CN107776401A - A kind of dual-speed hydraulic running gear - Google Patents
A kind of dual-speed hydraulic running gear Download PDFInfo
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- CN107776401A CN107776401A CN201711160677.1A CN201711160677A CN107776401A CN 107776401 A CN107776401 A CN 107776401A CN 201711160677 A CN201711160677 A CN 201711160677A CN 107776401 A CN107776401 A CN 107776401A
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- solenoid electric
- electric valve
- speed
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- 230000008859 change Effects 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 239000003921 oil Substances 0.000 description 38
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
The invention discloses a kind of dual-speed hydraulic running gear, including hydraulic pump and hydraulic motor, the first solenoid electric valve for adjusting the speed of travel is connected between hydraulic pump and hydraulic motor, hydraulic motor can two point variables, realize variable speed, according to different operating modes, the requirement of the different speeds of travel is realized；The second solenoid electric valve for brake hard is provided with hydraulic pump, the emergency brake of running gear can be achieved, it is ensured that walking is safe, and the pivot turn of running gear can be realized by control handle, can freely be walked in the region of narrow space.The system has the advantages that integrated level is high, compact-sized, control is flexible, feature-rich, is a set of economic and environment-friendly, reliability and durability Hydraulic Power Transmission System.
Description
Technical field
The invention belongs to running gear structure-design technique field, a kind of dual-speed hydraulic running gear of specific design.
Background technology
Automobile and tractor running gear is to be changed into the driving torque that engine is passed on driving wheel to promote automobile and tractor
The driving force of form, and the rotation of driving wheel is become the movement of automobile and tractor on the ground, ensure that automobile is drawn as far as possible
The ride comfort of machine traveling.
Running gear mainly uses the shape such as Hydrostatic-mechanical Transmission, hydraulic drive, machine driving, electric transmission in conventional art
Formula, walking transmission system in the market is more based on machine driving, and so-called machine driving refers to from engine to wheel
Actuated element uses mechanical part, generally comprises clutch, gearbox, power transmission shaft etc., but machine driven system operation inconvenience, and
Stationarity is poor.
It is big that hydraulic drive possesses transmission power, is made the advantages that flexible arrangement, easily controllable, stable drive and widely
With.But the appearance of multiple functional a whole set of hydraulic travel system is there is no in current running gear.Running gear mainly includes straight
Line walking, accelerate the method for operation such as walking and steering, but traditional running gear structure can not realize the stepless of running gear
Speed change, and need larger space for its turning when turning to and turn around, or even need the operation of multiple forward-reverse next real
It is existing, control inconvenience, can not freely it be walked in cell domain space.
Therefore, in view of problem above, it is necessary to a kind of higher hydraulic travel system of integrated level is proposed, during realizing walking
Variable speed, improve the stationarity in walking, and facilitate speed regulating control, while meet the requirement of pivot turn.
The content of the invention
In view of this, the invention provides a kind of dual-speed hydraulic running gear, running gear to pass through hydraulic drive, operation side
Just, and by setting solenoid electric valve to control the output of slippage pump pressure oil, to realize variable speed when walking, speed governing is facilitated
Control, the stationarity in walking is improved, while meet the requirement of pivot turn.
A kind of dual-speed hydraulic running gear proposed according to the purpose of the present invention, including hydraulic pump and the hydraulic pump pass
The hydraulic motor and reductor of dynamic connection, are connected with for adjusting the speed of travel between the hydraulic pump and the hydraulic motor
First solenoid electric valve, the first solenoid electric valve both ends connect the slippage pump of hydraulic pump and the variable of hydraulic motor respectively
Cylinder；
During normal walking, hydraulic energy is converted to mechanical energy and turned by hydraulic pump output hydraulic pressure oil to hydraulic motor, hydraulic motor
Speed and moment of torsion, are exported, now the first solenoid electric valve is off-state after being slowed down afterwards by reductor；When accelerating walking, the
One solenoid electric valve connects, the variable cylinder of the pressure oil introducing hydraulic motor of slippage pump, and the angle change of swash plate, subtracts in variable cylinder
Small displacement, realize and accelerate walking.
Preferably, first solenoid electric valve is two-position two-way solenoid valve, during the first solenoid electric valve no power, repairing
Pump does not connect with the variable cylinder of hydraulic motor, and hydraulic motor operates according to normal speed；When first solenoid electric valve is powered, repairing
Pump connects with the variable cylinder of hydraulic motor, hydraulic motor accelerated service.
Preferably, the hydraulic travel system drives running gears, including the two groups of hydraulic pumps and hydraulic pressure being arranged in series for two
Motor, two groups of hydraulic motors are disposed opposite to each other, and the corresponding both sides for driving running gear, are provided with swash plate in the hydraulic pump, institute
State and operation handle is provided with hydraulic pump, both sides operation handle operates forward or backwards simultaneously when, the swash plate in two groups of hydraulic pumps
Turn on the contrary, realize that walking mechanism is advanced or retreated, during the operation handle side forward direction side reverse operating, two groups of hydraulic pumps
Interior swash plate turns to identical, walking mechanism side advance side retrogressing, running gear pivot turn.
Preferably, swash plate is provided with the hydraulic pump, the swash plate is driven by a variable cylinder, on the hydraulic pump also
The second solenoid electric valve for realizing brake hard is provided with, two are provided with the valve body of second solenoid electric valve
One oil circuit hole, two the second oil circuit holes is offered on the both ends of variable cylinder, the second oil circuit hole is communicated to the cavity at variable cylinder both ends
Interior, two the first oil circuit holes are corresponding respectively with two the second oil circuit holes and connect；During normal work, two the first oil circuit holes do not connect
It is logical, when promptly returning middle, two the first oil circuit holes connections so that the cavity connection at variable cylinder both ends, both ends cavity internal pressure is equal,
Variable cylinder driving swash plate returns to zero pivot angle, promptly returns to middle position.
Preferably, second solenoid electric valve is two-position two-way solenoid valve, during the second solenoid electric valve no power, two
First oil circuit hole does not connect, hydraulic pump normal work；When second solenoid electric valve is powered, two the first oil circuit hole connections are described
The cavity connection at variable cylinder both ends, both ends cavity internal pressure is equal, and variable cylinder driving swash plate returns to zero pivot angle, in promptly returning to
Position.
Preferably, an oil circuit is set up outside the hydraulic pump, second solenoid electric valve is arranged on the oil circuit, institute
The both ends for stating oil circuit are communicated to two the second oil circuit holes.
Preferably, second solenoid electric valve is arranged at the outside of hydraulic pump, and is set independently of hydraulic pump.
Preferably, the friction plate for parking braking is additionally provided with the hydraulic motor.
Compared with prior art, it is the advantages of dual-speed hydraulic running gear disclosed by the invention：
1) system is made up of hydraulic pump, hydraulic motor and reductor, solenoid electric valve, has integrated level height, structure
It is compact, control it is flexible, feature-rich the advantages that, the system can be widely applied to the walking machines such as wheeled, crawler type, be a set of warp
Help environmentally friendly, reliability and durability Hydraulic Power Transmission System.
2) hydraulic motor can two point variables, can realize the requirement of the different speeds of travel according to different operating modes, realize stepless change
Speed, meet straight line moving, pivot turn, the walking requirement of service brake.
3) hydraulic system realizes the purpose of walking machine pivot turn by manipulating the direction of rotation of hydraulic pump handle,
Can freely it be walked in the region of narrow space.
4) solenoid electric valve is integrated on hydraulic pump, the emergency brake of running gear can be achieved, it is ensured that running gear safety.
5) system is equipped with friction plate, and parking braking can be achieved, and meets the safety stop of walking machine.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of dual-speed hydraulic running gear disclosed by the invention.
The title of digital or alphabetical representative corresponding component in figure：
10th, hydraulic pump 20, hydraulic motor 30, reductor
11st, the first solenoid electric valve 12, the second solenoid electric valve 13, variable cylinder 14, slippage pump
21st, variable cylinder 22, friction plate
Embodiment
Just as described in the background section, in the market walking transmission system is more based on machine driving, there is no work(
The appearance of a whole set of hydraulic travel system that can be complete, can not realize the variable speed and pivot turn of running gear.
The present invention is directed to deficiency of the prior art, there is provided a kind of dual-speed hydraulic running gear, running gear pass through liquid
Pressure transmission, it is easy to operate, and by setting solenoid electric valve to control the output of slippage pump pressure oil, it is stepless when being walked with realizing
Speed change, facilitate speed regulating control, improve the stationarity in walking, while meet the requirement of pivot turn.
Technical scheme will be clearly and completely described by embodiment below.Obviously, retouched
The embodiment stated is only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to the present invention
The scope of protection.
Fig. 1 is referred to, Fig. 1 discloses best mode for carrying out the invention, contains variable speed, the pirouette of running gear
The functions such as curved and brake hard, only variable speed can also be combined with pivot turn or brake hard in other embodiment, be had
Body is not limited.
As illustrated, a kind of dual-speed hydraulic running gear, including hydraulic pump 10, the hydraulic pressure horse with the drive connection of hydraulic pump 10
Up to 20 and reductor 30, the first solenoid electric valve for adjusting the speed of travel is connected between hydraulic pump 10 and hydraulic motor 20
11, the both ends of the first solenoid electric valve 11 connect the slippage pump 14 of hydraulic pump 10 and the variable cylinder 21 of hydraulic motor 20 respectively；Normally
During walking, hydraulic energy is converted to mechanical energy rotating speed and torsion by the output hydraulic pressure oil of hydraulic pump 10 to hydraulic motor 20, hydraulic motor 20
Square, exported after being slowed down afterwards by reductor 30, now the first solenoid electric valve 11 is off-state；When accelerating walking, first
Solenoid electric valve 11 connects, the variable cylinder 21 of the pressure oil introducing hydraulic motor 20 of slippage pump 14, the angle of swash plate in variable cylinder 21
Degree change, reduces discharge capacity, so as in the case where input flow rate is constant, improve the output speed of hydraulic motor, walking machine speed
Degree is inherently derived lifting.
Preferably, the first solenoid electric valve is 11 two-position two-way solenoid valves, during the first 11 no power of solenoid electric valve, repairing
Pump 14 does not connect with the variable cylinder 21 of hydraulic motor, and hydraulic motor 20 operates according to normal speed；First solenoid electric valve 11 is logical
When electric, slippage pump 14 connects with the variable cylinder 21 of hydraulic motor 20, the accelerated service of hydraulic motor 20, realizes the mesh of stepless speed regulation
, ensure running gear traveling comfort.
Preferably, hydraulic travel system is two to drive running gears, including two groups of hydraulic pumps 10 being arranged in series and with two
Two groups of hydraulic motors 20 of group hydraulic pump driving connection, two groups of hydraulic motors 20 are disposed opposite to each other, and corresponding driving running gear
Both sides, swash plate 1, swash plate 2 are correspondingly arranged in two hydraulic pumps 10, operation handle (not shown), both sides are provided with hydraulic pump 10
Operation handle manipulates the hydraulic pump of both sides respectively, when both sides operation handle operates forward or backwards simultaneously, two groups of hydraulic pumps 10
Interior swash plate 1, swash plate 2 are turned on the contrary, realizing that walking mechanism is advanced or retreated, when operation handle side forward direction side reverse operating
When, swash plate 1, swash plate 2 in two groups of hydraulic pumps 10 turn to identical, and walking mechanism side advance side retreats, and realizes running gear
Pivot turn.Specific control mode is as follows：
Under the operation of the operation handle of hydraulic pump 10, when swash plate 1 turns clockwise, oil circuit 1 is high-pressure oil passage, driving one
The rotate counterclockwise of side hydraulic motor 20, is finally exported clockwise by reductor 30, and now, the rotate counterclockwise of swash plate 2, oil circuit 4 is
High-pressure oil passage, driving opposite side hydraulic motor 20 turn clockwise, finally exported counterclockwise by reductor 30, due to two hydraulic pressure
Motor is back-to-back installation, therefore, finally realizes that walking machine moves ahead, and when aforesaid operations are simultaneously reverse, oil circuit 2 is hydraulic oil
Road, oil circuit 3 are high-pressure oil passage, and walking machine retreats, and realize the straight ahead of running gear and the function of retreating.
And when swash plate 1 and swash plate 2 are clockwise or counterclockwise, final walking machine is left-hand bend or turns right
It is curved.In practical operation, during turning, operation handle is in certain angle, now, the swash plate of one of hydraulic pump may proceed to by
Same direction rotates, and another swash plate then reversely rotates, and with the increase of both angles, turning speed then can gradually be accelerated, for example,
When walking machine moves ahead, swash plate 1 is clockwise, and it will continue toward turning clockwise, and up to maximum, and swash plate 2 is initially counterclockwise,
During turning, then toward turning clockwise, such walking machine starts to turn, until turning speed is maximum, realizes running gear original place
The function of turning, meet that running gear is freely walked in the region of narrow space.
Further, by taking unilateral hydraulic pump as an example, swash plate 1 is provided with hydraulic pump 10, swash plate 1 is driven by a variable cylinder 13
It is dynamic, the second solenoid electric valve 12 for realizing brake hard, the valve of the second solenoid electric valve 12 are additionally provided with hydraulic pump 10
Two the first oil circuit hole (not shown) are provided with body, offering two the second oil circuit holes on the both ends of variable cylinder 13 (does not show
Go out), the second oil circuit hole is communicated in the cavity at variable cylinder both ends, and two the first oil circuit holes and two the second oil circuit holes are corresponding respectively
And connect, i.e. two the first oil circuit holes of the second solenoid electric valve 12 are respectively communicated in two cavitys of variable cylinder 13.Normally
During work, two the first oil circuit holes do not connect, i.e., the second solenoid electric valve 12 does not work to variable cylinder.When in urgent time, two
Individual first oil circuit hole connection so that the cavity connection at variable cylinder both ends, both ends cavity internal pressure is equal, in the effect of return spring
Under, variable cylinder 13 drives swash plate 1 to return to zero pivot angle, promptly returns to middle position, realizes the function of running gear driving brake hard.Pass
The servo valve braking passed through in the hydraulic system of system, when servo valve, which breaks down, to return to middle position, the second electricity can be passed through
Magnetic control valve promptly returns to middle position, realizes the urgent effective brake of running gear, improves the security performance of vehicle, reduce master
The economic loss of machine.
Preferably, the second solenoid electric valve 12 is two-position two-way solenoid valve, during the second 12 no power of solenoid electric valve, two
First oil circuit hole does not connect, the normal work of hydraulic pump 10；When second solenoid electric valve 12 is powered, two the first oil circuit hole connections,
The cavity connection at the variable cylinder both ends, both ends cavity internal pressure is equal, and variable cylinder driving swash plate returns to zero pivot angle, promptly returns to
Middle position.In this scenario, braking is realized only when the second solenoid electric valve is powered, the second solenoid electric valve is disconnected during normal work
Electricity condition, therefore more save.First solenoid electric valve is likewise supplied with the characteristic.
Preferably, the outside of hydraulic pump 10 can set up an oil circuit, and the second solenoid electric valve 12 is arranged on the oil circuit, and is controlled
The break-make on liquefaction road.
Preferably, the second solenoid electric valve 12 is arranged at the outside of hydraulic pump 10, and is set independently of hydraulic pump 10.Can be
It is standby during the servo valve failure of hydraulic pump, it also can directly be controlled and braked by the second solenoid electric valve.Due to the second Electromagnetic Control
Valve is set independently of hydraulic pump, so even the second solenoid electric valve breaks down also will not cause shadow to the use of hydraulic pump
Ring, repair and replacement are convenient.
In addition, being additionally provided with the friction plate 22 for parking braking on hydraulic motor 20, the function of forming braking is realized.
To sum up, the running gear is made up of hydraulic series double pump, hydraulic motor and reductor, solenoid electric valve, is had
The advantages that integrated level is high, compact-sized, control is flexible, feature-rich, the system can be widely applied to the walking such as wheeled, crawler type
Machinery, it is a set of economic and environment-friendly, reliability and durability Hydraulic Power Transmission System.The system is by changing the swash plate angle of hydraulic series double pump
Degree, realizes variable speed, meets straight line moving, pivot turn, the walking requirement of service brake.The control mode of hydraulic pump can hand
Control, hydraulic control, can also be automatically controlled, and mode is flexible and changeable, can be according to different clients demand custom-made.Meanwhile integrated on hydraulic pump
Solenoid electric valve, the emergency brake of walking machine can be achieved, it is ensured that walking machine safety.And hydraulic motor can two point variables, can
According to different operating modes, different speed of travel requirements are realized, meanwhile, friction plate is equipped with, parking braking can be achieved, meet vehicle with walking machine
The safety stop of tool.The hydraulic system is reversely rotated by changing hydraulic pump handle and walking machine pivot turn can be achieved, can be
Freely walk in the region of narrow space.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (8)
- A kind of 1. dual-speed hydraulic running gear, it is characterised in that the hydraulic pressure horse being connected including hydraulic pump, with the hydraulic pump driving Reach and reductor, the first Electromagnetic Control for adjusting the speed of travel is connected between the hydraulic pump and the hydraulic motor Valve, the first solenoid electric valve both ends connect the slippage pump of hydraulic pump and the variable cylinder of hydraulic motor respectively；During normal walking, hydraulic pump output hydraulic pressure oil to hydraulic motor, hydraulic motor by hydraulic energy be converted to mechanical energy rotating speed and Moment of torsion, exported after being slowed down afterwards by reductor, now the first solenoid electric valve is off-state；When accelerating walking, the first electricity Magnetic control valve connects, the variable cylinder of the pressure oil introducing hydraulic motor of slippage pump, and the angle change of swash plate, reduces row in variable cylinder Amount, realize and accelerate walking.
- 2. dual-speed hydraulic running gear according to claim 1, it is characterised in that first solenoid electric valve is two Two-way electromagnetic valve, during the first solenoid electric valve no power, slippage pump does not connect with the variable cylinder of hydraulic motor, hydraulic motor according to Normal speed operates；When first solenoid electric valve is powered, slippage pump connects with the variable cylinder of hydraulic motor, and hydraulic motor accelerates fortune Turn.
- 3. dual-speed hydraulic running gear according to claim 1, it is characterised in that the hydraulic travel system is that two drives are gone Walking system, including the two groups of hydraulic pumps and hydraulic motor being arranged in series, two groups of hydraulic motors are disposed opposite to each other, and corresponding drive is walked The both sides of system, swash plate is provided with the hydraulic pump, operation handle is provided with the hydraulic pump, both sides operation handle is simultaneously When operating forward or backwards, the swash plate in two groups of hydraulic pumps is turned on the contrary, realizing that walking mechanism is advanced or retreated, the manipulator During the reverse operating of handle side forward direction side, the swash plate in two groups of hydraulic pumps turns to identical, walking mechanism side advance side retrogressing, Running gear pivot turn.
- 4. dual-speed hydraulic running gear according to claim 1, it is characterised in that swash plate is provided with the hydraulic pump, The swash plate is driven by a variable cylinder, and the second Electromagnetic Control for realizing brake hard is additionally provided with the hydraulic pump Valve, two the first oil circuit holes are provided with the valve body of second solenoid electric valve, two are offered on the both ends of variable cylinder Two oil circuit holes, the second oil circuit hole are communicated in the cavity at variable cylinder both ends, two the first oil circuit holes and two the second oil circuit holes point Dui Ying and it not connect；During normal work, two the first oil circuit holes do not connect, and when promptly returning middle, two the first oil circuit holes connections, make The cavity connection at variable cylinder both ends is obtained, both ends cavity internal pressure is equal, and variable cylinder driving swash plate returns to zero pivot angle, in promptly returning to Position.
- 5. dual-speed hydraulic running gear according to claim 4, it is characterised in that second solenoid electric valve is two Two-way electromagnetic valve, during the second solenoid electric valve no power, two the first oil circuit holes do not connect, hydraulic pump normal work；Second electricity When magnetic control valve is powered, two the first oil circuit hole connections, the cavity connection at the variable cylinder both ends, both ends cavity internal pressure phase Zero pivot angle is returned to Deng, variable cylinder driving swash plate, promptly returns to middle position.
- 6. dual-speed hydraulic running gear according to claim 4 a, it is characterised in that oil is set up outside the hydraulic pump Road, second solenoid electric valve are arranged on the oil circuit, and the both ends of the oil circuit are communicated to two the second oil circuit holes.
- 7. dual-speed hydraulic running gear according to claim 4, it is characterised in that second solenoid electric valve is arranged at The outside of hydraulic pump, and set independently of hydraulic pump.
- 8. according to the dual-speed hydraulic running gear described in claim any one of 1-7, it is characterised in that on the hydraulic motor also It is provided with the friction plate for parking braking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711160677.1A CN107776401B (en) | 2017-11-20 | 2017-11-20 | Double-speed hydraulic traveling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711160677.1A CN107776401B (en) | 2017-11-20 | 2017-11-20 | Double-speed hydraulic traveling system |
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| Publication Number | Publication Date |
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| CN107776401A true CN107776401A (en) | 2018-03-09 |
| CN107776401B CN107776401B (en) | 2024-05-17 |
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ID=61429589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711160677.1A Active CN107776401B (en) | 2017-11-20 | 2017-11-20 | Double-speed hydraulic traveling system |
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| Country | Link |
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| CN (1) | CN107776401B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204277A (en) * | 2018-09-26 | 2019-01-15 | 中国重汽集团柳州运力科迪亚克机械有限责任公司 | Snow sweeper brake system control method |
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|---|---|---|---|---|
| SU1031806A1 (en) * | 1982-05-07 | 1983-07-30 | Московский автомеханический институт | Volumetric hydraulic transmission for self-propelled machine |
| CN102390257A (en) * | 2011-09-15 | 2012-03-28 | 江苏四明工程机械有限公司 | High and low-speed travel driving electric-hydraulic control system of engineering machinery |
| CN102555793A (en) * | 2011-12-15 | 2012-07-11 | 中联重科股份有限公司 | Driving system for engineering machinery and closed hydraulic circuit thereof |
| CN103213494A (en) * | 2013-04-26 | 2013-07-24 | 江苏四明工程机械有限公司 | Self-walking mechanical double-speed walking electro-hydraulic control system |
| CN103899724A (en) * | 2014-04-22 | 2014-07-02 | 交城县华昌泰机械制造有限公司 | Hydraulic stepless speed-change transmission mechanism |
| CN105156342A (en) * | 2015-09-22 | 2015-12-16 | 力源液压系统（贵阳）有限公司 | Automatic temperature control vehicle-mounted hydraulic driven fan system and control method adopting same |
| CN207433277U (en) * | 2017-11-20 | 2018-06-01 | 力源液压（苏州）有限公司 | A kind of dual-speed hydraulic running gear |
-
2017
- 2017-11-20 CN CN201711160677.1A patent/CN107776401B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1031806A1 (en) * | 1982-05-07 | 1983-07-30 | Московский автомеханический институт | Volumetric hydraulic transmission for self-propelled machine |
| CN102390257A (en) * | 2011-09-15 | 2012-03-28 | 江苏四明工程机械有限公司 | High and low-speed travel driving electric-hydraulic control system of engineering machinery |
| CN102555793A (en) * | 2011-12-15 | 2012-07-11 | 中联重科股份有限公司 | Driving system for engineering machinery and closed hydraulic circuit thereof |
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| CN103899724A (en) * | 2014-04-22 | 2014-07-02 | 交城县华昌泰机械制造有限公司 | Hydraulic stepless speed-change transmission mechanism |
| CN105156342A (en) * | 2015-09-22 | 2015-12-16 | 力源液压系统（贵阳）有限公司 | Automatic temperature control vehicle-mounted hydraulic driven fan system and control method adopting same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204277A (en) * | 2018-09-26 | 2019-01-15 | 中国重汽集团柳州运力科迪亚克机械有限责任公司 | Snow sweeper brake system control method |
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| Publication number | Publication date |
|---|---|
| CN107776401B (en) | 2024-05-17 |
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