention; at the same time, the structural design that keeps the connecting plates 10 vertical helps to improve the anti-deformation ability during operation, prolong the service life and enhance the structural strength.

[0038] Four positioning slots 10212 are provided on the hook shaft 1021. The four positioning slots 10212 are divided into two groups and are respectively arranged at both ends of the hook shaft 1021 and are located outside the shoulders 10211. The two positioning slots 10212 at the same end of the hook shaft 1021 are arranged axially symmetrically; on the connecting plate 10, there is a positioning card plate 1022 connected by a bolt assembly b1023 that can cooperate with the positioning slots 10212. The cooperation between the positioning slots 10212 and the positioning card plate 1022 prevents the hook shaft 1021 from axially moving in the hole of the connecting plate 10, ensuring the stability of the connection between the sling and the auxiliary hook 50 of the crane, and avoiding the risk of tilting ladle out of control caused by connection loosening.

[0039] On both sides of the connecting plate 10, there are adjusting pads II 1024 fixed by bolt assemblies b1023. One of the adjusting pads II 1024 is sleeved on the hook shaft 1021 between the positioning card plate II 1022 and the connecting plate 10, and the other adjusting pad II 1024 is sleeved on the hook shaft 1021 between the connecting plate 10 and the shaft shoulder 10211. The adjusting pads II 1024 on both sides respectively compensate for the assembly gap between the positioning card plate II 1022 and the shaft shoulder 10211, ensuring that the hook shaft 1021 is evenly stressed, avoiding an increase in the rotational resistance of the eccentric plate hook body 20 caused by the skew of the connecting plate 10, and improving the smooth operation of the lifting appliance. The pads can be made of wear-resistant alloy or high-temperature resistant materials. After wear, there is no need to replace the hook shaft 1021 as a whole. Only by replacing the pads can the accuracy be restored, reducing the maintenance cost.

[0040] Both the plate hook shaft 1011 and the hook shaft 1021 are machined from 42CrMo ultra-high-strength alloy steel, having high anti-fatigue and anti-impact properties.

[0041] The self-leveling eccentric plate hook lifting appliance for hot metal ladle tipping of the present invention eliminates the need for manual close-range operation, reduces risks such as scalding and splashing, and realizes unmanned or remote operation of high-risk operations through designs such as self-leveling positioning, anti-disengagement structure, and rigid connection.

[0042] Features such as quick alignment and precise positioning shorten the single-process time, reduce the process of multi-person cooperation, and improve the coherence of the metal smelting production line.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-leveling eccentric plate hook lifting tool for molten iron ladle tipping, comprising a connecting plate (10) capable of being connected to a secondary hook (50) of a crane, characterized in that, Two connecting plates (10) are provided, and the lower part between the two connecting plates (10) is connected to an eccentric plate hook body (20) via a plate hook shaft (1011); the eccentric plate hook body (20) is an overall arc-shaped structure, and the eccentric plate hook body (20) comprises a plate hook through hole (25) and a counterweight portion (21) located at its upper part, the plate hook through hole (25) is provided with a plate hook shaft (1011) connecting the lower parts of the two connecting plates (10), and the counterweight portion (21) is arranged on one side of the plate hook through hole (25); the eccentric plate hook body (20) also comprises a hooking portion (22) located at its lower part, and the hooking portion (22) extends to a side away from the counterweight portion (21); a top surface of an end of the hooking portion (22) away from the counterweight portion (21) is provided with a hanging groove (23).

2. The self-leveling eccentric plate hook lifting tool for hot metal ladle according to claim 1, characterized in that, A positioning block (1014) is sleeved on the plate hook shaft (1011), and the positioning block (1014) is located between the eccentric plate hook body (20) and the connecting plate (10), and the positioning block (1014) is respectively abutted against the eccentric plate hook body (20) and the connecting plate (10); and a bolt assembly a (1013) for fixing the positioning block (1014) is provided on the connecting plate (10).

3. The self-leveling eccentric plate hook sling for hot metal ladle tipping according to claim 2, characterized in that, A contact boss (10141) is provided on a side of the positioning block (1014) close to the eccentric plate hook body (20).

4. The self-leveling eccentric plate hook hanger for hot metal ladle according to claim 3, characterized in that, The plate hook shaft (1011) is provided with four positioning slots (10111), and two of the four positioning slots (10111) are arranged in a group at the two ends of the plate hook shaft (1011), and the two positioning slots (10111) located at the same end of the plate hook shaft (1011) are arranged axially symmetrically; the outer side of the connecting plate (10) is connected to a positioning card plate (1012) capable of cooperating with the positioning slot (10111) via a bolt assembly a (1013).

5. The self-leveling eccentric plate hook lifting device for molten iron ladle according to claim 4, characterized in that, An adjustment pad 1 (1015) fixed by a bolt assembly a (1013) is provided on the outer side of the connecting plate (10); the adjustment pad 1 (1015) is sleeved on the plate hook shaft (1011); the adjustment pad 1 (1015) is located between the positioning clamping plate 1 (1012) and the connecting plate (10).

6. A self-leveling eccentric plate hook lifting device for molten iron ladle tipping, characterized in that, The upper parts of the two connecting plates (10) are commonly connected to a hook shaft (1021) that can be hooked to the auxiliary hook (50) of the crane, and shaft shoulders (10211) are respectively provided at both ends of the hook shaft (1021), and the shaft shoulders (10211) abut against the connecting plates (10) and maintain the connecting plates (10) in a vertical state.

7. The self-leveling eccentric plate hook lifting tool for molten iron ladle according to claim 6, characterized in that The hook shaft (1021) is provided with four positioning slots 2 (10212), two of the four positioning slots 2 (10212) are arranged in a group at the two ends of the hook shaft (1021) and are located on the outside of the shaft shoulder (10211), and the two positioning slots 2 (10212) located at the same end of the hook shaft (1021) are arranged axially symmetrically; the connecting plate (10) is connected to a positioning plate 2 (1022) capable of cooperating with the positioning slot 2 (10212) via a bolt assembly b (1023).

8. The self-leveling eccentric plate hook lifting device for hot metal ladle tipping according to claim 7, wherein On both sides of the connecting plate (10), there are adjusting pads II (1024) fixed by bolt assemblies b (1023). One of the adjusting pads II (1024) is sleeved on the hook shaft (1021) between the positioning card plate II (1022) and the connecting plate (10), and the other adjusting pad II (1024) is sleeved on the hook shaft (1021) between the connecting plate (10) and the shaft shoulder (10211).

9. The self-leveling eccentric plate hook lifting tool for hot metal ladle tipping according to claim 6, characterized in that, The hook hanging part (22) is provided with an anti - detachment protrusion part (24), and the anti - detachment protrusion part (24) is located on the side of the hanging groove 23 away from the counterweight part (21).

10. The self-leveling eccentric plate hook sling for ladle tipping according to claim 6, characterized in that, A wear - resistant lining plate (30) is arranged in the hanging groove (23).

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