CN209959395U - A wind turbine high-speed shaft protection device - Google Patents

Abstract

The utility model relates to the technical field of wind power generation, in particular to a wind turbine high-speed shaft protection device, comprising an installation base, a tower and a nacelle are fixedly arranged on the top of the installation base, a high-speed shaft is arranged in the nacelle, and one end of the high-speed shaft is provided with a rotating The blade, the high-speed shaft is provided with a connecting seat, one side of the connecting seat is provided with a bearing chamber, the bearing chamber is provided with a buffer chute and a bearing, the connecting seat is connected by the bearing chamber and the bearing rotation with a brake disc, and one side of the brake disc is provided with a circular The ring bulges, the ring bulge is provided with a connecting rod, one end of the connecting rod is provided with a sliding block, a buffer spring is fixed between the sliding block and the groove wall of the buffer chute, and a buffer spring that matches the brake disc is fixed in the engine room. Hydraulic brake system. The utility model is simple in structure, strong in protection performance, has market prospect and is suitable for popularization.

Description

A wind turbine high-speed shaft protection device

technical field

The utility model relates to the technical field of wind power generation, in particular to a protection device for a high-speed shaft of a wind power generator.

Background technique

Wind power is a mechanical device that converts wind energy into mechanical energy and then mechanical energy into electrical energy. The development of wind power generation technology has experienced from the initial stage to the current stage of technological maturity, mainly using the design concept of "horizontal axis, three blades, upwind direction". type, semi-direct drive type (or hybrid type). Wind turbine brakes are mainly used for safety systems. High-speed shaft brakes have high operating speeds, large braking loads, and poor safety. Braking in an emergency state will lead to rapid wear of brake discs and brake pads, and even brake discs or brakes in extreme conditions. When the friction plate is broken, a large braking load will also cause the high-speed shaft to be damaged by a large instantaneous braking force. For this reason, we propose a wind turbine high-speed shaft protection device to solve the above problems.

Utility model content

The purpose of the utility model is to solve the shortcoming in the prior art that the high-speed shaft is damaged by a large instantaneous braking force during the braking process, and proposes a protection device for the high-speed shaft of a wind turbine.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

Design a high-speed shaft protection device for wind turbines, including an installation base, a tower is fixed on the top of the installation base, a nacelle is arranged on the top of the tower, and a high-speed shaft is arranged in the nacelle through a rotating connection. One end of the shaft is fixed with a rotating blade, and a connecting seat is fixed on the high-speed shaft. The connecting seat is a ring-shaped structure. One side of the connecting seat is provided with a bearing chamber, and one side of the bearing chamber is provided with a bearing chamber. There is a buffer chute, the buffer chute is an arc-shaped groove structure, and the three buffer chute are equally divided into the inner side of the bearing chamber, and the bearing chamber is sleeved with a matching bearing, so The connecting seat is rotatably connected with the bearing chamber and the bearing and is provided with a brake disc, the middle of the brake disc is provided with a through hole matching the high-speed shaft, and the brake disc is movably sleeved on the through hole through the through hole. The outer wall of the high-speed shaft and the side opposite to the connecting seat of the brake disc are provided with annular protrusions, the outer diameter of the annular ring of the annular protrusion is equal to the inner diameter of the bearing, and the annular protrusion is The inner side of the bearing is assembled and sleeved, and three connecting rods are fixed at equal angles on the opposite side of the annular protrusion and the connecting seat, and one end of the connecting rods is fixed with the buffer slide A sliding block with matching grooves, a buffer spring is fixed between the sliding block and the groove wall of the buffer chute, and a hydraulic brake system matching the brake disc is fixed in the engine room.

Preferably, the hydraulic braking system is connected to the control cabinet of the wind turbine through wires.

Preferably, the buffer spring is an arc-shaped structure matched with the buffer chute, and the buffer spring has an elastic force that prevents the brake disc from rotating relative to the connection seat.

Preferably, a limiting device is provided on the inner side of the bearing chamber to limit the disengagement of the annular protrusion on the brake disc, and the limiting device includes a limiting groove, and the limiting groove is arranged on the circumference of the bearing chamber. On the inner side, the brake disc is provided with a limit protrusion matched with the limit groove.

The utility model proposes a high-speed shaft protection device for wind turbines, which has the beneficial effects that: through the mutual cooperation between the connecting seat with the bearing chamber, the bearing and the buffer chute and the brake disc with the connecting rod and the buffer spring, the When the wind turbine high-speed shaft protection device is in the wind-proof parking operation, the hydraulic brake system brakes the brake disc. Before the brake disc is fully braked, the braking force is reduced by the buffer sliding action of the connecting rod and the buffer spring in the buffer chute. Compared with the existing braking system, it can effectively protect the high-speed shaft from a large instantaneous braking force during the braking process, effectively protect the service life of the high-speed shaft, and increase the speed of the high-speed shaft. Practical performance.

Description of drawings

Fig. 1 is the structural representation of a kind of wind turbine high-speed shaft protection device proposed by the utility model;

2 is a partial cross-sectional structural schematic diagram of a wind turbine high-speed shaft protection device proposed by the utility model;

Fig. 3 is the enlarged schematic diagram of A area in Fig. 2;

Fig. 4 is the front exploded structure schematic diagram of the brake disc and the connecting seat proposed in the utility model;

FIG. 5 is a schematic diagram of the rear exploded structure of the brake disc and the connecting seat proposed in the utility model.

In the figure: mounting base 1, tower 2, rotating blade 3, nacelle 4, high-speed shaft 5, brake disc 6, connecting seat 7, hydraulic brake system 8, buffer chute 9, bearing 10, connecting rod 11, buffer spring 12 , Bearing chamber 13 .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

1-5, a wind turbine high-speed shaft protection device includes a mounting base 1, a tower 2 is fixed on the top of the mounting base 1, a nacelle 4 is provided on the top of the tower 2, and a high-speed shaft is connected in the nacelle 4 through rotation. The shaft 5, one end of the high-speed shaft 5 is fixed with a rotating blade 3, the high-speed shaft 5 is fixed with a connecting seat 7, the connecting seat 7 is a ring-shaped structure, and one side of the connecting seat 7 is provided with a bearing chamber 13, the bearing chamber 13 A buffer chute 9 is provided on one side of the bearing chamber. The buffer chute 9 is an arc-shaped groove structure. The three buffer chute 9 are equally and equally arranged on the inside of the bearing chamber 13. The bearing chamber 13 is sleeved with a matching bearing. 10. The connecting seat 7 is rotatably connected with a brake disc 6 through the bearing chamber 13 and the bearing 10. The middle of the brake disc 6 is provided with a through hole that matches the high-speed shaft 5, and the brake disc 6 is movably sleeved on the high-speed shaft 5 through the through hole. The outer wall, the opposite side of the brake disc 6 and the connecting seat 7 is provided with a ring protrusion, the outer diameter of the ring protrusion is equal to the inner diameter of the bearing 10, the ring protrusion is sleeved on the inner side of the bearing 10, and the bearing chamber 13 The inner side is provided with a limiting device for limiting the separation of the annular protrusion on the brake disc 6. The limiting device includes a limiting groove. The limiting groove is arranged on the inner side of the circumference of the bearing chamber 13. Matching stop bumps.

Three connecting rods 11 are fixed at equal angles on the opposite side of the annular protrusion and the connecting seat 7, and one end of the connecting rods 11 is fixed with a sliding block matching the buffer chute 9. The sliding block and the buffer chute A buffer spring 12 is fixed between the groove walls of the There is a hydraulic brake system 8 matched with the brake disc 6, and the hydraulic brake system 8 is connected to the control cabinet of the wind turbine through wires.

When in use, through the mutual cooperation between the connecting seat 7 with the bearing chamber 13, the bearing 10 and the buffer chute 9 and the brake disc 6 with the connecting rod 11 and the buffer spring 12, the wind turbine high-speed shaft protection device is installed in the windmill. During the windproof parking operation, the brake disc 6 is braked by the hydraulic brake system 8. Before the brake disc 6 is completely braked, the braking force is gradually reduced to the connection rod 11 and the buffer spring 12 through the buffer sliding action of the buffer chute 9. The seat 7 then locks the rotation of the high-speed shaft 5. Compared with the existing braking system, it can effectively protect the high-speed shaft 5 from being subjected to a large instantaneous braking force during the braking process, effectively protect the service life of the high-speed shaft 5, and increase the practical performance.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (4)

1. A wind turbine high-speed shaft protection device, comprising an installation base (1), characterized in that a tower (2) is fixedly arranged on the top of the installation base (1), and a tower (2) is provided on the top A nacelle (4), a high-speed shaft (5) is provided in the nacelle (4) through a rotational connection, one end of the high-speed shaft (5) is fixedly provided with a rotating blade (3), and the high-speed shaft (5) is fixed on A connecting seat (7) is provided, the connecting seat (7) is a ring-shaped structure, one side of the connecting seat (7) is provided with a bearing chamber (13), and one side of the bearing chamber (13) is provided with a bearing chamber (13). There is a buffer chute (9), the buffer chute (9) is an arc-shaped groove structure, and the three buffer chute (9) are equally angularly arranged on the inner side of the bearing chamber (13), and the bearing The chamber (13) is sleeved with a matching bearing (10), and the connecting seat (7) is rotatably connected with a brake disc (6) through the bearing chamber (13) and the bearing (10), A through hole matching the high-speed shaft (5) is provided in the middle of the brake disc (6), and the brake disc (6) is movably sleeved on the outer wall of the high-speed shaft (5) through the through hole, The side opposite to the connecting seat (7) of the brake disc (6) is provided with a circular ring protrusion, and the outer diameter of the circular ring of the circular ring protrusion is equal to the inner diameter of the bearing (10). The ring protrusion is sleeved on the inner side of the bearing (10), and three connecting rods (11) are fixed at equal angles on the side opposite to the connecting seat (7). One end of (11) is fixedly provided with a sliding block matching the buffer chute (9), and a buffer spring (12) is fixed between the sliding block and the groove wall of the buffer chute (9), A hydraulic brake system (8) matching the brake disc (6) is fixed in the engine room (4). 2 . The high-speed shaft protection device for wind turbines according to claim 1 , wherein the hydraulic braking system ( 8 ) is connected to the control cabinet of the wind turbine through wires. 3 . 3 . The high-speed shaft protection device for wind turbines according to claim 1 , wherein the buffer spring ( 12 ) is an arc-shaped structure matched with the buffer chute ( 9 ). 4 . The spring (12) has an elastic force that prevents the brake disc (6) from rotating relative to the connecting seat (7). 4. A high-speed shaft protection device for wind turbines according to claim 1, characterized in that, the inner side of the bearing chamber (13) is provided with a limiter that restricts the disengagement of the annular protrusion on the brake disc (6). Positioning device, the limiting device includes a limiting slot, the limiting slot is arranged on the inner side of the circumference of the bearing chamber (13), and the brake disc (6) is provided with a matching slot for the limiting slot. Limit bulge.

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