CN104329434A - Hydraulic mechanical dual-power flow transmission gearbox - Google Patents

Hydraulic mechanical dual-power flow transmission gearbox Download PDF

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Publication number
CN104329434A
CN104329434A CN201410429983.0A CN201410429983A CN104329434A CN 104329434 A CN104329434 A CN 104329434A CN 201410429983 A CN201410429983 A CN 201410429983A CN 104329434 A CN104329434 A CN 104329434A
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China
Prior art keywords
gear
hydraulic
synchronizer
pair
transmission
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Pending
Application number
CN201410429983.0A
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Chinese (zh)
Inventor
朱镇
高翔
潘道远
夏长高
商高高
韩江义
朱彧
韩梅梅
闫成
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Jiangsu University
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Jiangsu University
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Priority to CN201410429983.0A priority Critical patent/CN104329434A/en
Publication of CN104329434A publication Critical patent/CN104329434A/en
Pending legal-status Critical Current

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    • 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
    • F16H47/00Combinations of mechanical gearing with fluid clutches or fluid gearing
    • F16H47/02Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
    • F16H47/04Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
    • 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
    • F16H47/00Combinations of mechanical gearing with fluid clutches or fluid gearing
    • F16H47/02Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
    • F16H47/04Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
    • F16H2047/045Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion the fluid gearing comprising a plurality of pumps or motors

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Gearings (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention discloses a hydraulic mechanical dual-power flow transmission gearbox. The hydraulic mechanism dual-power flow transmission gearbox comprises an input shaft, an output shaft, a hydraulic transmission mechanism, a planet gear mechanism and a gear shifting mechanism, wherein the hydraulic transmission mechanism comprises a hydraulic synchronizer, a hydraulic transmission input gear pair, a variable pump, a constant displacement motor, a hydraulic transmission output gear pair and a hydraulic transmission output shaft; the planet gear mechanism comprises a mechanical transmission input gear pair, a sun wheel brake, a gear ring, a solar wheel and a planet carrier; the gear shifting mechanism comprises a planet carrier output shaft, a reversing synchronizer, a high-shift gear pair, a low-shift gear pair, a reversing gear pair and a forward gear synchronizer. Through combination and separation of the different synchronizers and separators, rapid free switching between the two work modes of hydraulic mechanical transmission and pure mechanical transmission is realized, and the operation efficiency, power performance and economical efficiency of a vehicle are increased; the combination of three working conditions and seven modes is realized by only using the three synchronizers and one brake, so that the structure is simple and compact.

Description

Hydraulic machinery dual-stream transmission gearbox
Technical field
The present invention relates to a kind of automatic transmission case, specifically provide a kind of hydraulic machinery dual-stream transmission gearbox.
Background technique
Automatic transmission case is the core of system of vehicle transmission power system research, and the power character of its properties influence vehicle, Economy also affect the manufacturing efficiency of agri-vehicle.
Hydraulic machinery dual-stream transmission is often applied on big-powered tractor with its mechanically operated efficient and hydraulicdriven stepless change, and combine with electronic control technology, realize the automatic adjustment of gearbox, greatly can alleviate the labor intensity of driver, improve the Security of agricultural operation and hauling operation, power character and Economy.
The power that fluid drive mechanism transmits is with variable pump displacement change continuously adjustabe, and mechanical transmission mechanism transmitted power Spline smoothing, Hydrostatic-mechanical Transmission is stepless adjustable.
Complicated for meeting farm work operating mode, the efficient feature of hauling operation, designs a kind of gearbox integrating Field-working Tractor-implement and hauling operation function.By the combination of synchronizer and break, realize the switching of Hydrostatic-mechanical Transmission and pure mechanical transmission two kinds of mode of operations, be conducive to improving the operating efficiency of vehicle, power character and Economy.
Current most of automatic transmission case is complicated, directly cannot adapt to farm machinery farm work and hauling operation two kinds of operating modes to the requirement of operating efficiency, power character and Economy.
Summary of the invention
Goal of the invention: the object of the invention is to solve the problem, provides a kind of hydraulic machinery dual-stream transmission gearbox.The present invention can realize the quick switching of Hydrostatic-mechanical Transmission and pure mechanical transmission two kinds of mode of operations, is conducive to the operating efficiency of raising vehicle, power character and Economy.
Technological scheme: a kind of hydraulic machinery dual-stream transmission gearbox, comprise input shaft, output shaft, fluid drive mechanism, planetary gears and gearshift, described fluid drive mechanism comprises hydraulic synchronization device, hydraulic transmission input gear pair, variable displacement pump, fixed displacement motor, hydraulic transmission output gear wheel set and hydraulic transmission output shaft; Planetary gears comprises mechanical transmission input gear pair, sun gear break, gear ring, sun gear and planet carrier; Gearshift comprises planet carrier output shaft, reversing-gear synchronizer, high-grade gear pair, low regime clutch is secondary, reverse gear is secondary and forward gears synchronizer; Described fluid drive mechanism is connected with input shaft by hydraulic synchronization device, and hydraulic transmission output shaft is connected with sun gear; The gear ring of described planetary gears is connected with input shaft by mechanical transmission input gear pair; Described gearshift is connected with the planet carrier of planetary gears by planet carrier output shaft; Described gearshift respectively by high-grade gear pair, low regime clutch is secondary, reverse gear is secondary is connected with output shaft.The present invention by the joint of different synchronizer and clutch be separated, the fast free realizing Hydrostatic-mechanical Transmission and pure mechanical transmission two kinds of mode of operations switches, and improves the operating efficiency of vehicle, power character and Economy; The present invention only uses three synchronizers and break to complete the combination of three kinds of operating modes, seven kinds of patterns, simple and compact structure.
During idling operation, engine speed changes within the specific limits, but is separated with forward gears synchronizer due to hydraulic synchronization device, reversing-gear synchronizer simultaneously, and the power of motor cannot be passed to output shaft from input shaft, and therefore vehicle is now in idling mode.
During Field-working Tractor-implement, adopt hydraulic machinery shelves to carry out operation, the working condition of various complexity can be adapted to.
During the transmission of hydraulic machinery low-grade location, hydraulic synchronization device engages, and reversing-gear synchronizer is separated, and forward gears synchronizer access low regime clutch is secondary, and sun gear break is separated; Engine portion sub-power, through hydraulic synchronization device, reaches variable displacement pump from hydraulic pressure input gear pair, and variable displacement pump drives fixed displacement motor through hydraulic tubing output flow, and fixed displacement motor torque is secondary through hydrostatic output gear, passes to hydraulic transmission output shaft and drives sun gear; Another part engine power is secondary through mechanical transmission input gear, be delivered to gear ring, the machine power composition mixed power that the hydraulic power transmitted from sun gear and gear ring transmit is delivered to low regime clutch pair through planet carrier, by forward gears synchronizer, exports finally by output shaft.
During the transmission of hydraulic machinery high tap position, hydraulic synchronization device engages, and reversing-gear synchronizer is separated, and forward gears synchronizer accesses high-grade gear pair, and sun gear break is separated; Engine portion sub-power, through hydraulic synchronization device, reaches variable displacement pump from hydraulic pressure input gear pair, and variable displacement pump drives fixed displacement motor through hydraulic tubing output flow, and fixed displacement motor torque is secondary through hydrostatic output gear, passes to hydraulic transmission output shaft and drives sun gear; Another part engine power is secondary through mechanical transmission input gear, be delivered to gear ring, the machine power composition mixed power that the hydraulic power transmitted from sun gear and gear ring transmit is delivered to high-grade gear pair through planet carrier, by forward gears synchronizer, exports finally by output shaft.
During hydraulic machinery reverse gear, reversing-gear synchronizer and hydraulic synchronization device engage simultaneously, and forward gears synchronizer is separated with sun gear break; Engine portion sub-power, through hydraulic synchronization device, reaches variable displacement pump from hydraulic pressure input gear pair, and variable displacement pump drives fixed displacement motor through hydraulic tubing output flow, and fixed displacement motor torque is secondary through hydrostatic output gear, passes to hydraulic transmission output shaft and drives sun gear; Another part engine power is secondary through mechanical transmission input gear, be delivered to gear ring, the machine power composition mixed power that the hydraulic power transmitted from sun gear and gear ring transmit is delivered to reversing-gear synchronizer through planet carrier, is exported finally by output shaft by reverse gear pair.
When tractor hauling operation, take mechanical drive mode, can transmission efficiency be promoted.
During pure mechanical low-grade location transmission, forward gears synchronizer access low regime clutch is secondary, and sun gear break engages, and reversing-gear synchronizer is separated with hydraulic synchronization device; Engine power is delivered to gear ring through mechanical transmission input gear pair, and sun gear is fixed, and power, through planet carrier, is delivered to low regime clutch pair, is exported finally by output shaft by forward gears synchronizer.
During pure mechanical high tap position transmission, forward gears synchronizer accesses high-grade gear pair, and sun gear break engages, and reversing-gear synchronizer is separated with hydraulic synchronization device; Engine power is delivered to gear ring through mechanical transmission input gear pair, and sun gear is fixed, and power, through planet carrier, is delivered to high-grade gear pair, is exported finally by output shaft by forward gears synchronizer.
During pure mechanical reverse transmission, reversing-gear synchronizer and sun gear break engage, and forward gears synchronizer is separated with hydraulic synchronization device; Engine power is delivered to gear ring through mechanical transmission input gear pair, and sun gear is fixed, and power is delivered to reversing-gear synchronizer through planet carrier, is exported finally by output shaft by reverse gear pair.
Beneficial effect: the present invention by the joint of different synchronizer and clutch be separated, the fast free realizing Hydrostatic-mechanical Transmission and pure mechanical transmission two kinds of mode of operations switches, and improves the operating efficiency of vehicle, power character and Economy; The present invention only uses three synchronizers and break to complete the combination of three kinds of operating modes, seven kinds of patterns, simple and compact structure.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention;
Fig. 2 is neutral gear power flow direction schematic diagram of the present invention;
Fig. 3 is the low-grade power flow direction schematic diagram of hydraulic machinery of the present invention;
Fig. 4 is that hydraulic machinery premium power of the present invention flows to schematic diagram;
Fig. 5 is hydraulic machinery reverse gear power flow direction schematic diagram of the present invention;
Fig. 6 is the low-grade power flow direction schematic diagram of the pure machinery of the present invention;
Fig. 7 is that the pure mechanical premium power of the present invention flows to schematic diagram;
Fig. 8 is the present invention's pure mechanical reverse power flow direction schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of hydraulic machinery dual-stream transmission gearbox, comprise input shaft 1, output shaft 2, fluid drive mechanism 3, planetary gears 4 and gearshift 5, described fluid drive mechanism 3 comprises hydraulic synchronization device 31, hydraulic transmission input gear pair 32, variable displacement pump 33, fixed displacement motor 34, hydraulic transmission output gear wheel set 35 and hydraulic transmission output shaft 36; Planetary gears 4 comprises mechanical transmission input gear pair 41, sun gear break 42, gear ring 43, sun gear 44 and planet carrier 45; Gearshift 5 comprises planet carrier output shaft 51, reversing-gear synchronizer 52, high-grade gear pair 53, low regime clutch pair 54, reverse gear secondary 55 and forward gears synchronizer 56; Described fluid drive mechanism 3 is connected with input shaft 1 by hydraulic synchronization device 31, and hydraulic transmission output shaft 36 is connected with sun gear 44; The gear ring 43 of described planetary gears 4 is connected with input shaft 1 by mechanical transmission input gear secondary 41; Described gearshift 5 is connected with the planet carrier 45 of planetary gears 4 by planet carrier output shaft 51; Described gearshift 5 is connected with output shaft 2 respectively by high-grade gear pair 53, low regime clutch pair 54, reverse gear secondary 55.The present invention by the joint of different synchronizer and clutch be separated, the fast free realizing Hydrostatic-mechanical Transmission and pure mechanical transmission two kinds of mode of operations switches, and improves the operating efficiency of vehicle, power character and Economy; The present invention only uses three synchronizers and break to complete the combination of three kinds of operating modes, seven kinds of patterns, simple and compact structure.
As shown in Figure 2, during idling operation, engine speed changes within the specific limits, but cannot be passed to output shaft from input shaft due to the power of hydraulic synchronization device 31, reversing-gear synchronizer 52 and forward gears synchronizer 56 simultaneously escape engine, and therefore vehicle is now in idling mode.
During Field-working Tractor-implement, adopt hydraulic machinery shelves to carry out operation, the working condition of various complexity can be adapted to.
As shown in Figure 3, during the transmission of hydraulic machinery low-grade location, hydraulic synchronization device 31 engages, and reversing-gear synchronizer 52 is separated, and forward gears synchronizer 56 accesses low regime clutch pair 54, and sun gear break 42 is separated; Engine portion sub-power is through hydraulic synchronization device 31, variable displacement pump 33 is reached from hydraulic pressure input gear pair 32, variable displacement pump 33 drives fixed displacement motor 34 through hydraulic tubing output flow, and fixed displacement motor 34 torque, through hydrostatic output gear pair 35, is passed to hydraulic transmission output shaft 36 and driven sun gear 44; Another part engine power is through mechanical transmission input gear pair 41, be delivered to gear ring 43, the machine power composition mixed power that the hydraulic power transmitted from sun gear 44 and gear ring 43 transmit is delivered to low regime clutch pair 54 through planet carrier 45, by forward gears synchronizer 56, exports finally by output shaft 2.
As shown in Figure 4, during the transmission of hydraulic machinery high tap position, hydraulic synchronization device 31 engages, and reversing-gear synchronizer 52 is separated, and forward gears synchronizer 56 accesses high-grade gear pair 53, and sun gear break 42 is separated; Engine portion sub-power is through hydraulic synchronization device 31, variable displacement pump 33 is reached from hydraulic pressure input gear pair 32, variable displacement pump 33 drives fixed displacement motor 34 through hydraulic tubing output flow, and fixed displacement motor 34 torque, through hydrostatic output gear pair 35, is passed to hydraulic transmission output shaft 36 and driven sun gear 44; Another part engine power is through mechanical transmission input gear pair 41, be delivered to gear ring 43, the machine power composition mixed power that the hydraulic power transmitted from sun gear 44 and gear ring 43 transmit is delivered to high-grade gear pair 53 through planet carrier 45, by forward gears synchronizer 56, exports finally by output shaft 2.
As shown in Figure 5, during hydraulic machinery reverse gear, reversing-gear synchronizer 52 and hydraulic synchronization device 31 engage simultaneously, and forward gears synchronizer 56 is separated with sun gear break 42; Engine portion sub-power is through hydraulic synchronization device 31, variable displacement pump 33 is reached from hydraulic pressure input gear pair 32, variable displacement pump 33 drives fixed displacement motor 34 through hydraulic tubing output flow, and fixed displacement motor 34 torque, through hydrostatic output gear pair 35, is passed to hydraulic transmission output shaft 36 and driven sun gear 44; Another part engine power is through mechanical transmission input gear pair 41, be delivered to gear ring 43, the machine power composition mixed power that the hydraulic power transmitted from sun gear 44 and gear ring 43 transmit is delivered to reversing-gear synchronizer 52 through planet carrier 45, is exported finally by output shaft 2 by reverse gear pair 55.
When tractor hauling operation, take mechanical drive mode, can transmission efficiency be promoted.
As shown in Figure 6, during pure mechanical low-grade location transmission, forward gears synchronizer 56 accesses low regime clutch pair 54, and sun gear break 42 engages, and reversing-gear synchronizer 52 is separated with hydraulic synchronization device 31; Engine power is delivered to gear ring 43 through mechanical transmission input gear pair 41, and sun gear 44 is fixed, and power, through planet carrier 45, is delivered to low regime clutch pair 54, is exported finally by output shaft 2 by forward gears synchronizer 56.
As shown in Figure 7, during pure mechanical high tap position transmission, forward gears synchronizer 56 accesses high-grade gear pair 53, and sun gear break 42 engages, and reversing-gear synchronizer 52 is separated with hydraulic synchronization device 31; Engine power is delivered to gear ring 43 through mechanical transmission input gear pair 41, and sun gear 44 is fixed, and power, through planet carrier 45, is delivered to high-grade gear pair 53, is exported by forward gears synchronizer 56 finally by output shaft 2.
As shown in Figure 8, during pure mechanical reverse transmission, reversing-gear synchronizer 52 and sun gear break 42 engage, and forward gears synchronizer 56 is separated with hydraulic synchronization device 31; Engine power is delivered to gear ring 43 through mechanical transmission input gear pair 41, and sun gear 44 is fixed, and power is delivered to reversing-gear synchronizer 52 through planet carrier 45, is exported finally by output shaft 2 by reverse gear pair 55.

Claims (8)

1. a hydraulic machinery dual-stream transmission gearbox, comprise input shaft (1), output shaft (2), fluid drive mechanism (3), planetary gears (4) and gearshift (5), it is characterized in that: described fluid drive mechanism (3) comprises hydraulic synchronization device (31), hydraulic transmission input gear pair (32), variable displacement pump (33), fixed displacement motor (34), hydraulic transmission output gear wheel set (35) and hydraulic transmission output shaft (36); Planetary gears (4) comprises mechanical transmission input gear pair (41), sun gear break (42), gear ring (43), sun gear (44) and planet carrier (45); Gearshift (5) comprises planet carrier output shaft (51), reversing-gear synchronizer (52), high-grade gear pair (53), low regime clutch pair (54), reverse gear pair (55) and forward gears synchronizer (56); Described fluid drive mechanism (3) is connected with input shaft (1) by hydraulic synchronization device (31), and hydraulic transmission output shaft (36) is connected with sun gear (44); The gear ring (43) of described planetary gears (4) is connected with input shaft (1) by mechanical transmission input gear pair (41); Described gearshift (5) is connected with the planet carrier (45) of planetary gears (4) by planet carrier output shaft (51); Described gearshift (5) is connected with output shaft (2) respectively by high-grade gear pair (53), low regime clutch pair (54), reverse gear pair (55).
2. hydraulic machinery dual-stream transmission gearbox according to claim 1, is characterized in that: during idling operation, and hydraulic synchronization device (31), reversing-gear synchronizer (52) are separated with forward gears synchronizer (56) simultaneously.
3. hydraulic machinery dual-stream transmission gearbox according to claim 1, it is characterized in that: during the transmission of hydraulic machinery low-grade location, hydraulic synchronization device (31) engages, reversing-gear synchronizer (52) is separated, forward gears synchronizer (56) access low regime clutch pair (54), sun gear break (42) is separated; Engine portion sub-power is through hydraulic synchronization device (31), variable displacement pump (33) is reached from hydraulic pressure input gear pair (32), variable displacement pump (33) drives fixed displacement motor (34) through hydraulic tubing output flow, fixed displacement motor (34) torque, through hydrostatic output gear pair (35), is passed to hydraulic transmission output shaft (36) and is driven sun gear (44); Another part engine power is through mechanical transmission input gear pair (41), be delivered to gear ring (43), the machine power composition mixed power that the hydraulic power transmitted from sun gear (44) and gear ring (43) transmit is delivered to low regime clutch pair (54) through planet carrier (45), by forward gears synchronizer (56), export finally by output shaft (2).
4. hydraulic machinery dual-stream transmission gearbox according to claim 1, it is characterized in that: during the transmission of hydraulic machinery high tap position, hydraulic synchronization device (31) engages, reversing-gear synchronizer (52) is separated, forward gears synchronizer (56) accesses high-grade gear pair (53), and sun gear break (42) is separated; Engine portion sub-power is through hydraulic synchronization device (31), variable displacement pump (33) is reached from hydraulic pressure input gear pair (32), variable displacement pump (33) drives fixed displacement motor (34) through hydraulic tubing output flow, fixed displacement motor (34) torque, through hydrostatic output gear pair (35), is passed to hydraulic transmission output shaft (36) and is driven sun gear (44); Another part engine power is through mechanical transmission input gear pair (41), be delivered to gear ring (43), the machine power composition mixed power that the hydraulic power transmitted from sun gear (44) and gear ring (43) transmit is delivered to high-grade gear pair (53) through planet carrier (45), by forward gears synchronizer (56), export finally by output shaft (2).
5. hydraulic machinery dual-stream transmission gearbox according to claim 1, it is characterized in that: during hydraulic machinery reverse gear, reversing-gear synchronizer (52) and hydraulic synchronization device (31) engage simultaneously, and forward gears synchronizer (56) is separated with sun gear break (42); Engine portion sub-power is through hydraulic synchronization device (31), variable displacement pump (33) is reached from hydraulic pressure input gear pair (32), variable displacement pump (33) drives fixed displacement motor (34) through hydraulic tubing output flow, fixed displacement motor (34) torque, through hydrostatic output gear pair (35), is passed to hydraulic transmission output shaft (36) and is driven sun gear (44); Another part engine power is through mechanical transmission input gear pair (41), be delivered to gear ring (43), the machine power composition mixed power that the hydraulic power transmitted from sun gear (44) and gear ring (43) transmit is delivered to reversing-gear synchronizer (52) through planet carrier (45), is exported finally by output shaft (2) by reverse gear pair (55).
6. hydraulic machinery dual-stream transmission gearbox according to claim 1, it is characterized in that: during pure mechanical low-grade location transmission, forward gears synchronizer (56) access low regime clutch pair (54), sun gear break (42) engages, and reversing-gear synchronizer (52) is separated with hydraulic synchronization device (31); Engine power is delivered to gear ring (43) through mechanical transmission input gear pair (41), and sun gear (44) is fixed, and power, through planet carrier (45), is delivered to low regime clutch pair (54), is exported finally by output shaft (2) by forward gears synchronizer (56).
7. hydraulic machinery dual-stream transmission gearbox according to claim 1, it is characterized in that: during pure mechanical high tap position transmission, forward gears synchronizer (56) accesses high-grade gear pair (53), sun gear break (42) engages, and reversing-gear synchronizer (52) is separated with hydraulic synchronization device (31); Engine power is delivered to gear ring (43) through mechanical transmission input gear pair (41), and sun gear (44) is fixed, and power, through planet carrier (45), is delivered to high-grade gear pair (53), is exported finally by output shaft (2) by forward gears synchronizer (56).
8. hydraulic machinery dual-stream transmission gearbox according to claim 1, it is characterized in that: during pure mechanical reverse transmission, reversing-gear synchronizer (52) and sun gear break (42) engage, and forward gears synchronizer (56) is separated with hydraulic synchronization device (31); Engine power is delivered to gear ring (43) through mechanical transmission input gear pair (41), and sun gear (44) is fixed, and power is delivered to reversing-gear synchronizer (52) through planet carrier (45), is exported finally by output shaft (2) by reverse gear pair (55).
CN201410429983.0A 2014-08-28 2014-08-28 Hydraulic mechanical dual-power flow transmission gearbox Pending CN104329434A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107044514A (en) * 2017-03-17 2017-08-15 南京泓凯动力系统科技有限公司 A kind of hybrid variable-speed transmission device
CN108317227A (en) * 2018-04-08 2018-07-24 昆山德拉特兰传动科技有限公司 Two speed transmissions
CN109058403A (en) * 2018-08-06 2018-12-21 陕西法士特齿轮有限责任公司 A kind of power-diversion stepiess variable drive system
CN112377593A (en) * 2020-11-16 2021-02-19 重庆大学 Double-stage planetary gear return flow type hydraulic mechanical stepless transmission system
CN113124127A (en) * 2021-04-20 2021-07-16 中国石油大学(华东) Multi-mode hydraulic mechanical stepless speed change device for grain harvester
RU216848U1 (en) * 2022-12-08 2023-03-03 Публичное акционерное общество "КАМАЗ" Vehicle with dual transmission

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WO2014095317A1 (en) * 2012-12-17 2014-06-26 Linde Hydraulics Gmbh & Co. Kg Power-split gearbox with different operating states
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CN1495062A (en) * 2002-07-18 2004-05-12 ɳ��-����˿�ɷ����޹�˾ Mechanical hydraulic speed variator electronic control system for high speed car
CN101321642A (en) * 2006-03-13 2008-12-10 博世力士乐股份有限公司 Mechanico-hydraulic drive comprising a power split transmission
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107044514A (en) * 2017-03-17 2017-08-15 南京泓凯动力系统科技有限公司 A kind of hybrid variable-speed transmission device
CN108317227A (en) * 2018-04-08 2018-07-24 昆山德拉特兰传动科技有限公司 Two speed transmissions
CN108317227B (en) * 2018-04-08 2024-04-12 昆山德拉特兰传动科技有限公司 Two-speed transmission
CN109058403A (en) * 2018-08-06 2018-12-21 陕西法士特齿轮有限责任公司 A kind of power-diversion stepiess variable drive system
CN109058403B (en) * 2018-08-06 2024-01-02 陕西法士特齿轮有限责任公司 Power split stepless speed change transmission system
CN112377593A (en) * 2020-11-16 2021-02-19 重庆大学 Double-stage planetary gear return flow type hydraulic mechanical stepless transmission system
CN113124127A (en) * 2021-04-20 2021-07-16 中国石油大学(华东) Multi-mode hydraulic mechanical stepless speed change device for grain harvester
CN113124127B (en) * 2021-04-20 2022-05-24 中国石油大学(华东) Multi-mode hydraulic mechanical stepless speed change device for grain harvester
RU216848U1 (en) * 2022-12-08 2023-03-03 Публичное акционерное общество "КАМАЗ" Vehicle with dual transmission

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