CN2886180Y

CN2886180Y - Anti-shaft-locking bearing

Info

Publication number: CN2886180Y
Application number: CN 200620070420
Authority: CN
Inventors: 宋泽新
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-16
Filing date: 2006-03-16
Publication date: 2007-04-04
Anticipated expiration: 2016-03-16

Abstract

A hold axle defense bearing relates to a bearing for preventing the generator from holding axle. For the hold axle defense, the fitting-in diameter size of a generator cover and a bearing outer ring is increased, the small gap match is changed into the transition match. The bearing outer ring is properly fixed by a binding element for defending the rotation of the bearing outer ring when the generator runs. The bearing of the hold axle defense comprises an inner ring, the outer ring, a rolling element positioned between the inner ring and the outer ring, and a hole positioned on the outer ring for rotation preventing. The hole is on the diameter direction of the outer ring or on the axle length direction of the outer ring, or on the surface of the outer ring. To use the bearing can avoid the under size of the end play causing from matching unproperly, leading that the temperature of the bearing remains elevated to make the life time of the bearing decreased or even the hold axle accident of the generator occurred. Besides the noise of the bearing can be reduced, the influence of life time of the bearing affected by the shape and place tolerance produced by the manufacture is compensated, the manufacture and the assembly are propitious to be done, and the manufacture efficiency is enhanced.

Description

A kind of bearing of anti-seize

Technical field

The utility model relates to the bearing that is used for motor, specially refers to the bearing that is used for anti-motor seize.

Background technique

Before the utility model proposes, the bearing that generally uses on the motor although model has nothing in common with each other, includes inner ring, the roll piece between outer ring and the Internal and external cycle.The main shaft interference fit of the inner ring of bearing and motor guarantees the rotation of Nei Quan Sui main shaft synchronous high-speed.The end cap transition fit of the outer ring of bearing and motor makes outer ring Bu Hui Sui roll piece and rotates.Motor, particularly powerful motor are in the long-play process, and bearing tends to occur damaging phenomenon.Trace it to its cause, one side is because motor can produce more heat in the long-play process, and conduction expands bearing heating to bearing.At this moment, the inner ring of bearing and roll piece expand outward, cause expanding outside the outer ring of bearing, make the outer ring of bearing cooperate tension with the end cap of motor, and play diminishes, even causes seize.On the other hand when the end cap of the outer ring of machining bearing and motor, the scope of deviation overshoot separately, the outer ring of bearing exceeds the upper deviation, and the end cap of motor exceeds lower deviation.After the assembling, the gap between the outer ring of bearing and the end cap of motor is too small, causes bearing temperature than higher, and long-play will cause seize.When motor seize phenomenon takes place, must in time change bearing.In case find untimelyly, might burn motor.Cause bigger economic loss, increase operating cost.

The model utility content

The technical problems to be solved in the utility model is: proposes a kind of new bearing, can prevent the seize phenomenon, avoid motor out of service because of burning in of bearing, even the situation of being burnt.And the working life that can improve bearing.Save operating cost, increase economic efficiency.

The utility model is to realize by following technical measures.

In order to prevent seize, the bearing chamber of electric motor end cap or bearing housing and the fit dimension of bearing outer diameter are strengthened, the change transition fit is little Spielpassung.Strengthen 0.05～0.3 millimeter on original fit dimension basis, the numerical value of Cui is 0.08～0.12.

After above-mentioned fit dimension strengthened, bearing outer ring can rotate voluntarily, need be with in addition suitable fixing of fastening piece.

For this reason, a kind of bearing of anti-seize comprises inner ring, and the roll piece between outer ring and the Internal and external cycle has to prevent the hole of rotating on the outer ring.

The described hole that prevents to rotate is on the diametric(al) of outer ring, or on the length direction of the axle of outer ring, or on the surface of outer ring.

After the utility model adopts abovementioned technology, can avoid, cause that bearing temperature continues to rise, bearing life is descended, even motor bearings seize accident takes place because mismate causes play too small.Can also reduce bearing noise, remedy of the influence of the form and position tolerance that causes of processing, help processing and assembling, improve and make efficient bearing life.

Description of drawings

Fig. 1 is embodiment 1 a schematic representation, and Fig. 2 is embodiment 1 an assembling schematic representation.

Fig. 3 is embodiment 2 a schematic representation, and Fig. 4 is embodiment 2 an assembling schematic representation.

Fig. 5 is embodiment 3 a schematic representation, and Fig. 6 is embodiment 3 an assembling schematic representation.

1 is the inner ring of the bearing of anti-seize among the figure, 2 bearing outer rings for anti-seize, and 3 is the roll piece between inner ring 1 and the

outer ring

2,4 is the motor bearings inner cap, 5 is the motor bearings enclosing cover, and 6 is electric motor end cap, and 7 is motor shaft, 8 holes for radially preventing to rotate, 9 are the screw that is used to locate, 10 holes for axially preventing to rotate, 11 bolts for being used to locate, 12 for preventing the positioning hole that rotates on the surface of outer ring, 13 pins for being used to locate.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment 1 is as Fig. 1, and is shown in Figure 2.The bearing of anti-seize comprises inner ring 1, outer ring 2, and roll piece 3 has a hole that prevents to rotate 8 on the diametric(al) of outer ring 2.

On the end cap of motor, interior have motor bearings enclosing cover 5 outward by motor bearings inner cap 4, in the outside of bearing outer ring 2 electric motor end cap 6 arranged, and on this electric motor end cap 6 screw hole arranged with this Bearing Installation.9 on the bolt that is used to locate cooperatively interacts by the hole that prevents to rotate 8 on this screw hole and the bearing outer ring 2, thereby make bearing outer ring 2 obtain the location, guarantee that the play between bearing and the electric motor end cap can change, keep little Spielpassung between bearing and the electric motor end cap.Bearing clearance is constant when guaranteeing the bearing thermal expansion, prevents that bearing temperature from rising, and bearing life descends, even motor bearings seize accident takes place.

Embodiment 2 is as Fig. 3, and is shown in Figure 4.The bearing of anti-seize comprises inner ring 1, outer ring 2, roll piece 3, outer ring 2 axially on a hole that prevents to rotate 10 is arranged.

On the end cap of motor, interior have motor bearings enclosing cover 5 outward by motor bearings inner cap 4, in the outside of bearing outer ring 2 electric motor end cap 6 arranged with this Bearing Installation.On bearing end cover 5, bolt hole is arranged.11 on the bolt that is used to locate cooperatively interacts by the hole that prevents to rotate 10 on this screw hole and the bearing outer ring 2, thereby make bearing outer ring 2 obtain the location, guarantee that the play between bearing and the electric motor end cap can change, keep little Spielpassung between bearing and the electric motor end cap.Bearing clearance is constant when guaranteeing the bearing thermal expansion, prevents that bearing temperature from continuing to rise, and bearing life descends, even motor bearings seize accident takes place.

Embodiment 3 is as Fig. 5, and is shown in Figure 6.The bearing of anti-seize comprises inner ring 1, outer ring 2, and roll piece 3 has a positioning hole 12 that prevents to rotate semicircular in shape on the outer surface of outer ring 2.

On the end cap of motor, interior have motor bearings enclosing cover 5 outward by motor bearings inner cap 4, in the outside of bearing outer ring 2 electric motor end cap 6 arranged, and the positioning pin hole of semicircular in shape is arranged on this electric motor end cap 6 with this Bearing Installation.13 of locating studs that is used to locate by semicircular in shape on the electric motor end cap 6 positioning pin hole and the positioning hole 13 of the semicircular in shape that prevents to rotate on the outer surface of bearing outer ring 2 cooperatively interact, thereby make bearing outer ring 2 obtain the location, guarantee that the play between bearing and the electric motor end cap can change, keep little Spielpassung between bearing and the electric motor end cap.Bearing clearance is constant when guaranteeing the bearing thermal expansion, prevents that bearing temperature from continuing to rise, and bearing life descends, even motor bearings seize accident takes place.

Above-described only is preferred implementation of the present utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.

Claims

1. the bearing of an anti-seize comprises inner ring (1), and the roll piece (3) between outer ring (2) and the Internal and external cycle is characterized in that: have to prevent the hole of rotating on outer ring (3).

2. the bearing of a kind of anti-seize according to claim 1, it is characterized in that: the described hole that prevents to rotate is on the diametric(al) of outer ring (2).

3. the bearing of a kind of anti-seize according to claim 1 is characterized in that: the described hole that prevents to rotate is on the length direction of the axle of outer ring (2).

4. the bearing of a kind of anti-seize according to claim 1, it is characterized in that: the described hole that prevents to rotate is on the surface of outer ring (2).