CN103401342B - A kind of electric motor end cap and a kind of motor - Google Patents
A kind of electric motor end cap and a kind of motor Download PDFInfo
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- CN103401342B CN103401342B CN201310366713.5A CN201310366713A CN103401342B CN 103401342 B CN103401342 B CN 103401342B CN 201310366713 A CN201310366713 A CN 201310366713A CN 103401342 B CN103401342 B CN 103401342B
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- end cap
- control box
- sand control
- sand
- electric motor
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Abstract
The invention discloses a kind of electric motor end cap and a kind of motor being provided with this electric motor end cap, this electric motor end cap comprises: the end cap body being provided with the air pressure balance passage for balance motor inner and outer air pressure, and the channel entrance of air pressure balance passage and channel outlet lay respectively at outside and the inner side of end cap body; Be arranged at the sand control box outside end cap body, sand control box is provided with air intlet and air outlet slit, air outlet slit communicates with channel entrance; Be arranged at multiple sand block beams of sand control box inside, multiple sand block beam is configured for the bending gas circuit of the flow direction changing moving air.During motor on-line operation, flow in the bending gas circuit that air enough becomes at multiple sand block beam, with sand block beam generation multiple impact, thus make the sand dust in air effectively be stopped, sand dust is avoided to enter motor internal, thus play sand controlling result well, effectively improve motor bearing lubrication environment.
Description
Technical field
The present invention relates to motor device field, particularly a kind of electric motor end cap and a kind of motor being provided with this electric motor end cap.
Background technology
Along with the development of traction electric machine technology, the load capacity of motor unit volume requires increasing, and motor speed requires more and more higher, and operating temperature range is also more and more wider.For obtaining the speed of larger power and Geng Gao, modern locomotive generally adopts AC traction electric motor.For meeting the high rotation speed requirements of AC traction electric motor, larger-size driving end bearing generally adopts oil lubrication structure, by drive system pinion rotation, by lubricating oil splash in traction electric machine oil collection box, then flow into bearing chamber and play lubrication, and flow back to gear box eventually through the spill port of inner oil seal and end cap.
During motor High Rotation Speed, under the centrifugal action of rotor bar, inner oil seal afterbody labyrinth place can form negative pressuren zone.For balance negative pressure, prevent motor from altering oily phenomenon, motor needs on end cap, arrange air pressure balance passage, be connected with the oil return chamber of inner oil seal, but the impurity such as simultaneously extraneous sand grains and dust also can invade motor cycle oil piping system by air pressure balance passage, contaminated oil lubrication environment, causes motor bearings inordinate wear, even causes motor dead.At present, there are the problems referred to above in the locomotive of domestic Multiple Type all to some extent, not yet finds a kind of effectively safeguard procedures.
Therefore, how under the prerequisite not affecting motor air pressure balance, realizing sand controlling result, to improve motor bearing lubrication environment, is the problem that solution needed badly by current high-speed heavy loading locomotive traction electric machine.
Summary of the invention
In view of this, the invention discloses a kind of electric motor end cap and a kind of motor being provided with this electric motor end cap, under the prerequisite not affecting motor inside and outside air pressure balance, sand controlling result preferably can be reached, to improve motor bearing lubrication environment.
For achieving the above object, the invention provides following technical scheme:
A kind of electric motor end cap, comprise end cap body, described end cap body is provided with the air pressure balance passage for balance motor inner and outer air pressure, the channel entrance of described air pressure balance passage is positioned at the outside of described end cap body, the channel outlet of described air pressure balance passage is positioned at the inner side of described end cap body, further, this electric motor end cap also comprises:
Be arranged at the sand control box outside described end cap body, described sand control box is provided with air intlet and air outlet slit, and described air outlet slit communicates with described channel entrance;
Be arranged at multiple sand block beams of described sand control box inside, multiple described sand block beam is configured for the bending gas circuit of flow direction changing moving air, and described moving air is to enter in described sand control box from described air intlet and enter described air pressure balance passage from described air outlet slit then to enter moving air inside described end cap body.
Preferably, in above-mentioned electric motor end cap, described sand control box comprises:
With the sand control box edge of described end cap body integral type casting, described sand control box edge is positioned at the outside of described end cap body;
Cover plate, described cover plate is covered on described sand control box edge and forms described sand control box.
Preferably, in above-mentioned electric motor end cap, described cover plate and described sand control box edge are removably connected by screw.
Preferably, in above-mentioned electric motor end cap, between described cover plate and described sand control box edge, be provided with rubber blanket.
Preferably, in above-mentioned electric motor end cap, in described sand control box edge, the terrace part corresponding with the described channel entrance of described air pressure balance passage is provided with described air outlet slit, and the edge width of described terrace part is 3mm-7mm.
Preferably, in above-mentioned electric motor end cap, during machine operation, described air intlet is positioned at described sand control box near the side on ground, and the import of described air intlet vertically faces down.
Preferably, in above-mentioned electric motor end cap, described end cap body is also provided with knockout passage, one end of described knockout passage connects with multiple described channel entrance, the other end connects with the described air outlet slit of described sand control box, and, during machine operation, sidewall near ground in described knockout passage is conical hopper structure, the funnel bottom of described conical hopper structure and described sand control box interior thereof, so that the sand dust landing falling into described knockout passage then skids off from described air intlet to described sand control box.
Preferably, in above-mentioned electric motor end cap, described sand block beam side is fixed on the medial surface of described cover plate, and the opposite side of described sand block beam coordinates with described sand control box internal surface gaps.
Preferably, in above-mentioned electric motor end cap, in described sand control box, be provided with 3-5 sand block beam.
A kind of motor, this motor is provided with above described electric motor end cap.
As can be seen from above-mentioned technical scheme, when being provided with the motor on-line operation of the electric motor end cap that the embodiment of the present invention provides, by the air pressure balance channel balance motor inner and outer air pressure on electric motor end cap, now, the flowing through channel of moving air is: bending gas circuit-air outlet slit-channel entrance-air pressure balance passage-channel outlet-motor internal cooling duct-motor air outlet-motor free surrounding space that motor free surrounding space-air intlet-multiple sand block beam is formed.In technique scheme, when flowing in the bending gas circuit that air enough becomes at multiple sand block beam (or claiming gas circuit labyrinth), even if there is sand dust to enter in sand control box, through bending gas circuit by with sand block beam generation multiple impact, sand dust all can effectively be stopped.Visible, the moving air that carry sand grains and dust cannot directly pour in the air pressure balance passage on end cap body, thus avoid sand grains and dust to enter motor internal, serve sand controlling result well, effectively improve motor bearing lubrication environment, ensure the normal operation of motor, extend its useful life.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Assembly structure schematic diagram between the sand control box that Fig. 1 provides for the embodiment of the present invention and end cap body;
The structural representation at the sand control box edge that Fig. 2 provides for the embodiment of the present invention;
The arrangement schematic diagram of the multiple sand block beams in the sand control box edge that Fig. 3 provides for the embodiment of the present invention;
The structural representation being provided with the cover plate of sand block beam that Fig. 4 provides for the embodiment of the present invention;
The cover plate that Fig. 5 provides for the embodiment of the present invention, sand block beam, assembly structure schematic diagram between sand control box edge and end cap body;
Air-flow direction in the sand control box that Fig. 6 provides for the embodiment of the present invention and the operating diagram in sand dust landing direction.
Wherein, 1 is end cap body, and 2 is sand control box edge, and 3 is cover plate, and 4 is sand block beam, and 11 is air pressure balance passage, and 111 is channel entrance, and 12 is knockout passage, and 121 is conical hopper structure, and 21 is terrace part, and 22 is air intlet.
Embodiment
The invention discloses a kind of electric motor end cap and a kind of motor being provided with this electric motor end cap, under the prerequisite not affecting motor inside and outside air pressure balance, sand controlling result preferably can be reached, to improve motor bearing lubrication environment.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 6, assembly structure schematic diagram between the sand control box that Fig. 1 provides for the embodiment of the present invention and end cap body, the structural representation at the sand control box edge that Fig. 2 provides for the embodiment of the present invention, the arrangement schematic diagram of the multiple sand block beams in the sand control box edge that Fig. 3 provides for the embodiment of the present invention, the structural representation being provided with the cover plate of sand block beam that Fig. 4 provides for the embodiment of the present invention, the cover plate that Fig. 5 provides for the embodiment of the present invention, sand block beam, assembly structure schematic diagram between sand control box edge and end cap body, air-flow direction in the sand control box that Fig. 6 provides for the embodiment of the present invention and the operating diagram in sand dust landing direction.
The electric motor end cap that the embodiment of the present invention provides, comprises end cap body 1, sand control box and multiple sand block beam 4.Wherein, end cap body 1 is provided with the air pressure balance passage 11 for balance motor inner and outer air pressure, the channel entrance 111 of air pressure balance passage 11 is positioned at the outside of end cap body 1, and the channel outlet of air pressure balance passage 11 is positioned at the inner side of end cap body 1; Sand control box is arranged at the outside of end cap body 1, sand control box is provided with air intlet 22 and air outlet slit, and air outlet slit communicates with the channel entrance 111 on end cap body 1; Sand block beam 4 is arranged at the inside of sand control box, multiple sand block beam 4 forms bending gas circuit (also can be described as gas circuit labyrinth), for changing the flow direction of moving air, moving air refers to and to enter in sand control box from the air intlet 22 of sand control box and then to enter the moving air inside end cap body 1 from the air pressure balance passage 11 that the air outlet slit of sand control box enters end cap body 1.
In a particular embodiment, in order to not affect the counterbalance effect of air pressure balance passage 11 pairs of motor inner and outer air pressures, the setting principle of the sand block beam 4 in sand control box is: make the breathing area of bending gas circuit in sand control box as far as possible close to total cross-sectional area (in other words close to total breathing area of " channel entrance 111 " or total breathing area of " channel outlet " of air pressure balance passage 11) of air pressure balance passage 11, not affect original throughput of air pressure balance passage 11.Further, in order to improve sand controlling result, the bending degree of the bending gas circuit of order is as far as possible large.
When motor on-line operation, by the air pressure balance passage 11 balance motor inner and outer air pressure on electric motor end cap, now, the flowing through channel of moving air is: bending gas circuit-air outlet slit-channel entrance 111-air pressure balance passage 11-channel outlet-motor internal cooling duct-motor air outlet-motor free surrounding space that motor free surrounding space-air intlet 22-multiple sand block beam 4 is formed.In technique scheme, when air flows in the gas circuit labyrinth that multiple sand block beam 4 reaches (referring to the air-flow direction described in large arrow in Fig. 6), even if there is sand dust to enter in sand control box, through gas circuit labyrinth by there is multiple impact with sand block beam 4, sand dust all can effectively be stopped.Visible, the moving air that carry sand grains and dust cannot directly pour in the air pressure balance passage 11 on end cap body 1, thus avoid sand grains and dust to enter motor internal, serve sand controlling result well, effectively improve motor bearing lubrication environment, ensure the normal operation of motor, extend its useful life.
In a specific embodiment, sand control box is made up of sand control box edge 2 and cover plate 3, wherein, sand control box edge 2 for be positioned at end cap body 1 outside and with the bulge-structure (specifically referring to Fig. 1 and Fig. 2) of end cap body 1 integral type casting, cover plate 3 is covered on sand control box edge 2, removably connects (specifically referring to Fig. 4 and Fig. 5) with sand control box edge 2 by screw.Further, the height at sand control box edge 2 can need to adjust according to motor breathing area, after having cast, must add milling one cutter, to ensure the assembling evenness between cover plate 3 at top, sand control box edge 2 fitting surface.Further, utilize angle welding mode, 3 to 5 pieces of (being preferably 4 pieces) sand block beams 4 are welded on the medial surface of cover plate 3, thus when this cover plate 3 is assembled on sand control box edge 2, sand control box inside just defines the gas circuit labyrinth for sand control.
In above-mentioned specific embodiment, sand block beam 4 side is welded in the medial surface of cover plate 3, and the opposite side of sand block beam 4 coordinates with sand control box internal surface gaps.Therefore, the height of sand block beam 4 and the height at sand control box edge 2 should keep close, only need reserve the gap of 0 ~ 0.5mm, the mount pad on the weld seam of sand block beam 4 and sand control box edge 2 should be avoided in addition to interfere, affect the assembling effect at cover plate 3 and sand control box edge 2.
In above-mentioned specific embodiment, terrace part 21 corresponding with the channel entrance 111 of air pressure balance passage 11 in sand control box edge 2 is provided with air outlet slit, and, for when avoiding assembling, cover plate 3 interferes with end cap body 1, the edge width of terrace part 21 is that 3mm-7mm(is preferably 5mm), to realize the effective sealing between cover plate 3 and sand control box edge 2.In addition, during machine operation, the air intlet 22 of sand control box is positioned at the side of sand control box near ground, and import vertically faces down, and it is tangent that sector-style direction walked by flow direction when making moving air enter sand control box and motor.
In order to optimize technique scheme further, in a particular embodiment, the assembling mode between sand control box edge 2 and cover plate 3, can increase and use the intermediate material such as rubber blanket or surfactant, to improve assembling effect.
But, those skilled in the art it is easily understood that, the position of sand control box should be arranged according to the position of the air pressure balance passage 11 on end cap body, the importer of the air intlet of sand control box is to arranging according to the different protection requirements of motor, the overall dimension of sand block beam 4 and fixed angle should be arranged according to the different degree of protection of motor and air pressure balance demand, further, the concrete material of sand control box and sand block beam can be selected according to the embody rule environmental quality of traction electric machine.In addition, in a particular embodiment, the concrete set-up mode for sand control box and sand block beam 4 has multiple design.Such as, sand block beam 4 is fixed in the region that end cap body 1 lateral surface surrounds by sand control box edge 2 by welding or the mode of mechanical fasteners; Such as, sand block beam 4 is by the mode of integral type casting or be affixed on cover plate 3 by screw; Such as, can also be fixedly connected with by clamping or the mode of welding between sand control box edge 2 with cover plate 3; Such as, sand control box and sand block beam 4 are the plastic part be affixed to outside end cap body 1; Such as, sand control box and sand block beam 4 assemble the gas circuit labyrinth formed, and its labyrinth trend can be in horizontal direction, also can be in short transverse; Etc..Therefore, the present invention to be not specifically limited this.
In order to optimize technique scheme further, as shown in Figure 1, in the electric motor end cap that the embodiment of the present invention provides, end cap body 1 is also provided with knockout passage 12, one end of knockout passage 12 connects with multiple channel entrance 111, and the other end connects with the air outlet slit of sand control box.And, during machine operation, sidewall near ground in knockout passage 12 is conical hopper structure 121, the funnel bottom of this conical hopper structure 121 and sand control box interior thereof, and coordinate the gap between sand block beam 4 and sand control box edge 2 to form knockout path, so that the sand dust landing falling into knockout passage 12 skids off to sand control box and then from the air intlet 22 of sand control box, thus exclude the sand grains dropped in knockout passage 12 chamber in time.
As fully visible, the motor end cap structure that the embodiment of the present invention provides is simple, be easy to through engineering approaches, assembling mode is solid and reliable, fracture and the problem that comes off can not be there is because of factors such as vibration, heatings in motor operation course, and air pressure balance effect and sand controlling result can be had concurrently, better can meet current high-speed heavy loading locomotive traction electric machine bearing lubrication environmental demand.
In addition, present invention also offers a kind of motor, this motor is provided with the electric motor end cap provided in above-described embodiment, thus while making motor have air pressure balance effect concurrently, its inside also has good sand controlling result, improves motor bearing lubrication environment, extends the useful life of motor.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an electric motor end cap, comprise end cap body (1), described end cap body (1) is provided with the air pressure balance passage (11) for balance motor inner and outer air pressure, the channel entrance (111) of described air pressure balance passage (11) is positioned at the outside of described end cap body (1), the channel outlet of described air pressure balance passage (11) is positioned at the inner side of described end cap body (1), it is characterized in that, also comprise:
Be arranged at the sand control box in described end cap body (1) outside, described sand control box is provided with air intlet (22) and air outlet slit, described air outlet slit communicates with described channel entrance (111);
Be arranged at multiple sand block beams (4) of described sand control box inside, multiple described sand block beam (4) is configured for the bending gas circuit of flow direction changing moving air, and described moving air be to enter in described sand control box from described air intlet (22) and enter described air pressure balance passage (11) from described air outlet slit then to enter moving air inside described end cap body (1).
2. electric motor end cap according to claim 1, is characterized in that, described sand control box comprises:
With the sand control box edge (2) of described end cap body (1) integral type casting, described sand control box edge (2) is positioned at the outside of described end cap body (1);
Cover plate (3), described cover plate (3) is covered in the described sand control box of the upper formation of described sand control box edge (2).
3. electric motor end cap according to claim 2, is characterized in that, described cover plate (3) and described sand control box edge (2) are removably connected by screw.
4. electric motor end cap according to claim 3, is characterized in that, is provided with rubber blanket between described cover plate (3) and described sand control box edge (2).
5. electric motor end cap according to claim 2, it is characterized in that, terrace part (21) corresponding with the described channel entrance (111) of described air pressure balance passage (11) in described sand control box edge (2) is provided with described air outlet slit, further, the edge width of described terrace part (21) is 3mm-7mm.
6. electric motor end cap according to claim 1, is characterized in that, during machine operation, described air intlet (22) is positioned at described sand control box near the side on ground, and the import of described air intlet (22) vertically faces down.
7. electric motor end cap according to claim 6, it is characterized in that, described end cap body (1) is also provided with knockout passage (12), one end of described knockout passage (12) connects with multiple described channel entrance (111), the other end connects with the described air outlet slit of described sand control box, and, during machine operation, sidewall near ground in described knockout passage (12) is conical hopper structure (121), the funnel bottom of described conical hopper structure (121) and described sand control box interior thereof, so that the sand dust landing falling into described knockout passage (12) then skids off from described air intlet (22) to described sand control box.
8. electric motor end cap according to claim 2, it is characterized in that, described sand block beam (4) side is fixed on the medial surface of described cover plate (3), and the opposite side of described sand block beam (4) coordinates with described sand control box internal surface gaps.
9. the electric motor end cap according to any one of claim 1-8, is characterized in that, is provided with 3-5 sand block beam (4) in described sand control box.
10. a motor, is characterized in that, is provided with the electric motor end cap as described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366713.5A CN103401342B (en) | 2013-08-21 | 2013-08-21 | A kind of electric motor end cap and a kind of motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366713.5A CN103401342B (en) | 2013-08-21 | 2013-08-21 | A kind of electric motor end cap and a kind of motor |
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| Publication Number | Publication Date |
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| CN103401342A CN103401342A (en) | 2013-11-20 |
| CN103401342B true CN103401342B (en) | 2015-09-09 |
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| CN201310366713.5A Active CN103401342B (en) | 2013-08-21 | 2013-08-21 | A kind of electric motor end cap and a kind of motor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190835Y (en) * | 1993-11-10 | 1995-03-01 | 文登市第二电机厂 | Semi closed inner fixed axial flow fan asynchronous motor |
| CN2373939Y (en) * | 1999-04-23 | 2000-04-12 | 赵子明 | Sand-proof sealing mechanism for submerged motor |
| CN203504337U (en) * | 2013-08-21 | 2014-03-26 | 南车株洲电机有限公司 | Motor end cover and motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5532673B2 (en) * | 2009-05-12 | 2014-06-25 | 日産自動車株式会社 | Rotating electric machine and method of manufacturing rotating electric machine |
| JP5288284B2 (en) * | 2010-02-12 | 2013-09-11 | 株式会社デンソー | Rotating electric machine |
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2013
- 2013-08-21 CN CN201310366713.5A patent/CN103401342B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190835Y (en) * | 1993-11-10 | 1995-03-01 | 文登市第二电机厂 | Semi closed inner fixed axial flow fan asynchronous motor |
| CN2373939Y (en) * | 1999-04-23 | 2000-04-12 | 赵子明 | Sand-proof sealing mechanism for submerged motor |
| CN203504337U (en) * | 2013-08-21 | 2014-03-26 | 南车株洲电机有限公司 | Motor end cover and motor |
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| Publication number | Publication date |
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| CN103401342A (en) | 2013-11-20 |
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Address after: 412000 Hunan Province, Zhuzhou Shifeng District Tianxin High-tech Park South car Zhuzhou Motor Co. Ltd. Patentee after: CRRC ZHUZHOU ELECTRIC CO., LTD. Address before: 412000 Hunan Province, Zhuzhou Shifeng District Tianxin High-tech Park South car Zhuzhou Motor Co. Ltd. Patentee before: CSR Zhuzhou Electric Machine Co., Ltd. |