A hot working hoisting device for large ring forgings

Abstract

The present invention relates to the technical field of crane lifting tools, and specifically discloses a hot processing lifting device for large ring forgings. A plurality of hooks are arranged along the circumferential direction of the upper edge of the second suspension plate. The hooks are connected to the first suspension plate through chains and can slide along the radial direction of the second suspension plate. An upper guide wheel and a lower guide wheel that respectively roll-contact with the second suspension plate are rotatably arranged on the hooks. A control plate is rotatably arranged coaxially at the lower end of the second suspension plate. The outer circumference of the control plate has a driving surface that cooperates with the plurality of hooks one by one. A limiting member for locking and unlocking the control plate is slidably arranged along the vertical direction on the second suspension plate. A reset member for driving the control plate to reset is slidably arranged on the second suspension plate; when the upper end surface of the workpiece abuts against the lower end surface of the control plate, the limiting member can be upwardly abutted by the workpiece, so that the limiting member unlocks the control plate. Subsequently, when the first suspension plate moves upward relative to the second suspension plate, the plurality of hooks can gather towards the middle to hook the workpiece; the present invention is beneficial to the stable and convenient lifting of the annular workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of crane lifting tools, and particularly relates to a hot processing lifting device for large ring forgings. Background Art

[0002] Large ring forgings refer to annular metal components formed on a ring rolling mill through a hot rolling process. Their typical characteristics are a diameter exceeding 5 meters and a weight of over 300 tons, and they are widely used in fields such as nuclear power, aerospace, and shipbuilding. Since large ring forgings need to be frequently transferred between equipment such as heating furnaces, forging presses, and ring rolling mills during the processing, special lifting tools must be used for the hot processing of large ring forgings. They are not only handling tools but also core equipment for ensuring process accuracy, production safety, and economic benefits.

[0003] Chinese Patent with Publication No. CN111960248B discloses a hot processing lifting device for large ring forgings, which includes a top lifting lug frame, an intermediate crossbeam support frame, and a bottom hook; the top lifting lug frame includes a lifting ring, a lifting cylinder, and lifting lugs; the lifting ring is fixedly connected to the upper part of the lifting cylinder, and more than 3 lifting lugs are evenly distributed and fixedly connected to the outer wall surface of the middle and lower parts of the lifting cylinder; the intermediate crossbeam support frame includes a support ring, a crossbeam, outer reinforcing ribs, and inner reinforcing ribs; the support ring is an annular structure, the crossbeam is a strip-shaped structure, and more than 3 crossbeams are evenly distributed and fixedly connected to the upper end surface of the support ring. The projection of the crossbeam on the plane where the upper end surface of the support ring is located has one end within the annular area surrounded by the support ring and the other end outside the annular area surrounded by the support ring; outer reinforcing ribs and inner reinforcing ribs are respectively provided on the inner and outer wall surfaces of the support ring below the crossbeam; one end of the outer reinforcing rib is fixedly connected to the outer wall surface of the support ring, and the upper end of the outer reinforcing rib is fixedly connected to the lower wall surface of the crossbeam; one end of the inner reinforcing rib is fixedly connected to the inner wall surface of the support ring, and the upper end of the outer reinforcing rib is fixedly connected to the lower wall surface of the crossbeam; more than 3 L-shaped hook blocks are evenly distributed and fixedly connected to the support ring; the upper end surface of the lower horizontal structure of the L-shaped hook block is fixedly connected to the lower end surface of the support ring, and the side wall surface of the vertical structure of the L-shaped hook block close to the horizontal structure is fixedly connected to the outer wall surface of the support ring; the number of lifting lugs is the same as that of the L-shaped hook blocks, and the L-shaped hook blocks and the lifting lugs are respectively connected one-to-one through lifting chains; a lifting chain is provided on the crossbeam outside the annular area surrounded by the support ring. One end of the lifting chain is connected to the crossbeam, and the other end of the lifting chain is connected to a bottom hook.

[0004] During the implementation of the above technical solution, for ring forgings with different diameters, it is necessary to manually connect the bottom hooks to the corresponding holes on the crossbeam one by one, and then it is necessary to manually hook the bottom hooks under the ring forgings one by one. This process is relatively inconvenient to operate. Since the bottom hooks are connected to the crossbeam through lifting chains, the bottom hooks will swing during the process of manually hooking the bottom hooks under the ring forgings one by one, which is not conducive to the bottom hooks being stably hooked under the ring forgings. Summary of the Invention

[0005] The present invention provides a hot - working hoisting device for large - scale ring forgings, aiming to solve the problem in the related art that it is difficult to hoist annular workpieces stably and conveniently.

[0006] A hot - working hoisting device for large - scale ring forgings includes a first suspension plate and a second suspension plate arranged coaxially. A plurality of hooks are arranged along the circumferential direction of the second suspension plate. The hooks are connected to the first suspension plate through chains and can slide along the radial direction of the second suspension plate. An upper guide wheel and a lower guide wheel that respectively roll - contact with the second suspension plate are rotatably arranged on the hooks. A control plate is coaxially and rotatably arranged at the lower end of the second suspension plate. The outer periphery of the control plate has a driving surface that cooperates with the plurality of hooks one by one. A limiting member for locking and unlocking the control plate is slidably arranged on the second suspension plate in the vertical direction. A reset member for driving the control plate to reset is slidably arranged on the second suspension plate. When the upper end surface of the workpiece abuts against the lower end surface of the control plate, the limiting member can be upwardly abutted by the workpiece, so that the limiting member unlocks the control plate. Subsequently, when the first suspension plate moves upward relative to the second suspension plate, the plurality of hooks can gather towards the middle to hook the workpiece, and the hooks can drive the control plate to rotate. When the reset member is pulled to move away from the axis of the second suspension plate, the limiting member can lock the control plate, and the hooks can be reset.

[0007] The present invention can realize the clamping of the workpiece by controlling the up - and - down movement of the first suspension plate. After the workpiece is hoisted in place, pulling the reset member can reset the hooks and make the hooks disengage from the clamping of the workpiece.

[0008] Preferably, a driving wheel that rolls - contacts with the driving surface is rotatably arranged on the hook, so that when the hook moves towards the axis of the second suspension plate, it can smoothly drive the control plate to rotate.

[0009] Preferably, the upper guide wheel rolls - contacts with the upper end surface of the second suspension plate, and the lower guide wheel rolls - contacts with the lower end surface of the second suspension plate. The arrangement of the upper guide wheel and the lower guide wheel enables the hook to slide smoothly along the radial direction of the second suspension plate.

[0010] Preferably, a first chute for the hook to slide is arranged along the circumferential direction of the second suspension plate. The first chute extends along the radial direction of the second suspension plate. One end of the first chute away from the axis of the second suspension plate is open, and a stop block is installed at one end of the first chute away from the axis of the second suspension plate.

[0011] Preferably, the hook is L - shaped, and an auxiliary member for supporting the workpiece is rotatably arranged on the hook through an elastic member I.

[0012] Preferably, the hook includes a first supporting part and a connecting arm. The auxiliary member is L - shaped and includes a connecting rod that cooperates with the connecting arm and a second supporting part that cooperates with the first supporting part. The arrangement of the auxiliary member is beneficial to maintaining the stability of the workpiece during hoisting.

[0013] Preferably, one end of the chain away from the first suspension plate is connected to the top of the hook.

[0014] Preferably, a first guiding groove cooperating with the limiting member is formed on the control board. The limiting member includes a first limiting rod and a second limiting rod arranged in parallel. A first through hole for the first limiting rod to slide and a second through hole cooperating with the second limiting rod are formed on the second suspension plate. The first limiting rod is slidably connected to the first guiding groove, and a jack cooperating with the second through hole is formed on the control board.

[0015] Preferably, the first guiding groove is coaxial with the second suspension plate. The length of the first limiting rod is greater than that of the second limiting rod. When the second limiting rod is inserted into the jack, the control board is locked by the limiting member. When the second limiting rod disengages upward from the jack, the control board is unlocked by the limiting member.

[0016] Preferably, a second guiding groove is formed on the control board, and a third guiding groove for the reset member to slide is formed on the second suspension plate. The second guiding groove and the third guiding groove are vertically staggered. The reset member is slidably connected to the second guiding groove. When the reset member is pulled, the control board can drive the hook to reset through the cooperation of the reset member with the second guiding groove and the third guiding groove.

[0017] With the above technical solutions, the beneficial effects of the present invention are as follows: When the second suspension plate moves downward and the upper end surface of the workpiece abuts against the lower end surface of the control board, the control board is unlocked by the limiting member. Then, as the first suspension plate is slowly lifted upward, multiple hooks can respectively gather toward the middle along the corresponding first sliding grooves, so that the first supporting part can move below the workpiece. As the first suspension plate is continuously and slowly lifted upward, the connecting arm abuts against the outer side surface of the workpiece. Therefore, the first supporting part will move upward relative to the workpiece until it abuts against the bottom of the workpiece. At this time, multiple auxiliary parts can all abut against the bottom of the workpiece, which is beneficial to maintaining the stability of the workpiece during the hoisting process. Then, as the first suspension plate is continuously and slowly lifted upward, the hook can lift the workpiece; after the workpiece is hoisted to the designated position, control the first suspension plate to slowly drop a certain distance so that the first supporting part and the second supporting part are completely disengaged from the workpiece and the second supporting part is away from the lower end surface of the workpiece. Then, manually pull the hook ring through the auxiliary rod to make the reset member move along the third guiding groove to one end away from the axis of the second suspension plate and reset. At this time, the limiting member can be inserted into the second through hole and the jack under its own weight to lock the control board, which is convenient and efficient to operate. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure on the hook of the present invention.

[0020] Figure 3 It is a schematic diagram of the cooperation between the control board and the second suspension plate of the present invention.

[0021] Figure 4 This is a schematic diagram of the second suspension plate of the present invention.

[0022] Figure 5 This is a schematic diagram showing the cooperation of the first limiting rod, the control board and the second suspension plate of the present invention.

[0023] Figure 6 This is a top view of the second suspension plate of the present invention.

[0024] Figure 7 This is a top view of the control board of the present invention.

[0025] Reference numerals: 10, the first suspension plate; 20, the second suspension plate; 201, the first sliding groove; 202, the first through hole; 203, the second through hole; 204, the third guiding groove; 21, the limiting member; 211, the first limiting rod; 212, the second limiting rod; 22, the reset member; 221, the hook ring; 23, the stop block; 30, the hook; 301, the first supporting portion; 302, the connecting arm; 31, the upper guiding wheel; 32, the lower guiding wheel; 33, the driving wheel; 34, the auxiliary member; 340, the first elastic member; 341, the connecting rod; 342, the second supporting portion; 40, the chain; 50, the control board; 501, the driving surface; 502, the first guiding groove; 503, the second guiding groove; 504, the insertion hole; 51, the mounting rod; 52, the supporting wheel. Detailed Description of the Invention

[0026] The embodiments of the present invention will be described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] Refer to Figures 1-4 , a hot processing hoisting device for large ring forgings, including a coaxially arranged first suspension plate 10, a second suspension plate 20 and a control board 50. The first suspension plate 10 is connected to the hoisting rope of a crane. A plurality of hooks 30 are evenly arranged along the circumference of the second suspension plate 20. The hooks 30 are connected to the first suspension plate 10 through a chain 40 and can slide along the radial direction of the second suspension plate 20. In this embodiment, a first sliding groove 201 for the hook 30 to slide is arranged along the circumference of the second suspension plate 20. The first sliding groove 201 extends along the radial direction of the second suspension plate 20. One end of the first sliding groove 201 far from the axis of the second suspension plate 20 is an opening. A stop block 23 is installed at one end of the first sliding groove 201 far from the axis of the second suspension plate 20. The stop block 23 is used to limit the hook 30 to prevent the hook 30 from detaching from the second suspension plate 20.

[0028] The hook 30 is L-shaped. The hook 30 includes a first support portion 301 and a connecting arm 302. One end of the chain 40 far from the first suspension plate 10 is connected to the top of the connecting arm 302. An upper guide wheel 31, a lower guide wheel 32 and a driving wheel 33 are rotatably installed on the connecting arm 302. The upper guide wheel 31 is in rolling contact with the upper end face of the second suspension plate 20, and the lower guide wheel 32 is in rolling contact with the lower end face of the second suspension plate 20. The outer periphery of the control plate 50 has a driving surface 501 that cooperates with the driving wheels 33 on the plurality of hooks 30 one by one. The driving wheel 33 is in rolling contact with the driving surface 501. With the assistance of the upper guide wheel 31, the lower guide wheel 32 and the driving wheel 33, the first support portion 301 is in a horizontal state, and the hook 30 can stably slide along the radial direction of the second suspension plate 20.

[0029] An auxiliary member 34 for supporting the workpiece is rotatably provided on the hook 30 through a first elastic member 340. The first elastic member 340 is a spring. The auxiliary member 34 is L-shaped. The auxiliary member 34 includes a connecting rod 341 that cooperates with the connecting arm 302 and a second support portion 342 that cooperates with the first support portion 301. The first elastic member 340 is installed at one end of the connecting rod 341 far from the second support portion 342. One end of the first elastic member 340 far from the connecting rod 341 is fixedly connected to the connecting arm 302. In the initial state, under the action of the first elastic member 340, the second support portion 342 can protrude upward from the upper end face of the first support portion 301. During the hot working process, since the surface of the workpiece is not completely flat, when the first support portions 301 of the plurality of hooks 30 are hooked on the bottom of the workpiece, it cannot be ensured that the first support portions 301 of each hook 30 are in contact with the bottom of the workpiece. Therefore, during the hoisting process of the workpiece, if only the first support portions 301 of two hooks 30 are in contact with the bottom of the workpiece, at this time, the workpiece will shake during the hoisting process, which is not conducive to the safe progress of hoisting. However, since the auxiliary member 34 is connected to the hook 30 through the first elastic member 340, the second support portion 342 can protrude upward from the upper end face of the first support portion 301, so that the auxiliary members 34 on the hooks 30 can all be in contact with the bottom of the workpiece, which is conducive to maintaining the stability of the workpiece during the hoisting process.

[0030] Reference Figures 2-7 , the control plate 50 is coaxially and rotatably connected to the second suspension plate 20. In this embodiment, the second suspension plate 20 is annular. A plurality of support components are uniformly installed on the inner ring side of the control plate 50 along its circumferential direction. The support components are located on the inner ring side of the second suspension plate 20. The support components include a mounting rod 51 fixedly connected to the control plate 50 and a support wheel 52 rotatably provided on the mounting rod 51. The support wheel 52 is located above the second suspension plate 20 and is in rolling contact with the upper end face of the second suspension plate 20.

[0031] A limiting member 21 for locking and unlocking the control board 50 is vertically slidably provided on the upper edge of the second hanging tray 20. A first guiding groove 502 cooperating with the limiting member 21 is formed on the control board 50. The first guiding groove 502 is arc-shaped and coaxial with the second hanging tray 20. The limiting member 21 includes a first limiting rod 211 and a second limiting rod 212 arranged in parallel. The length of the first limiting rod 211 is greater than that of the second limiting rod 212. A first through hole 202 for the first limiting rod 211 to slide and a second through hole 203 cooperating with the second limiting rod 212 are formed on the second hanging tray 20. The first limiting rod 211 is slidably connected with the first guiding groove 502. When the control board 50 is locked by the limiting member 21, the lower end of the first limiting rod 211 extends downward out of the control board 50. A jack 504 cooperating with the second through hole 203 is formed on the control board 50. When the second limiting rod 212 is inserted into the second through hole 203 and the jack 504, the control board 50 is locked by the limiting member 21. When the second limiting rod 212 disengages upward from the jack 504, the control board 50 is unlocked by the limiting member 21.

[0032] It can be understood that the first limiting rod 211 can be slidably connected with the second hanging tray 20 through a spring. So that when the second through hole 203 and the jack 504 are vertically aligned, under the action of its own weight and the auxiliary pulling force of the spring, the second limiting rod 212 can be inserted into the second through hole 203 and the jack 504, so that the limiting member 21 can successfully lock the control board 50.

[0033] A reset member 22 for driving the control board 50 to reset is slidably provided on the second hanging tray 20. A second guiding groove 503 is formed on the control board 50. A third guiding groove 204 for the reset member 22 to slide is formed on the second hanging tray 20. The second guiding groove 503 and the third guiding groove 204 are vertically staggered. The reset member 22 is slidably connected with the second guiding groove 503. The top of the reset member 22 has a hook 221 for facilitating manual pulling of the reset member 22.

[0034] Specific working principle: Refer to Figures 1-7 , in the initial state, the control board 50 is locked by the limiting member 21, and the reset member 22 is located at one end of the third guiding groove 204 away from the axis of the second hanging tray 20.

[0035] Then, the hanging plate 20 is controlled to move to the top of the annular workpiece and make the hanging plate 20 and the workpiece in an approximately coaxial state. Then, the hanging plate 20 is controlled to move downward and make the upper end surface of the workpiece stop against the lower end surface of the control plate 50. At this time, the limit rod 1 211 is pushed upward by the workpiece to make the limit rod 212 disengage upward from the socket 504, so that the control plate 50 is unlocked by the limit member 21. Then, as the hanging plate 10 is slowly lifted upward, the multiple hooks 30 can gather toward the middle along the corresponding slide groove 1 201 respectively, and the driving wheel 33 stops at the driving surface 501 to make the control plate 50 rotate counterclockwise (looking from top to bottom along the axial direction of the hanging plate 20), and the reset member 22 moves along the guide groove 3 204 to approach the hanging plate. The disk 20 moves in the direction of the axis, so that the support part 301 can move to the bottom of the workpiece. As the hanging plate 10 continues to be slowly lifted upward, the connecting arm 302 stops at the outer side of the workpiece. Therefore, the support part 301 will move upward relative to the workpiece until it stops at the bottom of the workpiece. At this time, multiple auxiliary parts 34 can stop at the bottom of the workpiece, which is beneficial to maintain the stability of the workpiece during the lifting process. Subsequently, as the hanging plate 10 continues to be slowly lifted upward, the hook 30 can lift the workpiece; after the workpiece is lifted, the distance between the upper end face of the workpiece and the lower end face of the control plate 50 is much greater than the length of the control plate 50 when the control plate 50 is locked by the limit member 21.

[0036] After the workpiece is hoisted to the designated position, the hanging plate 10 is controlled to slowly fall until the workpiece contacts the pad on the table at the designated position, and then the hanging plate 10 is controlled to slowly fall for a distance so that the support part 1 301 and the support part 2 342 are completely separated from the workpiece and the support part 2 342 is far away from the lower end surface of the workpiece. At this time, the distance between the upper end surface of the workpiece and the lower end surface of the control plate 50 is still greater than the lower end surface of the control plate 50 when the control plate 50 is locked by the limiter 21. 0, and then manually pull the hook ring 221 through the auxiliary rod to move the reset member 22 along the guide groove three 204 to the end away from the axis of the hanging plate two 20 and reset it. During this process, the hanging plate two 20 will move up a short distance relative to the hanging plate one 10. At this time, the limit member 21 can be inserted into the through hole two 203 and the socket 504 under the action of its own weight, so that the limit member 21 locks the control board 50. At this point, the lifting device is completely separated from the workpiece, and then the crane is controlled to move the lifting device away from the workpiece.

[0037] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A hot working hoisting device for large ring forgings, comprising a first suspension plate (10) and a second suspension plate (20) arranged coaxially, characterized in that: A plurality of hooks (30) are provided along the circumference of the second suspension plate (20). The hooks (30) are connected to the first suspension plate (10) through chains (40) and can slide along the radial direction of the second suspension plate (20). An upper guide wheel (31) and a lower guide wheel (32) that are respectively in rolling contact with the second suspension plate (20) are rotatably provided on the hook (30). A control plate (50) is rotatably provided coaxially at the lower end of the second suspension plate (20). The outer circumference of the control plate (50) has a driving surface (501) that cooperates with the plurality of hooks (30) one by one. A limiting member (21) for locking and unlocking the control plate (50) is slidably provided on the second suspension plate (20) in the vertical direction. A reset member (22) for driving the control plate (50) to reset is slidably provided on the second suspension plate (20); when the upper end surface of the workpiece abuts against the lower end surface of the control plate (50), the limiting member (21) can be abutted upward by the workpiece, so that the limiting member (21) unlocks the control plate (50). Subsequently, when the first suspension plate (10) moves upward relative to the second suspension plate (20), the plurality of hooks (30) can gather toward the middle to hook the workpiece, and the hooks (30) can drive the control plate (50) to rotate; when the reset member (22) is pulled to move the reset member (22) away from the axis of the second suspension plate (20), the limiting member (21) can lock the control plate (50), and the hooks (30) can reset; a driving wheel (33) that is in rolling contact with the driving surface (501) is rotatably provided on the hook (30).

2. The hot processing hoisting device for a large ring forging according to claim 1, characterized in that, The upper guide wheel (31) is in rolling contact with the upper end surface of the second suspension plate (20), and the lower guide wheel (32) is in rolling contact with the lower end surface of the second suspension plate (20).

3. The hot processing hoisting device for a large ring forging according to claim 1, wherein, A first chute (201) for the hook (30) to slide is provided along the circumference of the second suspension plate (20). The first chute (201) extends along the radial direction of the second suspension plate (20). One end of the first chute (201) away from the axis of the second suspension plate (20) is an opening, and a stop block (23) is installed at one end of the first chute (201) away from the axis of the second suspension plate (20).

4. A hot working hoisting device for large ring forgings according to claim 1, characterized in that, The hook (30) is L-shaped, and an auxiliary member (34) for supporting the workpiece is rotatably provided on the hook (30) through an elastic member I (340).

5. The hot processing hoisting device for a large ring forging according to claim 4, wherein, The hook (30) includes a first support portion (301) and a connecting arm (302). The auxiliary member (34) is L-shaped and includes a connecting rod (341) that cooperates with the connecting arm (302) and a second support portion (342) that cooperates with the first support portion (301).

6. The hot processing hoisting device for a large ring forging according to claim 1, characterized in that, One end of the chain (40) away from the first suspension plate (10) is connected to the top of the hook (30).

7. A hot working hoisting device for large ring forgings according to claim 1, characterized in that, A first guide groove (502) that cooperates with the limiting member (21) is provided on the control plate (50). The limiting member (21) includes a first limiting rod (211) and a second limiting rod (212) arranged in parallel. A first through hole (202) for the first limiting rod (211) to slide and a second through hole (203) that cooperates with the second limiting rod (212) are provided on the second suspension plate (20). The first limiting rod (211) is slidably connected to the first guide groove (502), and a jack (504) that cooperates with the second through hole (203) is provided on the control plate (50).

8. The hot working hoisting device for large ring forgings according to claim 7, wherein, The first guiding groove (502) is coaxial with the second hanging plate (20). The length of the first limiting rod (211) is greater than that of the second limiting rod (212). When the second limiting rod (212) is inserted into the jack (504), the control board (50) is locked by the limiting member (21). When the second limiting rod (212) disengages upward from the jack (504), the control board (50) is unlocked by the limiting member (21).

9. The hot working hoisting device for a large ring forging according to claim 1, characterized in that, A second guiding groove (503) is formed on the control board (50), and a third guiding groove (204) for the sliding of the reset member (22) is formed on the second hanging plate (20). The second guiding groove (503) and the third guiding groove (204) are vertically staggered, and the reset member (22) is slidably connected to the second guiding groove (503).

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