CN112431913B - Large-transmission-ratio silent transmission case and sweeper applying same - Google Patents
Large-transmission-ratio silent transmission case and sweeper applying same Download PDFInfo
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- CN112431913B CN112431913B CN202011174074.9A CN202011174074A CN112431913B CN 112431913 B CN112431913 B CN 112431913B CN 202011174074 A CN202011174074 A CN 202011174074A CN 112431913 B CN112431913 B CN 112431913B
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4063—Driving means; Transmission means therefor
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/035—Gearboxes for gearing with endless flexible members
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/1004—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02034—Gearboxes combined or connected with electric machines
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Retarders (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a high-transmission-ratio silent box transmission machine and a sweeper applied by the same, wherein the sweeper comprises a motor in driving connection with a first belt wheel, and the first belt wheel is in driving connection with a second belt wheel, wherein the second belt wheel is simultaneously used as a planet carrier of a planetary gear train, and the planet carrier is used as a power input end of the planetary gear train; the planetary gear train comprises a plurality of planetary gears which can be eccentrically and relatively arranged on the second belt wheel, and the planetary gears are respectively in transmission connection with the sun gear; the planet wheel revolves under the driving of the second belt wheel, drives the sun wheel to eccentrically rotate relative to the second belt wheel, and a sun wheel core shaft fixedly arranged with the sun wheel is used as a power output end of the transmission case; the invention has the technical effects of compact mounting structure, large transmission ratio and silent transmission, and is particularly suitable for being used as a transmission case structure of a sweeper (including a sweeping robot).
Description
Technical Field
The invention belongs to the technical field of transmission, particularly relates to a high-transmission-ratio silent transmission case, and further relates to a sweeper with the transmission case.
Background
With the continuous pursuit of people for improving living standard and the continuous innovation of cleaning technology, the sweeper (including sweeping robot) with automatic cleaning effect is more and more widely applied to the daily life of people.
The gear box is used as a driving and mounting structure of the sweeper, and the performance of the gear box can directly determine the mounting volume and the noise performance of the sweeper. However, the existing gear box generally adopts a gear meshing type gear box structure, and the noise generated by gear meshing is large in the driving working process; and when needs adopt big drive ratio, need adopt multistage gear mounting structure, the installation volume that occupies is great, and the noise problem that self exists also can further aggravate.
The applicant therefore wishes to seek technical solutions to improve on the above technical problems.
Disclosure of Invention
In view of the above, the present invention provides a silent transmission case with a large transmission ratio and a sweeper using the same, which has the technical effects of compact installation structure, realization of the large transmission ratio and silent transmission, and is therefore particularly suitable for being used as a transmission case structure of a sweeper (including a sweeping robot).
The technical scheme adopted by the invention is as follows:
a high-transmission-ratio mute transmission case comprises a motor which is in driving connection with a first belt wheel, the first belt wheel is in driving connection with a second belt wheel, wherein,
the second belt wheel is simultaneously used as a planet carrier of the planetary gear train, and the planet carrier is used as a power input end of the planetary gear train;
the planetary gear train comprises a plurality of planetary gears which can be eccentrically and relatively arranged on the second belt wheel, and the planetary gears are respectively in transmission connection with the sun gear;
the planet wheel revolves under the driving of the second belt wheel, drives the sun wheel to eccentrically rotate relative to the second belt wheel, and a sun wheel core shaft fixedly arranged with the sun wheel is used as a power output end of the transmission case.
Preferably, the first belt wheel is in transmission connection with the second belt wheel through a transmission belt; each planet wheel is in transmission connection with the sun wheel through a transmission belt.
Preferably, each planet wheel is respectively provided with a planet shaft eccentric hole for inserting a planet shaft; the planet shafts are fixedly arranged on the second belt wheel, and the planet wheels can be arranged on the corresponding planet shafts in a relatively rotating mode.
Preferably, the planetary gear train further comprises a planetary cover plate, each planetary gear is provided with a planetary cover plate eccentric hole for fixedly mounting the planetary cover plate, and the planetary cover plate is fixedly mounted and connected with each planetary cover plate eccentric hole through a fastener.
Preferably, the transmission case comprises a pulley mounting housing on which the first and second pulleys are relatively rotatably mounted, while the sun gear is eccentrically rotatably mounted with respect to the second pulley.
Preferably, the belt wheel mounting shell is provided with an eccentric base with an eccentric hole, and the lower end of the sun wheel mandrel is inserted into the eccentric hole in a relatively rotating manner; the sun wheel is fixedly arranged on the sun wheel mandrel; the second belt wheel is relatively concentrically and rotatably arranged on the periphery of the eccentric base.
Preferably, the transmission case further comprises a gear train mounting shell positioned at the periphery of the planetary gear train, and the gear train mounting shell and the belt wheel mounting shell are fixedly mounted and connected into a whole; the upper end of the sun wheel mandrel can be relatively rotatably arranged on the gear train installation shell.
Preferably, the periphery of the sun wheel core shaft is sleeved with an eccentric mounting sleeve in a relatively rotatable manner; the planetary gear train also comprises a planetary cover plate fixedly connected with each planetary gear, and the planetary cover plate can be relatively concentrically and rotatably arranged on the eccentric mounting sleeve.
Preferably, the eccentric mounting sleeve is fixedly mounted on the inner periphery of the gear train mounting shell, and the end part of the eccentric mounting sleeve is locked by a nut.
Preferably, the outer diameter of the second belt pulley is larger than that of the first belt pulley, so that the first-stage speed reduction is realized; the outer diameter of the second belt wheel is larger than that of the sun wheel, so that second-stage speed reduction is realized.
Preferably, the sweeper comprises a transmission case installed on a sweeper shell, wherein the transmission case adopts the high-transmission-ratio silent transmission case.
The invention creatively provides a belt wheel connected by transmission to realize the transmission effect of a primary belt wheel, and simultaneously takes the belt wheel positioned at a power output end as a planet carrier structure of a planetary gear train and is used for the power input end of the planetary gear train; meanwhile, the interiors of the planetary gear trains are in transmission connection, and a gear engagement type transmission structure is omitted, so that the noise of the transmission case during transmission work is greatly reduced.
The invention has the technical effects of compact mounting structure, large transmission ratio and silent transmission, is particularly suitable for being used as a transmission case structure of a sweeper (including a sweeping robot), is certainly suitable for being applied to related fields with similar transmission technical requirements, and is not particularly limited by the invention.
Drawings
Fig. 1 is a schematic structural diagram of a high-ratio silent transmission case 1 according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is an exploded view of FIG. 1;
FIG. 5 is a schematic view of the hidden gear train of FIG. 1 mounted to the housing 42;
FIG. 6 is a top view of FIG. 5;
fig. 7 is a schematic structural view of fig. 5 with the planetary cover plate 31d hidden;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is an exploded view of FIG. 7;
FIG. 10 is a schematic structural view of a belt wheel mounting housing 41 in an embodiment of the present invention;
fig. 11 is a schematic view of a mounting structure between the sun gear 33 and the planet gear 31 in the embodiment of the present invention.
Detailed Description
The embodiment of the invention discloses a high-transmission-ratio mute transmission case, which comprises a motor in driving connection with a first belt wheel, wherein the first belt wheel is in driving connection with a second belt wheel, the second belt wheel is simultaneously used as a planet carrier of a planetary gear train, and the planet carrier is used as a power input end of the planetary gear train; the planetary gear train comprises a plurality of planetary gears which can be eccentrically and relatively arranged on the second belt wheel, and the planetary gears are respectively in transmission connection with the sun gear; the planet wheel revolves under the driving of the second belt wheel, drives the sun wheel to eccentrically rotate relative to the second belt wheel, and a sun wheel core shaft fixedly arranged with the sun wheel is used as a power output end of the transmission case.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all 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, 2, 3 and 4, a high-transmission-ratio silent transmission case 1 includes a motor 10 drivingly connected to a first pulley 21, the first pulley 21 is drivingly connected to a second pulley 23 via a transmission belt 22 (in other embodiments, a transmission structure having a similar transmission effect as the transmission belt 22, such as a transmission chain, may also be adopted, and the shape of the transmission chain is not particularly limited in this embodiment), wherein the second pulley 23 serves as a carrier of a planetary gear train 30, and the carrier serves as a power input end of the planetary gear train 30; the planetary gear train 30 includes a plurality of planetary gears 31 (specifically, in the present embodiment, 3 planetary gears are used) eccentrically and rotatably mounted on the second pulley 23, and each planetary gear 31 is in transmission connection with the sun gear 33 through a transmission belt 32 (in other embodiments, a transmission structure having a similar transmission effect as the transmission belt 32, such as a transmission chain, may also be used, and the shape of the transmission structure is not particularly limited in this embodiment); the planet wheel 31 revolves under the driving of the second belt wheel 23, drives the sun wheel 33 to eccentrically rotate relative to the second belt wheel 23, and a sun wheel core shaft 34 fixedly mounted with the sun wheel 33 is used as a power output end of the transmission case 1;
preferably, referring further to fig. 5-9, to facilitate the compact installation of the overall transmission case 1 structure, in the present embodiment, the transmission case 1 includes a pulley installation housing 41, the first pulley 21 and the second pulley 23 are relatively rotatably installed on the pulley installation housing 41, and the sun gear 33 is eccentrically rotatably installed on the pulley installation housing 41 relative to the second pulley 23;
preferably, as shown in fig. 10, in order to achieve the eccentric rotation mounting function of the sun gear 33 relative to the second pulley 23, in the present embodiment, an eccentric base 41b having an eccentric hole 41a is fixed on the pulley mounting housing 41, the lower end of the sun gear core shaft 34 is relatively rotatably inserted into the eccentric hole 41a through a lower bushing 35a, and in order to reduce the wear of the sun gear core shaft 34, a lower pad 36a sleeved on the outer periphery of the sun gear core shaft 34 is disposed at the upper end of the lower bushing 35 a; the sun gear 33 is fixedly arranged on the sun gear mandrel 34; the second belt wheel 23 is relatively concentrically and rotatably arranged on the periphery of the eccentric base 41b through the lower bearing 37a, so that the compact installation structure is ensured and the installation space is saved on the basis of realizing the power output effect of the two-stage transmission ratio;
preferably, as further shown in fig. 11, in order to ensure the belt installation connection between the sun gear 33 and each of the planetary gears 31, in the present embodiment, each of the planetary gears 31 is provided with a belt installation groove 31a corresponding to the belt 32, and the outer periphery of the sun gear 33 is provided with 3 belt installation grooves 33a, 33b, 33c corresponding to the belt 32 of each of the planetary gears 31 and distributed in parallel up and down; in order to achieve convenient eccentric mounting of the planet wheels 31 on the second belt pulley 23, in the present embodiment, each planet wheel 31 is provided with a planet shaft eccentric hole 31c for inserting the planet shaft 31 b; the planet shaft 31b is fixedly arranged on the second belt wheel 23, and the planet wheel 31 is arranged on the corresponding planet shaft 31b in a relatively rotating way; further preferably, in order to achieve a stable planetary gear train transmission effect, in the present embodiment, the planetary gear train 30 further includes planetary cover plates 31d, each planetary gear 31 is respectively provided with a planetary cover plate eccentric hole 31e for fixedly mounting the planetary cover plate 31d, and the planetary cover plate 31d is fixedly mounted and connected with each planetary cover plate eccentric hole 31e through a fastener;
preferably, in order to achieve the installation protection effect on the planetary gear train 30, in the present embodiment, the transmission case 1 further includes a gear train installation housing 42 located at the periphery of the planetary gear train 30, the gear train installation housing 42 and the pulley installation housing 41 are fixedly installed and connected into a whole through a fastener (including a screw and/or a positioning pin), further preferably, in the present embodiment, the gear train installation housing 42 is overall in an oval shape, and is provided with a first notch 42a and a second notch 42b which are used for simplifying an installation space and are distributed in bilateral symmetry, which can both meet the requirement that the planetary gear train 30 rotates eccentrically inside the gear train installation housing 42, and can save the installation size;
the upper end of the sun wheel spindle 34 is relatively rotatably mounted on the gear train mounting shell 42 through an upper shaft sleeve 35b, and in order to reduce the abrasion on the sun wheel spindle 34, an upper gasket 36b sleeved on the periphery of the sun wheel spindle 34 is arranged at the lower end of the upper shaft sleeve 35 b;
preferably, in order to realize the requirement of eccentric installation of the planetary cover plate 31d, in the present embodiment, an eccentric installation sleeve 38 is sleeved on the outer periphery of the sun gear core shaft 34 in a relatively rotatable manner, and the eccentric installation sleeve 38 is positioned on the outer periphery of the upper shaft sleeve 35 b; the planetary cover plate 31d is relatively concentrically rotatably mounted on the eccentric mounting sleeve 38 through an upper bearing 37 b; the eccentric mounting sleeve 38 is fixedly mounted on the inner periphery of the gear train mounting housing 42, and the end portion of the eccentric mounting sleeve is locked by the nut 43, and particularly, in the present embodiment, a clamping structure is further provided between the eccentric mounting sleeve 38 and the inner periphery of the gear train mounting housing 42, which is beneficial to better locking and mounting effects.
The present embodiment creatively proposes that the driving effect of the primary pulley is achieved by the driving connection of the pulleys 21, 23, while the second belt pulley 23 at the power take-off is simultaneously used as the planet carrier structure of the planetary gear train 30, meanwhile, the planetary gear train 30 of the embodiment cancels the structural design of an inner gear ring, skillfully installs the planetary gear 31 and the sun gear 33 of the planetary gear train 30 in an eccentric way, in actual operation, the planet wheel 31 revolves under the driving of the second belt wheel 23, and drives the sun wheel 33 to rotate eccentrically relative to the second belt wheel 23, finally the input power of the second belt wheel 23 as a planet carrier is output through the sun wheel 33, the transmission effect of the second-stage planetary gear train is realized, therefore, the embodiment realizes a large transmission ratio effect on the basis of ensuring compact installation structure; meanwhile, the transmission belts are adopted for transmission between the inner parts of the planetary gear train 30 in the embodiment, and a gear engagement type transmission structure is omitted, so that the noise of the transmission case 1 during transmission work is greatly reduced.
The embodiment further provides a sweeper, which comprises a transmission case arranged on a shell of the sweeper, wherein the transmission case adopts the high-transmission-ratio mute transmission case 1 provided by the embodiment, and when the sweeper is specifically applied, the sun wheel mandrel 34 can be specifically connected with a roller of the sweeper in a driving and installing manner; since the transmission box of the sweeper usually requires speed reduction transmission, in the embodiment, the outer diameter of the second belt wheel 23 is larger than that of the first belt wheel 21, so that the first-stage belt wheel type transmission speed reduction is realized; the outer diameter of the second belt wheel 23 is larger than that of the sun wheel 33, so that the planetary gear train type transmission speed reduction of the second stage is realized.
The transmission case 1 provided by the embodiment has the technical effects of compact mounting structure, large transmission ratio and silent transmission, so that the transmission case is particularly suitable for being used as a transmission case structure of a sweeper (including a sweeping robot); of course, the high-transmission-ratio silent transmission case 1 proposed by the present embodiment can also be applied to the related field with similar transmission technology requirements, and the present embodiment does not particularly limit the same.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A silent transmission case with large transmission ratio is characterized by comprising a motor which is in driving connection with a first belt wheel, the first belt wheel is in driving connection with a second belt wheel, wherein,
the second belt wheel is simultaneously used as a planet carrier of the planetary gear train, and the planet carrier is used as a power input end of the planetary gear train;
the planetary gear train comprises a plurality of planetary gears which can be eccentrically and relatively arranged on the second belt wheel, and the planetary gears are respectively in transmission connection with the sun gear;
the planet wheel revolves under the driving of a second belt wheel, drives the sun wheel to eccentrically rotate relative to the second belt wheel, and a sun wheel core shaft fixedly arranged with the sun wheel is used as a power output end of the transmission case and is used as a mute transmission case with a large transmission ratio; the first belt wheel is in transmission connection with the second belt wheel through a transmission belt or a transmission chain; each planet wheel is in transmission connection with the sun wheel through a transmission belt or a transmission chain.
2. The high transmission ratio mute transmission case as claimed in claim 1, wherein each planet wheel is respectively provided with a planet shaft eccentric hole for plugging the planet shaft; the planet shafts are fixedly arranged on the second belt wheel, and the planet wheels can be relatively rotatably arranged on the corresponding planet shafts; the planetary gear train also comprises a planetary cover plate, each planetary gear is respectively provided with a planetary cover plate eccentric hole for fixedly installing the planetary cover plate, and the planetary cover plate is fixedly installed and connected with each planetary cover plate eccentric hole through a fastener.
3. A high ratio silent gearbox according to claim 1, wherein said gearbox comprises a pulley mounting housing, said first and second pulleys being relatively rotatably mounted on said pulley mounting housing, while said sun gear is eccentrically rotatably mounted on said pulley mounting housing relative to said second pulley.
4. The high transmission ratio mute transmission case according to claim 3, wherein the pulley mounting housing is provided with an eccentric base with an eccentric hole, and the lower end of the sun wheel mandrel is relatively rotatably inserted into the eccentric hole; the sun wheel is fixedly arranged on the sun wheel mandrel; the second belt wheel is relatively concentrically and rotatably arranged on the periphery of the eccentric base.
5. The high gear ratio mute transmission case according to claim 3, further comprising a gear train mounting housing located at the periphery of the planetary gear train, wherein the gear train mounting housing is fixedly mounted and connected with the pulley mounting housing as a whole; the upper end of the sun wheel mandrel can be relatively rotatably arranged on the gear train installation shell.
6. The high-transmission-ratio mute transmission case as claimed in claim 5, wherein the periphery of the sun wheel core shaft is sleeved with an eccentric mounting sleeve in a relatively rotatable manner; the planetary gear train also comprises a planetary cover plate fixedly connected with each planetary gear, and the planetary cover plate can be relatively concentrically and rotatably arranged on the eccentric mounting sleeve.
7. The high gear ratio silent gearbox of claim 6, wherein said eccentric mounting sleeve is fixedly mounted on the inner periphery of said gear train mounting housing, and its end is locked by a nut.
8. The high gear ratio silent gearbox according to claim 1, wherein the outer diameter of said second pulley is larger than the outer diameter of said first pulley, achieving a first stage of deceleration; the outer diameter of the second belt wheel is larger than that of the sun wheel, so that second-stage speed reduction is realized.
9. A sweeper comprising a gearbox mounted on the sweeper housing, wherein the gearbox incorporates a high ratio silent gearbox as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174074.9A CN112431913B (en) | 2020-10-28 | 2020-10-28 | Large-transmission-ratio silent transmission case and sweeper applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174074.9A CN112431913B (en) | 2020-10-28 | 2020-10-28 | Large-transmission-ratio silent transmission case and sweeper applying same |
Publications (2)
| Publication Number | Publication Date |
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| CN112431913A CN112431913A (en) | 2021-03-02 |
| CN112431913B true CN112431913B (en) | 2021-11-19 |
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| CN202011174074.9A Active CN112431913B (en) | 2020-10-28 | 2020-10-28 | Large-transmission-ratio silent transmission case and sweeper applying same |
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