CN202992172U - Anti-pollution inner oil seal component for traction motor - Google Patents

Anti-pollution inner oil seal component for traction motor Download PDF

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Publication number
CN202992172U
CN202992172U CN 201220733818 CN201220733818U CN202992172U CN 202992172 U CN202992172 U CN 202992172U CN 201220733818 CN201220733818 CN 201220733818 CN 201220733818 U CN201220733818 U CN 201220733818U CN 202992172 U CN202992172 U CN 202992172U
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China
Prior art keywords
oil seal
inner oil
air pressure
pressure balance
labyrinth structure
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Active
Application number
CN 201220733818
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Chinese (zh)
Inventor
郭仁
罗小兰
陈剑平
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CSR Zhuzhou Electric Co Ltd
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CSR Zhuzhou Electric Co Ltd
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Priority to CN 201220733818 priority Critical patent/CN202992172U/en
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Publication of CN202992172U publication Critical patent/CN202992172U/en
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Abstract

The utility model discloses an anti-pollution inner oil seal component for a traction motor. The anti-pollution inner oil seal component comprises an inner oil seal and an inner oil seal sealing ring which are fixedly connected to form an air pressure balance chamber, wherein an air pressure balance channel is formed on the inner oil seal and communicated with the air pressure balance chamber; and an axial labyrinth structure is arranged on the inner oil seal and communicated with the air pressure balance chamber. The anti-pollution inner oil seal component is provided with the inner oil seal, the inner oil seal sealing ring and the air pressure balance chamber, and the air pressure balance chamber can directly balance negative pressure generated at a rotor position, so that the probability that lubricating oil flows to the bottom of the oil seal is reduced; and in addition, the axial labyrinth structure is arranged, so that the lubricating oil is needed to pass through a large labyrinth clearance, arrives at the air pressure balance chamber and is mixed with air, and the lubricating oil and the air are basically separated.

Description

A kind of anti-pollution inner oil seal assembly of traction electric machine
Technical field
The utility model relates to the traction electric machine technical field, and more particularly, particularly a kind of anti-pollution inner oil seal assembly of traction electric machine, be mainly used in preventing that in the traction electric machine bearing, lubricant oil is polluted.
Background technique
Traction electric machine all plays an important role at the industry-by-industry of national economy, and the lubricated of traction electric machine bearing is the prerequisite that guarantees that motor runs well, and inner oil seal is the important component part of bearing lubrication structure.The motor inner oil seal mainly plays seal action, can prevent that impurity from entering, and can prevent that also lubricant oil and lubricating grease from overflowing.
The inner oil seal ingress forms negative pressuren zone under the rotor bar centrifugal action, for the balance negative pressure, prevent the leakage of lubricant oil, and the traction electric machine of oil lubrication generally need to arrange the air pressure balance passage.The impurity such as extraneous dust and sand grains may be invaded the motor oil-way system by the air pressure balance passage, even cause motor dead.The motor inner oil seal is connected with the air pressure balance passage, is the important component part that consists of the oil lubrication path.The inner oil seal of oil lubrication traction electric machine should participate in equilibrium air pressure and bring into play again seal action, and this design to inner oil seal is had higher requirement.
Along with the development of traction electric machine technology, the load capacity of motor per unit volume requires increasing, and motor speed requires increasing, and operating temperature range requires wider.The motor of oil lubrication has larger operating temperature range, and higher rotation speed and than the heavy load ability can adapt to the demand for development of traction electric machine technology.But the air pressure balance passage of oil lubrication motor may enter the impurity such as dust and the grains of sand, affects motor and normally moves.
In sum, how to prevent that impurity from entering in asphalt channel by the air pressure balance passage, realize substantially separating of lubricant oil and atmosphere, improve the problem of bearing lubrication environment, become those skilled in the art's problem demanding prompt solution.
The model utility content
The technical problems to be solved in the utility model is for providing a kind of anti-pollution inner oil seal assembly of traction electric machine, and this Oil sealing assembly is realized substantially separating of lubricant oil and atmosphere, prevents that impurity from entering oil circuit, improves the bearing lubrication environment.
For solving the problems of the technologies described above, the utility model provides a kind of anti-pollution inner oil seal assembly of traction electric machine, and described anti-pollution inner oil seal assembly comprises: inner oil seal and inner oil seal seal ring, and described inner oil seal and described inner oil seal seal ring are fixedly linked;
Described inner oil seal and described inner oil seal seal ring enclose the air pressure balance chamber, offer the air pressure balance passage on described inner oil seal, and described air pressure balance passage and described air pressure balance chamber connect;
Be provided with axial labyrinth structure on described inner oil seal, described axial labyrinth structure and described air pressure balance chamber connect.
Preferably, be provided with radial labyrinth structure and drainback passage on described inner oil seal, described radial labyrinth structure and described drainback passage connect.
Preferably, described inner oil seal and described inner oil seal seal ring are fillet at the weld part place and are connected.
Preferably, radial labyrinth structure and axial labyrinth structure are four road labyrinth structures.
The beneficial effects of the utility model are:
Anti-pollution inner oil seal assembly of the present utility model, owing to being provided with inner oil seal, inner oil seal seal ring and air pressure balance chamber, the air pressure balance chamber is the negative pressure that produces of balancing rotor position directly, has reduced the probability of lubricant oil to the channelling of oil sealing afterbody; Owing to being provided with axial labyrinth structure, lubricant oil needs could to arrive the air pressure balance chamber through longer labyrinth clearance to be mixed with atmosphere, and lubricant oil is realized separating with atmosphere substantially.Like this, reduce the possibility that dust, sand grains enter motor internal, improved the bearing lubrication environment.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the structural representation of the utility model embodiment's anti-pollution inner oil seal assembly.
Respectively marking represented technical characteristics in accompanying drawing is:
1, inner oil seal, 2, the inner oil seal seal ring, 3, the air pressure balance chamber, 4, the air pressure balance passage, 5, the radial labyrinth structure, 6, axial labyrinth structure, 7, drainback passage, 8, weld part, 9, rotor pressing ring, 10, rotating shaft.
Embodiment
Core of the present utility model is for providing a kind of anti-pollution inner oil seal assembly of traction electric machine, and this Oil sealing assembly is realized substantially separating of lubricant oil and atmosphere, prevents that impurity from entering oil circuit, improves the bearing lubrication environment.
In order to make those skilled in the art understand better the technical solution of the utility model, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The present embodiment provides a kind of anti-pollution inner oil seal assembly of traction electric machine, and referring to Fig. 1, this anti-pollution inner oil seal assembly comprises: inner oil seal 1 and inner oil seal seal ring 2, inner oil seal 1 is fixedly linked with inner oil seal seal ring 2.Preferably, inner oil seal 1 adopts welding manner to be fixedly connected with inner oil seal seal ring 2, more preferably adopts the solid welding of aluminium Welding, inner oil seal 1 and inner oil seal seal ring 2 are fillet at weld part 8 places and are connected, connect comparatively smoothly, like this, reduced the windage of motor cooling air.
Inner oil seal 1 and inner oil seal seal ring 2 enclose air pressure balance chamber 3, offer air pressure balance passage 4 on inner oil seal 1, and air pressure balance passage 4 connects with air pressure balance chamber 3.Preferably, also be provided with radial labyrinth structure 5, axially labyrinth structure 6 and drainback passage 7 on inner oil seal 1, radial labyrinth structure 5 connects with drainback passage 7, and axially labyrinth structure 6 connects with air pressure balance chamber 3.Radial labyrinth structure 5 and axial labyrinth structure 6 all are preferably four road labyrinth structures, are easier to processing and effect better, and radial labyrinth structure 5 and axial labyrinth structure 6 also can be as multiple tracks labyrinth structures such as 5 roads, 6 roads.Like this, radial labyrinth structure 5 and axial labyrinth structure 6 are set on inner oil seal 1, and radial labyrinth structure 5 and axial labyrinth structure 6 employing non-contact type labyrinth structures, the non-contact type labyrinth structure can prevent oil leakage to greatest extent; Inner oil seal 1 is provided with drainback passage 7, is conducive to the recycling of oil return.The labyrinth length of radial labyrinth structure 5 and axial labyrinth structure 6 can be set according to sealing effect, and the labyrinth is longer, and better to the obstruction effect of oil stream and air-flow, sealing effect is better, but the mobility of oil stream can reduce; The size of drainback passage 7 designs according to recirculating oil quantity.The ingress, labyrinth of inner oil seal 1 forms negative pressuren zone under the rotor bar centrifugal action, for the balance negative pressure, prevent oil leakage, is provided with air pressure balance passage 4 on inner oil seal seal ring and inner oil seal.The negative pressure that produces is larger, and the radius of air pressure balance passage 4 also should be larger.Simultaneously, inner oil seal seal ring 2 and inner oil seal 1 enclose air pressure balance chamber 3 jointly, and air pressure balance chamber 3 is larger, and the effect of equilibrium air pressure is better.Due to air pressure balance chamber 3, radial labyrinth structure 5 and the axially existence of labyrinth structure 6, lubricant oil needs could to arrive the air pressure balance chamber through longer labyrinth clearance to be mixed with atmosphere, and lubricant oil is realized separating with atmosphere substantially.This has reduced the possibility that dust, sand grains enter motor internal, has improved the bearing lubrication environment.Simultaneously, the negative pressure of the air pressure balance direct balancing rotor of chamber energy position generation has reduced the probability of lubricant oil to the channelling of oil sealing afterbody.
Above anti-pollution inner oil seal assembly to a kind of traction electric machine provided by the utility model is described in detail.Used specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims (4)

1. the anti-pollution inner oil seal assembly of a traction electric machine, is characterized in that, described anti-pollution inner oil seal assembly comprises: inner oil seal (1) and inner oil seal seal ring (2), and described inner oil seal (1) is fixedly linked with described inner oil seal seal ring (2);
Described inner oil seal (1) encloses air pressure balance chamber (3) with described inner oil seal seal ring (2), offers air pressure balance passage (4) on described inner oil seal (1), and described air pressure balance passage (4) connects with described air pressure balance chamber (3);
Be provided with axial labyrinth structure (6) on described inner oil seal (1), described axial labyrinth structure (6) connects with described air pressure balance chamber (3).
2. the anti-pollution inner oil seal assembly of traction electric machine according to claim 1, it is characterized in that, be provided with radial labyrinth structure (5) and drainback passage (7) on described inner oil seal (1), described radial labyrinth structure (5) connects with described drainback passage (7).
3. the anti-pollution inner oil seal assembly of traction electric machine according to claim 1, is characterized in that, described inner oil seal (1) is located to be fillet with described inner oil seal seal ring (2) at weld part (8) and is connected.
4. the anti-pollution inner oil seal assembly of traction electric machine according to claim 2, is characterized in that, radial labyrinth structure (5) and axial labyrinth structure (6) are four road labyrinth structures.
CN 201220733818 2012-12-27 2012-12-27 Anti-pollution inner oil seal component for traction motor Active CN202992172U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220733818 CN202992172U (en) 2012-12-27 2012-12-27 Anti-pollution inner oil seal component for traction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220733818 CN202992172U (en) 2012-12-27 2012-12-27 Anti-pollution inner oil seal component for traction motor

Publications (1)

Publication Number Publication Date
CN202992172U true CN202992172U (en) 2013-06-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2545574A (en) * 2015-12-17 2017-06-21 Romax Tech Ltd Seal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2545574A (en) * 2015-12-17 2017-06-21 Romax Tech Ltd Seal
GB2545574B (en) * 2015-12-17 2018-10-17 Romax Tech Limited A Gearbox Seal for a Gearbox of a High Speed Train with a Pressure Differential

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