CN107327555A - High speed static hydraulic drive system - Google Patents
High speed static hydraulic drive system Download PDFInfo
- Publication number
- CN107327555A CN107327555A CN201710700145.6A CN201710700145A CN107327555A CN 107327555 A CN107327555 A CN 107327555A CN 201710700145 A CN201710700145 A CN 201710700145A CN 107327555 A CN107327555 A CN 107327555A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- hydraulic pump
- hydraulic motor
- pressure
- vehicle
- 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.)
- Pending
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 22
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 25
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 abstract description 15
- 238000009434 installation Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
- F16H39/04—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
- F16H39/04—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit
- F16H39/06—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
A kind of high speed static hydraulic drive system is provided, axle gear box input on hydraulic pump, output end and the axletree being connected including input with transfer case delivery outlet driven by the engine is connected and hydraulic motor, the running control system of axle shaft rotation, hydraulic pump and hydraulic motor connect and compose an enclosed hydrostatic pressure system by fluid pressure line, and running control system is connected with hydraulic pump and hydraulic motor and controls its discharge capacity to realize vehicle stepless time adjustment respectively.The present invention uses hydrostatic transmissions technology, both railway engineering machinery constant-speed operation low under working condition can have been realized, also the high-speed cruising of railway engineering mechanical movement operating mode can be realized, under Same Efficieney rank, static hydraulic drive system volume and quality is smaller, speed adjustable range wider, mounting arrangement more flexibly, operation comfort it is more preferable.
Description
Technical field
The invention belongs to railway engineering field of mechanical technique, and in particular to a kind of high speed static hydraulic drive system.
Background technology
The driving type of current railway engineering machinery has machine driving, hydraulic power, electric transmission and hydrostatic transmissions.Machinery
Transmission is used for the relatively low vehicle of power level, there is the shortcomings of operation comfort is poor, complicated, vehicle layout is limited.Liquid
Power transmission can realize that relatively high power is transmitted compared with machine driving, although can stepless speed regulation and operation comfort is good, but there is also structure
The problems such as complicated, vehicle layout is limited.Electric transmission driving power scope is wide, can stepless speed regulation, operation comfort be good, vehicle layout
It is restricted small, but its structure is also relative complex.Hydrostatic transmissions possess the advantage of first three type of belt drive, while low speed operation is flat
Surely, accurate control can be achieved.Current railway engineering machinery is passed mostly using hydraulic power as main transmission scheme using hydrostatic
Act as the low constant speed accessory drive scheme of operation, and this scheme is relatively complicated, to adapt to vehicle driving requirements, it is necessary to
Exploitation is a kind of to be not only suitable for the static hydraulic drive system that the low constant-speed operation of operation is applied to high-speed cruising again.Therefore propose to improve.
The content of the invention
Present invention solves the technical problem that：One kind high speed static hydraulic drive system is provided, the present invention is passed using hydrostatic
Dynamic technology is to be converted by the energy of hydraulic pump and hydraulic motor, and combines the control of running control system, can both realize railway
Engineering machinery low constant-speed operation under working condition, can also realize the high-speed cruising of railway engineering mechanical movement operating mode, equal work(
Under rate rank, static hydraulic drive system volume and quality are smaller, speed adjustable range wider, mounting arrangement is more flexible, operation is comfortable
Property is more preferable.
The technical solution adopted by the present invention：High speed static hydraulic drive system, including input and driven by the engine point
Axle gear box input on hydraulic pump, output end and the axletree of dynamic case delivery outlet connection is connected and the liquid of axle shaft rotation
Pressure motor, running control system, the hydraulic pump and hydraulic motor connect and compose the hydrostatic system of an enclosed by fluid pressure line
System, the running control system is connected with hydraulic pump and hydraulic motor and controls its discharge capacity to realize vehicle stepless time adjustment respectively.
Wherein, the hydraulic pump and hydraulic motor can be correspondingly provided with multiple, the multiple hydraulic pressure according to the quantity of drive shaft
It is connected in parallel with each other between pump, the multiple hydraulic motor is connected in parallel with each other.
Further, oil inlet pipe, flowline and drain mast are equipped with the hydraulic pump and hydraulic motor, wherein, it is described
Oil inlet pipe and flowline are that valve gear is equipped with high-pressure oil pipe, the oil inlet pipe and flowline, and the drain mast is low pressure oil
Pipe.
Further, the valve gear can use high-pressure ball valve, hydraulic electromagnetic ball valve or screw-in cartridge valve.
Further, the hydraulic pump uses integrated on electric ratio oblique tray type axial plunger piston variable pump, the hydraulic pump set
There are the hydraulic pump displacement variation control module electrically connected with running control system and the slippage pump connected with hydraulic oil container on vehicle.
Further, the hydraulic motor uses integrated on electric ratio inclined plunger variable displacement motor, the hydraulic motor
Provided with the hydraulic motor displacement variation control module electrically connected with running control system and hydraulic motor is prevented to be emptied and intersecting of overloading
Overflow valve.
Further, the running control system includes thermoacoustic prime engine device, travelling control handle, driving display, pressure
Sensor, oil temperature sensor, vehicle speed sensor, the thermoacoustic prime engine device electrically connect with travelling control handle and receive what it was sent
Drive a vehicle command signal, the thermoacoustic prime engine device again respectively with the hydraulic pump displacement variation control module and hydraulic motor on hydraulic pump
Hydraulic motor displacement variation control module electrically connects and exports driving command signal conversion to hydraulic pump displacement variation control module and hydraulic pressure
Motor displacement variation control module realizes vehicle to run control, the pressure sensor, oil temperature sensor, vehicle speed sensor with driving
Controller electrically connects and the hydraulic system pressure of collection, hydraulic fluid temperature and vehicle wheel rotational speed driving states signal is inputed into driving
Controller, the thermoacoustic prime engine device electrically connects with driving display and the driving states signal of receiving is delivered into driving display
Show and then vehicle parameter is adjusted in real time by display of driving a vehicle.
Further, disengaging gear is located between the hydraulic motor and axle gear box.
The advantage of the present invention compared with prior art：
1st, this programme is to be converted by the energy of hydraulic pump and hydraulic motor using hydrostatic transmissions technology, and combines driving
The control of control system, can both realize railway engineering machinery constant-speed operation low under working condition, and can reach below 5km/h,
It can be achieved the high-speed cruising of railway engineering mechanical movement operating mode, highest running speed is up to 100km/h, under Same Efficieney rank,
The volume and quality of static hydraulic drive system are smaller, speed adjustable range wider, mounting arrangement more flexibly, operation comfort it is more preferable；
2nd, in this programme hydraulic pump and hydraulic motor formation enclosed hydrostatic pressure system transmission fast dynamics and
Design feature makes system operatio easy, accurate, flexibly more humane, the driving manipulation such as advance, retrogressing, acceleration and braking of vehicle
Bar completion can be combined in；
3rd, hydrostatic transmissions compared with machine driving, hydraulic machine and hydraulic power, eliminate gearbox in this programme, letter
System architecture is changed, has made vehicle layout simpler flexible；
4th, enclosed static hydraulic drive system output torque scope is very big in this programme, and output speed depends on the stream of hydraulic pump
Amount and it is unrelated with load, the accurate control of railway engineering mechanical movement speed and moment of torsion can be realized；And static hydraulic drive system
Engine speed can be scheduled on one it is both economical numerically constant, realize that system is defeated by the variable of hydraulic pump and hydraulic motor
Go out the regulation of rotating speed and moment of torsion, transmission efficiency is higher.
Brief description of the drawings
Fig. 1 is systematic schematic diagram of the invention；
Fig. 2 is the graphical symbol figure of hydraulic pump in the present invention；
Fig. 3 is the graphical symbol figure of hydraulic motor in the present invention；
Fig. 4 is the installation front view of hydraulic pump in the present invention；
Fig. 5 is the installation left view of hydraulic pump in the present invention；
Fig. 6 is the installation front view of hydraulic motor in the present invention；
Fig. 7 is the installation left view of hydraulic motor in the present invention；
Fig. 8 is traveling control device block diagram of the invention.
Embodiment
1-8 describes embodiments of the invention below in conjunction with the accompanying drawings.
High speed static hydraulic drive system, as shown in Figures 2 and 3, including input is exported with transfer case 7 driven by the engine
The input of axle gear box 8 on hydraulic pump 1, output end and the axletree 10 of mouth connection is connected and the hydraulic pressure of the rotation of axle shaft 10
Motor 5, running control system 12.Wherein, the hydraulic pump 1 and hydraulic motor 5 can be correspondingly provided with many according to the quantity of drive shaft
It is individual.
Illustrated in the present embodiment exemplified by using two hydraulic pumps 1, two hydraulic motors 5.Described two hydraulic pumps 1
Delivery outlet of the shaft end respectively with transfer case 7 is connected, as shown in Figures 4 and 5, the input of transfer case 7 and the hair being fixed on vehicle frame
Motivation output end is connected；Two output ends of hydraulic motor 5 are corresponding to be connected with the input port of axle gear box 8 that is being fixed on axletree 10
Connect, as shown in Figures 6 and 7, the output end of axle gear box 8 is connected with axletree 10, is set between hydraulic motor 5 and axle gear box 8
In disengaging gear 9, its effect is that the power between axle gear box 8 and hydraulic motor 5 is combined and disengagement.As shown in figure 1, described
It is connected in parallel with each other between two hydraulic pumps 1, described two hydraulic motors 5 are connected in parallel with each other, described two hydraulic pumps 1 and two
Individual hydraulic motor 5 connects and composes an enclosed hydrostatic pressure system by fluid pressure line.On the hydraulic pump 1 and hydraulic motor 5
Provided with oil inlet pipe, flowline and drain mast, wherein, the oil inlet pipe and flowline are high-pressure oil pipe, and the drain mast is low pressure
Oil pipe.Valve gear 11 is equipped with the oil inlet pipe and flowline of hydraulic pump 1 and hydraulic motor 5, it is preferred that the valve gear 11
High-pressure ball valve, hydraulic electromagnetic ball valve or screw-in cartridge valve can be used, when one of hydraulic pump 1 or a failure of hydraulic motor 5
When, pump is changed by operation or its oil circuit into and out of the high-pressure ball valve 11 set on oil pipe is cut off by hydraulic motor 5, system is still
It can work on.
The power conversion of the present invention：The power that engine is exported is passed to two hydraulic pumps 1 by transfer case 7, and hydraulic pump 1 will
The mechanical energy that engine transmission comes is converted into hydraulic energy, while hydraulic pump 1 passes the power that engine is transmitted by fluid pressure line
Two hydraulic motors 5 for being respectively arranged in two input ports of axle gear box 8 are passed, driving hydraulic motor 5 rotates, hydraulic motor
5 rotate when by hydraulic energy transfer be mechanical energy axle shaft gear-box 8, by axle gear box 8 reduce rotating speed, increase moment of torsion it is defeated
Go out driving moment rotation and realize vehicle to run.The mechanical energy that engine transmission comes is converted into hydraulic energy by hydraulic pump 1, and hydraulic pressure horse
It is again mechanical energy by hydraulic energy transfer up to 5, the essence of engine output speed and moment of torsion can be realized by this energy conversion process
True step-less adjustment.
It is preferred that, the hydraulic pump 1 uses integrated on electric ratio oblique tray type axial plunger piston variable pump, the hydraulic pump 1 set
There are the hydraulic pump displacement variation control module 3 electrically connected with running control system 12 and the slippage pump connected with hydraulic oil container on vehicle 19
2, forward and reverse stepless variable of plunger variable pump can be achieved.Hydraulic pump displacement variation control module 3 connects what running control system 12 was sent
Instruction control hydraulic pump stroking mechanism variable realizes the stepless change of hydraulic pressure pump output flow；Slippage pump 2 is inhaled from hydraulic oil container 19
The oil supply in-line of hydraulic pump 1, the hydraulic oil that supplement hydraulic pump 1 and the housing of hydraulic motor 5 are released, the hydraulic pressure that slippage pump 2 is supplied
Oil is the cold oil in hydraulic oil container 19, and what is displaced is the deep fat in loop, can reach the purpose of hydraulic system radiating.
It is preferred that, the hydraulic motor 5 uses integrated on electric ratio inclined plunger variable displacement motor, the hydraulic motor 5
Provided with the hydraulic motor displacement variation control module 4 that is electrically connected with running control system 12 and hydraulic motor 5 is prevented to be emptied and overload
Intersect overflow valve 6, hydraulic motor displacement variation control module 4 receives the instruction that running control system 12 is sent, hydraulic motor 5 can be achieved
Stepless variable, the effect for intersecting overflow valve 6 is to prevent hydraulic motor 5 to be emptied and overload.
The present invention realizes the stepless time adjustment of vehicle by running control system 12, the running control system 12 respectively with liquid
Press pump 1 and hydraulic motor 5 connect and control its discharge capacity to realize vehicle stepless time adjustment.Specifically, as shown in figure 8, the driving control
System 12 processed includes thermoacoustic prime engine device 15, travelling control handle 13, driving display 18, pressure sensor 14, oil temperature sensor
16th, vehicle speed sensor 17.Wherein, thermoacoustic prime engine device 15 is the control centre of vehicle to run, the thermoacoustic prime engine device 15 and walking
Joystick 13 electrically connects and received the driving command signal such as its advance sent, retrogressing, acceleration and braking, the thermoacoustic prime engine
Device 15 again respectively with the hydraulic motor displacement variation control module in the hydraulic pump displacement variation control module 3 and hydraulic motor 5 on hydraulic pump 1
The driving command signal conversion output of the travelling control handle 13 of receiving is given hydraulic pump variable by 4 electrical connections, thermoacoustic prime engine device 15
Control module 3 and hydraulic motor displacement variation control module 4 realize vehicle to run control.The pressure sensor 14, oil temperature sensor
16th, vehicle speed sensor 17, driving display 18 electrically connected with thermoacoustic prime engine device 15, pressure sensor 14, oil temperature sensor 16,
Vehicle speed sensor 17 is used for hydraulic system pressure, hydraulic fluid temperature and the wheel rotation speed signals of collection vehicle running, these
The driving states signal of sensor collection inputs to traveling controller 15, exports aobvious to walking by the processing of traveling controller 15
Show device 18, shown in real time.And vehicle parameter can be modified by the touch screen functionality for display 18 of walking, it is amended
Parameter may be output to traveling controller 15.Display 18 of walking also has malfunction coefficient function, by browsing walking display 18
On malfunction coefficient search failure, vehicle trouble tentatively can be judged and be handled.Traveling controller 15 has read-write capability,
Outer computer write-in can be connected by external connection interface section and decline thermoacoustic prime engine program.
The present invention uses hydrostatic transmissions technology, can both realize railway engineering machinery constant-speed operation low under working condition,
Below 5km/h is can reach, the high-speed cruising of railway engineering mechanical movement operating mode can be also realized, highest running speed is up to 100km/
Under h, Same Efficieney rank, the volume and quality of static hydraulic drive system are smaller, speed adjustable range wider, mounting arrangement is cleverer
Living, operation comfort is more preferable；And the fast dynamics and design feature that hydrostatic pressure system is driven in the present invention grasp system
Make easy, accurate, flexibly more humane, the driving manipulation such as advance, retrogressing, acceleration and braking of vehicle can combine in a bar and complete,
Other kinds of drive are compared, and eliminate gearbox, simplify system architecture, make vehicle layout simpler flexible.
Above-described embodiment, simply presently preferred embodiments of the present invention, not for limiting the scope of the present invention, thus it is all with this
The equivalence changes that content described in invention claim is done, all should be included within scope of the invention as claimed.
Claims (8)
1. high speed static hydraulic drive system, it is characterised in that：Including input and transfer case driven by the engine (7) delivery outlet
Axle gear box (8) input on hydraulic pump (1), output end and the axletree (10) of connection is connected and axle shaft (10) is rotated
Hydraulic motor (5), running control system (12), the hydraulic pump (1) and hydraulic motor (5) are connected and composed by fluid pressure line
One enclosed hydrostatic pressure system, the running control system (12) is connected and controlled with hydraulic pump (1) and hydraulic motor (5) respectively
Its discharge capacity realizes vehicle stepless time adjustment.
2. high speed static hydraulic drive system according to claim 1, it is characterised in that：The hydraulic pump (1) and hydraulic pressure horse
It can be correspondingly provided with multiple, be connected in parallel with each other between the multiple hydraulic pump (1) according to the quantity of drive shaft up to (5), it is described many
Individual hydraulic motor (5) is connected in parallel with each other.
3. high speed static hydraulic drive system according to claim 2, it is characterised in that：The hydraulic pump (1) and hydraulic pressure horse
Oil inlet pipe, flowline and drain mast are equipped with up to (5), wherein, the oil inlet pipe and flowline are high-pressure oil pipe, the oil-feed
Valve gear (11) is equipped with pipe and flowline, the drain mast is low pressure pipe.
4. high speed static hydraulic drive system according to claim 3, it is characterised in that：The valve gear (11) can be using height
Pressure ball valve, hydraulic electromagnetic ball valve or screw-in cartridge valve.
5. the high speed static hydraulic drive system according to claim 1,2,3 or 4, it is characterised in that：The hydraulic pump (1) is adopted
Integrated be provided with electrically connects with running control system (12) on electricity consumption ratio oblique tray type axial plunger piston variable pump, the hydraulic pump (1)
Hydraulic pump displacement variation control module (3) and the slippage pump (2) that is connected with hydraulic oil container on vehicle (19).
6. high speed static hydraulic drive system according to claim 5, it is characterised in that：The hydraulic motor (5) is using electricity
It is integrated provided with the liquid electrically connected with running control system (12) on ratio inclined plunger variable displacement motor, the hydraulic motor (5)
Pressure motor displacement variation control module (4) and the intersection overflow valve (6) for preventing hydraulic motor (5) to be emptied and overload.
7. high speed static hydraulic drive system according to claim 6, it is characterised in that：Running control system (12) bag
Include thermoacoustic prime engine device (15), travelling control handle (13), driving display (18), pressure sensor (14), oil temperature sensor
(16), vehicle speed sensor (17), the thermoacoustic prime engine device (15) electrically connects with travelling control handle (13) and receives what it was sent
Drive a vehicle command signal, the thermoacoustic prime engine device (15) but respectively with the hydraulic pump displacement variation control module (3) and liquid on hydraulic pump (1)
Hydraulic motor displacement variation control module (4) electrical connection and the command signal conversion output that will drive a vehicle on pressure motor (5) become to hydraulic pump
Amount control module (3) and hydraulic motor displacement variation control module (4) realize vehicle to run control, the pressure sensor (14), oil
Temperature sensor (16), vehicle speed sensor (17) are electrically connected with thermoacoustic prime engine device (15) and by the hydraulic system pressure of collection, liquid
Force feed temperature and vehicle wheel rotational speed driving states signal input to thermoacoustic prime engine device (15), and the thermoacoustic prime engine device (15) is aobvious with driving
Show device (18) electrical connection and the driving states signal of receiving is delivered to driving display (18) and carry out display in real time and by row
Car display (18) is adjusted to vehicle parameter.
8. high speed static hydraulic drive system according to claim 6, it is characterised in that：The hydraulic motor (5) and axletree
Disengaging gear (9) is located between gear-box (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700145.6A CN107327555A (en) | 2017-08-16 | 2017-08-16 | High speed static hydraulic drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700145.6A CN107327555A (en) | 2017-08-16 | 2017-08-16 | High speed static hydraulic drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107327555A true CN107327555A (en) | 2017-11-07 |
Family
ID=60200991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710700145.6A Pending CN107327555A (en) | 2017-08-16 | 2017-08-16 | High speed static hydraulic drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107327555A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249801A (en) * | 2018-09-22 | 2019-01-22 | 江苏悦达专用车有限公司 | A kind of hydrostatic low speed running gear |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202413794U (en) * | 2011-11-30 | 2012-09-05 | 北京二七轨道交通装备有限责任公司 | Dynamical system and traction power vehicle |
| CN102808915A (en) * | 2011-05-31 | 2012-12-05 | 北京理工大学 | Integrated comprehensive type hydrostatic driving stepless transmission mechanism for high-speed track-laying vehicle |
| CN103660928A (en) * | 2013-12-27 | 2014-03-26 | 谷维才 | Autonomous-heat-exchange parallel-connection closed type forklift static-pressure drive system |
| CN203780640U (en) * | 2014-03-27 | 2014-08-20 | 南昌欧克传动技术有限公司 | Walking assembly of caterpillar vehicle |
| CN105971052A (en) * | 2016-06-28 | 2016-09-28 | 长安大学 | Land leveller traveling hydraulic driving system with parallel connection of double pumps and double motors |
| CN207229697U (en) * | 2017-08-16 | 2018-04-13 | 宝鸡中车时代工程机械有限公司 | High speed static hydraulic drive system |
-
2017
- 2017-08-16 CN CN201710700145.6A patent/CN107327555A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808915A (en) * | 2011-05-31 | 2012-12-05 | 北京理工大学 | Integrated comprehensive type hydrostatic driving stepless transmission mechanism for high-speed track-laying vehicle |
| CN202413794U (en) * | 2011-11-30 | 2012-09-05 | 北京二七轨道交通装备有限责任公司 | Dynamical system and traction power vehicle |
| CN103660928A (en) * | 2013-12-27 | 2014-03-26 | 谷维才 | Autonomous-heat-exchange parallel-connection closed type forklift static-pressure drive system |
| CN203780640U (en) * | 2014-03-27 | 2014-08-20 | 南昌欧克传动技术有限公司 | Walking assembly of caterpillar vehicle |
| CN105971052A (en) * | 2016-06-28 | 2016-09-28 | 长安大学 | Land leveller traveling hydraulic driving system with parallel connection of double pumps and double motors |
| CN207229697U (en) * | 2017-08-16 | 2018-04-13 | 宝鸡中车时代工程机械有限公司 | High speed static hydraulic drive system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249801A (en) * | 2018-09-22 | 2019-01-22 | 江苏悦达专用车有限公司 | A kind of hydrostatic low speed running gear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203868275U (en) | Hydraulic stepless speed change transmission mechanism | |
| CN102128260B (en) | Hydraulic circuit for a power transmission device | |
| CN203639965U (en) | Hydraulic device for traveling of bulldozer | |
| CN104179925A (en) | Convergence type hydraulic and mechanical continuously variable transmission provided with double planet rows | |
| US8650979B2 (en) | Drive system of an electric vehicle | |
| SE531391C2 (en) | Device and method for a continuously variable transmission of a vehicle | |
| CN102359567A (en) | Full-automatic continuously variable transmission of tractor | |
| CN103758976A (en) | Power transmission system and grader | |
| EP2860426B1 (en) | Hydro-mechanical Transmission | |
| CN103899724A (en) | Hydraulic stepless speed-change transmission mechanism | |
| TWI494232B (en) | Drive system and electric vehicle having the same | |
| CN207229697U (en) | High speed static hydraulic drive system | |
| CN107327555A (en) | High speed static hydraulic drive system | |
| CN113932006A (en) | Hydraulic control system of DHT (continuously variable Transmission) | |
| CN106246859A (en) | A kind of buncher of composite hydraulic torque converter | |
| CN116056931A (en) | Fluid supply device for electric drive train | |
| CN203681279U (en) | Hydrostatic and mechanical combined four-wheel drive transmission device of harvesting machine | |
| CN101793315B (en) | Mechanical and hydraulic combined power transmission mechanism | |
| CN102959284B (en) | Dump truck | |
| CN204398866U (en) | High-power all-hydraulic liquid nitrogen pump actuating device and direct-combustion type liquid nitrogen pump truck | |
| CN206360696U (en) | One kind is based on hydraulic closed transmission system variable speed winning machine cutting part | |
| CN207018464U (en) | A kind of machine liquid composite transmission based on Stress control | |
| CN101204781A (en) | Machine tool main axis constant power device of oil motor drive | |
| CN207111873U (en) | Hydraulic machinery stepless speed change device mechanical gear box | |
| CN108006188B (en) | Double-speed hydraulic hybrid power driving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171107 |
|
| RJ01 | Rejection of invention patent application after publication |