A self-locking lifting device and method for heat-treated forgings

Abstract

This invention discloses a lifting device and method for heat-treated forgings with a self-locking function. The device includes a main beam connected to a bearing pipe via a clamping component; a self-locking hook with several first adjustment mechanisms on its wall and several second adjustment mechanisms on the main beam; an adjustment block slidably mounted on the bearing pipe and driven to move by a driving cylinder; a fixed plate fixedly connected to the upper end of the bearing pipe; a first limiting block fixedly connected to the output end of the driving cylinder; and linkage between the adjustment block and the self-locking hook via a tie rod; and auxiliary components. This invention greatly reduces the swaying of the forgings, ensuring the stability and safety of the lifting process. Furthermore, due to its simple structure, maintenance personnel can quickly locate the faulty component in case of a malfunction, eliminating the need for complex testing equipment and specialized technology, thus reducing maintenance difficulty and costs.

Description

Technical Field

[0001] This invention relates to the field of forging hoisting technology, specifically to a hoisting device and method for heat-treated forgings with a self-locking function. Background Technology

[0002] Large ring forgings are often used in some large machinery. When producing large ring forgings, the ring forgings need to be transported to the next process after forging. Firstly, the temperature of the ring forgings is high after forging, and secondly, the weight of the ring forgings is large, so it is not suitable to use manual handling. Usually, special hoisting equipment is used for hoisting.

[0003] However, traditional forging hoisting devices still have the following problems in high-temperature environments for forgings: On the one hand, traditional hoisting devices move forgings by means of equipment such as chains, which are prone to insufficient stability of forgings due to vibration or external forces, and are easy to shake during hoisting, affecting operational safety; on the other hand, some existing forging movement self-locking structures rely on complex mechanical linkages or electrical controls, which are costly and difficult to maintain. Summary of the Invention

[0004] The purpose of this invention is to provide a heat-treated forging hoisting device and method with a self-locking function, in order to solve the following problems mentioned in the background art where traditional forging hoisting devices still have the following problems in the high-temperature environment of forgings: on the one hand, traditional hoisting devices move forgings by means of equipment such as chains, which are prone to insufficient stability of forgings due to vibration or external forces, and are prone to shaking during hoisting, affecting operational safety; on the other hand, some existing forging movement self-locking structures rely on complex mechanical linkages or electrical controls, which are costly and difficult to maintain.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a heat-treated forging hoisting device with a self-locking function, comprising,

[0006] The main beam is connected to a load-bearing pipe via a clamping device;

[0007] The self-locking hook is mounted on the main beam by a limiting member. The wall of the self-locking hook is provided with a number of first adjustment mechanisms, and the main beam is provided with a number of second adjustment mechanisms.

[0008] An adjusting block is slidably mounted on a bearing tube and driven to move by a driving cylinder. A fixed plate is fixedly connected to the upper end of the bearing tube, and the driving cylinder is installed at the lower end of the fixed plate. A first limiting block is fixedly connected to the output end of the driving cylinder. The lower end of the first limiting block is fixedly connected to the adjusting block. The adjusting block and the self-locking hook are linked by a tie rod. The adjusting block slides and drives the self-locking hook to rotate under the limitation of the limiting member through the tie rod.

[0009] And auxiliary components, which are located at one end of the main beam and provide auxiliary support for the forging.

[0010] In a preferred embodiment: the main beam consists of three equally spaced extension beams and a tray. The extension beams are welded to the side wall of the tray. Each of the extension beams has an opening for installing a self-locking hook. The second adjustment mechanism includes a first mounting port on the three extension beams. There are three self-locking hooks, which are matched with the positions of the extension beams. Each self-locking hook is composed of an upper part and a lower part, which are integrally formed. The included angle between the upper part and the lower part is 120-160 degrees.

[0011] In a preferred embodiment: the first adjustment mechanism includes a second mounting port, a third mounting port, a first clamping plate, and a buffer spring. The upper ends of the upper components of the plurality of self-locking hooks are provided with several equally spaced second mounting ports, which are obliquely distributed along the direction of the upper components. The lower components of the plurality of self-locking hooks are provided with several equally spaced third mounting ports, the diameter of which matches that of the first mounting ports. The third mounting ports are vertically distributed along the direction of the lower components. A cavity is provided on the inner wall of the bottom end of the lower component. A first clamping plate is slidably disposed within the cavity. A buffer spring is disposed between one end of the first clamping plate and the inner wall of the cavity. One end of the buffer spring is fixedly connected to the first clamping plate, and the other end is fixedly connected to the inner wall of the cavity.

[0012] In a preferred embodiment: the limiting component includes a limiting post, a second limiting block, a threaded rod, and a sliding assembly. One end of the limiting post passes through a first mounting port and one of the third mounting ports. The second limiting block is fixedly connected to one end of the limiting post. The diameter of the second limiting block is larger than the diameter of the first mounting port. A threaded groove is formed on the wall of the limiting post away from the second limiting block. A threaded rod is threadedly connected in the threaded groove. The sliding assembly is disposed near the end of the threaded rod to support and move the threaded rod.

[0013] In a preferred embodiment: the sliding assembly includes a sliding plate, a groove, and a drive handle. A groove is provided on the end wall of the extension beam near the threaded rod. The sliding plate is slidably connected in the groove. The threaded rod is threadedly connected to the sliding plate. A drive handle is fixedly connected to the upper end of the threaded rod. Anti-slip textures are provided on the side wall of the drive handle.

[0014] In a preferred embodiment: the clamping component includes a first release device, a second release device, a clamping cavity, and gripping hooks. The first release device and the second release device are fixedly connected to the upper outer wall of the tray, respectively. A clamping cavity is formed between the first release device and the second release device. A plurality of gripping hooks distributed at equal intervals are clamped in the clamping cavity. A U-shaped block is fixedly connected to the upper end of the plurality of gripping hooks. A fixing block is fixedly connected to the U-shaped block by a first fastening bolt. Both ends of the first fastening bolt are threaded with a first fastening nut.

[0015] In a preferred embodiment: the tie rod and the adjusting block are connected by a second fastening bolt, and the two ends of the second fastening bolt are threaded with a second fastening nut; the tie rod and the upper component are connected by a third fastening bolt, and the two ends of the third fastening bolt are threaded with a third fastening nut; the adjusting block and the upper component are respectively provided with grooves for installing the third fastening bolt and the second fastening bolt.

[0016] In a preferred embodiment: the auxiliary component includes a second clamping plate for further reinforcement when the forging is lifted and a support block, one end of the plurality of extension beams is fixedly connected to a connecting plate, one side of the connecting plate is fixedly connected to the second clamping plate, and the lower end of the connecting plate is slidably connected to the support block.

[0017] In a preferred embodiment: the support block has an L-shaped structure, and a reinforcing cylinder is fixedly connected to one end of the support block. The output shaft of the reinforcing cylinder is fixedly connected to the connecting plate. A connecting hole is opened at the upper end of the bearing pipe, and the crane is connected to the bearing pipe through the fourth fastening bolt and the connecting hole.

[0018] The method of using a self-locking lifting device for heat-treated forgings is as follows:

[0019] S1. According to the specifications and shape of the forging to be hoisted, the installation position of the self-locking hook on the main beam is adjusted by the second adjustment mechanism. The limiting post is passed through the first installation port and the third installation port. The sliding plate slides in the slide groove, thereby adjusting the threaded rod to the top of the limiting post. Then, the drive handle is rotated to move the threaded rod, thereby fixing the position of the limiting post and thus fixing the self-locking hook.

[0020] S2, the lower ends of multiple grab hooks are inserted into the clamping cavity, and then the U-shaped block is fixed to the fixing block by the first fastening bolt and the first fastening nut, thereby completing the connection and fixation between the bearing pipe and the main beam. The drive cylinder is started, and the drive cylinder drives the adjusting block to slide on the bearing pipe. The adjusting block drives the self-locking hook to rotate through the tie rod, thereby exerting an outward force on the inner wall of the forging. Combined with the inward force of the second clamping plate on the forging, the initial self-locking fixation of the forging is completed. Then the crane lifts the forging. When the forging is off the ground, the reinforcement cylinder is started, so that multiple support blocks exert an upward support force on the forging, further increasing the stability of the forging when it moves.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0022] This invention utilizes a self-locking hook and auxiliary components. During forging hoisting, the adjusting block pulls the tie rod, causing the self-locking hook to rotate. At this time, the lower part of the self-locking hook exerts an outward force on the inner wall of the forging, while the second clamping plate in the auxiliary components applies an inward force to the forging. These two components work together to achieve initial clamping and fixation of the forging. After the forging is lifted off the ground, it pushes the L-shaped support block to move, providing an upward supporting force. Throughout the hoisting process, the self-locking hook and auxiliary components fix and support the forging from multiple directions, effectively counteracting external vibrations and interference, greatly reducing the swaying of the forging, and ensuring the safety of the hoisting process. The stability and safety of the process are achieved through simple mechanical components such as limit posts, threaded rods, and sliding plates to limit and fix the self-locking hook, and through components such as drive cylinders and tie rods to drive the self-locking hook to rotate. Compared with the traditional complex mechanical linkage and electrical control structure, it has fewer components and a simpler structural design. In the actual manufacturing process, these components are easy to process and have low raw material costs, which greatly reduces the manufacturing cost of the equipment. At the same time, due to the simple structure, when a fault occurs later, maintenance personnel can quickly locate the faulty component without the need for complex testing equipment and professional technology, which reduces the difficulty and cost of maintenance, and has high economic efficiency and practicality.

[0023] This invention, through a second adjustment mechanism, allows for the installation of self-locking hooks at different positions on the first mounting opening of the main beam's extension beam. This alters the distribution spacing and angle of the self-locking hooks on the main beam to accommodate the size and shape of the forgings. Simultaneously, in the first adjustment mechanism, the second mounting opening of the upper component of the self-locking hook is obliquely distributed, while the third mounting opening of the lower component is vertically distributed. This allows for adjustment of the contact position and angle between the self-locking hook and the forging according to its specific structure. Furthermore, the first clamping plate and buffer spring within the lower component can adaptively adjust the pressure when clamping the forging, ensuring stable lifting of forgings of different specifications and shapes. This significantly improves the versatility of the lifting device, allowing for adjustments based on forging specifications. The self-locking hook on the main beam can be adjusted and fixed by simply turning the drive handle and sliding the slide plate in the groove to adjust the position of the threaded rod. Then, the bearing pipe is connected to the main beam through the clamping device. Activating the drive cylinder button will cause the adjusting block to rotate the self-locking hook, completing the initial clamping of the forging. After lifting the forging, the reinforcement cylinder button is activated to support and reinforce the forging with the support block. The entire operation process is clear and simple, requiring no complicated training. Operators can quickly master the process, improving work efficiency and reducing the risk of errors caused by complex operation, thus ensuring the safety of manual operation. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall main structure of the hoisting device of the present invention;

[0026] Figure 2 This is a side view of the overall structure of the hoisting device of the present invention;

[0027] Figure 3 This is the present invention. Figure 1 A magnified structural diagram at point A;

[0028] Figure 4 This is a schematic diagram of the connection structure of the second clamping plate, support block, connecting plate and reinforcing cylinder of the present invention.

[0029] Figure 5 This is a schematic diagram of the first adjustment mechanism of the present invention;

[0030] In the diagram: 1. Main beam; 100. Extension beam; 101. Pallet; 2. Bearing pipe; 3. Self-locking hook; 300. Upper component; 301. Lower component; 4. Adjusting block; 5. Drive cylinder; 6. Fixing plate; 7. First limit block; 8. Tie rod; 9. Opening; 10. First mounting port; 11. Second mounting port; 12. Third mounting port; 13. First clamping plate; 14. Buffer spring; 15. Limiting post; 16. Second limit... 17. Position block; 18. Threaded rod; 19. Slide plate; 20. Slide groove; 21. Drive handle; 22. First release hook; 23. Second release hook; 24. Clamping cavity; 25. Grab hook; 26. U-shaped block; 27. First fastening bolt; 28. Second fastening bolt; 29. ​​Third fastening bolt; 30. Groove; 31. Second clamping plate; 32. Support block; 33. Connecting plate; 34. Reinforcing cylinder; 35. Connecting hole; 36. Cavity. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-5 The present invention provides a technical solution: a lifting device for heat-treated forgings with a self-locking function, comprising,

[0033] Main beam 1, with a load-bearing pipe 2 connected to it by a clamping device;

[0034] Self-locking hook 3, self-locking hook 3 is set on main beam 1 by limiting member, self-locking hook 3 is provided with a number of first adjustment mechanisms on the wall and main beam 1 is provided with a number of second adjustment mechanisms;

[0035] Adjusting block 4 is slidably mounted on bearing pipe 2 and driven to move by driving cylinder 5. A fixed plate 6 is fixedly connected to the upper end of bearing pipe 2. Driving cylinder 5 is installed at the lower end of fixed plate 6. A first limiting block 7 is fixedly connected to the output end of driving cylinder 5. The lower end of the first limiting block 7 is fixedly connected to adjusting block 4. Adjusting block 4 and self-locking hook 3 are linked by a tie rod 8. Adjusting block 4 slides through tie rod 8 to drive self-locking hook 3 to rotate under the limitation of the limiting member.

[0036] During actual assembly, the pallet 101 is first placed horizontally, and the three extension beams 100 are welded to the side wall of the pallet 101 at equal intervals to form the basic structure of the main beam 1. An opening 9 for the installation of the self-locking hook 3 and a first installation port 10 are opened at the corresponding positions on the wall of the extension beam 100. The first release hook 21 and the second release hook 22 are fixed to the upper outer wall of the pallet 101, and a locking cavity 23 is formed between them. The grab hook 24 is inserted into the locking cavity 23. The U-shaped block at the upper end of the grab hook 24 is connected to the fixing block through the first fastening bolt 26, and the first fastening nut is tightened to securely connect the bearing tube 2 to the main beam 1. The limiting post 15 is passed sequentially through the first mounting port 10 of the extension beam 100 and the third mounting port 12 of the lower component 301 of the self-locking hook 3. The second limiting block 16 at one end of the limiting post 15 prevents it from coming out. A sliding groove 19 is opened on the wall of the extension beam 100 near the threaded rod 17, and a sliding plate 18 is installed so that the threaded rod 17 is threadedly connected to the sliding plate 18. The drive handle 20 is rotated to move the threaded rod 17 and fix the limiting post 15, thus completing the installation of the self-locking hook 3. A fixing plate 6 is fixedly installed on the upper end of the bearing pipe 2, and the drive cylinder 5 is installed on the lower end of the fixing plate 6. The output end of the drive cylinder 5 is connected to the first limiting block 7, and the first limiting block 7 is fixed to the adjusting block 4. The two ends of the tie rod 8 are connected to the adjusting block 4 and the upper component 300 of the self-locking hook 3 by the second fastening bolt 27 and the third fastening bolt 28, respectively. A connecting plate 32 is fixed at one end of the extension beam 100. A second clamping plate 30 is installed on one side of the connecting plate 32, and an L-shaped support block 31 is slidably connected to the lower end. One end of the support block 31 is connected to a reinforcing cylinder 33, and the output shaft of the reinforcing cylinder 33 is fixed to the connecting plate 32. All components of the entire hoisting device are tightly and stably connected, forming an organic whole. The connection method between the main beam 1 and the bearing pipe 2 ensures the load-bearing foundation of the device. The self-locking hook 3 can be flexibly installed and adjusted. The cooperation between the adjusting block 4 and the drive cylinder 5 realizes automated control. The auxiliary components enhance the all-round support for the forging. The coordinated work of all parts significantly improves the stability and safety of the hoisting device when hoisting high-temperature, high-mass forgings, effectively avoiding safety hazards caused by loose connections and inconvenient control.

[0037] And auxiliary components, which are located at one end of the main beam 1 and provide auxiliary support for the forging.

[0038] The main beam 1 consists of three equally spaced extension beams 100 and a tray 101. The extension beams 100 are welded to the side wall of the tray 101. Each extension beam 100 has an opening 9 on its wall for installing a self-locking hook 3. The second adjustment mechanism includes several equally spaced first mounting openings 10 on the three extension beams 100. There are three self-locking hooks 3, positioned to match the extension beams 100. Each self-locking hook 3 is composed of an upper component 300 and a lower component 301, which are integrally formed. The included angle between 01 and 01 is 120-160 degrees. The three equally spaced extension beams 100 and the three matching self-locking hooks 3 can evenly distribute the lifting force and prevent the forging from tilting or swaying due to uneven force during the lifting process. The design of the opening 9 on the extension beam 100 and the first installation port 10 makes the self-locking hook 3 flexible to install and can be adapted to various specifications of forgings. The included angle between the upper part 300 and the lower part 301 of the self-locking hook 3 can better fit the surface of the forging, enhance the clamping effect, and further improve the lifting stability and reliability to meet the lifting needs under different working conditions.

[0039] The first adjustment mechanism includes a second mounting port 11, a third mounting port 12, a first clamping plate 13, and a buffer spring 14. The upper part 300 of the multiple self-locking hooks 3 is provided with several equally spaced second mounting ports 11, which are obliquely distributed along the direction of the upper part 300. The lower part 301 of the multiple self-locking hooks 3 is provided with several equally spaced third mounting ports 12, the diameter of which matches the diameter of the first mounting ports 10. The third mounting ports 12 are vertically distributed along the direction of the lower part 301. A cavity 35 is provided on the inner wall of the bottom end of the lower part 301, and a first clamping plate 13 is slidably disposed within the cavity 35. One end of the first clamping plate 13 is connected to the cavity 35. Several buffer springs 14 are evenly distributed between the inner walls of cavity 35. One end of the buffer spring 14 is fixedly connected to the first clamping plate 13, and the other end is fixedly connected to the inner wall of cavity 35. The oblique distribution of the second mounting port 11 and the vertical distribution of the third mounting port 12 increase the height adjustment capability of the self-locking hook 3, which can adapt to various complex shapes of forgings and ensure that the self-locking hook 3 is in close contact with the forging. The setting of the first clamping plate 13 and the buffer springs 14 enables the self-locking hook 3 to automatically adjust the clamping force according to the surface shape of the forging when clamping the forging, which not only ensures the clamping effect, but also avoids damage to the surface of the forging due to excessive clamping force, effectively improving the adaptability and protection performance of the lifting device to different forgings.

[0040] The limiting component includes a limiting post 15, a second limiting block 16, a threaded rod 17, and a sliding assembly. One end of the limiting post 15 passes through the first mounting port 10 and one of the third mounting ports 12. The second limiting block 16 is fixedly connected to one end of the limiting post 15. The diameter of the second limiting block 16 is larger than the diameter of the first mounting port 10. A threaded groove is provided on the wall of the end of the limiting post 15 away from the second limiting block 16. The threaded rod 17 is threadedly connected in the threaded groove. The sliding assembly is located near the end of the threaded rod 17 to support and move the threaded rod 17. Through the cooperation of the limiting post 15, the threaded rod 17, and the sliding plate 18, the self-locking hook 3 is kept stable during the hoisting process and will not loosen or shift. This effectively improves the safety and reliability of the hoisting device and reduces the risk of safety accidents caused by the instability of the self-locking hook 3.

[0041] The sliding assembly includes a slide plate 18, a groove 19, and a drive handle 20. A groove 19 is provided on the end wall of the extension beam 100 near the threaded rod 17. The slide plate 18 is slidably connected in the groove 19. The threaded rod 17 is threadedly connected to the slide plate 18. The drive handle 20 is fixedly connected to the upper end of the threaded rod 17. Anti-slip texture is provided on the side wall of the drive handle 20.

[0042] The clamping mechanism includes a first release hook 21, a second release hook 22, a clamping cavity 23, and grab hooks 24. The first release hook 21 and the second release hook 22 are fixedly connected to the upper outer wall of the pallet 101, forming a clamping cavity 23 between them. Several grab hooks 24 are clamped in the clamping cavity 23 and distributed at equal intervals. U-shaped blocks 25 are fixedly connected to the upper ends of the grab hooks 24. The U-shaped blocks 25 are fixedly connected to the fixing blocks by the first fastening bolts 26. Both ends of the first fastening bolts 26 are threaded with first fastening nuts. The clamping mechanism enables a quick and stable connection between the bearing pipe 2 and the main beam 1. The cooperation between the grab hooks 24 and the clamping cavity 23 makes the bearing pipe 2 easy to install and less prone to loosening. The setting of the first fastening bolts 26 and nuts further enhances the reliability of the connection. During the hoisting process, it ensures a stable connection between the bearing pipe 2 and the main beam 1, effectively transmits the hoisting force, and facilitates the disassembly and installation of the bearing pipe 2, improving equipment maintenance efficiency.

[0043] The tie rod 8 and the adjusting block 4 are connected by a second fastening bolt 27. The two ends of the second fastening bolt 27 are threaded with second fastening nuts. The tie rod 8 and the upper component 300 are connected by a third fastening bolt 28. The two ends of the third fastening bolt 28 are threaded with third fastening nuts. The adjusting block 4 and the upper component 300 are respectively provided with grooves 29 for the installation of the third fastening bolt 28 and the second fastening bolt 27.

[0044] The auxiliary components include a second clamping plate 30 and a support block 31 for further reinforcement during lifting of the forging. One end of a plurality of extension beams 100 is fixedly connected to a connecting plate 32, and the second clamping plate 30 is fixedly connected to one side of the connecting plate 32. The support block 31 is slidably connected to the lower end of the connecting plate 32. The auxiliary components provide additional support and fixation for the forging. The second clamping plate 30 clamps the forging from the side, and the support block 31 supports the forging from below. The two work together to form a three-dimensional reinforcement structure for the forging. During the lifting process, it effectively prevents the forging from shaking or tilting, greatly improving the stability and safety of the forging lifting. It is especially suitable for lifting large and irregularly shaped forgings.

[0045] The support block 31 has an L-shaped structure, and a reinforcing cylinder 33 is fixedly connected to one end of the support block 31. The output shaft of the reinforcing cylinder 33 is fixedly connected to the connecting plate 32. A connecting hole 34 is opened at the upper end of the bearing pipe 2. The crane is connected to the bearing pipe 2 through the fourth fastening bolt and the connecting hole 34. The structure of the L-shaped support block 31 can better fit the bottom contour of the forging and provide stable support force. The setting of the reinforcing cylinder 33 realizes the automatic adjustment of the position of the support block 31. The position of the support block 31 can be quickly adjusted according to the lifting requirements of the forging. The connection between the bearing pipe 2 and the crane is simple and reliable, ensuring the effective transmission of force during the lifting process. The cooperation of the three further enhances the stable support of the lifting device for the forging and ensures the safety and stability of the forging during the lifting process.

[0046] The method of using a self-locking lifting device for heat-treated forgings is as follows:

[0047] S1. According to the specifications and shape of the forging to be hoisted, the installation position of the self-locking hook 3 on the main beam 1 is adjusted by the second adjustment mechanism. The limiting post 15 is passed through the first installation port 10 and the third installation port 12, and slides in the slide groove 19 through the sliding plate 18, thereby adjusting the threaded rod 17 to above the limiting post 15. Then, the drive handle 20 is rotated to move the threaded rod 17, thereby fixing the position of the limiting post 15 and thus limiting and fixing the self-locking hook 3.

[0048] S2, the lower ends of multiple grab hooks 24 are inserted into the clamping cavity 23, and then the U-shaped block 25 is fixed to the fixing block by the first fastening bolt 26 and the first fastening nut, thereby completing the connection and fixation between the bearing pipe 2 and the main beam 1. The drive cylinder 5 is started, and the drive cylinder 5 drives the adjusting block 4 to slide on the bearing pipe 2. The adjusting block 4 drives the self-locking hook 3 to rotate through the tie rod 8, thereby exerting an outward force on the inner wall of the forging. Combined with the inward force of the second clamping plate 30 on the forging, the initial self-locking fixation of the forging is completed. Then the crane lifts the forging. When the forging is off the ground, the reinforcement cylinder 33 is started, so that multiple support blocks 31 exert an upward support force on the forging, further increasing the stability of the forging when it moves.

[0049] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lifting device for heat-treated forgings with a self-locking function, characterized in that: include, Main beam (1), the main beam (1) is connected to a bearing pipe (2) by a clamping device; The self-locking hook (3) is mounted on the main beam (1) by a limiting member. The wall of the self-locking hook (3) is provided with a number of first adjustment mechanisms. The first adjustment mechanism includes a second mounting port (11), a third mounting port (12), a first clamping plate (13), and a buffer spring (14). The main beam (1) is provided with a number of second adjustment mechanisms. Adjusting block (4), the adjusting block (4) is slidably disposed on the bearing pipe (2) and driven to move by the driving cylinder (5). The upper end of the bearing pipe (2) is fixedly connected to the fixing plate (6). The driving cylinder (5) is installed at the lower end of the fixing plate (6). The output end of the driving cylinder (5) is fixedly connected to the first limiting block (7). The lower end of the first limiting block (7) is fixedly connected to the adjusting block (4). The adjusting block (4) and the self-locking hook (3) are linked by the provided tie rod (8). The adjusting block (4) slides through the tie rod (8) to drive the self-locking hook (3) to rotate under the limitation of the limiting component. The limiting component includes a limiting post (15), a second limiting block (16), a threaded rod (17) and a sliding assembly. And auxiliary components, which are located at one end of the main beam (1) and provide auxiliary support for the forging. The auxiliary components include a second clamping plate (30) for further reinforcement when the forging is lifted and a support block (31). One end of a plurality of extension beams (100) is fixedly connected to a connecting plate (32). The second clamping plate (30) is fixedly connected to one side of the connecting plate (32), and the support block (31) is slidably connected to the lower end of the connecting plate (32).

2. The heat-treated forging hoisting device with self-locking function according to claim 1, characterized in that: The main beam (1) consists of three equally spaced extension beams (100) and a tray (101). The extension beams (100) are welded to the side wall of the tray (101). The walls of the multiple extension beams (100) are provided with openings (9) for the installation of self-locking hooks (3). The second adjustment mechanism includes a first mounting port (10) opened on the three extension beams (100). There are three self-locking hooks (3), which are matched with the positions of the extension beams (100). The self-locking hooks (3) are composed of an upper part (300) and a lower part (301). The upper part (300) and the lower part (301) are integrally formed, and the included angle between the upper part (300) and the lower part (301) is 120-160 degrees.

3. A heat-treated forging hoisting device with self-locking function according to claim 2, characterized in that: The upper part (300) of the multiple self-locking hooks (3) is provided with several second mounting ports (11) distributed at equal distances. The multiple second mounting ports (11) are distributed obliquely along the direction of the upper part (300). The lower part (301) of the multiple self-locking hooks (3) is provided with several third mounting ports (12) distributed at equal distances. The diameter of the third mounting port (12) matches that of the first mounting port (10). The multiple third mounting ports (12) are distributed vertically along the direction of the lower part (301). The inner wall of the bottom end of the lower part (301) is provided with a cavity (35). A first clamping plate (13) is slidably provided in the cavity (35). A buffer spring (14) is provided between one end of the first clamping plate (13) and the inner wall of the cavity (35). One end of the buffer spring (14) is fixedly connected to the first clamping plate (13), and the other end is fixedly connected to the inner wall of the cavity (35).

4. A heat-treated forging hoisting device with self-locking function according to claim 3, characterized in that: One end of the limiting post (15) passes through the first mounting port (10) and one of the third mounting ports (12). A second limiting block (16) is fixedly connected to one end of the limiting post (15). The diameter of the second limiting block (16) is larger than the diameter of the first mounting port (10). A threaded groove is provided on the wall of the end of the limiting post (15) away from the second limiting block (16). A threaded rod (17) is threadedly connected in the threaded groove. The sliding component is located at the end close to the threaded rod (17) to support and move the threaded rod (17).

5. A heat-treated forging hoisting device with self-locking function according to claim 4, characterized in that: The sliding assembly includes a sliding plate (18), a sliding groove (19), and a drive handle (20). The extension beam (100) has a sliding groove (19) on one end wall near the threaded rod (17). The sliding plate (18) is slidably connected in the sliding groove (19). The threaded rod (17) is threadedly connected to the sliding plate (18). The drive handle (20) is fixedly connected to the upper end of the threaded rod (17). Anti-slip textures are provided on the side wall of the drive handle (20).

6. A heat-treated forging hoisting device with self-locking function according to claim 5, characterized in that: The clamping component includes a first release device (21), a second release device (22), a clamping cavity (23), and a grabbing hook (24). The first release device (21) and the second release device (22) are fixedly connected to the upper outer wall of the tray (101). A clamping cavity (23) is formed between the first release device (21) and the second release device (22). A number of grabbing hooks (24) distributed at equal distances are clamped in the clamping cavity (23). A U-shaped block (25) is fixedly connected to the upper end of the multiple grabbing hooks (24). A fixing block is fixedly connected to the U-shaped block (25) by a first fastening bolt (26). Both ends of the first fastening bolt (26) are threaded with a first fastening nut.

7. A heat-treated forging hoisting device with self-locking function according to claim 6, characterized in that: The tie rod (8) and the adjusting block (4) are connected by a second fastening bolt (27), and the two ends of the second fastening bolt (27) are threaded with a second fastening nut. The tie rod (8) and the upper component (300) are connected by a third fastening bolt (28), and the two ends of the third fastening bolt (28) are threaded with a third fastening nut. The adjusting block (4) and the upper component (300) are respectively provided with grooves (29) for the installation of the third fastening bolt (28) and the second fastening bolt (27).

8. A heat-treated forging hoisting device with self-locking function according to claim 7, characterized in that: The structure of the support block (31) is L-shaped, and a reinforcing cylinder (33) is fixedly connected to one end of the support block (31). The output shaft of the reinforcing cylinder (33) is fixedly connected to the connecting plate (32). A connecting hole (34) is opened at the upper end of the bearing pipe (2). The crane is connected to the bearing pipe (2) through the fourth fastening bolt and the connecting hole (34).

9. The method of using the self-locking lifting device for heat-treated forgings according to claim 8, characterized in that: The details are as follows: S1. According to the specifications and shape of the forging to be hoisted, the installation position of the self-locking hook (3) on the main beam (1) is adjusted by the second adjustment mechanism. The limiting post (15) is passed through the first installation port (10) and the third installation port (12). The sliding plate (18) slides in the groove (19) to adjust the threaded rod (17) to the top of the limiting post (15). Then, the drive handle (20) is rotated to drive the threaded rod (17) to move, thereby fixing the position of the limiting post (15) and thus fixing the self-locking hook (3). S2, the lower ends of multiple hooks (24) are inserted into the clamping cavity (23), and then the U-shaped block (25) is fixed to the fixing block by the first fastening bolt (26) and the first fastening nut, thereby completing the connection and fixing of the bearing pipe (2) and the main beam (1). The drive cylinder (5) is started, and the drive cylinder (5) drives the adjusting block (4) to slide on the bearing pipe (2). The adjusting block (4) drives the self-locking hook (3) to rotate through the tie rod (8), thereby exerting an outward force on the inner wall of the forging. Combined with the inward force of the second clamping plate (30) on the forging, the initial self-locking fixing of the forging is completed. Then the crane lifts the forging. When the forging leaves the ground, the reinforcement cylinder (33) is started, so that multiple support blocks (31) exert an upward support force on the forging, further increasing the stability of the forging when it moves.

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