CN109578573A - V belt translation stepless speed change control system and control method - Google Patents
V belt translation stepless speed change control system and control method Download PDFInfo
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- CN109578573A CN109578573A CN201910027664.XA CN201910027664A CN109578573A CN 109578573 A CN109578573 A CN 109578573A CN 201910027664 A CN201910027664 A CN 201910027664A CN 109578573 A CN109578573 A CN 109578573A
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- 238000013519 translation Methods 0.000 title claims abstract description 33
- 230000008859 change Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 239000000523 sample Substances 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 38
- 238000010586 diagram Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
-
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
- F16H2061/0216—Calculation or estimation of post shift values for different gear ratios, e.g. by using engine performance tables
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
It includes controller, terminal display, speed probe, angular transducer, solenoid directional control valve, oil cylinder, driving pulley, counter wheel, driven pulley that the present invention, which provides a kind of V belt translation stepless speed change control system and control method, system,；User's setting speed is sent to controller by vision-control terminal；User's setting speed is converted to point of theory according to transmission ratio algorithm by controller, carries out revolving speed coarse adjustment with the surveyed actual angle comparison of angular transducer；When meeting coarse adjustment result, the velocity contrast of user's setting speed and velocity sensor detection is carried out revolving speed accurate adjustment by controller；The coarse adjustment and accurate adjustment of revolving speed are all to control oil cylinder stroke by control solenoid directional control valve, to change belt wheel transmission than realizing electrodeless variable-speed and meeting the requirement of user's setting speed；The present invention adjusts the transmission ratio of belt wheel by control oil cylinder stroke to realize electrodeless variable-speed control, has many advantages, such as that control structure is simple, and control precision is high.
Description
Technical field
The present invention relates to variable speed control fields, more particularly, to V belt translation stepless speed change control system and control
Method.
Background technique
It is stepless compared to liquid transmission variable speed, Electric Drive in current agricultural mechanical field V belt translation variable speed
Speed change has structure simple, and cost is relatively low, and easy to maintain, overload protection avoids other parts from destroying, and transmission distance farther out, passes
It the features such as dynamic steady, noise is small, is widely used in fields such as agricultural machinery.With modern technologies automation, information-based continuous
Development gradually increases transmission automation and required precision, and the automatic control development of V belt translation variable speed just seems especially
It is important.
Summary of the invention
It mainly solves the problems, such as, in self-propelled agricultural machinery, mostly uses step speed regulation greatly, in V belt translation variable speed
It is insufficient to automatically control aspect development, propose thus a kind of V belt translation stepless speed change control system having the advantages of simple structure and easy realization and
Control method.
According to an aspect of the present invention, a kind of V belt translation stepless speed change control system is provided, including controller, display are adjusted
Save terminal, speed probe, angular transducer, solenoid directional control valve, belt transmission system etc.；The speed probe, angle sensor
Device, electromagnetism changing phase valve and vision-control terminal are connect with the controller；The controller includes master controller, first from control
Device processed, second are from controller；Wherein master controller, first from controller, second from controller include microprocessor, CAN receive
Send out device, photoelectric isolating circuit, reset circuit, power circuit, crystal oscillating circuit, A/D conversion circuit；The master controller further includes depositing
Card storage, RS232 interface；Described second from controller further includes control relay circuit, and described first from controller, second from control
Device processed, master controller are communicated by CAN bus.
The belt transmission system includes: oil cylinder, driving pulley, counter wheel and driven pulley；The counter wheel is one
The kind special belt wheel of double flute, intermediate former can axially move, to change the reference diameter of two pulley grooves to change transmission ratio；
The speed probe be reflective photoelectric sensor, be fixed on the junction of rack and driven pulley, for real-time detection from
Movable belt pulley revolving speed, and the tach signal that will test is sent to described first from controller；The angular transducer is fixed on back
The hinged place of pivoted arm and rack, for detecting the angle between articulated arm and rack, and the angle signal that will test is sent to
Described second from controller；The solenoid directional control valve is three-position four-way electromagnetic directional valve, and is connected with oil cylinder, for controlling oil cylinder
Stroke does corresponding rotary motion to control counter wheel, to guarantee corresponding variable speed requirement；The vision-control is whole
End is connect with master controller, including window one and window two；The window one is between humans and machines interaction, setting driven belt rotation
Speed；The real-time tachometer value for the speed probe detection that the window two is sent for real-time display from master controller.
The master controller receives the reality of setting speed signal and the speed probe detection from vision-control terminal
Tach signal generates rotational speed regulation instruction for comparing user's setting speed value and speed probe detection tachometer value.
Described first connect from controller with speed probe, and first receives the signal that speed probe is sent from controller
And real-time tachometer value is converted to by algorithm, and tachometer value is transmitted to master controller by CAN bus.
Described second connect from controller with angular transducer, the second letter sent from controller receiving angle sensor
Number, and it is converted by algorithm the angle value of rack and articulated arm, with trigonometric function relationship, realize that oil cylinder is long by algorithm
The precise measurement of degree, according to oil cylinder initial length, available oil cylinder stroke finally obtains angle and secondary speed
Relationship.
Described second connect from controller with solenoid directional control valve, and receives the control from master controller by CAN bus
Signal controls the commutation and on-off of solenoid directional control valve, and then controls oil cylinder stroke.
According to another aspect of the present invention, a kind of V belt translation variable speed control method is provided, including, the display is adjusted
It saves terminal and sends the instruction of user's setting speed, user's setting speed that master controller receives display terminal transmission instructs and leads to
It crosses transmission ratio algorithm and is converted into corresponding point of theory, and point of theory is sent to second from controller；Described second from control
Device processed receives the point of theory sent from the master controller, and compares with angular transducer actual angle value detected,
Actual angle is judged whether in the error range in point of theory, if exceeding error range, described second from controller control
Electromagnetism valve regulation oil cylinder stroke processed, and then adjust actual angle, when actual angle meets the error range of point of theory, institute
The second adjustment from controller stopping to oil cylinder stroke is stated, and sends revolving speed accurate adjustment instruction to the master controller, is turned at this time
Fast coarse adjustment terminates.
The master controller, which is received, to be instructed from described second from the revolving speed accurate adjustment of controller, and by user's setting speed
Compared with value makes the difference with the actual speed value that speed probe detects, and judge whether rotating speed difference is more than preset value, when be more than set
When definite value, oil cylinder fine tuning instruction is generated, and oil cylinder fine tuning instruction is sent to described second from controller；Second control connects
It receives the oil cylinder from the master controller and finely tunes instruction, control solenoid valve carries out the fine tuning of oil cylinder stroke, realizes the essence of revolving speed
Really adjustment, when the difference of actual speed value and user's setting value is in range of set value, revolving speed accurate adjustment terminates, and V belt translation is stepless
Change control system enters waiting, when the variation of actual speed or user's setting speed exceeds setting range, repeats above-mentioned control
Process processed, until actual speed meets the requirement of user's setting speed.
The gearratio control algorithm is pairs of by rack and the transmission ratio of articulated arm angle and belt transmission system
Answer relational design；In the case where driving pulley invariablenes turning speed, variable speed is realized by changing transmission ratio, and transmission ratio and institute
Stating oil cylinder stroke has corresponding relationship, in the case where triangle strip length does not change, can be changed by changing oil cylinder stroke
Center between variable speed wheel away from, to change the reference diameter of two pulley groove of counter wheel, thus change driving pulley with it is driven
Transmission ratio between belt wheel, therefore acquisition oil cylinder stroke and belt wheel transmission pass through than relation curve according to trigonometric function relationship
Angular transducer detection angles can measure oil cylinder stroke, therefore angular transducer detection angles value and belt wheel transmission ratio indirectly
There is corresponding relationship, under conditions of driving wheel input speed is basically unchanged, the relationship of detection angles and secondary speed can be obtained
Curve, therefore in the case where determining secondary speed point of theory can be obtained by angle and secondary speed relation curve
Value.
The medicine have the advantages that this system can be within the allowable range according to user's setting speed, control system is voluntarily
Adjust driven pulley revolving speed；The actual angle value of actual angle value and user's setting speed conversion detected by angular transducer
Comparison can realize the first successive step of speed faster；Secondary speed can be obtained in real time by speed probe and is set with user
Revolving speed compares the accurate adjustment that revolving speed can be achieved；The structure of this system is relatively easy, and the length by controlling oil cylinder can be achieved with
Belt wheel variable speed, by velocity sensor can real-time monitoring revolving speed variation, control system can adjust in real time, ensure that belt wheel
The accuracy and stability of variable speed control.
Detailed description of the invention
Fig. 1 is V belt translation stepless speed change control system composition block diagram；
Fig. 2 is V belt translation stepless speed changing mechanism schematic diagram；
Fig. 3 is V belt translation stepless speed changing hydraulic schematic diagram；
Fig. 4 is V belt translation variable speed display terminal surface chart；
Fig. 5 is V belt translation stepless speed changing mechanism extreme position schematic diagram；
In attached drawing: driving pulley 1, oil cylinder 2, counter wheel 3, driven pulley 4, rack 5, hinged block 6, articulated arm 7, V-belt 8,
Speed probe 9, angular transducer 10, oil inlet 11, check valve 12, overflow valve 13, throttle valve 14, solenoid directional control valve 15, mistake
Filter 16, fuel tank 17.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail, implements below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Embodiment 1: it is illustrated in conjunction with Fig. 1 to Fig. 4.Fig. 1 is the V belt translation variable speed of one of the embodiment of the present invention
Control system architecture schematic diagram includes vision-control terminal, master controller, first as shown in Figure 1: from controller, second from control
Device processed, speed probe 9, angular transducer 10, solenoid directional control valve 15, oil cylinder 2 etc.；The vision-control terminal and main control phase
Even, the speed probe is connected with first from controller, and shown solenoid directional control valve 15, angular transducer 10 and second are from control
It is connected, the oil cylinder 2 is connected with solenoid directional control valve 15；The master controller, first include from controller from controller, second
Microprocessor, CAN transceiver, photoelectric isolating circuit, reset circuit, power circuit, crystal oscillating circuit, A/D conversion circuit；The master
Controller further includes storage card, RS232 interface；Described second from controller further include control relay circuit, described first from
Controller, second are communicated from controller, master controller by CAN bus.Fig. 2 is the signal of V belt translation stepless speed changing mechanism
Figure, as shown in Figure 2: V belt translation stepless speed variator system is mainly made of belt transmission system and rack 1；Wherein belt transmission system includes
Driving pulley 1, oil cylinder 2, counter wheel 3, driven pulley 4, V-belt 8 etc.；Counter wheel 3 is a kind of changeable reference diameter
Double-slot belt wheel, driven pulley 9, driving pulley 1, V-belt 8-1 and V-belt 8-2 positions and dimensions do not change, when
When the stroke of oil cylinder 2 changes, the ratio between the reference circle of two pulley grooves of counter wheel 3 will be changed, passed to change band
The transmission ratio of dynamic system, is finally reached the purpose of variable speed；Rack 5 and articulated arm 7 are hinged by hinged block 6, pass through detection
Angle between rack 5 and articulated arm 7 can measure indirectly the stroke of oil cylinder 2, therefore can be obtained between angle value and transmission ratio
Corresponding relationship.Fig. 3 is V belt translation stepless speed changing hydraulic schematic diagram, as shown in Figure 3: controlled device is oil cylinder 2, and executive component is
Solenoid directional control valve 15, wherein also included Hydraulic Elements have oil inlet 11, check valve 12, overflow valve 13, throttle valve 14, filter
16 and fuel tank 17；Hydraulic oil is come out from oil inlet 11 by check valve 12 and overflow valve 13 and throttle valve 14 by hydraulic pump
Stable lesser flow is obtained, the control of oil cylinder stroke is realized by solenoid directional control valve.Fig. 4 is aobvious for V belt translation variable speed
Show terminal interface figure, the vision-control terminal is connect with master controller, including window one and window two；The window one is used for
Between humans and machines interaction, sets driven pulley revolving speed, wherein the revolving speed set, within the scope of V belt translation variable speed, there are two types of turn
Fast setting form: the first is accurately in window input speed value, and second is similar simulation revolving speed push rod；Sliding is in window
Indicate that the stain of revolving speed is adjusted to suitable revolving speed between low speed, middling speed and high speed in mouth one；The window two is for real-time
Show that speed probe detects tachometer value, which is the actual speed value of driven pulley.
Embodiment 2: being illustrated in conjunction with Fig. 1 to Fig. 4, and the vision-control terminal sends the instruction of user's setting speed, main
User's setting speed that controller receives display terminal transmission, which instructs and passes through transmission ratio algorithm, is converted into corresponding theory
Angle, and point of theory is sent to second from controller；Described second receives from controller from master controller transmission
Point of theory, and with the actual angle value detected of angular transducer 9 compare, judge actual angle whether in point of theory
Error range in, if exceed error range, described second from controller control solenoid directional control valve 15 adjust oil cylinder stroke,
And then actual angle is adjusted, when actual angle meets the error range of point of theory, described second stops from controller to oil
The adjustment of 2 stroke of cylinder, and revolving speed accurate adjustment instruction is sent to the master controller, revolving speed coarse adjustment at this time terminates；The main control
Device, which is received, to be instructed from described second from the revolving speed accurate adjustment of controller, and user's setting speed value and speed probe are detected
Actual speed value make the difference and compare, and judge whether rotating speed difference is more than preset value, when being more than setting value, it is micro- to generate oil cylinder 2
Instruction is adjusted, and the fine tuning instruction of oil cylinder 2 is sent to described second from controller；Described second controls and receives from the main control
The oil cylinder of device finely tunes instruction, and control solenoid valve 15 carries out the fine tuning of oil cylinder stroke, realizes the accurate adjustment of revolving speed, when reality turns
Speed value with the difference of user's setting value in range of set value when, revolving speed accurate adjustment terminates, V belt translation stepless speed change control system into
Enter to wait, when the variation of actual speed or user's setting speed exceeds setting range, above-mentioned control process is repeated, until reality
Revolving speed meets the requirement of user's setting speed.
Embodiment 3: in conjunction with Fig. 2 and Fig. 5, Fig. 5 is V belt translation stepless speed changing mechanism extreme position schematic diagram, and wherein L1 is main
Center between movable belt pulley 1 and articulated arm 7 away from, L2 be between driven pulley 9 and articulated arm 7 center away from L3, L3 ' be main belt
Away from L4, L4, ' be center away from L5, L5 ' between driven pulley 4 and counter wheel is indicated at center between wheel 1 and counter wheel 3
Oil cylinder collapsing length；Wherein V-belt 8-1 connection driving pulley 1 and counter wheel 3, V-belt 8-2 connection driven pulley 4 is in
Between belt wheel 3, V-belt 8-1,8-2 length is constant；When length of oil cylinder L5 changes, corresponding center becomes away from L3, L4
Change, in the case that in V-belt, 8-1,8-2 length are constant, so that the reference diameter of 3 two slots of counter wheel changes, from
And change the transmission ratio that driving pulley 1 arrives driven pulley 4, realize the variable speed of belt wheel；Because of the variation range of length of oil cylinder L5
It is limited, therefore there are slewing ranges for the variable speed of V belt translation, when L5 is in minimum value, driven pulley has minimum speed, when
When L5 is in maximum value, driven pulley has maximum speed.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Any modifications, equivalent replacements, and improvements etc. done within mind and principle, should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of V belt translation stepless speed change control system, which is characterized in that including controller, vision-control terminal, revolution speed sensing
Device, angular transducer, solenoid directional control valve, belt transmission system；The speed probe, angular transducer, electromagnetism changing phase valve and aobvious
Show that adjusting terminal connect with the controller；The belt transmission system includes: oil cylinder, driving pulley, counter wheel and driven
Belt wheel；The counter wheel is a kind of double flute reference diameter variable pulley.
2. a kind of V belt translation stepless speed change control system according to claim 1, which is characterized in that the controller includes
Master controller, first are from controller, second from controller；Wherein master controller, first are wrapped from controller, second from controller
Include microprocessor, CAN transceiver, photoelectric isolating circuit, reset circuit, power circuit, crystal oscillating circuit, A/D conversion circuit；It is described
Master controller further includes storage card, RS232 interface；Described second from controller further include control relay circuit, described first
It is communicated from controller, second from controller, master controller by CAN bus.
3. a kind of V belt translation stepless speed change control system according to claim 1, which is characterized in that the speed probe
The tach signal hair for being fixed on the junction of rack and driven pulley, being used for real-time detection driven pulley revolving speed, and will test
It send to institute first from controller；The angular transducer is fixed on the hinged place of articulated arm and rack, for detect articulated arm with
Angle [alpha] between rack, and the angle signal that will test is sent to described second from controller；The solenoid directional control valve is three
Position four-way electromagnetic reversing valve, and be connected with oil cylinder, corresponding rotary motion is done for controlling oil cylinder stroke to control counter wheel；
The vision-control terminal is connect with controller, including window one and window two, and the window one is between humans and machines interaction, setting
Driven pulley revolving speed, the window two is for showing real-time tachometer value.
4. a kind of control method of V belt translation stepless speed change control system according to claim 1, which is characterized in that user
By revolving speed needed for the vision-control terminal profile, controller executes revolving speed coarse adjustment control after receiving user's setting speed
System, the revolving speed coarse adjustment control are to be detected by the way that user's setting speed is converted to corresponding point of theory with angular transducer
Actual angle comparison, adjust oil cylinder stroke until actual angle and meet the error range of point of theory, later controller into
The accurate adjustment of row revolving speed controls, and revolving speed accurate adjustment control is by the actual speed value pair of user's setting speed and speed probe detection
Than being finely adjusted control to oil cylinder stroke, until actual speed is in the teachings of user's setting speed, revolving speed accurate adjustment terminates
The stepless speed change control system of V belt translation enters waiting afterwards, when the variation of actual speed or user's setting speed exceeds setting range
When, above-mentioned control process is repeated, until actual speed meets the requirement of user's setting speed.
5. a kind of control method of V belt translation stepless speed change control system according to claim 4, which is characterized in that master control
Device processed receives user's setting speed and is converted to corresponding point of theory, and point of theory is sent to second from controller；?
When revolving speed accurate adjustment, the actual speed and user's setting speed that the master controller is sent first from controller are compared, and will be oily
Cylinder fine tuning instruction is sent to second from controller.
6. a kind of control method of V belt translation stepless speed change control system according to claim 4, which is characterized in that described
Second compares point of theory and angular transducer detection actual angle value from controller, and controls oil cylinder by solenoid directional control valve
Stroke, to meet V belt translation variable speed requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027664.XA CN109578573A (en) | 2019-01-11 | 2019-01-11 | V belt translation stepless speed change control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027664.XA CN109578573A (en) | 2019-01-11 | 2019-01-11 | V belt translation stepless speed change control system and control method |
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| Publication Number | Publication Date |
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| CN109578573A true CN109578573A (en) | 2019-04-05 |
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ID=65916251
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| CN201910027664.XA Pending CN109578573A (en) | 2019-01-11 | 2019-01-11 | V belt translation stepless speed change control system and control method |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB590963A (en) * | 1945-04-25 | 1947-08-01 | Leslie Hartridge | Improvements in and relating to variable speed gears |
| US5009127A (en) * | 1988-10-14 | 1991-04-23 | Fuji Jukogyo Kabushiki Kaisha | Transmission ratio control system for a continuously variable transmission |
| JPH07224914A (en) * | 1994-02-07 | 1995-08-22 | Nissan Motor Co Ltd | Line pressure controller for continuously variable transmission |
| JP2001263387A (en) * | 2000-03-22 | 2001-09-26 | Jatco Transtechnology Ltd | Control device for electromagnetic clutch |
| CN2552622Y (en) * | 2002-07-22 | 2003-05-28 | 青岛地恩地机电科技股份有限公司 | Stepless variable speed mechanism for drilling machine |
| US20050090367A1 (en) * | 2003-10-01 | 2005-04-28 | John Jonsson | V-belt continuously variable transmission for a vehicle engine |
| JP2010148435A (en) * | 2008-12-25 | 2010-07-08 | Iseki & Co Ltd | Combine harvester |
| CN205479310U (en) * | 2016-04-13 | 2016-08-17 | 三峡大学 | Novel manual governing operating mechanism of belt formula separation cone pulley buncher |
| CN205694416U (en) * | 2016-05-12 | 2016-11-23 | 农业部南京农业机械化研究所 | A kind of harvester threshing drum gear |
| CN209743565U (en) * | 2019-01-11 | 2019-12-06 | 新疆农业大学 | Belt drive stepless speed change control system |
-
2019
- 2019-01-11 CN CN201910027664.XA patent/CN109578573A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB590963A (en) * | 1945-04-25 | 1947-08-01 | Leslie Hartridge | Improvements in and relating to variable speed gears |
| US5009127A (en) * | 1988-10-14 | 1991-04-23 | Fuji Jukogyo Kabushiki Kaisha | Transmission ratio control system for a continuously variable transmission |
| JPH07224914A (en) * | 1994-02-07 | 1995-08-22 | Nissan Motor Co Ltd | Line pressure controller for continuously variable transmission |
| JP2001263387A (en) * | 2000-03-22 | 2001-09-26 | Jatco Transtechnology Ltd | Control device for electromagnetic clutch |
| CN2552622Y (en) * | 2002-07-22 | 2003-05-28 | 青岛地恩地机电科技股份有限公司 | Stepless variable speed mechanism for drilling machine |
| US20050090367A1 (en) * | 2003-10-01 | 2005-04-28 | John Jonsson | V-belt continuously variable transmission for a vehicle engine |
| JP2010148435A (en) * | 2008-12-25 | 2010-07-08 | Iseki & Co Ltd | Combine harvester |
| CN205479310U (en) * | 2016-04-13 | 2016-08-17 | 三峡大学 | Novel manual governing operating mechanism of belt formula separation cone pulley buncher |
| CN205694416U (en) * | 2016-05-12 | 2016-11-23 | 农业部南京农业机械化研究所 | A kind of harvester threshing drum gear |
| CN209743565U (en) * | 2019-01-11 | 2019-12-06 | 新疆农业大学 | Belt drive stepless speed change control system |
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