Wind turbine impeller locking disc

Abstract

The invention discloses a wind turbine impeller locking disk, comprising a shaft, a generator and a housing, characterized in that the bottom end of the shaft is fixedly connected to the top of the generator, the top of the generator is fixedly connected to the bottom end of the connecting rod, the top of the connecting rod is fixedly connected to the bottom end of the chassis, the chassis is fixedly connected to the inner wall of the housing, a circular hole is installed in the middle of the chassis, a bearing is installed between the inner wall of the circular hole and the shaft, a rotation spring is installed in the middle of the shaft, the bottom end of the rotation spring is fixedly connected to the top of the chassis, the top of the rotation spring is fixedly connected to the bottom end of the disk, the disk is located in the middle of the bottom end of the rotating disk, the disk is movably connected to the rotating disk, the bottom end of the disk is fixedly connected to one end of the lock buckle, a stopper is installed at the top of the rotating disk, the stopper is threadedly connected to the shaft, and the top of the shaft is fixedly connected to the bottom end of the fixed block. The invention has a simple structure, is provided with a blade return device, and is convenient for fixing the pin and the slot.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine generators, and in particular to a wind turbine generator impeller locking disk. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. A wind turbine generally consists of a wind rotor, a generator (including a device), a stabiliser (tail wing), a tower, a speed limit safety mechanism and an energy storage device. The working principle of a wind turbine is relatively simple. The wind rotor rotates under the action of wind force, and it converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates and generates electricity driven by the wind rotor shaft. Broadly speaking, wind energy is also solar energy, so it can also be said that a wind turbine is a heat energy generator that uses the sun as a heat source and the atmosphere as a working medium.

[0003] The impeller locking device of a wind turbine is used to temporarily lock the rotor when personnel enter the hub or repair the rotating parts to prevent the rotating parts from causing mechanical damage to the human body. With the development of large-scale wind turbines, from the earliest wind turbines of several hundred kilowatts to the 4-8 megawatt wind turbines that have appeared at home and abroad in recent years, the rotor diameter has become larger and larger, and the weight of the rotating part has become heavier, reaching more than 100 tons. When a single blade is installed, the bending moment generated by the weight of the blade will exceed the bearing limit of the impeller locking device. Therefore, for the impeller locking of large wind turbines, the requirements for the impeller locking device are getting higher and higher. A single impeller locking device often cannot meet the requirements for impeller locking. Therefore, the current impeller locking device often uses multiple locking pins to lock the rotor together.

[0004] Due to machining errors, even if multiple pins are used, only a few pins can bear most of the locking torque. Even if the locking holes are matched, only the matched pins can be improved, and all pins cannot be loaded evenly. Therefore, how to make multiple locking pins evenly distribute the shear load from the impeller rotor is a key issue for the future large-scale wind turbine generator to achieve horizontal single-blade installation. Summary of the invention

[0005] The object of the present invention is to provide a wind turbine impeller locking disk to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wind turbine impeller locking plate, comprising a shaft, a generator and a housing, characterized in that the bottom end of the shaft is fixedly connected to the top of the generator, the top of the generator is fixedly connected to the bottom end of the connecting rod around the top, the top of the connecting rod is fixedly connected to the bottom end of the chassis around the chassis and the inner wall of the housing is fixedly connected, a circular hole is installed in the middle part of the chassis, a bearing is installed between the inner wall of the circular hole and the shaft, a rotary spring is installed in the middle part of the shaft, the bottom end of the rotary spring is fixedly connected to the top of the chassis, the top of the rotary spring is fixedly connected to the circular hole, and the bearing is installed between the inner wall of the circular hole and the shaft. The bottom end of the disk is fixedly connected, and the disk is located in the middle of the bottom end of the turntable, the disk is movably connected to the turntable, and the bottom end of the disk is fixedly connected to one end of the lock buckle on all sides, the shaft rod is movably connected to the turntable, and a stop block is installed on the top of the turntable, and the stop block is threadedly connected to the shaft rod, and the top end of the shaft rod is fixedly connected to the bottom end of the fixed block, and the fixed block is fixedly connected to one end of the fan blade at equal distances on all sides, the bottom end of the turntable is movably connected to the top end of the cylinder, the bottom end of the cylinder is fixedly connected to the top end of the chassis, and the top end of the chassis is fixedly connected to the bottom end of the pneumatic rod at equal distances, and the pneumatic rods are fixedly connected to fixed rings respectively.

[0007] Furthermore, a groove is provided on the inner wall of the bottom end of the turntable, and the groove is engaged and connected with the other end of the lock buckle.

[0008] Furthermore, the shaft is movably connected to the middle portion of the disc.

[0009] Furthermore, the generator is electrically connected to an external transmission line.

[0010] Furthermore, a convex ring is provided at the top end of the cylinder, and the convex ring is slidably connected to the bottom end of the turntable.

[0011] Furthermore, a slide groove is provided on the inner wall of the shell, and the slide groove is movably connected to the periphery of the turntable.

[0012] Furthermore, the top ends of the gas pressure rods are respectively provided with latches, and the latches and the slots are engaged with each other.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention can play a good role in weakening torque and returning to the center through a strong return spring when the wind turbine needs to stop rotating, helping the pin on the pneumatic rod to align with the slot hole, fixing the fan blade in time, and improving work efficiency.

[0015] 2. The present invention uses a plurality of pneumatic rods to drive respective pins to align with the slots on the turntable for fixing, and uses a plurality of pins to evenly distribute the huge torque load driven by the fan blades, thereby improving the overall safety performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall cross section of a wind turbine impeller locking disc;

[0018] Figure 2 It is a schematic top view of a rotating disk of a wind turbine impeller locking disk;

[0019] Figure 3 The present invention is a schematic diagram of a top view of a chassis of a wind turbine impeller locking disk.

[0020] Reference numerals:

[0021] 1. Fixed block; 2. Fan blades; 3. Disc; 4. Lock; 5. Turntable; 6. Casing; 7. Stop block; 8. Slot hole; 9. Fixed ring; 10. Pneumatic rod; 11. Cylinder; 12. Rotary spring; 13. Round hole; 14. Connecting rod; 15. Generator; 16. Chassis; 17. Bearing; 18. Shaft. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-3 According to an embodiment of the present invention, a wind turbine impeller locking disk comprises a shaft 18, a generator 15 and a housing 6, characterized in that the bottom end of the shaft 18 is fixedly connected to the top of the generator 15, the top of the generator 15 is fixedly connected to the bottom end of the connecting rod 14, the top of the connecting rod 14 is fixedly connected to the bottom end of the chassis 16, the chassis 16 is fixedly connected to the inner wall of the housing 6, a circular hole 13 is installed in the middle part of the chassis 16, a bearing 17 is installed between the inner wall of the circular hole 13 and the shaft 18, a return spring 12 is installed in the middle part of the shaft 18, the bottom end of the return spring 12 is fixedly connected to the top of the chassis 16, and the top of the return spring 12 is fixedly connected to the disc 3 The bottom end of the turntable 5 is fixedly connected, the disc 3 is located in the middle part of the bottom end of the turntable 5, the disc 3 is movably connected to the turntable 5, the bottom end of the disc 3 is fixedly connected to one end of the lock buckle 4 around, the shaft rod 18 is movably connected to the turntable 5, the top of the turntable 5 is equipped with a stopper 7, the stopper 7 is threadedly connected to the shaft rod 18, the top of the shaft rod 18 is fixedly connected to the bottom end of the fixed block 1, the fixed block 1 is fixedly connected to one end of the fan blade 2 at equal distances around, the bottom end of the turntable 5 is movably connected to the top end of the cylinder 11, the bottom end of the cylinder 11 is fixedly connected to the top end of the chassis 16, the top end of the chassis 16 is fixedly connected to the bottom end of the pneumatic rod 10 at equal distances, and the pneumatic rods 10 are fixedly connected to the fixed rings 9 respectively.

[0025] Through the above scheme of the present invention, the inner wall of the bottom end of the turntable 5 is provided with a groove, and the groove is engaged with the other end of the lock buckle 4, the shaft rod 18 is movably connected to the middle part of the disc 3, the generator 15 is electrically connected to the external power transmission line, the top of the cylinder 18 is provided with a convex ring, and the convex ring is slidably connected to the bottom end of the turntable 5, the inner wall of the outer shell 6 is provided with a slide groove, and the slide groove is movably connected to the surrounding of the turntable 5, and the top of the pneumatic rod 10 is respectively installed with a pin, and the pin and the slot 8 are engaged with each other.

[0026] Working principle: The fan blade 2 drives the shaft 18 to rotate, and the shaft 18 drives the generator 15 to generate electricity. When the fan blade 2 needs to be fixed and repaired, the lock 4 switch is turned on to fix the disc 3 and the turntable 5, thereby driving the strong return spring 12 on the shaft 18. The return spring 12 gradually weakens the torsion load brought by the fan blade 2, and at the same time drives the fan blade 2 to return to the set position, so that the slot 8 is just in the straight line of the gas pressure rod 10. The gas pressure rod 10 drives the pin to extend, so that the pin is fixed with the slot 8, thereby completing the fixing operation of the fan blade 2, which is convenient for subsequent maintenance by the staff.

[0027] In summary: the present invention can play a good role in weakening torque and returning to the original position through a strong return spring when the wind turbine needs to stop rotating, helping the pins on the gas pressure rod to align with the slots, and fixing the fan blades in time, thereby improving work efficiency. At the same time, multiple gas pressure rods drive their respective pins to align with the slots on the turntable to fix them, and multiple pins are used to spread the huge torque load driven by the fan blades, thereby improving the overall safety performance of the device.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wind turbine impeller locking plate, comprising a shaft (18), a generator (15) and a housing (6), characterized in that: The bottom end of the shaft (18) is fixedly connected to the top end of the generator (15); the top of the generator (15) is fixedly connected to the bottom end of the connecting rod (14) at four sides; the top end of the connecting rod (14) is fixedly connected to the bottom end of the chassis (16); the chassis (16) is fixedly connected to the inner wall of the housing (6) at four sides; a circular hole (13) is installed in the middle of the chassis (16); a bearing (17) is installed between the inner wall of the circular hole (13) and the shaft (18); a return spring (12) is installed in the middle of the shaft (18); the bottom end of the return spring (12) is fixedly connected to the top end of the chassis (16); the top end of the return spring (12) is fixedly connected to the bottom end of the disk (3); the disk (3) is located in the middle of the bottom end of the rotating disk (5); the disk (3) is movably connected to the rotating disk (5); the ... the bearing (17) is installed between the inner wall of the circular hole (13) and the shaft (18); the circular hole (13) is installed in the middle of the chassis (16); the bearing (17) is installed between the inner wall of the circular hole (13) and the shaft (18); the circular hole (13) The bottom end of the disk (3) is fixedly connected to one end of the lock buckle (4) at four sides, the top of the turntable (5) is equipped with a stopper (7), the stopper (7) is threadedly connected to the shaft (18), the top of the shaft (18) is fixedly connected to the bottom end of the fixed block (1), the fixed block (1) is fixedly connected to one end of the fan blade (2) at four sides at equal distances, the bottom end of the turntable (5) is movably connected to the top end of the cylinder (11), the bottom end of the cylinder (11) is fixedly connected to the top end of the chassis (16), the top end of the chassis (16) is fixedly connected to the bottom end of the pneumatic rod (10) at equal distances, the pneumatic rods (10) are fixedly connected to the fixed rings (9) respectively, the inner wall of the bottom end of the turntable (5) is provided with a groove, and the groove can be engaged with the other end of the lock buckle (4), the top of the pneumatic rod (10) is equipped with a latch, and the latch and the slot (8) can be engaged with each other.

2. A wind turbine impeller locking plate according to claim 1, characterized in that: The shaft rod (18) is movably connected to the middle portion of the disc (3).

3. A wind turbine impeller locking plate according to claim 1, characterized in that: The generator (15) is electrically connected to an external transmission line.

4. A wind turbine impeller locking plate according to claim 1, characterized in that: A convex ring is provided at the top end of the cylinder (11), and the convex ring is slidably connected to the bottom end of the rotating disk (5).

5. The wind turbine impeller locking plate according to claim 1, characterized in that: The inner wall of the outer shell (6) is provided with a slide groove, and the slide groove is movably connected to the periphery of the rotating disk (5).

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