A shaft driving mechanism for a wind wheel of a wind turbine

Abstract

The utility model discloses an axial driving mechanism of a wind wheel of a wind turbine in the technical field of wind power generation, comprising a chassis, a low-speed rotating shaft is rotatably arranged on the outer side of the chassis, an impeller is arranged on the outer end of the low-speed rotating shaft, a fixing frame is fixedly arranged on the inner side of the chassis, a threaded rod is rotatably arranged on the inner side of the fixing frame, and threaded blocks are sleeved on two opposite threads on the outer side of the threaded rod, mounting blocks are fixedly arranged on the outer side of two groups of threaded blocks, a fixing rod is fixedly arranged on the inner side of the mounting block, a toothed disk is fixedly arranged on the outer side of the fixing rod, a gear for docking the toothed disk is fixedly sleeved on the outer side of the low-speed rotating shaft, and a motor for docking the threaded rod is arranged on the outer side of the fixing frame. The utility model can facilitate the rapid fixing of the low-speed rotating shaft through a simple mounting structure, thereby facilitating the maintenance of the generator set, ensuring the stability of the fixing of the low-speed rotating shaft, and improving the maintenance efficiency of the generator set. It has good practical effects and is worthy of being promoted and used in the existing market.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, and more specifically to an axial driving mechanism of a wind wheel of a wind power generator. Background Art

[0002] Wind energy is a clean, environmentally friendly and renewable resource. Compared with solar energy, geothermal energy, ocean energy, hydrogen energy, combustible ice and other new energy sources, wind energy generation is more mature and produces no carbon emissions. It is the most ideal green energy in the contemporary era. The working principle of wind turbines is relatively simple. The wind wheel rotates under the action of wind power, which converts the kinetic energy of the wind into the mechanical energy of the wind wheel shaft. The generator rotates and generates electricity under the drive of the wind wheel shaft. In a broad sense, wind energy is also solar energy, so it can also be said that wind turbines are a kind of heat energy generator that uses the sun as a heat source and the atmosphere as a working medium.

[0003] When the wind wheel rotates, it drives the low-speed shaft to rotate. The low-speed shaft drives the high-speed shaft to rotate through the gear assembly, thereby driving the generator to generate electricity. When inspecting the inside of the generator set, both the low-speed shaft and the high-speed shaft need to remain fixed. Since the wind wheel and the low-speed shaft are connected, and the wind wheel is large and difficult to fix, the low-speed shaft is generally fixed. The traditional fixing method is generally to fix the low-speed shaft through a friction wheel. The friction wheel and the low-speed shaft are fixed by friction, and the fixing effect is not good. It takes a long time to fix the low-speed shaft, thereby reducing the maintenance efficiency of the generator set.

[0004] In view of this, we propose a shaft-driven mechanism for a wind wheel of a wind turbine. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model aims to provide a shaft-driven mechanism for a wind wheel of a wind turbine, so as to solve the problem in the above-mentioned background technology that the existing low-speed rotating shaft is inconvenient to fix, resulting in poor fixing effect of the low-speed rotating shaft and affecting the maintenance efficiency of the generator set.

[0007] 2. Technical solution

[0008] A shaft-driven mechanism for a wind wheel of a wind turbine comprises a chassis, a low-speed shaft being rotatably arranged on the outer side of the chassis, an impeller being arranged on the outer end of the low-speed shaft, and the low-speed shaft movably passes through the chassis and extends to the inner side, a fixing frame being fixedly arranged on the inner side of the chassis, a threaded rod being rotatably arranged on the inner side of the fixing frame, two sections of threads in opposite directions being arranged on the outer side of the threaded rod, and threaded blocks being sleeved on the two sections of threads in opposite directions on the outer side of the threaded rod, mounting blocks being fixedly arranged on the outer sides of two groups of the threaded blocks, a fixing rod being fixedly arranged on the inner side of the fixing block, a toothed disk being fixedly arranged on the outer end of the fixing rod, a gear for docking with the toothed disk being fixedly sleeved on the outer side of the low-speed shaft, and a motor for docking with the threaded rod being arranged on the outer side of the fixing frame.

[0009] Preferably, a generator body is fixedly arranged inside the chassis, a high-speed rotating shaft is arranged outside the generator body, and a gear box for connecting the low-speed rotating shaft and the high-speed rotating shaft is arranged inside the chassis.

[0010] Preferably, a connecting rod is fixedly provided on the outside of the mounting block, a mounting plate is fixedly provided on the outer end of the connecting rod, a mounting tube is fixedly provided on the outer side of the mounting plate, a movable rod is movably inserted on the inside of the mounting tube, the movable rod movably passes through the mounting tube and extends to the outside, and an arc block is fixedly provided on the outer end of the movable rod at the outer part of the mounting tube.

[0011] Preferably, a spring is arranged inside the installation tube, one end of the spring is connected to the inside of the installation tube, and the other end of the spring is connected to the movable rod.

[0012] Preferably, a friction pad that docks with the low-speed shaft is fixedly provided on the outer side of the arc block.

[0013] Preferably, two groups of limiting grooves for docking with the threaded blocks are provided on the inner side of the fixing frame.

[0014] Preferably, a mounting box is fixedly provided on the outside of the fixing frame, the motor is fixedly installed on the inside of the mounting box, and the power end of the motor movably passes through the fixing frame and is fixedly connected to the threaded rod.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The utility model provides a fixing frame, a threaded rod, a threaded block, a mounting block, a toothed disc, a gear, a motor and other mechanisms, and through the mutual cooperation of various mechanisms, it is convenient to quickly fix the low-speed shaft, thereby facilitating the maintenance of the generator set, ensuring the stability of the low-speed shaft fixation, and improving the maintenance efficiency of the generator set.

[0018] 2. The utility model provides a mounting plate, a mounting cylinder, a movable rod, a spring, an arc block, a friction pad and other mechanisms, and through the mutual cooperation of various mechanisms, it is convenient to frictionally decelerate the low-speed shaft, thereby reducing the rotation speed of the low-speed shaft, making it easier for the toothed disc to engage the gear to fix the low-speed shaft, avoiding the low-speed shaft from breaking due to its large inertia, and improving the overall fixing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the side section structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the fixing mechanism of the utility model;

[0023] Explanation of the numbers in the figure: 1 chassis, 2 low-speed shaft, 3 gear box, 4 generator body, 5 high-speed shaft, 6 impeller, 7 fixed frame, 8 threaded rod, 9 threaded block, 10 mounting block, 11 fixed rod, 12 toothed plate, 13 gear, 14 connecting rod, 15 mounting plate, 16 mounting cylinder, 17 movable rod, 18 spring, 19 arc block, 20 motor, 21 friction pad, 22 limit groove, 23 mounting box. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] See also Figure 1-4 ,The utility model provides a technical solution:

[0028] A shaft-driven mechanism for a wind wheel of a wind turbine comprises a chassis 1, a low-speed shaft 2 is rotatably arranged on the outer side of the chassis 1, an impeller 6 is arranged at the outer end of the low-speed shaft 2, and the low-speed shaft 2 movably passes through the chassis 1 and extends to the inner side, a fixing frame 7 is fixedly arranged on the inner side of the chassis 1, a threaded rod 8 is rotatably arranged on the inner side of the fixing frame 7, two sections of threads in opposite directions are arranged on the outer side of the threaded rod 8, and threaded blocks 9 are sleeved on the two sections of threads in opposite directions on the outer side of the threaded rod 8, mounting blocks 10 are fixedly arranged on the outer sides of two groups of threaded blocks 9, a fixing rod 11 is fixedly arranged on the inner side of the mounting block 10, a toothed disc 12 is fixedly arranged on the outer end of the fixing rod 11, a gear 13 fixedly sleeved on the outer side of the low-speed shaft 2 for docking with the toothed disc 12, a motor 20 docking with the threaded rod 8 is arranged on the outer side of the fixing frame 7, and the two groups of toothed discs 12 mesh with the gear 13, so as to lock the low-speed shaft 2, thereby improving the fixing stability of the low-speed shaft 2.

[0029] Specifically, a generator body 4 is fixedly arranged on the inner side of the chassis 1, a high-speed rotating shaft 5 is arranged on the outer side of the generator body 4, and a gear box 3 is arranged on the inner side of the chassis 1 to connect the low-speed rotating shaft 2 and the high-speed rotating shaft 5. The speed of the high-speed rotating shaft 5 can be increased by changing the speed of the gear box 3, thereby facilitating the generator body 4 to generate electricity.

[0030] Furthermore, a connecting rod 14 is fixedly provided on the outside of the mounting block 10, a mounting plate 15 is fixedly provided on the outer end of the connecting rod 14, a mounting tube 16 is fixedly provided on the outer side of the mounting tube 15, a movable rod 17 is movably inserted into the inner side of the mounting tube 16, the movable rod 17 movably passes through the mounting tube 16 and extends to the outside, and an arc block 19 is fixedly provided on the outer end of the movable rod 17 at the outer part of the mounting tube 16. When the toothed disc 12 moves, the mounting block 10 can also drive the arc block 19 to move, thereby facilitating the deceleration and then fixing of the low-speed shaft 2.

[0031] It is worth mentioning that a spring 18 is provided on the inner side of the mounting tube 16, one end of the spring 18 is connected to the inner side of the mounting tube 16, and the other end of the spring 18 is connected to the movable rod 17. The spring 18 does not deform in its initial state. When the arc block 19 contacts the low-speed shaft 2, it can drive the movable rod 17 to squeeze the spring 18, thereby causing the spring 18 to deform. At this time, the elastic potential energy of the spring 18 can drive the pressure between the arc block 19 and the low-speed shaft to increase, thereby facilitating the deceleration of the low-speed shaft.

[0032] It is worth noting that a friction pad 21 is fixedly arranged on the outer side of the arc block 19 to dock with the low-speed shaft 2. The friction pad 21 contacts the low-speed shaft 2 and can increase the friction between the low-speed shaft 2, so that the deceleration effect on the low-speed shaft 2 is better.

[0033] In addition, two sets of limiting grooves 22 for docking the threaded block 9 are provided on the inner side of the fixed frame 7. By setting the limiting grooves 22, the threaded block 9 can be conveniently limited, so that when the threaded rod 8 rotates, the threaded block 9 can be driven to move parallel to the threaded rod 8, thereby improving the movement stability of the threaded block 9.

[0034] It must be mentioned that an installation box 23 is fixedly provided on the outside of the fixed frame 7, the motor 20 is fixedly installed on the inside of the installation box 23, and the power end of the motor 20 movably passes through the fixed frame 7 and is fixedly connected to the threaded rod 8. By setting the installation box 23, the motor 20 can be easily installed and the installation stability of the motor 20 can be improved.

[0035] Working principle: First, the motor 20 is turned on by an external power supply to drive the threaded rod 8 to rotate. At this time, the two groups of threaded blocks 9 sleeved on the outside of the threaded rod 8 move simultaneously along the threaded rod 8 under the limiting action of the limiting groove 22, and the distance is getting closer and closer. When the threaded block 9 moves, it drives the mounting block 10 and the connecting rod 14 to move, and the connecting rod 14 drives the mounting plate 15 and the mounting cylinder 16 to move, and the mounting cylinder 16 drives the arc block 19 and the friction pad 21 to move. At this time, the friction pad 21 contacts the low-speed rotating shaft 2, and at the same time, as the movable rod 17 continues to move, the elastic compression Spring 18, thereby making the friction force between the friction pad 21 and the low-speed shaft 2 greater and greater, so that the low-speed shaft 2 can be decelerated, and at the same time, the mounting block 10 drives the toothed disc 12 to move when it moves, and the toothed disc 12 gradually moves and meshes with the gear 13, so that the gear 13 can be fixed, and when the gear 13 is fixed, the low-speed shaft 2 is fixed, so that it is convenient to fix the low-speed shaft 2 while avoiding directly fixing the low-speed shaft 2, which causes the gear 13 or the low-speed shaft 2 to break due to the large rotational inertia of the low-speed shaft 2.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A shaft-driven mechanism for a wind turbine rotor, comprising a housing (1), characterized in that: A low-speed rotating shaft (2) is rotatably arranged on the outer side of the chassis (1), an impeller (6) is arranged on the outer end of the low-speed rotating shaft (2), and the low-speed rotating shaft (2) movably penetrates the chassis (1) and extends to the inner side, a fixing frame (7) is fixedly arranged on the inner side of the chassis (1), a threaded rod (8) is rotatably arranged on the inner side of the fixing frame (7), two sections of threads in opposite directions are arranged on the outer side of the threaded rod (8), and threaded blocks (9) are sleeved on the two sections of threads in opposite directions on the outer side of the threaded rod (8), and mounting blocks (10) are fixedly arranged on the outer sides of the two groups of threaded blocks (9), a fixing rod (11) is fixedly arranged on the inner side of the mounting block (10), and a toothed disc (12) is fixedly arranged on the outer end of the fixing rod (11), a gear (13) that is connected to the toothed disc (12) is fixedly sleeved on the outer side of the low-speed rotating shaft (2), and a motor (20) that is connected to the threaded rod (8) is arranged on the outer side of the fixing frame (7).

2. The shaft-driven mechanism of the wind wheel of a wind turbine according to claim 1, characterized in that: A generator body (4) is fixedly arranged on the inner side of the chassis (1), a high-speed rotating shaft (5) is arranged on the outer side of the generator body (4), and a gear box (3) is arranged on the inner side of the chassis (1) for docking with the low-speed rotating shaft (2) and the high-speed rotating shaft (5).

3. The shaft-driven mechanism of the wind wheel of a wind turbine according to claim 1, characterized in that: A connecting rod (14) is fixedly arranged on the outside of the mounting block (10); a mounting plate (15) is fixedly arranged on the outside end of the connecting rod (14); a mounting tube (16) is fixedly arranged on the outside of the mounting plate (15); a movable rod (17) is movably inserted into the inside of the mounting tube (16); the movable rod (17) movably penetrates the mounting tube (16) and extends to the outside; and an arc block (19) is fixedly arranged on the outside end of the movable rod (17) located on the outside of the mounting tube (16).

4. The shaft-driven mechanism of the wind wheel of a wind turbine according to claim 3, characterized in that: A spring (18) is arranged inside the installation tube (16), one end of the spring (18) is connected to the inside of the installation tube (16), and the other end of the spring (18) is connected to the movable rod (17).

5. The shaft-driven mechanism of the wind wheel of a wind turbine according to claim 3, characterized in that: A friction pad (21) is fixedly arranged on the outer side of the arc block (19) and is adapted to engage with the low-speed rotating shaft (2).

6. The shaft-driven mechanism of the wind wheel of a wind turbine according to claim 1, characterized in that: Two groups of limiting grooves (22) for docking with the threaded blocks (9) are provided on the inner side of the fixing frame (7).

7. The shaft-driven mechanism of the wind wheel of a wind turbine according to claim 1, characterized in that: An installation box (23) is fixedly arranged on the outside of the fixing frame (7), the motor (20) is fixedly installed on the inside of the installation box (23), and the power end of the motor (20) movably penetrates the fixing frame (7) and is fixedly connected to the threaded rod (8).

Images