CN109208683B - Slewing bearing Huang Youchi sealing structure and excavator - Google Patents
Slewing bearing Huang Youchi sealing structure and excavator Download PDFInfo
- Publication number
- CN109208683B CN109208683B CN201811280766.4A CN201811280766A CN109208683B CN 109208683 B CN109208683 B CN 109208683B CN 201811280766 A CN201811280766 A CN 201811280766A CN 109208683 B CN109208683 B CN 109208683B
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- sealing ring
- plate
- sealing
- pool
- oil pool
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The application discloses a slewing bearing Huang Youchi sealing structure and an excavator, wherein the slewing bearing butter pool sealing structure comprises an upper circular plate of an oil pool, a slewing connector fixing plate, an oil pool sealing ring, a sealing ring support, an upper sealing plate, an upper cover plate and a slewing connector sealing ring, the upper circular plate of the oil pool is fixed inside a cylinder of the butter pool, the slewing connector fixing plate is fixed on the upper surface of the upper circular plate of the oil pool, the sealing ring support is fixed on the slewing connector fixing plate, the oil pool sealing ring is connected with the sealing ring support, the upper sealing plate is fixed on a turntable plate, the upper end of the oil pool sealing ring is tightly attached to the lower part of the upper sealing plate, the inner side of the slewing connector sealing ring is sleeved on the outer circumference of the slewing connector, and the outer side of the slewing connector sealing ring is fixed on the upper cover plate. The slewing bearing butter pool sealing structure of the excavator adopts a double sealing structure of the oil pool sealing ring and the slewing connector sealing ring, has good sealing effect and is convenient to maintain and replace.
Description
Technical Field
The application relates to the technical field of mechanical equipment, in particular to a slewing bearing Huang Youchi sealing structure and an excavator.
Background
The internal meshing type slewing bearing of the mechanical gear is an essential key component of the excavator, and an oil storage component-Huang Youchi which is suitable for the internal meshing type slewing bearing of the mechanical gear is required to be arranged for ensuring lubrication during working slewing; huang Youchi is stored with enough lubricating grease, so that dust prevention and pollution prevention are important in order to avoid abnormal abrasion of the rotary gear caused by the entry of foreign matters; because of the special structure of the excavator, the upper turntable and the lower frame are connected through a slewing bearing and a bolt, and the walking is driven by hydraulic pressure; the running and steering oil supply is realized through a rotary joint fixed in the middle of the butter pool; sand and dust mainly enter the butter pool from the middle part, and the gap between the butter pool and the upper turntable must be sealed and dustproof.
The sealing component of the existing butter pool is mainly characterized in that rubber sealing strips are embedded into the butter pool vertical rings between the upper and lower vehicles, and after the upper rotary table and the lower vehicle frame are combined into a whole machine, the sealing strips on the Huang Youchi vertical rings are tightly pressed through the lower bottom plate of the upper rotary table to seal and prevent dust of the butter pool.
The sealing assembly of the above-mentioned butter pool has the following disadvantages: 1. the maintenance and replacement are extremely inconvenient: the sealing strip embedded on the vertical ring is positioned in the gap between the upper turntable and the lower turntable, the space is quite small, and the sealing strip can be replaced only after the connecting bolt at the slewing bearing is detached and then the upper turntable is lifted by the crane handle when the sealing strip is required to be replaced correctly. 2. The sealing effect and quality are difficult to control due to inconvenient observation. 3. When the rubber strip is assembled improperly or due to its own quality, the rubber strip may cause abnormal damage and fall off, and when the crumb enters the grease pool, a failure of the drive teeth may occur.
Disclosure of Invention
The application aims to provide a slewing bearing Huang Youchi sealing structure which is good in sealing effect and convenient to maintain and replace.
The application further aims to provide the excavator, which has good sealing effect of the slewing bearing butter pool and is convenient to maintain and replace.
The application is realized by the following technical scheme:
the first aspect of the application provides a slewing bearing Huang Youchi sealing structure, which comprises an upper circular plate of an oil pool, a slewing connector fixing plate, an oil pool sealing ring, a sealing ring bracket, an upper sealing plate, an upper cover plate and a slewing connector sealing ring;
the upper circular plate of the oil pool is fixed in the butter pool cylinder, and the upper surface of the upper circular plate of the oil pool is lower than the upper surface of the butter pool cylinder;
the rotary joint fixing plate is fixed on the upper surface of the circular plate on the oil pool;
the sealing ring support is fixed on the rotary joint fixing plate, and the oil pool sealing ring is connected with the sealing ring support;
the upper sealing plate is fixed on the rotating table plate, and the upper end of the oil pool sealing ring is tightly attached to the lower part of the upper sealing plate;
the inner side of the rotary joint sealing ring is sleeved on the outer circumference of the rotary joint, and the outer side of the rotary joint sealing ring is fixed on the upper cover plate.
The slewing bearing butter pool sealing structure further comprises a first gasket and a second gasket, wherein the first gasket is arranged between the sealing ring support and the slewing connector fixing plate, and the second gasket is arranged between the upper sealing plate and the turntable plate.
The slewing bearing Huang Youchi sealing structure is characterized in that a sewage draining hole is formed in the slewing connector fixing plate.
The slewing bearing Huang Youchi sealing structure comprises the oil pool sealing ring, wherein the oil pool sealing ring is provided with a first groove, the sealing ring bracket is provided with a protrusion matched with the first groove, and the first groove is inserted into the protrusion.
The slewing bearing Huang Youchi seal is formed by arranging an adhesive in the first groove.
As described above, the slewing bearing Huang Youchi seal structure has the extension portion facing the center of the oil pool seal ring at the upper portion thereof, and the extension portion is pressed against the lower portion of the upper seal plate.
The slewing bearing Huang Youchi sealing structure comprises the slewing connector sealing ring, wherein the outer side of the slewing connector sealing ring is provided with the second groove, the inner side of the slewing connector sealing ring is sleeved on the outer circumference of the slewing connector, and the upper cover plate is clamped in the second groove.
The slewing bearing Huang Youchi is provided with a circular retainer ring at the lower part of the upper sealing plate.
A second aspect of the present application provides an excavator comprising a slewing bearing Huang Youchi seal as described above.
The sealing structure of the slewing bearing butter pool comprises an oil pool upper circular plate, a slewing connector fixing plate, an oil pool sealing ring, a sealing ring support, an upper sealing plate, an upper cover plate and a slewing connector sealing ring, wherein the oil pool upper circular plate is fixed inside a butter pool cylinder, the upper surface of the oil pool upper circular plate is lower than that of the butter pool cylinder, the slewing connector fixing plate is fixed on the upper surface of the oil pool upper circular plate, the sealing ring support is fixed on the slewing connector fixing plate, the oil pool sealing ring is connected with the sealing ring support, the upper sealing plate is fixed on a turntable plate, the upper end of the oil pool sealing ring is tightly attached to the lower part of the upper sealing plate, the inner side of the slewing connector sealing ring is sleeved on the outer circumference of the slewing connector, the outer side of the slewing connector sealing ring is fixed on the upper cover plate, the sealing structure of the slewing bearing butter pool is a double sealing structure of the oil pool sealing ring and the slewing connector sealing ring, and the sealing effect is good, and the butter pool sealing ring is convenient to maintain and replace.
The sealing structure of the slewing bearing butter pool of the excavator adopts a double sealing structure of the butter pool sealing ring and the slewing connector sealing ring, has good sealing effect and is convenient to maintain and replace.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a conventional slewing bearing Huang Youchi seal structure;
fig. 2 is a schematic diagram of a sealing structure of a slewing bearing Huang Youchi according to an embodiment of the present application;
FIG. 3 is a schematic view of a seal structure of a slewing bearing Huang Youchi according to an embodiment of the present application;
fig. 4 is a schematic diagram of an oil pool sealing ring in a slewing bearing Huang Youchi sealing structure according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a seal ring of a rotary joint in a seal structure of a rotary support Huang Youchi according to an embodiment of the application.
Reference numerals illustrate:
1-a circular plate on an oil pool; 2-a swivel joint fixing plate;
3-an oil pool sealing ring; 4-a seal ring bracket;
5-an upper sealing plate; 6-an upper cover plate;
7-a rotary joint sealing ring; 8-butter Chi Yuantong;
9-a rotating platen; 10-a first gasket;
11-a second gasket; 12-a swivel joint;
13-Huang Youchi; 14-a circular retainer ring;
31-a first groove; 32-extensions;
71-second groove.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
It should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or positional relationship based on that shown in the drawings, and are merely for convenience in describing and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
Fig. 1 is a schematic diagram of a sealing structure of a conventional slewing bearing Huang Youchi, and referring to fig. 1, a sealing assembly of a conventional butter pool is mainly formed by embedding a rubber sealing strip on a butter pool vertical ring between an upper car and a lower car, combining an upper turntable and a lower car into a whole machine, and tightly pressing the sealing strip on the Huang Youchi vertical ring through a lower bottom plate of the upper turntable to seal and prevent dust of the butter pool.
The sealing assembly of the above-mentioned butter pool has the following disadvantages: 1. the maintenance and replacement are extremely inconvenient: the sealing strip embedded on the vertical ring is positioned in the gap between the upper turntable and the lower turntable, the space is quite small, and the sealing strip can be replaced only after the connecting bolt at the slewing bearing is detached and then the upper turntable is lifted by the crane handle when the sealing strip is required to be replaced correctly. 2. The sealing effect and quality are difficult to control due to inconvenient observation. 3. When the rubber strip is assembled improperly or due to its own quality, the rubber strip may cause abnormal damage and fall off, and when the crumb enters the grease pool, a failure of the drive teeth may occur.
The application provides a slewing bearing Huang Youchi sealing structure and an excavator based on the above problems.
Some terms in the present application are explained below for understanding by those skilled in the art.
The slewing bearing Huang Youchi sealing structure and the excavator provided by the application are described in detail below with reference to specific embodiments.
Embodiment one:
fig. 2 is a schematic diagram of a seal structure of a slewing bearing Huang Youchi provided by an embodiment of the present application, and fig. 3 is a schematic diagram of an installation structure of a seal structure of a slewing bearing Huang Youchi provided by an embodiment of the present application, referring to fig. 2 and 3, the embodiment provides a seal structure of a slewing bearing grease pool, where the seal structure of the slewing bearing grease pool includes a disc 1 on the grease pool, a fixing plate 2 for a slewing joint, a sealing ring 3 for the grease pool, a sealing ring bracket 4, an upper sealing plate 5, an upper cover plate 6, and a sealing ring 7 for the slewing joint;
the upper circular plate 1 of the oil pool is fixed in the butter pool cylinder, and the upper surface of the upper circular plate 1 of the oil pool is lower than the upper surface of the butter pool cylinder 8; in this embodiment, grease is provided on the outside of the butter pool cylinder 8 for lubricating the rotary gear, the rotary joint is installed in the butter pool cylinder 8, and the disc 1 on the oil pool is fixed in the butter pool cylinder, and the material and the fixing form of the disc on the oil pool are not particularly limited, for example, may be iron plates.
The swivel joint fixing plate 2 is fixed on the upper surface of the upper circular plate 1 of the oil pool, and the fixing manner of the swivel joint fixing plate 2 is not particularly limited in this embodiment.
The sealing ring support 4 is fixed on the rotary joint fixing plate 2, the oil pool sealing ring 3 is connected with the sealing ring support 4, in this embodiment, the sealing support 4 is used for supporting the oil pool sealing ring 3, and the oil pool sealing ring 3 is used for sealing and preventing dust.
The upper sealing plate 5 is fixed on the rotating platen 9, the upper end of the oil pool sealing ring 3 is tightly attached to the lower part of the upper sealing plate 5, and the rotating platen 9 of the embodiment is provided with a main body of the engineering machine.
The inner side of the rotary joint sealing ring 7 is sleeved on the outer circumference of the rotary joint 12, the outer side of the rotary joint sealing ring 7 is fixed on the upper cover plate 6, and dust, dirt and the like are prevented from entering the machine body from the installation gap of the rotary joint by the arrangement of the rotary joint sealing ring 7.
When the oil pool sealing ring 3 needs to be maintained and replaced, the application can be realized by removing the upper cover plate 6 and the upper sealing plate 5, and the huge engineering link and cost that the upper part of the machine body of the rotating table plate needs to be lifted and separated from the lower vehicle can be realized.
The sealing structure of the slewing bearing butter pool comprises an oil pool upper circular plate, a slewing connector fixing plate, an oil pool sealing ring, a sealing ring support, an upper sealing plate, an upper cover plate and a slewing connector sealing ring, wherein the oil pool upper circular plate is fixed inside a butter pool cylinder, the upper surface of the oil pool upper circular plate is lower than that of the butter pool cylinder, the slewing connector fixing plate is fixed on the oil pool upper circular plate upper surface, the sealing ring support is fixed on the slewing connector fixing plate, the oil pool sealing ring is connected with the sealing ring support, the upper sealing plate is fixed on a turntable plate, the upper end of the oil pool sealing ring is tightly attached to the lower part of the upper sealing plate, the inner side of the slewing connector sealing ring is sleeved on the outer circumference of the slewing connector, the outer side of the slewing connector sealing ring is fixed on the upper cover plate, the sealing structure of the slewing bearing butter pool adopts a double sealing structure of the oil pool sealing ring and the slewing connector sealing ring, and the sealing effect is good, and the butter pool sealing ring is convenient to repair and replace.
Further, the present embodiment further includes a first gasket 10 and a second gasket 11, the first gasket 10 is disposed between the seal ring bracket 4 and the swivel joint fixing plate 2, and the second gasket 11 is disposed between the upper seal plate 5 and the turntable plate.
Further, a drain hole is formed in the swivel joint fixing plate 2. When the rotary joint 12 works, oil can be discharged from a reserved drain hole of the rotary joint fixing plate 2 due to failure and oil leakage, so that the oil tank 13 is not polluted; meanwhile, a drain hole with proper size is reserved, so that upward rebound of ground dust can be effectively prevented during operation.
Fig. 4 is a schematic diagram of an oil pool sealing ring in a slewing bearing Huang Youchi sealing structure provided by an embodiment of the application, referring to fig. 4, in this embodiment, the oil pool sealing ring 3 has a first groove 31 opened toward a sealing ring support 4, the sealing ring support 4 has a protrusion matched with the first groove 31, and the first groove 31 is inserted into the protrusion. In this embodiment, the oil pool sealing ring 3 is matched with the sealing ring support 4 by arranging a groove, the matching mode is tight, the sealing effect between the oil pool sealing ring 3 and the sealing ring support 4 is further improved, the upper portion of the oil pool sealing ring 3 is provided with an extension portion 32 facing the center of the sealing ring, the extension portion 32 is compressed by the upper sealing plate 5 and then is clung to the lower portion of the upper sealing plate 5, and the sealing effect between the oil pool sealing ring 3 and the upper sealing plate 5 is further improved.
Further, the first groove is internally provided with the adhesive, and the sealing ring bracket 4 can be inserted into the first groove by arranging the adhesive in the first groove, so that the combination of the oil pool sealing ring 3 and the sealing ring bracket 4 is firmer, and the phenomenon that the oil pool sealing ring falls off in use is avoided. In particular, when the ambient temperature is lower, in order to increase the binding force of the oil pool sealing ring 3 and the sealing ring support 4, before the oil pool sealing ring 3 is assembled with the machine body, the oil pool sealing ring is firstly installed on the sealing ring support 4, and the sealing ring support 4 is heated by a heater to soften the oil pool sealing ring, so that the oil pool sealing ring 3 and the sealing ring support 4 are conveniently matched.
Fig. 5 is a schematic diagram of a rotary joint sealing ring in a rotary support Huang Youchi sealing structure provided by the embodiment of the application, referring to fig. 5, in this embodiment, a second groove 71 is provided on the outer side of the rotary joint sealing ring 7, the inner side of the rotary joint sealing ring 7 is sleeved on the outer circumference of the rotary joint 12, the upper cover plate 6 is clamped in the second groove 71, and the second groove 71 is provided on the outer side of the rotary joint sealing ring 7, so that the upper cover plate 6 is clamped in the second groove 71, the sealing effect between the rotary joint sealing ring 7 and the upper cover plate 6 is further improved, in this embodiment, the second groove 71 is a U-shaped groove, the specific material of the rotary joint sealing ring is not particularly limited, in this embodiment, the diameter of the upper portion of the rotary joint sealing ring 7 is smaller than the diameter of the lower portion of the rotary joint sealing ring 7, after the rotary joint sealing ring 7 is worn in the rotary joint rotation process, the service life of the rotary joint sealing ring 7 can be automatically compensated, and the service life of the rotary joint sealing ring 7 is improved.
Furthermore, a circular retainer ring 14 is disposed at the lower portion of the upper sealing plate 5, and by disposing the circular retainer ring 14, it is further prevented that floating dust, dirt, etc. in the environment accidentally invade the body, and in this embodiment, the circular retainer ring 14 is welded at the lower portion of the upper sealing plate 5.
Embodiment two:
the embodiment provides an excavator, which comprises the sealing structure of the slewing bearing grease pool in the embodiment one.
The oil pool sealing ring in the sealing structure of the slewing bearing oil pool of the excavator of the embodiment eliminates abnormal entry of dust, oil sludge and the like between the joint surfaces of the revolution bodies when the revolution joint rotates, the inner side of the revolution joint sealing ring is sleeved on the outer circumference of the revolution joint, the outer side of the revolution joint sealing ring is fixed on the upper cover plate, the double sealing effect is achieved, and when the oil pool sealing ring needs to be maintained and replaced, the upper cover plate and the sealing plate are removed, the turntable plate needs to be lifted up completely, and the huge engineering link and cost of replacement can be realized only by separating the turntable plate from a lower vehicle.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (9)
1. A slewing bearing Huang Youchi seal structure, characterized in that:
comprises an upper circular plate of an oil pool, a rotary joint fixing plate, an oil pool sealing ring, a sealing ring bracket, an upper sealing plate, an upper cover plate and a rotary joint sealing ring;
the upper circular plate of the oil pool is fixed in the butter pool cylinder, and the upper surface of the upper circular plate of the oil pool is lower than the upper surface of the butter pool cylinder;
the rotary joint fixing plate is fixed on the upper surface of the circular plate on the oil pool;
the sealing ring support is fixed on the rotary joint fixing plate, the oil pool sealing ring is connected with the sealing ring support, and the sealing ring support is used for supporting the oil pool sealing ring;
the upper sealing plate is fixed on the rotating table plate, and the upper end of the oil pool sealing ring is tightly attached to the lower part of the upper sealing plate;
the inner side of the rotary joint sealing ring is sleeved on the outer circumference of the rotary joint, and the outer side of the rotary joint sealing ring is fixed on the upper cover plate.
2. The slewing bearing Huang Youchi seal as defined in claim 1, further comprising:
the rotary joint fixing device further comprises a first gasket and a second gasket, wherein the first gasket is arranged between the sealing ring support and the rotary joint fixing plate, and the second gasket is arranged between the upper sealing plate and the rotary table plate.
3. The slewing bearing Huang Youchi seal as defined in claim 2, further comprising:
and a sewage draining hole is formed in the rotary joint fixing plate.
4. The slewing bearing Huang Youchi seal as set forth in claim 3, further comprising:
the oil pool sealing ring is provided with a first groove, the sealing ring support is provided with a protrusion matched with the first groove, and the first groove is inserted into the protrusion.
5. The slewing bearing Huang Youchi seal as defined in claim 4, further comprising:
an adhesive is disposed in the first recess.
6. The slewing bearing Huang Youchi seal as defined in claim 5, further comprising:
the upper part of the oil pool sealing ring is provided with an extension part facing the center of the sealing ring, and the extension part is pressed against the lower part of the upper sealing plate.
7. The slewing bearing Huang Youchi seal as defined in claim 5, further comprising:
the outer side of the rotary joint sealing ring is provided with a second groove, the inner side of the rotary joint sealing ring is sleeved on the outer circumference of the rotary joint, and the upper cover plate is clamped in the second groove.
8. The slewing bearing Huang Youchi seal as defined in claim 1, further comprising:
the lower part of the upper sealing plate is provided with a circular retainer ring.
9. An excavator, characterized in that: the excavator comprises the slewing bearing butter pool sealing structure of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280766.4A CN109208683B (en) | 2018-10-30 | 2018-10-30 | Slewing bearing Huang Youchi sealing structure and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280766.4A CN109208683B (en) | 2018-10-30 | 2018-10-30 | Slewing bearing Huang Youchi sealing structure and excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109208683A CN109208683A (en) | 2019-01-15 |
| CN109208683B true CN109208683B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811280766.4A Active CN109208683B (en) | 2018-10-30 | 2018-10-30 | Slewing bearing Huang Youchi sealing structure and excavator |
Country Status (1)
| Country | Link |
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| CN (1) | CN109208683B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323066B (en) * | 2021-05-31 | 2023-05-16 | 徐州徐工挖掘机械有限公司 | Grease pool waterproof structure of excavator swing mechanism |
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| CN109208683A (en) | 2019-01-15 |
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