CN206834935U - A kind of motor radiating structure of plant protection unmanned plane - Google Patents

Abstract

The utility model discloses a motor heat dissipation structure for plant protection drones, comprising a stator assembly, a rotor assembly and a motor main shaft, the stator assembly is movably connected to the rotor assembly through the motor main shaft, and the stator assembly includes a stator mounting seat, a heat dissipation connector, and a stator core and the bearing connector, the inner side of the stator mounting seat is fixedly connected to the heat dissipation connector, and a heat dissipation through hole is opened in the heat dissipation connector, and the heat dissipation connector is movably connected to the motor shaft through the bearing connector. leaf, the embedded fan blade is located in the cavity between the stator assembly and the rotor assembly; the heat dissipation structure of the motor of the plant protection drone can be accelerated by opening a heat dissipation through hole in the heat dissipation connector and installing the embedded fan blade. The air flow improves the heat dissipation efficiency, the overall structure design is reasonable, the overall cooling efficiency is good, and the heat dissipation efficiency is high, which can ensure that the motor can work efficiently and for a long time.

Description

A motor heat dissipation structure of plant protection UAV

technical field

The utility model relates to the technical field of plant protection drones, in particular to a motor heat dissipation structure of plant protection drones.

Background technique

With the wide application of UAV technology in agricultural plant protection, the requirements for motors that power UAVs are getting higher and higher, because the motor will generate a lot of heat when it is working, and the heat generated by the motor will affect the normal operation of its internal parts. When working in a high-temperature environment for a long time, not only the efficiency is low, but also the service life is affected, so it is necessary to dissipate the heat in time to ensure that the working temperature of the internal parts of the motor is normal, but the existing plant protection UAV motors are not very good. The unreasonable design of the heat dissipation structure of the existing plant protection UAV motor leads to poor overall heat dissipation efficiency, which affects flight stability.

Utility model content

The purpose of this utility model is to provide a motor heat dissipation structure of a plant protection drone, which has the advantages of reasonable structural design, can speed up air flow and improve heat dissipation efficiency, and solves the problems in the prior art.

In order to achieve the above purpose, the utility model provides the following technical solutions: a motor heat dissipation structure of a plant protection drone, including a stator assembly, a rotor assembly and a motor shaft, the stator assembly is movably connected to the rotor assembly through the motor shaft, and the stator assembly includes a stator Mounting seat, heat dissipation connector, stator core and bearing connector, the stator core is located on the inside of the rotor assembly, the inner wall of the stator core is fixedly connected to the stator mounting seat, and the inner side of the stator mounting seat is fixedly connected to the heat dissipation connector, said A heat dissipation through hole is opened in the heat dissipation connector, and a bearing connector is provided on the inner side of the heat dissipation connector. The embedded fan blade includes a fan blade mounting seat and a fan blade. The fan blade is fixedly connected to the outer side of the fan blade mounting seat. The fan blade is located in the cavity between the stator assembly and the rotor assembly. The rotor The assembly includes a mounting cover, a shell and a magnet. The center of the mounting cover is movably connected to the motor shaft, and the bottom edge of the mounting cover is fixedly connected to the magnet. The magnet is located outside the stator core.

Preferably, ventilation holes are opened on the installation cover.

Preferably, the fan blade is in a spiral shape, and the fan blade is located directly above the heat dissipation through hole.

Preferably, the top of the fan blade installation seat is fixedly connected with the installation cover.

Compared with the prior art, the beneficial effects of the utility model are as follows: the motor heat dissipation structure of the plant protection drone can speed up the air flow and improve Heat dissipation efficiency, the overall structure design is reasonable, the overall cooling efficiency is good, and the heat dissipation efficiency is high, which can ensure that the motor can work efficiently and for a long time.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic side view of the installation cover of the present invention;

Fig. 3 is a schematic cross-sectional view of the built-in fan blade of the present invention.

In the figure: 1 stator assembly, 11 stator mounting seat, 12 heat dissipation connector, 121 heat dissipation through hole, 13 stator core, 14 bearing connection piece, 2. rotor assembly, 21 installation cover, 211 ventilation hole, 22 shell, 23 magnet , 3 motor spindles, 4 embedded fan blades, 41 fan blade mounts, 42 fan blades.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1-3, a motor heat dissipation structure of a plant protection drone, including a stator assembly 1, a rotor assembly 2 and a motor shaft 3, the rotor assembly 2 is installed above the stator assembly 1, and the stator assembly 1 moves through the motor shaft 3 Connect the rotor assembly 2. When the rotor assembly 2 is working, it will rotate at a high speed, driving the propeller on its outer side to rotate. At the same time, the motor will generate a lot of heat. The heat generated by the motor will affect the normal operation of its internal parts. When the motor works in a high temperature environment for a long time, not only The efficiency is low, and it also affects the service life, so it is necessary to dissipate the heat in time to ensure the normal working temperature of the internal parts of the motor. The stator assembly 1 includes a stator mounting seat 11, a heat dissipation connector 12, a stator core 13 and a bearing connector 14 , the stator core 13 is located inside the rotor assembly 2, the inner wall of the stator core 13 is fixedly connected to the stator mounting base 11, and the inner side of the stator mounting base 11 is fixedly connected to the heat dissipation connector 12, and the heat dissipation connector 12 is not only used to connect the stator mounting The seat 11 and the bearing connector 14 can also play the role of auxiliary heat dissipation. The heat dissipation connector 12 is provided with a heat dissipation through hole 121, and the heat generated by the motor can be dissipated through the heat dissipation through hole 121. The inner side of the heat dissipation connector 12 is provided with The bearing connector 14, the heat dissipation connector 12 is movably connected to the motor shaft 3 through the bearing connector 14, the motor shaft 3 is connected to the rotor assembly 2, the outer side of the motor shaft 3 is provided with an embedded fan blade 4, and the rotor assembly 2 drives the inner The embedded fan blade 4 rotates at a high speed. When the embedded fan blade 4 rotates at a high speed, the air flow is driven to speed up the heat dissipation efficiency. The embedded fan blade 4 includes a fan blade mounting seat 41 and a fan blade 42. The top of the fan blade mounting seat 41 and The installation cover 21 is fixedly connected, that is, the rotor assembly 2 can drive the embedded fan blade 4 to rotate when it is working, and the fan blade 42 is fixedly connected to the outer side of the fan blade mounting seat 41. Directly above the hole 121, the fan blade 42 drives air to flow when it rotates, and the airflow driven by the fan blade 42 passes through the heat dissipation through hole 121. The fan blade 42 is located in the cavity between the stator assembly 1 and the rotor assembly 2. The rotor assembly 2 includes a mounting The cover 21, the shell 22 and the magnet 23, the installation cover 21 is provided with a ventilation hole 211, and the cold air outside the installation cover 21 flows into the motor from the ventilation hole 211, and while cooling the motor, it is driven by the fan blade 42 from the cooling channel. Outflow from the hole 121, the center of the mounting cover 21 is flexibly connected with the motor main shaft 3, the bottom edge of the mounting cover 21 is fixedly connected with the magnet 23, and the magnet 23 is positioned at the outside of the stator core 13.

The motor heat dissipation structure of the plant protection drone, the stator assembly 1 is movably connected to the rotor assembly 2 through the motor spindle 3, and the rotor assembly 2 drives the outer propeller to rotate when it is working, and generates a lot of heat at the same time. The heat generated by the motor affects the normal operation of its internal parts When the motor works in a high-temperature environment for a long time, not only the efficiency is low, but also the service life is affected, so the heat needs to be dissipated in time to ensure that the working temperature of the internal parts of the motor is normal, and a heat dissipation through hole is opened in the heat dissipation connector 12 121. The heat generated by the motor can be dissipated through the heat dissipation through hole 121. When the rotor assembly 2 is working, it drives the embedded fan blade 4 to rotate at a high speed. 42 drives the cold air outside the motor to flow into the motor from the ventilation hole 211, and flows out from the heat dissipation through hole 121 after cooling the motor. The structure design is reasonable, the overall cooling efficiency is good, and the heat dissipation efficiency is high.

To sum up: the motor heat dissipation structure of the plant protection drone can speed up the air flow and improve the heat dissipation efficiency by opening the heat dissipation through hole 121 in the heat dissipation connector 12 and installing the embedded fan blade 4, and the overall structure design is reasonable , the overall cooling efficiency is good, and the heat dissipation efficiency is high, which can ensure that the motor can work efficiently and for a long time.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (4)

1. a kind of motor radiating structure of plant protection unmanned plane, including stator module（1）, rotor assembly（2）And electric machine main shaft（3）, It is characterized in that：The stator module（1）Pass through electric machine main shaft（3）It is flexibly connected rotor assembly（2）, stator module（1）Including Stator installation seat（11）, radiating connector（12）, stator core（13）And bearing connection（14）, stator core（13）Positioned at turn Sub-component（2）Inner side, stator core（13）Inwall be fixedly connected with stator installation seat（11）, stator installation seat（11）Inner side While it is fixedly connected with radiating connector（12）, the radiating connector（12）In offer thermal vias（121）, radiate connector （12）Inner side be provided with bearing connection（14）, radiate connector（12）Pass through bearing connection（14）It is flexibly connected electric machine main shaft （3）, the electric machine main shaft（3）With rotor assembly（2）Connection, electric machine main shaft（3）Outside be provided with embedded fan blade（4）, it is described Embedded fan blade（4）Including flabellum mounting seat（41）And flabellum（42）, flabellum（42）It is fixedly connected with flabellum mounting seat（41）It is outer Side, flabellum（42）Positioned at stator module（1）With rotor assembly（2）Between cavity in, the rotor assembly（2）Covered including installation （21）, shell（22）And magnet（23）, installation lid（21）Center at and electric machine main shaft（3）It is flexibly connected, installation lid（21）'s Magnet is fixedly connected with bottom margin（23）, magnet（23）Positioned at stator core（13）Outside.

A kind of 2. motor radiating structure of plant protection unmanned plane according to claim 1, it is characterised in that：The installation lid （21）On offer air vent（211）.

A kind of 3. motor radiating structure of plant protection unmanned plane according to claim 1, it is characterised in that：The flabellum（42） In the shape of a spiral, flabellum（42）Positioned at thermal vias（121）Surface.

A kind of 4. motor radiating structure of plant protection unmanned plane according to claim 1, it is characterised in that：The flabellum installation Seat（41）Top with installation cover（21）It is fixedly connected.