CN210629266U

CN210629266U - Air-cooled vibrating motor

Info

Publication number: CN210629266U
Application number: CN201922248072.9U
Authority: CN
Inventors: 吴振军; 耿丽霞
Original assignee: Zhengzhou University of Light Industry
Current assignee: Zhengzhou University of Light Industry
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-05-26
Anticipated expiration: 2029-12-16

Abstract

The utility model relates to an air-cooled vibrating motor belongs to the material and carries the equipment field. The vibration motor is widely applied to vibration equipment, but has the problem of burning a bearing and a coil at high temperature. The utility model provides an air-cooled vibrating motor, its eccentric block of taking the fan blade is installed at the motor shaft both ends, and the fan blade is straight board-like fan blade, is 45 degrees angles along the radial parallel arrangement of motor shaft with the motor shaft axis, and the fan blade at motor shaft both ends is arranged the angle unanimously. The outer circumference of the motor shell is provided with axial ribs, and the outermost ends of the fan blades extend out of the outermost ends of the axial ribs by at least 50 mm. The outermost end of the fan blade is connected with a circular arc-shaped connecting plate, and a high-density metal block is arranged on the inner arc of the circular arc-shaped connecting plate. Grid type protective covers are mounted at two ends of the motor shell, and steel wire meshes are arranged on the grid type protective covers. The utility model has the advantages of the cooling effect is good, does not have specific requirement to the motor turns to, and barrier propterty is good.

Description

Air-cooled vibrating motor

Technical Field

The utility model relates to an air-cooled vibrating motor for arousing vibration equipment vibration belongs to the material and carries equipment field technique.

Background

The vibration motor is provided with eccentric blocks at two ends of a motor shaft so as to generate vibration, and the motor combines a mechanical part generating vibration and an electrical part generating power, has a series of advantages of compact structure, small size, convenient assembly and disassembly and the like, and is widely applied to various vibration devices. However, the motor has a certain problem in the working process, mainly because the motor shaft is provided with the eccentric block, in the process of high-speed rotation of the motor shaft, a bearing for supporting the motor shaft is subjected to very large alternating stress, so that the vibration motor generates very much mechanical heat in the working process, the mounting position of the bearing is generally close to a stator and a rotor of the vibration motor, the stator and the rotor also generate very large electric heat in the working process, and the two kinds of heat are superposed together, so that the working temperature of the vibration motor is greatly increased, and the stable operation of the bearing and a motor coil is greatly influenced. In actual work, the vibration motor works at high temperature, the service life of the vibration motor is shortened, a motor bearing is locked seriously, a coil is burnt, and the normal use of the vibration motor is seriously influenced.

In order to solve the problem, various methods are adopted to reduce the temperature of the vibration motor in the working process, for example, a water cooling method or an air cooling method is adopted to carry out temperature reduction treatment on the vibration motor, but at present, the methods have the problems of poor cooling effect, complex structure and the like, so that a new method is required to be adopted to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing such an air-cooled vibrating motor, it can solve the above-mentioned problem that vibrating motor exists effectively.

The purpose of the utility model is realized like this: the utility model provides an air-cooled vibrating motor, contains motor casing, motor shaft, bearing, takes the eccentric block of fan blade, the motor shaft passes through the bearing is installed on the motor casing, installs the active cell coil in the middle of the motor shaft, installs stator coil on the motor casing corresponding with the active cell coil, takes the eccentric block of fan blade to install at the motor shaft both ends, the eccentric block of taking the fan blade contains the fan blade, the fan blade is straight board-like fan blade, is 45 degrees angles along the radial parallel arrangement of motor shaft with the motor shaft axis, and the motor casing excircle surface is stretched out to the outermost end of fan blade, and the fan blade at motor shaft both.

The outer circumference of the motor shell is provided with axial ribs, and the outermost ends of the fan blades extend out of the outermost ends of the axial ribs by at least 50 mm.

The outermost ends of the fan blades are connected with circular arc-shaped connecting plates, and the circular arc-shaped connecting plates are connected with the outer end parts of the fan blades.

And a high-density metal block with the density higher than that of the steel is arranged on the inner arc of the circular arc-shaped connecting plate.

Grid type protective covers are mounted at two ends of the motor shell, and steel wire meshes are arranged on the grid type protective covers.

The eccentric blocks with the fan blades are arranged at the two ends of the motor shaft, so that an exciting force can be generated when the motor shaft rotates, and meanwhile, the motor shell can be cooled through the fan blades, and the overhigh temperature rise of a motor bearing and a coil is prevented. The outermost end of the fan blade extends out of the outer circle surface of the motor shell, the fan blade can cool the end face of the motor shell and can also cool the outer circle surface of the motor, and particularly, the cooling ribs along the axial direction are arranged on the outer circle surface of the motor shell, so that the cooling effect of the motor shell can be enhanced.

Because the vibration motor rotates randomly when being installed or working, and the two directions can rotate, the flat fan blade is adopted for the purpose, and the fan blade surface is arranged in parallel along the radial direction of the motor shaft and forms an angle of 45 degrees with the axis of the motor shaft, so that the same cooling effect can be generated on the motor shell no matter how the motor shaft rotates. The fan blades at the two ends of the motor shaft are arranged at the same angle, so that the wind direction generated by the vibration motor is the same when the vibration motor rotates, namely, one end blows air, the other end sucks air from the motor shell, effective circulation of the air flow can be guaranteed, the vortex effect generated by the fan blades at the two ends when blowing is prevented, and the cooling effect is enhanced.

The exciting force of the vibrating motor is in direct proportion to the weight of the eccentric block and the eccentricity of the eccentric block, the outermost ends of the fan blades are connected with the circular arc-shaped connecting plates, and the circular arc-shaped connecting plates are connected with the fan blades, so that the weight of the eccentric block is increased, and meanwhile, the eccentricity is also increased under the condition of the same weight, and therefore the exciting force of the vibrating motor can be effectively improved. In addition, the arc-shaped connecting plates are connected with the end parts of the fan blades, so that the connecting strength of the fan blades is increased, and the fan blade connecting structure has important significance for preventing the fan blades from falling off.

The inner arc of the arc-shaped connecting plate is provided with metal with density higher than that of steel, such as metal tungsten, lead and the like, so that effective eccentric weight is arranged in a small space between the fan blades, the eccentric distance of the fan blades is increased, large exciting force is generated, and the fan blades have very obvious advantages.

The grid type protective covers are arranged at the two ends of the motor shell, so that the rotating eccentric block can be effectively protected, the fan blade has the advantage of good ventilation effect, and the cooling effect of the fan blade can be fully exerted. Because the space between the grids of the grid-type protective cover is large, in order to further improve the protective effect and prevent fingers and small sundries of an operator from entering the eccentric block during the operation of the eccentric block to cause safety accidents, the steel wire mesh is arranged on the grid-type protective cover, so that the air permeability of the protective cover is not greatly influenced, and the protective effect can be ensured.

Drawings

The accompanying drawings show the embodiments of the present invention, wherein fig. 1 is a sectional view of the main structure of the embodiments, fig. 2 is a view taken along the direction a in fig. 1, and fig. 3 is a sectional view taken along the line B-B in fig. 2.

Detailed Description

In the embodiment shown in fig. 1, 2 and 3, a motor shaft 7 is installed in a motor housing 1 through a bearing 8, a rotor coil 10 is installed in the middle of the motor shaft, a stator coil 11 is installed on the motor housing corresponding to the rotor coil, a longitudinal rib plate 9 is arranged outside the motor housing, eccentric blocks are installed at two ends of the motor shaft, each eccentric block comprises an eccentric block seat 15, an arc-shaped connecting plate 2, a high-density metal counterweight block 3, a fan blade 4 and the like, the fan blade surfaces are arranged in parallel along the radial direction of the motor shaft and form an angle of 45 degrees with the axis of the motor shaft, the upper end and the lower end of each fan blade are respectively connected with the eccentric block seats. A groove is formed in the inner arc of the circular arc-shaped connecting plate, the high-density metal counterweight block is installed in the groove, the eccentric block seat is connected with the motor shaft in the circumferential direction through a key 14, the left end and the right end of the bearing are sealed and fixed through end covers 13, and the two ends of the installation position of the bearing are sealed through sealing rings 12 to protect lubricating grease. Two ends of the motor shell are connected with grid type protective covers 5, a steel wire mesh 6 is sleeved outside the grid type protective covers, the steel wire mesh is connected with the grid type protective covers in a welding mode, and the eccentric blocks are completely sealed by the steel wire mesh and the grid type protective covers.

After the vibrating motor starts to work by electrifying, the motor shaft rotates to drive the eccentric blocks at two ends to rotate simultaneously, the eccentric blocks generate exciting force, the fan blades arranged at 45 degrees simultaneously generate effective cooling air volume, the motor shell, the bearing, the stator coil and the rotor coil are cooled, because the rotating directions of the fan blades at two ends of the motor shaft are completely consistent with the arrangement angles of the fan blades and are 80mm higher than the outermost ends of the axial ribs, the flow direction of the generated cooling air is consistent, convection eddy current is not generated, the cooling air flows along grooves between longitudinal rib plates arranged on the motor shell simultaneously, and the cooling capacity can be further enhanced. Because the arrangement angle of the blades is arranged at an angle of 45 degrees, the cooling of the motor shell is consistent no matter which direction the motor shaft rotates, and the influence on the cooling effect caused by the inconsistent rotation direction of the motor shaft in the actual working process is avoided.

The grid type protective covers at the two ends of the eccentric block have good ventilation performance, and the cooling effect of the fan blades can be guaranteed. The steel wire mesh coated on the protective cover enhances the protection effect of the protective cover, and meanwhile, the ventilation volume cannot be obviously and negatively influenced.

The seal rings at the two ends of the bearing can prevent the loss of the lubricating grease filled in the bearing.

Claims

1. The utility model provides an air-cooled vibrating motor, contains motor casing, motor shaft, bearing, takes the eccentric block of fan blade, the motor shaft passes through the bearing is installed on motor casing, installs the active cell coil in the middle of the motor shaft, installs stator coil on the motor casing corresponding with the active cell coil, takes the eccentric block of fan blade to install at the motor shaft both ends, its characterized in that: the eccentric block with the fan blades comprises the fan blades which are straight plate type fan blades and are arranged in parallel along the radial direction of the motor shaft at an angle of 45 degrees with the axis of the motor shaft, the outermost ends of the fan blades extend out of the outer circle surface of the motor shell, and the arrangement angles of the fan blades at the two ends of the motor shaft are consistent.

2. The air-cooled vibration motor according to claim 1, characterized in that: the outer circumference of the motor shell is provided with axial ribs, and the outermost ends of the fan blades extend out of the outermost ends of the axial ribs by at least 50 mm.

3. The air-cooled vibration motor according to claim 1, characterized in that: the outermost ends of the fan blades are connected with circular arc-shaped connecting plates, and the circular arc-shaped connecting plates are connected with the outer end parts of the fan blades.

4. The air-cooled vibration motor according to claim 2, characterized in that: and a high-density metal block with the density higher than that of the steel is arranged on the inner arc of the circular arc-shaped connecting plate.

5. The air-cooled vibration motor according to claim 1, 2 or 3, characterized in that: grid type protective covers are mounted at two ends of the motor shell, and steel wire meshes are arranged on the grid type protective covers.