Steel structure support for bearing loam core shell of hub of large fan

Abstract

The invention relates to a steel structure support for bearing a loam core shell of a hub of a large fan. The steel structure support comprises a first steel frame. The rear end of the first steel frame is attached to the rear end of the second steel frame, and loam core shells are installed in the first steel frame and the second steel frame in an embedded mode. According to the steel structure support for bearing the loam core shell of the large fan hub, by arranging the positioning and locking mechanism, when the first steel frame and the second steel frame are hoisted and spliced, the first steel frame and the second steel frame are guided through a guide cylinder, and the guide cylinder can be embedded into the rear end of the second steel frame in the translation approaching process of the first steel frame and the second steel frame; the first steel frame and the second steel frame are firstly positioned and spliced, the traditional mode that when the first steel frame and the second steel frame are directly hoisted and spliced, guiding and positioning can be conducted is changed, and the first steel frame and the second steel frame can be quickly spliced together; and when the staircase is not used, the staircase can be vertically placed, so that the occupied position of the staircase is reduced, and the steel structure bracket is convenient to move and transport.

Description

Technical Field

[0001] The invention relates to the technical field of casting, and in particular to a steel structure bracket, in particular to a steel structure bracket for carrying a mud core shell of a large wind turbine hub. Background Art

[0002] With the rise of offshore wind power in recent years, the demand for large-capacity wind turbines has become more and more urgent. Hub and base castings are key components of wind turbines. The hub and base have very large dimensions, generally about 5 to 7 meters, and complex structures. They are basically made by casting. Among them, the mold for making the hub and base generally includes the outermost steel structure, mold and mud core.

[0003] For example, a document with publication number CN219852012U discloses a steel structure support for carrying a mud core shell of a large wind turbine hub. The utility model includes a first steel frame and a second steel frame, which reduces the volume of the entire steel structure support and facilitates its transportation. In addition, the lifting direction of the first steel frame and the second steel frame is consistent with the extension direction of the splicing surface of the two, thereby avoiding twisting of the steel structure support, and further avoiding deformation of the mud core shell embedded in the steel structure support, thereby improving the quality of the product.

[0004] However, when splicing the first steel frame and the second steel frame, although the first steel frame and the second steel frame are hoisted and spliced, due to the lack of a positioning structure between the two steel frames, and since the connection holes and grooves of the first steel frame and the second steel frame are not consistent, it is necessary to constantly adjust the first steel frame and the second steel frame, which affects the efficiency of assembly, and stairs are added to the steel frame. Although it is convenient for climbing, the stairs occupy a large space. When not in use, it affects the overall occupied area of ​​the bracket and is inconvenient for transportation. Summary of the invention

[0005] Technical issues solved In order to solve the above technical problems, the present invention provides a steel structure support for carrying a large wind turbine hub mud core shell.

[0006] (II) Technical solution Based on this, the present invention provides the following technical solution: a steel structure support for carrying a large wind turbine hub mud core shell, comprising a steel frame 1; The rear ends of the steel frame 1 and the steel frame 2 are fitted together, a mud core shell is embedded and installed inside the steel frame 1 and the steel frame 2, a positioning groove is provided at the top rear end of the mud core shell, and a positioning locking mechanism is provided at the connection between the steel frame 1 and the steel frame 2; The positioning and locking mechanism includes a receiving groove one, a receiving groove two, a positioning rod, a guide cylinder, a compression spring, a top block, an expansion cylinder, a nut, and a folding mechanism. The right end of the steel frame two is provided with a receiving groove one, the right end of the steel frame one is provided with a receiving groove two, the left end of the receiving groove two is embedded with a guide cylinder, the interior of the guide cylinder is embedded with an expansion cylinder, the positioning rod is plugged into the interior of the expansion cylinder, the positioning rod passes through the middle part of the compression spring, and the left end of the compression spring is fixed to the positioning rod, the positioning rod is matched with the inner thread of the nut, and the right end of the receiving groove two is provided with a folding mechanism.

[0007] Preferably, the positioning rod is plugged into the interior of the top block, and the cross-section of the top block is truncated cone-shaped. The top block is embedded in the expansion cylinder to support the expansion cylinder from the outside, so that the expansion cylinder and the guide cylinder fit tightly to achieve rapid positioning.

[0008] Preferably, the center lines of the positioning rod, guide cylinder, compression spring, top block, expansion cylinder and nut are in the same horizontal direction, and the surface of the expansion cylinder is circumferentially distributed with linear grooves to facilitate the positioning rod, guide cylinder, compression spring, top block and expansion cylinder to be embedded in the inner side of the guide cylinder.

[0009] Preferably, a threaded rod is provided at the top of the positioning rod, and the threaded rod cooperates with the inner thread of the nut. The top cross-section of the positioning rod is a truncated cone structure, and a guide protrusion is provided at the top of the positioning rod. A sealing ring is embedded and installed on the top of the positioning rod to achieve the sealing between the positioning rod and the rear end wall of the receiving groove to prevent the positioning rod from loosening.

[0010] Preferably, the folding mechanism includes a guide rail, a slider, a staircase, a support seat, and a positioning mechanism. The left end of the guide rail is bolted to the second receiving groove, the guide rail is slidably matched with the left end of the slider, the slider is hinged to the top of the staircase, the staircase is hinged to the top of the support seat, and the rear end of the positioning mechanism is fixed to the second receiving groove.

[0011] Preferably, two groups of guide rails are provided, and sliders are provided at the right ends of the guide rails. The sliders are distributed at the front and rear sides of the top of the stairs. The stairs are driven to slide by the sliders, thereby folding the stairs.

[0012] Preferably, the positioning mechanism includes a base, movable block one, a connecting seat, a limit block, a connecting rod, movable block two, a limit rod, and a torsion spring. The rear end of the base is fixed to the receiving groove two, the base is rotatably connected to the middle part of the movable block one, a connecting seat is fixed to the top of the movable block one, the movable block one adopts a connecting rod to cooperate with the front end of the movable block two in transmission, the movable block two is movably connected to the inside of the base, and the limit rod is installed in the middle of the inside of the base.

[0013] Preferably, limiting blocks are relatively fixed on the front and rear sides of the left end of the connecting seat.

[0014] Preferably, the structure of the movable block one is consistent with the structure of the movable block two, and the movable block one and the movable block two are arranged parallel to each other, the bottoms of the movable block one and the movable block two are flat, a torsion spring is arranged on the inner side of the movable block one, and the movable block one is elastically connected with the limit rod by the torsion spring, and the torsion spring is limited by the limit rod. When the movable block one drives the torsion spring to rotate, the torsion spring is deformed due to the limiting action of the limit rod. When the rotating force of the movable block one is removed, the movable block one is driven to return to its original position by the elastic potential energy of restoring the deformation through the torsion spring.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a steel structure support for carrying a large fan hub mud core shell, which has the following beneficial effects: The steel structure support for carrying the mud core shell of a large wind turbine hub is provided with a positioning and locking mechanism. When the steel frame 1 and the steel frame 2 are hoisted and spliced, the steel frame 1 and the steel frame 2 are guided by a guide tube. When the steel frame 1 and the steel frame 2 are translated and approached, the guide tube will be embedded in the rear end of the steel frame 2, so that the steel frame 1 and the steel frame 2 are first positioned and spliced, changing the traditional method of directly hoisting and splicing the steel frame 1 and the steel frame 2. Guide positioning can be performed, so that the steel frame 1 and the steel frame 2 can be quickly spliced ​​together; and when the stairs are not in use, the stairs can be placed vertically, thereby reducing the space occupied by them, and facilitating the movement and transportation of the steel structure support. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the positioning and locking mechanism of the present invention; Figure 3 It is a schematic diagram of the partial internal structure of the positioning and locking mechanism of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the expansion cylinder of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the positioning rod of the present invention; Figure 6 This is a schematic diagram of the internal structure of the guide cylinder of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the folding mechanism of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the positioning mechanism of the present invention; Fig. 9 It is a schematic diagram of the planar structure of the positioning mechanism of the present invention; Fig.10 It is a partial front view structural schematic diagram of the positioning mechanism of the present invention.

[0017] In the figure: steel frame 1, steel frame 2, mud core shell 3, positioning groove 4, positioning locking mechanism 5, receiving groove 1 51, receiving groove 2 52, positioning rod 53, guide cylinder 54, compression spring 55, top block 56, expansion cylinder 57, nut 58, folding mechanism 59, threaded rod 531, guide protrusion 532, sealing ring 533, guide rail 591, slider 592, staircase 593, support seat 594, positioning mechanism 595, base 5951, movable block 1 5952, connecting seat 5953, limit block 5954, connecting rod 5955, movable block 2 5956, limit rod 5957, torsion spring 5958. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 A steel structure support for carrying a large wind turbine hub mud core shell, comprising a steel frame 1; the steel frame 1 is fitted with the rear ends of a steel frame 2, a mud core shell 3 is embedded and installed inside the steel frame 1 and the steel frame 2, a positioning groove 4 is provided at the top rear end of the mud core shell 3, and a positioning locking mechanism 5 is provided at the connection between the steel frame 1 and the steel frame 2.

[0020] In some embodiments, the present application provides a steel structure support for carrying a large wind turbine hub mud core shell, which is divided into a steel frame 1 and a steel frame 2, thereby reducing the volume of the entire steel structure support and facilitating its transportation. In addition, the lifting direction of the steel frame 1 and the steel frame 2 is consistent with the demolding direction of the product and the extension direction of the splicing surface of the two, thereby avoiding the distortion of the steel structure support, and then avoiding the deformation of the mud core shell 3 embedded in the steel structure support, thereby improving the quality of the product. Pads can be added at the bottom of the steel frame 1 and the steel frame 2 to ensure the stability of the bottom of the entire steel structure support. This is not drawn in the figure and is not limited here.

[0021] See also Figure 2-Figure 6A steel structure support for carrying a large fan hub mud core shell, the positioning locking mechanism 5 includes a receiving groove 1 51, a receiving groove 2 52, a positioning rod 53, a guide cylinder 54, a compression spring 55, a top block 56, an expansion cylinder 57, a nut 58, and a folding mechanism 59. The right end of the steel frame 2 is provided with a receiving groove 1 51, the right end of the steel frame 1 is provided with a receiving groove 2 52, the left end of the receiving groove 2 52 is embedded with a guide cylinder 54, the inside of the guide cylinder 54 is embedded with an expansion cylinder 57, the positioning rod 53 is plugged into the inside of the expansion cylinder 57, the positioning rod 53 runs through the middle of the compression spring 55, and the left end of the compression spring 55 is fixed to the positioning rod 53, the positioning rod 53 and the inner part of the nut 58 are fixed to each other. The side thread is matched, and a folding mechanism 59 is provided at the right end of the receiving groove 52. The positioning rod 53 is plugged into the inside of the top block 56, and the cross-section of the top block 56 is truncated cone-shaped. The top block 56 is embedded in the expansion cylinder 57, and the expansion cylinder 57 is supported to the outside, so that the expansion cylinder 57 and the guide cylinder 54 are tightly fitted to achieve rapid positioning. The center lines of the positioning rod 53, guide cylinder 54, compression spring 55, top block 56, expansion cylinder 57, and nut 58 are in the same horizontal direction, and the surface of the expansion cylinder 57 is circumferentially distributed with linear grooves, which is convenient for the positioning rod 53, guide cylinder 54, compression spring 55, top block 56, and expansion cylinder 57 to be embedded in the inner side of the guide cylinder 54.

[0022] In some embodiments, a threaded rod 531 is provided at the top of the positioning rod 53, and the threaded rod 531 cooperates with the inner thread of the nut 58. The top cross-section of the positioning rod 53 is a truncated cone structure, and a guide protrusion 532 is provided at the top of the positioning rod 53. A sealing ring 533 is embedded and installed at the top of the positioning rod 53. When the steel frame 1 and the steel frame 2 are hoisted and spliced, the steel frame 1 and the steel frame 2 are guided by the guide cylinder 54. The guide cylinder 54 will be embedded in the rear end of the steel frame 2 during the translation process of the steel frame 1 and the steel frame 2, so as to realize the first positioning and splicing of the steel frame 1 and the steel frame 2, and then the expansion cylinder 57 is embedded in the guide cylinder 54, and then the pressure cylinder 57 is pressed. The spring 55 is sleeved on the positioning rod 53, and the positioning rod 53 is embedded in the guide tube 54 from the front to the back from the front end of the receiving groove 1 51, and then the top block 56 is sleeved on the threaded rod 531 of the positioning rod 53, and then the nut 58 is locked. As the nut 58 is screwed in, the top block 56 is driven to move to the inside of the expansion tube 57, and the expansion tube 57 is supported outward with the guide protrusion 532, so that the expansion tube 57 and the guide tube 54 are tightly fitted, and the splicing and locking of the steel frame 1 and the steel frame 2 can be realized, which changes the traditional method of directly lifting and splicing the steel frame 1 and the steel frame 2, and can perform guided positioning, so that the steel frame 1 and the steel frame 2 can be quickly spliced ​​together.

[0023] See also Figure 7-10A steel structure support for carrying a large fan hub mud core shell, the folding mechanism 59 includes a guide rail 591, a slider 592, a staircase 593, a support seat 594, and a positioning mechanism 595. The left end of the guide rail 591 is bolted to the receiving groove 2 52, the guide rail 591 and the left end of the slider 592 are slidably matched, the slider 592 is hinged to the top of the staircase 593, the staircase 593 is hinged to the top of the support seat 594, the rear end of the positioning mechanism 595 is fixed to the receiving groove 2 52, and the guide rail 591 is provided with two sets of , and the right end of the guide rail 591 is provided with a slider 592, which is distributed on the front and rear sides of the top of the stair 593. The slider 592 drives the stair 593 to slide, so that the stair 593 is folded. The positioning mechanism 595 includes a base 5951, a movable block 1 5952, a connecting seat 5953, a limit block 5954, a connecting rod 5955, a movable block 2 5956, a limit rod 5957, and a torsion spring 5958. The rear end of the base 5951 is fixed to the receiving groove 2 52, and the base 5 951 is rotatably connected with the middle part of the movable block 1 5952, a connecting seat 5953 is fixed on the top of the movable block 1 5952, the movable block 1 5952 adopts a connecting rod 5955 to cooperate with the front end of the movable block 2 5956, the movable block 2 5956 is movably connected with the inside of the base 5951, the limit rod 5957 is installed in the middle of the inside of the base 5951, and the limit block 5954 is relatively fixed on the front and rear sides of the left end of the connecting seat 5953. When the staircase 593 needs to be used, the connecting seat 5953 is moved upward. 953, so that the connection seat 5953 drives the limit block 5954 to swing synchronously, so that the limit block 5954 releases the positioning of the stair 593, and then pulls the stair 593 downward to rotate and tilt on the slider 592, and at the same time drives the slider 592 to slide toward the lower end of the guide rail 591, so that the stair 593 is tilted and placed, so that the operator can climb and observe the situation in the mud core shell 3. At the same time, the support seat 594 is supported against the ground to support the stair 593. Figure 2 shown.

[0024] In some embodiments, the positioning mechanism 595 can also be provided with two groups, which are respectively provided at the front and rear ends of the bottom of the stair 593, which is not limited here. The stair 593 is a ladder installed at an inclined angle to the horizontal plane. When not in use, the stair 593 can be placed vertically to reduce the space it occupies, which is convenient for moving and transporting the steel structure support. After the stair 593 is set vertically, the upward push force on the connecting seat 5953 can be released. The initial state of the connecting seat 5953 is as follows: Fig. 9 As shown; The torsion spring 5958 drives the movable block 1 5952 to return to its original position through the elastic potential energy of restoring deformation. At this time, the limit block 5954 is arranged horizontally to limit the rear end support rod of the stair 593. At the same time, one end of the movable block 1 5952 is also supported by the rear end support rod of the stair 593 to achieve the positioning of the stair 593, and the movable block 5952 drives the movable block 2 5956 to swing synchronously through the connecting rod 5955 to assist in positioning the stair 593 and prevent the stair 593 from shaking or tilting when not in use. The structure of the movable block 1 5952 is consistent with the structure of the movable block 2 5956, and the movable block 1 5952 and the movable block 2 5956 are arranged parallel to each other. The bottoms of the movable blocks 1 5952 and 2 5956 are flat. A torsion spring 5958 is arranged on the inner side of the movable block 1 5952. The torsion spring 5958 is an ordinary torsion spring 5958, which is a spiral spring. The ends of the torsion spring are fixed to other components. When the other components rotate around the center of the spring, the spring pulls them back to the initial position, generating torque or rotational force, and the movable block 5952 is elastically connected to the limiting rod 5957 by a torsion spring 5958, and the torsion spring 5958 is limited by the limiting rod 5957. When the movable block 5952 drives the torsion spring 5958 to rotate, the torsion spring 5958 is deformed due to the limiting action of the limiting rod 5957. When the rotational force of the movable block 5952 is removed, the movable block 5952 is driven to return to its original position by the elastic potential energy of restoring the deformation by the torsion spring 5958.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel structure support for carrying a large fan hub mud core shell, characterized in that: Includes one (1) steel frame; The rear ends of the steel frame 1 (1) and the steel frame 2 (2) are fitted together, a mud core shell (3) is embedded and installed inside the steel frame 1 (1) and the steel frame 2 (2), a positioning groove (4) is provided at the top rear end of the mud core shell (3), and a positioning locking mechanism (5) is provided at the connection between the steel frame 1 (1) and the steel frame 2 (2); The positioning locking mechanism (5) comprises a receiving groove 1 (51), a receiving groove 2 (52), a positioning rod (53), a guide cylinder (54), a compression spring (55), a top block (56), an expansion cylinder (57), a nut (58), and a folding mechanism (59). The right end of the second steel frame (2) is provided with a receiving groove 1 (51), the right end of the first steel frame (1) is provided with a receiving groove 2 (52), the left end of the receiving groove 2 (52) is embedded with a guide cylinder (54), the interior of the guide cylinder (54) is embedded with an expansion cylinder (57), the positioning rod (53) is plugged into the interior of the expansion cylinder (57), the positioning rod (53) passes through the middle of the compression spring (55), and the left end of the compression spring (55) is fixed to the positioning rod (53), the positioning rod (53) is threadedly matched with the inner side of the nut (58), and the right end of the receiving groove 2 (52) is provided with a folding mechanism (59).

2. A steel structure support for carrying a large fan hub mud core shell according to claim 1, characterized in that: The positioning rod (53) is plugged into the interior of the top block (56), and the cross section of the top block (56) is in the shape of a truncated cone.

3. A steel structure support for carrying a large fan hub mud core shell according to claim 1, characterized in that: The center lines of the positioning rod (53), the guide cylinder (54), the compression spring (55), the top block (56), the expansion cylinder (57), and the nut (58) are in the same horizontal direction, and the surface of the expansion cylinder (57) is circumferentially provided with linear grooves.

4. A steel structure support for carrying a large wind turbine hub mud core shell according to claim 1, characterized in that: A threaded rod (531) is provided at the top of the positioning rod (53), and the threaded rod (531) cooperates with the inner thread of the nut (58). The cross section of the top of the positioning rod (53) is a truncated cone structure, and a guide protrusion (532) is provided at the top of the positioning rod (53). A sealing ring (533) is embedded and installed at the top of the positioning rod (53).

5. The steel structure support for carrying a large wind turbine hub mud core shell according to claim 1, characterized in that: The folding mechanism (59) comprises a guide rail (591), a slider (592), a staircase (593), a support seat (594), and a positioning mechanism (595); the left end of the guide rail (591) is bolted to the second receiving groove (52); the guide rail (591) and the left end of the slider (592) are slidably matched; the slider (592) is hinged to the top of the staircase (593); the staircase (593) and the top of the support seat (594) are hinged; and the rear end of the positioning mechanism (595) is fixed to the second receiving groove (52).

6. A steel structure support for carrying a large wind turbine hub mud core shell according to claim 5, characterized in that: Two groups of guide rails (591) are provided in total, and a slider (592) is provided at the right end of each guide rail (591). The sliders (592) are distributed at the front and rear sides of the top of the staircase (593).

7. The steel structure support for carrying a large fan hub mud core shell according to claim 5, characterized in that: The positioning mechanism (595) comprises a base (5951), a movable block 1 (5952), a connecting seat (5953), a limiting block (5954), a connecting rod (5955), a movable block 2 (5956), a limiting rod (5957), and a torsion spring (5958). The rear end of the base (5951) is fixed to the receiving groove 2 (52). The base (5951) is rotatably connected to the middle of the movable block 1 (5952). The connecting seat (5953) is fixed to the top of the movable block 1 (5952). The movable block 1 (5952) adopts a connecting rod (5955) to drive and cooperate with the front end of the movable block 2 (5956). The movable block 2 (5956) is movably connected to the inside of the base (5951). The limiting rod (5957) is installed in the middle of the inside of the base (5951).

8. The steel structure support for carrying a large fan hub mud core shell according to claim 7, characterized in that: The front and rear sides of the left end of the connecting seat (5953) are relatively fixed with limiting blocks (5954).

9. The steel structure support for carrying a large wind turbine hub mud core shell according to claim 7, characterized in that: The structure of the movable block 1 (5952) is consistent with the structure of the movable block 2 (5956), and the movable block 1 (5952) and the movable block 2 (5956) are arranged parallel to each other, and the bottoms of the movable block 1 (5952) and the movable block 2 (5956) are flat.

10. The steel structure support for carrying a large fan hub mud core shell according to claim 7, characterized in that: A torsion spring (5958) is provided on the inner side of the movable block 1 (5952), and the movable block 1 (5952) is elastically connected to the limiting rod (5957) by means of the torsion spring (5958).

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