Wind power generation equipment with improved track moving mechanism

Abstract

The utility model relates to wind power generation equipment with improved track moving mechanisms. The wind power generation equipment comprises an annular guide rail and a plurality of track moving mechanisms sliding on the annular guide rail, the track moving mechanism comprises a frame plate; a lift blade; a pulley; the stress adjusting part comprises a first gear, a second gear, a driving motor, a wind direction sensor and a PLC, and the first gear is connected with the lift force blade and arranged on the lower side of the frame plate; the driving motor is installed on the lower side of the frame plate, an output shaft of the driving motor extends downwards and is rotationally connected with the second gear, and the second gear is meshed with the first gear. Through cooperation of the stress adjusting piece, the driving motor, the gear, the variable-pitch bearing, the wind direction sensor and the PLC, the capacity of sensing the wind direction can be achieved, the windward side of the lift force blade can be automatically adjusted, the lift force blade has the better self-adaptive adjusting capacity, and under the condition that the wind speed suddenly changes or the wind direction frequently changes, the lift force blade can automatically adjust the windward side of the lift force blade. And the attitude adjustment of the lift blades can be quickly responded.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation technical field especially relates to a wind power generation equipment of improved track moving mechanism. BACKGROUND

[0002] Wind energy as a kind of renewable, green energy, in recent years, has been widely applied in the global scope. Vertical axis wind power generation equipment because of its strong wind direction adaptability, low noise, easy to install and other characteristics, also gradually become the important choice of small and distributed wind power system. Among them, guide rail type vertical axis wind power generation device as a new structure form, adopt annular guide rail and track moving mechanism cooperation, make the collection and conversion of wind energy have strong continuity and structural flexibility, have certain application potential.

[0003] For example, China patent CN202422406500 discloses a guide rail type vertical axis wind power generation equipment, which moves along annular track through multiple track moving mechanisms, drives lift blade rotation, and realizes wind energy conversion through traction rope connection driving shaft. This structure realizes annular motion by sliding cooperation between guide rail and moving mechanism, realizes the stability and wind rotation of blade through rotating assembly, anti-tilting mechanism and other components, and finally drives generator to generate electricity.

[0004] However, the guide rail type vertical axis wind power generation equipment still has the following technical problems:

[0005] ①The adaptability of track moving mechanism to wind load is poor, motor load is large, energy consumption is high, and service life is limited;

[0006] ②The self-adaptive adjustment ability of the connecting structure between the lift blade and the track moving mechanism is poor, the blade posture adjustment lags behind in the case of sudden change of wind speed or frequent change of wind direction, which affects the overall power generation efficiency. INVENTION CONTENTS

[0007] The utility model aims at providing a kind of wind power generation equipment of improved track moving mechanism, can let lift blade have better self-adaptive adjustment ability, in the case of sudden change of wind speed or frequent change of wind direction, the posture adjustment of lift blade can rapidly respond.

[0008] The utility model realizes by following technical scheme:

[0009] A kind of wind power generation equipment of improved track moving mechanism, including annular guide rail, driving shaft, speed increasing gear box, generator and multiple track moving mechanisms on annular guide rail sliding;

[0010] The driving shaft is arranged at the center of the annular guide rail and is connected with the generator through a speed increasing gear box; a plurality of traction ropes are connected with the driving shaft, and each traction rope is connected with a corresponding track moving mechanism; the track moving mechanisms are connected through connecting rods, and each track moving mechanism can move along the annular guide rail in a ring shape;

[0011] The track moving mechanism comprises:

[0012] A frame plate, a connecting hole is arranged in the middle of the frame plate, and a variable pitch bearing is arranged in the connecting hole;

[0013] A lift blade, the middle of the lift blade is fixedly connected with the inner ring of the variable pitch bearing;

[0014] A pulley, a plurality of pulleys are rotatably connected to the inner and outer sides of the frame plate and are rotatably connected in the annular guide rail; and

[0015] A stress adjusting member, the stress adjusting member comprises a first gear, a second gear, a driving motor, a wind direction sensor and a PLC, the first gear is connected with the lift blade and is arranged on the lower side of the frame plate; the driving motor is arranged on the lower side of the frame plate, the output shaft of the driving motor extends downward and is rotatably connected with the second gear, the second gear is meshed with the first gear; the wind direction sensor and the driving motor are connected with the PLC.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. By utilizing the stress adjusting member, the cooperation of the driving motor, the gear, the variable pitch bearing and the wind direction sensor and the PLC can realize the ability of sensing the wind direction and autonomously adjusting the windward surface of the lift blade, so that the lift blade has better self-adaptive adjusting ability, and the posture adjustment of the lift blade can rapidly respond in the case that the wind speed suddenly changes or the wind direction frequently changes.

[0018] 2. By utilizing the stress adjusting member, the emergency shutdown ability can also be realized, the mutual offset of the stress between different track moving mechanisms is realized by adjusting the angle of the lift blade, so that the equipment is rapidly shut down, and the maintenance and repair are facilitated.

[0019] 3. The annular track and the modular track moving mechanism design facilitate the maintenance and replacement of a single track moving mechanism, and reduce the overall maintenance cost and time of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a structural schematic view of the utility model;

[0021] Fig. 2 It is a position schematic view of the pulley;

[0022] Fig. 3Fig. 1 is a schematic view of the connection structure of the track moving mechanism and the annular track as a whole;

[0023] Fig. 4 Fig. 4 is a position view of the force relieving spring.

[0024] Label explanation: 1 track moving mechanism, 11 bracket, 12 variable pitch bearing, 13 lift blade, 14 pulley, 151 first gear, 152 second gear, 153 driving motor, 16 force relieving spring, 21 inner ring rail, 22 outer ring rail. DETAILED DESCRIPTION

[0025] The utility model will be explained in detail in combination with the drawings below, but the protection content of the utility model is not limited to the following:

[0026] As shown in Figs. 1 to 4 Fig. 1 is a wind power generation equipment with improved track moving mechanism, which comprises an annular guide rail, a driving shaft, a speed increasing gear box, a generator and a plurality of track moving mechanisms 1 sliding on the annular guide rail;

[0027] The driving shaft is arranged at the center of the annular guide rail, and the driving shaft is connected with the generator through the speed increasing gear box; a plurality of traction ropes are connected to the driving shaft, and each traction rope is connected with a corresponding track moving mechanism; the track moving mechanisms 1 are connected through connecting rods, and each track moving mechanism 1 can move in a ring shape along the annular guide rail;

[0028] The track moving mechanism 1 comprises:

[0029] The bracket 11 is provided with a connecting hole in the middle part, and a variable pitch bearing 12 is installed in the connecting hole;

[0030] The lift blade 13 is fixedly connected with the inner ring of the variable pitch bearing 12 in the middle part;

[0031] The pulley 14 is rotatably connected to the inner and outer sides of the bracket 11, and the pulley 14 is rotatably connected to the annular guide rail; and

[0032] The stress adjusting member comprises a first gear 151, a second gear 152, a driving motor 153, a wind direction sensor and a PLC, the first gear 151 is connected with the lift blade 13 and arranged on the lower side of the bracket 11; the driving motor 153 is installed on the lower side of the bracket 11, the output shaft of the driving motor 153 extends downward and is rotatably connected with the second gear 152, the second gear 152 is engaged with the first gear 151; the wind direction sensor and the driving motor 153 are connected with the PLC.

[0033] Further, the annular guide rail comprises an inner ring rail 21 and an outer ring rail 22;

[0034] The inner ring rail 21 and the outer ring rail 22 are provided with annular through grooves on opposite surfaces, and the inner and outer ends of the shelf plate 11 are matched with the annular through grooves, and a plurality of pulleys 14 are rotationally connected to the interiors of the inner ring rail 21 and the outer ring rail 22.

[0035] It should be noted that the utility model utilizes stress adjusting parts, including the cooperation of a driving motor, a gear, a variable pitch bearing, a wind direction sensor and a PLC, can realize the ability of sensing the wind direction and autonomously adjusting the windward surface of the lift blade, so that the lift blade has better self-adaptive adjustment capability, and in the case of sudden change of wind speed or frequent change of wind direction, the attitude adjustment of the lift blade can quickly respond. It can also realize the emergency shutdown capability, realize the mutual offset of the stress between different track moving mechanisms by adjusting the angle of the lift blade, so that the equipment can be quickly stopped for maintenance. The annular track and the modular track moving mechanism design facilitate the maintenance and replacement of a single track moving mechanism, and reduce the overall maintenance cost and time of the equipment.

[0036] Further, the cross section of the lift blade 13 is in the shape of an airfoil.

[0037] It should be noted that the design of the airfoil shape makes the lift blade 13 have good aerodynamic performance, conforms to the law of air flow, makes the airflow on the surface of the lift blade 13 more smooth, reduces the resistance, thereby improves the operating efficiency of the lift blade 13, and further improves the moving efficiency of the track moving mechanism and the power generation efficiency of the entire wind power generation equipment.

[0038] Further, the upper and lower sides of the shelf plate 11 are provided with a plurality of unloading springs 16, one end of the unloading spring 16 is fixedly connected with the shelf plate 11, and the other end of the unloading spring 16 is fixedly connected with the lift blade 13.

[0039] It should be noted that the unloading spring 16 can make the lift blade 13 more stable, and in the case of sudden change of wind force with large amplitude, the unloading spring 16 can absorb the instantaneous impact force, reduce the direct loss of the motor and the gear, and also can prevent the case of overall deviation of the track moving mechanism caused by sudden excessive power of the lift blade 13, reduce the long-term fatigue load borne by each component, thereby prolong the service life of the entire device.

[0040] Although the utility model adopts specific embodiments and its alternative ways to illustrate and describe the utility model, it should be understood that various changes and modifications within the spiritual range of the utility model can be implemented. Therefore, it should be understood that the utility model is not limited in any sense except for the appended claims and their equivalent conditions.

Claims

1. A wind power generation device with an improved track moving mechanism, comprising an annular guide rail, a drive shaft, a speed-increasing gearbox, a generator, and multiple track moving mechanisms sliding on the annular guide rail (1). The drive shaft is located at the center of the annular guide rail and is connected to the generator through a speed-increasing gearbox. Multiple traction ropes are connected to the drive shaft, and each traction rope is connected to a corresponding track moving mechanism. The track moving mechanisms (1) are connected to each other through connecting rods, and each track moving mechanism (1) can move in a ring along the annular guide rail. Its features are, The track moving mechanism (1) includes: The frame plate (11) has a connecting hole in the middle, and a pitch bearing (12) is installed in the connecting hole. The lifting blade (13) is fixedly connected to the inner ring of the pitch bearing (12) at its center. Several pulleys (14) are rotatably connected to the inner and outer sides of the frame plate (11), and the pulleys (14) are rotatably connected to the annular guide rail; and The stress adjustment component includes a first gear (151), a second gear (152), a drive motor (153), a wind direction sensor, and a PLC. The first gear (151) is connected to the lifting blade (13) and is located on the lower side of the frame plate (11). The drive motor (153) is installed on the lower side of the frame plate (11). The output shaft of the drive motor (153) extends downward and is rotatably connected to the second gear (152). The second gear (152) meshes with the first gear (151). The wind direction sensor and the drive motor (153) are both connected to the PLC.

2. The wind power generation equipment with an improved track moving mechanism according to claim 1, characterized in that: The annular guide rail includes an inner ring rail (21) and an outer ring rail (22). The inner ring rail (21) and the outer ring rail (22) are provided with annular through grooves on their opposite surfaces. The inner and outer ends of the frame plate (11) are engaged with the annular through grooves, and several pulleys (14) are rotatably connected to the inside of the inner ring rail (21) and the outer ring rail (22).

3. The wind power generation equipment with an improved track moving mechanism according to claim 1, characterized in that: The cross-section of the lifting blade (13) is airfoil-shaped.

4. A wind power generation device with an improved track moving mechanism according to claim 1, characterized in that: The upper and lower sides of the frame plate (11) are provided with several unloading springs (16). One end of each unloading spring (16) is fixedly connected to the frame plate (11), and the other end of each unloading spring (16) is fixedly connected to the lifting blade (13).

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