CN216382425U - High transmission efficiency RV reduction gear based on rolling element kingpin - Google Patents
High transmission efficiency RV reduction gear based on rolling element kingpin Download PDFInfo
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- CN216382425U CN216382425U CN202122565136.5U CN202122565136U CN216382425U CN 216382425 U CN216382425 U CN 216382425U CN 202122565136 U CN202122565136 U CN 202122565136U CN 216382425 U CN216382425 U CN 216382425U
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Abstract
The utility model discloses a high transmission efficiency RV reducer based on rolling element roller pins, which mainly comprises: the RV reducer is meshed with a motor gear of a servo motor through the sun gear, the eccentric shaft is installed inside the flange through a bearing, a groove structure is arranged in the needle gear shell, the rolling body needle roller is embedded in the groove, the flange serves as a planet carrier to carry out structural support and power output, and the cycloidal gear is sleeved outside the eccentric part of the eccentric shaft; further comprising: the rolling body kingpin is composed of: the steel ball needle roller bearing comprises a needle roller retainer, a steel ball and a needle roller base shaft, wherein a mounting hole is formed in the outer side of the needle roller retainer in a penetrating mode. This high transmission efficiency RV reduction gear based on rolling element kingpin, its rolling element kingpin structure becomes sliding friction for rolling friction, and the oil duct hole design of kingpin can realize the multiple spot lubrication simultaneously, greatly increased transmission efficiency.
Description
Technical Field
The utility model relates to the technical field of RV reducers, in particular to a high-transmission-efficiency RV reducer based on rolling body roller pins.
Background
The RV reducer mainly comprises a cycloidal pin wheel speed reducing mechanism and a planetary speed reducing mechanism, has the advantages of strong impact resistance, large torque, high positioning precision, small vibration, large speed reducing ratio and the like, is widely applied to industrial robots, machine tools and medical detection equipment, and has the following problems when the existing RV reducer is used:
the differential gear speed reducing mechanism of the cycloid pin wheel is an important component of the RV reducer, wherein the meshing between the cycloid wheel and the roller pin is sliding friction, corresponding abrasion can be generated in the meshing process, the precision, the transmission efficiency and the service life of the RV reducer are easily influenced, and meanwhile, the roller pin is in contact with a pin gear shell groove when in use, is inconvenient to perform multipoint lubrication and is also an important factor influencing the service life.
Aiming at the problems, innovative design is urgently needed on the basis of the original RV reducer.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-transmission-efficiency RV reducer based on rolling body roller pins, and aims to solve the problems that the conventional RV reducer in the background art is inconvenient to reduce friction force and perform multipoint lubrication.
In order to achieve the purpose, the utility model provides the following technical scheme: a high transmission efficiency RV reducer based on rolling body roller pins;
the RV reducer mainly comprises: the RV reducer is meshed with a motor gear of a servo motor through the sun gear, the planetary gear is arranged on the right side of the RV reducer, the planetary gear is connected with the eccentric shaft of the RV reducer through a spline, the eccentric shaft is mounted inside the flange through a bearing, a groove structure is formed in the needle gear shell, the rolling body roller is embedded in the groove, the flange serves as a planet carrier to carry out structural support and power output, a cycloidal gear is sleeved outside the eccentric part of the eccentric shaft, and the cycloidal gear and the rolling body roller do tooth difference meshing swing;
the rolling body needle roller consists of: the roller pin retainer comprises a roller pin retainer, a steel ball and a roller pin base shaft, wherein a mounting hole is formed in the outer side of the roller pin retainer in a penetrating mode, and the steel ball is placed in the mounting hole in an embedded mode.
Preferably, the steel balls rotate in the mounting holes in an embedded mode, the mounting holes are vertically distributed on the needle roller retainer at equal intervals, the steel balls rotate in the mounting holes, sliding friction is changed into rolling friction, and friction force is reduced.
Preferably, the needle roller base shaft and the needle roller retainer share the central axis, the needle roller base shaft is attached to the steel ball, and the needle roller base shaft stably supports the steel ball, so that the overall use strength is increased.
Preferably, an oil passage hole is formed in the needle roller base shaft, penetrates through the needle roller base shaft and can penetrate through grease to lubricate the contact surface of the needle roller base shaft and the cycloid wheel.
Preferably, the cross section of the oil passage hole is in an arc-shaped structure design with a downward inclination, the output end of the oil passage hole is positioned above the steel ball, and lubricating oil in the oil passage hole flows onto the steel ball through the oil conveying channel under the influence of gravity, so that lubrication is increased, and friction is further reduced.
Compared with the prior art, the utility model has the beneficial effects that: the high transmission efficiency RV reducer based on the rolling body roller pins;
1. the steel balls arranged on the needle roller retainer are vertically distributed at equal intervals, so that when the cycloid wheel is in contact with the rolling needle rollers of the rolling body, the steel balls are in contact with the cycloid wheel, sliding friction is changed into rolling friction, the contact surface is reduced, abrasion is reduced, and the service life is prolonged;
2. the roller pin base shaft arranged in the roller pin retainer is coaxially arranged with the roller pin retainer, so that the steel ball can be stably supported from the inside and can be kept to be stably used;
3. through the oil passage hole arranged in the needle roller retainer, lubricating oil in the oil passage hole can flow to the steel ball through the oil delivery channel inclined downwards in an arc shape, so that the lubrication of the steel ball is increased, and the friction force is further reduced.
Drawings
FIG. 1 is a schematic side sectional view of an RV reducer of the present invention;
FIG. 2 is a schematic structural diagram of a rolling body roller pin in a forward cross section;
FIG. 3 is a schematic diagram of a rolling body needle roller in a top view;
fig. 4 is a schematic structural diagram of a rolling body needle roller in front of the rolling body needle roller.
In the figure: 1. an RV reducer; 2. a sun gear; 3. a planetary gear; 4. an eccentric shaft; 5. a pin gear housing; 6. Rolling body needle rollers; 61. a needle roller retainer; 62. mounting holes; 63. a steel ball; 64. a needle roller base shaft; 641. an oil passage hole; 7. a cycloid wheel; 8. and (4) a flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a high transmission efficiency RV reducer based on rolling element needle rollers comprises an RV reducer 1, a sun gear 2, a planetary gear 3, an eccentric shaft 4, a needle gear shell 5, rolling element needle rollers 6, a needle roller retainer 61, a mounting hole 62, a steel ball 63, a needle roller base shaft 64, an oil channel hole 641, a cycloidal gear 7 and a flange 8;
the RV reducer 1 mainly includes: the driving mechanism comprises a sun gear 2, a planetary gear 3, an eccentric shaft 4, a cycloidal gear 7, a flange 8, a rolling body needle roller 6 and a needle gear shell 5, wherein an RV reducer 1 is meshed with a motor gear of a servo motor through the sun gear 2, the planetary gear 3 is arranged on the right side of the RV reducer 1, the planetary gear 3 is connected with the eccentric shaft 4 of the RV reducer 1 through a spline, the eccentric shaft 4 is installed inside the flange 8 through a bearing, a groove structure is formed in the needle gear shell 5, the rolling body needle roller 6 is installed in the groove in an embedded mode, the flange 8 serves as a planet carrier to carry out structural support and power output, the cycloidal gear 7 is sleeved outside the eccentric part of the eccentric shaft 4, and the cycloidal gear 7 and the rolling body needle roller 6 are meshed and swing in a tooth difference mode;
the rolling element needle roller 6 is composed of: the needle roller retainer comprises a needle roller retainer 61, a steel ball 63 and a needle roller base shaft 64, wherein a mounting hole 62 is formed in the outer side of the needle roller retainer 61 in a penetrating mode, and the steel ball 63 is placed in the mounting hole 62 in an embedded mode.
The steel balls 63 are embedded in the mounting holes 62 to rotate, the mounting holes 62 are vertically distributed on the needle roller retainer 61 at equal intervals, the needle roller base shafts 64 and the needle roller retainer 61 share the same central axis, and the needle roller base shafts 64 are attached to the steel balls 63;
as shown in fig. 1-4, the cycloidal gear 7 is in contact with a steel ball 63 outside a rolling body needle roller 6 during rotation, the steel ball 63 rotates in a mounting hole 62 and is stably supported by a needle roller base shaft 64, sliding friction is rolling friction, contact surfaces are reduced, abrasion is further reduced, and the service life is prolonged;
an oil channel hole 641 is formed in the needle roller base shaft 64, the oil channel hole 641 penetrates through the needle roller base shaft 64, the section of the oil channel hole 641 is designed to be of an arc structure inclining downwards, and the output end of the oil channel hole 641 is located above the steel ball 63;
as shown in fig. 1-2, grease inside the RV reducer 1 flows to the steel ball 63 through the oil passage hole 641 on the needle base shaft 64, thereby lubricating the steel ball 63 and further reducing wear.
The working principle is as follows: when the high-transmission-efficiency RV reducer based on the rolling-element needle rollers is used, as shown in FIGS. 1-4, firstly, the torque of a motor is input by a sun gear 2 of a planetary speed reducing mechanism of the RV reducer 1, the sun gear 2 is meshed with a planetary gear 3, the planetary gear 3 drives an eccentric shaft 4 to rotate, the eccentric shaft 4 drives a cycloidal gear 7 to rotate, the cycloidal gear 7 is contacted with the rolling-element needle rollers 6 in a needle gear shell 5, steel balls 63 on the rolling-element needle rollers 6 are contacted and rotate in a mounting hole 62, and the contact surface is reduced through rolling friction, so that the abrasion is reduced;
subsequently, the grease inside the RV reducer 1 flows to the steel ball 63 through the oil passage hole 641 of the needle base shaft 64, thereby lubricating the steel ball 63 and further reducing wear.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (5)
1. A high transmission efficiency RV reducer based on rolling element kingpins mainly comprises: the RV reducer is meshed with a motor gear of a servo motor through the sun gear, the planetary gear is arranged on the right side of the RV reducer, the planetary gear is connected with the eccentric shaft of the RV reducer through a spline, the eccentric shaft is mounted inside the flange through a bearing, a groove structure is formed in the needle gear shell, the rolling body roller is embedded in the groove, the flange serves as a planet carrier to carry out structural support and power output, a cycloidal gear is sleeved outside the eccentric part of the eccentric shaft, and the cycloidal gear and the rolling body roller do tooth difference meshing swing;
the method is characterized in that:
the rolling body needle roller consists of: the roller pin retainer comprises a roller pin retainer, a steel ball and a roller pin base shaft, wherein a mounting hole is formed in the outer side of the roller pin retainer in a penetrating mode, and the steel ball is placed in the mounting hole in an embedded mode.
2. The rolling-body needle-roller-based high-transmission-efficiency RV reducer as claimed in claim 1, characterized in that: the steel balls are embedded in the mounting holes to rotate, and the mounting holes are vertically distributed on the needle roller retainer at equal intervals.
3. The rolling-body needle-roller-based high-transmission-efficiency RV reducer as claimed in claim 1, characterized in that: the roller pin base shaft and the roller pin retainer share the same central axis, and the roller pin base shaft is attached to the steel ball.
4. The rolling-body needle-roller-based high-transmission-efficiency RV reducer as claimed in claim 1, characterized in that: an oil passage hole is formed in the needle roller base shaft and penetrates through the needle roller base shaft.
5. The rolling-element needle-roller-based high-transmission-efficiency RV reducer as claimed in claim 4, characterized in that: the cross section of the oil passage hole is in an arc-shaped structure design with downward inclination, and the output end of the oil passage hole is positioned above the steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122565136.5U CN216382425U (en) | 2021-10-25 | 2021-10-25 | High transmission efficiency RV reduction gear based on rolling element kingpin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122565136.5U CN216382425U (en) | 2021-10-25 | 2021-10-25 | High transmission efficiency RV reduction gear based on rolling element kingpin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216382425U true CN216382425U (en) | 2022-04-26 |
Family
ID=81247539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122565136.5U Active CN216382425U (en) | 2021-10-25 | 2021-10-25 | High transmission efficiency RV reduction gear based on rolling element kingpin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216382425U (en) |
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2021
- 2021-10-25 CN CN202122565136.5U patent/CN216382425U/en active Active
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