CN216866899U - A shock-resistant electromagnetic speed change mechanism for wind turbine yaw motor - Google Patents

Abstract

The purpose of the utility model is to provide an anti-shock electromagnetic speed change mechanism for the yaw motor of a wind turbine, which includes an electromagnetic drive gearbox, an electromagnetic unloading mechanism, and an elastic load buffer. The mechanism can realize multi-stage speed change through electromagnetic drive, and can provide different levels of speed and torque according to the actual yaw situation; at the moment of yaw start and stop, the elastic load buffer can offset the instantaneous impact load; after the yaw brake is activated , the electromagnetic unloading mechanism will protect the yaw motor and the entire mechanism from damage caused by the braking impact. The utility model realizes the multi-level speed change function and the unloading function through electromagnetic drive, minimizes the damage of the yaw system components, and solves the problem of high damage and failure rate of the yaw system.

Description

A shock-resistant electromagnetic speed change mechanism for wind turbine yaw motor

technical field

The utility model relates to the field of wind power generators, in particular to an anti-impact electromagnetic speed change mechanism for a yaw motor of a wind power set.

Background technique

After many years of operation of wind turbines, the problem of sliding yaw system failure is very prominent, mainly in the damage of yaw reducer, burning of drive motor, wear of electromagnetic brake, broken yaw tooth, broken sliding plate, etc. The lower surface is severely worn, increasing the yaw resistance. At the moment of starting the yaw action, due to the large impact of the direct starting torque of the asynchronous motor, when the damping friction of the sliding plate increases or the internal resistance of the reducer increases (such as the viscosity of the gear oil caused by low temperature), it will cause overload, and long-term operation will lead to overload. The transmission mechanism is damaged. After the yaw motor stops, the electromagnetic brake of the motor is turned on. At this time, there will be a backlash between the yaw tooth and the drive gear of the reducer (as shown in Figure 1), and the internal gear of the yaw reducer also has a gear gap. Under the action of the external wind load, the yaw disc will move, and the tooth-tooth impact phenomenon occurs, and the impact force is transmitted to the yaw motor and electromagnetic brake through the reducer.

In view of the above problems, the present utility model provides an anti-shock electromagnetic speed change mechanism for the yaw motor of a wind turbine, which can realize multi-stage speed change through electromagnetic drive, and can provide different levels of rotational speed and torque according to the actual yaw situation, And when the yaw is started and stopped, the yaw motor and the whole mechanism are protected to avoid the damage of the impact load, which solves the problem of high damage and failure rate of the yaw system.

Utility model content

A shock-resistant electromagnetic speed change mechanism for a yaw motor of a wind turbine, comprising: an electromagnetic drive gearbox 1, an electromagnetic unloading mechanism 2, and an elastic load buffer 3; characterized in that the electromagnetic drive gearbox 1 passes through a coupling shaft The front end of the electromagnetic unloading mechanism 2 is connected with the elastic load buffer 3 through the coupling. The mechanism can realize multi-stage speed change through electromagnetic drive, and at the moment of yaw start and stop, the protection The yaw motor and the entire mechanism are protected from damage by instantaneous shock loads.

The electromagnetic drive gearbox 1 is composed of an electromagnetic shifter 4, an input moving gear set 5, an input fixed gear set 6, a transmission spline shaft 7, an output moving gear set 8, an output fixed gear set 9, and an output fixed gear set 9. Spline shaft 10, shift transmission rod 11, input spline shaft 12, spline shaft bearing 13, spline shaft end cover 14; transmission spline shaft 7, output spline shaft 10, input spline shaft 12 through the spline shaft The key shaft end cover 14 is fixed on the gearbox casing; the input fixed gear set 6 cooperates with the input spline shaft 12, the input end moving gear set 5 and the output fixed gear set 9 cooperate with the transmission spline shaft 7, and the output end moves The gear set 8 is matched with the output spline shaft 10, wherein the fixed gear set 6 at the input end and the fixed gear set 9 at the output end are positioned by the spline shaft bearing 13 and cannot move;

The gear 4 is respectively connected with the input moving gear group 5 and the output moving gear group 8 through the shift transmission rod 11; the electromagnetic drive gearbox 1 can change the meshing relationship between the gear groups through the electromagnetic shifter 4, so as to realize Conversion of speed and torque.

The electromagnetic unloading mechanism 2 is composed of a coil casing 15 , an electromagnetic coil 16 , an electromagnetic unloading driving disk 17 , a driving ring gear 18 , a driven ring gear 19 , an electromagnetic unloading driven disk 20 , and a driven end coupling 21 . The electromagnetic coil 16 is fixed on the inner side of the coil housing 15; the driving ring gear 18 is fixed on the electromagnetic unloading driving disk 17 by bolts; the driven ring gear 19 is fixed on the electromagnetic unloading driven disk 20 by bolts; The shaft 21 is fixed on the electromagnetic unloading driven disk 20 by bolts; the electromagnetic unloading driving disk 17, the driving ring gear 18, the driven ring gear 19, the electromagnetic unloading driven disk 20, and the driven end coupling 21 The holes are all internal spline structures and are coaxial; this mechanism drives the electromagnetic unloading driven disk 20 through the electromagnetic coil 16 to realize the meshing control of the driving ring gear 18 and the driven ring gear 19, and loosens when the yaw action stops. The meshing is opened, so that the yaw motor and the electromagnetic drive gearbox 1 are protected from shock loads.

The elastic load buffer 3 is composed of a rotary buffer slider 22, a high-load spring 23, a load buffer main body 24, and a rotary buffer bearing 25; the rotary buffer slider 22 cooperates with the load buffer main body 24, and the rotary buffer slider 22 can be rotated 120 degrees; one end of the high-load spring 23 is fixed on the rotary buffer slider 22, and the other end is fixed on the load buffer main body 24; the rotary buffer bearing 25 is matched with the inner hole of the load buffer main body 24; When there is an instantaneous impact load, the impact load is converted into the pulling force of the high-load spring 23 through the rotation action, so as to achieve the purpose of offsetting the instantaneous impact load.

The electromagnetic shifter 4 is composed of a shifter cover 26 , a shifter spring 27 , a lifting ring screw 28 , a shifter coil 29 , a shifting piston 30 , and a moving iron core 31 ; the moving iron core 31 passes through the lifting ring screw 28 is installed on both sides of the shift piston 30; one end of the shifter spring 27 is connected to the eyebolt 28, and the other end is connected to the shifter cover 26; the electromagnetic shifter 4 can realize the left and right movement of the shift piston 30. The variable speed drive core of the electromagnetic drive gearbox 1.

The beneficial effects of the present utility model:

The mechanism can realize multi-stage speed change through electromagnetic drive, and can provide different levels of speed and torque according to the actual yaw situation; at the moment of yaw start and stop, the elastic load buffer 3 can offset the instantaneous impact load; the yaw brake starts Afterwards, the electromagnetic unloading mechanism 2 will protect the yaw motor and the entire mechanism from being damaged by the braking impact.

Description of drawings

1 is a schematic diagram of an application scenario of an embodiment of the present invention;

Fig. 2 is the general assembly axonometric view of the embodiment of the present utility model;

Fig. 3 is the assembly drawing of the electromagnetic drive gearbox of the embodiment of the present invention;

Fig. 4 is the assembly drawing of the electromagnetic unloading mechanism of the embodiment of the present invention;

5 is an assembly diagram of the elastic load buffer according to the embodiment of the present invention;

Fig. 6 is the assembly drawing of the electromagnetic shifter of the embodiment of the present invention;

1—Electromagnetic drive gearbox; 2—Electromagnetic unloading mechanism; 3—Elastic load buffer; 4—Electromagnetic shifter; 5—Input moving gear group; 6—Input fixed gear group; 7—Transmission spline Shaft; 8—output gear set; 9—output fixed gear set; 10—output spline shaft; 11—shift transmission rod; 12—input spline shaft; 13—spline shaft bearing; 14—spline Shaft end cover; 15—coil shell; 16—electromagnetic coil; 17—electromagnetic unloading driving disk; 18—driving ring gear; 19—driven ring gear; 20—electromagnetic unloading driven disk; 21—driven end coupling Shaft device; 22—rotating buffer slider; 23—high load spring; 24—load buffer body; 25—rotating buffer bearing; 26—shifter cover; 27—shifter spring; 28—eye bolt; 29 - Shifter coil; 30 - Shift piston; 31 - Moving iron core;

Detailed ways

Please refer to FIG. 2 to FIG. 6 , which are embodiments of the present utility model, an anti-shock electromagnetic speed change mechanism (as shown in FIG. 2 ) for the yaw motor of a wind turbine, which includes: an electromagnetic drive gearbox 1, an electromagnetic unloading Mechanism 2, elastic load buffer 3; it is characterized in that the electromagnetic drive gearbox 1 is connected to the end of the electromagnetic unloading mechanism 2 through a coupling, and the front end of the electromagnetic unloading mechanism 2 is connected to the elastic load buffer 3 through a coupling. The mechanism can realize multi-stage speed change through electromagnetic drive, and at the moment of yaw start and stop, the yaw motor and the whole mechanism can be protected from damage by instantaneous impact load.

The electromagnetic drive gearbox 1 (as shown in Figure 3) consists of an electromagnetic shifter 4, an input moving gear set 5, an input fixed gear set 6, a transmission spline shaft 7, an output moving gear set 8, and an output fixed gear set. Gear set 9, output spline shaft 10, shift transmission rod 11, input spline shaft 12, spline shaft bearing 13, spline shaft end cover 14; transmission spline shaft 7, output spline shaft 10, input spline shaft The key shaft 12 is fixed on the gearbox casing through the spline shaft end cover 14; the input end fixed gear set 6 cooperates with the input spline shaft 12, the input end moving gear set 5 and the output end fixed gear set 9 and the transmission spline shaft 7 The output end moving gear set 8 cooperates with the output spline shaft 10, wherein the input end fixed gear set 6 and the output end fixed gear set 9 are positioned by the spline shaft bearing 13 and cannot move; the two electromagnetic shifters 4 pass through The shift transmission rod 11 is connected with the input end drive gear set 5 and the output end drive gear set 8; the electromagnetic drive gearbox 1 can change the meshing relationship between the gear sets through the electromagnetic shifter 4, so as to realize the transformation of speed and torque .

The electromagnetic unloading mechanism 2 (as shown in FIG. 4 ) consists of a coil casing 15, an electromagnetic coil 16, an electromagnetic unloading driving disc 17, a driving ring gear 18, a driven ring gear 19, an electromagnetic unloading driven disc 20, a driven The electromagnetic coil 16 is fixed on the inner side of the coil casing 15; the driving ring gear 18 is fixed on the electromagnetic unloading driving disk 17 by bolts; the driven ring gear 19 is fixed on the electromagnetic unloading driven disk 20 by bolts ; The driven end coupling 21 is fixed on the electromagnetic unloading driven disk 20 by bolts; the electromagnetic unloading driving disk 17, the driving ring gear 18, the driven ring gear 19, the electromagnetic unloading driven disk 20, the driven end The inner holes of the coupling 21 are all internal spline structures and are coaxial; the mechanism drives the electromagnetic unloading driven plate 20 through the electromagnetic coil 16 to realize the meshing control of the driving ring gear 18 and the driven ring gear 19. When the sailing action is stopped, the meshing is released, so that the yaw motor and the electromagnetic drive gearbox 1 are prevented from being subjected to impact loads.

The elastic load buffer 3 (as shown in FIG. 5 ) is composed of a rotary buffer slider 22, a high-load spring 23, a load buffer main body 24, and a rotary buffer bearing 25; the rotary buffer slider 22 cooperates with the load buffer main body 24, And the rotary buffer slider 22 can rotate 120 degrees; one end of the high-load spring 23 is fixed on the rotary buffer slider 22, and the other end is fixed on the load buffer main body 24; the rotary buffer bearing 25 is matched with the inner hole of the load buffer main body 24 ; When the mechanism is subjected to an instantaneous impact load, the impact load is transformed into the tensile force of the high-load spring 23 through rotation, so as to achieve the purpose of offsetting the instantaneous impact load.

The electromagnetic shifter 4 (as shown in FIG. 6 ) is composed of a shifter cover 26 , a shifter spring 27 , an eyebolt 28 , a shifter coil 29 , a shift piston 30 , and a moving iron core 31 ; the moving iron The core 31 is installed on both sides of the shift piston 30 through the lifting ring screw 28; one end of the shifter spring 27 is connected to the lifting ring screw 28, and the other end is connected to the shifter cover 26; the electromagnetic shifter 4 can realize the shifting piston 30 The left and right movement is the variable speed drive core of the electromagnetic drive gearbox 1.

The electromagnetic shifter 4 can realize the left and right movement of the shift piston 30 , and is the core of the variable speed drive of the electromagnetically driven gearbox 1 . The electromagnetic drive gearbox 1 can change the meshing relationship between the gear sets through the electromagnetic shifter 4, so as to realize the transformation of rotation speed and torque, and the mechanism can provide different levels of rotation speed and torque according to the actual yaw situation. The electromagnetic unloading mechanism 2 drives the electromagnetic unloading driven disc 20 through the electromagnetic coil 16 to realize the meshing control of the driving ring gear 18 and the driven ring gear 19. When the yaw brake is activated, the electromagnetic unloading mechanism 2 will release the driving gear The meshing of the ring 18 and the driven ring gear 19 protects the yaw motor and the entire mechanism from being damaged by the braking impact. At the moment of yaw start and stop, the elastic load buffer 3 can offset the instantaneous impact load.

The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essential content of the present invention. The embodiments of the present application and features in the embodiments may be arbitrarily combined with each other without conflict.

Claims (5)

1. an impact-resistant electromagnetic speed change mechanism for a yaw motor of a wind turbine, comprising: an electromagnetic drive gearbox (1), an electromagnetic unloading mechanism (2), an elastic load buffer (3); it is characterized in that, The electromagnetic drive gearbox (1) is connected with the end of the electromagnetic unloading mechanism (2) through a coupling, and the front end of the electromagnetic unloading mechanism (2) is connected with the elastic load buffer (3) through the coupling, and the mechanism can be driven by electromagnetic It realizes multi-stage speed change, and protects the yaw motor and the entire mechanism at the moment of yaw start and stop, and avoids damage from instantaneous impact loads. 2. The impact-resistant electromagnetic speed change mechanism for the yaw motor of a wind turbine according to claim 1, wherein the electromagnetic drive gearbox (1) is composed of an electromagnetic shifter (4), an input end The movable gear set (5), the input fixed gear set (6), the transmission spline shaft (7), the output movable gear set (8), the output fixed gear set (9), the output spline shaft (10), Shift transmission rod (11), input spline shaft (12), spline shaft bearing (13), spline shaft end cover (14); transmission spline shaft (7), output spline shaft (10), The input spline shaft (12) is fixed on the gearbox casing through the spline shaft end cover (14); the input end fixed gear set (6) cooperates with the input spline shaft (12), and the input end moving gear set (5) and The fixed gear set (9) at the output end cooperates with the transmission spline shaft (7), and the moving gear set (8) at the output end cooperates with the spline shaft (10) at the output end, wherein the fixed gear set at the input end (6) and the fixed gear at the output end The group (9) is positioned by the spline shaft bearing (13) and cannot move; the two electromagnetic shifters (4) are connected to the input end moving gear group (5) and the output end moving gear group respectively through the shift transmission rod (11) (8) are connected; the electromagnetic drive gearbox (1) can change the meshing relationship between the gear sets through the electromagnetic shifter (4), so as to realize the transformation of rotational speed and torque. 3. The shock-resistant electromagnetic speed change mechanism for the yaw motor of a wind turbine according to claim 1, wherein the electromagnetic unloading mechanism (2) is composed of a coil casing (15), an electromagnetic coil (16) ), electromagnetic unloading driving disc (17), driving ring gear (18), driven ring gear (19), electromagnetic unloading driven disc (20), driven end coupling (21); electromagnetic coil ( 16) Fixed on the inner side of the coil housing (15); the driving ring gear (18) is fixed on the electromagnetic unloading drive plate (17) by bolts; the driven ring gear (19) is fixed on the electromagnetic unloading driven plate (20) by bolts ); the driven end coupling (21) is fixed on the electromagnetic unloading driven plate (20) by bolts; the electromagnetic unloading driving plate (17), the driving ring gear (18), the driven ring gear (19) , The electromagnetic unloading driven disc (20) and the inner hole of the driven end coupling (21) are all internal spline structures and are coaxial; the mechanism drives the electromagnetic unloading driven disc (16) through the electromagnetic coil (16). 20), to realize the meshing control of the driving ring gear (18) and the driven ring gear (19), and release the meshing when the yaw action stops, so that the yaw motor and the electromagnetic drive gearbox (1) are protected from shock loads. 4. The shock-resistant electromagnetic speed change mechanism for the yaw motor of a wind turbine according to claim 1, wherein the elastic load buffer (3) is composed of a rotating buffer slider (22), a high load The spring (23), the load buffer main body (24), and the rotating buffer bearing (25) are composed; ) degree rotation; one end of the high-load spring (23) is fixed on the rotary buffer slider (22), and the other end is fixed on the load buffer body (24); the rotary buffer bearing (25) and the inner part of the load buffer body (24) Hole matching; when the mechanism is subjected to an instantaneous impact load, the impact load is converted into the pulling force of the high-load spring (23) through rotation, so as to achieve the purpose of offsetting the instantaneous impact load. 5. The shock-resistant electromagnetic speed change mechanism for the yaw motor of a wind turbine according to claim 2, characterized in that the electromagnetic shifter (4) is formed by a shifter cover (26), a changer The stopper spring (27), the lifting ring screw (28), the shifter coil (29), the shifting piston (30), and the moving iron core (31) are composed; the moving iron core (31) is installed on the Both sides of the shift piston (30); one end of the shifter spring (27) is connected to the lifting ring screw (28), and the other end is connected to the shifter cover (26); the electromagnetic shifter (4) can realize shifting The left and right movement of the piston (30) is the variable speed drive core of the electromagnetically driven gearbox (1).

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