CN202094735U - Motor shaft extension end sealing structure and motor - Google Patents

Motor shaft extension end sealing structure and motor Download PDF

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Publication number
CN202094735U
CN202094735U CN2011202183850U CN201120218385U CN202094735U CN 202094735 U CN202094735 U CN 202094735U CN 2011202183850 U CN2011202183850 U CN 2011202183850U CN 201120218385 U CN201120218385 U CN 201120218385U CN 202094735 U CN202094735 U CN 202094735U
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CN
China
Prior art keywords
bearing
oil seal
rotating shaft
motor
enclosing cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011202183850U
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Chinese (zh)
Inventor
周利安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningxia Northwest Courser Motor Manufacturing Co Ltd
Original Assignee
Ningxia Northwest Courser Motor Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningxia Northwest Courser Motor Manufacturing Co Ltd filed Critical Ningxia Northwest Courser Motor Manufacturing Co Ltd
Priority to CN2011202183850U priority Critical patent/CN202094735U/en
Application granted granted Critical
Publication of CN202094735U publication Critical patent/CN202094735U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a motor shaft extension end sealing structure. A shaft hole for a rotary shaft to penetrate through is arranged on an outer cover of a bearing holding portion of the motor shaft extension end sealing structure, a first annular groove concentric with the shaft hole and communicated with the same is arranged on a surface of the outer cover close to a bearing, a frame oil seal is embedded in the first annular groove, a second annular groove concentric with the shaft hole and communicated with the same is arranged on a surface of the outer cover distant from the bearing, a shaft surface oil seal is embedded in the second annular groove, and the inner diameter of the shaft surface oil seal is in interference with the rotary shaft. A shaft hole for the rotary shaft to penetrate through is arranged on an inner cover, a sealing groove concentric with the shaft hole and disconnected with the same is arranged on a surface of the inner cover distant from the bearing, an oil seal ring is embedded into the sealing groove and is matched with the same by a curve labyrinth oil-splashing prevention structure, the inner diameter of the oil seal ring is in interference fit with the rotary shaft, and a stopping ring is mounted between the inner cover and the oil seal ring. The utility model further provides a motor. The motor shaft extension end sealing structure is capable of preventing water from entering into an inner cavity of the motor.

Description

Motor shaft extension end hermetically-sealed construction and motor
Technical field:
The utility model relates to the motor technology field, and particularly a kind of anti-sealing enters motor shaft extension end hermetically-sealed construction and the motor in the inner chamber of motor.
Background technology:
Development machine is used for driving under the coal mine heavy grade type development machine with the flame-proof type threephase asynchronous.This development machine has the climbing capacity at the elevation angle-25 °~16 °, because development machine is provided with water injector, the water part of ejection is put and stayed the connecting shaft junction in the mining work.Flame-proof type threephase asynchronous operation rotation produces negative pressure, the shaft extension end sealing of flame-proof type threephase asynchronous is bad, please be simultaneously referring to Fig. 1, shaft extension end sealing separation structure comprises outside framework oil seal 20, O RunddichtringO 21, felt collar oil sealing 22, outside framework oil seal 20 is fixed on the enclosing cover 23 of flame-proof type threephase asynchronous, the internal diameter of outside framework oil seal 20 and rotating shaft 24 are matched in clearance, cause water to enter in the bearing chamber 25 from axle head, grease in the bearing chamber 25 is because the rising of motor long-term operation temperature, part lubricating grease is diluted, water, the dilution grease together is inhaled in the inner chamber of flame-proof type threephase asynchronous, cause the winding insulation resistance of flame-proof type threephase asynchronous to descend, cause the flame-proof type threephase asynchronous normally to move.
Summary of the invention:
In view of this, be necessary to provide a kind of and can prevent that sealing enters the motor shaft extension end hermetically-sealed construction in the inner chamber of motor.
Also be necessary to provide a kind of and can prevent that sealing enters the motor in the inner chamber of motor.
A kind of motor shaft extension end hermetically-sealed construction, this motor shaft extension end hermetically-sealed construction comprise bearing resettlement section, rotating shaft, outside framework oil seal, O RunddichtringO, axial plane oil sealing, back-up ring and the oil seal ring of the bearing that is used to accommodate motor shaft extension end.The bearing resettlement section comprises end cap, enclosing cover, inner cap.Enclosing cover, inner cap are arranged on the outer shaft of bearing both sides and clamping bearing, and end cap is arranged between enclosing cover, the inner cap and with the outer shaft of bearing and contacts, and the O RunddichtringO is arranged between end cap and enclosing cover, the inner cap.Cover outward and offer the axis hole that passes for rotating shaft, enclosing cover leans on the face of bearing into and offers first cannelure concentric with axis hole and that is communicated with, the embedding of first cannelure confession outside framework oil seal, and the internal diameter of outside framework oil seal and rotating shaft are matched in clearance; Offer second cannelure concentric with axis hole and that be communicated with on the face of enclosing cover away from bearing, second cannelure embeds for the axial plane oil sealing, and axial plane oil sealing internal diameter together rotates with rotating shaft with rotating shaft employing interference fit.In cover and offer the axis hole that penetrates for rotating shaft, offer seal groove concentric with axis hole and that be not communicated with on the face of inner cap away from bearing with axis hole, oil seal ring embed seal groove and and seal groove between adopt the anti-rejection oily respective outer side edges in Qu Lu labyrinth, oil seal ring internal diameter and rotating shaft employing interference fit.Back-up ring is installed between inner cap and the oil seal ring.
Preferably, the O RunddichtringO adopts nitrile rubber to make, and outside framework oil seal, axial plane oil sealing adopt the fluorubber material to make, and the felt collar oil sealing adopts half common and braid wool felt to become.
Preferably, adopt packing ring and screw mode relative fixed between bearing, the rotating shaft.
Preferably, adopt packing ring and screw mode relative fixed between end cap, enclosing cover, the inner cap.
A kind of motor comprises shaft extension end cover body, bearing, rotating shaft, outside framework oil seal, O RunddichtringO, axial plane oil sealing, back-up ring and oil seal ring.The shaft extension end cover body comprises end cap, enclosing cover, inner cap.Enclosing cover, inner cap are arranged on the outer shaft of bearing both sides and clamping bearing, and end cap is arranged between enclosing cover, the inner cap and with the outer shaft of bearing and contacts, and the O RunddichtringO is arranged between end cap and enclosing cover, the inner cap.Cover outward and offer the axis hole that passes for rotating shaft, enclosing cover leans on the face of bearing into and offers first cannelure concentric with axis hole and that is communicated with, the embedding of first cannelure confession outside framework oil seal, and the internal diameter of outside framework oil seal and rotating shaft are matched in clearance; Offer second cannelure concentric with axis hole and that be communicated with on the face of enclosing cover away from bearing, second cannelure embeds for the axial plane oil sealing, and axial plane oil sealing internal diameter together rotates with rotating shaft with rotating shaft employing interference fit.In cover and offer the axis hole that penetrates for rotating shaft, offer seal groove concentric with axis hole and that be not communicated with on the face of inner cap away from bearing with axis hole, oil seal ring embed seal groove and and seal groove between adopt the anti-rejection oily respective outer side edges in Qu Lu labyrinth, oil seal ring internal diameter and rotating shaft employing interference fit.Back-up ring is installed between inner cap and the oil seal ring.
Preferably, the O RunddichtringO adopts nitrile rubber to make, and outside framework oil seal, axial plane oil sealing adopt the fluorubber material to make, and the felt collar oil sealing adopts half common and braid wool felt to become.
Preferably, adopt packing ring and screw mode relative fixed between bearing, the rotating shaft.
Preferably, adopt packing ring and screw mode relative fixed between end cap, enclosing cover, the inner cap.
The motor of above-mentioned motor shaft extension end hermetically-sealed construction and employing motor shaft extension end hermetically-sealed construction, enclosing cover is away from increasing the axial plane oil sealing on the face of bearing, axial plane oil sealing internal diameter adopts interference fit together to rotate with axle with axle, the water that splashes out can't immerse from the shaft extension end, internal bearing cover increases oil seal ring, adopt anti-rejection oily structure in Qu Lu labyrinth and oil seal ring internal diameter and rotating shaft to adopt interference fit between the seal groove of oil seal ring and inner cap, back-up ring is fixing safe and reliable, even a spot of oil overflows in bearing chamber, can not enter motor cavity yet, guarantee that grease can not reduce in the bearing chamber, thereby avoided damage of bearings, winding insulation resistance reduces phenomenon, improves the reliability of motor quality, prolongs the useful life of motor.
Description of drawings:
Accompanying drawing 1 is the shaft extension end structure schematic diagram of motor of the prior art.
Accompanying drawing 2 is shaft extension end structure schematic diagrames of the motor of a better embodiment.
Among the figure: motor 10, shaft extension end cover body 11, end cap 111, enclosing cover 112, axis hole 1121, first cannelure 1122, second cannelure 1123, inner cap 113, axis hole 1131, seal groove 1132, cannelure 1133, bearing 12, rotating shaft 13, outside framework oil seal 14, O RunddichtringO 15, axial plane oil sealing 16, back-up ring 17, oil seal ring 18, felt collar oil sealing 19, outside framework oil seal 20, O RunddichtringO 21, felt collar oil sealing 22, enclosing cover 23, rotating shaft 24, bearing chamber 25
Embodiment:
Please referring to Fig. 2, motor 10 comprises shaft extension end cover body 11, bearing 12, rotating shaft 13, outside framework oil seal 14, O RunddichtringO 15, axial plane oil sealing 16, back-up ring 17, oil seal ring 18 and felt collar oil sealing 19.Wherein, O RunddichtringO 15 adopts nitrile rubber to make, and outside framework oil seal 14, axial plane oil sealing 16 adopt the fluorubber material to make, and felt collar oil sealing 19 adopts half common and braid wool felt to become.Adopt packing ring and screw mode relative fixed between bearing 12, the rotating shaft 13.Motor 10 can be development machine flame-proof type threephase asynchronous.
Shaft extension end cover body 11 is as the bearing resettlement section of accommodating bearing 12.Shaft extension end cover body 11 comprises end cap 111, enclosing cover 112, inner cap 113.Enclosing cover 112, inner cap 113 are arranged on the outer shaft 121 of bearing 12 both sides and clamping bearing 12.End cap 111 is arranged between enclosing cover 112, the inner cap 113 and with the outer shaft 121 of bearing 12 and contacts, and O RunddichtringO 15 is arranged between end cap 111 and enclosing cover 112, the inner cap 113.Adopt packing ring and screw mode relative fixed between end cap 111, enclosing cover 112, the inner cap 113.
Offer the axis hole 1121 that passes for rotating shaft 13 on the enclosing cover 112, enclosing cover 112 leans on and offers first cannelure 1122 concentric with axis hole 1121 and that be communicated with on the face of bearing 12 into, first cannelure 1122 embeds for outside framework oil seals 14, and the internal diameter of outside framework oil seal 14 and rotating shaft 13 are matched in clearance; Offer second cannelure, 1123, the second cannelures 1123 concentric with axis hole 1121 and that be communicated with on the face of enclosing cover 112 away from bearing 12 and embed, and axial plane oil sealing 16 internal diameters together rotate with rotating shaft 13 with rotating shaft 13 employing interference fit for axial plane oil sealings 16.
Offer the axis hole 1131 that penetrates for rotating shaft 13 on the inner cap 113.Offer on the face of inner cap 113 away from bearing 12 and axis hole 1131 concentric and seal grooves 1132 that be not communicated with axis hole 1131, oil seal ring 18 embed seal grooves 1132 and and seal groove 1132 between adopt the anti-rejection oily respective outer side edges in Qu Lu labyrinth, oil seal ring 18 internal diameters and rotating shaft 13 employing interference fit.Back-up ring 18 is installed between inner cap 113 and the oil seal ring 18.Offer cannelure 1133 on axis hole 1131 inwalls, felt collar oil sealing 19 embeds in the cannelure 1133.
The motor 10 of above-mentioned motor shaft extension end hermetically-sealed construction and employing motor shaft extension end hermetically-sealed construction, enclosing cover 112 is away from increasing axial plane oil sealing 16 on the face of bearing 12, axial plane oil sealing 16 internal diameters and rotating shaft 13 adopt interference fit together to rotate with rotating shaft 13, the water that splashes out can't immerse from the shaft extension end, internal bearing cover 113 increases oil seal ring 18, adopt anti-rejection oily structure in Qu Lu labyrinth and oil seal ring 18 internal diameters and rotating shaft 13 to adopt interference fit between the seal groove 1132 of oil seal ring 18 and inner cap 113, back-up ring 19 is fixing safe and reliable, even a spot of oil overflows in bearing chamber, can not enter motor cavity yet, guarantee that grease can not reduce in the bearing chamber, thereby avoided damage of bearings, winding insulation resistance reduces phenomenon, improves the reliability of motor quality, prolongs the useful life of motor.

Claims (8)

1. motor shaft extension end hermetically-sealed construction, this motor shaft extension end hermetically-sealed construction comprises bearing resettlement section, rotating shaft, outside framework oil seal, the O RunddichtringO of the bearing that is used to accommodate motor shaft extension end, and it is characterized in that: this motor shaft extension end hermetically-sealed construction also comprises axial plane oil sealing, back-up ring and oil seal ring;
The bearing resettlement section comprises end cap, enclosing cover, inner cap, and enclosing cover, inner cap are arranged on the outer shaft of bearing both sides and clamping bearing, and end cap is arranged between enclosing cover, the inner cap and with the outer shaft of bearing and contacts, and the O RunddichtringO is arranged between end cap and enclosing cover, the inner cap;
Cover outward and offer the axis hole that passes for rotating shaft, enclosing cover leans on the face of bearing into and offers first cannelure concentric with axis hole and that is communicated with, the embedding of first cannelure confession outside framework oil seal, and the internal diameter of outside framework oil seal and rotating shaft are matched in clearance; Offer second cannelure concentric with axis hole and that be communicated with on the face of enclosing cover away from bearing, second cannelure embeds for the axial plane oil sealing, and axial plane oil sealing internal diameter together rotates with rotating shaft with rotating shaft employing interference fit;
In cover and offer the axis hole that penetrates for rotating shaft, offer seal groove concentric with axis hole and that be not communicated with on the face of inner cap away from bearing with axis hole, oil seal ring embed seal groove and and seal groove between adopt the anti-rejection oily respective outer side edges in Qu Lu labyrinth, oil seal ring internal diameter and rotating shaft employing interference fit; Back-up ring is installed between inner cap and the oil seal ring.
2. motor shaft extension end hermetically-sealed construction according to claim 1 is characterized in that: the O RunddichtringO adopts nitrile rubber to make, and outside framework oil seal, axial plane oil sealing adopt the fluorubber material to make, and the felt collar oil sealing adopts half common and braid wool felt to become.
3. motor shaft extension end hermetically-sealed construction according to claim 1 is characterized in that: adopt packing ring and screw mode relative fixed between bearing, the rotating shaft.
4. motor shaft extension end hermetically-sealed construction according to claim 1 is characterized in that: adopt packing ring and screw mode relative fixed between end cap, enclosing cover, the inner cap.
5. a motor comprises shaft extension end cover body, bearing, rotating shaft, outside framework oil seal, O RunddichtringO, and it is characterized in that: this motor also comprises axial plane oil sealing, back-up ring and oil seal ring; The shaft extension end cover body comprises end cap, enclosing cover, inner cap;
Enclosing cover, inner cap are arranged on the outer shaft of bearing both sides and clamping bearing, and end cap is arranged between enclosing cover, the inner cap and with the outer shaft of bearing and contacts, and the O RunddichtringO is arranged between end cap and enclosing cover, the inner cap;
Cover outward and offer the axis hole that passes for rotating shaft, enclosing cover leans on the face of bearing into and offers first cannelure concentric with axis hole and that is communicated with, the embedding of first cannelure confession outside framework oil seal, and the internal diameter of outside framework oil seal and rotating shaft are matched in clearance; Offer second cannelure concentric with axis hole and that be communicated with on the face of enclosing cover away from bearing, second cannelure embeds for the axial plane oil sealing, and axial plane oil sealing internal diameter together rotates with rotating shaft with rotating shaft employing interference fit;
In cover and offer the axis hole that penetrates for rotating shaft, offer seal groove concentric with axis hole and that be not communicated with on the face of inner cap away from bearing with axis hole, oil seal ring embed seal groove and and seal groove between adopt the anti-rejection oily respective outer side edges in Qu Lu labyrinth, interference fit is adopted in oil seal ring internal diameter and rotating shaft, and back-up ring is installed between inner cap and the oil seal ring.
6. motor according to claim 5 is characterized in that: the O RunddichtringO adopts nitrile rubber to make, and outside framework oil seal, axial plane oil sealing adopt the fluorubber material to make, and the felt collar oil sealing adopts half common and braid wool felt to become.
7. motor according to claim 5 is characterized in that: adopt packing ring and screw mode relative fixed between bearing, the rotating shaft.
8. motor according to claim 5 is characterized in that: adopt packing ring and screw mode relative fixed between end cap, enclosing cover, the inner cap.
CN2011202183850U 2011-06-29 2011-06-29 Motor shaft extension end sealing structure and motor Expired - Lifetime CN202094735U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202183850U CN202094735U (en) 2011-06-29 2011-06-29 Motor shaft extension end sealing structure and motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202183850U CN202094735U (en) 2011-06-29 2011-06-29 Motor shaft extension end sealing structure and motor

Publications (1)

Publication Number Publication Date
CN202094735U true CN202094735U (en) 2011-12-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011202183850U Expired - Lifetime CN202094735U (en) 2011-06-29 2011-06-29 Motor shaft extension end sealing structure and motor

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102231583A (en) * 2011-06-29 2011-11-02 宁夏西北骏马电机制造股份有限公司 Motor shaft extension end sealing structure and motor
CN103982436A (en) * 2014-05-28 2014-08-13 珠海凌达压缩机有限公司 Flange and shell connection structure, horizontal type rotary compressor bearing pedestal and oil coating shell connection structure as well as horizontal type rotary compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102231583A (en) * 2011-06-29 2011-11-02 宁夏西北骏马电机制造股份有限公司 Motor shaft extension end sealing structure and motor
CN103982436A (en) * 2014-05-28 2014-08-13 珠海凌达压缩机有限公司 Flange and shell connection structure, horizontal type rotary compressor bearing pedestal and oil coating shell connection structure as well as horizontal type rotary compressor

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20111228

CX01 Expiry of patent term