CN211901465U - Light high-strength RV speed reducer - Google Patents
Light high-strength RV speed reducer Download PDFInfo
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- CN211901465U CN211901465U CN201921621143.9U CN201921621143U CN211901465U CN 211901465 U CN211901465 U CN 211901465U CN 201921621143 U CN201921621143 U CN 201921621143U CN 211901465 U CN211901465 U CN 211901465U
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- input disc
- gear
- eccentric shaft
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Abstract
The utility model discloses a light weight, high strength RV reduction gear, it includes: a pin gear housing; an input disc disposed within the pin gear housing; the output disc is arranged in the pin gear shell and is detachably connected with the input disc through a screw and a pin; the first cycloidal gear and the second cycloidal gear are sequentially arranged between the input disc and the output disc in parallel and are concentric with the input disc and the output disc; a first angular contact bearing disposed between the input disc and the pin gear housing; a second angular contact bearing disposed between the output disc and the pin housing; the pin gear pin is arranged between the input disc and the pin gear shell; the eccentric shaft assembly sequentially penetrates through the output disc and the input disc, and elastic retainer rings are respectively arranged between the eccentric shaft assembly and the output disc as well as between the eccentric shaft assembly and the input disc. The utility model discloses stability, leakproofness and intensity have been improved greatly.
Description
Technical Field
The utility model relates to a reduction gear, concretely relates to light weight, high strength RV reduction gear.
Background
The RV reducer is composed of a cycloidal pin wheel and a planet support, and is widely applied to the fields of industrial robots and the like due to the advantages of small size, strong impact resistance, large torque, high positioning precision, small vibration, large reduction ratio and the like.
The existing RV reducer is low in strength, poor in stability and poor in sealing performance.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem to a light weight, high strength RV reduction gear is provided.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a lightweight, high-strength RV reducer, comprising:
a pin gear housing;
an input disc disposed within the pin gear housing;
the output disc is arranged in the pin gear shell and is detachably connected with the input disc through a screw and a pin;
the first cycloidal gear and the second cycloidal gear are sequentially arranged between the input disc and the output disc in parallel and are concentric with the input disc and the output disc;
a first angular contact bearing disposed between the input disc and the pin gear housing;
a second angular contact bearing disposed between the output disc and the pin housing;
the pin gear pin is arranged between the input disc and the pin gear shell;
the eccentric shaft assembly sequentially penetrates through the output disc and the input disc, and elastic retainer rings are respectively arranged between the eccentric shaft assembly and the output disc as well as between the eccentric shaft assembly and the input disc.
In a preferred embodiment of the present invention, the pin gear housing, the input disc, the output disc, the first cycloid gear and the second cycloid gear are all made of TC4 titanium alloy.
In a preferred embodiment of the present invention, the screw is a socket head cap screw.
In a preferred embodiment of the present invention, the pin is an internally threaded taper pin.
The utility model has the advantages that:
the utility model discloses stability, leakproofness and intensity have been improved greatly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of an eccentric shaft assembly.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1 and 2, the present invention provides a light weight, high strength RV reducer, which includes a pin gear case 100, an input disc 210, an output disc 220, a first cycloidal gear 310, a second cycloidal gear 320, a first angular contact bearing 410, a second angular contact bearing 420, a pin gear 500, and an eccentric shaft assembly 600.
The pin housing 100, which is an outer casing, mounts the input disc 210, the output disc 220, the first cycloidal gear 310, and the second cycloidal gear 320.
The input disc 210, which is disposed inside the pin housing 100, is provided with a first angular contact bearing 410 between it and the pin housing 100.
And an output disc 220 disposed inside the pin housing 100 with a second angular contact bearing 420 disposed therebetween and the pin housing 100.
The input disc 210 and the output disc 220 are detachably connected through screws 230 and pins 240, respectively, unlike the conventional connection only through screws or pins, which facilitates the detachment and improves the stability of the transfer.
In addition, the screw holes and the pin holes on the input tray 210 and the output tray 220 are distributed in a triangular shape, for example, the number of the pin holes is one, the pin holes are positioned at the top, the number of the screw holes is 2, and the pin holes are positioned at the bottom, so that the assembly stability can be further improved.
The first and second cycloidal gears 310 and 320 are sequentially disposed in parallel between the input disc 210 and the output disc 220 and concentric with the input disc 210 and the output disc 220, which facilitates simultaneous insertion of external input shafts.
A pin 500 provided between the input dial 210 and the pin housing 100 for improving stability between the input dial 210 and the pin housing 100.
The eccentric shaft assemblies 600, which are provided in a plurality of groups, may be determined according to the number of mounting holes on the input disc 210 and the output disc 220, and may sequentially pass through the input disc 210 and the output disc 220.
The eccentric shaft assembly 600 includes an eccentric shaft 610, a first tapered roller bearing 620, a second tapered roller bearing 630, a cage 640, a first spacer 650, and a second spacer 660.
The first tapered roller bearing 620 is disposed at one end of the eccentric shaft, the second tapered roller bearing 630 is disposed at the other end of the eccentric shaft, and the first tapered roller bearing 620 and the second tapered roller bearing 630 may be used to be in a fitting connection with an input disc or an output disc of the speed reducer.
The cage 640 is provided on the eccentric shaft 610 between the first tapered roller bearing 620 and the second tapered roller bearing 630.
The outer surface of the holder 640 is provided with a plurality of roller pins 641, the roller pins 641 have a rectangular cross section and a diameter of 10 mm, and the roller pins 641 can rotate on the holder 640 to reduce the friction between the holder 640 and the contact member.
The first spacer 650 is fixed to one end of the eccentric shaft 610, located between the first tapered roller bearing 620 and the cage 640, and is in contact with the first tapered roller bearing 620 and the cage 640, respectively.
The second spacer 660 is fixed to the other end of the eccentric shaft 610, located between the second tapered roller bearing 630 and the holder 640, and is in contact with the second tapered roller bearing 630 and the holder 640, respectively.
The first shim 650 and the second shim 660 are used to position the first tapered roller bearing 620, the second tapered roller bearing 630, and the holder 640, respectively, to prevent the first tapered roller bearing 620, the second tapered roller bearing 630, and the holder 640 from wobbling on the eccentric shaft 610, thereby improving stability.
The first spacer 650 and the second spacer 660 may be integrally formed with the eccentric shaft 610 by a forging process, which may improve assembly efficiency and further improve assembly stability.
The first gasket 650 includes a first contact surface 651 and a second contact surface 652, both the first contact surface 651 and the second contact surface 652 are annular, and the first contact surface 651 is concentric with the second contact surface 652 and has the same inner ring diameter, while the outer ring diameter of the first contact surface 651 is smaller than the second contact surface 652.
The first contact surface 651 is in contact with the first tapered roller bearing 620 for positioning the first tapered roller bearing 620.
Further, a rubber ring having the same diameter as the first contact surface 651 may be provided on the outer surface of the first contact surface 651, so that the rubber ring can improve the frictional force between the first contact surface 651 and the first tapered roller bearing 620 and protect the first tapered roller bearing 620.
Furthermore, the outer ring diameter of the first contact surface 651 is smaller than the diameter of the first tapered roller bearing 620, so that a buffer gap 653 is formed between the first contact surface 651 and the first tapered roller bearing 620, thereby further protecting the first tapered roller bearing 620.
The outer ring diameter of the second contact surface 652 is larger than the height of the step on the eccentric shaft 610, so that the portion of the second contact surface 652 higher than the step can contact with one end of the holder 640 to position the holder 640.
In addition, a rubber ring having the same diameter as the second contact surface 652 is also provided on the outer surface of the second contact surface 652, so that the holder 640 can be protected while increasing the frictional force between the first contact surface 651 and the step and the holder 640, respectively, by the rubber ring.
The second shim 660 is symmetrical to the first shim 650, the second shim 660 includes a third contact surface 661 and a fourth contact surface 662, the second shim 660 includes third contact surfaces 661 all having a circular ring shape, and the second shim 660 includes third contact surfaces 661 concentric with the same inner ring diameter and the outer ring diameter of the third contact surfaces 42 smaller than the fourth contact surfaces 662.
The third contact surface 661 is in contact with the second tapered roller bearing 630 for positioning the second tapered roller bearing 630.
Further, a rubber ring having the same diameter as the third contact surface 661 may be provided on the outer surface of the third contact surface 661, so that the second tapered roller bearing 630 can be protected while increasing the frictional force between the third contact surface 661 and the second tapered roller bearing 630 by the rubber ring.
Further, the outer ring diameter of the third contact surface 661 is smaller than the diameter of the second tapered roller bearing 630, so that a buffer gap 663 is formed between the third contact surface 661 and the second tapered roller bearing 630, thereby further protecting the second tapered roller bearing 630.
The outer ring diameter of the fourth contact surface 662 is larger than the height of the step on the eccentric shaft 610, so that the stepped portion of the fourth contact surface 662 can contact the other end of the holder 640 to position the holder 640.
A rubber ring having the same diameter as the fourth contact surface 662 is also provided on the outer surface of the fourth contact surface 662, so that the holder 640 can be protected while increasing the frictional force between the fourth contact surface 662 and the step and the holder 640, respectively.
An oil seal assembly 110 is also provided within the pin housing 100 to further enhance the overall seal of the present application.
Like this, through the setting of above-mentioned structure, leakproofness and stability have been improved greatly to this application.
In addition, the pin housing 100, the input disc 210, the output disc 220, the first cycloidal gear 310 and the second cycloidal gear 320 are all made of TC4 titanium alloy, which can greatly improve the corrosion resistance and strength of the present application.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A light high-strength RV reducer, characterized in that, the light high-strength RV reducer includes:
the pin gear shell is internally provided with an oil seal assembly;
an input disc disposed within the pin gear housing;
the output disc is arranged in the pin gear shell and is detachably connected with the input disc through a screw and a pin;
the first cycloidal gear and the second cycloidal gear are sequentially arranged between the input disc and the output disc in parallel and are concentric with the input disc and the output disc;
a first angular contact bearing disposed between the input disc and the pin gear housing;
a second angular contact bearing disposed between the output disc and the pin housing;
the pin gear pin is arranged between the input disc and the pin gear shell;
the eccentric shaft assembly sequentially penetrates through the output disc and the input disc, elastic check rings are respectively arranged between the eccentric shaft assembly and the output disc as well as between the eccentric shaft assembly and the input disc, and the eccentric shaft assembly comprises an eccentric shaft, a first tapered roller bearing, a second tapered roller bearing, a retainer, a first gasket and a second gasket;
the retainer is arranged on the eccentric shaft and is positioned between the first conical roller bearing and the second conical roller bearing, a plurality of rolling needles are arranged on the outer surface of the retainer, the sections of the rolling needles are rectangular, the diameters of the rolling needles are 10 mm, and the rolling needles can rotate on the retainer.
2. The lightweight, high strength RV reducer of claim 1 wherein said pin housing, input disc, output disc, first cycloidal gear and second cycloidal gear are all made of TC4 titanium alloy.
3. The lightweight, high strength RV reducer of claim 1 wherein said screws are socket head cap screws.
4. The light weight, high strength RV reducer of claim 1 wherein said pin is an internally threaded conical pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921621143.9U CN211901465U (en) | 2019-09-27 | 2019-09-27 | Light high-strength RV speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921621143.9U CN211901465U (en) | 2019-09-27 | 2019-09-27 | Light high-strength RV speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211901465U true CN211901465U (en) | 2020-11-10 |
Family
ID=73282321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921621143.9U Active CN211901465U (en) | 2019-09-27 | 2019-09-27 | Light high-strength RV speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211901465U (en) |
-
2019
- 2019-09-27 CN CN201921621143.9U patent/CN211901465U/en active Active
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