CN114962473A - High-elasticity crowned tooth coupling with large inclination angle - Google Patents
High-elasticity crowned tooth coupling with large inclination angle Download PDFInfo
- Publication number
- CN114962473A CN114962473A CN202210647134.7A CN202210647134A CN114962473A CN 114962473 A CN114962473 A CN 114962473A CN 202210647134 A CN202210647134 A CN 202210647134A CN 114962473 A CN114962473 A CN 114962473A
- Authority
- CN
- China
- Prior art keywords
- sealing
- gear sleeve
- ring
- sleeve
- rings
- 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.)
- Granted
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/18—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth
- F16D3/185—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth radial teeth connecting concentric inner and outer coupling parts
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/64—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts
- F16D3/66—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts the elements being metallic, e.g. in the form of coils
-
- 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
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Gears, Cams (AREA)
Abstract
The invention relates to a high-elasticity crowned tooth coupling with a large inclination angle. The technical problems that large-dip-angle sealing is not tight, lubricant is easy to leak and transmission is unstable in the existing drum-shaped tooth type coupling are mainly solved. The technical scheme adopted by the invention is as follows: a high-elasticity crowned tooth coupling with a large inclination angle comprises two end covers, a large spring, an outer hexagon bolt, a plurality of small springs, two inner gear rings, two sealing gaskets, a plurality of inner hexagon bolts, an angle compensation ring, a sealing ring, two buckling plates and an outer tooth sleeve; the outer gear sleeve is characterized in that drum-shaped teeth are symmetrically arranged on the outer surfaces of the left side and the right side of the outer gear sleeve, the two buckling plates are respectively arranged on two end surfaces of the outer gear sleeve, the sealing rings are arranged in sealing grooves formed in two ends of the outer gear sleeve, the two inner gear rings are respectively arranged on two sides of the outer gear sleeve and enable inner teeth of the inner gear rings to be meshed with the drum-shaped teeth of the outer gear sleeve, the angle compensation ring is arranged in a U-shaped groove of the outer gear sleeve, and the two end covers are respectively connected with the closed ends of the two inner gear rings through outer hexagon bolts.
Description
Technical Field
The invention belongs to the technical field of tooth type couplings, and particularly relates to a high-elasticity crowned tooth coupling with a large inclination angle.
Background
The drum-shaped tooth type coupling belongs to a flexible coupling without an elastic element, can realize the compensation of axial, radial and angular equiaxial line deviation, has the advantages of compact structure, small turning radius, large bearing capacity, high transmission efficiency and the like, and is widely applied to the fields of metallurgy, rail transit, marine ships, hoisting transportation, aerospace and the like. However, the current crowned tooth coupling has the problems of poor sealing, easy leakage of lubricant and the like under the working condition of large inclination angle, and the service performance and the service life of the crowned tooth coupling are seriously reduced; the feedback of the crowned tooth coupling without the elastic element to the vibration can be transmitted or transmitted after amplification, the stability of a transmission system is seriously influenced, and the gear teeth are abraded and failed and simultaneously cause the fault of the transmission system.
Disclosure of Invention
The invention aims to solve the technical problems of poor sealing at a large inclination angle, easy leakage of a lubricant and unstable transmission of the existing crowned tooth type coupling, and provides a high-elasticity crowned tooth coupling with a large inclination angle.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a high-elasticity crowned tooth coupling with a large inclination angle comprises two end covers, a large spring, an outer hexagon bolt, a plurality of small springs, two inner gear rings, two sealing gaskets, a plurality of inner hexagon bolts, an angle compensation ring, a sealing ring, two buckling plates and an outer tooth sleeve; the outer gear sleeve is characterized in that drum-shaped teeth are symmetrically arranged on the outer surfaces of the left side and the right side of the outer gear sleeve, a U-shaped groove is arranged in the middle of the outer surface of the outer gear sleeve, sealing grooves are arranged on two end surfaces of the outer gear sleeve, the two buckling plates are respectively arranged on two end surfaces of the outer gear sleeve, bosses arranged on the inner surface edges of the buckling plates are positioned in the sealing grooves, sealing rings are arranged in the sealing grooves arranged at two ends of the outer gear sleeve, the two inner gear rings are respectively arranged at two sides of the outer gear sleeve, the inner teeth of the inner gear rings are meshed with the drum-shaped teeth of the outer gear sleeve, the angle compensation ring is arranged in the U-shaped groove of the outer gear sleeve, two ends of the angle compensation ring are respectively connected with the open ends of the two inner gear rings through a plurality of hexagon socket bolts, the sealing gasket is arranged between the angle compensation ring and the open ends of the inner gear rings so as to be convenient for sealing, and the large spring and the small springs are arranged between the inner surface of the closed end of the inner gear rings and the buckling plate, and the two ends of the large spring are respectively arranged on a large spring fixing seat arranged at the center of the inner surface of the closed end of the inner gear ring and a large spring boss arranged at the center of the outer surface of the buckle plate, the two ends of the plurality of small springs are respectively arranged on a small spring fixing seat arranged at the inner surface of the closed end of the inner gear ring and a small spring boss arranged at the outer surface of the buckle plate, and the two end covers are respectively connected with the closed ends of the two inner gear rings through outer hexagon bolts.
Further, the ring gear is one end opening, the other end confined tourus, be equipped with the internal tooth on the internal surface of tourus, the center of tourus blind end internal surface is equipped with big spring fixing base, the periphery of big spring fixing base evenly is equipped with a plurality of little spring fixing bases, the tourus is close to blind end internal surface department and is equipped with the oil filler point.
Furthermore, the angle compensation ring is an annular body made of a metal material, U-shaped grooves are formed in the outer surface of the annular body, through holes are formed in the periphery of the end face of the angle compensation ring, and the number of the U-shaped grooves is larger than or equal to 2.
Furthermore, the center of the outer surface of the buckle plate is provided with a large spring boss, a plurality of small spring bosses are uniformly arranged on the periphery of the large spring boss and correspond to the small spring fixing seats, and bosses are arranged on the edge of the inner surface of the buckle plate.
The invention has the beneficial effects that:
(1) the invention ensures that the drum-shaped tooth type coupling still keeps good sealing performance under a large inclination angle;
(2) the elastic unit is additionally arranged and acts between the inner gear ring and the outer gear sleeve, so that the vibration damping performance of the system can be improved, and the stability of the transmission system is improved;
(3) the sealing compensation ring is made of metal materials, the design of the U-shaped groove can ensure sufficient inclination angle compensation, and meanwhile, compared with the traditional non-metal (rubber, plastic and the like) materials, the metal has better service performance in the environment with high rotating speed, high temperature, high pressure and high humidity;
(4) the connection mode of the end cover and the transmission shaft can be adjusted according to the actual structure, and key-free connection, key connection and the like can be realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the ring gear of the present invention;
FIG. 3 is a schematic structural view of the outer shell of the present invention;
FIG. 4 is a schematic view of the structure of the angle compensation ring of the present invention;
fig. 5 is a power transmission path diagram of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1 to 4, the high-elasticity crowned tooth coupling with a large inclination angle in the present embodiment includes two end caps 1, two large springs 2, a plurality of outer hexagon bolts 3, a plurality of small springs 4, two inner gear rings 5, two sealing gaskets 6, a plurality of inner hexagon bolts 7, an angle compensation ring 8, two sealing rings 9, two buckling plates 10, and an outer gear sleeve 11; the outer surface of the left side and the outer surface of the right side of the outer gear sleeve 11 are symmetrically provided with crown teeth 11b, the middle part of the outer surface of the outer gear sleeve 11 is provided with a U-shaped groove 11c, two end faces of the outer gear sleeve 11 are provided with seal grooves 11a, the two pinch plates 10 are respectively arranged on the two end faces of the outer gear sleeve 11 and enable bosses 10c arranged on the inner surface edges of the pinch plates 10 to be positioned in the seal grooves 11a, the seal rings 9 are arranged in the seal grooves 11a arranged at the two ends of the outer gear sleeve 11 to enable the inner cavity of the outer gear sleeve 11 to form a seal space 13, the two inner gear rings 5 are respectively arranged on the two sides of the outer gear sleeve 11 and enable the inner teeth 5c of the inner gear ring 5 to be meshed with the crown teeth 11b of the outer gear sleeve 11, the angle compensation ring 8 is arranged in the U-shaped groove of the outer gear sleeve 11, the two ends of the angle compensation ring are respectively connected with the open ends of the two inner gear rings 5 through a plurality of hexagon socket bolts 7, the seal gasket 6 is arranged between the open ends of the angle compensation ring 8 and the inner gear ring 5 to facilitate sealing, the large spring 2 and the small springs 4 are arranged between the inner surface of the closed end of the inner gear ring 5 and the outer surface of the buckle plate 10, two ends of the large spring 2 are respectively arranged on a large spring fixing seat arranged at the center of the inner surface of the closed end of the inner gear ring 5 and a large spring boss arranged at the center of the outer surface of the buckle plate 10, two ends of the small springs 4 are respectively arranged on a small spring fixing seat arranged on the inner surface of the closed end of the inner gear ring 5 and a small spring boss arranged on the outer surface of the buckle plate 10, and the two end covers 1 are respectively connected with the closed ends of the two inner gear rings 5 through the outer hexagon bolts 3.
The end cover 1 is composed of an end cover connecting shaft 1a and an end cover flange 1c, the end cover connecting shaft 1a is arranged in the center of the end cover flange 1c, the end cover connecting shaft 1a is fixedly connected with the end cover flange 1c, and a hollow cavity 1b is formed in the middle of the end cover connecting shaft 1 a. The end cover connecting shaft 1a can be connected with a transmission system in a key-free connection mode or a key connection mode and the like according to actual requirements. The inner surface of the end cover flange 1c needs to be subjected to friction increasing treatment.
The angle compensation ring 8 is an annular body made of a metal material, a U-shaped groove 8a is formed in the outer surface of the annular body, through holes 8b are formed in the periphery of the end face of the angle compensation ring 8, and the number of the U-shaped grooves 8a is more than or equal to 2; the width l of the U-shaped groove 8a should be calculated according to the designed inner ring diameter D and the offset angle α: l is D · sin α + L, where L is the precompression L of the large and small springs.
The buckle plate is characterized in that a large spring boss 10a is arranged at the center of the outer surface of the buckle plate 10, 6 small spring bosses 10b are evenly arranged on the periphery of the large spring boss 10a, the small spring bosses 10b correspond to the small spring fixing seats 5b, and bosses 10c are arranged on the inner surface edge of the buckle plate 10.
The working process of the invention is as follows:
when the invention is installed to a transmission system, firstly, a tool is adopted to compress the two inner gear rings 5, the large spring 2 and the small spring 4 are adjusted to be in a compressed state according to the actual working condition, then the end cover connecting shaft 1a and the system transmission shaft are connected, and finally, the inner gear rings 5 are loosened, so that the large spring and the small spring are ensured to have axial initial elasticity, on one hand, the vibration damping effect is ensured, and on the other hand, the auxiliary outer gear sleeve is always positioned in a working area. And lubricating oil is filled into the coupler through the oil filling hole 12 on the inner gear ring 5 after the installation is finished.
As shown in fig. 5, power of the transmission system is firstly input from an end cover connecting shaft 1a of the left end cover 1, the power is output from the left end cover 1 to the left inner gear ring 5 through the outer hexagon bolt 3, the left inner gear ring 5 transmits power with the left crown gear 11b of the outer gear sleeve 11 through the inner gear 5c, then the power is output from the right crown gear 11b of the outer gear sleeve 11 to the right inner gear ring 5, and finally the power is output from the right end cover 1. Wherein, when power is transmitted to the outer gear sleeve 11, unstable elements such as vibration mixed in the power can act on the large spring 2 and the small spring 4 through the pinch plate 10, part of unstable characteristics in the power are filtered, and the transmission stability is increased.
Claims (4)
1. A high-elasticity crowned tooth coupling with a large inclination angle is characterized by comprising two end covers (1), a large spring (2), an outer hexagon bolt (3), a plurality of small springs (4), two inner gear rings (5), two sealing gaskets (6), a plurality of inner hexagon bolts (7), an angle compensation ring (8), a sealing ring (9), two buckling plates (10) and an outer tooth sleeve (11); the outer gear sleeve (11) is symmetrically provided with crowned teeth (11b) on the outer surfaces of the left side and the right side, the middle part of the outer surface of the outer gear sleeve (11) is provided with a U-shaped groove, two end surfaces of the outer gear sleeve (11) are provided with sealing grooves (11a), the two buckling plates (10) are respectively arranged on the two end surfaces of the outer gear sleeve (11) and enable bosses (10c) arranged on the inner surface edges of the buckling plates (10) to be positioned in the sealing grooves (11a), the sealing rings (9) are arranged in the sealing grooves (11a) arranged at the two ends of the outer gear sleeve (11), the two inner gear rings (5) are respectively arranged on the two sides of the outer gear sleeve (11) and enable inner teeth (5c) of the inner gear rings (5) to be meshed with the crowned teeth (11b) of the outer gear sleeve (11), the angle compensation ring (8) is arranged in the U-shaped groove of the outer gear sleeve (11), and the two ends of the angle compensation ring are respectively connected with the open ends of the two inner gear rings (5) through a plurality of hexagon socket bolts (7), the sealing gasket (6) is arranged between an angle compensation ring (8) and the opening end of the inner gear ring (5) to facilitate sealing, the large spring (2) and the small springs (4) are arranged between the inner surface of the closed end of the inner gear ring (5) and the outer surface of the buckle plate (10), two ends of the large spring (2) are respectively arranged on a large spring fixing seat arranged at the center of the inner surface of the closed end of the inner gear ring (5) and a large spring boss arranged at the center of the outer surface of the buckle plate (10), two ends of the small springs (4) are respectively arranged on a small spring fixing seat arranged at the inner surface of the closed end of the inner gear ring (5) and a small spring boss arranged at the outer surface of the buckle plate (10), and the two end covers (1) are respectively connected with the closed ends of the two inner gear rings (5) through the outer hexagon bolts (3).
2. The high-elasticity crowned tooth coupling with the large inclination angle of claim 1, wherein the inner gear ring (5) is a torus with one open end and the other closed end, inner teeth (5c) are arranged on the inner surface of the torus, a large spring fixing seat (5a) is arranged at the center of the inner surface of the closed end of the torus, a plurality of small spring fixing seats (5b) are uniformly arranged on the periphery of the large spring fixing seat (5a), and oil filling holes (12) are arranged on the torus close to the inner surface of the closed end.
3. The high-inclination-angle high-elasticity crowned tooth coupling according to claim 1, characterized in that the angle compensation ring (8) is an annular body made of a metal material, a U-shaped groove (8a) is formed on the outer surface of the annular body, a through hole (8b) is formed on the periphery of the end face of the angle compensation ring (8), and the number of the U-shaped grooves (8a) is more than or equal to 2.
4. The high-elasticity crowned tooth coupling with the large inclination angle of claim 1, characterized in that the center of the outer surface of the pinch plate (10) is provided with a large spring boss (10a), the periphery of the large spring boss (10a) is uniformly provided with a plurality of small spring bosses (10b), the small spring bosses (10b) correspond to the small spring fixing seats (5b), and the inner surface edge of the pinch plate (10) is provided with a boss (10 c).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210647134.7A CN114962473B (en) | 2022-06-09 | 2022-06-09 | High elasticity crowned tooth shaft coupling of big inclination |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210647134.7A CN114962473B (en) | 2022-06-09 | 2022-06-09 | High elasticity crowned tooth shaft coupling of big inclination |
Publications (2)
Publication Number | Publication Date |
---|---|
CN114962473A true CN114962473A (en) | 2022-08-30 |
CN114962473B CN114962473B (en) | 2023-10-20 |
Family
ID=82970751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210647134.7A Active CN114962473B (en) | 2022-06-09 | 2022-06-09 | High elasticity crowned tooth shaft coupling of big inclination |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114962473B (en) |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2052681C1 (en) * | 1991-05-12 | 1996-01-20 | Арендное предприятие "Завод Кинофотоматериалов" Производственного объединения "Тасма" | Device for connecting two misaligned shafts |
CN201461754U (en) * | 2009-07-15 | 2010-05-12 | 重庆齿轮箱有限责任公司 | Connecting flange type barreled tooth coupling |
CA2739221A1 (en) * | 2010-05-06 | 2011-11-06 | The Switch Drive Systems Oy | An electromechanical device |
CN105422659A (en) * | 2015-12-04 | 2016-03-23 | 镇江市润州联轴器厂 | Tooth coupling |
DE102016221088A1 (en) * | 2016-10-26 | 2018-04-26 | Bayerische Motoren Werke Aktiengesellschaft | Angle compensation device for a tool |
CN207349292U (en) * | 2017-09-28 | 2018-05-11 | 泰尔重工股份有限公司 | A kind of curved surface dynamic sealing crown gear coupling |
EP3379106A1 (en) * | 2017-03-23 | 2018-09-26 | Cordrive Ab | Compound planet gear arrangement and gear wheel arrangement |
CN212337938U (en) * | 2020-06-05 | 2021-01-12 | 泰尔重工股份有限公司 | Drum-shaped tooth connecting shaft end cover structure |
CN112739467A (en) * | 2020-12-14 | 2021-04-30 | 泰尔重工股份有限公司 | Bearing seat assembly, finishing mill crowned tooth connecting shaft using bearing seat assembly and balancing device for crowned tooth connecting shaft |
CN215171659U (en) * | 2021-07-12 | 2021-12-14 | 广州泽尔机电科技有限公司 | Corrugated pipe sealing structure and tooth type coupling using same |
CN216199945U (en) * | 2021-11-09 | 2022-04-05 | 福建罗源闽光钢铁有限责任公司 | Drum-shaped tooth type coupling |
-
2022
- 2022-06-09 CN CN202210647134.7A patent/CN114962473B/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2052681C1 (en) * | 1991-05-12 | 1996-01-20 | Арендное предприятие "Завод Кинофотоматериалов" Производственного объединения "Тасма" | Device for connecting two misaligned shafts |
CN201461754U (en) * | 2009-07-15 | 2010-05-12 | 重庆齿轮箱有限责任公司 | Connecting flange type barreled tooth coupling |
CA2739221A1 (en) * | 2010-05-06 | 2011-11-06 | The Switch Drive Systems Oy | An electromechanical device |
CN105422659A (en) * | 2015-12-04 | 2016-03-23 | 镇江市润州联轴器厂 | Tooth coupling |
DE102016221088A1 (en) * | 2016-10-26 | 2018-04-26 | Bayerische Motoren Werke Aktiengesellschaft | Angle compensation device for a tool |
EP3379106A1 (en) * | 2017-03-23 | 2018-09-26 | Cordrive Ab | Compound planet gear arrangement and gear wheel arrangement |
CN207349292U (en) * | 2017-09-28 | 2018-05-11 | 泰尔重工股份有限公司 | A kind of curved surface dynamic sealing crown gear coupling |
CN212337938U (en) * | 2020-06-05 | 2021-01-12 | 泰尔重工股份有限公司 | Drum-shaped tooth connecting shaft end cover structure |
CN112739467A (en) * | 2020-12-14 | 2021-04-30 | 泰尔重工股份有限公司 | Bearing seat assembly, finishing mill crowned tooth connecting shaft using bearing seat assembly and balancing device for crowned tooth connecting shaft |
CN215171659U (en) * | 2021-07-12 | 2021-12-14 | 广州泽尔机电科技有限公司 | Corrugated pipe sealing structure and tooth type coupling using same |
CN216199945U (en) * | 2021-11-09 | 2022-04-05 | 福建罗源闽光钢铁有限责任公司 | Drum-shaped tooth type coupling |
Also Published As
Publication number | Publication date |
---|---|
CN114962473B (en) | 2023-10-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP4005845A1 (en) | Fixing structure for auxiliary bearing of electric drive assembly, and electric drive assembly | |
CN212959552U (en) | Sealing structure of bearing for belt pulley of decoupler built in automobile generator | |
CN114962473B (en) | High elasticity crowned tooth shaft coupling of big inclination | |
CN211117492U (en) | Locomotive speed reducer axle sealing structure | |
CN102797763A (en) | Novel hydraulic expansion sleeve | |
CN2483560Y (en) | Pressure-compensation type radical sealing device | |
CN215171659U (en) | Corrugated pipe sealing structure and tooth type coupling using same | |
CN209943368U (en) | Drum gear | |
CN211231527U (en) | Mechanical reduction gearbox lubricating oil combination sealing device | |
CN210317739U (en) | Double-sealing screw pump capable of reducing noise and energy consumption | |
AU2018455574B2 (en) | Drum gear | |
CN216111811U (en) | Forced transmission gear coupling | |
CN220268433U (en) | Cross shaft seal structure of grinding roller support arm of medium-speed coal mill | |
CN202228681U (en) | Combined oil seal | |
CN219692047U (en) | Transmission output flange sealing structure | |
CN220379169U (en) | Self-sealing rotary compensator | |
CN219932951U (en) | Rotary shaft sealing element | |
CN216975027U (en) | Marine diesel engine and free end power output device thereof | |
CN210106544U (en) | Worm wheel end cover applied to worm gear reducer | |
CN221423861U (en) | Double-lip fluororubber oil seal with spring | |
CN213929445U (en) | Extrusion sealing O-shaped ring | |
CN217683766U (en) | Leak protection type flange that gas tightness is good | |
CN210769800U (en) | Gear shaft with dustproof cover | |
CN115354713B (en) | Self-lubricating metal spring coupling applicable to various working conditions for hydraulic excavator | |
CN218948851U (en) | Loading machine driving axle housing assembly |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant |