CN113028018B - Transmission device - Google Patents
Transmission device Download PDFInfo
- Publication number
- CN113028018B CN113028018B CN202110389878.9A CN202110389878A CN113028018B CN 113028018 B CN113028018 B CN 113028018B CN 202110389878 A CN202110389878 A CN 202110389878A CN 113028018 B CN113028018 B CN 113028018B
- Authority
- CN
- China
- Prior art keywords
- way bearing
- shaft
- transmission shaft
- transmission
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- F16H29/00—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
Abstract
The invention relates to a transmission device in the technical field of power transmission, which comprises a shaft sleeve, a one-way bearing, a transmission shaft and a gear, wherein the shaft sleeve is arranged on the transmission shaft; the shaft sleeve comprises a first shaft sleeve and a second shaft sleeve, the one-way bearing comprises four one-way bearings, and the transmission shaft comprises a first transmission shaft and a second transmission shaft; the inner diameter of the first transmission shaft is larger than the outer diameter of the second transmission shaft, the second transmission shaft penetrates through the cavity of the first transmission shaft in a coaxial mode, two ends of the second transmission shaft extend out of the end part of the first transmission shaft, the first one-way bearing and the fourth one-way bearing are respectively sleeved at two ends of the second transmission shaft and are opposite in rotation direction, and the second one-way bearing and the third one-way bearing are respectively sleeved at two ends of the first transmission shaft and are opposite in rotation direction; the first one-way bearing and the second one-way bearing are reversely sleeved in the first shaft sleeve in a rotating way and rotate along with the first shaft sleeve, the third one-way bearing and the internal gear are sleeved in the second shaft sleeve and drive the second shaft sleeve to rotate, and the gear is sleeved with the fourth one-way bearing. The invention has compact structure and effectively improves the transmission efficiency.
Description
Technical Field
The invention relates to the technical field of power transmission, in particular to a transmission device, and particularly relates to a transmission device for changing reciprocating rotation into unidirectional rotation.
Background
Most of the existing devices driven by reciprocating force only utilize the one-way process of the reciprocating force, the return stroke is in an idle running state, and the transmission efficiency is not high. The existing device for changing reciprocating transmission into unidirectional transmission has more complex mechanism and high manufacturing cost; most devices adopt multi-stage gear transmission, the size of the mechanism is large, and the large number of gears causes low transmission efficiency and low reliability of the device.
The search of the prior art shows that the chinese patent publication No. CN106988869A discloses a linear/rotational conversion mechanism and an engine, wherein two coaxial first bevel gears and second bevel gears are used, and the rotation directions of the first bevel gear and the second bevel gear are opposite, when the first bevel gear drives a rotating shaft to rotate through a first unidirectional rotating portion, the second bevel gear slips on the rotating shaft through a second unidirectional rotating portion, otherwise, when the first bevel gear slips on the rotating shaft through the first unidirectional rotating portion, the second bevel gear drives the rotating shaft to rotate through the second unidirectional rotating portion. Straight-toothed gear rack pair, straight-toothed gear connect on first bevel gear to the reciprocating linear motion of rack has become first bevel gear's reciprocating linear motion, thereby reachs no matter first bevel gear clockwise or anticlockwise rotation, and the homoenergetic guarantees pivot unidirectional rotation. The patent technology has the problems related to the prior art.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to provide a transmission.
The transmission device provided by the invention comprises a shaft sleeve, a one-way bearing, a transmission shaft and a gear;
the shaft sleeve comprises a first shaft sleeve and a second shaft sleeve, the one-way bearing comprises a first one-way bearing, a second one-way bearing, a third one-way bearing and a fourth one-way bearing, the transmission shaft comprises a first transmission shaft and a second transmission shaft, and the gear comprises an outer gear, a planetary gear and an inner gear;
the first transmission shaft is a hollow cylinder, the inner diameter of the first transmission shaft is larger than the outer diameter of the second transmission shaft, the second transmission shaft penetrates through the cavity of the first transmission shaft in a coaxial mode, two ends of the second transmission shaft extend out of the end portion of the first transmission shaft, the first one-way bearing and the fourth one-way bearing are respectively sleeved at two ends of the second transmission shaft and are opposite in rotation direction, the second one-way bearing and the third one-way bearing are respectively sleeved at two ends of the first transmission shaft and are opposite in rotation direction, the first one-way bearing and the second one-way bearing are located at the same end and are opposite in rotation direction, and the third one-way bearing and the fourth one-way bearing are located at the same end and are opposite in rotation direction;
the inner surface of the outer gear is sleeved on the surface of the outer ring of the fourth one-way bearing, and the inner gear is meshed with the outer gear through a planetary gear;
the first one-way bearing and the second one-way bearing are sleeved in the first shaft sleeve and rotate along with the first shaft sleeve, and the third one-way bearing and the internal gear are sleeved in the second shaft sleeve and drive the second shaft sleeve to rotate.
In some embodiments, the outer ring diameter of the first one-way bearing is equal to or different from the outer ring diameter of the second one-way bearing.
In some embodiments, the diameter of an outer ring of the third one-way bearing is equal to or different from the diameter of an outer ring of the ring gear.
In some embodiments, the second sleeve is a split structure and includes a sleeve and an end cap, and the end cap is detachably connected to the sleeve.
In some embodiments, a flat key is arranged between the first shaft sleeve and the first one-way bearing and/or between the first shaft sleeve and the outer ring of the second one-way bearing.
In some embodiments, a flat key is arranged between the second shaft sleeve and the third one-way bearing and/or between the second shaft sleeve and the outer ring of the inner gear ring.
In some embodiments, the bearing cover is connected to two adjacent sides of the first shaft sleeve and the second shaft sleeve respectively.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention changes the reciprocating rotation of the input shaft into the unidirectional rotation of the output shaft, has simple and compact structure, reduces the volume of the transmission device and effectively improves the transmission efficiency.
2. According to the invention, by optimizing the optimized design of the structures of the components such as the shaft sleeve, the one-way bearing and the like, the transmission effect is improved, and the stability and the safety coefficient of the transmission device are ensured.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a connection structure of a first transmission shaft and a one-way bearing according to the present invention;
FIG. 3 is a schematic view of the connection structure between the second transmission shaft and the one-way bearing and the gears thereof.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The invention provides a transmission device, in particular to a transmission device for changing reciprocating rotation into unidirectional rotation, which mainly comprises a shaft sleeve 1, a unidirectional bearing 2 arranged in the shaft sleeve 1, a transmission shaft 3 in transmission connection with the unidirectional bearing 2 and a gear 4. The preferable structure combination mode is as follows:
the shaft sleeve 1 comprises a first shaft sleeve 11 and a second shaft sleeve 12, the first shaft sleeve 11 is a power input transmission piece, the second shaft sleeve 12 is a power output transmission piece, the whole structures of the first shaft sleeve and the second shaft sleeve are preferably convex cylinders, the convex end of the first shaft sleeve 11 is connected with an external power input shaft, and the convex end of the second shaft sleeve 12 is connected with an external power output shaft. The one-way bearing 2 is a bearing that can rotate freely in one direction and is locked in the other direction, and includes a first one-way bearing 21, a second one-way bearing 22, a third one-way bearing 23, and a fourth one-way bearing 24. The first one-way bearing 21 and the second one-way bearing 22 are sleeved in the first shaft sleeve 11 in a spaced and parallel manner, and the rotation directions of the first one-way bearing 21 and the second one-way bearing 22 are opposite. The inner peripheral surface of the first sleeve 11 and the outer peripheral surface of the first one-way bearing 21 and the inner peripheral surface of the first sleeve 11 and the outer peripheral surface of the second one-way bearing 22 are fitted in an interference fit manner, and more preferably, flat keys are respectively installed on the inner peripheral surface of the first sleeve 11 and the outer peripheral surface of the first one-way bearing 21 and the inner peripheral surface of the first sleeve 11 and the outer peripheral surface of the second one-way bearing 22 in a key slot manner, so that the synchronism of the first one-way bearing 21 and the second one-way bearing 22 with the first sleeve 11 is further improved through the flat keys. Preferably, both the first one-way bearing 21 and the second one-way bearing 22 are located in the rear end cylinder of the first boss 11 having a large caliber. The third one-way shaft 23 and the fourth one-way bearing 24 are sleeved in the second sleeve 12 in a spaced and parallel manner, and the rotation directions of the third one-way bearing 23 and the fourth one-way bearing 24 are opposite.
The gear 4 includes an external gear 41, a planetary gear 42 and an internal gear 43, wherein an inner peripheral surface of the external gear 41 is sleeved on an outer peripheral surface of the fourth one-way bearing 24, the external gear and the fourth one-way bearing are preferably in interference fit, and further, flat keys are respectively installed on the inner peripheral surface of the external gear 41 and the outer peripheral surface of the first one-way bearing 24 in a key slot mode, so that transmission efficiency of the external gear and the first one-way bearing is ensured. The internal gear 43 is concentrically fitted to the outside of the external gear 41 and is in meshing transmission with the planetary gears 42. The outer peripheral surfaces of the third one-way bearing 23 and the internal gear 43 are respectively connected with the inner peripheral surface of the second shaft sleeve 12 in an interference fit manner, and furthermore, flat keys are respectively arranged on the outer peripheral surface of the third one-way bearing 23 and the inner peripheral surface of the second shaft sleeve 12 as well as on the outer peripheral surface of the internal gear 43 and the inner peripheral surface of the second shaft sleeve 12 in a key slot manner, so that the second shaft sleeve 12 and the third one-way bearing 23 or the internal gear 43 can synchronously rotate.
The transmission shaft 3 includes a first transmission shaft 31 and a second transmission shaft 32, wherein the first transmission shaft 31 is a hollow shaft with two open ends, the second transmission shaft 32 can be a solid shaft or a hollow shaft, and the inner diameter of the first transmission shaft 31 is larger than the outer diameter of the second transmission shaft 32. The second transmission shaft 32 passes through the inner cavity of the first transmission shaft 31, and two ends of the second transmission shaft 32 extend to the outside of two ends of the first transmission shaft 31 respectively. The inner rings of the first one-way bearing 21 and the fourth one-way bearing 24 are respectively sleeved at two ends of the second transmission shaft 32 and are both positioned outside the first transmission shaft 31, the inner rings of the second one-way bearing 22 and the third one-way bearing 23 are respectively sleeved at two ends of the first transmission shaft 31 and have opposite rotation directions, at the moment, the first one-way bearing 21 is adjacent to the second one-way bearing 22, and the third one-way bearing 23 is adjacent to the fourth one-way bearing 24. Preferably, the contact surfaces of the first one-way bearing 21 and the fourth one-way bearing 24 with the second transmission shaft 32 can be provided with key slots to mount flat keys, and similarly, the transmission contact surfaces of the second one-way bearing 22 and the third one-way bearing 23 with the first transmission shaft 31 can also be provided with key slots to mount flat keys to improve transmission efficiency.
After the shaft sleeve 1, the one-way bearing 2, the transmission shaft 3 and the gear 4 are assembled, preferably, the distance between two opposite end faces of the first shaft sleeve 11 and the second shaft sleeve 12 is smaller, so that the transmission efficiency of the transmission device is improved, and the structure is more compact. After the transmission device is assembled, the first one-way bearing 21 and the second one-way bearing 22, the second one-way bearing 22 and the third one-way bearing 23, and the third one-way bearing 23 and the fourth one-way bearing 24 are opposite in rotation direction. The operating principle of the transmission according to the invention is explained by the setting:
setting: the outer ring of the first one-way bearing 21 is locked and rotated clockwise and counterclockwise relative to the inner ring thereof, and then the third one-way bearing 23 is the same as the first one-way bearing 21, and the outer ring thereof is locked and rotated clockwise and counterclockwise relative to the inner ring, while the second one-way bearing 22 and the fourth one-way bearing 24 are opposite, and the outer ring thereof is locked and rotated clockwise and counterclockwise relative to the inner ring.
When the external input shaft drives the first sleeve 11 to rotate clockwise, the outer ring of the first one-way bearing 21 is locked clockwise relative to the inner ring, and the outer ring of the second one-way bearing 22 rotates clockwise relative to the inner ring, so that the first one-way bearing 21 drives the second transmission shaft 32 to rotate clockwise through the inner ring. At this time, since the outer ring of the second one-way bearing 22 rotates with respect to the inner ring and the inner diameter of the first transmission shaft 31 is larger than the outer diameter of the second transmission shaft 32, the first transmission shaft 31 does not rotate and remains relatively stationary. And then the second transmission shaft 32 drives the inner ring of the fourth one-way bearing 24 to rotate clockwise, therefore, the outer ring of the fourth one-way bearing 24 is locked anticlockwise relative to the inner ring rotating clockwise along with the second transmission shaft 32, then the fourth one-way bearing 24 drives the outer gear 41 to rotate clockwise, then the planet gear 42 drives the inner gear 43 to rotate anticlockwise, then the inner gear 43 drives the second shaft sleeve 12 to rotate anticlockwise, and finally the second shaft sleeve 12 drives the output shaft to rotate anticlockwise. At this time, the third one-way bearing 23 is rotated counterclockwise by the second sleeve 12.
When the external input shaft drives the first sleeve 11 to rotate counterclockwise, the outer ring of the first one-way bearing 21 rotates counterclockwise relative to the inner ring, and the outer ring of the second one-way bearing 22 is locked counterclockwise relative to the inner ring, so that the second one-way bearing 22 drives the first transmission shaft 31 to rotate counterclockwise through the inner ring. At this time, since the outer race of the first one-way bearing 21 rotates with respect to the inner race and the inner diameter of the first transmission shaft 31 is larger than the outer diameter of the second transmission shaft 32, the second transmission shaft 32 does not rotate and remains relatively stationary. Furthermore, the first transmission shaft 31 drives the inner ring of the third one-way bearing 23 to rotate counterclockwise, so that the outer ring of the third one-way bearing 23 is locked clockwise relative to the inner ring rotating counterclockwise along with the first transmission shaft 31, and then the second sleeve 12 is driven to rotate counterclockwise by the outer ring of the third one-way bearing 23, and finally the second sleeve 12 drives the output shaft to rotate counterclockwise. At this time, the ring gear 43 rotates counterclockwise with the second sleeve 12, and then, the outer ring of the fourth one-way bearing 24 rotates clockwise with respect to the inner ring.
The invention changes the reciprocating rotation of the input shaft into the unidirectional rotation of the output shaft, has simple and compact structure, reduces the volume of the transmission device and effectively improves the transmission efficiency.
Example 2
The embodiment 2 is a further optimized embodiment based on the embodiment 1, and by optimizing the optimized design of the structures of the components such as the shaft sleeve, the one-way bearing and the like, the transmission effect is improved, and the stability and the safety factor of the transmission device are ensured. Specifically, the method comprises the following steps:
the diameters of the outer rings of the first one-way bearing 21 and the second one-way bearing 22 installed in the first sleeve 11 may be equal or different. Preferably, the diameters of the outer rings of the first one-way bearing 21 and the second one-way bearing 22 are different, and further, the diameter of the outer ring of the first one-way bearing 21 is smaller than that of the outer ring of the second one-way bearing 22, so that the assembly is facilitated, and meanwhile, the structural strength of the first shaft sleeve 11 can be improved to a certain extent by arranging the inner surface of the first shaft sleeve 11 as a coaxial step-shaped mounting seat. Similarly, the outer diameter of the third one-way bearing 23 installed in the second sleeve 12 and the outer diameter of the ring gear 43 may be the same or different. Preferably, the outer ring diameter of the third one-way bearing 23 is different from the outer diameter of the ring gear 43, and further, the outer ring diameter of the third one-way bearing 23 is smaller than the outer diameter of the ring gear 43, and the assembly efficiency can be improved by increasing the outer diameter of the ring gear 43. When the outer ring diameter of the third one-way bearing 23 is smaller than the outer diameter of the ring gear 43, it is preferable that the second sleeve 12 is a separate structure, and includes a sleeve 121 and an end cover 122, which are detachably connected together, for example, by a bolt. Through the components of a whole that can function independently structure, the installation problem under the great condition of adaptation ring gear 43 external diameter that on the one hand can be better, the output shaft of different shapes of accessible change different end covers adaptation simultaneously.
Preferably, the transmission device further comprises bearing covers 5 arranged at opposite open ends of the first shaft sleeve 11 and the second shaft sleeve 12, the two bearing covers 5 are respectively arranged at opposite and adjacent two ends of the first shaft sleeve 11 and the second shaft sleeve 12 in a screw mode, and safety factors in the operation process of the transmission device can be effectively improved.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (7)
1. A transmission device is characterized by comprising a shaft sleeve (1), a one-way bearing (2), a transmission shaft (3) and a gear (4);
the shaft sleeve (1) comprises a first shaft sleeve (11) and a second shaft sleeve (12), the one-way bearing (2) comprises a first one-way bearing (21), a second one-way bearing (22), a third one-way bearing (23) and a fourth one-way bearing (24), the transmission shaft (3) comprises a first transmission shaft (31) and a second transmission shaft (32), and the gear (4) comprises an external gear (41), a planetary gear (42) and an internal gear (43);
the first transmission shaft (31) is a hollow cylinder, the inner diameter of the first transmission shaft (31) is larger than the outer diameter of the second transmission shaft (32), the second transmission shaft (32) passes through the cavity of the first transmission shaft (31) in a coaxial mode, two ends of the second transmission shaft extend out of the end of the first transmission shaft (31), the first one-way bearing (21) and the fourth one-way bearing (24) are respectively sleeved at two ends of the second transmission shaft (32) and have opposite rotation directions, the second one-way bearing (22) and the third one-way bearing (23) are respectively sleeved at two ends of the first transmission shaft (31) and have opposite rotation directions, the first one-way bearing (21) and the second one-way bearing (22) are positioned at the same end and rotate in opposite directions, the third one-way bearing (23) and the fourth one-way bearing (24) are positioned at the same end and rotate in opposite directions;
the inner surface of the outer gear (41) is sleeved on the outer ring surface of the fourth one-way bearing (22), and the inner gear (43) is meshed with the outer gear (41) through a planetary gear (42);
the first one-way bearing (21) and the second one-way bearing (22) are sleeved in the first shaft sleeve (11) and rotate along with the first shaft sleeve, and the third one-way bearing (23) and the internal gear (43) are sleeved in the second shaft sleeve (12) and drive the second shaft sleeve (12) to rotate.
2. Transmission according to claim 1, characterized in that the outer ring diameter of said first one-way bearing (21) is equal or different from the outer ring diameter of said second one-way bearing (22).
3. Transmission according to claim 1, characterized in that the outer ring diameter of the third one-way bearing (23) is equal or different to the outer ring diameter of the inner ring gear (43).
4. A transmission arrangement as claimed in claim 1 or 3, characterised in that the second hub (12) is of split construction and comprises a sleeve (121) and an end cap (122), the end cap (122) being detachably connected to the sleeve (121).
5. Transmission according to claim 1, characterized in that a flat key is provided between the first shaft sleeve (11) and the first one-way bearing (21) and/or the first shaft sleeve (11) and the outer ring of the second one-way bearing (22).
6. Transmission according to claim 1 or 5, characterized in that a flat key is arranged between the second sleeve (12) and the third one-way bearing (23) and/or between the second sleeve (12) and the outer ring of the inner ring gear (43).
7. A transmission according to claim 1, further comprising bearing caps (5), said bearing caps (5) being connected to adjacent sides of said first (11) and second (12) bushings, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110389878.9A CN113028018B (en) | 2021-04-12 | 2021-04-12 | Transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110389878.9A CN113028018B (en) | 2021-04-12 | 2021-04-12 | Transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113028018A CN113028018A (en) | 2021-06-25 |
| CN113028018B true CN113028018B (en) | 2022-05-06 |
Family
ID=76456351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110389878.9A Active CN113028018B (en) | 2021-04-12 | 2021-04-12 | Transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113028018B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233816A (en) * | 2021-11-12 | 2022-03-25 | 北京航空航天大学 | Mechanical motion rectifier based on planetary gear train |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2906212Y (en) * | 2006-05-19 | 2007-05-30 | 杜建国 | Improved one-way driving mechanism for use in secondary paper-feeding system of stenograph |
| JP2010025310A (en) * | 2008-07-24 | 2010-02-04 | Honda Motor Co Ltd | Transmission |
| CN111255870A (en) * | 2020-03-17 | 2020-06-09 | 广西洪钢新能源科技有限公司 | Torque conversion device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9243699B2 (en) * | 2012-12-06 | 2016-01-26 | Tai-Her Yang | Bi-directional input, one-way output wheel system |
-
2021
- 2021-04-12 CN CN202110389878.9A patent/CN113028018B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2906212Y (en) * | 2006-05-19 | 2007-05-30 | 杜建国 | Improved one-way driving mechanism for use in secondary paper-feeding system of stenograph |
| JP2010025310A (en) * | 2008-07-24 | 2010-02-04 | Honda Motor Co Ltd | Transmission |
| CN111255870A (en) * | 2020-03-17 | 2020-06-09 | 广西洪钢新能源科技有限公司 | Torque conversion device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113028018A (en) | 2021-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1888472A (en) | Internal gear ring outputting planetary speed reducer | |
| CN113028018B (en) | Transmission device | |
| CN103527721A (en) | Cycloidal pin wheel speed reducer | |
| CN200985985Y (en) | Multiple angle cranks, low vibrating and few teeth difference speed reducer | |
| KR100505017B1 (en) | Reduction gear with high reduction ratio | |
| CN109130837A (en) | A kind of electronic wheel apparatus of low-speed big and automobile | |
| CN111779812B (en) | Mechanical speed reducer capable of outputting reciprocating swing | |
| CN210327267U (en) | Speed reducer with built-in motor | |
| CN113757342A (en) | Second harmonic speed reduction device | |
| CN203962876U (en) | The two-way output large speed ratio cycloidal reducer of a kind of coaxial single input | |
| CN208337332U (en) | A kind of Two axle drive harmonic wave reducing motor | |
| CN110657222A (en) | Planetary gear transmission structure with small tooth difference | |
| CN100472091C (en) | Crank pingear transmission | |
| CN219954153U (en) | Reversing mechanism | |
| EP2032874B1 (en) | Materials for device transforming rectilinear reciprocating motion in rotary motion | |
| CN219510110U (en) | High-load small-tooth-difference speed reducer | |
| CN209762147U (en) | compact gear transmission mechanism | |
| CN203823019U (en) | Double-staged high efficient variable gear for automobile | |
| WO2021212708A1 (en) | Concentric shaft balancing device for three-cylinder engine | |
| CN212717022U (en) | Gear efficiency-increasing power output device | |
| CN2287233Y (en) | Differential combination jig transmission with less tooth difference | |
| CN220822814U (en) | Electric cylinder | |
| CN219045548U (en) | High-reduction-ratio two-stage cycloidal pin gear speed reducer | |
| CN218761166U (en) | Planetary gear speed reducing motor | |
| CN210566096U (en) | Double-shaft balance mechanism of single-cylinder diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |