DE202023106852U1 - Locking device for the rotor blades of the wind turbine - Google Patents

Abstract

A locking device for the rotor blades of the wind turbine, comprising an internal gear ring (1), on the outer wall of which a lubricating device (2) for the rotor blades is attached, wherein the lubricating device (2) comprises a circular groove (201) which is attached in the outer wall of the internal gear ring (1), wherein in the circular groove (201) there is a ball (202) which can move therein, wherein on the outer wall of the ball (202) a connecting rod (203) is attached, on the outer wall of which an oil tank (204) is attached, wherein on the underside of the outer wall of the oil tank (204) a motor (205) is attached; an output shaft of the motor (205) is connected to a connecting shaft (206) via a coupling, a drive wheel (207) which engages with a drive wheel (208) being mounted on the outer wall of the drive wheel (208), an opening (209) being located on the outer wall of the drive wheel (208), at the bottom of which an oil outlet pipe (210) is mounted, a bearing (211) being mounted on the outer wall of the oil tank (204).

Description

Technical area

The utility model relates to the technical field of wind energy generation, in particular to a locking device for the rotor blades of the wind turbine.

Background technology

Wind energy generation converts the kinetic energy of the wind into electrical energy. Wind energy is a clean, environmentally friendly renewable energy source. During the installation of wind turbines, the instability of the blades may cause the crane to oscillate, which in turn may lead to crane overturns and safety accidents. During the blade lifting process, it is necessary to lock the blades.

After research, an existing patent (disclosure number: CN218325102U ) for a device for locking the rotor blades of the wind turbine. This device comprises an internal gear ring, on the surface of which a fastening bolt is screwed. A fastening block is screwed into the surface of the fastening bolt. Inside, the fastening block is connected to an inner rod, the lower end of which is firmly connected to a spring. Inside, the spring is firmly connected to a damping telescopic rod. On the surface of the inner rod there is a limit groove into which a limit bolt is screwed. At one end of the inner rod there is a connecting disk, on the surface of which a threaded bolt is screwed. At one end of the threaded bolt a toothed clamp is rotatably connected by a bearing. This device for locking the rotor blades of the wind turbine allows the user to pull the inner rod into the correct position and then fix it using the limit bolt. The toothed clamp can then be clamped into the gear ring of the inner gear ring to enable easy locking of the inner gear ring. When implementing the utility model, it was found that the existing technology has the following problems:

When using the existing device for locking the rotor blades of the wind turbine, long-term operation of the tooth clamp while the blades are moving may cause wear or damage to the tooth flanks, which will affect the rotation of the blades. Therefore, it is necessary to install a lubricating device for using the rotor blades of the wind turbine.

For this reason, a locking device for the rotor blades of the wind turbine is proposed, which solves the above-mentioned problems.

Content of the utility model

To solve the above problems, a locking device for the rotor blades of the wind turbine is proposed.

To achieve this goal, the present utility model proposes the following technical solution: a locking device for the rotor blades of the wind turbine, which comprises an internal gear ring, a lubricating device for the rotor blades of the wind turbine is attached to the outer wall of the internal gear ring. The lubricating device comprises a circular groove made in the outer wall of the internal gear ring. In the circular groove there is a ball that can move in it. A connecting rod is attached to the outer wall of the ball, on the outer wall of which an oil tank is attached. A motor is attached to the underside of the outer wall of the oil tank.

The output shaft of the engine is connected to a connecting shaft via a coupling. A drive gear is mounted on the outer wall of the connecting shaft and is in engagement with a drive gear. An opening is mounted on the outer wall of the drive gear, at the bottom of which an oil outlet pipe is mounted. A bearing is mounted on the outer wall of the oil tank.

In a preferred embodiment, the connecting rod is arranged in two groups and symmetrically around the oil tank. The oil tank is arranged on the center line of the internal gear ring.

In a preferred embodiment, the connecting shaft penetrates the bottom of the oil tank. The drive wheel and the follower wheel are mounted inside the oil tank. The oil drain pipe is mounted at the bottom of the oil tank.

In a preferred embodiment, a toothed clamp is attached to the inside of the inner gear ring, and an outer gear ring whose size matches the inner gear ring is attached to the outside of the inner gear ring.

In a preferred embodiment, a locking device for the rotor blades of the wind turbine is attached to the outer wall of the outer gear ring. The locking device comprises a hole located on the outer wall of the outer gear ring.

In a preferred embodiment, a threaded bolt is screwed into the interior of the hole. A screw nut is attached to one end of the threaded bolt, and a groove is provided on the outer wall of the nut. A locking pin housing is attached to the outer wall of the threaded bolt.

In a preferred embodiment, an inner chamber and a sealing ring are attached to the outer wall of the locking pin housing. A mounting hole is provided inside the locking pin housing, on the inner wall of which a steel ball is attached. The outer wall of the steel ball is connected to the threaded bolt.

1. 1. Im Vergleich zum Stand der Technik verbessert die Verriegelungsvorrichtung für die Rotorblätter der Windkraftanlage die Leistungsfähigkeit durch die gegenseitige Zusammenarbeit der Schmiervorrichtung. Durch das Hinzufügen von Schmieröl während der Drehung des Antriebsrades und des Mitnehmerrades wird die Ermüdungsbeständigkeit der Zahnflanken verbessert, um Abnutzung oder Beschädigung an den Zahnflanken zu vermeiden und die Effizienz der Verwendung zu steigern.
2. 2. Im Vergleich zum Stand der Technik gewährleistet die Verriegelungsvorrichtung für die Rotorblätter der Windkraftanlage durch die gegenseitige Zusammenarbeit der Verriegelungsvorrichtung eine verbesserte Verriegelungswirkung. Unter Verwendung des Verriegelungsstiftgehäuse, des Gewindebolzens und der Stahlkugel wird die Stahlkugel durch den Gewindebolzen befestigt und die Rotorblätter werden durch die Stahlkugel weiterhin verriegelt und in einer festen Position fixiert. Dadurch wird effektiv vermieden, dass die Rotorblätter während des Betriebs locker werden, und die Verriegelungswirkung bei der Verwendung wird verbessert.

The advantageous effects of the present utility model are

1. 1. Compared with the prior art, the wind turbine blade locking device improves the performance through the mutual cooperation of the lubricating device. By adding lubricating oil during the rotation of the drive gear and the follower gear, the fatigue resistance of the tooth flanks is improved to prevent wear or damage to the tooth flanks and improve the efficiency of use.
2. 2. Compared with the prior art, the locking device for the rotor blades of the wind turbine ensures an improved locking effect through the mutual cooperation of the locking device. Using the locking pin housing, the threaded bolt and the steel ball, the steel ball is fixed by the threaded bolt, and the rotor blades are further locked and fixed in a fixed position by the steel ball. This effectively prevents the rotor blades from becoming loose during operation and improves the locking effect when using.

Illustration of the attached drawings

• 1 is a three-dimensional representation of the present utility model from an overall view.
• 2 is a sectional view of the present utility model.
• 3 is an enlarged view of structure A in 2 of the present utility model.
• 4 is a schematic representation of the structure of the locking device of the present utility model.

• 1,Innenzahnkranz; 2, Schmiervorrichtung; 201, Kreisförmige Nut; 202, Kugel; 203, Verbindungsstab; 204, Öltank; 205, Motor; 206, Verbindungswelle; 207, Antriebsrad; 208, Mitnehmerrad; 209, Öffnung; 210, Ölabflussrohr; 211, Lager; 3, Zahnschelle; 4, Außenzahnkranz; 5, Verriegelungsvorrichtung; 501, Loch; 502, Schreubenmutter; 503, Nut; 504, Gewindebolzen; 505, Innenkammer; 506, Verriegelungsstiftgehäuse; 507, Dichtungsring; 508, Montageloch; 509, Stahlkugel.

In the drawings, numbers indicate the following components:

• 1,Internal gear; 2,Lubrication device; 201,Circular groove; 202,Ball; 203,Connecting rod; 204,Oil tank; 205,Motor; 206,Connecting shaft; 207,Drive gear; 208,Drive gear; 209,Orifice; 210,Oil drain pipe; 211,Bearing; 3,Tooth clamp; 4,External gear; 5,Locking device; 501,Hole; 502,Screw nut; 503,Groove; 504,Threaded bolt; 505,Inner chamber; 506,Lock pin housing; 507,Sealing ring; 508,Mounting hole; 509,Steel ball.

Specific embodiments

In the following, the technical solution is described clearly and completely using the figures in the embodiments of the utility model. Obviously, the present embodiment represents only a part of the embodiments of the utility model. Based on the embodiments in this utility model application, all other embodiments developed by experts in this field without creative activity also fall within the scope of protection of this utility model.

Example 1

Referring to the 1-2 This embodiment of the present utility model provides a locking device for the rotor blades of the wind turbine. The locking device comprises an internal gear ring 1, on the outer wall of which a lubricating device 2 for the rotor blades is attached. The lubricating device 2 comprises a circular groove 201 which is attached in the outer wall of the internal gear ring 1. In the circular groove 201 there is a ball 202 which can move therein. On the outer wall of the ball 202 there is attached a connecting rod 203, on the outer wall of which an oil tank 204 is attached. On the underside of the outer wall of the oil tank 204 there is attached a motor 205.

The output shaft of the motor 205 is connected to a connecting shaft 206 via a coupling. A drive gear 207 is attached to the outer wall of the connecting shaft 206 and is in engagement with a drive gear 208. An opening 209 is attached to the outer wall of the drive gear 208, at the bottom of which an oil outlet pipe 210 is attached. A bearing 211 is attached to the outer wall of the oil tank 204. The connecting rod 203 is arranged in two groups and symmetrically around the oil tank 204. The oil tank 204 is arranged on the center line of the internal ring gear 1. The connecting shaft 206 penetrates the bottom of the oil tank 204, and the drive gear 207 and the follower gear 208 are arranged inside the oil tank 204. The oil drain pipe 210 is arranged on the bottom of the oil tank 204.

At this time, the internal ring gear 1 rotates simultaneously with the oil tank 204 through the connecting rod 203 and the ball 202, which facilitates lubrication, so that the motor 205 drives the drive gear 207 to rotate, and the drive gear 207 simultaneously drives the follower gear 208 to rotate. When the opening 209 coincides with the oil drain pipe 210, the lubricating oil inside the oil tank 204 flows downward to facilitate lubrication.

Example 2

• In einer bevorzugten Ausführungsform ist an der Innenseite des Innenzahnkranzes 1 eine Zahnschelle 3 angebracht, und an der Außenseite des Innenzahnkranzes 1 ist ein Außenzahnkranz 4 angebracht, dessen Größe zum Innenzahnkranz 1 passt. Darüber hinaus werden die Rotorblätte der Windkraftanlage durch den Außenzahnkranz 4 montiert, um eine einfachere Rotation der Blätter zu ermöglichen.
• In einer bevorzugten Ausführungsform ist an der Außenwand des Außenzahnkranzes 4 eine Verriegelungsvorrichtung 5 für die Rotorblätte der Windkraftanlage angebracht. Die Verriegelungsvorrichtung 5 umfasst ein Loch 501, das sich an der Außenwand des Außenzahnkranzes 4 befindet. Weiter werden die Rotorblätter durch die Verriegelungsvorrichtung 5 bei der Montage weiter gesichert und positioniert, um ein Lösen während des Betriebs zu vermeiden.
• In einer bevorzugten Ausführungsform ist in den Innenraum des Loches 501 ein Gewindebolzen 504 eingeschraubt. An einem Ende des Gewindebolzens 504 ist eine Schraubenmutter 502 befestigt, an deren Außenwand eine Nut 503 angebracht ist. An der Außenwand des Gewindebolzens 504 ist ein Verriegelungsstiftgehäuse 506 angebracht. Weiter werden Rotorblätter durch den Außenzahnkranz 4 montiert, um eine stabilere Verriegelung zu erreichen und ein Lösen zu vermeiden.
• In einer bevorzugten Ausführungsform sind eine Innenkammer 505 und ein Dichtungsring 507 an der Außenwand des Verriegelungsstiftgehäuses 506 angebracht. Im Inneren des Verriegelungsstiftgehäuses 506 ist ein Montageloch 508 angebracht, an dessen Innenwand eine Stahlkugel 509 angebracht ist. Die Außenwand der Stahlkugel 509 ist mit dem Gewindebolzen 504 verbunden. Durch Drehen des Gewindebolzens 504 wird die Stahlkugel 509 an dem Montageloch 508 nach innen gedrückt, um eine Verriegelungsbegrenzung zu gewährleisten. Beim Demontieren werden die Stahlkugel 509 durch Drehen des Gewindebolzens 504 zurückgezogen, um das Verriegelungsstiftgehäuse 506 aus dem Loch 501 zu entfernen.

Based on Embodiment 1, the proposed embodiment is described with respect to the specific working methods as described in the 1-4 presented in detail, further refined below:

• In a preferred embodiment, a toothed clamp 3 is attached to the inside of the inner gear 1, and an outer gear 4 is attached to the outside of the inner gear 1, the size of which matches the inner gear 1. In addition, the rotor blades of the wind turbine are mounted by the outer gear 4 to enable easier rotation of the blades.
• In a preferred embodiment, a locking device 5 for the rotor blades of the wind turbine is attached to the outer wall of the external gear ring 4. The locking device 5 comprises a hole 501 located on the outer wall of the external gear ring 4. Furthermore, the rotor blades are further secured and positioned by the locking device 5 during assembly in order to prevent them from coming loose during operation.
• In a preferred embodiment, a threaded bolt 504 is screwed into the interior of the hole 501. A screw nut 502 is attached to one end of the threaded bolt 504, on the outer wall of which a groove 503 is provided. A locking pin housing 506 is attached to the outer wall of the threaded bolt 504. Furthermore, rotor blades are mounted through the external gear ring 4 in order to achieve a more stable locking and to prevent loosening.
• In a preferred embodiment, an inner chamber 505 and a sealing ring 507 are attached to the outer wall of the locking pin housing 506. A mounting hole 508 is provided inside the locking pin housing 506, on the inner wall of which a steel ball 509 is attached. The outer wall of the steel ball 509 is connected to the threaded bolt 504. By turning the threaded bolt 504, the steel ball 509 is pressed inward at the mounting hole 508 to ensure a locking limit. During disassembly, the steel ball 509 is retracted by turning the threaded bolt 504 to remove the locking pin housing 506 from the hole 501.

Due to the arrangement of bevel gears, the two threaded rods 15 can be easily rotated when the drive gear 14 is rotated.

• Bei Verwendung werden die Rotorblätter auf dem Außenzahnkranz 4 montiert und durch die Schraubenmutter 502 und den Gewindebolzen 504 fixiert. Das Verriegelungsstiftgehäuse 506 durchdringt den Außenzahnkranz 4, und durch die Nut 503 wird der Gewindebolzen 504 in der Innenkammer 505 nach unten gedreht, um die Strahlkugel 509 an dem Montageloch 508 nach innen zu drücken und eine Verriegelungsbegrenzung zu gewährleisten. Beim Demontieren wird der Gewindebolzen 504 durch Drehen durch die Nut 503 herausgedreht, wobei die Strahlkugel 509 nach innen zurückgezogen wird, um das Verriegelungsstiftgehäuse 506 aus dem Loch 501 zu entfernen. Dadurch wird die Wartung erleichtert. Wenn die Zahnschelle 3 längere Zeit gedreht wird, wird der Motor 205 gestartet, um das Antriebsrad 207 und das Mitnehmerrad 208 zur Drehung anzutreiben. Während des Drehens tritt die Öffnung 209 automatisch an der Position des Ölabflussrohrs 210 aus, wodurch das Schmiermittel im Öltank 204 über das Ölabflussrohr 210 auf die Zahnschelle 3 fällt. Dadurch wird das Schmieröl während des Betriebs der Rotorblätter rechtzeitig zugeführt, um die Effizienz des Betriebs zu verbessern.

The working method of the present utility model is as follows:

• In use, the rotor blades are mounted on the external gear ring 4 and fixed by the screw nut 502 and the threaded bolt 504. The locking pin housing 506 penetrates the external gear ring 4, and through the groove 503, the threaded bolt 504 is rotated downward in the inner chamber 505 to press the jet ball 509 inward at the mounting hole 508 and ensure locking limitation. When disassembling, the threaded bolt 504 is rotated out by rotating through the groove 503, with the jet ball 509 retracted inward to remove the locking pin housing 506 from the hole 501. This facilitates maintenance. When the gear ring 3 is rotated for a long time, the motor 205 is started to drive the drive gear 207 and the follower gear 208 to rotate. During rotation, the opening 209 automatically leaks at the position of the oil drain pipe 210, causing the lubricant in the oil tank 204 to fall onto the toothed clamp 3 via the oil drain pipe 210. This timely supplies the lubricating oil during the operation of the rotor blades to improve the efficiency of operation.

It should be noted that the above-mentioned embodiments are only intended to explain the technical solution of the present utility model and are not restrictive. Although the best embodiment has been described in detail, those skilled in the art should understand that they can change the technical solution of the present utility model or replace it with an equivalent one without changing the spirit and to depart from the scope of protection of the technical solution of the present utility model.

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely to provide the reader with better information. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• CN 218325102 U [0003]

Claims (7)

A locking device for the rotor blades of the wind turbine, comprising an internal gear ring (1), on the outer wall of which a lubricating device (2) for the rotor blades is attached, wherein the lubricating device (2) comprises a circular groove (201) which is attached in the outer wall of the internal gear ring (1), wherein in the circular groove (201) there is a ball (202) which can move therein, wherein on the outer wall of the ball (202) a connecting rod (203) is attached, on the outer wall of which an oil tank (204) is attached, wherein on the underside of the outer wall of the oil tank (204) a motor (205) is attached; an output shaft of the motor (205) is connected to a connecting shaft (206) via a coupling, a drive wheel (207) which engages with a drive wheel (208) being mounted on the outer wall of the drive wheel (208), an opening (209) being located on the outer wall of the drive wheel (208), at the bottom of which an oil outlet pipe (210) is mounted, a bearing (211) being mounted on the outer wall of the oil tank (204). The locking device for the rotor blades of the wind turbine according to Claim 1 , characterized in that the connecting rods (203) are arranged in two groups and symmetrically around the oil tank (204), the oil tank (204) being arranged on the center line of the internal gear ring (1). The locking device for the rotor blades of the wind turbine according to Claim 1 , characterized in that the connecting shaft (206) penetrates the bottom of the oil tank (204), the drive wheel (207) and the driver wheel (208) are mounted inside the oil tank (204), the oil drain pipe (210) being mounted at the bottom of the oil tank (204). The locking device for the rotor blades of the wind turbine according to Claim 1 , characterized in that a toothed clamp (3) is attached to the inside of the inner gear ring (1) and an outer gear ring (4) is attached to the outside of the inner gear ring (1), the size of which matches that of the inner gear ring (1). The locking device for the rotor blades of the wind turbine according to Claim 4 , characterized in that a locking device (5) for the rotor blades of the wind turbine is attached to the outer wall of the external gear ring (4), wherein the locking device (5) comprises a hole (501) which is located on the outer wall of the external gear ring (4). The locking device for the rotor blades of the wind turbine according to Claim 5 , characterized in that a threaded bolt (504) is screwed into the interior of the hole (501), wherein a screw nut (502) is fastened to one end of the threaded bolt (504), on the outer wall of which a groove (503) is provided, wherein a locking pin housing (506) is provided on the outer wall of the threaded bolt (504). The locking device for the rotor blades of the wind turbine according to Claim 6 , characterized in that an inner chamber (505) and a sealing ring (507) are attached to the outer wall of the locking pin housing (506), wherein a mounting hole (508) is provided in the interior of the locking pin housing (506), wherein a steel ball (509), the outer wall of which is connected to the threaded bolt (504), is attached to the inner wall of the mounting hole (508).

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