CN105564227A - Sandwich mechanical hydraulic compound transmission case, and road maintenance truck power control method - Google Patents
Sandwich mechanical hydraulic compound transmission case, and road maintenance truck power control method Download PDFInfo
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- CN105564227A CN105564227A CN201410554662.3A CN201410554662A CN105564227A CN 105564227 A CN105564227 A CN 105564227A CN 201410554662 A CN201410554662 A CN 201410554662A CN 105564227 A CN105564227 A CN 105564227A
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Abstract
Provided are a sandwich mechanical hydraulic compound transmission case, and a road maintenance truck power control method. The transmission case is installed between an engine flywheel casing and a gearbox. The transmission case comprises a motor wheel, a pump impeller, a gear transmission mechanism, a force taking mechanism, a control structure, and a joint mechanism. In a transport mode, power of the engine enters the transmission case through a flywheel and a front clutch. An input shaft and an output shaft are rigidly connected through an output control mechanism. Then, the power reaches a rear axle through a rear clutch, and is normally transported. In a low-speed work mode, the power of the engine enters the input shaft of the transmission case through the flywheel and the front clutch, and drives a hydraulic pump through gear drive, the hydraulic pump drives a hydraulic motor through a hydraulic circuit and controls displacement of the hydraulic pump, so as to change output rotating speed of a vehicle. The hydraulic motor provides enough power and chassis running speed for a working device, so that speed and stability satisfy travelling work working condition requirements, and 1 km/h low speed heavy load and long-term work is realized.
Description
Technical field
The invention belongs to road upkeep vehicle field, especially for the vehicle of operation simultaneously under rapid transit and low-speed heave-load operation two kinds of operating modes.
Background technology
At present, China's self-produced road upkeep vehicle power resources mainly contain power takeoff and two kinds, the second driving engine.Power taking mode power takeoff power-assisted, travels in operation process at vehicle, and the rotating speed of driving engine directly can have influence on the work output of power takeoff, causes the mode of operation of power takeoff relatively unstable, brings very big hidden danger to follow-up work, cause shorten service life.Adopt the second engine torque extraction, the curb mass of vehicle can be increased, and in the process of moving, can fuel oil consumption be increased, also have that noise is large, discharge is large and the shortcoming of contaminated environment simultaneously.
Last century Mo, German Ao Muxi drive technology Co., Ltd (OMSITransmission) and French ripple Crane hydrostatic drive (PoclainHydraulics) Co., Ltd are proposed a kind of off-axis power taking product respectively.The mechanical-hydraulic Composite Transmission case of Germany Ao Muxi drive technology Co., Ltd research and development can make engineering truck possess mechanical drive and hydrostatic drive two kinds of type of drive simultaneously, both meet special vehicle low speed job stabilization, provide reliable Power output to equipment simultaneously.But have the following disadvantages: 1. underuse former change speed gear box reverse gear function, adopt two way variable displacement pump, cost is high.2. the input speed of controllable capacity pump limits by gearbox-gear, and engine power is underused, and oil consumption is high.3. walk the speed of operation, job load, driving engine running state can not overall-in-one control schema, engine operating state is unstable, low-speed stability is poor and scope is little, overall efficiency is low.
Patent of invention content
For above one or more technical matters, provide a kind of sandwich mechanical-hydraulic Composite Transmission case, road-maintaining truck power-control method, transmission gearbox is installed between flywheel shell of engine and change speed gear box by it.The present invention by adopting conventional heavy-duty vehicle chassis for running at high speed, additional hydraulic driving device is for the scheme of low speed operation, meet the demand of rapid transit and these two kinds of operating modes of low-speed heave-load operation well, solve running velocity difference large and under operating condition, during vehicle load real-time change, the speed of a motor vehicle need keep stable problem.
Transmission principle figure is shown in accompanying drawing 1.Under Transportation Model, the power of driving engine, through flywheel, front clutch, enters transmission gearbox, and now transmission gearbox input shaft 2 is rigidly connected by exporting steering unit 15 with output shaft 13.Then power is through power-transfer clutch, change speed gear box, transmission shaft, arrival back axle later, to realize automobile normal transport operating mode.
Under low speed work pattern, the power of driving engine, through flywheel, front clutch, enter transmission gearbox input shaft 2, then drive Hydraulic Pump by gear transmission, Hydraulic Pump drives HM Hydraulic Motor by hydraulic circuit, and hydraulic control pump capacity can change vehicle output speed.There is provided enough power and chassis moving velocity by HM Hydraulic Motor for apparatus for work, make speed and stability meet walking working condition demand, realize 1Km/h low speed, heavily loaded long working.
A kind of sandwich mechanical-hydraulic Composite Transmission case, comprise casing, case lid, input shaft gear 1, input shaft 2, pump impeller 6, pump impeller shaft 7, pump impeller steering unit 8, motor wheel 9, motor drive shaft 10, motor wheel steering unit 11, output shaft 13, output gear 14, export steering unit 15, power taking axle 16, power taking steering unit 17, power take-off gear 18, transmission gearbox is installed between flywheel shell of engine and change speed gear box, particularly:
Input shaft, output shaft end are sheathed to be fixed in bearing (3,12), and input shaft gear is set on input shaft, and input shaft is coaxial with output shaft, and input shaft is connected with output shaft by exporting steering unit or disconnects;
Input shaft gear is connected by engaging gear with pump impeller, and the folding that pump steering unit controls engaging gear realizes the transmission disconnection of this position or is in transmission connection, and pump impeller is set on pump impeller shaft, pump impeller shaft connecting fluid press pump;
Motor wheel is connected by engaging gear with output shaft gear, the folding that motor steering unit controls engaging gear realizes the transmission disconnection of this position or is in transmission connection, motor wheel is on the motor sheathed, motor drive shaft connecting fluid pressure motor, Hydraulic Pump drives HM Hydraulic Motor by hydraulic circuit, and HM Hydraulic Motor outputting power is to motor drive shaft;
Power taking axle is fixed, and power take-off gear is set on power taking axle, and power take-off gear is connected by engaging gear with input shaft gear, and power taking steering unit is located on power taking axle and the transmission that the folding controlling engaging gear realizes this position disconnects or is in transmission connection.
Further, according to the distance between flywheel shell of engine and speed change box clutch shell external diameter, idler mechanism is increased between input shaft gear and the connection of pump impeller, idler mechanism: idler shaft is fixed, idle pulley (4) is set on idler shaft (5), and idle pulley realizes engaged transmission between input shaft gear and pump impeller.
Further, described engaging gear is sliding hub.
Further, described output, pump impeller, motor steering unit are three shift shaft structures, shift shaft connects cylinder projecting shaft, and electromagnetic valve connects cylinder, and control cylinder power break-make is with connection of shifting gears, control setup connected electromagnetic valve, shifting element adopts synchro, and shift shaft connects sliding hub, to realize engaging or disconnecting.
Further, Hydraulic Pump adopts Variable plunger pump, and motor adopts unidirectional fixed displacement motor.
Further, idler shaft is cantilever beam structure.
Further, transmission gearbox adopts positive lubrication and lubrication by atomization fit system, and lubricating pump selects gear-within-gear pump, is arranged on idler shaft.
A kind of chassis of heavy-duty vehicle device, adopt above-mentioned sandwich mechanical-hydraulic Composite Transmission case, transmission gearbox and driving engine, change speed gear box assemble as dynamic assembly.
A kind of road-maintaining truck power-control method, adopt above-mentioned sandwich mechanical-hydraulic Composite Transmission case, under Transportation Model, the power of driving engine, through flywheel, front clutch, enter transmission gearbox, now transmission gearbox input shaft and output shaft are rigidly connected by exporting steering unit, then power is through power-transfer clutch, change speed gear box, transmission shaft, arrival back axle later, to realize automobile normal transport operating mode; Under low speed work pattern, the power of driving engine, through flywheel, front clutch, enter transmission gearbox input shaft, then drive Hydraulic Pump by gear transmission, Hydraulic Pump drives HM Hydraulic Motor by hydraulic circuit, and hydraulic control pump capacity can change vehicle output speed.
Further, when work pattern and Transportation Model exchange, Hydraulic Pump, HM Hydraulic Motor and the power of output shaft need constantly to engage, disconnect, first vehicle power pattern is judged, then its sequence of operation is: during Transportation Model, hydraulic pump drive power disconnects, and then fluid motor-driven power disconnects, and outputting axial power disconnects; During work pattern, hydraulic pump drive power combines, and then fluid motor-driven power combines, and then outputting axial power disconnects.
Accompanying drawing explanation
Fig. 1 sandwich mechanical-hydraulic of the present invention Composite Transmission case inner structure schematic diagram;
The powershift table of Fig. 2 road-maintaining truck power-control method of the present invention;
The schematic flow sheet of Fig. 3 road-maintaining truck power-control method of the present invention;
Fig. 4 sandwich mechanical-hydraulic of the present invention Composite Transmission case schematic perspective view;
Fig. 5 sandwich mechanical-hydraulic of the present invention Composite Transmission case other direction schematic perspective view.
Detailed description of the invention
Now by reference to the accompanying drawings the present invention is described further:
As shown in Figure 1: 1. input shaft gear, 2. input shaft, 3. bearing, 4. idle pulley, 5. idler shaft, 6. pump impeller, 7. pump impeller shaft, 8. pump impeller steering unit, 9. motor wheel, 10. motor drive shaft, 11. motor wheel steering units, 12. bearings, 13. output shafts, 14. output gears, 15. export steering unit, 16. power taking axles, 17. power taking steering units, 18. power take-off gears.
The present invention also can comprise following content: casing, case lid; Gear drive; Lubricating structure; Steering unit; Hydraulic Pump, HM Hydraulic Motor and loop thereof; Clutch case; Clutch bell; Spy on the annexes such as port lid, breather stem vent plug, suspension ring, oil is stifled.
When work pattern and Transportation Model exchange, Hydraulic Pump, HM Hydraulic Motor and the power of output shaft need constantly to engage, disconnect.Its sequence of operation is as shown in accompanying drawing 2, Fig. 3.
The present invention adopts three shifting shafts to be controlled respectively by different shifting cylinder power break-make situation respectively, and shifting element adopts and switches pulsation-free synchro.
Transmission gearbox adopts positive lubrication and lubrication by atomization fit system.Lubricating pump selects gear-within-gear pump, is arranged on idler shaft.
Hydraulic efficiency pressure system adopts Variable plunger pump and unidirectional fixed displacement motor.
The present invention with driving engine, change speed gear box as dynamic assembly, can be carried at chassis of heavy-duty vehicle.
Sandwich mechanical-hydraulic Composite Transmission case comprises casing, case lid, input shaft gear 1, input shaft 2, pump impeller 6, pump impeller shaft 7, pump impeller steering unit 8, motor wheel 9, motor drive shaft 10, motor wheel steering unit 11, output shaft 13, output gear 14, export steering unit 15, power taking axle 16, power taking steering unit 17, power take-off gear 18, transmission gearbox is installed between flywheel shell of engine and change speed gear box, input shaft, output shaft end is sheathed is fixed on bearing (3, 12) in, input shaft gear is set on input shaft, input shaft is coaxial with output shaft, input shaft is connected with output shaft by exporting steering unit or disconnects, input shaft gear is connected by engaging gear with pump impeller, and the folding that pump steering unit controls engaging gear realizes the transmission disconnection of this position or is in transmission connection, and pump impeller is set on pump impeller shaft, pump impeller shaft connecting fluid press pump, motor wheel is connected by engaging gear with output shaft gear, the folding that motor steering unit controls engaging gear realizes the transmission disconnection of this position or is in transmission connection, motor wheel is on the motor sheathed, motor drive shaft connecting fluid pressure motor, Hydraulic Pump drives HM Hydraulic Motor by hydraulic circuit, and HM Hydraulic Motor outputting power is to motor drive shaft, power taking axle is fixed, and power take-off gear is set on power taking axle, and power take-off gear is connected by engaging gear with input shaft gear, and power taking steering unit is located on power taking axle and the transmission that the folding controlling engaging gear realizes this position disconnects or is in transmission connection.
Because flywheel shell of engine and speed change box clutch shell external diameter are comparatively large, so increase by one group of idle wheel.Inertia wheel shaft adopts cantilever beam structure.Idler shaft is fixed, and idle pulley 4 is set on idler shaft 5, and idle pulley realizes engaged transmission between input shaft gear and pump impeller.Engaging gear is sliding hub.Output, pump impeller, motor steering unit are three shift shaft structures, and shift shaft connects cylinder projecting shaft, and electromagnetic valve connects cylinder, control cylinder power break-make with connection of shifting gears, control setup connected electromagnetic valve, shifting element adopt synchro, shift shaft connects sliding hub, to realize engaging or disconnecting.Hydraulic Pump adopts Variable plunger pump, and motor adopts unidirectional fixed displacement motor.Transmission gearbox adopts positive lubrication and lubrication by atomization fit system, and lubricating pump selects gear-within-gear pump, is arranged on idler shaft.
Chassis of heavy-duty vehicle device, adopt above-mentioned sandwich mechanical-hydraulic Composite Transmission case, transmission gearbox and driving engine, change speed gear box assemble as dynamic assembly.
Road-maintaining truck power-control method, adopt above-mentioned sandwich mechanical-hydraulic Composite Transmission case, under Transportation Model, the power of driving engine, through flywheel, front clutch, enter transmission gearbox, now transmission gearbox input shaft and output shaft are rigidly connected by exporting steering unit, then power is through power-transfer clutch, change speed gear box, transmission shaft, arrival back axle later, to realize automobile normal transport operating mode; Under low speed work pattern, the power of driving engine, through flywheel, front clutch, enter transmission gearbox input shaft, then drive Hydraulic Pump by gear transmission, Hydraulic Pump drives HM Hydraulic Motor by hydraulic circuit, and hydraulic control pump capacity can change vehicle output speed.When work pattern and Transportation Model exchange, Hydraulic Pump, HM Hydraulic Motor and the power of output shaft need constantly to engage, disconnect, first vehicle power pattern is judged, then its sequence of operation is: during Transportation Model, hydraulic pump drive power disconnects, then fluid motor-driven power disconnects, and outputting axial power disconnects; During work pattern, hydraulic pump drive power combines, and then fluid motor-driven power combines, and then outputting axial power disconnects.
Transmission principle figure is shown in accompanying drawing 1.Under Transportation Model, the power of driving engine, through flywheel, front clutch, enters transmission gearbox, and now transmission gearbox input shaft 2 is rigidly connected by exporting steering unit 15 with output shaft 13.Then power is through power-transfer clutch, change speed gear box, transmission shaft, arrival back axle later, to realize automobile normal transport operating mode.
Under low speed work pattern, the power of driving engine, through flywheel, front clutch, enter transmission gearbox input shaft 2, then drive Hydraulic Pump by gear transmission, Hydraulic Pump drives HM Hydraulic Motor by hydraulic circuit, and hydraulic control pump capacity can change vehicle output speed.There is provided enough power and chassis moving velocity by HM Hydraulic Motor for apparatus for work, make speed and stability meet walking working condition demand, realize 1Km/h low speed, heavily loaded long working.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme is not intended to limit; Although be described in detail with reference to preferred embodiment; those of ordinary skill in the field are to be understood that: still can modify to detailed description of the invention or carry out equivalent replacement to portion of techniques feature and do not depart from the spirit of scheme, it all should be encompassed in the middle of the technical scheme scope of this case request protection.
Claims (10)
1. a sandwich mechanical-hydraulic Composite Transmission case, comprise casing, case lid, input shaft gear (1), input shaft (2), pump impeller (6), pump impeller shaft (7), pump impeller steering unit (8), motor wheel (9), motor drive shaft (10), motor wheel steering unit (11), output shaft (13), output gear (14), export steering unit (15), power taking axle (16), power taking steering unit (17), power take-off gear (18), transmission gearbox is installed between flywheel shell of engine and change speed gear box, particularly:
Input shaft, output shaft end are sheathed to be fixed in bearing (3,12), and input shaft gear is set on input shaft, and input shaft is coaxial with output shaft, and input shaft is connected with output shaft by exporting steering unit or disconnects;
Input shaft gear is connected by engaging gear with pump impeller, and the folding that pump steering unit controls engaging gear realizes the transmission disconnection of this position or is in transmission connection, and pump impeller is set on pump impeller shaft, pump impeller shaft connecting fluid press pump;
Motor wheel is connected by engaging gear with output shaft gear, the folding that motor steering unit controls engaging gear realizes the transmission disconnection of this position or is in transmission connection, motor wheel is on the motor sheathed, motor drive shaft connecting fluid pressure motor, Hydraulic Pump drives HM Hydraulic Motor by hydraulic circuit, and HM Hydraulic Motor outputting power is to motor drive shaft;
Power taking axle is fixed, and power take-off gear is set on power taking axle, and power take-off gear is connected by engaging gear with input shaft gear, and power taking steering unit is located on power taking axle and the transmission that the folding controlling engaging gear realizes this position disconnects or is in transmission connection.
2. sandwich mechanical-hydraulic Composite Transmission case according to claim 1, it is characterized in that, according to the distance between flywheel shell of engine and speed change box clutch shell external diameter, idler mechanism is increased between input shaft gear and the connection of pump impeller, idler mechanism: idler shaft is fixed, idle pulley (4) is set on idler shaft (5), and idle pulley realizes engaged transmission between input shaft gear and pump impeller.
3. sandwich mechanical-hydraulic Composite Transmission case according to claim 2, it is characterized in that, described engaging gear is sliding hub.
4. sandwich mechanical-hydraulic Composite Transmission case according to claim 3, it is characterized in that, described output, pump impeller, motor steering unit are three shift shaft structures, shift shaft connects cylinder projecting shaft, and electromagnetic valve connects cylinder, and control cylinder power break-make is with connection of shifting gears, control setup connected electromagnetic valve, shifting element adopts synchro, and shift shaft connects sliding hub, to realize engaging or disconnecting.
5. sandwich mechanical-hydraulic Composite Transmission case according to claim 4, is characterized in that, Hydraulic Pump adopts Variable plunger pump, and motor adopts unidirectional fixed displacement motor.
6. sandwich mechanical-hydraulic Composite Transmission case according to claim 5, it is characterized in that, idler shaft is cantilever beam structure.
7. according to any one the sandwich mechanical-hydraulic Composite Transmission case described in claim 2 to 6, it is characterized in that, transmission gearbox adopts positive lubrication and lubrication by atomization fit system, and lubricating pump selects gear-within-gear pump, is arranged on idler shaft.
8. a chassis of heavy-duty vehicle device, is characterized in that, adopt any one the sandwich mechanical-hydraulic Composite Transmission case described in the claims 1 to 7, transmission gearbox and driving engine, change speed gear box assemble as dynamic assembly.
9. a road-maintaining truck power-control method, it is characterized in that, adopt any one the sandwich mechanical-hydraulic Composite Transmission case described in the claims 1 to 7, under Transportation Model, the power of driving engine, through flywheel, front clutch, enter transmission gearbox, now transmission gearbox input shaft and output shaft are rigidly connected by exporting steering unit, and then power is through power-transfer clutch, change speed gear box, transmission shaft, arrival back axle later, to realize automobile normal transport operating mode; Under low speed work pattern, the power of driving engine, through flywheel, front clutch, enter transmission gearbox input shaft, then drive Hydraulic Pump by gear transmission, Hydraulic Pump drives HM Hydraulic Motor by hydraulic circuit, and hydraulic control pump capacity can change vehicle output speed.
10. road-maintaining truck power-control method according to claim 9, it is characterized in that, when work pattern and Transportation Model exchange, Hydraulic Pump, HM Hydraulic Motor and the power of output shaft need constantly to engage, disconnect, first judge vehicle power pattern, then its sequence of operation is: during Transportation Model, and hydraulic pump drive power disconnects, then fluid motor-driven power disconnects, and outputting axial power disconnects; During work pattern, hydraulic pump drive power combines, and then fluid motor-driven power combines, and then outputting axial power disconnects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410554662.3A CN105564227B (en) | 2014-10-17 | 2014-10-17 | Sandwich mechanical-hydraulic Composite Transmission case, road-maintaining truck power-control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410554662.3A CN105564227B (en) | 2014-10-17 | 2014-10-17 | Sandwich mechanical-hydraulic Composite Transmission case, road-maintaining truck power-control method |
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| CN105564227A true CN105564227A (en) | 2016-05-11 |
| CN105564227B CN105564227B (en) | 2019-03-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857065A (en) * | 2016-05-16 | 2016-08-17 | 福建龙马环卫装备股份有限公司 | Mechanical-hydraulic dual-mode drive high-pressure washing vehicle |
| CN106240361A (en) * | 2016-10-04 | 2016-12-21 | 长沙悠力传动有限公司 | A kind of vehicle using manual impulsator regulation speed and control method |
| CN107599832A (en) * | 2017-10-18 | 2018-01-19 | 北京北方车辆集团有限公司 | A kind of more power output structures for rushing to repair equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1721222A (en) * | 2004-08-06 | 2006-01-18 | 赵宏坚 | Special-purpose automobile chassis |
| US20090227410A1 (en) * | 2007-06-11 | 2009-09-10 | Zhao Hongjian | Mechanical and hydraulic composite transmission device |
| CN102606707A (en) * | 2011-12-13 | 2012-07-25 | 赵国贵 | Mechanical hydraulic compound drive gearbox |
| CN103847517A (en) * | 2014-03-04 | 2014-06-11 | 中国重汽集团湖北华威专用汽车有限公司 | Special vehicle for transmission of mechanical-hydraulic composite transfer case |
-
2014
- 2014-10-17 CN CN201410554662.3A patent/CN105564227B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1721222A (en) * | 2004-08-06 | 2006-01-18 | 赵宏坚 | Special-purpose automobile chassis |
| US20090227410A1 (en) * | 2007-06-11 | 2009-09-10 | Zhao Hongjian | Mechanical and hydraulic composite transmission device |
| CN102606707A (en) * | 2011-12-13 | 2012-07-25 | 赵国贵 | Mechanical hydraulic compound drive gearbox |
| CN103847517A (en) * | 2014-03-04 | 2014-06-11 | 中国重汽集团湖北华威专用汽车有限公司 | Special vehicle for transmission of mechanical-hydraulic composite transfer case |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857065A (en) * | 2016-05-16 | 2016-08-17 | 福建龙马环卫装备股份有限公司 | Mechanical-hydraulic dual-mode drive high-pressure washing vehicle |
| CN106240361A (en) * | 2016-10-04 | 2016-12-21 | 长沙悠力传动有限公司 | A kind of vehicle using manual impulsator regulation speed and control method |
| CN107599832A (en) * | 2017-10-18 | 2018-01-19 | 北京北方车辆集团有限公司 | A kind of more power output structures for rushing to repair equipment |
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| Publication number | Publication date |
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| CN105564227B (en) | 2019-03-05 |
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