High-integration-level variable-pitch motor

Abstract

The utility model relates to a high-integration-level variable-pitch motor, and the motor comprises a housing which comprises a motor housing, a brake housing, and a connecting end cover. The motor assembly is arranged in the motor shell; the brake is arranged in the brake shell; the main shaft is in transmission connection with the motor assembly and the brake; the encoder is arranged at the end part of the main shaft and is connected with the end surface of the brake through a mounting plate; the mounting plate comprises a first radial annular plate connected with the end face of the brake through a connecting piece; the second radial annular plate is arranged at an inner hole of the brake, and the inner hole of the second radial annular plate is connected with an encoder; the connecting cylinder is connected with the first radial annular plate and the second radial annular plate; the inner hole space of the brake is fully utilized, the encoder is arranged at the inner hole of the brake through the mounting plate, and the right end face of the encoder is flush with the right end face of the brake, so that the axial length of a brake shell can be shortened, and meanwhile, the axial length of the whole shell is shortened.

Description

Technical Field

[0001] This utility model relates to a pitch motor, and more particularly to a highly integrated pitch motor. Background Technology

[0002] Pitch motors can be used in wind turbine generators to control the rotation of the corresponding blades, thereby changing the windward side of the blades and enabling the blades to revolve.

[0003] The pitch motor drives the main shaft to rotate through the motor assembly. When the main shaft needs to stop, it is achieved by a brake. The encoder at the end of the main shaft is used to detect the number of rotations of the main shaft. In the Chinese patent with publication number CN218040991U, entitled "A Pitch Motor and Wind Turbine Generator", it is disclosed that the right end of the brake is connected to the encoder via an annular connecting plate. In this way, the encoder protrudes from the right end of the brake, which increases the axial length of the brake housing and ultimately increases the overall axial length of the housing.

[0004] In summary, how to shorten the axial length of the housing and improve the integration of the pitch motor has become an urgent problem for researchers in this field. Utility Model Content

[0005] The technical problem to be solved by this utility model is: how to shorten the axial length of the housing and improve the internal integration of the pitch motor;

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model relates to a highly integrated pitch motor, comprising: a housing, including a motor housing, a brake housing, and a connecting end cover connecting the motor housing and the brake housing; a motor assembly disposed within the motor housing; a brake disposed within the brake housing; a main shaft, which is drively connected to the motor assembly and the brake; an encoder disposed at the end of the main shaft and connected to the end face of the brake via a mounting plate; wherein the mounting plate comprises: a first radial ring plate, which is connected to the end face of the brake via a connector; a second radial ring plate, which is disposed at the inner hole of the brake, and the encoder is connected to the inner hole; and a connecting cylinder, one end of which is connected to the inner hole of the first radial ring plate, and the other end of which is connected to the outer peripheral wall of the second radial ring plate.

[0008] Furthermore, the end face of the encoder is coplanar with the end face of the brake.

[0009] Furthermore, a first stepped groove is provided at the inner hole of the second radial ring plate;

[0010] The encoder outer peripheral wall is provided with a second step groove that matches the first step groove, and the encoder outer peripheral wall is provided with a limit groove radially inward.

[0011] A retaining spring is provided in the limiting groove, and one end face of the retaining spring is attached to the end face of the second radial ring plate and connected by a locking member.

[0012] Furthermore, the first radial ring plate is connected to the end face of the brake by bolts.

[0013] Furthermore, the outer diameter of the second radial ring plate and the outer diameter of the second connecting cylinder are matched with the inner diameter of the brake.

[0014] The beneficial effects of this utility model are as follows: This utility model is a highly integrated pitch motor that makes full use of the inner hole space of the brake. The encoder is placed in the inner hole of the brake through the mounting plate. At this time, the right end face of the encoder is flush with the right end face of the brake. At the same time, the axial length of the brake housing can be shortened. Only a space for the encoder wiring harness to pass through needs to be left between the inner side of the brake housing and the brake. This design shortens the axial length of the entire housing while improving the integration of the pitch motor. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a cross-sectional view of the present invention;

[0017] Figure 2 yes Figure 1 Enlarged view of point A in the image;

[0018] Figure 3 This is a structural diagram of the mounting plate. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0020] In order to shorten the axial length of the housing and improve the internal integration of the pitch motor, this application provides the following embodiments;

[0021] This embodiment is a highly integrated pitch motor, see [link to documentation]. Figure 1In the diagram, housing 1 from left to right consists of motor housing 11, connecting end cover 12, and brake housing 13. Connecting end cover 12 connects motor housing 11 and brake housing 13. Motor housing 11 houses motor assembly 3, which includes stator assembly, rotor assembly, etc. Motor assembly 3 drives spindle 2 to rotate. The right side of spindle 2 is connected to brake 4, which is installed inside brake housing 13. Encoder 5 is connected to the right end of spindle 2, and encoder 5 is connected to the right end face of brake 4 via mounting plate 6. (See also...) Figure 2 , Figure 3 The first radial ring plate 61 in the mounting plate 6 is connected to the right end face of the brake 4 by bolts. The second radial ring plate 62 in the mounting plate 6 is located in the inner hole of the brake 4. The encoder 5 is connected to the second radial ring plate 62. The first radial ring plate 61 and the second radial ring plate 62 are connected by a connecting cylinder 63. In this way, the inner hole space of the brake 4 is fully utilized, and the encoder 5 is placed in the inner hole of the brake 4 through the mounting plate 6. At this time, the right end face of the encoder 5 is flush with the right end face of the brake 4. At the same time, the axial length of the brake housing 13 can be shortened. Only a space for the encoder 5 wiring harness to pass through is needed between the inner side of the brake housing 13 and the brake 4. This setting shortens the axial length of the entire housing 1 while improving the integration of the pitch motor.

[0022] See Figure 2 In some possible embodiments, a first stepped groove 64 is provided at the inner hole of the second radial ring plate 62; a second stepped groove 65 matching the first stepped groove 64 is provided on the outer peripheral wall of the encoder 5, and a limiting groove is formed radially inward on the outer peripheral wall of the encoder 5; a retaining spring 66 is provided in the limiting groove, and one end face of the retaining spring 66 abuts against the end face of the second radial ring plate 62 by a bolt 67.

[0023] In this embodiment, the first stepped groove 64 and the second stepped groove 65 cooperate to restrict the encoder 5 from acting to the left relative to the second radial ring plate 62; the retaining spring 66 cooperates with the limiting groove, and the retaining spring 66 is fixed to the right end face of the second radial ring plate 62 by bolts 67. At this time, the left end face of the retaining spring 66 is in contact with the right end face of the second radial ring plate 62, which can restrict the encoder 5 from acting to the right relative to the second radial ring plate 62; through the above cooperation, the second radial ring plate 62 and the encoder 5 can be connected in a limiting manner.

[0024] See Figure 1 In some possible embodiments, the outer diameter of the second radial ring plate 62 and the outer diameter of the connecting cylinder 63 are matched with the inner diameter of the brake 4;

[0025] In this embodiment, the above-mentioned arrangement enables the second radial ring plate 62 and the connecting cylinder 63 to be placed in the inner hole of the brake 4 without interfering with the brake 4.

[0026] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A highly integrated pitch motor, characterized in that, include: The housing includes a motor housing, a brake housing, and a connecting end cover connecting the motor housing and the brake housing; A motor assembly, which is disposed within the motor housing; A brake, which is housed within the brake housing; a main shaft, which is connected to the motor assembly and the brake drive; An encoder is disposed at the end of the main shaft and is connected to the end face of the brake via a mounting plate; The mounting plate includes: A first radial annular plate is connected to the end face of the brake via a connector; A second radial ring plate is disposed at the inner hole of the brake, and the encoder is connected to the inner hole of the plate. The connecting cylinder has one end connected to the inner hole of the first radial ring plate and the other end connected to the outer peripheral wall of the second radial ring plate.

2. The highly integrated pitch motor according to claim 1, characterized in that, The end face of the encoder is coplanar with the end face of the brake.

3. The highly integrated pitch motor according to claim 1, characterized in that, A first stepped groove is provided at the inner hole of the second radial ring plate; The encoder outer peripheral wall is provided with a second step groove that matches the first step groove, and the encoder outer peripheral wall is provided with a limit groove radially inward. A retaining ring is provided in the limiting groove, and one end face of the retaining ring is attached to the end face of the second radial ring plate and connected by a locking member.

4. The highly integrated pitch motor according to claim 1, characterized in that, The first radial ring plate is connected to the end face of the brake by bolts.

5. A highly integrated pitch motor according to claim 1, characterized in that, The outer diameter of the second radial ring plate and the outer diameter of the connecting cylinder are matched with the inner diameter of the brake.

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