Low temperature rise motor with high heat radiation capability
Technical Field
The utility model relates to the technical field of motors, in particular to a low-temperature-rise motor with high heat dissipation capacity.
Background
With the increasingly outstanding economic development and energy problems, the low-speed permanent magnet synchronous motor technology is gradually mature and widely applied, on one hand, the technology of the variable frequency permanent magnet motor is promoted by China to realize energy conservation and consumption reduction, and on the other hand, the performance requirements of various industries on the motor are continuously improved, such as the motor with the characteristics of low speed, large torque, simple structure, high power factor, high efficiency, small volume, low noise, high reliability and the like.
In the existing motor, the cooling fan is directly connected with the motor rotating shaft, when the motor runs at a low speed, the fan rotates at a lower speed, so that the cooling air quantity is insufficient, the problem of poor cooling capacity can occur, however, the motor can generate more heat due to various reasons, the cooling requirement of the low-speed working condition is not fully considered when the motor is partially designed, and the like, the internal temperature of the motor can be rapidly increased due to the factors, if the motor runs at a low speed for a long time and the cooling is poor, the performance and the service life of the motor can be influenced, and even the motor can be damaged due to overheating.
Disclosure of utility model
In order to overcome the problems of low rotating speed and poor heat radiation capability of a fan under low-speed operation caused by direct connection of a heat radiation fan and a motor rotating shaft of the existing motor, the utility model provides the low-temperature-rise motor with high heat radiation capability.
The technical scheme of the utility model is as follows:
The low-temperature-rise motor with high heat radiation capability comprises a motor body, a heat radiation assembly and a protective cover, wherein the heat radiation assembly is arranged at the rear end of the motor body, the protective cover is arranged on the outer side of the heat radiation assembly, the heat radiation assembly comprises a driving gear, a rotating shaft frame, a driven gear shaft, an accelerating gear, a fan gear shaft and a heat radiation fan, the driving gear is arranged on a rotating shaft of the motor body, the rotating shaft frame is fixedly connected with the rear end of the motor body, the driven gear shaft is rotatably connected with the rotating shaft frame and is in transmission connection with the driving gear to form a vertical shaft transmission accelerating mechanism, the accelerating gear is fixedly arranged on the driven gear shaft and is in transmission connection with the fan gear shaft to form a vertical shaft transmission accelerating mechanism, and the heat radiation fan is fixedly arranged at the rear part of the fan gear shaft. Through adopting above-mentioned setting, during the motor work, the motor shaft drives drive gear and rotates, and drive gear drives radiator fan fast rotation through two sets of vertical axis transmission acceleration mechanism, realizes high-efficient heat dissipation.
In the low-temperature-rise motor with high heat dissipation capacity, the motor body comprises a housing, a base and heat dissipation fins, wherein the base is arranged on two sides of the bottom of the housing, the heat dissipation fins are arranged on the surface of the housing in groups, and the housing, the base and the heat dissipation fins are integrally formed. Therefore, the heat-resistant radiator has high structural strength, and the heat resistance between the radiating fins and the casing is small, so that the heat dissipation is facilitated.
In the low-temperature-rise motor with high heat dissipation capacity, the rotating shaft frame is fixedly connected with the shell through bolts. The rotating shaft frame is fixed by the bolts, so that the connecting strength is high, and the implementation is easy.
Further, in the foregoing low temperature rise motor with high heat dissipation capability, in order to reduce friction, both ends of the driven gear shaft are connected with bearings on the spindle bracket.
Further, in the low temperature rise motor with high heat dissipation capability, the axis of the fan gear shaft coincides with the axis of the rotating shaft of the motor body. Therefore, the design of maximizing the size of the cooling fan can be realized, and the large air quantity can be obtained.
In the low-temperature-rise motor with high heat dissipation capacity, the protective cover comprises a protective cover body, and the protective cover body is fixedly connected with the shell through screws. At this time, not only the reliability is high, but also the implementation is easy.
Further, in the low temperature rise motor with high heat dissipation capability, the heat dissipation fins are arranged along the axial direction of the motor and are uniformly distributed in groups in the circumferential direction. The heat radiation fins are arranged along the axial direction of the motor to facilitate air circulation, thereby facilitating heat radiation. And the front end of the protective cover body is provided with guide strips in groups corresponding to the radiating fins, and the guide strips are embedded into gaps between two adjacent radiating fins to form an airflow channel. Therefore, when the motor works, cold air generated by the cooling fan flows along the airflow channel, and the heat exchange effect is better.
Compared with the prior art, the heat dissipation assembly with a specific structure is arranged, the motor rotating shaft is utilized to drive the driving gear to rotate, the rotating driving gear drives the driven gear shaft and the accelerating gear to rotate, and the rotating accelerating gear drives the fan gear shaft to rotate, so that the rotation of the heat dissipation fan connected with the fan gear shaft is realized, and the heat dissipation fan can still keep high rotating speed even when the motor rotates at a low speed due to the fact that the gear transmission process has two accelerations, and the efficient heat dissipation function of the motor is realized.
Drawings
Fig. 1 is a schematic diagram of the overall side view and three-dimensional structure of a motor according to embodiment 1 of the present utility model;
FIG. 2 is a schematic view of the whole bottom perspective structure of embodiment 1 of the present utility model;
fig. 3 is a schematic perspective view of a motor body and heat dissipation assembly according to embodiment 1 of the present utility model;
FIG. 4 is a schematic view of the overall exploded perspective structure of embodiment 1 of the present utility model;
fig. 5 is a schematic diagram showing the overall side view and three-dimensional structure of a motor according to embodiment 2 of the present utility model.
The drawing comprises a motor body 1, a protective cover 2, a heat dissipation assembly 3, a machine shell 101, a machine base 102, a heat dissipation fin 103, a protective cover 201, a protective cover body 202, a flow guide strip 301, a driving gear 302, a rotating shaft frame 303, a driven gear shaft 304, an accelerating gear 305, a fan gear shaft 306 and a heat dissipation fan.
Detailed Description
The utility model is described in detail below with reference to the drawings and the specific embodiments, but is not to be construed as limiting the utility model.
Example 1:
1-4, the low-temperature-rise motor with high heat radiation capacity comprises a motor body 1, a heat radiation assembly 3 and a protective cover 2, wherein the heat radiation assembly 3 is arranged at the rear end of the motor body 1, the protective cover 2 is arranged at the outer side of the heat radiation assembly 3, the heat radiation assembly 3 comprises a driving gear 301, a rotating shaft frame 302, a driven gear shaft 303, an accelerating gear 304, a fan gear shaft 305 and a heat radiation fan 306, the driving gear 301 is arranged on a rotating shaft of the motor body 1, the rotating shaft frame 302 is fixedly connected with the rear end of the motor body 1, the driven gear shaft 303 is rotatably connected with the rotating shaft frame 302 and is in transmission connection with the driving gear 301 to form a vertical shaft transmission accelerating mechanism, the accelerating gear 304 is fixedly arranged on the driven gear shaft 303 and is in transmission connection with the fan gear shaft 305 to form a vertical shaft transmission accelerating mechanism, and the heat radiation fan 306 is fixedly arranged at the rear part of the fan gear shaft 305.
In the embodiment, the motor body 1 comprises a casing 101, a base 102 and heat dissipation fins 103, wherein the base 102 is arranged on two sides of the bottom of the casing 101, the heat dissipation fins 103 are arranged on the surface of the casing 101 in groups, and the casing 101, the base 102 and the heat dissipation fins 103 are integrally formed.
In an embodiment, the rotating shaft frame 302 is fixedly connected with the casing 101 through bolts.
In an embodiment, two ends of the driven gear shaft 303 are connected to bearings on the rotating shaft frame 302.
In an embodiment, the axis of the fan gear shaft 305 coincides with the axis of the rotation shaft of the motor body 1.
In the embodiment, the protective cover 2 comprises a protective cover body 201, and the protective cover body 201 is fixedly connected with the machine shell 101 through screws.
In an embodiment, the heat dissipation fins 103 are disposed along the axial direction of the motor and are uniformly distributed in groups in the circumferential direction. Corresponding to the heat radiation fins 103, the front end of the protective cover body 201 is provided with a guide strip 202 in groups, and the guide strip 202 is embedded into a gap between two adjacent heat radiation fins 103 to form a heat radiation air passage of high-speed air flow.
When the motor is used, the rotating shaft of the motor body 1 drives the gear 301 to rotate, the rotating driving gear 301 drives the driven gear shaft 303 and the accelerating gear 304 to rotate to realize first acceleration, the rotating accelerating gear 304 drives the fan gear shaft 305 to rotate to realize second acceleration, and therefore the rotation of the cooling fan 306 connected with the fan gear shaft 305 is realized, and the motor can still keep high rotation speed even when the motor rotates at a low speed due to the fact that the gear transmission process has twice acceleration, and efficient cooling is realized.
Example 2
On the basis of embodiment 1, as shown in fig. 5, in embodiment 2, a protective cover body 201 is fixedly connected with a casing 101 through screws, corresponding to heat dissipation fins 103, guide strips 202 are arranged at the front end of the protective cover body 201 in groups, and the guide strips 202 are embedded into gaps between two adjacent heat dissipation fins 103 to form an air flow channel.
In embodiment 2, the protective cover body 201 is used to protect the structure of the heat dissipating component 3, so as to improve the anti-collision performance, and the air guide strips 202 are embedded in the gaps between the heat dissipating fins 103, so that the cold air flows along the air flow channel, and the heat exchanging effect is good.
The above general description of the utility model and the description of specific embodiments thereof in relation to the present utility model should not be construed as limiting the scope of the utility model. Those skilled in the art can add, subtract or combine the features disclosed in the foregoing general description and/or the detailed description (including examples) to form other technical solutions within the scope of the utility model without departing from the disclosure of the utility model.