CN111536244A - Staggered rain-proof structure suitable for rotating shaft - Google Patents

Staggered rain-proof structure suitable for rotating shaft Download PDF

Info

Publication number
CN111536244A
CN111536244A CN202010270913.0A CN202010270913A CN111536244A CN 111536244 A CN111536244 A CN 111536244A CN 202010270913 A CN202010270913 A CN 202010270913A CN 111536244 A CN111536244 A CN 111536244A
Authority
CN
China
Prior art keywords
dust cover
rotating shaft
box body
shaft
rotating
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.)
Pending
Application number
CN202010270913.0A
Other languages
Chinese (zh)
Inventor
俞刘建
付丽强
康海峰
查颖
陈寅玺
刘龙涛
张兴勇
许斌
陈志�
王波兰
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.)
Shanghai Institute of Electromechanical Engineering
Original Assignee
Shanghai Institute of Electromechanical Engineering
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 Shanghai Institute of Electromechanical Engineering filed Critical Shanghai Institute of Electromechanical Engineering
Priority to CN202010270913.0A priority Critical patent/CN111536244A/en
Publication of CN111536244A publication Critical patent/CN111536244A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/54Other sealings for rotating shafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00Shafts; Axles; Cranks; Eccentrics
    • F16C3/02Shafts; Axles
    • F16C3/023Shafts; Axles made of several parts, e.g. by welding
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/44Free-space packings
    • F16J15/447Labyrinth packings

Abstract

The invention provides a staggered rain-proof structure suitable for a rotating shaft, which comprises: the water-proof device comprises a box body 1, a rotating shaft 2, a rotating shaft 3, a rotating body 4, an upper water-proof cover 5 and a lower water-proof cover 6; the rotating body 4 is in transitional connection with the rotating shaft 2 through the rotating shaft 3; the upper dust cover 5 includes: an upper dust cover bottom mounting surface; the bottom mounting surface of the upper dust cover is attached to the outer surface of the box body 1; the upper dust cover 5 is arranged above the rotating shaft 2; the lower dust cover 6 is arranged below the rotating shaft 2; the lower dust cover 6 is arranged on the inner side of the circular ring of the transfer shaft 3; the lower dust cover 6 is attached to the outer surface of the box body 1; the lower dust cover 6 includes: the upper edge of the lower dust cover; the case 1 includes: a notch of the box body; the box body gap is arranged below the box body 1. The invention can be designed in a miniaturized way, and the space between the rotating body and the box body is fully utilized.

Description

Staggered rain-proof structure suitable for rotating shaft
Technical Field
The invention relates to the field of rotating shaft rain-proof structures, in particular to a staggered rain-proof structure suitable for a rotating shaft.
Background
The rotation axis is comparatively common design form among the engineering design, if not protect, the product rainwater easily invades the product cavity along the rotation axis under the effect of wind power when outdoor work, causes the damage of product. For rain protection, the rotating shaft is generally provided with a rain-proof cover, a radial sealing ring or a sealing bearing and the like. However, in actual use, the waterproof cover shell is large in size, and has high requirements for use space, the radial sealing mode realizes double sealing of air and rainwater, the abrasion of the rotating shaft and the increase of rotating resistance are easily caused, high requirements are provided for the machining precision of the rotating shaft and the coaxiality of the shaft hole, and a large amount of cost is increased. Therefore, the industry needs a novel rotation axis structure of preventing drenching with rain, can expose the part to carry out effectual drainage protection to the rotation axis, and occupation space is little, and wearing and tearing are few, and the rolling resistance is little, and the machining precision and the shaft hole axiality of rotation axis require lowly and economic nature is good.
Patent document CN106089968A discloses a rotating shaft including a shaft body, and further including: the strengthening rib, the strengthening rib winding is on the axis body, and its direction of winding is opposite with axis body work direction of rotation. The invention has the following characteristics: the shaft body of the rotating shaft is provided with the reinforcing ribs, and the winding direction of the reinforcing ribs is opposite to the working rotating direction of the rotating shaft, so that the rotating shaft can bear corresponding torsion. This patent does not provide effective drainage protection for the exposed portion of the rotating shaft.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a staggered type rain-proof structure suitable for a rotating shaft.
According to the invention, the staggered rain-proof structure suitable for the rotating shaft comprises: the water-proof device comprises a box body 1, a rotating shaft 2, a rotating shaft 3, a rotating body 4, an upper water-proof cover 5 and a lower water-proof cover 6; the rotating body 4 is in transitional connection with the rotating shaft 2 through the rotating shaft 3; the upper dust cover 5 includes: an upper dust cover bottom mounting surface; the bottom mounting surface of the upper dust cover is attached to the outer surface of the box body 1; the upper dust cover 5 is arranged above the rotating shaft 2; the lower dust cover 6 is arranged below the rotating shaft 2; the lower dust cover 6 is arranged on the inner side of the circular ring of the transfer shaft 3; the lower dust cover 6 is attached to the outer surface of the box body 1; the lower dust cover 6 includes: the upper edge of the lower dust cover; the case 1 includes: a notch of the box body; the box body notch is arranged below the box body 1; the box body notch and the upper edge of the lower dust cover are in compression joint, and the bottom surface is flush after compression joint.
Preferably, the coupling shaft 3 comprises: and a circular ring-shaped protrusion structure.
Preferably, the rotating shaft 2 and the adapter shaft 3 are sleeved.
Preferably, the rotating shaft 2 and the adapter shaft 3 are fastened and connected by a rotating shaft connecting bolt 9.
Preferably, the method further comprises the following steps: a T-shaped connecting part; the T-shaped connecting part is arranged at the connecting part of the rotating body 4 and the adapting shaft 3; the T-shaped connecting part has a T-shaped structure.
Preferably, two sides of the T-shaped connecting portion are respectively connected and fixed with the rotator 4 through 2 rotator connecting bolts 10.
Preferably, the rotor 4 comprises: the rotating body is flanged; the turnup of the rotating body is covered with the T-shaped connecting part in a waterproof way; the rotor flanging waterproof coating adapter shaft is connected with the bolt 9.
Preferably, the method further comprises the following steps: a dustproof pad mounting groove, a dustproof pad 8 and a pressing plate 7; the dustproof pad mounting groove is arranged on the inner side of the box body 1; the dustproof pad 8 is arranged in the dustproof pad mounting groove; the pressing plate 7 can press the dustproof pad 8.
Preferably, the method further comprises the following steps: a seal ring; the lower dust cover 6 adopts a nearly semicircular rotator with an L-shaped section; the sealing ring includes: a first sealing ring and a second sealing ring; the first sealing ring is arranged at the joint of the lower dust cover 6 and the outer surface of the box body 1; the bottom of the lower dust cover 6 is provided with a diversion trench; the upper dust cover 5 adopts a semi-annular rotator with an L-shaped section; the annular edge extending out of the upper dust cover 5 is positioned between the rotating body 4 and the circular ring of the adapter shaft 3; the second sealing ring is arranged at the joint of the bottom mounting surface of the upper dust cover and the outer surface of the box body 1.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can be designed in a miniaturized way, and the space between the rotating body and the box body is fully utilized;
2. the sealing element has small rotating abrasion on the rotating shaft, less power loss and improved transmission efficiency;
3. the invention has low requirement on the processing precision of the rotating shaft and the coaxiality of the matching of the shaft hole, has strong adaptability and saves economic cost.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a first sectional view of a straggling type rain protection structure suitable for a rotation shaft according to an embodiment of the present invention.
Fig. 2 is a second sectional view of a straggling type rain protection structure adapted to a rotation shaft according to an embodiment of the present invention.
Fig. 3 is a third sectional view of a straggling type rain protection structure suitable for a rotation shaft according to an embodiment of the present invention.
In the figure:
pressing plate 7 of box body 1
Dust-proof pad 8 for rotary shaft 2
Rotating shaft connecting bolt 9 of adapter shaft 3
Rotor 4 rotor attachment bolt 10
Upper waterproof cover 5 and lower waterproof cover pouring groove 12
Lower waterproof cover 6
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
According to the invention, the staggered rain-proof structure suitable for the rotating shaft comprises: the water-proof device comprises a box body 1, a rotating shaft 2, a rotating shaft 3, a rotating body 4, an upper water-proof cover 5 and a lower water-proof cover 6; the rotating body 4 is in transitional connection with the rotating shaft 2 through the rotating shaft 3; the upper dust cover 5 includes: an upper dust cover bottom mounting surface; the bottom mounting surface of the upper dust cover is attached to the outer surface of the box body 1; the upper dust cover 5 is arranged above the rotating shaft 2; the lower dust cover 6 is arranged below the rotating shaft 2; the lower dust cover 6 is arranged on the inner side of the circular ring of the transfer shaft 3; the lower dust cover 6 is attached to the outer surface of the box body 1; the lower dust cover 6 includes: the upper edge of the lower dust cover; the case 1 includes: a notch of the box body; the box body notch is arranged below the box body 1; the box body notch and the upper edge of the lower dust cover are in compression joint, and the bottom surface is flush after compression joint. A lower water shield pouring groove 12 is arranged on the lower dust shield 6.
Aiming at the defects of the existing rotating shaft rain-proof structure, the invention provides a staggered rain-proof structure suitable for a rotating shaft, which has the advantages of small occupied space, less abrasion, small rotation resistance, low requirements on the machining precision of the rotating shaft and the coaxiality of a shaft hole and good economical efficiency.
Preferably, the coupling shaft 3 comprises: and a circular ring-shaped protrusion structure.
Preferably, the rotating shaft 2 and the adapter shaft 3 are sleeved.
Preferably, the rotating shaft 2 and the adapter shaft 3 are fastened and connected by a rotating shaft connecting bolt 9.
Preferably, the method further comprises the following steps: a T-shaped connecting part; the T-shaped connecting part is arranged at the connecting part of the rotating body 4 and the adapting shaft 3; the T-shaped connecting part has a T-shaped structure.
Preferably, two sides of the T-shaped connecting portion are respectively connected and fixed with the rotator 4 through 2 rotator connecting bolts 10.
Preferably, the rotor 4 comprises: the rotating body is flanged; the turnup of the rotating body is covered with the T-shaped connecting part in a waterproof way; the rotor flanging waterproof coating adapter shaft is connected with the bolt 9.
Preferably, the method further comprises the following steps: a dustproof pad mounting groove, a dustproof pad 8 and a pressing plate 7; the dustproof pad mounting groove is arranged on the inner side of the box body 1; the dustproof pad 8 is arranged in the dustproof pad mounting groove; the pressing plate 7 can press the dustproof pad 8.
Preferably, the method further comprises the following steps: a seal ring; the lower dust cover 6 adopts a nearly semicircular rotator with an L-shaped section; the sealing ring includes: a first sealing ring and a second sealing ring; the first sealing ring is arranged at the joint of the lower dust cover 6 and the outer surface of the box body 1; the bottom of the lower dust cover 6 is provided with a diversion trench; the upper dust cover 5 adopts a semi-annular rotator with an L-shaped section; the annular edge extending out of the upper dust cover 5 is positioned between the rotating body 4 and the circular ring of the adapter shaft 3; the second sealing ring is arranged at the joint of the bottom mounting surface of the upper dust cover and the outer surface of the box body 1.
Specifically, in one embodiment, a straggling type rain protection structure suitable for a rotation shaft includes: the dustproof cover comprises a box body 1, a rotating shaft 2, a rotating shaft 3, a rotating body 4, an upper waterproof cover 5, a lower waterproof cover 6, a pressing plate 7, a dustproof pad 8, a rotating shaft connecting bolt 9, a rotating body connecting bolt 10 and a sealing ring.
As shown in fig. 1, 2 and 3, the rotor 4 and the rotating shaft 2 are transitionally connected through an adapter shaft 3 with a circular ring-shaped protrusion. The rotating shaft 2 and the adapter shaft 3 are sleeved and connected and fixed through a rotating shaft connecting bolt 9, the connecting part of the rotating body 4 and the adapter shaft 3 is T-shaped, and two sides of the T-shaped part are respectively connected and fixed with the rotating body 4 through 2 rotating body connecting bolts 10. And a flange is reserved on the outer side of the rotating body 4 and is used for performing waterproof coating on the 3T-shaped part of the adapter shaft and the adapter shaft connecting bolt 9. The inner side of the box body 1 is provided with a dustproof pad 8 mounting groove for mounting an annular dustproof pad 8 and pressing the dustproof pad by a pressing plate 7. The lower dust cover 6 is a nearly semicircular rotator with an L-shaped cross section, is arranged below the rotating shaft 2, is positioned on the inner side of the circular ring of the connecting shaft 3, is attached to the outer surface of the box body 1 and is provided with a sealing ring, and the bottom of the lower dust cover is provided with a diversion trench. Go up dust cover 5 and be the semicircular rotator of L type cross-section together, install in the top of pivot 2, and its annular border that stretches out is located between rotor 4 and the 3 rings of adapting shaft, goes up 5 bottom installation faces of dust cover and 1 surface laminating of box and is equipped with the sealing washer, and the below is equipped with breach and lower dust cover 6 upper limb and carries out the crimping, and the bottom surface flushes after the crimping.
The invention can be designed in a miniaturized way, and the space between the rotating body and the box body is fully utilized; the sealing element has small rotating abrasion on the rotating shaft, less power loss and improved transmission efficiency; the invention has low requirement on the processing precision of the rotating shaft and the coaxiality of the matching of the shaft hole, has strong adaptability and saves economic cost.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

1. The utility model provides a structure of drenching with rain is prevented to formula of straggling suitable for rotation axis which characterized in that includes: the water-proof device comprises a box body (1), a rotating shaft (2), a switching shaft (3), a rotating body (4), an upper water-proof cover (5) and a lower water-proof cover (6);
the rotating body 4 is in transitional connection with the rotating shaft 2 through the rotating shaft 3;
the upper dust cover (5) includes: an upper dust cover bottom mounting surface;
the bottom mounting surface of the upper dust cover is attached to the outer surface of the box body (1);
the upper dust cover (5) is arranged above the rotating shaft (2);
the lower dust cover (6) is arranged below the rotating shaft (2);
the lower dust cover (6) is arranged on the inner side of the circular ring of the transfer shaft (3);
the lower dust cover (6) is attached to the outer surface of the box body (1);
the lower dust cover (6) includes: the upper edge of the lower dust cover;
the box (1) comprises: a notch of the box body;
the box body notch is arranged below the box body (1);
and the box body notch is in compression joint with the upper edge of the lower dust cover.
2. The structure of claim 1, wherein the coupling shaft (3) comprises: and a circular ring-shaped protrusion structure.
3. The straggling structure for a rotating shaft according to claim 1, wherein the rotating shaft (2) and the adapting shaft (3) are sleeved.
4. The structure of claim 3, further comprising: a rotating shaft connecting bolt (9);
the rotating shaft (2) and the adapter shaft (3) are fastened and connected by a rotating shaft connecting bolt (9).
5. The structure of claim 1, further comprising: a T-shaped connecting part;
the T-shaped connecting part is arranged at the connecting part of the rotating body (4) and the rotating shaft (3);
the T-shaped connecting part has a T-shaped structure.
6. The structure of claim 5, further comprising: two rotating body connecting bolts (10);
the two sides of the T-shaped connecting part are respectively connected and fixed with the rotating body (4) through two rotating body connecting bolts (10).
7. The straggling type rain protection structure for a rotating shaft according to claim 4, wherein the rotor (4) comprises: the rotating body is flanged;
the rotor flanging coats the T-shaped connecting part.
8. The straggling type rain protection structure suitable for a rotating shaft according to claim 7, wherein the rotor flange is wrapped around the adapter shaft connecting bolt (9).
9. The structure of claim 1, further comprising: a dustproof pad mounting groove, a dustproof pad (8) and a pressing plate (7);
the dustproof pad mounting groove is arranged on the inner side of the box body (1);
the dustproof pad (8) is arranged in the dustproof pad mounting groove;
the pressing plate (7) can compress the dustproof pad (8).
10. The structure of claim 1, further comprising: a seal ring;
the lower dust cover (6) adopts a nearly semicircular rotator with an L-shaped section;
the sealing ring includes: a first sealing ring and a second sealing ring;
the first sealing ring is arranged at the joint of the lower dust cover (6) and the outer surface of the box body (1);
the bottom of the lower dust cover (6) is provided with a diversion trench;
the upper dust cover (5) adopts a semi-annular rotator with an L-shaped section;
the extended annular edge of the upper dust cover (5) is positioned between the rotating body (4) and the circular ring of the transfer shaft (3);
the second sealing ring is arranged at the joint of the bottom mounting surface of the upper dust cover and the outer surface of the box body (1).
CN202010270913.0A 2020-04-08 2020-04-08 Staggered rain-proof structure suitable for rotating shaft Pending CN111536244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010270913.0A CN111536244A (en) 2020-04-08 2020-04-08 Staggered rain-proof structure suitable for rotating shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010270913.0A CN111536244A (en) 2020-04-08 2020-04-08 Staggered rain-proof structure suitable for rotating shaft

Publications (1)

Publication Number Publication Date
CN111536244A true CN111536244A (en) 2020-08-14

Family

ID=71978536

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010270913.0A Pending CN111536244A (en) 2020-04-08 2020-04-08 Staggered rain-proof structure suitable for rotating shaft

Country Status (1)

Country Link
CN (1) CN111536244A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB317710A (en) * 1928-08-18 1930-10-30 George Francis Pettinos Improvements in grinding mills
CN201487175U (en) * 2009-08-18 2010-05-26 宁波优适捷传动件有限公司 Variable speed controlling ball connection assembly
CN202188130U (en) * 2011-08-22 2012-04-11 天津市祥威传动设备有限公司 Reducer rotating shaft dustproof and greaseproof sealing device
JP2014155264A (en) * 2013-02-06 2014-08-25 Hitachi Industrial Equipment Systems Co Ltd Rotary electric machine
CN104235172A (en) * 2013-12-13 2014-12-24 襄阳振本传动设备有限公司 Precise ball socket bearing
CN204175856U (en) * 2014-10-15 2015-02-25 芜湖天佑汽车技术有限公司 A kind of Dustproof device of shock absorber
US9771971B1 (en) * 2016-10-31 2017-09-26 Mevotech Lp Locking boot for ball joint
CN208089755U (en) * 2018-04-02 2018-11-13 成都望锦汽车部件有限公司 A kind of automobile swing arm flexural pivot pressing type dust cover installation system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB317710A (en) * 1928-08-18 1930-10-30 George Francis Pettinos Improvements in grinding mills
CN201487175U (en) * 2009-08-18 2010-05-26 宁波优适捷传动件有限公司 Variable speed controlling ball connection assembly
CN202188130U (en) * 2011-08-22 2012-04-11 天津市祥威传动设备有限公司 Reducer rotating shaft dustproof and greaseproof sealing device
JP2014155264A (en) * 2013-02-06 2014-08-25 Hitachi Industrial Equipment Systems Co Ltd Rotary electric machine
CN104235172A (en) * 2013-12-13 2014-12-24 襄阳振本传动设备有限公司 Precise ball socket bearing
CN204175856U (en) * 2014-10-15 2015-02-25 芜湖天佑汽车技术有限公司 A kind of Dustproof device of shock absorber
US9771971B1 (en) * 2016-10-31 2017-09-26 Mevotech Lp Locking boot for ball joint
CN108019419A (en) * 2016-10-31 2018-05-11 美沃科技有限合伙公司 Locking protective cover for globe joint
CN208089755U (en) * 2018-04-02 2018-11-13 成都望锦汽车部件有限公司 A kind of automobile swing arm flexural pivot pressing type dust cover installation system

Similar Documents

Publication Publication Date Title
CN202978530U (en) Low voltage anti-strong water spraying explosion proof marine motor
CN111536244A (en) Staggered rain-proof structure suitable for rotating shaft
CN211481045U (en) Motor output waterproof construction
CN219655105U (en) Sealing assembly hub bearing
CN208623430U (en) Safeguard structure and motor
CN201866104U (en) Waterproof gland bush
CN206379808U (en) A kind of waterproof machine
CN201746256U (en) Eccentric wear resistance center swivel joint for wheel crane
CN210133120U (en) Low-floor vehicle, bogie and shaft end waterproof structure thereof
CN208908391U (en) A kind of waterproof construction of external rotor electric machine
CN211351897U (en) Motor that four rotor unmanned aerial vehicle were used
CN216618540U (en) Combined oil seal for outer rotor type motor shaft
CN215419846U (en) Labyrinth sealing structure of motor
CN206555445U (en) A kind of rotating seal component
CN216162513U (en) Waterproof motor
CN218352306U (en) Waterproof cover for electric push rod
CN110611392A (en) Motor output waterproof construction
CN201228654Y (en) Bidirectional thrust shaft single-suction centrifugal pump
CN201059353Y (en) Hub bearing dust-proof apparatus
CN218760966U (en) Composite structure of lip seal ring with special-shaped inner diameter and seal ring with outer retainer ring cover
CN210372004U (en) Dust keeper of vertical shaft of powder concentrator
CN214850731U (en) Take outer rotor electric machine of waterproof construction
CN216078306U (en) Main shaft waterproof sealing structure
CN112377620B (en) Framework oil seal for mechanical transmission part
CN209276045U (en) Crane rotation connector

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200814

RJ01 Rejection of invention patent application after publication