A hoisting device for converter molten iron ladle

Abstract

The present invention relates to the field of lifting technology, and specifically discloses a lifting device for a converter iron ladle, comprising: a hook, a lifting rope for lifting the hook, and a hanger hinged on the iron ladle, the uncoupling mechanism comprising a push rod rotatably mounted on the hook, an elastic member 1, a transmission assembly and a clutch assembly, the hook being connected to the lifting rope through the elastic member 1, the hinged portion of the push rod and the hook being located on the right side of the hook opening, after the iron ladle is placed on a carrier, as the lifting rope descends, the transmission assembly drives the push rod to rotate forward, when the push rod abuts against a lifting ring, the clutch assembly locks the push rod and the hook, when the lifting ring moves toward the hook opening, the clutch assembly gradually disconnects the push rod from the hook, when the push rod abuts against the lifting ring again, the clutch assembly locks the push rod and the hook again, and at the same time the push rod pushes the lifting ring out of the hook opening; the beneficial effect of the present invention is that the problem of incomplete separation between the hook and the hanger can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting, and in particular to a hoisting device for a converter iron ladle. Background Art

[0002] In the converter production process, the hoisting of the molten iron ladle is a key link connecting the blast furnace and the converter, which directly affects the production safety and efficiency. The molten iron first flows into the ladle from the blast furnace taphole through the iron ditch. The flow rate needs to be controlled during the process to prevent splashing or overflow, and ensure that the molten iron level in the ladle does not exceed 85% of the volume. The ladle usually carries hundreds of tons of high-temperature molten iron and needs to be lifted by a heavy crane through special lifting equipment. The "low speed and stability" principle must be followed during lifting to avoid sudden stops and starts that cause the molten iron to shake. The path needs to avoid people and equipment. The bottom of the ladle must be kept at a safe height of more than 1.5 meters from the ground. The iron adding process requires precise control of the tilting angle to prevent splashing. Any operational error may cause major accidents such as ladle leakage and overturning.

[0003] A Chinese patent document with announcement number CN219620685U discloses a ladle anti-slip hook and transfer device, including a ladle, a connecting arm, a hanger, an anti-slip hook assembly and a transfer bracket. The ladle is a rectangular hollow structure with an opening at the top, and the upper part of the ladle is movably connected to the hanger through the connecting arm. A hook is provided on the upper part of the hanger, and the hook is connected to the upper transfer bracket through a lifting rope. After the ladle is transferred to the designated position, the operator first moves the transfer bracket and the lifting rope to make the first hook drive the hanger to gradually deflect toward the direction of the anti-slip hook assembly. When the hanger reaches the maximum deflection angle, as the first hook continues to move downward, the hanger gradually moves toward the opening direction of the hook until the first hook is separated from the hanger.

[0004] In the above technology, in the process of disengaging the hook from the hanger, the operator needs to manually control the height of the first hook to achieve the disengagement of the hook and the hanger, and after the hook and the hanger are disengaged, the hanger needs to be deflected away from the discharge nozzle of the molten iron ladle, and when the opening of the hook is connected to the hanger, it is more convenient to connect the hook opening from the outside of the hanger toward the hanger. Therefore, if the hook and the hanger are not completely separated during the uncoupling process, then as the first hook moves away from the hanger, the hook may pull the hanger, and then pull the molten iron ladle, causing the molten iron ladle to overturn, resulting in a safety accident. Summary of the Invention

[0005] The invention provides a hoisting device for a converter iron ladle, aiming to solve the technical problem of incomplete separation of a hook and a hanger in the related art.

[0006] A lifting device for a converter iron ladle comprises a hook, a lifting rope for lifting the hook, and a hanger hinged on the iron ladle, and further comprises:

[0007] The unhooking mechanism includes a push rod rotatably mounted on the hook, an elastic member 1 disposed between the hook and the lifting rope, a transmission assembly having an input end connected to the lifting rope, and a clutch assembly for connecting the push rod and the hook. The hook is connected to the lifting rope via the elastic member 1. The hinged joint between the push rod and the hook is located to the right of the hook opening, and the hook opening is located within the rotation radius of the push rod. When the hook and the lifting rope approach each other, the transmission assembly drives the push rod to rotate forward.

[0008] After the ladle is placed on the load, as the lifting rope descends, the transmission assembly drives the push rod to rotate forward. When the push rod abuts against the lifting ring, the clutch assembly locks the push rod and the hook. When the lifting ring moves toward the opening of the hook, the clutch assembly gradually disconnects the push rod and the hook, and the push rod continues to rotate forward. When the push rod abuts against the lifting ring again, the clutch assembly locks the push rod and the hook again, and at the same time, the push rod pushes the lifting ring out of the hook opening.

[0009] The effect is that by arranging the push rod and the clutch assembly, after the molten iron ladle is placed on the load-bearing object, the weight of the molten iron ladle is borne by the load-bearing object. As the lifting rope drops vertically, the height of the hook remains unchanged due to the compression spring. As the compression spring is released, after the push rod abuts against the lifting ring, the clutch assembly locks the push rod and the lifting hook. Since the hanger is in a vertical state at this time, the hook is prevented from dropping too much vertically, which causes the push rod to directly push the hanger out of the opening of the lifting hook, thereby preventing the hanger from deflecting to the front side of the molten iron ladle and affecting subsequent operations. When the push rod abuts against the lifting ring again, the clutch assembly locks the push rod and the lifting hook again, and at the same time, the push rod pushes the lifting ring out of the opening of the hook. At this time, the push rod closes the opening of the hook, avoiding that the hook is not lowered enough, resulting in the worker controlling the hook to move backward, the lifting ring and the lifting hook are connected again, causing the hook to pull the molten iron ladle, causing the molten iron ladle to overturn and causing a safety accident.

[0010] Preferably, the transmission assembly includes a rack installed on the lifting rope, a one-way bearing provided on the push rod, and a gear rotatably installed on the outer ring of the one-way bearing for engaging with the rack. When the hook is not bearing weight, the rack is located on the lower side of the gear. When the rack moves from the upper side of the gear to the lower side of the gear, the push rod is driven to rotate forward through the one-way bearing when the gear rotates. An elastic member 2 is provided between the push rod and the hook to reset the push rod.

[0011] Preferably, the first elastic member is a compression spring.

[0012] Preferably, a second elastic member is installed between the push rod and the hook. The second elastic member is a torsion spring. Both ends of the torsion spring are respectively connected to the push rod and the hook.

[0013] The effect is that the torsion spring is used to reset the push rod after the rack and gear are disengaged.

[0014] Preferably, a sleeve is installed at the upper end of the hook, a round table is installed at the lower end of the lifting rope, the round table is slidably installed in the sleeve along the up and down directions, and the upper and lower ends of the compression spring are respectively connected to the round table and the upper end of the sleeve.

[0015] The effect is that by arranging the sleeve, the round table and the compression spring, the distance between the lifting rope and the lifting hook changes after the lifting hook bears the load, so that whether the lifting hook bears the load can be judged by utilizing the distance change.

[0016] Preferably, the clutch assembly includes a limit pin installed on the push rod for sliding along the left and right directions and a driving member for driving the limit pin to move. A mounting plate is fixedly installed on the hook. When the push rod rotates forward, when the push rod first abuts against the lifting ring, the driving member causes the limit pin to extend from the push rod, thereby abutting against the lower end surface of the mounting plate, locking the push rod and the mounting plate. When the push rod abuts against the lifting ring again, the limit pin extends from the push rod again and abuts against the front end surface of the mounting plate.

[0017] The effect is that by setting the mounting plate and the limit pin, when the limit pin abuts the lower end surface of the mounting plate, the push rod abuts the lifting ring for the first time, and when the limit pin abuts the front end surface of the mounting plate, the push rod closes the opening of the hook.

[0018] Preferably, the driving member includes a push rod slidably mounted on the push rod, an elastic member three for resetting the push rod, and an elastic member four for resetting the limit pin. The sliding direction of the push rod intersects with the sliding direction of the push rod. An inclined surface is provided on the push rod. In the initial state, the limit pin abuts against the inclined surface, and the push rod extends beyond the front end surface of the push rod. When the push rod abuts against the lifting ring, the push rod is pressed into the push rod by the lifting ring.

[0019] Preferably, a connecting rod is fixedly mounted on the push rod, the connecting rod is hinged to the push rod, and the elastic member three is a torsion spring two, the two ends of the torsion spring two are respectively connected to the connecting rod and the push rod.

[0020] The effect is that: by setting the connecting rod and the push rod, the push rod can be rotated again only after the lifting ring and the push rod are out of contact for a distance. When the push rod is locked with the hook at the opening of the hook, the push rod can close the opening of the hook before the lifting ring is completely separated from the opening of the hook.

[0021] Preferably, the elastic member 4 is a tension spring. When the limit pin extends from the push rod, the tension spring applies a pulling force to the limit pin to pull the limit pin into the push rod.

[0022] Preferably, the decoupling mechanism is provided with two groups, which are respectively located on the left and right sides of the hook.

[0023] By adopting the above technical solution, the beneficial effects of the present invention are:

[0024] By arranging a push rod on the hook and a compression spring on the hook, the hook is connected to the lifting rope through the compression spring. After the hook bears weight, the distance between the hook and the lifting rope changes. The change in the distance between the hook and the lifting rope is used to drive the push rod to rotate, thereby pushing the lifting ring out of the opening of the hook. When the lifting ring is not completely detached from the opening of the hook, the push rod and the hook are locked by the clutch assembly, so that the push rod can close the opening of the hook, preventing the hook from pulling the lifting ring, and thus preventing the ladle from overturning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a cross-sectional view of the sleeve of the present invention.

[0027] Figure 3 This is a schematic diagram of the initial contact state between the push rod and the lifting ring of the present invention.

[0028] Figure 4 This is a schematic diagram of the state in which the push rod and the lifting ring of the present invention are in contact with each other again.

[0029] Figure 5 It is a structural schematic diagram of the clutch assembly of the present invention.

[0030] Figure 6 It is a partial cross-sectional view of the push rod of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the limit pin of the present invention.

[0032] Figure 8 Schematic diagram of the structure of the push rod of the present invention.

[0033] Reference numerals:

[0034] 1. Ladle; 2. Hook; 21. Sleeve; 22. Mounting plate; 23. Limiting platform; 3. Lifting rope; 31. Round table; 32. Rack rod; 33. Annular boss; 4. Unhooking mechanism; 41. Push rod; 411. Rotating shaft; 412. Slideway 1; 413. Slideway 2; 42. Elastic part 1; 43. Transmission assembly; 431. Rack; 432. Gear; 433. Elastic part 2; 44. Clutch assembly; 441. Limiting pin; 442. Push rod; 443. Connecting rod; 444. Inclined surface; 445. Groove; 446. Elastic part 3; 447. Elastic part 4; 5. Lifting ring. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] like Figure 1 As shown, a lifting device for a converter ladle in an embodiment of the present invention comprises a hook 2, a lifting rope 3, a hanger and two sets of unhooking mechanisms 4. The lower end of the lifting rope 3 is connected to the lifting hook 2, and the hanger is hinged on the ladle 1. A lifting ring 5 for hanging in the lifting hook 2 is installed on the hanger. The two sets of unhooking mechanisms 4 are symmetrically arranged on both sides of the lifting hook 2 to ensure that the lifting ring 5 is evenly stressed and to avoid unilateral unhooking failure. After the ladle 1 is placed on the load, as the lifting rope 3 descends, the unhooking mechanism 4 is used to push the lifting ring 5 out from the opening of the lifting hook 2, and the unhooking mechanism 4 blocks the opening of the lifting hook 2 to prevent the lifting ring 5 from being connected to the lifting hook 2 again.

[0037] like Figures 1-4 As shown, the unhooking mechanism 4 includes a push rod 41, an elastic member 42, a transmission assembly 43 and a clutch assembly 44. The upper end of the hook 2 is fixedly installed with a sleeve 21 with an upper end opening, and a ring platform is installed at the upper end opening of the sleeve 21. A through hole is provided in the middle of the ring platform for the suspension rope 3 to pass through. The lower end of the suspension rope 3 is fixedly installed with a round table 31, and the round table 31 is slidably installed in the sleeve 21 along the up and down directions. The elastic member 42 is arranged in the sleeve 21. The elastic member 42 is a compression spring. The upper and lower ends of the compression spring are fixedly connected to the round table 31 and the ring platform respectively. The upper end of the round table 31 is installed with an upwardly extending limit column. The limit column is used to abut against the ring platform after the compression spring is compressed to avoid the compression spring from being squeezed and bearing weight, which causes the compression spring to deform and fail. When the sleeve 21 is There are two mounting plates 22 extending downward on the lower end surface, and the two mounting plates 22 are respectively located on the left and right sides of the hook 2. The push rod 41 is between the mounting plate 22 and the hook 2. A mounting hole is provided on the mounting plate 22, and the mounting hole is located on the right side of the opening of the hook 2. A rotating shaft 411 is fixedly installed on the end of the push rod 41 away from the hook 2. The rotating shaft 411 is passed through the mounting hole, and the opening of the hook 2 is located within the rotation radius of the push rod 41. The input end of the transmission assembly 43 is connected to the rope 3, and the output end of the transmission assembly 43 is connected to the rotating shaft 411. When the hook 2 and the rope 3 approach each other, the transmission assembly 43 drives the push rod 41 to rotate forward, and the clutch assembly 44 is used to connect or disconnect the push rod 41 with the hook 2.

[0038] When the hook 2 lifts the ladle 1 from the carrier, since the hook 2 bears the weight of the ladle 1, the lifting rope 3 first moves upward relative to the hook 2, and the round table 31 moves upward in the sleeve 21 to compress the compression spring and accumulate force. When the upper end face of the limit column abuts the lower end face of the ring table, the lifting rope 3 drives the sleeve 21 to move upward through the limit column, and then drives the hook 2 to move upward, thereby lifting the ladle 1.

[0039] After the hook 2 places the ladle 1 on the load, as the rope 3 continues to descend, the compression spring is gradually released. At this time, the hook 2 and the rope 3 are close to each other, and the transmission component 43 drives the push rod 41 to rotate forward. When the front end surface of the push rod 41 abuts against the lifting ring 5, the clutch component 44 locks the push rod 41 with the mounting plate 22, and the compression spring stops releasing. At this time, the worker controls the lifting rope 3 to gradually move backward and downward, and the hook 2 drives the hanger to deflect backward on the ladle 1 through the lifting ring 5. When the hanger rotates to the maximum deflection angle on the ladle 1, the lifting ring 5 begins to gradually move in the hook 2. Gradually moves toward the opening of the hook 2, the clutch assembly 44 gradually disconnects the push rod 41 from the hook 2. When the eye 5 moves inside the hook 2 to the opening close to the hook 2, the clutch assembly 44 completely disconnects the push rod 41 from the hook 2. At this time, the compression spring continues to release, and the hook 2 and the rope 3 continue to approach each other. The transmission assembly 43 drives the push rod 41 to rotate forward again. When the front end face of the push rod 41 abuts against the eye 5 again, the clutch assembly 44 locks the push rod 41 with the mounting plate 22 again. At the same time, the push rod 41 also pushes the eye 5 out of the opening of the eye 5.

[0040] like Figure 2-Figure 5 、 Figure 8 As shown, the transmission assembly 43 includes a rack 431, a one-way bearing, a gear 432 and an elastic member 2 433. An annular boss 33 is fixedly mounted on the lifting rope 3. A rack rod 32 extends downwardly from the lower end surface of the annular boss 33. The rack 431 is mounted on the lower end of the rack rod 32. The inner ring of the one-way bearing is sleeved on the rotating shaft 411, and the inner ring of the one-way bearing is fixedly connected to the rotating shaft 411. The gear 432 is sleeved on the outer ring of the one-way bearing, and the gear 432 is fixedly connected to the outer ring of the one-way bearing. The elastic member 2 433 is arranged between the push rod 41 and the mounting plate 22. The elastic member 2 433 is a torsion spring 1. The two ends of the torsion spring 1 are respectively fixedly connected to the push rod 41 and the mounting plate 22. When the hook 2 is not bearing weight, the compression spring is in its original length state. At this time, the rack 431 is located on the lower side of the gear 432.

[0041] When the hook 2 bears the weight, the compression spring is compressed first, and the hook 2 and the rope 3 move away from each other. At this time, the rope 3 drives the rack 431 to move upward relative to the gear 432 through the rack rod 32. After the rack 431 is engaged with the gear 432, as the rack 431 moves upward relative to the gear 432, the rack 431 drives the gear 432 to rotate in the opposite direction. When the gear 432 rotates in the opposite direction, the outer ring of the one-way bearing is driven to rotate idly relative to the inner ring. When the hook 2 and the rope 3 approach each other, the rack 431 moves downward relative to the gear 432. As the rack 431 moves downward relative to the gear 432, the rack 431 drives the gear 432 to rotate forward. When the gear 432 rotates forward, the outer ring of the one-way bearing drives the inner ring to rotate forward, and then drives the push rod 41 to rotate forward through the rotating shaft 411. When the push rod 41 rotates forward, the torsion spring 1 gradually accumulates force. When the push rod 41 is completely out of contact with the hook 2, the compression spring returns to its original length. When the rack 431 moves to the lower side of the gear 432, the rack 431 and the gear 432 are disengaged. At this time, the torsion spring 1 is released, driving the push rod 41 to reverse and reset.

[0042] like Figure 2-Figure 8 As shown, the clutch assembly 44 includes a limit pin 441 and a driving member. A slide groove 412 is provided on the end of the push rod 41 away from the hook 2. The limit pin 441 is slidably installed in the slide groove 412 along the left and right directions. In the initial state, the limit pin 441 is retracted into the slide groove 412, and a limit platform 23 is provided on the front end surface of the mounting plate 22.

[0043] When the push rod 41 rotates forward, when the front end face of the push rod 41 first abuts against the lifting ring 5, the driving member drives the limit pin 441 to extend from the push rod 41, and the limit pin 441 abuts against the lower end face of the mounting plate 22. At this time, the limit pin 441 is blocked by the lower end face of the mounting plate 22, so that the push rod 41 cannot rotate forward, thereby achieving locking between the push rod 41 and the mounting plate 22. When the lifting ring 5 begins to gradually move toward the opening of the hook 2 in the hook 2, the driving member drives the limit pin 441 to gradually retract into the push rod 41. When the lifting ring 5 moves in the hook 2 to a position close to the opening of the hook 2, the driving member drives the limit pin 441 to completely retract into the push rod 41, thereby releasing the locking state between the push rod 41 and the mounting plate 22.

[0044] Then, as the compression spring continues to be released, the push rod 41 continues to rotate forward. When the push rod 41 abuts against the lifting ring 5 again, the driving part drives the limit pin 441 to extend from the push rod 41 again. When the push rod 41 rotates forward to push the lifting ring 5 out from the opening of the hook 2, the limit pin 441 abuts against the front end surface of the limit platform 23 and the mounting plate 22. At this time, the limit pin 441 is blocked by the front end surface of the limit platform 23 and the mounting plate 22, so that the push rod 41 cannot rotate forward, thereby achieving locking between the push rod 41 and the mounting plate 22.

[0045] When the lifting rope 3 drives the hook 2 to move backward, so that the lifting ring 5 is completely out of contact with the lifting hook 2 and the push rod 41, the driving part drives the limit platform 23 to retract into the push rod 41. When the limit pin 441 is out of contact with the limit platform 23 and the front end surface of the mounting plate 22, the compression spring continues to release, causing the rack 431 to move downward to the lower side of the gear 432 and disengage from the gear 432. During this process, the push rod 41 first rotates forward driven by the gear 432, and then the rack 431 disengages from the gear 432. Once the torsion spring is released, it drives the push rod 41 to reverse and reset.

[0046] like Figure 2-Figure 8 As shown, the driving member includes a push rod 442, an elastic member 3 446, an elastic member 447 and a connecting rod 443. One end of the connecting rod 443 is hinged to the end of the front end surface of the push rod 41 away from the rotating shaft 411. The push rod 442 is fixedly installed on the connecting rod 443, and the push rod 442 is arc-shaped as a whole. The lower end of the push rod 442 is provided with an inclined surface 444. The push rod 41 is provided with an arc-shaped sliding groove 2 413 that passes through both the front and rear end surfaces, and the sliding groove 2 413 and the sliding groove 1 413 are connected. 12 is connected, the push rod 442 is slidably installed in the second slide groove 413, the limit pin 441 is provided with a groove 445, the elastic member three 446 is arranged at the hinge of the connecting rod 443 and the push rod 41, the elastic member three 446 is a torsion spring two, and the two ends of the torsion spring two are respectively fixedly connected to the connecting rod 443 and the push rod 41, the elastic member four 447 is arranged in the first slide groove 412, the elastic member four 447 is a tension spring, and the two ends of the tension spring are respectively fixedly connected to the push rod 41 and the limit pin 441.

[0047] In the initial state, the connection between the top rod 442 and the connecting rod 443 is away from the front end surface of the push rod 41. At this time, most of the connecting rod 443 exceeds the front end surface of the push rod 41. At the same time, the inclined surface 444 on the top rod 442 abuts against the upper edge of the groove 445 on the limit pin 441. Before the push rod 41 abuts against the lifting ring 5, the connecting rod 443 abuts against the lifting ring 5 first. As the push rod 41 continues to rotate forward, the connecting rod 443 is squeezed by the lifting ring 5 and drives the top rod 442 toward It moves toward the rear end face of the push rod 41. At this time, the inclined surface 444 pushes the limit pin 441 out of the push rod 41. When the ring 5 moves in the hook 2 toward the opening of the hook 2, the ring 5 is out of contact with the push rod 41, and the connecting rod 443 is gradually reset under the drive of the torsion spring 2. When the ring 5 moves in the hook 2 to the opening close to the hook 2, the connecting rod 443 completes the reset. At this time, the limit pin 441 retracts into the push rod 41 under the pull of the tension spring.

[0048] The specific working principle of the embodiment of the present invention is as follows:

[0049] When the ladle 1 is lifted from the supporting object, since the hook 2 bears the weight of the ladle 1, when the lifting rope 3 moves upward, the compression spring is first subjected to force and compressed. When the limit column abuts against the ring platform, the lifting rope 3 drives the sleeve 21 to move upward through the limit column, and then drives the hook 2 to move upward, thereby lifting the ladle 1.

[0050] After the hook 2 places the ladle 1 on the load, as the lifting rope 3 continues to descend, the compression spring is gradually released. At this time, the hook 2 and the lifting rope 3 approach each other, and the lifting rope 3 drives the rack 431 to move downward relative to the gear 432 through the annular boss 33. As the rack 431 moves downward, the rack 431 drives the gear 432 to rotate forward. When the gear 432 rotates forward, the outer ring of the one-way bearing drives the inner ring to rotate forward, and then drives the push rod 41 to rotate forward through the rotating shaft 411. When the push rod 41 rotates forward, the torsion spring gradually accumulates force. At the same time, when the connecting rod 443 contacts the lifting ring 5, as the push rod 41 continues to rotate forward, the connecting rod 443 is squeezed by the lifting ring 5 and drives the push rod 442 to move toward the rear end face of the push rod 41. At this time, the inclined surface 444 pushes the limit pin 441 The lifting ring 5 is disengaged from the push rod 41, and the connecting rod 443 is gradually reset under the drive of the torsion spring 2. When the ring 5 moves to the opening close to the hook 2 in the hook 2, the connecting rod 443 is reset. The limiting pin 441 is now blocked by the limiting platform 23 and the front end surface of the mounting plate 22, so that the push rod 41 cannot rotate forward, thereby separating the push rod 41 from the mounting plate 22 and the connecting rod 443. The locking mechanism 42 is locked again, so that the opening of the hook 2 is closed by the push rod 41, preventing the eye 5 from entering the hook 2 again, and then the rope 3 continues to drive the hook 2 to move backward. When the eye 5 is completely out of contact with the hook 2 and the push rod 41, the connecting rod 443 is reset again under the drive of the torsion spring 2. At the same time, the limit pin 441 is retracted into the push rod 41 again under the pull of the tension spring. When the limit pin 441 is out of contact with the limit platform 23 and the front end surface of the mounting plate 22, the compression spring is completely released, causing the rack 431 to move downward to the lower side of the gear 432 and disengage from the gear 432. In this process, the push rod 41 first rotates forward under the drive of the gear 432, and then the rack 431 is disengaged from the gear 432. The release of the torsion spring drives the push rod 41 to reverse and reset.

[0051] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A lifting device for a converter ladle, comprising a hook, a lifting rope for lifting the hook, and a hanger hinged on the ladle, characterized in that: Also includes: The unhooking mechanism comprises a push rod rotatably mounted on the hook, an elastic member 1 arranged between the hook and the lifting rope, a transmission assembly connected to the lifting rope at the input end, and a clutch assembly for connecting the push rod and the hook, the hook being connected to the lifting rope through the elastic member 1, the hinged joint of the push rod and the hook being located on the right side of the lifting rope opening, and the lifting rope opening being located within the rotation radius of the push rod, when the lifting rope and the lifting rope are close to each other, the transmission assembly drives the push rod to rotate forward; after the molten iron ladle is placed on the load, as the lifting rope descends, the transmission assembly drives the push rod to rotate forward, when the push rod abuts against the lifting ring, the clutch assembly locks the push rod and the hook, when the lifting ring moves toward the lifting hook opening, the clutch assembly gradually disconnects the push rod and the hook, and the push rod continues to rotate forward, when the push rod abuts against the lifting ring again, the clutch assembly locks the push rod and the hook again, and at the same time the push rod pushes the lifting ring out of the lifting hook opening; The transmission assembly includes a rack mounted on the lifting rope, a one-way bearing provided on the push rod, and a gear rotatably mounted on the outer ring of the one-way bearing for engaging with the rack. When the hook is not bearing weight, the rack is located on the lower side of the gear. When the rack moves from the upper side of the gear to the lower side of the gear, the push rod is driven to rotate forward through the one-way bearing when the gear rotates. An elastic member 2 is provided between the push rod and the hook to reset the push rod. The clutch assembly includes a limit pin installed on the push rod for sliding along the left and right directions and a driving member for driving the limit pin to move. A mounting plate is fixedly installed on the hook. When the push rod rotates forward, when the push rod first abuts against the lifting ring, the driving member causes the limit pin to extend from the push rod, thereby abutting against the lower end surface of the mounting plate, locking the push rod and the mounting plate. When the push rod abuts against the lifting ring again, the limit pin extends from the push rod again and abuts against the front end surface of the mounting plate.

2. A hoisting device for a converter ladle according to claim 1, characterized in that: The first elastic member is a compression spring.

3. A hoisting device for a converter ladle according to claim 1, characterized in that: A second elastic member is installed between the push rod and the hook. The second elastic member is a first torsion spring. Two ends of the first torsion spring are respectively connected to the push rod and the hook.

4. A hoisting device for a converter ladle according to claim 2, characterized in that: The upper end of the hook is provided with a sleeve, the lower end of the lifting rope is provided with a round table, the round table is slidably installed in the sleeve along the up and down directions, and the upper and lower ends of the compression spring are respectively connected to the round table and the upper end of the sleeve.

5. The hoisting device for converter ladle according to claim 1, characterized in that: The driving member includes a push rod slidably mounted on the push rod, an elastic member three for resetting the push rod, and an elastic member four for resetting the limit pin. The sliding direction of the push rod intersects with the sliding direction of the push rod. An inclined surface is provided on the push rod. In the initial state, the limit pin abuts against the inclined surface, and the push rod extends beyond the front end surface of the push rod. When the push rod abuts against the lifting ring, the push rod is pressed into the push rod by the lifting ring.

6. A hoisting device for a converter ladle according to claim 5, characterized in that: A connecting rod is fixedly mounted on the push rod, the connecting rod is hinged to the push rod, and the elastic member three is a torsion spring two, the two ends of the torsion spring two are respectively connected to the connecting rod and the push rod.

7. The hoisting device for converter ladle according to claim 5, characterized in that: The elastic member 4 is a tension spring. When the limit pin extends from the push rod, the tension spring applies a pulling force to the limit pin to pull the limit pin into the push rod.

8. The hoisting device for converter ladle according to claim 1, characterized in that: The decoupling mechanism is provided with two groups, which are respectively located on the left and right sides of the hook.

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