CN103939537A - Gear driven infinitely variable transmission - Google Patents
Gear driven infinitely variable transmission Download PDFInfo
- Publication number
- CN103939537A CN103939537A CN201410196428.8A CN201410196428A CN103939537A CN 103939537 A CN103939537 A CN 103939537A CN 201410196428 A CN201410196428 A CN 201410196428A CN 103939537 A CN103939537 A CN 103939537A
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- CN
- China
- Prior art keywords
- gear
- transmission
- axles
- power input
- retainer
- 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.)
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Classifications
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/42—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion with gears having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable
- F16H3/423—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion with gears having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable the teeth being arranged on a surface of generally conical shape
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/76—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with an orbital gear having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
The invention relates to a gear driven infinitely variable transmission and belongs to one infinitely variable transmission. The infinitely variable transmission is structurally characterized by comprising a power input device, a transmission device connected with the power input device and an oil pressure regulation and control device connected with the power input device through a universal connecting-shaft device. The transmission device is a gear transmission mechanism. Due to the fact that gear transmission is adopted, the problems including low friction transmission efficiency and long service life are avoided, uninterrupted power transmission and stable speed change are also ensured, large transmission ratio can be achieved, a clutch and a hydrodynamic driver are not needed, a structure is reasonable, the cost is reduced, power inputting is direct, stable starting and stopping in a gear-engaging mode can be achieved, and the gear driven infinitely variable transmission can be matched with a powerful engine.
Description
Technical field
The present invention relates to a kind of stepless speed variator, particularly a kind of gear run stepless speed changer.
Background technique
Existing stepless speed variator is limited by its structure and working principle, mainly with stiction transmission, easily occurs skidding when load is larger, affects the transmission efficiency of speed changer.Slide and life-span that friction can produce a large amount of heat and effect of attrition speed changer simultaneously.Strengthen the mode of impacting force if adopt to strengthen stiction, the resistance can simultaneously strengthen parts running time.Loss power, affects the utilization ratio of power.Speed changer self uses fluid heat radiation and lubricated, and lubricated and friction is conflict relation, although there is special fluid, can not tackle the problem at its root.
Although pulse-type continuously variable transmission does not use stiction transmission, its power is the output of wave band formula, and power output is discontinuous.Because power output is discontinuous, thus can only be used for some to the undemanding field of power requirement, as packaging and weaving.And for the field of power being had relatively high expectations as automobile etc., discontinuous power output, directly affects utilization ratio and the performance of power, shall not be applied to so plant speed changer the field that power is had relatively high expectations.
Summary of the invention
The object of the invention is to solve being prone to and skidding of prior art existence in the time that load is larger, affect the transmission efficiency of speed changer, and produce amount of heat and the problem in effect of attrition speed changer life-span because sliding and rubbing, overcome the power output that pulse-type continuously variable transmission brings discontinuous, the problem that using scope is narrow simultaneously.A kind of reasonable in design is provided, and power transmission efficiency is high, long service life, and gear ratio value is large, and speed change is steadily and without the gear transmission buncher of coupling clutch.
The present invention is achieved through the following technical solutions: this gear run stepless speed changer, its special way is to comprise power input device, the output terminal of power input device is connected with transmission device, the output terminal of transmission device is connected with oil pressure regulating controller, transmission device comprises the gear frame 4 being arranged in housing 5, on gear frame 4, offer slideway 14, in slideway 14, by slide block 15, retainer 3 is installed, retainer 3 can move in slideway 14, in retainer 3, by floating bearing 6, gear drive is installed;
Described gear drive is horizontal, comprise by floating bearing 6 and be arranged on an axle 19 and two axles 20 in retainer 3, on one axle 19 and two axles 20, be separately installed with intermeshing driving gear 2 and driven gear 1, a described axle 19 is connected with power input device by universal joint, and described two axles 20 are connected with oil pressure regulating controller by universal coupling device;
This structure has been utilized the gear frame of two gears and similar lever principle, and the universal joint shaft device being connected with gear, and universal joint shaft device serves as the input and output device of power.Compare with traditional manual transmission and the automatic transmission of Planetary Gear Transmission, remove i.e. many group clutches and the break of controller complicated in multiple sets of teeth wheel and synchronizer and automatic transmission from, make structure simpler, and the structure of horizontal, the transmission direction of power does not change, and the transmission loss of power is lower.
Described driving gear 2 and driven gear 1 are spur gear or helical gear simultaneously;
Described universal coupling device comprises the universal joint being connected with two axles 20, pto＝power take-off 10 respectively, is provided with four axles 22 between two universal joints;
Described gear drive is rectilinear, comprise from top to bottom by floating bearing 6 and be arranged on three axles 21 in retainer 3, on three axles 21, driven gear 1 is installed, that engages with driven gear 1 is arranged on the umbrella planetary pinion 17 on gear shaft 18, engage with the driving gear 2 being arranged on sliding key shaft 7 below of described umbrella planetary pinion 17, and described three axle 21 tops are connected with oil pressure regulating controller;
Described driving gear 2, driven gear 1 are bevel gear;
Described driven gear 1, gear shaft 18, driving gear 2 are all arranged in retainer 3;
Described power input device comprises power input shaft 8, and power input shaft 8 is connected with sliding key shaft 7 by universal joint 9, and sliding key shaft 7 is connected with gear drive by universal joint or is directly connected with gear transmission structure;
Described regulating controller comprises the pto＝power take-off 10 being connected with driven gear 1 by axle, pto＝power take-off 10 is arranged in hydraulic jack 11, be connected with the gearshift driver plate 16 that is arranged on hydraulic jack 11 tops by bearing, pto＝power take-off 10 is constant with the upper-lower position of gearshift driver plate 16, and gearshift driver plate 16 is fixedly connected with the hydraulic piston 12 being arranged in hydraulic jack 11;
The upper-lower position of described pto＝power take-off 10 and gearshift driver plate 16 is constant refers to that pto＝power take-off 10 can rotation in gearshift driver plate 16, but it remains unchanged with the upper-lower position of gearshift driver plate 16, and moving up and down by gearshift driver plate 16 of pto＝power take-off 10 drives;
In order to keep the sealing of hydraulic jack 11, between hydraulic jack 11 and hydraulic piston 12, be provided with seal ring 13.
Because the present invention is owing to having adopted gear transmission, both avoided the problem that friction driving efficiency is low, the life-span is short, ensure that again power transmission free of discontinuities, speed change are steady, can realize larger velocity ratio, without clutch and hydraudynamic drive, more reasonable structure, reduce cost, power input is more direct, and can realize gentle start and the parking of band shelves, can mate more powerful motor.
Brief description of the drawings
Fig. 1: embodiment 1 structural representation;
Fig. 2: embodiment 1 schematic diagram;
Fig. 3: the structural representation of universal coupling device in embodiment 1;
Fig. 4: embodiment 2 structural representation;
Fig. 5: embodiment 2 schematic diagram;
In figure: 1, driven gear, 2, driving gear, 3, retainer, 4, gear frame, 5, housing, 6, floating bearing, 7, sliding key shaft, 8, power input shaft, 9, universal joint, 10, pto＝power take-off, 11, hydraulic jack, 12, hydraulic piston, 13, seal ring, 14, slideway, 15, slide block, 16, gearshift driver plate, 17, umbrella planetary pinion, 18, gear shaft, 19, an axle, 20, two axles, 21, three axles, 22, four axles.
Embodiment
Provide the specific embodiment of the present invention below with reference to accompanying drawing, be used for structure of the present invention to be described further.
Embodiment 1: with reference to Fig. 1-3.This gear run stepless speed changer, comprises power input shaft 8, and power input shaft 8 is connected with sliding key shaft 7 by universal joint 9, and power input shaft 8, universal joint 9 have formed power input device with sliding key shaft 7.Power input device is connected with transmission device, transmission device comprises the gear frame 4 being arranged in housing 5, on gear frame 4, offer slideway 14, in slideway 14, by slide block 15, retainer 3 is installed, retainer 3 can move in slideway 14, in retainer 3, by floating bearing 6, horizontal gear drive is installed; This mechanism comprises by floating bearing 6 and is arranged on an axle 19 and two axles 20 in retainer 3, on one axle 19 and two axles 20, be separately installed with intermeshing active spur gear 2 and driven spur gear 1, a described axle 19 is connected with power input device by universal joint, the end that described two axles 20 are connected with four axle 22, four axles 22 by universal joint is connected with oil pressure regulating controller by universal joint; Oil pressure regulating controller comprises the pto＝power take-off 10 being connected with driven gear 1 by axle, pto＝power take-off 10 is arranged in hydraulic jack 11, be connected with the gearshift driver plate 16 that is arranged on hydraulic jack 11 tops by bearing, pto＝power take-off 10 is constant with the upper-lower position of gearshift driver plate 16, the upper-lower position of described pto＝power take-off 10 and gearshift driver plate 16 is constant refers to that pto＝power take-off 10 can rotation in gearshift driver plate 16, but it remains unchanged with the upper-lower position of gearshift driver plate 16, moving up and down by gearshift driver plate 16 of pto＝power take-off 10 drives; Gearshift driver plate 16 is fixedly connected with the hydraulic piston 12 being arranged in hydraulic jack 11; Between hydraulic jack 11 and hydraulic piston 12, be provided with seal ring 13, ensured the sealing of hydraulic jack 11.
Working principle: power input shaft 8 rotates, drive sliding key shaft 7 to rotate by universal joint 9, and then drive driving gear 2 to rotate, driving gear 2 rotates and drives driven gear 1 to rotate, in the time that the running resistance of driven gear 1 is greater than the running resistance of gear frame 4 or the driving force of driving gear 2, driving gear 2 rotation meetings produce a tangential force by contact points to driven gear 1.The center of circle of driving gear 2 can obtain one and tangential force opposite direction, equal-sized reaction force simultaneously.Reaction force promotes gear frame 4 and rotates, gear frame 4 produces one and tangential force opposite direction to driven gear 1 center of circle, and size is the doubly thrust of (N is gear frame 4 centre distances are arrived in driving gear 2 centers of circle ratio to gear frame 4 centre distances and driven gear 1 center of circle) of driving gear 2 center of circle thrust N.Driven gear 1 does the rotation with driving gear 2 direction of rotation, in the time of needs speed change, regulate regulating controller, stir gearshift driver plate 16, upwards or move up and down, in the time that hydraulic piston 12 moves upward, pto＝power take-off 10 moves upward hydraulic piston 12, drive retainer 3 to move right, increase gear frame 4 centre distances are arrived in driving gear 2 centers of circle ratio to gear frame 4 centre distances and driven gear 1 center of circle, reduced output speed, increased output torque; It is contrary in the time that hydraulic piston 12 moves downward, retainer 3 is to left movement, increase the distance of driven gear 1 center of circle to gear frame 4 centers, reduce driving gear 2 centers of circle and arrived the ratio of gear frame 4 centre distances to gear frame 4 centre distances and driven gear 1 center of circle, improve output speed, reduce output torque, realized stepless change process.
Embodiment 2: with reference to Fig. 4-5, this gear run stepless speed changer, comprises power input shaft 8, and power input shaft 8 is connected with sliding key shaft 7 by universal joint 9, and power input shaft 8, universal joint 9 have formed power input device with sliding key shaft 7.Power input device is connected with transmission device, transmission device comprises the gear frame 4 being arranged in housing 5, the top of gear frame 4 offers slideway 14, retainer 3 is arranged in the slideway 14 of gear frame 4 and can in slideway 14, moves by slide block 15, in retainer 3, by floating bearing 6, rectilinear gear drive is installed, this mechanism comprises from top to bottom by floating bearing 6 and is arranged on three axles 21 in retainer 3, on three axles 21, driven wheel of differential 1 is installed, that engages with driven wheel of differential 1 is arranged on the umbrella planetary pinion 17 on gear shaft 18, engage with the drive bevel gear 2 being arranged on sliding key shaft 7 below of described umbrella planetary pinion 17, described three axle 21 tops are connected with oil pressure regulating controller, this oil pressure regulating controller comprises the pto＝power take-off 10 being connected with driven gear 1 by axle, pto＝power take-off 10 is arranged in hydraulic jack 11, be connected with the gearshift driver plate 16 that is arranged on hydraulic jack 11 tops by bearing, pto＝power take-off 10 is constant with the upper-lower position of gearshift driver plate 16, described pto＝power take-off 10 is constant with the upper-lower position of gearshift driver plate 16, refer to that pto＝power take-off 10 can be in the rotation in driver plate 16 of shifting gears, but it remains unchanged with the upper-lower position of gearshift driver plate 16, moving up and down by gearshift driver plate 16 of pto＝power take-off 10 drives, gearshift driver plate 16 is fixedly connected with the hydraulic piston 12 being arranged in hydraulic jack 11, between hydraulic jack 11 and hydraulic piston 12, be provided with seal ring 13, ensured the sealing of hydraulic jack 11.
Working principle: when driven wheel of differential 1 running resistance is greater than the rotational resistance of gear frame 4 or the driving force of drive bevel gear 2; Drive bevel gear 2 rotations can promote umbrella planetary pinion 17 and produce the kinetic potential of a displacement, and it is mobile that umbrella planetary pinion 17 promotes retainer 3 generations, then promotes gear frame 4 and move.Gear frame 4 produces thrust to driven wheel of differential 1 center of circle.Under thrust, driven gear 1 does the rotation with driving gear 2 opposite directions.It is nearer that retainer 3 centre distance pass gear frame 4 centers, and the larger rotating speed of output torque is lower, otherwise moment of torsion is less, and rotating speed is higher.In the time of needs speed change, regulate regulating controller, stir gearshift driver plate 16, hydraulic piston 12 upwards or move up and down, in the time that hydraulic piston 12 moves upward, pto＝power take-off 10 moves upward, and drives retainer 3 to move right, and has increased planetary pinion 17 centers and use to gear frame 4 centre distances and driven gear 1 center the ratio of gear frame 4 centre distances, increase output torque, reduce output speed; It is contrary in the time that hydraulic piston 12 moves downward, retainer 3 is to left movement, reduced planetary pinion 17 centers and use to gear frame 4 centre distances and driven gear 1 center the ratio of gear frame 4 centre distances, reduces output torque, improve output speed, realize stepless change process.
Protection scope of the present invention is not limited to above embodiment, and every or the gear transmission buncher that be equal to and with technical solution of the present invention principle identical speed changer identical with technical solution of the present invention structure all belong to the protection domain of invention.
Claims (10)
1. gear run stepless speed changer, it is characterized in that comprising power input device, the output terminal of power input device is connected with transmission device, the output terminal of transmission device is connected with oil pressure regulating controller by universal coupling device, transmission device comprises the gear frame (4) being arranged in housing (5), on gear frame (4), offer slideway (14), in slideway (14), by slide block (15), retainer (3) is installed, retainer (3) can move in slideway (14), in retainer (3), by floating bearing (6), gear drive is installed.
2. gear transmission buncher according to claim 1, it is characterized in that described gear drive is horizontal, comprise by floating bearing (6) and be arranged on an axle (19) and two axles (20) in retainer (3), on one axle (19) and two axles (20), be separately installed with intermeshing driving gear (2) and driven gear (1), a described axle (19) is connected with power input device by universal joint, and described two axles (20) are connected with oil pressure regulating controller by universal coupling device.
3. gear transmission buncher according to claim 2, is characterized in that described driving gear (2) and driven gear (1) are spur gear or helical gear simultaneously.
4. according to gear transmission buncher described in claim 2 or 3, it is characterized in that described universal coupling device comprises the universal joint being connected with two axles (20), pto＝power take-off (10) respectively, is provided with four axles (22) between two universal joints.
5. gear transmission buncher according to claim 1, it is characterized in that described gear drive is rectilinear, comprise from top to bottom by floating bearing (6) and be arranged on three axles (21) in retainer (3), driven gear (1) is installed on three axles (21), that engages with driven gear (1) is arranged on the umbrella planetary pinion (17) on gear shaft (18), engage with the driving gear (2) being arranged on sliding key shaft (7) below of described umbrella planetary pinion (17), described three axles (21) top is connected with oil pressure regulating controller.
6. gear transmission buncher according to claim 5, is characterized in that described driving gear (2) and driven gear (1) are bevel gear simultaneously.
7. according to gear transmission buncher described in claim 5 or 6, it is characterized in that described driven gear (1), gear shaft (18), driving gear (2) are all arranged in retainer (3).
8. according to gear transmission buncher described in claim 4 or 7, it is characterized in that described power input device comprises power input shaft (8), power input shaft (8) is connected with sliding key shaft (7) by universal joint (9), and sliding key shaft (7) is connected with gear drive or is directly connected with gear transmission structure by universal joint.
9. according to gear transmission buncher described in claim 4 or 7, it is characterized in that described regulating controller comprises the pto＝power take-off (10) being connected with driven gear (1) by axle, pto＝power take-off (10) is arranged in hydraulic jack (11), be connected with the gearshift driver plate (16) that is arranged on hydraulic jack (11) top by bearing, pto＝power take-off (10) is constant with the upper-lower position of gearshift driver plate (16), and gearshift driver plate (16) is fixedly connected with the hydraulic piston (12) being arranged in hydraulic jack (11).
10. gear transmission buncher according to claim 9, is characterized in that being provided with seal ring (13) between hydraulic jack (11) and hydraulic piston (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410196428.8A CN103939537B (en) | 2014-05-12 | 2014-05-12 | Gear run stepless speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410196428.8A CN103939537B (en) | 2014-05-12 | 2014-05-12 | Gear run stepless speed changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103939537A true CN103939537A (en) | 2014-07-23 |
| CN103939537B CN103939537B (en) | 2016-07-06 |
Family
ID=51187351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410196428.8A Expired - Fee Related CN103939537B (en) | 2014-05-12 | 2014-05-12 | Gear run stepless speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103939537B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196592A1 (en) * | 2018-04-09 | 2019-10-17 | 吴方平 | Vehicle transmission differential device |
| CN113187857A (en) * | 2021-04-28 | 2021-07-30 | 曾昭达 | Spherical umbrella arc bevel gear transmission mechanism |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5352162A (en) * | 1992-11-16 | 1994-10-04 | Coronel Paul K | Dual concentric positively infinitely variable rotary motion transmission |
| CN1147607A (en) * | 1995-10-12 | 1997-04-16 | 宋建军 | Planetary-gear constant-power stepless speed variator |
| US5870931A (en) * | 1995-05-18 | 1999-02-16 | Louis Sportelli | Protective cover assembly for commercial vehicle drive trains |
| CN1467391A (en) * | 2002-07-08 | 2004-01-14 | 宋建军 | Energy generating machine |
| CN1683808A (en) * | 2004-04-16 | 2005-10-19 | 李军 | Combined automatic stepless speed variator |
| CN1995776A (en) * | 2006-01-05 | 2007-07-11 | 李维农 | Gyro-coupled continuously variable transmission |
| CN101025219A (en) * | 2006-02-20 | 2007-08-29 | 罗勇 | Peripheral gear pole-free speed variator |
| JP2013095391A (en) * | 2011-11-05 | 2013-05-20 | Nippon Cable Co Ltd | Cooling mechanism of driving shaft connecting part of cableway |
-
2014
- 2014-05-12 CN CN201410196428.8A patent/CN103939537B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5352162A (en) * | 1992-11-16 | 1994-10-04 | Coronel Paul K | Dual concentric positively infinitely variable rotary motion transmission |
| US5870931A (en) * | 1995-05-18 | 1999-02-16 | Louis Sportelli | Protective cover assembly for commercial vehicle drive trains |
| CN1147607A (en) * | 1995-10-12 | 1997-04-16 | 宋建军 | Planetary-gear constant-power stepless speed variator |
| CN1467391A (en) * | 2002-07-08 | 2004-01-14 | 宋建军 | Energy generating machine |
| CN1683808A (en) * | 2004-04-16 | 2005-10-19 | 李军 | Combined automatic stepless speed variator |
| CN1995776A (en) * | 2006-01-05 | 2007-07-11 | 李维农 | Gyro-coupled continuously variable transmission |
| CN101025219A (en) * | 2006-02-20 | 2007-08-29 | 罗勇 | Peripheral gear pole-free speed variator |
| JP2013095391A (en) * | 2011-11-05 | 2013-05-20 | Nippon Cable Co Ltd | Cooling mechanism of driving shaft connecting part of cableway |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196592A1 (en) * | 2018-04-09 | 2019-10-17 | 吴方平 | Vehicle transmission differential device |
| CN113187857A (en) * | 2021-04-28 | 2021-07-30 | 曾昭达 | Spherical umbrella arc bevel gear transmission mechanism |
| CN113187857B (en) * | 2021-04-28 | 2023-09-29 | 曾昭达 | Spherical umbrella spiral bevel gear transmission mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103939537B (en) | 2016-07-06 |
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Granted publication date: 20160706 Termination date: 20200512 |