CN201260104Y - Motor end cover apparatus - Google Patents

Abstract

The utility model relates to a motor structural element, in particular to a motor end cap device that can enhance the heat dissipation capability, which solves the problems of poor heat dissipation effect, easy rising of motor temperature and shortened service life of the existing motor end cap and bearings, and comprises an end cap supported and fixed on a motor rotating shaft through bearings as well as an outer seal ring and an inner seal ring in interference fit with the rotating shaft, and the utility model has the creative points that: radiating ribs are evenly distributed on the circumference of the end cap, centrifugal fan blades are evenly distributed on the circumference of the outer seal ring, and the structure can increase the area of dissipation of the motor, the motor and the bearings have better cooling effects, and the structure can effectively increase the magnetocaloric load of the motor, reduce the volume of the motor, save materials, reduce costs and improve the running reliability; and the utility model has good structural universality, and can be widely applied to direct current, alternating current and permanent magnet motors and generators.

Description

The electric motor end cap device

Technical field

The utility model relates to a kind of electric machine structure parts, is specially a kind of electric motor end cap device that can strengthen heat-sinking capability.

Background technology

Known, the heat that motor internal stator and rotor produce very easily causes motor temperature to raise, motor internal winding insulation allowable temperature is according to using the class of insulation different and different, it is 200 degree that the C class F insulation allows temperature rise, motor windings insulation relatively, bearing allows temperature rise lower, only be 55K, bearing is bearing the heat of motor internal conduction on the one hand, itself be in operation on the one hand because friction also can produce heat, if the too high effective use that will affect lubricating grease of bearing temperature, and then influence bearing and motor useful life.Bearing temperature rise becomes the major reason that restricts motor volume and weight minimizing, and in service the situation of inefficacy also has generation because improper use causes the bearing wear aggravation, and temperature raises.Can reduce motor volume and weight though improve motor magnetic heat load, improve cost performance, especially bearing temperature rise is too high and influence reliability must to cause electric machine temperature rise.

Summary of the invention

The utility model provides a kind of electric motor end cap device in order to solve existing electric motor end cap and the bearing radiating effect is poor, easily cause problems such as motor temperature rising, reduction of service life.

The utility model is to adopt following technical scheme to realize: the electric motor end cap device, comprise by bearings be fixed on the machine shaft end cap and with outer seal ring, the internal sealed ring of rotating shaft interference fit, innovative point of the present utility model is that the end cap border is evenly equipped with radiating ribs, outer seal ring border is evenly equipped with centrifugal flabellum, and the quantity of described radiating ribs and flabellum and specification can be determined according to actual conditions.

Adopt structural design of the present utility model, turn round with rotating shaft when the machine operation, produce cooling air and cool off end cap by radiating ribs with the outer seal ring of centrifugal flabellum, after the end cap temperature reduces, then support and bearing heat transferred end cap, thus motor and bearing temperature rise reduced, and this structure can increase the motor radiating area, motor and bearing cooling effect are better, can effectively improve motor magnetic heat load, reduce motor volume, save material, reduce cost, improve operational reliability; And the structure versatility is good, can be widely used on direct current, interchange, permanent magnet motor and the generator.

Description of drawings:

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

Fig. 2 is the left view of Fig. 1

Among the figure: the outer seal ring 5-internal sealed ring 6-radiating ribs 7-flabellum of 1-bearing 2-machine shaft 3-end cap 4-

Embodiment

The electric motor end cap device, as shown in Figure 1, 2, comprise by bearing 1 be supported and fixed on the machine shaft 2 end cap 3 and with outer seal ring 4, the internal sealed ring 5 of rotating shaft interference fit, end cap 3 borders are evenly equipped with radiating ribs 6, outer seal ring 4 borders are evenly equipped with centrifugal flabellum 7.During concrete enforcement, can cast out or weld radiating ribs in the end cap border, flabellum also can connect with the covering boxing, and processing technology is fairly simple, easily realizes.

Claims (1)

1, a kind of electric motor end cap device, comprise by bearing (1) be supported and fixed on the machine shaft (2) end cap (3) and with outer seal ring (4), the internal sealed ring (5) of rotating shaft interference fit, it is characterized in that end cap (3) border is evenly equipped with radiating ribs (6), outer seal ring (4) border is evenly equipped with centrifugal flabellum (7).

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