• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A work vehicle having an oil cooling path through which a working oil within the transmission housing for the hydraulically driven transmission means is circulated to the transmission case through the cooler. There is disposed a bypass adapted to return the working oil directly to the transmission case from said transmission housing without passing through the cooler when the pressure in said transmission housing exceeds a predetermined value.
    公开号:SU1077560A3
    申请号:SU802897651
    申请日:1980-03-07
    公开日:1984-02-29
    发明作者:Бандо Ниро；Мията Дзундзи；Тоне Масацугу；Ватанабе Харуо
    申请人:Кубота,Лтд (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to a transport engineering, more specifically to self-propelled vehicles with hydraulic transmission. A self-propelled vehicle containing a motor connected by a hydraulic transmission with a mechanic transmission is known, a hydraulic pump for pumping working fluid from the mechanical transmission housing to a hydraulic transmission case, a cooling circuit including a cooler, a supply line connecting the hydraulic transmission case to the cooler, and a return pipeline A common partition Y is formed between the cooler and the mechanical transmission housing, with the rigidly connected adjacent stacks of the crankcase and the housing being formed. The disadvantage of the known vehicle is a significant increase in the working pressure of the network in the hydrotransfer casing, especially when operating in cold climates. Correcting this deficiency by using larger pipelines leads to an increase in the size of the vehicle. The purpose of the invention is to increase the compactness of the vehicle. This goal is achieved by the fact that a self-propelled vehicle comprising an engine connected by a hydraulic transmission with a mechanical transmission, a hydraulic pump for pumping working fluid from the mechanical transmission housing to the hydraulic transmission case, a cooling circuit including a cooler, a supply pipeline connecting the hydraulic transmission case to the cooler , and the return pipe connecting the cooler to the mechanical transmission housing, with the rigidly connected adjacent walls of the crankcase and the housing being formed a partition disposed parallel to the contour provided with a cooling duct with a relief valve built therein, a controlled pressure in the crankcase, wherein the pipe is made in common partition. Moreover, the bypass valve is fixed to the connecting wall of the crankcase. In addition, the bypass valve is fixed to the wall of the housing. FIG. 1 shows the scheme of the self-propelled vehicle; in fig. 2 - diagram of the hydraulic system of the main nodes; in fig. 3 - main units, section; in fig. 4 and 5 - the main components of the machine options. In the vehicle, crankcase 1 of continuously variable hydraulic transmission 2 is associated with a power plant 3 containing engine 4 and radiator 5 and is located between it and the transmission housing 6, which serves to drive the front 7 and rear 8 wheels and to drive the working parts of the machine. A cooler 9 for cooling the working fluid is located in the lower part of the radiator 5 on the air inlet side. The pipeline 10 for supplying the working fluid and the pipeline 11 for returning the cooled working fluid together constitute the oil cooling path 12, through which the working fluid from the hydraulic transmission case 1 flows into the transmission housing through cooling: spruce 9. Continuous hydraulic transmission 2 (Fig. 2) contains a variable-capacity hydraulic pump 13 driven by an engine 4 and capable of varying the flow rate in accordance with a change in the angle of rotation of the inclined plate; a constant-capacity hydraulic motor 14 for a step-change in speed the machine moves forward and backward in accordance with the change in the flow rate of the working fluid supplied by the hydraulic pump 13, the hydraulic pump 15 of constant capacity to maintain a constant flow of the working fluid, filter 16, check valves 17 and safety valve 18. Additional pipe 19 is provided in connecting walls 20 and 21 separating the transmission housing 6 from the crankcase 1 of the continuously variable hydraulic transmission 2, and passes through the said bulkheads 20 and 21 in the direction of the longitudinal axis of the machine. Pipeline 19 contains a bypass valve 22, designed to return the working fluid from the crankcase 1 hydraulic transmission directly into the housing 6 of the transmission, mine cooler 9, when the pressure in the crankcase 1 hydraulic transmission exceeds a predetermined value. The overflow valve 22 (FIG. 3) consists of a main bushing 23 screwed into the partition 21 of the transmission housing 6, a chamber 24 formed in the main bushing 23 and adapted for communication with the pipeline 19, a ball 25 located in the chamber 24 and intended to close the pipeline 19. The valve 22 also includes a threaded part 26, is screwed into the open part of the chamber 24 and a spring placed between the ball 25 and the threaded part 26 and intended for normal. springing the ball 25 in the direction of the pipeline 19. In the embodiment (FIG. 4), the pipeline 19 is formed by oil channels 27 and 28, made in the drain plugs 29 and 30, which are screwed into the bottom walls of the hydraulic transmission housing 1 and the transmission housing 6.
    权利要求:
    Claims (3)
    [1]
    U SELF-PROPELLED VEHICLE, containing an engine connected to a hydraulic transmission with a mechanical transmission, a hydraulic pump for pumping the working fluid from the mechanical transmission housing to the hydraulic transmission housing, a cooling circuit that includes a cooler, a supply pipe connecting the hydraulic transmission case to the cooler, and a return pipe connecting a cooler with a mechanical transmission casing, while rigidly connected adjacent walls of the crankcase and casing, a common partition is formed, characterized in that, with pour more compact, it is provided with a cooling circuit disposed in parallel with the pipeline bypass valve built into it, controlled pressure in the crankcase, wherein the pipe is made in common partition.
    [2]
    2. Vehicle according to π. 1, characterized in that the bypass valve is mounted on the connecting wall of the crankcase.
    [3]
    3. The vehicle according to claim 1, characterized in that the bypass valve is mounted on the wall of the housing.
    1077560 A
    类似技术:
    公开号 | 公开日 | 专利标题
    US7320577B1|2008-01-22|Dual pump transmission
    US5311740A|1994-05-17|Hydraulic power transmission
    US2370526A|1945-02-27|Hydraulic torque transmission arrangement
    US5215164A|1993-06-01|Lubricating device for four stroke outboard motor
    US5056601A|1991-10-15|Air compressor cooling system
    JP4499689B2|2010-07-07|Continuously variable transmission
    US8635867B2|2014-01-28|Hydrostatic transmission
    US4352455A|1982-10-05|Arrangement for heating the service cabin of a machine driven by an internal combustion engine
    US20060090639A1|2006-05-04|Hydraulic piston pump unit with integral fluid reservoir
    US732908A|1903-07-07|Driving mechanism for automobiles.
    SU1077560A3|1984-02-29|Self-propelled vehicle
    US4204811A|1980-05-27|Fluid pumping system
    US3143858A|1964-08-11|Hydrostatic transmission
    FR2492327A1|1982-04-23|HEATING INSTALLATION, IN PARTICULAR FOR A SERVICE CAB, A VEHICLE CAB OR THE LIKE
    US3042146A|1962-07-03|Lubrication of a marine propulsion device
    JP4381794B2|2009-12-09|Engine lubrication equipment
    US1126812A|1915-02-02|Driving mechanism.
    SU1061694A3|1983-12-15|Hydraulic system of vehicle
    US4480962A|1984-11-06|Pump with inlet passages downstream and through its flow control valve
    JP4638770B2|2011-02-23|Charge structure of hydrostatic continuously variable transmission
    US3591965A|1971-07-13|Hydrodrive
    US3057434A|1962-10-09|Gear pump and sump for engine lubrication system
    SE512217C2|2000-02-14|Two stage compressor and method for cooling the same
    SU1743931A1|1992-06-30|Device for cooling hydraulic and mechanical transmission and hydraulic retarder of transportation vehicle
    US2565203A|1951-08-21|Rotary fluid coupling housing and oil drain system
    同族专利:
    公开号 | 公开日
    GB2047854B|1983-03-16|
    BE882125A|1980-07-01|
    JPS55129833U|1980-09-13|
    IT1130298B|1986-06-11|
    JPS6132818Y2|1986-09-25|
    GB2047854A|1980-12-03|
    DE3008869C2|1987-02-26|
    FR2450720A1|1980-10-03|
    CA1143303A|1983-03-22|
    IT8020365D0|1980-03-05|
    FR2450720B1|1986-12-12|
    DE3008869A1|1980-09-18|
    US4323137A|1982-04-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2419059A|1940-07-16|1947-04-15|Villiers Charente Pierre Re De|Apparatus for the hydraulic transmission of power|
    US2323994A|1940-11-04|1943-07-13|Young Radiator Co|Oil cooler|
    US2331378A|1940-12-18|1943-10-12|Reuben G Dykeman|Oil temperature regulator|
    US2392214A|1942-12-26|1946-01-01|United Aircraft Prod|By-pass control valve|
    US2903244A|1955-04-07|1959-09-08|Rolls Royce|Oil coolers for engines|
    GB1205950A|1967-10-10|1970-09-23|Int Harvester Co|Hydrostatic transmission dual pressure charge-servo system|
    US3780820A|1971-04-23|1973-12-25|Hyster Co|Hydrostatic auxiliary wheel motor assist drive system for vehicles|
    US3885388A|1974-02-13|1975-05-27|Sundstrand Corp|Control for a hydrostatic transmission|
    US3989117A|1975-04-14|1976-11-02|Hill Bernard E|Hydraulic drive system for a work vehicle or tractor|
    US3964262A|1975-06-10|1976-06-22|Clark Equipment Company|Hydrostatic transmission control system|
    US4132283A|1976-08-08|1979-01-02|Mccurry Jere L|System to supplement engine power|
    DE2652976A1|1976-11-22|1978-05-24|Linde Ag|Torque control for automatic transmission - has fixed ratio gear box and hydrostatic train to extend ratio range|JPS633851Y2|1982-11-25|1988-01-30|
    FR2589401A1|1985-10-31|1987-05-07|Dion Biro Guy|Hydrodynamic transmission system chiefly suitable for driving of water pumps for fire engines|
    DE4424315C2|1994-07-09|2000-10-26|Orenstein & Koppel Ag|Method and device for cooling at least one traction pump and / or at least one traction motor of a hydrostatic traction drive|
    SE509903C2|1998-02-27|1999-03-22|Volvo Wheel Loaders Ab|Cooling and heating systems|
    DE19909994A1|1999-03-06|2000-09-07|Zahnradfabrik Friedrichshafen|Hydraulic drive|
    DE102010047194A1|2010-09-30|2012-04-05|Robert Bosch Gmbh|Hydrostatic drive|
    CN104015678B|2014-06-23|2016-04-06|中国重汽集团大同齿轮有限公司|Heavy-duty automotive speed changer oil cooler pipeline closing appliance|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP3069479U|JPS6132818Y2|1979-03-09|1979-03-09|
    [返回顶部]