CN202798274U

CN202798274U - Vibration motor with aluminum alloy-cast iron composite bearing seat

Info

Publication number: CN202798274U
Application number: CN 201220042012
Authority: CN
Inventors: 魏华; 杜喜春
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-10
Filing date: 2012-02-10
Publication date: 2013-03-13
Anticipated expiration: 2022-02-10

Abstract

The utility model discloses a vibration motor with an aluminum alloy-cast iron composite bearing seat. The bearing seat of the vibration motor adopts an aluminum alloy-cast iron composite material structure, wherein cast iron in the composite bearing seat mainly bears a bearing load and transmits an exciting force, and aluminum alloy plays a role of heat conducting. An oil cavity of the composite bearing seat is designed to be a long sealed cavity, wherein the sealed cavity is provided with not only contact type rubber ring seal but also non-contact type labyrinth seal, thereby enabling the composite bearing seat to have a double dustproof function. The vibration motor with the aluminum alloy-cast iron composite bearing seat has good heat dissipation performance, and the overall motor is sealed and dustproof.

Description

Aluminium alloy, cast iron composite shaft bearing vibrating motor

Technical field

The utility model relates to a kind of vibrating motor, particularly a kind of aluminium alloy, cast iron composite shaft bearing vibrating motor.

Background technology

At present, general vibrating motor all is to adopt the threephase asynchronous both sides to install the vibration eccentric block additional according to the inertial oscillation principle to combine.Because the exciting force of this vibrating motor and eccentric block quality, eccentric arm and motor angular velocity is square proportional, so, the be in operation moment of inertia of eccentric block of motor is very large, so just the radial pressure of bearing is not stable so that motor bearings is in operation, but impact pressure.In order to make the work steady in a long-term of vibrating motor energy, the armature spindle of existing vibrating motor and bearing all will through accurate Design and manufacture, particularly large exciting force vibrating motor, in order to satisfy vibratory shock load, must be selected the rolling bearing of large model.Like this, compare with common electric machine, under equal speed conditions, the linear velocity of vibrating motor bearing ball is higher than common electric machine far away, and this is existing vibrating motor Bearing Temperature, damages frequently main cause.Moreover existing vibrating motor is owing to reasons in structure, and bearing pedestal must be contained in the casing, and according to the intensity needs, it is thicker that casing and bearing pedestal all design, and has virtually increased again the difficulty of bearing heat radiation.Between bearing two ends outer press cover axis hole and the rotating shaft certain interval must be arranged in addition, cause the sealed bearing housing difficulty, dust enters bearing chamber easily, so that existing vibrating motor damage of bearings is too fast, has a strong impact on the useful life of vibrating motor.

Summary of the invention

In order to overcome existing vibrating motor because of bearing heat radiation difficulty, the deficiency that too short and maintaining in the problem Caused Vibration motor such as poorly sealed useful life is loaded down with trivial details etc., the utility model provides a kind of aluminium alloy, cast iron composite shaft bearing vibrating motor, this vibrating motor is perfect heat-dissipating not only, sealing and dustproof, and maintaining is very easy.

The technical scheme that its technical problem that solves the utility model adopts is: the bearing pedestal of vibrating motor adopts aluminium alloy and cast iron composite structure, cast iron intensity is high, anti-wear performance is good, but heat conduction is relatively poor, mainly work to bear bearing load and transmit exciting force in the composite shaft bearing, intensity of aluminum alloy is low, and resistance to wear is relatively poor, but heat conductivility is good, mainly bears the effect of conduction heat in the composite shaft bearing.Long annular seal space is adopted in grease chamber's sealing of composite shaft bearing, increase a sealing door than existing vibrating motor, the sealing door not only has the effect of sealing ring in the fixing seal chamber, the more important thing is that it is as the installation carrier of protective cover, aluminium alloy, cast iron composite shaft bearing are directly contacted with outside air, created a good heat-dissipating space.

The design of long annular seal space makes the existing contact apron sealing of sealing of bearing pedestal that contactless labyrinth seal be arranged again, makes the bearing pedestal grease chamber have dual dustproof effect, has effectively avoided dust to enter the generation of bearing chamber phenomenon by the axis hole gap.

The beneficial effects of the utility model are the perfect heat-dissipating of vibrating motor bearing, complete machine sealing and dustproof, long service life.Simple in structure, easy to manufacture.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is structural representation of the present utility model.

Among the figure 1, motor case, 2, motor stator line bag, 3, motor shaft, 4, rotor, 5, bearing, 6, composite shaft bearing cast iron cylindrical, 7, aluminium alloy, 8, the cast iron inner circle, 9, the sealing door, 10, fixed seal ring, 11, rotating seal ring, 12, long annular seal space, 13, exciting eccentric block.

Embodiment

In Fig. 1, motor stator line bag (2) is passed into three-phase alternating current form a rotating magnetic field, just drive motor rotor (4) rotation of rotating magnetic field, while drive motor axle (3) and the exciting eccentric block (13) that is packed on the motor shaft rotate together, form inertial excitation power, by bearing (5) and aluminium alloy, cast iron composite shaft bearing, through the motor case (1) that is connected with vibratory equipment exciting force is passed to live load again.Composite shaft bearing cast iron cylindrical (6) and motor case (1) interference fit, composite shaft bearing cast iron inner circle (8) and bearing (5) interference fit, aluminium alloy (7) is with cast iron cylindrical and the cast iron inner circle formation solid housing that is combined with each other, outside heat conduction and heat radiation when bearing bearing load and transmitting exciting force.Fixed seal ring (10) in long annular seal space (12) and the rotating seal ring (11) that rotates together with motor shaft form double-sealing device jointly with sealing door (9).The eccentric block protective cover is packed on the cylindrical of sealing door (9), the radiator portion of composite shaft bearing is directly contacted, in order to heat radiation with outside air.

Claims

1. an aluminium alloy, cast iron composite shaft bearing vibrating motor, it is characterized in that: the bearing pedestal of vibrating motor adopts aluminium alloy and cast iron composite material to consist of, cast iron is the main body framework of composite shaft bearing inside and outside circle, bear bearing load and transmit exciting force, aluminium alloy is connection gusset and the middle compacting body of composite shaft bearing, bears the effect of conduction heat.

2. aluminium alloy according to claim 1, cast iron composite shaft bearing vibrating motor, it is characterized in that: composite shaft bearing grease chamber is sealed into long annular seal space design, consisted of by the sealing of contact apron and the dual dust guard of contactless labyrinth seal in its annular seal space, protective cover is installed on the sealing door, and the composite shaft bearing directly contacts with outside air.