CN111536244A - Staggered rain-proof structure suitable for rotating shaft - Google Patents
Staggered rain-proof structure suitable for rotating shaft Download PDFInfo
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/54—Other sealings for rotating shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/023—Shafts; Axles made of several parts, e.g. by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth 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
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
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).
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)
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 |
-
2020
- 2020-04-08 CN CN202010270913.0A patent/CN111536244A/en active Pending
Patent Citations (9)
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 |