Wind power variable pitch motor with front brake

Abstract

The invention discloses a wind power variable pitch motor with a front brake, which comprises a motor body, a brake and an encoder, and further comprises an adaptive shaft, the brake is arranged at the front end of the motor body, the encoder is arranged at the rear end of the motor body, one end of the adaptive shaft is detachably and coaxially connected with the shaft extension of the motor body, and the other end of the adaptive shaft is detachably and coaxially connected with the shaft extension of the motor body. The other end of the rotating shaft penetrates out of the rotating shaft containing cavity of the brake and is connected with the brake. According to the wind power variable pitch motor with the front brake, the brake and the encoder are arranged at the front end and the rear end of the motor body respectively, and the encoder is installed away from the brake and is prevented from being interfered by the magnetic field of the brake. And meanwhile, the adaptive shaft is arranged, so that motor bodies with different shaft extension and interface requirements can be met.

Description

Technical Field

[0001] The present invention relates to the field of motors, and more specifically, to a wind turbine pitch-changing motor with a front brake. Background Art

[0002] The commonly used wind turbine pitch motor structure includes the motor body, brake, encoder, etc. The motor shaft extension and flange interface are customized according to customer requirements, such as the attached Figure 1 As shown in the figure, the brake is rear-mounted at the tail of the motor and connected through a special rear flange, and the encoder is installed on the brake through an adapter; from the perspective of the shaft extension connection form, the matching forms of the motor shaft extension end and the gearbox include flat keyway, spline, etc., and the front flange interface is configured with different sizes according to different needs. This results in a variety of motor specifications, a variety of materials, poor versatility, and high supply chain management costs; from the perspective of the encoder installation position, it is close to the brake. For motors equipped with large braking torque brakes, the magnetic field generated by the brake power-on will cause certain interference to the encoder signal, which is easy to cause the driver to alarm. Summary of the invention

[0003] The purpose of the present invention is to provide a wind turbine pitch motor with a front brake, wherein the brake and the encoder are respectively arranged at the front and rear ends of the motor body, and the encoder is installed away from the brake to avoid interference from its magnetic field. At the same time, an adapter shaft is arranged, which can meet the motor body with different shaft extension and interface requirements.

[0004] In order to achieve these purposes and other advantages according to the present invention, a wind turbine pitch motor with a front brake is provided, including a motor body, a brake and an encoder, and also an adapter shaft. The brake is arranged at the front end of the motor body, and the encoder is arranged at the rear end of the motor body. One end of the adapter shaft is detachably coaxially connected to the shaft extension of the motor body, and the other end thereof passes through the rotating shaft cavity of the brake and is connected thereto.

[0005] Furthermore, in the wind turbine pitch motor with a front brake, a mounting assembly is connected to the front end of the motor body, the brake is arranged in the mounting assembly, and the other end of the adapter shaft passes through the mounting assembly.

[0006] Furthermore, in the wind turbine pitch motor with a front brake, the mounting assembly includes an adapter flange and a connecting cylinder, one end of the connecting cylinder is connected to the adapter flange, and the other end is detachably connected to the front flange of the motor body, and the other end of the adapter shaft passes through the adapter flange and is rotatably connected to it.

[0007] Furthermore, in the wind turbine pitch motor with a front brake, a positioning plate corresponding to the front flange of the motor body is provided at the other end of the connecting tube, and the positioning plate is detachably connected to the front flange of the motor body.

[0008] Furthermore, in the wind turbine pitch motor with a front brake, a plurality of heat dissipation ribs are arranged at intervals on the connecting tube.

[0009] Furthermore, in the wind turbine pitch motor with a front brake, the adapter shaft is fixedly connected to the shaft extension of the motor body through a connecting piece, and a limit piece is provided between the adapter shaft and the shaft extension of the motor body to limit the relative rotation of the two.

[0010] Furthermore, in the wind turbine pitch motor with a front brake, one end of the adapter shaft is provided with a connecting groove corresponding to the shaft extension of the motor body, and the shaft extension of the motor body is embedded in the connecting groove.

[0011] Furthermore, in the wind turbine pitch motor with a front brake, the connecting part is a screw, the axial extension of the motor body is provided with a threaded hole, the adapter shaft is coaxially provided with a connecting hole, and the other end thereof is provided with a limiting hole corresponding to the head of the screw, the screw rod of the screw passes through the connecting hole and is threadedly installed in the threaded hole, and the screw is tightened until its head contacts the bottom wall of the limiting hole, so that the adapter shaft can be connected and fixed to the axial extension of the motor body.

[0012] Furthermore, in the wind turbine pitch motor with a front brake, the limiting member is a flat key, and the adapter shaft and the shaft extension of the motor body are respectively provided with a first groove and a second groove, and the first groove and the second groove are spliced ​​into a limiting groove matching the flat key, and the flat key is arranged in the limiting groove.

[0013] The beneficial effects of the present invention are:

[0014] 1. In the wind turbine pitch motor with a front brake of the present invention, the brake is installed in front on the motor shaft extension, that is, the structure of the brake, the motor body, and the encoder; the motor body is made into standard modularization and uses standard materials to reduce costs;

[0015] 2. In the wind turbine pitch motor with a front brake of the present invention, different shaft extension interface requirements are realized through an adapter shaft and an adapter flange, which are connected to the shaft extension of the motor body, and the brake is installed on the shaft extension adapter shaft and the adapter flange; the encoder is installed at the rear end of the motor, away from the brake to avoid being affected by its magnetic field.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of a commonly used wind turbine pitch motor structure described in the background technology;

[0018] Figure 2 It is a structural schematic diagram of a wind turbine pitch motor with a front brake according to the present invention;

[0019] Figure 3 This is a cross-sectional view of a wind turbine pitch motor with a front brake according to the present invention.

[0020] Front flange 1; motor body 2; rear flange 3; brake 4; encoder 5; adapter shaft 6; adapter flange 7; screw 8; flat key 9. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0022] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] like Figure 2-Figure 3 As shown, an embodiment of the present invention provides a wind turbine pitch motor with a front brake 4, including a motor body 2, a brake 4 and an encoder 5, and also includes an adapter shaft 6. The brake 4 is arranged at the front end of the motor body 2, and the encoder 5 is arranged at the rear end of the motor body 2. One end of the adapter shaft 6 is detachably coaxially connected to the shaft extension of the motor body 2, and the other end thereof passes through the rotating shaft cavity of the brake 4 and is connected thereto.

[0024] In this embodiment, one end of the adapter shaft 6 can be modified accordingly according to the actual size of the shaft extension of the motor body 2, while keeping the other end of the adapter shaft 6 unchanged, and using the other end of the adapter shaft 6 as the output shaft of the wind turbine pitch motor, so that when different motor bodies 2 are used, the wind turbine pitch motor can maintain the same output shaft.

[0025] Preferably, as another embodiment of the present invention, the front end of the motor body 2 is connected to a mounting assembly, the brake 4 is arranged in the mounting assembly, and the other end of the adapter shaft 6 passes through the mounting assembly.

[0026] In this embodiment, a mounting assembly is connected to the front end of the motor body 2, the brake 4 is arranged in the mounting assembly, and the wind turbine pitch motor is mounted through the mounting assembly. Specifically, the mounting assembly includes an adapter flange 7 and a connecting cylinder, one end of the connecting cylinder is connected to the adapter flange 7, and the other end is detachably connected to the front flange 1 of the motor body 2, and the other end of the adapter shaft 6 passes through the adapter flange 7 and is rotatably connected thereto. The adapter flange 7 can be used for the installation of the wind turbine pitch motor.

[0027] Preferably, as another embodiment of the present invention, a positioning plate corresponding to the front flange 1 of the motor body 2 is provided at the other end of the connecting tube, and the positioning plate is detachably connected to the front flange 1 of the motor body 2 .

[0028] In this embodiment, a positioning plate is provided at the other end of the connecting tube to facilitate the positioning and connection of the motor body 2 and the mounting assembly.

[0029] Preferably, as another embodiment of the present invention, a plurality of heat dissipation ribs are provided at intervals on the connecting tube.

[0030] In this embodiment, a plurality of heat dissipation ribs are arranged at intervals on the connecting tube. The connecting tube may be composed of a plurality of heat dissipation ribs to facilitate heat dissipation of the brake 4 .

[0031] Preferably, as another embodiment of the present invention, the adapter shaft 6 is connected and fixed to the shaft extension of the motor body 2 through a connecting piece, and a limit piece is provided between the adapter shaft 6 and the shaft extension of the motor body 2 to limit the relative rotation of the two.

[0032] In this embodiment, the adapting shaft 6 is connected and fixed to the shaft extension through a connecting member, and the relative rotation between the two is limited by a limiting member, so that when the shaft extension rotates, the adapting shaft 6 is driven to rotate coaxially and synchronously. Specifically, one end of the adapting shaft 6 is provided with a connecting groove corresponding to the shaft extension of the motor body 2, and the shaft extension of the motor body 2 is embedded in the connecting groove. The connecting member is a screw 8, the shaft extension of the motor body 2 is provided with a threaded hole, the adapting shaft 6 is coaxially provided with a connecting hole, and the other end thereof is provided with a limiting hole corresponding to the head of the screw 8, the screw rod of the screw 8 passes through the connecting hole and is threadedly installed in the threaded hole, and the screw 8 is tightened until its head contacts the bottom wall of the limiting hole, so that the adapting shaft 6 can be connected and fixed to the shaft extension of the motor body 2. The limiting member is a flat key 9, and the adapting shaft 6 and the shaft extension of the motor body 2 are respectively provided with a first groove and a second groove, and the first groove and the second groove are spliced ​​into a limiting groove matching the flat key 9, and the flat key 9 is arranged in the limiting groove.

[0033] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A wind turbine pitch motor with a front brake, comprising a motor body, a brake and an encoder, characterized in that: It also includes an adapter shaft, the brake is arranged at the front end of the motor body, the encoder is arranged at the rear end of the motor body, one end of the adapter shaft is detachably coaxially connected to the shaft extension of the motor body, and the other end thereof passes through the rotating shaft cavity of the brake and is connected thereto.

2. A wind turbine pitch motor with a front brake as claimed in claim 1, characterized in that: The front end of the motor body is connected with a mounting assembly, the brake is arranged in the mounting assembly, and the other end of the adapter shaft passes through the mounting assembly.

3. A wind turbine pitch motor with a front brake as claimed in claim 2, characterized in that: The mounting assembly includes an adapter flange and a connecting tube, one end of the connecting tube is connected to the adapter flange, and the other end is detachably connected to the front flange of the motor body, and the other end of the adapter shaft passes through the adapter flange and is rotatably connected thereto.

4. A wind turbine pitch motor with a front brake as claimed in claim 3, characterized in that: A positioning plate corresponding to the front flange of the motor body is provided at the other end of the connecting tube, and the positioning plate is detachably connected to the front flange of the motor body.

5. A wind turbine pitch motor with a front brake as claimed in claim 3, characterized in that: A plurality of heat dissipation ribs are arranged at intervals on the connecting tube.

6. A wind turbine pitch motor with a front brake as claimed in any one of claims 1 to 5, characterized in that: The adapter shaft is connected and fixed to the shaft extension of the motor body through a connecting piece, and a limiting piece is provided between the adapter shaft and the shaft extension of the motor body to limit the relative rotation of the two.

7. A wind turbine pitch motor with a front brake as claimed in claim 6, characterized in that: One end of the adapter shaft is provided with a connecting groove corresponding to the shaft extension of the motor body, and the shaft extension of the motor body is embedded in the connecting groove.

8. A wind turbine pitch motor with a front brake as claimed in claim 6, characterized in that: The connecting piece is a screw, the axial extension of the motor body is provided with a threaded hole, the adapter shaft is coaxially provided with a connecting hole, and the other end thereof is provided with a limiting hole corresponding to the head of the screw, the screw rod of the screw passes through the connecting hole and is threadedly installed in the threaded hole, and the screw is tightened until its head contacts the bottom wall of the limiting hole, so that the adapter shaft can be connected and fixed to the axial extension of the motor body.

9. A wind turbine pitch motor with a front brake as claimed in claim 6, characterized in that: The limiting member is a flat key, and the adapter shaft and the shaft extension of the motor body are respectively provided with a first groove and a second groove, the first groove and the second groove are spliced ​​into a limiting groove matching the flat key, and the flat key is arranged in the limiting groove.

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