CN105605179B - A kind of three class gear shift gear-box - Google Patents

A kind of three class gear shift gear-box Download PDF

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Publication number
CN105605179B
CN105605179B CN201510782731.0A CN201510782731A CN105605179B CN 105605179 B CN105605179 B CN 105605179B CN 201510782731 A CN201510782731 A CN 201510782731A CN 105605179 B CN105605179 B CN 105605179B
Authority
CN
China
Prior art keywords
gear
change
intermediate sleeve
transmission
speed
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.)
Expired - Fee Related
Application number
CN201510782731.0A
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Chinese (zh)
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CN105605179A (en
Inventor
马平
陈勇
尹安邦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ma Ping
Original Assignee
Individual
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Filing date
Publication date
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Priority to CN201510782731.0A priority Critical patent/CN105605179B/en
Publication of CN105605179A publication Critical patent/CN105605179A/en
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Publication of CN105605179B publication Critical patent/CN105605179B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H37/00Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02Toothed members; Worms
    • F16H55/17Toothed wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30Constructional features of the final output mechanisms
    • F16H63/32Gear shift yokes, e.g. shift forks

Abstract

The invention belongs to gear-box technical fields, refer in particular to a kind of three class gear shift gear-box, and input gear mechanism is connect with differential mechanism by three class gear shift gear mechanism transmission;Three class gear shift gear mechanism includes the output gear and three transmission gears with the differential gear of differential mechanism engaged transmission;The intermediate sleeve rotated synchronously with change gear shaft, change gear are respectively arranged between transmission gear adjacent two-by-two, change gear is connect with shift fork;The one of change gear of fork controls connects corresponding intermediate sleeve and corresponding transmission gear simultaneously, another change gear is then connect with another intermediate sleeve, one of transmission gear dallies with corresponding input gear engaged transmission, another two transmission gear, exports different revolving speeds outward by differential mechanism;The present invention makes electric vehicle that can also carry out speed change in high speed, middling speed, low speed third gear, using, using high speed, maximum deceleration ratio is up to 1:32-1:40, especially in climbing, very energetically, using comfortable when middling speed, climbing when hauling goods.

Description

A kind of three class gear shift gear-box
Technical field:
The invention belongs to gear-box technical fields, refer in particular to a kind of three class gear shift gear-box.
Background technique:
Electro-tricycle, carriage are poor in the occasion using effect of some road conditions complexity.Such as: mire, road surface convex-concave Uneven, big, soft spots of road bed of the gradient etc..Due to currently, electro-tricycle, carriage gearbox generally without mark structure or two grades Speed change, maximum deceleration ratio is limited within 1:26, especially weak when hauling goods, climbing, and vehicle is caused to be unable to satisfy use Family use demand brings some inconvenience to production, life.
Summary of the invention:
The object of the present invention is to provide a kind of reduction ratio greatly, the three class gear shift gear-box of climbing energetically.
The present invention is implemented as follows:
A kind of three class gear shift gear-box, includes cabinet, and input gear mechanism, differential mechanism are provided in cabinet, input Gear mechanism is connect with differential mechanism by three class gear shift gear mechanism transmission, and the input gear mechanism includes input gear axle And three input gears in input gear axle are set;The three class gear shift gear mechanism includes change gear shaft and setting The change that three class gear shift is able to achieve with the output gear of the differential gear engaged transmission of differential mechanism and three on change gear shaft Fast gear;Intermediate sleeve, intermediate sleeve and gear teeth are respectively arranged on change gear shaft between transmission gear adjacent two-by-two Wheel shaft rotates synchronously;Change gear is respectively arranged between transmission gear adjacent two-by-two, change gear is connect with shift fork;Fork controls its In change gear connect corresponding intermediate sleeve and corresponding transmission gear simultaneously, another change gear then connects with another intermediate sleeve It connects, so that one of transmission gear is dallied with corresponding input gear engaged transmission, another two transmission gear, fork controls are different Variable gearing different revolving speeds is exported by differential mechanism outward.
In the above-mentioned technical solutions, three shifting gears are respectively high gear, intermediate gear, low-speed gear, height Fast gear, intermediate gear and low-speed gear input gear engaged transmission corresponding with input gear mechanism, the intermediate sleeve include The first intermediate sleeve between high gear and intermediate gear, between intermediate gear and low-speed gear second among Set, the first intermediate sleeve, the second intermediate sleeve and change gear shaft rotate synchronously, and the change gear includes that the first change gear and second are hung Wheel, the first change gear control the first intermediate sleeve, high gear or the first intermediate sleeve, middling speed between high gear and intermediate gear Gear connection;Second change gear controls the second intermediate sleeve between intermediate gear and low-speed gear and connect with low-speed gear.
In the above-mentioned technical solutions, the side of the high gear, intermediate gear and low-speed gear is outward extended with cylinder The extension of shape, the outer surface of extension and the first intermediate sleeve, the second intermediate sleeve outer surface be provided with axially be arranged it is convex Tooth;
The first change gear, the second change gear inner wall on be provided with the groove engaged with double wedge;
When the groove of the first change gear is engaged with the double wedge of high gear and the first intermediate sleeve, the groove of the second change gear and second When the double wedge engagement of intermediate sleeve, high gear and change gear shaft are rotated synchronously, intermediate gear, low-speed gear idle running;
When the groove of the first change gear is engaged with the double wedge of intermediate gear and the first intermediate sleeve, the groove of the second change gear and second When the double wedge engagement of intermediate sleeve, intermediate gear and change gear shaft are rotated synchronously, high gear, low-speed gear idle running;
When the groove of the first change gear is engaged with the double wedge of the first intermediate sleeve, the groove of the second change gear and the second intermediate sleeve and low When the double wedge engagement of fast gear, low-speed gear and change gear shaft are rotated synchronously, high gear, intermediate gear idle running.
In the above-mentioned technical solutions, it is connected by key between the intermediate sleeve and change gear shaft.
In the above-mentioned technical solutions, the shift fork includes the shift fork claw being in U-shape and shift fork axle, the both ends of shift fork claw It is connected on two change gears, shift fork axle movement drives shift fork claw and then drives the axial movement of two change gears, one end of shift fork axle It stretches out outside cabinet.
In the above-mentioned technical solutions, three input gears are respectively the first input gear, the second input gear, third Input gear, three input gears are an integral structure with input gear axle.
In the above-mentioned technical solutions, the differential of three input gears, three transmission gears, output gear, differential mechanism Gear is helical gear.
In the above-mentioned technical solutions, the output gear is an integral structure with change gear shaft.
The advantage that the present invention protrudes compared with prior art is:
1, the present invention is provided with three class gear shift gear, become electric vehicle can also in high speed, middling speed, low speed third gear Speed, using, using high speed, maximum deceleration ratio is up to 1:32-1:40, especially in climbing, very when middling speed, climbing when hauling goods Energetically, using comfortable;
2, the present invention has filled up the blank of the fast shift of electric vehicle three, at user option under different loads difference road conditions Gear is richer, more practical and safe and reliable;
3, shift of the present invention is simple and convenient, as long as pulling shift fork axle that can carry out the speed change between third gear.
Detailed description of the invention:
Fig. 1 is stereoscopic schematic diagram when cabinet of the invention is not installed;
Fig. 2 is main view when cabinet of the invention is not installed;
Fig. 3 is stereoscopic schematic diagram of the invention;
Fig. 4 is the schematic diagram of three class gear shift gear mechanism of the invention;
Fig. 5 is the schematic diagram of change gear shaft of the invention;
Fig. 6 is low-speed gear schematic diagram of the invention;
Fig. 7 is intermediate gear schematic diagram of the invention;
Fig. 8 is high gear schematic diagram of the invention;
Fig. 9 is the schematic diagram of the first intermediate sleeve of the invention;
Figure 10 is the schematic diagram of the second intermediate sleeve of the invention;
Figure 11 is the schematic diagram of the first change gear of the invention (the second change gear).
Specific embodiment:
With specific embodiment, the invention will be further described below, referring to Fig. 1-11:
A kind of three class gear shift gear-box includes cabinet, and cabinet includes left shell 1 and right shell body 2, is arranged in cabinet There are input gear mechanism, differential mechanism 3, input gear mechanism is connect with differential mechanism by three class gear shift gear mechanism transmission, described Input gear mechanism includes input gear axle 4 and three input gears being arranged in input gear axle 4, and respectively first is defeated Enter gear 5, the second input gear 6 and third input gear 7;The three class gear shift gear mechanism include change gear shaft 8 and It is arranged on change gear shaft 8 and is able to achieve third gear with the output gear 10 of 9 engaged transmission of differential gear of differential mechanism 3 and three The transmission gear of speed change;Intermediate sleeve, intermediate sleeve are respectively arranged on change gear shaft 8 between transmission gear adjacent two-by-two It is rotated synchronously with change gear shaft 8;Change gear is respectively arranged between transmission gear adjacent two-by-two, change gear and shift fork 11 connect It connects;Shift fork 11 controls one of change gear while connecting corresponding intermediate sleeve and corresponding transmission gear, another change gear then with The connection of another intermediate sleeve makes a turn one of transmission gear with corresponding input gear engaged transmission, another two gear teeth Turn, shift fork 11 controls different variable gearings and exports different revolving speeds outward by differential mechanism 3.
Above three shifting gear is respectively high gear 12, intermediate gear 13, low-speed gear 14, high gear 12 and One input gear, 5 engaged transmission, 6 engaged transmission of intermediate gear 13 and the second input gear, low-speed gear 14 and third input tooth 7 engaged transmission of wheel.High gear 12, intermediate gear 13 and the input gear engagement corresponding with input gear mechanism of low-speed gear 14 Transmission, the intermediate sleeve includes the first intermediate sleeve 15 between high gear 12 and intermediate gear 13, is located at intermediate gear The second intermediate sleeve 16 between 13 and low-speed gear 14, the first intermediate sleeve 15, the second intermediate sleeve 16 are synchronous with change gear shaft 8 to be turned Dynamic, the change gear includes the first change gear 17 and the second change gear 18, and the first change gear 17 is located at high gear 12 and intermediate gear 13 Between control the first intermediate sleeve 15, high gear 12 or the first intermediate sleeve 15, intermediate gear 13 connect;During second change gear 18 is located at The second intermediate sleeve 16 is controlled between fast gear 13 and low-speed gear 14 to connect with low-speed gear 14.
The side of above-mentioned high gear 12, intermediate gear 13 and low-speed gear 14 is outward extended with the extension of tubular 19, the inner hole wall of high gear 12, intermediate gear 13 and low-speed gear 14 and extension 19 is smooth.High gear 12, The length of extension 19 on intermediate gear 13 and low-speed gear 14 is designed according to the actual situation.In the appearance of extension 19 Face and the first intermediate sleeve 15,16 outer surface of the second intermediate sleeve are provided with the double wedge 20 being axially arranged, the double wedge 20 of the present embodiment It is circumferential uniformly distributed.
The first change gear 17, the second change gear 18 inner wall on be provided with the groove 21 engaged with double wedge 20;
When the groove 21 of the first change gear 17 is engaged with the double wedge 20 of high gear 12 and the first intermediate sleeve 15, the second change gear 18 Groove 21 when being engaged with the double wedge 20 of the second intermediate sleeve 16, high gear 12 and change gear shaft 8 rotate synchronously, intermediate gear 13, low-speed gear 14 dallies;
When the groove 21 of the first change gear 17 is engaged with the double wedge 20 of intermediate gear 13 and the first intermediate sleeve 15, the second change gear 18 Groove 21 when being engaged with the double wedge 20 of the second intermediate sleeve 16, intermediate gear 13 and change gear shaft 8 rotate synchronously, high gear 12, low-speed gear 14 dallies;
When the groove 21 of the first change gear 17 is engaged with the double wedge 20 of the first intermediate sleeve 15, the groove 21 of the second change gear 18 and When the double wedge 20 of two intermediate sleeves 16 and low-speed gear 14 engages, low-speed gear 14 and change gear shaft 8 are rotated synchronously, high gear 12, intermediate gear 13 dallies.
It is connected by key between above-mentioned first intermediate sleeve 15, the second intermediate sleeve 16 and change gear shaft 8, such as: six teeth flower Key, i.e., in the setting of 8 outer surface of change gear shaft, there are six double wedges, and the first intermediate sleeve 15,16 inner surface of the second intermediate sleeve are provided with The keyway 22 to match is driven more steady.
Above-mentioned shift fork 11 includes the shift fork claw 23 being in U-shape and shift fork axle 24, the first change gear 17, the second change gear 18 it is outer Surface is provided with annular groove, and the both ends of shift fork claw 23 are connected in the annular groove of two change gears 17,18, shift fork axle 24 Movement drives shift fork claw 23 and then drives two change gear axis 17,18 to movement, and one end of shift fork axle 24 is stretched out outside cabinet.
Above-mentioned first input gear 5, the second input gear 6, third input gear 7 and input gear axle 4 are integral type knot Structure.
Above-mentioned first input gear 5, the second input gear 6, third input gear 7, high gear 12, intermediate gear 13, Low-speed gear 14, output gear 10, differential mechanism 3 differential gear 9 be helical gear.Helical gear Transmission is steady, and stress is good, noise It is small.
Above-mentioned output gear 10 is an integral structure with change gear shaft 8.
The both ends of input gear axle 4 of the invention, change gear shaft 8 and differential mechanism 3 pass through bearing 25 and are supported on left housing On body 1, right shell body 2.
The working principle of the invention:
When being climbed, the first change gear 17 and the second change gear 18 are pulled by the way that shift fork 11 is axial, by the first change gear 17 In outside the first intermediate sleeve 15, the second change gear 18 is located at outside the second intermediate sleeve 16 and low-speed gear 14, low-speed gear 14 and gear teeth Wheel shaft 8 rotates synchronously, and high gear 12, intermediate gear 13 dally, and third input gear 7 engages biography with low-speed gear 14 at this time It is dynamic, and engaged by the output gear 10 on change gear shaft 8 with the differential gear 9 on differential mechanism 3, the slow-speed of revolution is exported outward;
When hauling goods, the first change gear 17 and the second change gear 18 are pulled by the way that shift fork 11 is axial, the first change gear 17 is located at Outside intermediate gear 13 and the first intermediate sleeve 15, the second change gear 18 is located at outside the second intermediate sleeve 16, intermediate gear 13 and transmission gear Axis 8 rotates synchronously, and high gear 12, low-speed gear 14 dally, at this time the second input gear 6 and 13 engaged transmission of intermediate gear, And engaged by the output gear 10 on change gear shaft 8 with the differential gear 9 on differential mechanism 3, intermediate speed is exported outward;
When running normally, the first change gear 17 and the second change gear 18 are pulled by the way that shift fork 11 is axial, by the first change gear 17 In outside high gear 12 and the first intermediate sleeve 15, the second change gear 18 is located at outside the second intermediate sleeve 16, high gear 12 and gear teeth Wheel shaft 8 rotates synchronously, and intermediate gear 13, low-speed gear 14 dally, and the first input gear 5 engages biography with high gear 12 at this time It is dynamic, and engaged by the output gear 10 on change gear shaft 8 with the differential gear 9 on differential mechanism 3, high revolving speed is exported outward.
Above-described embodiment is only one of presently preferred embodiments of the present invention, and but not intended to limit the scope of the present invention, therefore: The equivalence changes that all shape, structures under this invention, principle are done, should all be covered by within protection scope of the present invention.

Claims (7)

1. a kind of three class gear shift gear-box, includes cabinet, input gear mechanism, differential mechanism, feature are provided in cabinet Be: input gear mechanism is connect with differential mechanism by three class gear shift gear mechanism transmission, and the input gear mechanism includes Input gear axle and three input gears being arranged in input gear axle, three input gears be respectively the first input gear, Second input gear, third input gear;The three class gear shift gear mechanism includes change gear shaft and is arranged in gear teeth The transmission gear that three class gear shift is able to achieve with the output gear of the differential gear engaged transmission of differential mechanism and three on wheel shaft;? Intermediate sleeve is respectively arranged on the change gear shaft between adjacent transmission gear two-by-two, intermediate sleeve is synchronous with change gear shaft to be turned It is dynamic;Change gear is respectively arranged between transmission gear adjacent two-by-two, change gear is connect with shift fork;The one of change gear of fork controls Corresponding intermediate sleeve and corresponding transmission gear are connected simultaneously, another change gear is then connect with another intermediate sleeve, makes wherein one A transmission gear dallies with corresponding input gear engaged transmission, another two transmission gear, the different transmission gear of fork controls Transmission exports different revolving speeds by differential mechanism outward;
Three shifting gears are respectively high gear, intermediate gear, low-speed gear, high gear, intermediate gear and low-speed gear Input gear engaged transmission corresponding with input gear mechanism, the intermediate sleeve include between high gear and intermediate gear The first intermediate sleeve, the second intermediate sleeve between intermediate gear and low-speed gear, the first intermediate sleeve, the second intermediate sleeve and become Fast gear shaft rotates synchronously, and the change gear includes the first change gear and the second change gear, and the first change gear is located at high gear and middling speed The first intermediate sleeve, high gear or the first intermediate sleeve, intermediate gear connection are controlled between gear;Second change gear is located at intermediate gear The second intermediate sleeve is controlled between low-speed gear to connect with low-speed gear;
When being climbed, the first change gear and the second change gear are axially pulled by shift fork, the first change gear is located at the first intermediate sleeve Outside, the second change gear is located at outside the second intermediate sleeve and low-speed gear, and low-speed gear and change gear shaft rotate synchronously, high gear, Intermediate gear dallies, at this time third input gear and low-speed gear engaged transmission, and passes through the output gear on change gear shaft It is engaged with the differential gear on differential mechanism, exports the slow-speed of revolution outward;
When hauling goods, the first change gear and the second change gear are axially pulled by shift fork, the first change gear is located at intermediate gear and the Outside one intermediate sleeve, the second change gear is located at outside the second intermediate sleeve, and intermediate gear and change gear shaft rotate synchronously, high gear, low The idle running of fast gear, the second input gear and intermediate gear engaged transmission at this time, and by output gear on change gear shaft with Differential gear engagement on differential mechanism, exports intermediate speed outward;
When running normally, the first change gear and the second change gear are axially pulled by shift fork, by the first change gear be located at high gear with Outside first intermediate sleeve, the second change gear is located at outside the second intermediate sleeve, and high gear and change gear shaft rotate synchronously, intermediate gear, Low-speed gear dallies, at this time the first input gear and high gear engaged transmission, and passes through the output gear on change gear shaft It is engaged with the differential gear on differential mechanism, exports high revolving speed outward.
2. a kind of three class gear shift gear-box according to claim 1, it is characterised in that: the high gear, intermediate gear And the side of low-speed gear is outward extended with the extension of tubular, in the outer surface of extension and the first intermediate sleeve, second Between set outer surface be provided with the double wedge being axially arranged;
The first change gear, the second change gear inner wall on be provided with the groove engaged with double wedge;
When the groove of the first change gear is engaged with the double wedge of high gear and the first intermediate sleeve, among the groove of the second change gear and second When the double wedge engagement of set, high gear and change gear shaft are rotated synchronously, intermediate gear, low-speed gear idle running;
When the groove of the first change gear is engaged with the double wedge of intermediate gear and the first intermediate sleeve, among the groove of the second change gear and second When the double wedge engagement of set, intermediate gear and change gear shaft are rotated synchronously, high gear, low-speed gear idle running;
When the groove of the first change gear is engaged with the double wedge of the first intermediate sleeve, the groove of the second change gear and the second intermediate sleeve and low speed tooth When the double wedge engagement of wheel, low-speed gear and change gear shaft are rotated synchronously, high gear, intermediate gear idle running.
3. a kind of three class gear shift gear-box according to claim 1, it is characterised in that: the intermediate sleeve and transmission gear It is connected by key between axis.
4. a kind of three class gear shift gear-box according to claim 1, it is characterised in that: the shift fork includes to be in U-shape Shift fork claw and shift fork axle, the both ends of shift fork claw are connected on two change gears, and shift fork axle movement drives shift fork claw in turn Two change gears are driven to move axially, one end of shift fork axle is stretched out outside cabinet.
5. a kind of three class gear shift gear-box according to claim 1, it is characterised in that: three input gears and input Gear shaft is an integral structure.
6. a kind of three class gear shift gear-box according to claim 1, it is characterised in that: three input gears, three Transmission gear, output gear, differential mechanism differential gear be helical gear.
7. a kind of three class gear shift gear-box according to claim 1, it is characterised in that: the output gear and transmission gear Axis is an integral structure.
CN201510782731.0A 2015-11-14 2015-11-14 A kind of three class gear shift gear-box Expired - Fee Related CN105605179B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510782731.0A CN105605179B (en) 2015-11-14 2015-11-14 A kind of three class gear shift gear-box

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Application Number Priority Date Filing Date Title
CN201510782731.0A CN105605179B (en) 2015-11-14 2015-11-14 A kind of three class gear shift gear-box

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CN105605179A CN105605179A (en) 2016-05-25
CN105605179B true CN105605179B (en) 2019-02-12

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111041724B (en) * 2019-12-31 2022-06-17 浙江元鸿纺织科技有限公司 Low energy consumption sewing machine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859871A (en) * 1970-06-02 1975-01-14 Toyota Motor Co Ltd Speed change gear device
JPS5467847A (en) * 1977-11-10 1979-05-31 Kubota Ltd Running speed change gear for tractor
CN201391592Y (en) * 2009-05-05 2010-01-27 建湖鑫威机械有限公司 Transmission box
CN202597602U (en) * 2012-03-09 2012-12-12 重庆乔冠机械制造有限公司 Two-stage three gear speed transmission
CN103836128A (en) * 2014-03-04 2014-06-04 李红波 Three-gear variable speed transmission mechanism of electrocar
CN104279321A (en) * 2014-09-18 2015-01-14 范兆军 Rear axle gear shifting speed change device of electric vehicle
CN205136505U (en) * 2015-11-14 2016-04-06 浙江尤里卡机电有限公司 Three keep off stepcchange gearbox

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859871A (en) * 1970-06-02 1975-01-14 Toyota Motor Co Ltd Speed change gear device
JPS5467847A (en) * 1977-11-10 1979-05-31 Kubota Ltd Running speed change gear for tractor
CN201391592Y (en) * 2009-05-05 2010-01-27 建湖鑫威机械有限公司 Transmission box
CN202597602U (en) * 2012-03-09 2012-12-12 重庆乔冠机械制造有限公司 Two-stage three gear speed transmission
CN103836128A (en) * 2014-03-04 2014-06-04 李红波 Three-gear variable speed transmission mechanism of electrocar
CN104279321A (en) * 2014-09-18 2015-01-14 范兆军 Rear axle gear shifting speed change device of electric vehicle
CN205136505U (en) * 2015-11-14 2016-04-06 浙江尤里卡机电有限公司 Three keep off stepcchange gearbox

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