Wind power plant unit impeller hoisting device

Abstract

The invention discloses a hoisting device for an impeller of a wind power plant unit. The hoisting device comprises a connecting assembly used for being installed on a hub. The inserting block is matched with the connecting assembly; platform parts are arranged on the two sides of the inserting block, the tops of the platform parts are slidably connected with push plates, and the push plates abut against the connecting assemblies. According to the wind power plant unit impeller hoisting device, a locking structure is released through linkage movement of a screw mechanism, a driving pressing strip, a connecting rod set and a push plate which can be controlled through a hand disc in a hub, hoisting tool unloading can be completed without leaving a hub bin in the whole process, the high-altitude operation frequency and strength are fundamentally reduced, the safety guarantee level is greatly improved, and the working efficiency is improved. After hoisting operation is completed, through cooperation of a first sealing plate, a second sealing plate, a sliding plate, a sealing rubber strip and a sealing piece, full-closed protection on an outlet of a mounting groove is formed, dust, rainwater, salt mist and other external impurities are effectively prevented from entering the unit, and therefore the problems of component corrosion, electrical faults and the like caused by dust accumulation or moisture erosion are avoided; and the operation stability and the service life of the whole machine are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of unit impeller hoisting, and in particular to a wind farm unit impeller hoisting device. Background Art

[0002] With the rapid development of the wind power industry, the installed capacity of wind turbines continues to rise. As one of the core components, the impeller is generally hoisted in two ways: as a whole rotor (pocket hoist, pedestal hoist) or as a separate rotor (single blade hoist). Currently, when using the pedestal hoist, the industry generally uses a dedicated hoist to fix the hub with bolts, and then complete the hoisting with lifting equipment.

[0003] However, this traditional method has obvious disadvantages: on the one hand, the sling needs to be disassembled manually in a high-altitude working environment, and the sling needs to be free of stress during disassembly. Then the workers need to remove the bolts inside the hub compartment and the nuts outside at the same time. The operation is cumbersome and there are great safety hazards. On the other hand, the bolts need to be removed in two steps. The first time, all the bolts are loosened halfway, then half of the bolts are removed, and then the fixing pins are inserted before removing the remaining bolts.

[0004] Since some bolts need to be removed from the outside of the hub, personnel need to wear protective equipment when walking on the hub surface. In the case of complex wind conditions at high altitudes, the safety of construction personnel and equipment may be in danger. Summary of the Invention

[0005] In view of the above-mentioned problems existing in the existing wind farm unit impeller hoisting device, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a wind farm unit impeller lifting device, the purpose of which is to achieve automatic release and safe disassembly through operations in the hub compartment after the impeller installation is completed, thereby solving the problem of complex and high-risk process of high-altitude unloading of lifting equipment.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a connecting assembly for mounting on a wheel hub; and

[0008] an insert block cooperating with the connecting assembly;

[0009] There are platform parts on both sides of the insert block, and a push plate is slidably connected to the top of the platform part, and the push plate is in contact with the connecting component.

[0010] As a preferred solution of the wind farm unit impeller lifting device described in the present invention, the connecting assembly includes a left locking block and a right locking block, and a first inclined surface is provided on the opposite side of the left locking block and the right locking block. The bottom of the first inclined surface is connected to the second inclined surface through an arc transition, and a rounded corner is provided between the second inclined surface and the bottom surface.

[0011] As a preferred scheme of the wind farm unit impeller hoisting device, the sliding groove is internally provided in the plug, the pressing strip is slidably connected in the sliding groove, the two ends of the pressing strip are provided with link sets, the first link and the second link are coaxially arranged at one end, and the other end is rotatably connected with the push plate.

[0012] As a preferred scheme of the wind farm unit impeller hoisting device, the bottom of the plug is provided with a screw rod penetrating through, the screw rod is threadedly connected with the plug, one end of the screw rod is rotatably connected with the pressing strip, and the other end of the screw rod is provided with a hand disc.

[0013] As a preferred scheme of the wind farm unit impeller hoisting device, the connecting assembly further comprises a base internally provided with a mounting groove penetrating through the base, the top of the mounting groove is provided with a guide surface around, the left locking block and the right locking block are rotatably connected to the top of the mounting groove, and the left locking block and the right locking block are provided with springs between the two side walls of the mounting groove.

[0014] As a preferred scheme of the wind farm unit impeller hoisting device, the first sealing plate is rotatably connected to the top of the left locking block, and the second sealing plate is rotatably connected to the top of the right locking block.

[0015] As a preferred scheme of the wind farm unit impeller hoisting device, the movable end of the first sealing plate and the second sealing plate is clamped with a sealing rubber strip.

[0016] As a preferred scheme of the wind farm unit impeller hoisting device, the first sealing plate is slidably connected with a sliding plate in the inside, and the second sealing plate is provided with a connecting groove in the inside.

[0017] As a preferred scheme of the wind farm unit impeller hoisting device, a sealing sheet is attached to the inner wall of the base.

[0018] As a preferred scheme of the wind farm unit impeller hoisting device, one end of the plug is rotatably connected with a connecting rod, and one end of the connecting rod is rotatably connected with a balance rod.

[0019] The beneficial effects of the present application are that the screw rod mechanism controlled by the hand disc in the hub can drive the pressing strip, the link set and the push plate to move in linkage, release the locking structure, complete the hoist unloading without leaving the hub chamber, fundamentally reduce the frequency and intensity of high-altitude operation, and greatly improve the safety guarantee level.

[0020] When the hoisting operation is completed, the first sealing plate, the second sealing plate, the sliding plate and the sealing rubber strip and the sealing sheet are matched to form full-closed protection for the outlet of the installation groove, effectively preventing dust, rain, salt mist and other external impurities from entering the internal unit, thereby avoiding problems such as component rusting, electrical failure and the like caused by dust accumulation or water vapor corrosion, and improving the operation stability and service life of the whole machine. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 A perspective structural schematic diagram of the balance bar and the wheel hub is shown;

[0023] Figure 2 A perspective structural schematic diagram of the lock block is shown;

[0024] Figure 3 A perspective structural schematic diagram of the connecting assembly is shown;

[0025] Figure 4 A side cross-sectional schematic diagram of the connecting assembly is shown;

[0026] Figure 5 A cross-sectional structural schematic diagram of the left lock block and the right lock block is shown;

[0027] Figure 6 A cross-sectional structural schematic diagram of the connecting assembly is shown;

[0028] Figure 7 A perspective structural schematic diagram of the pressing strip and the push plate is shown;

[0029] Figure 8 A half cross-sectional structural schematic diagram of the base is shown;

[0030] Figure 9 An exploded structural schematic diagram of the left lock block is shown;

[0031] Figure 10 An exploded structural schematic diagram of the right lock block is shown. DETAILED DESCRIPTION

[0032] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below in conjunction with specific embodiments and drawings.

[0033] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions regarding the present application, but the terms can be changed according to the intention of those of ordinary skill in the art, precedents, or new technology in the art. Also, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as simple names, but based on the meaning of the terms and the general description of the present application.

[0034] Embodiment 1, Reference Figures 1-10 , as a first embodiment of the present application, a wind farm unit impeller hoisting device is provided, the device comprises a connecting assembly 200 for mounting on the hub, the connecting assembly 200 comprises a left locking block 201 and a right locking block 202, the opposite side of the left locking block 201 and the right locking block 202 is provided with a first inclined surface 200a, the bottom of the first inclined surface 200a is connected with a second inclined surface 200b through a circular arc, a round corner 200c is arranged between the second inclined surface 200b and the bottom surface, the connecting assembly 200 further comprises a base 203, the inside of the base 203 is provided with a mounting groove 203a penetrating through the base 203, the top of the mounting groove 203a is provided with a guide surface 203b around, the left locking block 201 and the right locking block 202 are respectively rotationally connected to the top of both sides of the mounting groove 203a, and the left locking block 201 and the right locking block 202 and the two side walls of the mounting groove 203a are provided with springs 204; and,

[0035] The plug block 300 matched with the connecting assembly 200, the inside of the plug block 300 is provided with a sliding groove 300a, the sliding groove 300a is slidably connected with a pressing strip 302, the both ends of the pressing strip 302 are provided with a connecting rod group 303, the connecting rod group 303 comprises a plurality of first connecting rods 3031 and second connecting rods 3032, one end of the first connecting rod 3031 and the second connecting rod 3032 is coaxially arranged, and the other end is respectively rotationally connected with the symmetrically arranged push plate 100;

[0036] Among them, the both sides of the plug block 300 have platform parts 301, and the top of the platform part 301 is slidably connected with the push plate 100, the push plate 100 abuts with the connecting assembly 200, the bottom of the plug block 300 is provided with a screw rod 304 penetrating through, and the screw rod 304 is threadedly connected with the plug block 300, one end of the screw rod 304 is rotationally connected with the pressing strip 302, and the other end of the screw rod 304 is provided with a hand disc 305;

[0037] One end of the plug block 300 is rotationally connected with a connecting rod 306, one end of the connecting rod 306 is rotationally connected with a balance rod 307.

[0038] During use, during installation, first guide the insertion block 300 to align the installation slot 203a, insert into the inside of the installation slot 203a through the guide surface 203b, during the insertion process, the two inclined surfaces on the bottom end of the insertion block 300 can be in contact with the first inclined surface 200a on the left locking block 201 and the right locking block 202, as the insertion block 300 advances downward, the left locking block 201 and the right locking block 202 rotate to the two sides to open, the rotation axes of the left locking block 201 and the right locking block 202 are arranged on the two sides of the top of the installation slot 203a, and are connected with the two side walls of the base 203 through the springs 204, which can give way under external force and reset after the external force is removed;

[0039] Continue to push the insertion block 300 downward until the platform part 301 of the insertion block 300 completely enters the installation slot 203a, at this time, the left locking block 201 and the right locking block 202 automatically rebound and clamp due to the pushing of the springs 204, the top surfaces of the left locking block 201 and the right locking block 202 are in contact with the top surface of the installation slot 203a, and the bottom surfaces are in contact with the top surface of the platform part 301 during lifting, so that the lifting force can be reliably transmitted to the hub through the left locking block 201 and the right locking block 202;

[0040] There is a gap between the two sides of the insertion block 300 and the wall surface of the installation slot 203a, during lifting, the gravity of the hub itself can realize gravity locking, ensuring reliable contact of the insertion block 300, the left locking block 201 and the right locking block 202, and during pulling out, there is a gap between the two sides of the insertion block 300 and the wall surface of the installation slot 203a, which can leave enough pulling-out space to prevent jamming;

[0041] Then pull the insertion block 300 upward to lift the hub and install it on the high-altitude motor compartment;

[0042] During disassembly, the operator first holds the hand disc 305 at the bottom of the insertion block 300 and rotates it manually, thereby rotating the threaded rod 304 connected with it by threads, and since the threaded rod 304 is connected with one end of the pressing strip 302 by rotation, this rotation process will guide the pressing strip 302 to gradually move downward in the sliding groove 300a;

[0043] The two ends of the pressing strip 302 are connected with the left and right push plates 100 through the linkage set 303, the linkage set 303 includes a plurality of first linkages 3031 and second linkages 3032, the first linkages 3031 and the second linkages 3032 are coaxially arranged at one end, and are rotatably connected to the symmetrically arranged push plates 100 at the other end, as the pressing strip 302 is pressed downward, the linkage set 303 cooperates to drive the push plates 100 to slide horizontally along the insertion block 300, wherein the lengths of the first linkages 3031 and the second linkages 3032 need to be able to push one end of the push plate 100 to a position flush with the edge of the insertion block 300 when the push plate 100 is turned from an inclined state to a horizontal state, to ensure that there is no jamming during the subsequent pulling-out process;

[0044] Because the included angle between the first inclined surface 200a and the second inclined surface 200b exists, the transition position has an outward convex state to form a transition arc, the sliding direction of the push plate 100 is the transition arc between the first inclined surface 200a and the second inclined surface 200b of the left locking block 201 and the right locking block 202, when the push plate 100 is pushed outward, the horizontal thrust acts on the transition arc, and the shaft centers of the left locking block 201 and the right locking block 202 form a rotation fulcrum, so that the left locking block 201 and the right locking block 202 can rotate around the shaft, and at the same time, the circular corner 200c can reduce the pressure between the contact surfaces during rotation due to the larger contact surface of the circular arc, thereby reducing the friction force, reducing the force required by the worker to rotate, improving the disassembly speed, and more smoothly driving the plug-in block 300 to move downward by a distance, thereby forming a larger gap and reducing the limiting effect on the plug-in block 300;

[0045] At this time, the hoisting equipment such as the crane pulls the traction rope connected to the balance rod 307 to start pulling the balance rod 307 upward, and the balance rod 307 is connected to the plug-in block 300 through the connecting rod 306 rotatably connected at one end, and the traction action moves the plug-in block 300 upward as a whole.

[0046] Because the left locking block 201 and the right locking block 202 have been opened by the push plate 100 and no longer block the movement of the plug-in block 300, the plug-in block 300 smoothly comes out of the installation groove 203a in the base 203 under the traction action, at this time, the plug-in block 300 together with the connecting rod 306 and the balance rod 307 is safely removed from the wind turbine, so that the dismounting of the hoisting system can be realized without dismounting any component, preventing the situation that parts fall and hit the ground, and avoiding the situation that the worker needs to perform external work.

[0047] Embodiment 2, referring to Figure 2 、 Figure 8 、 Figure 9 and Figure 10 , is a second embodiment of the present application, which is different from the first embodiment in that the left locking block 201 is rotatably connected with a first sealing plate 205, and the right locking block 202 is rotatably connected with a second sealing plate 206; the movable end of the first sealing plate 205 and the second sealing plate 206 is clamped with a sealing rubber strip 207, the inside of the first sealing plate 205 is slidably connected with a sliding plate 208, the inside of the second sealing plate 206 is provided with a connecting groove 200d, and the inner wall of the base 203 is attached with a sealing sheet 209.

[0048] Compared with Embodiment 1, after the plug-in block 300 is separated, first, the second sealing plate 206 rotatably connected to the right locking block 202 is rotated to cover the outlet position on the side of the installation groove 203a;

[0049] Then rotate the first sealing plate 205 connected to the left locking block 201, so that it is butted with the second sealing plate 206 at the outlet;

[0050] The operator pulls out the sliding plate 208 and inserts it into the connecting groove 200d arranged in the second sealing plate 206, so that a stable connection is formed between the two sealing plates. After the sliding plate 208 is inserted into the connecting groove 200d, the sliding plate 208 is fixed with the second sealing plate 206 by using bolts, so that the entire sealing assembly is stable;

[0051] The movable ends of the first sealing plate 205 and the second sealing plate 206 are provided with sealing rubber strips 207, so that the sealing between the first sealing plate 205 and the second sealing plate 206 is realized when they are closed. At the same time, the two sides of the first sealing plate 205 and the second sealing plate 206 and the sealing sheet 209 are tightly attached, so that the sealing of the two sides is realized, preventing rainwater, dust or foreign matters from entering, and ensuring the safe operation and maintenance of the subsequent equipment.

[0052] The rest of the structure is the same as that of Example 1.

[0053] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various exemplary embodiments are by way of illustration only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily understand that many modifications can be made (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such variations are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be changed or re-sequenced without departing from the scope of the application. In the claims, any "means plus function" clause is intended to cover the structures described herein as performing the recited functionality, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described, but extends to various modifications that still fall within the scope of the appended claims.

[0054] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual implementation can not be described (i.e., those unrelated to the best mode of practicing the present application currently contemplated).

[0055] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A wind farm unit impeller hoisting device, characterized by: comprising a connection assembly (200) for mounting on a wheel hub; and, an insert block (300) that cooperates with the connecting assembly (200); Wherein, both sides of the insert block (300) are provided with platform parts (301), and the top of the platform part (301) is slidably connected with a push plate (100), and the push plate (100) is in contact with the connecting component (200).

2. The wind farm turbine impeller hoisting device according to claim 1, characterized in that: The connecting assembly (200) comprises a left locking block (201) and a right locking block (202), wherein a first inclined surface (200a) is provided on opposite sides of the left locking block (201) and the right locking block (202), the bottom of the first inclined surface (200a) is connected to a second inclined surface (200b) via an arc transition, and a rounded corner (200c) is provided between the second inclined surface (200b) and the bottom surface.

3. The wind farm unit impeller hoisting device according to claim 2, characterized in that: A sliding groove (300a) is provided inside the insert block (300), and a pressure strip (302) is slidably connected inside the sliding groove (300a). Both ends of the pressure strip (302) are provided with a connecting rod group (303), and the connecting rod group (303) includes a plurality of first connecting rods (3031) and second connecting rods (3032). One end of the first connecting rod (3031) and the second connecting rod (3032) are coaxially arranged, and the other end is respectively rotatably connected to the symmetrically arranged push plate (100).

4. The wind farm turbine impeller hoisting device according to claim 2 or 3, characterized in that: A screw rod (304) is provided through the bottom of the insert block (300), and the screw rod (304) and the insert block (300) are threadedly connected. One end of the screw rod (304) is rotatably connected to the pressure strip (302), and the other end of the screw rod (304) is provided with a hand plate (305).

5. The wind farm turbine impeller hoisting device according to claim 4, characterized in that: The connecting assembly (200) further comprises a base (203), an interior of which is provided with a mounting groove (203a) penetrating the base (203), a top of the mounting groove (203a) is provided with guide surfaces (203b) around the periphery, the left locking block (201) and the right locking block (202) are respectively rotatably connected to the top two sides of the mounting groove (203a), and a spring (204) is provided between the left locking block (201), the right locking block (202) and the two side walls of the mounting groove (203a).

6. The wind farm unit impeller hoisting device according to claim 5, characterized in that: The upper rotation of the left locking block (201) is connected to a first sealing plate (205), and the upper rotation of the right locking block (202) is connected to a second sealing plate (206).

7. The wind farm turbine impeller hoisting device according to claim 6, characterized in that: The movable ends of the first sealing plate (205) and the second sealing plate (206) are both clamped with sealing strips (207).

8. The wind farm turbine impeller hoisting device according to claim 7, characterized in that: The interior of the first sealing plate (205) is slidably connected to a slide plate (208), and the interior of the second sealing plate (206) is provided with a connecting groove (200d).

9. The wind farm turbine impeller hoisting device according to claim 8, characterized in that: A sealing sheet (209) is attached to the inner wall of the base (203).

10. The wind farm turbine impeller hoisting device according to claim 9, characterized in that: One end of the insert block (300) is rotatably connected to a connecting rod (306), and one end of the connecting rod (306) is rotatably connected to a balancing rod (307).

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