CN213628489U - Waterproof maintenance-free turntable bearing - Google Patents
Waterproof maintenance-free turntable bearing Download PDFInfo
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- CN213628489U CN213628489U CN202022019532.3U CN202022019532U CN213628489U CN 213628489 U CN213628489 U CN 213628489U CN 202022019532 U CN202022019532 U CN 202022019532U CN 213628489 U CN213628489 U CN 213628489U
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Abstract
A waterproof maintenance-free turntable bearing comprises an outer ring, an inner ring, a rolling body, an isolation block, an assembling process hole plug and a taper pin, wherein the upper side and the lower side of a raceway surface of the inner ring are respectively provided with a sealing groove, and a Glare ring for a hole is arranged in each sealing groove; and a sealing ring for sealing the assembling process hole is arranged on the assembling process hole plug. The utility model discloses a hole is sealed with the axial of glary circle to the bearing raceway, adopts the assembly fabrication hole plug that has the sealing washer to seal the assembly fabrication hole to realized sealing comprehensively to the bearing raceway, improved slewing bearing's life. Because the utility model discloses a sealing performance is good, and lubricating grease can not be revealed, does not need to supply lubricating grease again in the use, consequently the utility model discloses also need not to set up the oil filler point, accomplished non-maintaining really, saved customer's maintenance cost and time.
Description
Technical Field
The utility model belongs to the technical field of the bearing technique and specifically relates to a waterproof non-maintaining carousel bearing is related to.
Background
The turntable bearing (also called as rotary bearing) is a large bearing capable of bearing larger axial load, radial load and overturning moment, integrates multiple functions of supporting, rotating, driving, fixing and the like, and is mainly applied to low-speed and heavy-load working occasions, such as: hoisting machinery, engineering machinery, mine metallurgy machinery, medical equipment, ships, radars, wind driven generators and other equipment.
The turntable bearing is usually horizontally installed, and is also vertically installed or obliquely installed in a few cases, the structural types of the turntable bearing mainly comprise a four-point contact ball bearing, a crossed cylindrical roller bearing, a three-row cylindrical roller combined bearing, a ball-column combined turntable bearing and the like, and the turntable bearing is usually low in rotating speed and high in precision, namely, the precision is more in a common level.
The turntable bearing for the host machine is vertically installed, works outdoors all the year round, is required to bear certain axial load, radial load and overturning moment, has lower rotating speed and no clamping stagnation in rotation, meets the requirement of starting friction moment under the condition of no load, and most importantly, the bearing has good waterproof performance, can not enter water in a raceway after being subjected to a rain or water immersion test, and has the service life of 20 years. As shown in figure 1, the bearing adopts a conventional butyronitrile oil-resistant rubber contact type end face sealing structure, an end face sealing ring 7 is easy to age after being exposed outside for a long time, and can play a certain dustproof and grease-leakage-proof function in the early stage of use, but still easily enters water in a raceway under the condition of meeting large rainwater or in the later stage of use, so that the real waterproof function cannot be realized, water enters the raceway to generate early corrosion or damage, and the service life of the bearing is shortened.
SUMMERY OF THE UTILITY MODEL
In order to overcome not enough in the background art, the utility model discloses a waterproof non-maintaining carousel bearing adopts following technical scheme:
a waterproof maintenance-free turntable bearing comprises an outer ring, an inner ring, a rolling body, an isolation block, an assembling process hole plug and a taper pin, wherein the upper side and the lower side of a raceway surface of the inner ring are respectively provided with a sealing groove, and a Glare ring for a hole is arranged in each sealing groove; and a sealing ring is arranged on the assembling process hole plug.
The technical scheme is further improved, an upper boss is arranged at the upper part of the inner ring, a lower boss is arranged at the lower part of the outer ring, and the upper boss and the lower boss are used for extending the sealing surface between the outer ring and the inner ring.
The technical scheme is further improved, and a taper pin hole is formed in the middle of the assembling process hole plug; the number of the sealing rings is two, and the two sealing rings are respectively arranged on two sides of the taper pin hole.
Further improve technical scheme, the material of spacing block is nylon.
The technical scheme is further improved, and lubricating grease is filled between the outer ring and the inner ring.
The technical scheme is further improved, and the rolling bodies are steel balls or cylindrical rollers.
Owing to adopt above-mentioned technical scheme, compare the background art, the utility model discloses following beneficial effect has:
the turntable bearing adopts the GREEN ring for sealing the axial direction of the bearing raceway and adopts the assembling process hole plug with the sealing ring to seal the assembling process hole, thereby realizing the comprehensive sealing of the bearing raceway and prolonging the service life of the turntable bearing.
Because the sealing performance of the turntable bearing is good, lubricating grease can not be leaked, and lubricating grease does not need to be replenished in the use process, the turntable bearing also does not need to be provided with an oil hole, so that maintenance-free is really realized, and the maintenance cost and time of customers are saved.
Drawings
Fig. 1 is a schematic view of a sealing structure of a conventional slewing bearing.
Fig. 2 is a schematic structural diagram of the present invention.
FIG. 3 is a schematic view of the structure of a pore Glare ring.
Fig. 4 is a schematic view of a sealing structure of the assembly process hole plug.
In the figure: 1. an outer ring; 2. an inner ring; 3. a steel ball; 4. an isolation block; 5. a taper pin; 6. assembling a fabrication hole plug; 7. an end face seal ring; 8. a seal ring; 9. a Gray circle is used for the hole; 91. an O-shaped ring; 92. wear-resisting circle.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
A four-point contact ball turntable bearing is shown in figure 2 and comprises an outer ring 1, an inner ring 2, a rolling body, an isolation block 4, an assembly process hole plug 6 and a taper pin 5, wherein the outer ring 1 is a static ring and is provided with a connecting hole; the inner ring 2 is a moving ring, and the inner ring 2 is provided with an assembly process hole which is used for installing a rolling body and an isolation block 4 in a raceway between the inner ring 2 and the outer ring 1. The rolling body is steel ball 3, and spacing block 4 is the nylon spacing block, and nylon material spacing block 4 has rust-resistant, wear-resisting, the good advantage of self-lubricating nature. After the steel ball 3 and the spacer 4 are filled, lubricating grease is filled into the raceway through the assembling process hole to lubricate the steel ball 3. Subsequently, the assembly process hole needs to be plugged with an assembly process hole plug 6 to perform a sealing function.
In order to solve the sealing problem of the bearing raceway, a sealing groove is respectively arranged at the upper side and the lower side of the raceway surface of the inner ring 2, and a hole-used GREEN ring 9 is arranged in the sealing groove. Since the hole-use gley ring 9 has a large thickness, the height dimension of the conventional turntable bearing is small. In order to enlarge the installation space of the hole-used GREEN 9 and increase the sealing area, the technical scheme is further improved, an upper boss is arranged at the upper part of the inner ring 2, a lower boss is arranged at the lower part of the outer ring 1, wherein the sealing groove at the upper side is arranged above the upper boss, the hole-used GREEN 9 in the sealing groove at the lower side is in contact sealing with the lower boss at the outer diameter surface. The upper boss and the lower boss prolong the sealing surface between the outer ring 1 and the inner ring 2, and increase the sealing area and the mounting space, so that the outer diameter surfaces of the two holes of the GREEN 9 arranged on the sealing groove of the inner ring 2 can be correspondingly contacted and sealed with the inner circular surface of the outer ring 1, and the advanced aging of the GREEN 9 for the holes due to long-term exposure is avoided.
As shown in fig. 3, the boring greige ring 9 is composed of a wear ring 92 with a rotary lip and an O-ring 91 as a biasing member, the O-ring 91 being located inside the wear ring 92. The hole-used GREEN 9 is an effective and reliable low-friction seal, can bear pressure or alternating pressure on two sides, and is widely applied to various high-pressure and medium-low pressure hydraulic systems. The wear-resistant ring 92 is made of filled Polytetrafluoroethylene (PTFE), and the O-shaped ring 91 is made of nitrile-butadiene oil-resistant rubber (NBR). The polytetrafluoroethylene has good wear resistance and certain self-lubricating property, and prevents overlarge friction force. The O-ring 91 provides a spring force that creates a seal under no or pressure while also compensating for the wear of the filled PTFE. Based on the characteristics, the GREEN ring 9 for the hole has good sealing performance on the bearing raceway and the steel ball 3 in the bearing raceway.
Another reason for water ingress into the bearing raceways is poor sealing of the assembly tooling holes. Because the assembling process hole plug 6 also bears the pressure of the steel ball 3, the assembling process hole plug 6 must be processed together with the inner ring raceway, has consistent size and cannot be misplaced or blocked. In order to facilitate disassembly and maintenance, the assembly process hole and the assembly process hole plug 6 are in clearance fit, and the clearance fit enables the assembly process hole plug 6 not to have large radial bearing capacity. The existing solution is to provide a taper pin 5 hole in the middle of the assembling process hole plug 6, and then insert the taper pin 5 in the taper pin 5 hole, so as to connect the assembling process hole plug 6 with the inner ring 2. However, this causes a problem that rainwater enters the bearing raceway from the fitting clearance between the fitting process hole and the fitting process hole plug 6.
In order to solve the problem of poor sealing performance of the assembly process hole, as shown in fig. 4, two sealing ring grooves are respectively arranged on two sides of the taper pin 5 hole of the assembly process hole plug 6, a sealing ring 8 is installed in each sealing ring groove, and the two sealing rings 8 seal a fit clearance between the assembly process hole and the assembly process hole plug 6, so that the bearing raceway is completely sealed.
Because the sealing performance of the turntable bearing is good, lubricating grease can not be leaked, and lubricating grease does not need to be replenished in the use process, the turntable bearing also does not need to be provided with an oil hole, so that maintenance-free is really realized, and the maintenance cost and time of customers are saved.
The four-point contact ball turntable bearing described in the present embodiment is also applicable to other turntable bearings with the same requirements, such as crossed cylindrical roller turntable bearings, three-row cylindrical roller combination bearings, ball-column combined turntable bearings, and the like.
The part of the utility model not detailed is prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A waterproof maintenance-free turntable bearing comprises an outer ring, an inner ring, a rolling body, an isolating block, an assembling process hole plug and a taper pin, and is characterized in that the upper side and the lower side of a rolling surface of the inner ring are respectively provided with a sealing groove, and a Gray ring for a hole is arranged in each sealing groove; and a sealing ring is arranged on the assembling process hole plug.
2. The waterproof maintenance-free slewing bearing of claim 1, wherein: the upper part of the inner ring is provided with an upper boss, the lower part of the outer ring is provided with a lower boss, and the upper boss and the lower boss are used for extending the sealing surface between the outer ring and the inner ring.
3. The waterproof maintenance-free slewing bearing of claim 1, wherein: the middle part of the assembling process hole plug is provided with a taper pin hole; the number of the sealing rings is two, and the two sealing rings are respectively arranged on two sides of the taper pin hole.
4. The waterproof maintenance-free slewing bearing of claim 1, wherein: the isolation block is made of nylon.
5. The waterproof maintenance-free slewing bearing of claim 1, wherein: grease is filled between the outer ring and the inner ring.
6. The waterproof maintenance-free slewing bearing of claim 1, wherein: the rolling bodies are steel balls or cylindrical rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022019532.3U CN213628489U (en) | 2020-09-16 | 2020-09-16 | Waterproof maintenance-free turntable bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022019532.3U CN213628489U (en) | 2020-09-16 | 2020-09-16 | Waterproof maintenance-free turntable bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213628489U true CN213628489U (en) | 2021-07-06 |
Family
ID=76649072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022019532.3U Active CN213628489U (en) | 2020-09-16 | 2020-09-16 | Waterproof maintenance-free turntable bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213628489U (en) |
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2020
- 2020-09-16 CN CN202022019532.3U patent/CN213628489U/en active Active
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