CN106594088B - Bearing arrangement with oil gas leakage-proof structure - Google Patents

Abstract

The present invention discloses a kind of bearing arrangement with oil gas leakage-proof structure, is set to a motor apparatus, which includes a motor shell and a motor shaft, which includes a bearing block, a bearing shell and a spoiler.Bearing block is fixedly arranged on the motor shell.Bearing shell is set in the bearing block, which is rotationally arranged in the bearing shell.Spoiler is set to the bearing block, and is adjacent to the motor shaft.Bearing arrangement provided by the present invention with oil gas leakage-proof structure, is the rotation that air-flow is prevented using spoiler, avoids generating negative pressure because of the flowing of air-flow high speed, and then effectively the oil gas of bearing arrangement is avoided to be lost.

Description

Bearing arrangement with oil gas leakage-proof structure

Technical field

The present invention relates to a kind of bearing arrangements, refer in particular to a kind of axis preventing oil-gas escape using oil gas leakage-proof structure Bearing apparatus.

Background technology

The part of large-scale motor output shaft usually requires setting sliding bearing, in the part that sliding bearing is contacted with output shaft Lubricating oil is needed to be lubricated, the standard sliding bearing sold on the market usually will produce Leakage, the operating to bearing Harm is generated, and Leakage also results in motor interior coil and is contaminated, gets off to influence whether coil insulation for a long time Service life.In addition, the problem of oil leak, but will directly increase after service cost.

It please refers to Fig.1 to Fig.3, Fig. 1 shows existing motor bearing diagrammatic cross-section；Fig. 2 shows motor output shaft high speed Rotation and drive arround air-flow formed vortex schematic diagram；Fig. 3 show between motor output shaft and motor bearing device away from Curve synoptic diagram from the negative pressure caused by the vortex formed corresponding to axis surface.As shown, a kind of motor bearing device PA100 includes an a bearing block PA1 and bearing shell PA2.Wherein, bearing shell PA2 is provided in bearing block PA1, and motor output shaft PA200 is to be arranged in bearing shell PA2.When motor operation makes motor output shaft PA200 rotate, the rising of bearing chamber internal temperature is made At internal oil gas evaporation so that internal pressure rises, and the high-speed rotation of motor output shaft PA200 often drives the air-flow of surrounding And then it rotates and forms vortex S1, the especially part close to bearing block PA1, it can be because there is the blocking of bearing block PA1 so that quilt The air-flow that motor output shaft PA200 drives can be flowed along the wall surface of bearing block PA1, and then the flow velocity of air-flow is made to increase, relatively So that axis surface pressing is lowered and is formed negative pressure, a distance as shown in Figure 3 and pressure history C1, motor drive shaft at this time Bearing apparatus PA100 and the lubricating oil of motor output shaft PA200 contact portions can be easy to because the pressure reduced (is equivalent to negative Pressure) and make internal oil gas via oil sealing gap by negative pressure to taking out of outside bearing block PA1, cause the oil mass inside bearing block PA1 to subtract It is few, it causes lubricating oil to leak outside, and then influence the running of motor bearing, often causes more serious harm in the course of time.

Invention content

In view of in the prior art, due to when motor operation, arround the high speed rotation of motor output shaft can drive Air-flow rotates, and can stop the rotation of air-flow close to the part of bearing arrangement, and the rotating speed of air-flow is made to increase, and then is formed negative Pressure so that Bearing inner is carried over for the lubrication oil gasification lubricated outside bearing arrangement, and the running of motor is caused to be affected. Edge this, the main object of the present invention is to provide a kind of bearing arrangement with oil gas leakage-proof structure, with utilize oil gas leakage-proof structure To prevent the oil gas of lubricating oil to be lost in.

From the above, the present invention is to solve the problems, such as that the used necessary technology means of prior art are to provide one kind and have The bearing arrangement of oil gas leakage-proof structure is set to a motor apparatus, which includes that a motor shell and a motor turn Axis, the bearing arrangement include a bearing block, a bearing shell and a spoiler.Bearing block is fixedly arranged on the motor shell.Bearing shell is arranged In the bearing block, which is rotationally arranged in the bearing shell.Spoiler is set to the bearing block, and is adjacent to the horse Up to shaft.

An attached technological means derived from above-mentioned necessary technology means is that the bearing block has side seal setting in one Portion is formed with an equal pressure chamber between the interior side seal setting unit and the motor shaft, which is set to the interior side seal and sets Portion is set, and in the equal pressure chamber.

An attached technological means derived from above-mentioned necessary technology means is that the bearing block has an outer side seal setting Portion and a dustproof cover, which is set to the outside of the outer side seal setting unit, and is adjacent to the motor shaft, the spoiler It is set in the dustproof cover.

As noted previously, as the bearing arrangement provided by the present invention with oil gas leakage-proof structure, be using spoiler come The rotation for preventing air-flow avoids generating negative pressure because of the flowing of air-flow high speed, and then effectively avoids the gas stream of bearing arrangement It loses.

Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.

Description of the drawings

Fig. 1 shows existing motor bearing diagrammatic cross-section；

Fig. 2 shows motor output shaft high-speed rotation and the air-flow arround driving forms the schematic diagram of vortex；

Fig. 3 shows that the distance between motor output shaft and motor bearing device correspond to the curve of the negative pressure caused by vortex Schematic diagram；

Fig. 4 shows the bearing arrangement diagrammatic cross-section with oil gas leakage-proof structure that present pre-ferred embodiments are provided；

Fig. 5 shows the three-dimensional signal of the spoiler blocking air-flow flowing for the dustproof cover that present pre-ferred embodiments are provided Figure；And

Fig. 6 shows that present pre-ferred embodiments pressure history at a distance from prior art compares schematic diagram.

Wherein, reference numeral

PA100 motor bearing devices

PA1 bearing blocks

PA2 bearing shells

PA200 motor output shafts

S1 is vortexed

100 bearing arrangements with oil gas leakage-proof structure

1 bearing block

Side seal setting unit in 11

111 equal pressure chambers

12 outer side seal setting units

13 dustproof covers

The 13a dustproof cover first halves

13b dustproof covers lower half

2 bearing shells

3 spoilers

4 spoilers

200 motor apparatus

201 motor shells

202 motor shafts

The curve of C1, C2 distance and pressure change

Specific implementation mode

Technical solution of the present invention is described in detail in the following with reference to the drawings and specific embodiments, to be further understood that The purpose of the present invention, scheme and effect, but it is not intended as the limitation of scope of the appended claims of the present invention.

Fig. 4 to fig. 6 is please referred to, Fig. 4 shows the bearing with oil gas leakage-proof structure that present pre-ferred embodiments are provided Device diagrammatic cross-section；Fig. 5 shows the vertical of the spoiler blocking air-flow flowing for the dustproof cover that present pre-ferred embodiments are provided Body schematic diagram；Fig. 6 shows that present pre-ferred embodiments compare schematic diagram at a distance from prior art with pressure history.

As shown, a kind of bearing arrangement 100 with oil gas leakage-proof structure, and bearing arrangement 100 is disposed on a horse Up on device 200, motor apparatus 200 includes a motor shell 201 and a motor shaft 202, and bearing arrangement 100 includes an axis Bearing 1, a bearing shell 2, multiple spoilers 3 (one is only indicated in figure) and multiple spoilers 4 (one is only indicated in figure).

Wherein, bearing block 1 is to be fixedly arranged on motor shell 201, and have side seal setting unit 11, an outer side seal in one Setting unit 12 and a dustproof cover 13.An equal pressure chamber 111 is formed between interior side seal setting unit 11 and motor shaft 202, For practice with upper, equal pressure chamber 111 is to avoid inside and outside differential pressure excessive for balance shaft bearing 1 and outdoor gas pressure and cause Oil gas is lost in.Outer side seal setting unit 12 is to be oppositely disposed with interior side seal setting unit 11, and dustproof cover 13 is disposed on outside The outside of side seal setting unit 12, and dustproof cover 13 is adjacent to motor shaft 202；In addition, dustproof cover 13 is in the present embodiment It is spliced with a dustproof cover first half 13a and a dustproof cover lower half 13b.

Bearing shell 2 is set in bearing block 1, and motor shaft 202 is rotationally arranged in bearing shell 2.

Spoiler 3 is set to interior side seal setting unit 11, is located in equal pressure chamber 111, and be adjacent to motor shaft 202.

Spoiler 4 is set in dustproof cover 13, and is adjacent to motor shaft 202.

As described above, being illustrated by taking spoiler 4 as an example, as shown in Figure 5, when motor shaft 202 rotates, due to anti- Spoiler 4 is provided in dirt lid 13, therefore even if the rotation of motor shaft 202 can drive gas to flow, but gas is in flowing Can be stopped by spoiler 4, cause the flowing of gas that can not form vortex, into without generating negative pressure, effectively prevent because of Negative pressure appearance caused by the rotation of motor shaft 202 avoids the oil gas inside bearing block 1 from being taken out of by negative pressure and holds outside axle bed 1, and The curve C2 of a distance as shown in Figure 6 and pressure change is it is found that after dustproof cover 13 is provided with spoiler 4, motor shaft 202 From motor shell 201 it is closer with a distance from when, caused by pressure change compared to prior art for, the variation of negative pressure is true It is obviously reduced in fact, thereby, the bearing arrangement 100 provided by the present invention with oil gas leakage-proof structure really can be because of flow-disturbing The setting of plate 4 and effectively avoid the caused negative pressure appearance in rotation of motor shaft 202.Proving by the same methods, due to equal pressure chamber 111 It is inside again provided with spoiler 3, therefore also can effectively prevent and generate negative pressure in equal pressure chamber 111, and then is avoided in equal pressure chamber 111 Gas pressure is uneven.

Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe It knows those skilled in the art and makes various corresponding change and deformations, but these corresponding changes and change in accordance with the present invention Shape should all belong to the protection domain of appended claims of the invention.

Claims (2)

1. a kind of bearing arrangement with oil gas leakage-proof structure, which is characterized in that be set to a motor apparatus, the motor apparatus packet Containing a motor shell and a motor shaft, which includes：

One bearing block is fixedly arranged on the motor shell, and there is side seal setting unit in one, the interior side seal setting unit to turn with the motor An equal pressure chamber is formed between axis；

One bearing shell is set in the bearing block, which is rotationally arranged in the bearing shell；And

One spoiler is set to the interior side seal setting unit, and is adjacent to the motor shaft, and in the equal pressure chamber；

Wherein, it is the production for being stopped and being prevented negative pressure appearance by the spoiler which, which rotates driven gas flowing, It is raw.

2. a kind of bearing arrangement with oil gas leakage-proof structure, which is characterized in that be set to a motor apparatus, the motor apparatus packet Containing a motor shell and a motor shaft, which includes：

One bearing block is fixedly arranged on the motor shell, and there is an outer side seal setting unit and a dustproof cover, the dustproof cover to be set to this The outside of outer side seal setting unit, and it is adjacent to the motor shaft；

One bearing shell is set in the bearing block, which is rotationally arranged in the bearing shell；And

One spoiler is set in the dustproof cover, and is adjacent to the motor shaft；

Wherein, it is the production for being stopped and being prevented negative pressure appearance by the spoiler which, which rotates driven gas flowing, It is raw.