Permanent magnet synchronous reluctance mower blade motor

Abstract

The utility model discloses a permanent magnet synchronous reluctance mower blade motor, and relates to the technical field of motors, the permanent magnet synchronous reluctance mower blade motor comprises a protective shell, the upper end face of the protective shell is fixedly connected with a driving motor, the interior of the protective shell is rotatably connected with a rotating frame, the rotating frame is internally provided with a blade main body, and the blade main body is fixedly connected with the driving motor. The lower end face of the protective shell is in lap joint with a fixing frame, the side face of the protective shell is fixedly connected with a discharging hopper, the driving motor is a permanent magnet synchronous reluctance motor, and the output end of the driving motor penetrates through the inner wall of the protective shell and is fixedly connected with the center of a rotating frame; the permanent magnet synchronous reluctance motor has the advantages that the permanent magnet synchronous reluctance motor can be used for flux-weakening control, the torque coefficient is high and the current is small at a low speed, the rotating speed can be improved by flux-weakening control when a high speed is needed, the operation is stable, the noise is low, the efficiency is high, the controller and the motor are integrated into a whole, and the wiring of a user is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a permanent magnet synchronous reluctance lawn mower blade motor. Background Art

[0002] In production and life, we cannot do without the role of mechanical equipment. Among them, the most widely used mechanical equipment is the motor. There are many types of mechanical equipment. Generally, they can be divided into ten categories according to their uses, mainly including power machinery, metal cutting machinery, metal forming machinery and agricultural machinery. Among them, the lawn mower is a kind of agricultural machinery.

[0003] The blade motors currently used in the market are mainly brushless DC motors. Their disadvantages are that they cannot perform weak magnetic control, have large starting current, high noise, high vibration, low maximum speed, low efficiency, and the motor and controller are installed separately, which makes it complicated for users to use. For this reason, we propose a permanent magnet synchronous reluctance lawn mower blade motor. Utility Model Content

[0004] The utility model aims to provide a permanent magnet synchronous reluctance lawn mower blade motor.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a permanent magnet synchronous reluctance lawn mower blade motor, comprising a protective shell, the upper end face of the protective shell is fixedly connected to a drive motor, the interior of the protective shell is rotatably connected to a rotating frame, a blade body is arranged in the rotating frame, the lower end face of the protective shell is overlapped with a fixed frame, the side of the protective shell is fixedly connected to a discharge hopper, the drive motor is configured as a permanent magnet synchronous reluctance motor, and the output end of the drive motor passes through the inner wall of the protective shell and is fixedly connected to the center of the rotating frame.

[0006] As a further solution of the present invention: one end of the discharge hopper is connected to the inside of the protective shell, and the inner wall of the discharge hopper is configured to be arc-shaped.

[0007] As a further solution of the present invention: the size of the rotating frame matches the size of the inner wall of the protective shell, and the lower end surface of the blade body is rotatably connected to the upper end surface of the fixed frame.

[0008] As a further solution of the present invention: the size of the blade body matches the size of the inner wall of the rotating frame.

[0009] As a further solution of the present invention: the fixing frame and the protective shell are threadedly connected to each other with a first threaded rod.

[0010] As a further solution of the present invention: the inner common thread connection between the rotating frame and the blade body is provided with a second threaded rod.

[0011] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. This utility model uses a permanent magnet synchronous reluctance motor that can perform magnetic weakening control. At low speed, the torque coefficient is high and the current is small. When high speed is required, magnetic weakening control can be used to increase the speed. It runs smoothly, has low noise and high efficiency. The controller and motor are integrated into one, which is convenient for users to connect.

[0013] 2. The utility model drives the blade body to rotate through the rotating frame. When the blade body rotates, the weeds extending into the protective shell can be cut off through the fixed frame. At the same time, when the rotating frame rotates, the weeds remaining on the inner wall of the protective shell can be thrown into the discharging hopper for discharging, which can prevent a large amount of weeds from remaining in the protective shell.

[0014] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the protective shell in an embodiment of the present utility model;

[0017] Figure 3 This is a schematic structural diagram of a fixing frame in an embodiment of the present utility model;

[0018] Figure 4 This is a schematic structural diagram of a rotating frame in an embodiment of the present utility model;

[0019] Figure 5 This is a schematic structural diagram of the blade body in an embodiment of the present utility model;

[0020] Figure 6 It is a schematic cross-sectional structural diagram of the discharge hopper in an embodiment of the present utility model.

[0021] In the figure: 1. Protective shell; 2. Drive motor; 3. Discharge hopper; 4. Fixed frame; 5. Rotating frame; 6. Blade body; 7. First threaded rod; 8. Second threaded rod. DETAILED DESCRIPTION

[0022] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0023] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Please see the attached Figure 1 -Attached Figure 6 The blade motor of the permanent magnet synchronous reluctance lawn mower of the present invention includes a protective shell 1, the upper end face of the protective shell 1 is fixedly connected to the drive motor 2, the internal rotation of the protective shell 1 is connected to the rotating frame 5, the blade body 6 is arranged in the rotating frame 5, the lower end face of the protective shell 1 is overlapped with the fixed frame 4, the side of the protective shell 1 is fixedly connected to the discharge hopper 3, the drive motor 2 is configured as a permanent magnet synchronous reluctance motor, the output end of the drive motor 2 passes through the inner wall of the protective shell 1 and is fixedly connected to the center of the rotating frame 5, the size of the blade body 6 matches the size of the inner wall of the rotating frame 5, the fixed frame 4 and the protective shell 1 are commonly threadedly connected to a first threaded rod 7, and the rotating frame 5 and the blade body 6 are commonly threadedly connected to a second threaded rod 8. The second threaded rod 8 can facilitate the staff to disassemble, repair and replace the blade body 6, which can avoid the blade body 6 from being worn out after long-term work.

[0025] In the first embodiment, one end of the discharge hopper 3 is connected to the interior of the protective shell 1, and the inner wall of the discharge hopper 3 is configured to be arc-shaped;

[0026] Specifically, when the rotating frame 5 rotates rapidly, the weeds remaining in the protective shell 1 can be thrown into the discharge hopper 3 by centrifugal force for discharge, and the weeds can be discharged directly to the ground through the arc-shaped outlet of the discharge hopper 3 to avoid being thrown around.

[0027] In the second embodiment, the size of the rotating frame 5 matches the size of the inner wall of the protective shell 1, and the lower end surface of the blade body 6 is rotatably connected to the upper end surface of the fixed frame 4;

[0028] Specifically, the blade body 6 can cooperate with the fixing frame 4 to cut the weeds when rotating, and the blade body 6 can also perform the mowing operation normally when the speed is low.

[0029] Working principle:

[0030] First, the staff can install the entire device on a mobile device during work, and then the staff can drive the entire device to move on the grass. When moving, the staff can start the driving motor 2 to drive the rotating frame 5 to rotate, and the rotating frame 5 drives the blade body 6 to rotate, and the blade body 6 can cut off the weeds extending into the protective shell 1. The cut weeds can be thrown into the discharge hopper 3 through the rotating frame 5 for discharge, which can avoid a large amount of weeds remaining in the protective shell 1 and causing the blade body 6 to be unable to work normally. After mowing, the staff can also remove the fixed frame 4 and the blade body 6 through the first threaded rod 7 and the second threaded rod 8 for maintenance, which can increase the service life of the equipment. At this point, the entire work process is completed.

[0031] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the scope of protection of the present invention.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0034] For those skilled in the art, it is possible to make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of the present invention, and they still fall within the scope of protection of the present invention.

Claims

1. A permanent magnet synchronous reluctance lawn mower blade motor, comprising a protective housing (1), characterized in that: The upper end surface of the protective shell (1) is fixedly connected to a drive motor (2), the interior of the protective shell (1) is rotatably connected to a rotating frame (5), a blade body (6) is arranged in the rotating frame (5), the lower end surface of the protective shell (1) is overlapped with a fixed frame (4), the side of the protective shell (1) is fixedly connected to a discharge hopper (3), the drive motor (2) is configured as a permanent magnet synchronous reluctance motor, and the output end of the drive motor (2) passes through the inner wall of the protective shell (1) and is fixedly connected to the center of the rotating frame (5).

2. The permanent magnet synchronous reluctance lawn mower blade motor according to claim 1, characterized in that: One end of the discharge hopper (3) is in communication with the interior of the protective shell (1), and the inner wall of the discharge hopper (3) is arranged in an arc shape.

3. The permanent magnet synchronous reluctance lawn mower blade motor according to claim 1, characterized in that: The size of the rotating frame (5) matches the size of the inner wall of the protective shell (1), and the lower end surface of the blade body (6) is rotatably connected to the upper end surface of the fixed frame (4).

4. The permanent magnet synchronous reluctance lawn mower blade motor according to claim 1, characterized in that: The size of the blade body (6) matches the size of the inner wall of the rotating frame (5).

5. The permanent magnet synchronous reluctance lawn mower blade motor according to claim 1, characterized in that: The fixing frame (4) and the protective shell (1) are threadedly connected to a first threaded rod (7).

6. The permanent magnet synchronous reluctance lawn mower blade motor according to claim 1, characterized in that: The rotating frame (5) and the blade body (6) are connected to each other through an internal common threaded connection with a second threaded rod (8).

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