CN218124460U

CN218124460U - Power transmission and supporting structure of direct current motor

Info

Publication number: CN218124460U
Application number: CN202222031404.XU
Authority: CN
Inventors: 张天星
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-12-23
Anticipated expiration: 2032-08-03

Abstract

The utility model discloses a direct current motor's power transmission and supporting structure, including protecgulum and hou gai, be provided with iron core, winding and magnet between protecgulum and back lid, be equipped with main axis of rotation at the center of iron core, main axis of rotation is provided with plane thrust bearing with the junction of protecgulum, and main axis of rotation is provided with tapered roller bearing, angle thrust ball bearing or deep groove ball bearing with the junction of back lid. The utility model discloses a structure has mainly changed the bearing structure of axle through the front and back both ends bearing, has improved the lubricated mode of main axis of rotation, and the restriction has prevented vertical cluster of main axis of rotation and runout, has prolonged motor life, has reduced motor operation noise to improve electric fan operation life, made the electric fan become the silence operation.

Description

Power transmission and supporting structure of direct current motor

Technical Field

The utility model belongs to the technical field of fan motor, concretely relates to direct current motor's power transmission and bearing structure.

Background

A dc motor is a motor that converts dc electrical energy into mechanical energy. The speed-regulating device is widely applied to electric traction due to good speed-regulating performance. The rotor of the DC motor comprises an armature core, an armature winding, a commutator, a shaft and the like, and can generate rotary motion under the driving of a rotating magnetic field generated by a stator winding when the rotor works, so that the driving purpose is realized.

The motor bearing is a core component of the motor, is a transmission mode for converting electric energy into kinetic energy, and directly influences the service life, safety and quietness of the motor. The traditional motor for the fan uses an oil-containing bearing to support a transmission shaft, so that the motor has short service life, high noise and poor safety.

Therefore, it is desirable to provide a structure of a dc motor to solve the above problems.

Disclosure of Invention

The utility model aims to solve the technical problem that through the bearing support of motor spindle with the difference, make turning to of axle float and radial swing obtain reasonable control, the life and the quietness of motor obtain improving.

In order to solve the technical problem, the utility model discloses a technical scheme be: the traditional motor oil-containing direct friction bearing is changed into a plane ball bearing, an angular thrust roller bearing, an angular thrust ball bearing and a deep groove bearing.

The wind blade end of the transmission shaft adopts a roller thrust bearing, an angular thrust bearing and a deep groove bearing, and the tail end of the transmission shaft adopts a plane thrust bearing.

An iron core, a winding and other electromagnetic systems are respectively arranged between the two bearings, and the two bearings are externally connected with a control system and a power supply system.

Realize the technical scheme of the utility model is a DC motor's power transmission and supporting structure, including protecgulum and hou gai, be provided with iron core, winding and magnet between protecgulum and hou gai, be equipped with main axis of rotation at the center of iron core, main axis of rotation is provided with plane thrust bearing with the junction of hou gai, main axis of rotation is provided with tapered roller bearing, angle thrust ball bearing or deep groove ball bearing with the junction of protecgulum.

Further, the tapered roller bearing comprises a middle ring and an external ring, the external ring is a circular truncated cone-shaped ring body with the upper end diameter smaller than the lower end diameter, vertical grooves are formed in the external ring at equal intervals, vertical rolling shafts are arranged between the middle ring and the external ring, and the outer sides of the vertical rolling shafts are located in the vertical grooves.

Further, the plane thrust bearing comprises an upper ring and a lower ring, a roller is arranged between the upper ring and the lower ring, and two ends of the roller are respectively positioned on the outer side surface of the upper ring and the inner side surface of the lower ring.

Further, the plane thrust bearing comprises an upper circular ring and a lower circular ring, and balls are arranged between the upper circular ring and the lower circular ring.

The utility model discloses has positive effect: the utility model discloses a structure sets up rationally, both ends bearing around through, the bearing structure of axle has been changed, the lubricated mode of main axis of rotation has been improved, the restriction has prevented vertical cluster and the runout of main axis of rotation, it is in the use, and cooperate through plane thrust bearing and tapered roller bearing and restricted the upper and lower drunkenness of motor, tapered roller bearing can be upwards with the gravity decomposition of fan simultaneously, downward and outside effort, motor service life has been prolonged, motor operation noise has been reduced, thereby electric fan service life has been improved, make the electric fan become the silence operation, improve use comfort and stability, the suitability is strong and the practicality is good.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the following specific embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the stress condition of the tapered roller bearing of the present invention;

fig. 3 is an enlarged schematic structural view of the midplane thrust bearing of the present invention;

fig. 4 is another schematic structural diagram of the midplane thrust bearing of the present invention;

fig. 5 is another schematic structural view of the tapered roller bearing according to the present invention.

Reference numerals: the magnetic bearing comprises a front cover 1, a rear cover 2, an iron core 3, a winding 4, a magnet 5, a main rotating shaft 6, a plane thrust bearing 7, an upper ring 71, a lower ring 72, rollers 73, a front cover 74, a rear cover 75, a ball shaft body 76, a tapered roller bearing 8, a middle ring 81, an external ring 82, a vertical groove 83 and a vertical roller 84.

Detailed Description

(example 1)

The technical solution is further described with reference to fig. 1 to 3 of the above specification, which are as follows:

referring to fig. 1 to 3, a power transmission and support structure of a dc motor includes a front cover 1 and a rear cover 2, an iron core 3, a winding 4 and a magnet 5 are disposed between the front cover and the rear cover, and a main rotation shaft 6 is disposed at the center of the iron core, which is a structure of the prior art in the present embodiment, and is not described in detail since it is described in the background patent, a flat thrust bearing 7 is disposed at the connection between the main rotation shaft and the rear cover, and a tapered roller bearing 8, an angular thrust ball bearing or a deep groove ball bearing is disposed at the connection between the main rotation shaft and the front cover.

The tapered roller bearing 8 comprises a middle ring 81 and an external ring 82, the external ring is a circular table-shaped ring body of which the upper end diameter is smaller than the lower end diameter, vertical grooves 83 are formed in the external ring at equal intervals, vertical rollers 84 are arranged between the middle ring and the external ring, and the outer sides of the vertical rollers are located in the vertical grooves. In this embodiment, the inclination angle of the circumscribed circle is 10 to 15 degrees. The height of the vertical grooves of the vertical rolling shafts is the same. Its external ring sets up to round platform form ring body to it in the use, can be with the gravity decomposition of fan for upwards, downward and outside effort, is favorable to reducing wear, thereby reduces the noise, improves use comfort.

The plane thrust bearing 7 comprises an upper ring 71 and a lower ring 72, a roller 73 is arranged between the upper ring and the lower ring, and two ends of the roller are respectively positioned on the outer side surface of the upper ring and the inner side surface of the lower ring. In the embodiment, the plane thrust bearing can decompose the gravity of the fan into upward and downward acting forces through the roller, thereby being beneficial to reducing abrasion and prolonging the service life.

The utility model discloses a structure sets up rationally, both ends bearing around through, the bearing structure of axle has been changed, the lubricated mode of main axis of rotation has been improved, the restriction has prevented vertical cluster and the runout of main axis of rotation, it is in the use, and cooperate through plane thrust bearing and tapered roller bearing and restricted the upper and lower drunkenness of motor, tapered roller bearing can be upwards with the gravity decomposition of fan simultaneously, downward and outside effort, motor service life has been prolonged, motor operation noise has been reduced, thereby electric fan service life has been improved, make the electric fan become the silence operation, improve use comfort and stability, the suitability is strong and the practicality is good.

(example 2)

As shown in fig. 4, this embodiment is substantially the same as embodiment 1, except that: the flat thrust bearing 7 includes a front cover 74 and a rear cover 75, and a ball shaft body 76 between the front cover and the rear cover.

(example 3)

As shown in fig. 5, this embodiment is substantially the same as embodiment 1, except that: in the embodiment, the tapered roller bearing is replaced by a thrust ball bearing, and in the practical application process, the tapered roller bearing can also be a deep groove ball shaft or a bearing which is similar to the bearing and is stressed and cut in the axial direction and the radial direction simultaneously.

The standard parts used in the present embodiment can be purchased directly from the market, and the non-standard structural parts described in the specification can also be obtained directly by processing according to the common general knowledge of the prior art without any doubt, and the connection mode of the parts adopts the conventional means matured in the prior art, and the machines, parts and equipment adopt the conventional models in the prior art, so that the detailed description is not given here.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. The utility model provides a direct current motor's power transmission and bearing structure, includes protecgulum and hou gai, is provided with iron core, winding and magnet between protecgulum and hou gai, is equipped with main axis of rotation, its characterized in that at the center of iron core: the connecting part of the main rotating shaft and the rear cover is provided with a plane thrust bearing, and the connecting part of the main rotating shaft and the front cover is provided with a tapered roller bearing, an angular thrust ball bearing or a deep groove ball bearing.

2. The power transmission and support structure of a direct current motor according to claim 1, characterized in that: the tapered roller bearing comprises a middle ring and an external ring, wherein the external ring is a circular truncated cone-shaped ring body of which the upper end diameter is smaller than the lower end diameter, vertical grooves are formed in the external ring at equal intervals, vertical rollers are arranged between the middle ring and the external ring, and the outer sides of the vertical rollers are located in the vertical grooves.

3. The power transmission and support structure of a direct current motor according to claim 2, characterized in that: the plane thrust bearing comprises an upper circular ring and a lower circular ring, a roller is arranged between the upper circular ring and the lower circular ring, and two ends of the roller are respectively positioned on the outer side surface of the upper circular ring and the inner side surface of the lower circular ring.

4. A power transmission and support structure of a direct current motor according to claim 3, characterized in that: the plane thrust bearing comprises a front cover, a rear cover and a ball shaft body between the front cover and the rear cover.