A self-locking lifting device for large ring components

Abstract

The present invention relates to the field of hoists, and specifically to a self-locking hoisting device for large ring components, comprising: a load-bearing circular table; a plurality of locking clamp mechanisms are evenly installed on the load-bearing circular table, and the plurality of locking clamp mechanisms can slide radially along the load-bearing circular table, and the locking clamp mechanism includes a clamping bracket, and a support portion that supports the bottom of the ring component is hingedly installed on the clamping bracket, and a supporting portion that rests against the outer ring surface of the ring component is installed on one side of the supporting portion; a centering locking mechanism that drives the plurality of locking clamp mechanisms to slide synchronously, and the centering locking mechanism is transmission-connected to the locking clamp mechanism. The present invention locks the outer ring surface of the ring component through the supporting portion of the locking clamp mechanism, and the support portion supports the bottom of the ring component, thereby achieving clamping and fixation of the ring component, reducing damage to the ring component during hoisting, and improving the versatility of the device.

Description

Technical Field

[0001] The present invention relates to the field of slings, and in particular to a self-locking slinging device for a large ring component. Background Art

[0002] Ring components, as seamless rings, are key components in wind turbines. Further processing on their basis can produce wind turbine sliding yaw slewing bearing gears and wind turbine blade pitch slewing gears. Due to the large size of ring components, hoisting during production is inconvenient. Existing ring component hoisting functions are limited. For example, Chinese patent number "CN108820851B" proposes a circular ring workpiece handling fixture that primarily uses the inner core of the central cylinder to secure the ring component around its inner wall. However, some ring components have high quality requirements for their center holes, and hoisting from the outside of the ring hole can easily damage the center hole. Chinese patent number "CN103183282B" proposes a hoisting tool for large ring components that primarily utilizes three balancing rods, three movable booms, and three iron chains to position, clamp, and hoist the ring components. Relying solely on three balancing rods to position large ring components presents a limited level of safety. Furthermore, the tool fails to address how to eliminate the overall device's oscillation during hoisting. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a self-locking lifting device for a large ring member to solve the problem that the existing lifting tools easily cause damage to the inner hole of the ring member and have low safety.

[0004] Based on the above objectives, the present invention provides a self-locking lifting device for a large ring member, comprising:

[0005] Load-bearing round table;

[0006] A plurality of locking clamp mechanisms, each of which is evenly distributed on the bearing truncated platform and can slide radially along the bearing truncated platform, the locking clamp mechanism comprising a clamping bracket, a support portion that supports the bottom of the ring member is hingedly mounted on the clamping bracket, and an abutment portion that abuts against the outer annular surface of the ring member is mounted on one side of the support portion;

[0007] A centering locking mechanism is connected to the locking fixture mechanism in a transmission manner, driving the plurality of locking fixture mechanisms to slide synchronously;

[0008] Among them, the centering locking mechanism drives multiple clamping brackets to slide synchronously toward the middle of the supporting table, the abutment part abuts and fixes the outer ring surface of the ring component, and the abutment part drives the support part to flip and approach the bottom of the supporting ring component to support the bottom of the ring component.

[0009] Optionally, a connecting rod mechanism is installed between the supporting portion and the abutting portion, the upper end of the connecting rod mechanism is hinged to the upper end of the abutting portion, and a reset elastic member is installed between the abutting portion and the clamping bracket.

[0010] Optionally, a buffer elastic member is installed between the abutting portion and the connecting rod mechanism.

[0011] Optionally, the centering locking mechanism includes a driving bracket, which is rotatably mounted on the supporting circular platform, a driving motor is mounted on the supporting circular platform, a driving wheel is mounted on the output end of the driving motor, the driving wheel is transmission-connected to the driving bracket, a driving connecting rod is hinged on the driving bracket, and the driving connecting rod is connected to the locking clamp mechanism.

[0012] Optionally, the supporting truncated table is provided with a plurality of infrared position sensors along its radial direction for locating the position of the ring component.

[0013] Optionally, a radial locking assembly is further installed on the supporting circular platform, and the radial locking assembly is provided with a plurality of engaging parts along its length direction. When the abutting part supports the bottom of the ring component, the upper part of the abutting part engages with the engaging part.

[0014] Optionally, a linkage mechanism is installed on the upper part of the abutment part, a locking buckle is provided on the linkage mechanism, and a locking slot is provided on the upper part of the abutment part. When the abutment part supports the bottom of the ring component, the lower end of the locking buckle is engaged in the locking slot, and the upper end of the locking buckle is engaged with the engaging part.

[0015] Optionally, it also includes a translation and lifting mechanism that drives the supporting circular platform to rise and fall and translate.

[0016] Beneficial effects of the present invention: The present invention locks the outer ring surface of the ring member through the abutting portion of the locking clamp mechanism, and the supporting portion supports the bottom of the ring member, thereby clamping and fixing the ring member, reducing damage to the ring member during lifting, and improving the versatility of the device;

[0017] The centering locking mechanism drives the synchronous movement of the locking fixture mechanism, which improves the centering accuracy of the ring component and the lifting device and reduces the tilting of the ring component during the lifting process;

[0018] The radial locking assembly locks the radial movement of the locking clamp mechanism, reducing shaking during the lifting process and further improving the safety and stability of the lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of a self-locking lifting device for a large ring member according to an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a large ring member self-locking lifting device clamping a ring member according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of a locking clamp mechanism according to an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of a locking clamp mechanism clamping a ring member according to an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the connection between the centering locking mechanism and the locking clamp mechanism according to an embodiment of the present invention Figure 1 ;

[0025] Figure 6 Schematic diagram of the connection between the centering locking mechanism and the locking clamp mechanism according to an embodiment of the present invention Figure 2 ;

[0026] Figure 7 This is a schematic diagram of the connection between the locking clamp mechanism and the radial locking assembly according to an embodiment of the present invention;

[0027] Figure 8 Schematic diagram of a translation and lifting mechanism according to an embodiment of the present invention;

[0028] The markings in the figure are: 1. Load-bearing table; 2. Clamping bracket; 3. Support part; 4. Abutment part; 5. Sliding groove; 6. Vertical section; 7. Straight section; 8. Reset elastic member; 9. Connecting rod mechanism; 10. Buffering elastic member; 11. Driving bracket; 12. Driving motor; 13. Driving wheel; 14. Driving connecting rod; 15. Upper cover; 16. Towing hole; 17. Infrared position sensor; 18. Engaging part; 19. Vertical plate; 20. Slide groove; 21. First connecting rod; 22. Second connecting rod; 23. Locking buckle; 24. Locking slot; 25. Slide rail bracket; 26. Slide rail pulley; 27. Lifting roller; 28. Lifting cable; 29. Hydraulic rod. Implementation Method

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0030] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] In one or more embodiments of the present invention, a large ring member self-locking lifting device is provided, such as Figure 1 、 Figure 2 and Figure 3 As shown, it includes: a load-bearing circular platform 1; a plurality of locking clamp mechanisms are evenly installed on the load-bearing circular platform 1, and the plurality of locking clamp mechanisms can slide along the radial direction of the load-bearing circular platform 1, and the locking clamp mechanism includes a clamping bracket 2, and a support portion 3 for supporting the bottom of the ring member is hingedly installed on the clamping bracket 2, and a supporting portion 4 for abutting against the outer annular surface of the ring member is installed on one side of the support portion 3; a centering locking mechanism that drives the plurality of locking clamp mechanisms to slide synchronously, and the centering locking mechanism is transmission-connected to the locking clamp mechanism;

[0032] During operation, the centering locking mechanism drives multiple clamping brackets 2 to slide synchronously toward the middle of the supporting table 1, and the abutting portion 4 first contacts the outer ring surface of the ring component to abut and fix the outer ring surface of the ring component. The centering locking mechanism further drives the clamping bracket 2 to slide, and the abutting portion 4 drives the supporting portion 3 to flip and approach the bottom of the supporting ring component until the bottom of the ring component is supported. The present invention locks the outer ring surface of the ring component by the abutting portion 4 of the locking clamp mechanism, and the supporting portion 3 supports the bottom of the ring component, thereby clamping and fixing the ring component, reducing damage to the ring component during lifting.

[0033] In one embodiment, Figure 3 、 Figure 4As shown, the supporting table 1 is provided with a sliding groove 5 along its radial direction, the clamping bracket 2 can be slidably installed in the sliding groove 5, the abutting portion 4 is flat, the supporting portion 3 has a vertical section 6 and a straight section 7, the vertical section 6 of the supporting portion 3 is hinged to the clamping bracket 2, and a reset elastic member 8 is installed between the vertical section 6 and the clamping bracket 2. A reset spring is used in this application, and a connecting rod mechanism 9 is installed between the straight section 7 and the abutting portion 4. The connecting rod mechanism 9 and the straight section 7 of the abutting portion 4 form a parallelogram connecting rod mechanism 9. When the abutting portion 4 moves, it drives the parallelogram connecting rod mechanism 9 to move, and the parallelogram connecting rod mechanism 9 drives the supporting portion 3 to rotate, so that the straight section 7 of the support portion 3 rotates to a relatively straight state.

[0034] In one embodiment, Figure 3 As shown, a buffer elastic member 10 is installed between the abutting portion 4 and the connecting rod mechanism 9. The buffer elastic member 10 can be a buffer spring, a rubber pad or other elastic material. The buffer elastic member 10 plays a buffering role to ensure the stability of the clamping process.

[0035] In one embodiment, Figure 3 、 Figure 5 、 Figure 6 As shown, the centering locking mechanism includes a driving bracket 11, which is rotatably mounted on the supporting table 1, and a driving motor 12 is installed on the supporting table 1. A driving wheel 13 is installed at the output end of the driving motor 12, and the driving wheel 13 is connected to the driving bracket 11 through a transmission. To ensure the stability of the transmission, a gear transmission method is adopted in this embodiment, that is, the driving wheel 13 is a gear, and a bevel gear is provided on the lower surface of the outer edge of the driving bracket 11. The driving wheel 13 is meshed with the bevel gear for transmission connection, and a driving connecting rod 14 is hinged on the driving bracket 11, and the driving connecting rod 14 is connected to the locking clamp mechanism. Specifically, an upper cover plate 15 is provided on the clamping bracket 2, and a traction hole 16 is opened on the upper cover plate 15. One end of the driving connecting rod 14 is hinged to the traction hole 16. When the driving motor 12 drives the driving wheel 13 to rotate, the driving wheel 13 drives the driving bracket 11 to rotate, and the driving bracket 11 drives the locking clamp mechanism to slide along the radial direction of the supporting table 1 through the driving connecting rod 14.

[0036] In one embodiment, Figure 5 As shown, the supporting truncated table 1 is radially mounted with a plurality of infrared position sensors 17 for locating the position of the ring member. The infrared position sensors 17 locate the position of the ring member, thereby improving the automation level of the lifting device and reducing the difficulty of centering the ring member during the clamping process.

[0037] In one embodiment, Figure 3 、 Figure 7As shown, the supporting truncated platform 1 is also equipped with a radial locking assembly having a plurality of engaging portions 18 along its length. When the abutting portion 4 supports the bottom of the ring member, the upper portion of the abutting portion 4 engages with the engaging portions 18. The engaging portions 18 engage with the upper portion of the abutting portion 4 to lock the radial movement of the locking fixture mechanism, thereby reducing the shaking of the ring member during hoisting and improving the stability of the ring member during hoisting.

[0038] In one embodiment, a linkage mechanism is installed on the upper part of the abutting portion 4, and a vertical plate 19 is provided on the upper part of the clamping bracket 2. A slide groove 20 is provided on the vertical plate 19. The linkage mechanism includes a first link 21 and a second link 22. One end of the first link 21 is hinged to the upper end of the abutting portion 4, and the other end of the first link 21 is hinged to the second link 22. A sliding shaft is provided at the hinge of the first link 21 and the second link 22, and the sliding shaft is slidably installed in the slide groove 20. A locking buckle 23 is provided at one end of the second link 22 away from the first link 21. A locking slot 24 is provided on the upper part of the abutting portion 4, and the locking buckle 23 is located between the locking portion 18 and the locking slot 24. When the abutting portion 4 supports the bottom of the ring member, the lower end of the locking buckle 23 is engaged in the locking slot 24, and the upper end of the locking buckle 23 is engaged with the engaging portion 18.

[0039] Optional, such as Figure 8 As shown, it also includes a translation and lifting mechanism that drives the supporting circular platform 1 to rise, fall and translate. In this embodiment, the translational lifting mechanism includes a slide rail bracket 25, and multiple slide rail pulleys 26 are installed on both sides of the slide rail bracket 25. The slide rail pulleys 26 are rotatably installed on the slide rails of the lifting device. A lifting motor and other driving mechanisms that drive the slide rail pulleys 26 to rotate are also installed on the slide rail bracket 25. Multiple lifting rollers 27 are installed on the slide rail bracket 25, and a lifting cable 28 is wrapped around the lifting roller 27. A winch mechanism is also installed on one side of the lifting roller 27. Multiple lifting rollers 27 are also installed on the supporting circular platform 1. One end of the lifting cable 28 is wrapped around the lifting roller 27 on the supporting circular platform 1. A hydraulic rod 29 is also installed between the slide rail bracket 25 and the supporting circular platform 1. The hydraulic rod 29 is used to limit the lifting height of the lifting device. When the lifting device is lifted to the upper limit position, the limiter automatically cuts off the power supply and the driving mechanism stops working to prevent the lifting cable 28 from continuing to rise and breaking the lifting cable 28, causing a falling accident.

[0040] When in use, the translation and lifting mechanism moves the lifting device to the top of the ring component to be lifted, and locates the position of the ring component through the infrared position sensor 17, and the translation and lifting mechanism moves the lifting device downward, and the driving motor 12 drives the driving wheel 13 to rotate, and the driving wheel 13 drives the driving bracket 11 to rotate, and the driving bracket 11 drives multiple clamping brackets 2 to slide synchronously toward the middle of the supporting circular table 1 through the driving connecting rod 14, and the abutting portion 4 first contacts the outer ring surface of the ring component to abut and fix the outer ring surface of the ring component, and the centering locking mechanism further drives the clamping bracket 2 to slide, and the abutting portion 4 drives the supporting portion 3 to flip and approach the bottom of the supporting ring component until the bottom of the ring component is supported. At the same time, the lower end of the locking buckle 23 is engaged in the locking slot 24, and the upper end of the locking buckle 23 is engaged with the engaging portion 18, locking the radial movement of the locking clamp mechanism;

[0041] When the ring member needs to be released, the driving motor 12 rotates in the reverse direction, the abutting portion 4 gradually moves away from the ring member, and the supporting portion 3 returns to its original position under the pull of the reset elastic member 8, while the locking buckle 23 disengages from the engaging portion 18 and the locking slot 24;

[0042] The present invention locks the outer ring surface of the ring member by the abutting portion 4 of the locking clamp mechanism, and the supporting portion 3 supports the bottom of the ring member, thereby clamping and fixing the ring member, reducing damage to the ring member during lifting, and improving the versatility of the device.

[0043] The centering locking mechanism drives the synchronous movement of the locking fixture mechanism, which improves the centering accuracy of the ring component and the lifting device and reduces the tilting of the ring component during the lifting process;

[0044] The radial locking assembly locks the radial movement of the locking clamp mechanism, reducing shaking during the lifting process and further improving the safety and stability of the lifting.

[0045] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0046] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A self-locking lifting device for large ring components, characterized in that: include: Load-bearing round table (1); A plurality of locking clamp mechanisms, wherein the plurality of locking clamp mechanisms are evenly distributed and mounted on the bearing truncated platform (1) and can slide radially along the bearing truncated platform (1), the locking clamp mechanisms comprising a clamping bracket (2), a support portion (3) for supporting the bottom of the ring member being hingedly mounted on the clamping bracket (2), and a supporting portion (4) for abutting against the outer annular surface of the ring member being mounted on one side of the supporting portion (3); A centering locking mechanism is connected to the locking fixture mechanism in a transmission manner, driving the plurality of locking fixture mechanisms to slide synchronously; The centering locking mechanism drives the plurality of clamping brackets (2) to slide synchronously toward the middle of the supporting truncated table (1), the abutting portion (4) abuts and fixes the outer ring surface of the ring component, and the abutting portion (4) drives the supporting portion (3) to flip and approach the bottom of the supporting ring component, thereby supporting the bottom of the ring component; A connecting rod mechanism (9) is installed between the supporting portion (3) and the abutting portion (4), the upper end of the connecting rod mechanism (9) is hinged to the upper end of the abutting portion (4), and a reset elastic member (8) is installed between the abutting portion (4) and the clamping bracket (2); The centering locking mechanism comprises a driving bracket (11), the driving bracket (11) is rotatably mounted on the supporting truncated platform (1), a driving motor (12) is mounted on the supporting truncated platform (1), a driving wheel (13) is mounted on the output end of the driving motor (12), the driving wheel (13) is in transmission connection with the driving bracket (11), a driving connecting rod (14) is hinged on the driving bracket (11), and the driving connecting rod (14) is connected to the locking clamp mechanism; A radial locking assembly is also mounted on the bearing truncated table (1), and a plurality of engaging portions (18) are provided along the length direction of the radial locking assembly. When the abutting portion (4) supports the bottom of the ring component, the upper portion of the abutting portion (4) engages with the engaging portion (18). The upper part of the abutting part (4) is provided with a linkage mechanism, the upper part of the clamping bracket (2) is provided with a vertical plate (19), the vertical plate (19) is provided with a slide groove (20), the linkage mechanism includes a first connecting rod (21) and a second connecting rod (22), one end of the first connecting rod (21) is hinged to the upper end of the abutting part (4), the other end of the first connecting rod (21) is hinged to the second connecting rod (22), and a sliding shaft is provided at the hinge of the first connecting rod (21) and the second connecting rod (22), and the sliding shaft can slide. The second connecting rod (22) is movably installed in the slide groove (20), and a locking buckle (23) is provided at one end away from the first connecting rod (21). The upper part of the abutting part (4) is provided with a locking slot (24). The locking buckle (23) is located between the engaging part (18) and the locking slot (24). When the abutting part (4) supports the bottom of the ring component, the lower end of the locking buckle (23) is engaged in the locking slot (24), and the upper end of the locking buckle (23) is engaged with the engaging part (18).

2. The large ring member self-locking lifting device according to claim 1, characterized in that: A buffer elastic member (10) is installed between the abutting portion (4) and the connecting rod mechanism (9).

3. The large ring member self-locking lifting device according to claim 1, characterized in that: The supporting truncated platform (1) is provided with a plurality of infrared position sensors (17) along its radial direction for positioning the position of the ring component.

4. The large ring member self-locking lifting device according to claim 1, characterized in that: It also includes a translation lifting mechanism for driving the supporting circular platform (1) to lift and translate.

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