CN109764107A - A variable speed transmission - Google Patents
A variable speed transmission Download PDFInfo
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- CN109764107A CN109764107A CN201910041114.3A CN201910041114A CN109764107A CN 109764107 A CN109764107 A CN 109764107A CN 201910041114 A CN201910041114 A CN 201910041114A CN 109764107 A CN109764107 A CN 109764107A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 92
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims description 81
- 239000007788 liquid Substances 0.000 claims description 12
- 230000009184 walking Effects 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000008450 motivation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The present invention provides a kind of variable speed drives, including input link, hydraulic power transmission assembly, machine driving assembly, output link and clutch pack, the input link is connect with hydraulic power transmission assembly, hydraulic power transmission assembly and input link are connected to machine driving assembly respectively by the clutch pack, and machine driving assembly is connect by the clutch pack with output link；The clutch pack provides the transmission ratio for being continuously advanced or retreating between input link and output link.By adjusting engagement of the discharge capacity of hydraulic power transmission assembly than controlling the clutch pack with selectivity, providing the kind of drive moved forward or back between input link and output link includes: hydrostatic transmissions, Hydrostatic-mechanical Transmission and machine driving.The present invention can switch between three kinds of transmissions, and mainly provide the variable speed drive of walking function in low-grade location offer walking and operation function, high tap position.
Description
Technical field
The present invention relates to speed changer field, in particular to a kind of variable speed drive.
Background technique
Agri-vehicle wants variable speed drive commonly used in farm work and two kinds of hauling operation different operating conditions
It asks and is slightly different.Hydraulic drive has the characteristics that flexibility, and suitable for the farm work of operating condition complexity, but efficiency is relatively low；It is mechanical
Transmission has the characteristics that variable speed that is high-efficient, but being difficult to realize power failure-free, is suitable for the preferable operating condition of road conditions.
Either farm work or hauling operation generally requires output power and drives other devices, and walks and operation
Parallel often to carry out in low-grade location, high tap position is suitable for purposes of walking more.
Hydraulicdriven multi gear position can meet the requirement of starting heavy load and operation flexibility, the multi gear of machine liquid Composite Transmission
Position can meet the job requirements of different operating conditions, and mechanically operated multi gear position can meet operation and transition operating condition speed difference is biggish wants
It asks.It selects different work patterns to meet different walkings while require, selects output power to drive other mechanisms, realize speed change
The unification of system walking and power output is the hot spot of current variable ratio drive system research.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of variable speed drives, can be in hydraulic drive, liquid
It is switched between press mechanical pressing transmission and machine driving, and mainly provides row in low-grade location offer walking and operation function, high tap position
Walk the variable speed drive of function.
The present invention achieves the above technical objects by the following technical means.
A kind of variable speed drive, including input link, hydraulic power transmission assembly, machine driving assembly, output link
And clutch pack, the input link are connect with hydraulic power transmission assembly, the clutch pack is respectively by hydraulic power
Drive assembly and input link are connected to machine driving assembly, and the clutch pack connects machine driving assembly and output link
It connects；The clutch pack provides the transmission ratio for being continuously advanced or retreating between input link and output link.
Further, by adjusting the discharge capacity of hydraulic power transmission assembly than controlling connecing for the clutch pack with selectivity
It closes, providing the kind of drive moved forward or back between input link and output link includes: hydrostatic transmissions, machine driving and liquid
Press mechanical pressing transmission.
Further, the clutch pack includes the 6th clutch and several shift clutch, and the 6th clutch is used
Hydraulic power transmission assembly is connected to machine driving assembly to rotate jointly in selectivity；Several shift clutch are used
Machine driving assembly is connected to output link to rotate jointly in selectivity；By the row for adjusting hydraulic power transmission assembly
Any engagement for measuring than and controlling the 6th clutch and several shift clutch, is provided between input link and output link
The hydrostatic transmissions of forward or backward；
The shift clutch includes first clutch, second clutch, third clutch and the 4th clutch, engagement the
Six clutches and first clutch, the 6th clutch of engagement and second clutch, connect engagement the 6th clutch and third clutch
Close the 6th clutch and the 4th clutch provide respectively moved forward or back between input link and output link it is respectively different quiet
Hydraulic drive.
Further, the clutch pack further includes the 5th clutch, and the 5th clutch will be defeated for selectivity
Enter component and is connected to machine driving assembly to rotate jointly；By adjusting described in discharge capacity ratio and the control of hydraulic power transmission assembly
Any engagement of 5th clutch and several shift clutch provides the mechanical biography advanced between input link and output link
It is dynamic；
Engage the 5th clutch and first clutch, the 5th clutch of engagement and second clutch, the 5th clutch of engagement
And third clutch, the 5th clutch of engagement and the 4th clutch provide advance respectively between input link and output link respectively
Different machine driving.
Further, by adjusting the discharge capacity ratio of hydraulic power transmission assembly and controlling the 6th clutch and the 5th clutch
Any engagement of device and several shift clutch, provides the Hydrostatic-mechanical Transmission to advance between input link and output link；
Further, the machine driving assembly includes that hauling operation drive assembly, farm work drive assembly and power pass
Motivation structure；Hauling operation drive assembly and farm work drive assembly are connected to output link respectively by the clutch pack；
The power drive mechanism is connect with farm work drive assembly；The input link and hydraulic power transmission assembly respectively with it is dynamic
Force transmission mechanism connection；The input link is connect with hauling operation drive assembly respectively with hydraulic power transmission assembly.
Further, the hauling operation drive assembly includes III shelves gear pair, third clutch, the 4th clutch and IV grade
Gear pair；The third clutch is connected input link or hydraulic power transmission assembly by III shelves gear pair for selectivity
Output link is connected to rotate jointly；4th clutch is for selectivity by input link or hydraulic power transmission assembly
Output link is connected to by IV shelves gear pair to rotate jointly.
Further, the power drive mechanism includes intermediate underdrive gear, idle pulley, power output shaft idle pulley, the 7th clutch
And power output shaft；The intermediate underdrive gear is engaged with idle pulley, and the idle pulley is engaged with power output shaft idle pulley, the jackshaft
Idle pulley, idle pulley, power output shaft idle pulley are used to for input link being connected to power output shaft, and the 7th clutch is for selecting
The axis idle pulley that outputs power of property is connected to power output shaft to rotate jointly；The power output shaft and farm work transmission are total
At connection；
The farm work drive assembly includes I shelves gear pair, first clutch, second clutch and II shelves gear pair；
Output power axis of the first clutch for selectivity is connected to output link by I shelves gear pair to rotate jointly；
Output power axis of the second clutch for selectivity is connected to output link by II shelves gear pair to rotate jointly.
It further, further include power dividing planetary gear mechanism, the input link and power dividing planetary gear mechanism
Connection, the power dividing planetary gear mechanism are connect with hydraulic power transmission assembly and machine driving assembly respectively.
It further, further include power flow concentration planetary gear mechanism, the input link and hydraulic power transmission assembly difference
It is connect with power flow concentration planetary gear mechanism, the power dividing planetary gear mechanism is connect with machine driving assembly.
The beneficial effects of the present invention are:
1. variable speed drive of the present invention, transmission device can be in hydraulic drive, Hydrostatic-mechanical Transmission and mechanical biography
Free switching is carried out between dynamic, and the various kinds of drive there are multiple gears available.
2. variable speed drive of the present invention, the distribution when different stalls switch of each clutch is more uniform, improves
Service life.
3. variable speed drive of the present invention, can be before guaranteeing walking function under each gear of each transmission mode
It puts, output power drives other mechanisms.
Detailed description of the invention
Fig. 1 is variable speed drive schematic diagram of the present invention.
Fig. 2 is power dividing machine liquid compound gearing schematic diagram of the present invention.
Fig. 3 is power flow concentration machine liquid compound gearing schematic diagram of the present invention.
In figure:
1- hydraulic power transmission assembly；1-1- hydraulic power input gear pair；1-2- variable pump；1-3- fixed displacement motor；1-
4- hydraulic power output gear wheel set；The 6th clutch of 1-5-；2- hauling operation drive assembly；III shelves gear pair of 2-1-；2-2-
Three clutches；The 4th clutch of 2-3-；IV shelves gear pair of 2-4-；3- power drive mechanism；3-1- intermediate underdrive gear；3-2- is lazy
Wheel；3-3- power output shaft idle pulley；The 7th clutch of 3-4-；3-5- power output shaft；4- farm work drive assembly；4-1-Ⅰ
Shelves gear pair；4-2- first clutch；4-3- second clutch；II shelves gear pair of 4-4-；5- input mechanism；5-1- input shaft；
The 5th clutch of 5-2-；5-3- jackshaft；6- output shaft；7- power dividing planetary gear mechanism；The 8th clutch of 7-1-；7-2-
Power dividing mechanism sun gear；7-3- power dividing mechanism planet carrier；7-4- power dividing mechanism gear ring；8- power flow concentration planet
Gear mechanism；The 9th clutch of 8-1-；8-2- power flow concentration mechanism sun gear；8-3- power flow concentration mechanism planet carrier；8-4- function
Rate confluence mechanism gear ring.
Specific embodiment
Present invention will be further explained with reference to the attached drawings and specific examples, but protection scope of the present invention is simultaneously
It is without being limited thereto.
As shown in Figure 1, variable speed drive of the present invention, including input mechanism 5, hydraulic power transmission assembly 1, fortune
Defeated operation drive assembly 2, farm work drive assembly 4, power drive mechanism 3 and output shaft 6；
Input mechanism 5 includes input shaft 5-1, the 5th clutch 5-2 and jackshaft 5-3, and the 5th clutch 5-2 is used for
Input shaft 5-1 is connected to jackshaft 5-3 to rotate jointly by selectivity；
The hydraulic power transmission assembly 1 include hydraulic power input gear secondary 1-1, variable pump 1-2, fixed displacement motor 1-3,
Hydraulic power output gear wheel set 1-4 and the 6th clutch 1-5；The variable pump 1-2 and input shaft 5-1 is inputted by hydraulic power
Gear pair 1-1 connection, the variable pump 1-2 is for providing fixed displacement motor 1-3 power；The fixed displacement motor 1-3 passes through hydraulic dynamic
Power output gear wheel set 1-4 is connect with jackshaft 5-3 to rotate jointly；The fixed displacement motor 1-3 and hydraulic power output gear wheel set
The 6th clutch 1-5 is equipped between 1-4.
Power drive mechanism 3 includes intermediate underdrive gear 3-1, idle pulley 3-2, power output shaft idle pulley 3-3, the 7th clutch 3-
4 and power output shaft 3-5.The intermediate underdrive gear 3-1 is mounted on jackshaft 5-3, the power output shaft idle pulley 3-3 installation
On power output shaft 3-5, engaged by intermediate underdrive gear 3-1 with idle pulley 3-2, idle pulley 3-2 and power output shaft idle pulley 3-3 are nibbled
It closes, it will be in the power transmission of jackshaft 5-3 to power output shaft 3-5；The intermediate underdrive gear 3-1 passes through the 7th clutch 3-4
It is connect with jackshaft 5-3.
It is connected between the output shaft 6 and jackshaft 5-3 by hauling operation drive assembly 2, the hauling operation transmission
Assembly 2 includes III shelves gear secondary 2-1, third clutch 2-2, the 4th clutch 2-3 and IV shelves gear secondary 2-4；The output shaft 6
It is connect respectively by III shelves gear secondary 2-1 and IV shelves gear secondary 2-4 between jackshaft 5-3, when in conjunction with third clutch 2-2
When, the output shaft 6 and jackshaft 5-3 is driven by III shelves gear secondary 2-1；When combining the 4th clutch 2-3, the output
Axis 6 and jackshaft 5-3 are driven by IV shelves gear secondary 2-4.
It is connected between the output shaft 6 and power output shaft 3-5 by farm work drive assembly 4, the farm work
Drive assembly 4 includes I shelves gear secondary 4-1, first clutch 4-2, second clutch 4-3 and II shelves gear secondary 4-4；The output
Respectively by I shelves gear secondary 4-1 and II shelves gear secondary 4-4 connection between axis 6 and power output shaft 3-5, when in conjunction with the first clutch
When device 4-2, the output shaft 6 and power output shaft 3-5 is driven by I shelves gear secondary 4-1；When combining second clutch 4-3,
The output shaft 6 and power output shaft 3-5 is driven by II shelves gear secondary 4-4.
By the discharge capacity ratio and selectivity control first clutch 4-2, second clutch that adjust hydraulic power transmission assembly 1
4-3, third clutch 2-2, the 4th clutch 2-3, the 5th clutch 5-2, the 6th clutch 1-5, the 7th clutch 3-4 connect
It closes, providing the kind of drive moved forward or back between input link and output link includes: hydrostatic transmissions and machine driving.Such as
Shown in table 1, illustrate below specific as follows:
When engaging the 6th clutch 1-5, the 7th clutch 3-4 and first clutch 4-2, it is denoted as I grade of hydrostatic transmissions；It is defeated
Enter axis 5-1 power through hydraulic power input gear secondary 1-1, variable pump 1-2, fixed displacement motor 1-3, hydraulic power output gear wheel set 1-
4 and jackshaft 5-3, is transmitted to power drive mechanism 3, and a part of power drives equipment, another portion through power output shaft 3-5
Sub-power is exported through I shelves gear secondary 4-1 from output shaft 6.
When engaging the 6th clutch 1-5, the 7th clutch 3-4 and second clutch 4-3, it is denoted as II grade of hydrostatic transmissions；
Input shaft 5-1 power is through hydraulic power input gear secondary 1-1, variable pump 1-2, fixed displacement motor 1-3, hydraulic power output gear wheel set
1-4 and jackshaft 5-3 is transmitted to power drive mechanism 3, and a part of power drives equipment through power output shaft 3-5, another
Partial power is exported through II shelves gear secondary 4-3 from output shaft 6.
When engaging the 6th clutch 1-5 and third clutch 2-2, it is denoted as III grade of hydrostatic transmissions；Input shaft 5-1 power warp
Hydraulic power input gear secondary 1-1, variable pump 1-2, fixed displacement motor 1-3, hydraulic power output gear wheel set 1-4, jackshaft 5-3 and
III shelves gear secondary 2-1, is transmitted to output shaft 6.If engaging the 7th clutch 3-4 at this time, partial power can be made to be transmitted to power biography
Motivation structure 3 drives equipment through power output shaft 3-5.
When engaging the 6th clutch 1-5 and the 4th clutch 2-3, it is denoted as IV grade of hydrostatic transmissions；Input shaft 5-1 power warp
Hydraulic power input gear secondary 1-1, variable pump 1-2, fixed displacement motor 1-3, hydraulic power output gear wheel set 1-4, jackshaft 5-3 and
IV shelves gear secondary 2-4, is transmitted to output shaft 6.If engaging the 7th clutch 3-4 at this time, partial power can be made to be transmitted to power biography
Motivation structure 3 drives equipment through power output shaft 3-5.
Hydrostatic transmissions mode moves forward and backward, and can be adjusted by controlling variable pumpage；I grade of hydrostatic transmissions
It is chiefly used in farm work with II grade of hydrostatic transmissions, automatically with power output；III grade of hydrostatic transmissions and hydrostatic transmissions IV
Shelves are chiefly used in hauling operation, general unpowered output；It can make hydrostatic by the 7th clutch 3-4 on control power output shaft
Pressure is driven III grade and IV grade of hydrostatic transmissions also exportable power.
Machine driving is fallen back and starting uses hydraulic drive, and four mechanical gear shifts can generate power interruption, but at this time
Transmission efficiency is higher than hydrostatic transmissions.
When retroversion, the 6th clutch 1-5 and third clutch 2-2 is engaged, and variable pump is required to operate in negative discharge capacity.It is defeated
Enter axis 5-1 power through hydraulic power input gear secondary 1-1, variable pump 1-2, fixed displacement motor 1-3, hydraulic power output gear wheel set 1-
4, jackshaft 5-3 and III shelves gear secondary 2-1, is transmitted to output shaft 6.
When starting, the 6th clutch 1-5 and the 4th clutch 2-3 is engaged, and variable pump is required to operate in positive discharge capacity.It is defeated
Enter axis 5-1 power through hydraulic power input gear secondary 1-1, variable pump 1-2, fixed displacement motor 1-3, hydraulic power output gear wheel set 1-
4, jackshaft 5-3 and IV shelves gear secondary 2-4, is transmitted to output shaft 6.
Due to fall back and start to walk be not used in working condition, therefore power output shaft 3-5 generally not output power, therefore do not select
Engage first clutch 4-2 and second clutch 4-3.Backward gear selection engagement third clutch 2-2, to control its speed regulation essence
Degree；Starting gear selection the 4th clutch 2-3 of engagement, to increase its speed adjustable range, convenient for being mutually connected with mechanical I grade.
When engaging the 5th clutch 5-2, the 7th clutch 3-4 and first clutch 4-2, it is denoted as I grade of machine driving.Input
The power of axis 5-1 passes through jackshaft 5-3, is transmitted to power drive mechanism 3, and a part of power drives work through power output shaft 3-5
Make device, another part power is exported through I shelves gear secondary 4-1 from output shaft 6.
When engaging the 5th clutch 5-2, the 7th clutch 3-4 and second clutch 4-3, it is denoted as II grade of machine driving.It is defeated
Enter the power of axis 5-1 by jackshaft 5-3, is transmitted to power drive mechanism 3, a part of power drives through power output shaft 3-5
Equipment, another part power are exported through II shelves gear secondary 4-4 from output shaft 6.
When engaging the 5th clutch 5-2 and third clutch 2-2, it is denoted as III grade of machine driving.The power of input shaft 5-1 passes through
Jackshaft 5-3 is crossed, III shelves gear secondary 2-1 is transmitted to, is exported from output shaft 6.If engaging the 7th clutch 3-4 at this time, portion can be made
Sub-power is transmitted to power drive mechanism 3, drives equipment through power output shaft 3-5.
When engaging the 5th clutch 5-2 and the 4th clutch 2-3, it is denoted as IV grade of machine driving.The power of input shaft 5-1 passes through
Jackshaft 5-3 is crossed, IV shelves gear secondary 2-4 is transmitted to, is exported from output shaft 6.If engaging the 7th clutch 3-4 at this time, portion can be made
Sub-power is transmitted to power drive mechanism 3, drives equipment through power output shaft 3-5.
The retroversion and starting of machine driving mode, using hydraulic drive；I grade and II grade of machine driving of machine driving is chiefly used in
Farm work, automatically with power output；III grade and IV grade of machine driving of machine driving is chiefly used in hauling operation, general unpowered
Output；It can make III grade of machine driving and IV grade of machine driving can also be defeated by the 7th clutch 3-4 on control power output shaft
Power out.
Hydrostatic transmissions are chiefly used in uneven road surface operating condition, increase system flexibility, but efficiency is relatively low；Machine driving is chiefly used in
Smooth road surface, efficiency is higher, but is difficult to realize power failure-free shift.
The operation schematic diagram of variable speed drive main element shown in Fig. 1 is as shown in table 1.
1 main element operation schematic diagram of table
Note: " ▲ " indicates clutch engagement.
In table, C1Indicate first clutch 4-2；C2Indicate second clutch 4-3；C3Indicate third clutch 2-2；C4Table
Show the 4th clutch 2-3；C5Indicate the 5th clutch 5-2；C6Indicate the 6th clutch 1-5；C7Indicate the 7th clutch 3-4.
As shown in Fig. 2, power dividing planet can be increased at hydraulic power input gear secondary 1-1 to realize Composite Transmission
Gear mechanism 7 cut transmission system can in three kinds of hydraulic drive, Hydrostatic-mechanical Transmission and machine driving kinds of drive
It changes, and every kind of transmission mode has a variety of gears available.The power dividing planetary gear mechanism 7 includes the 8th clutch
7-1, power dividing mechanism sun gear 7-2, power dividing mechanism planet 7-3 and power dividing mechanism gear ring 7-4；The input shaft
5-1 upper installation power diversion mechanism planet 7-3, the power dividing mechanism sun gear 7-2, power dividing mechanism planet 7-3 and
Power dividing mechanism gear ring 7-4 constitutes planetary gear train, the power dividing mechanism sun gear 7-2 and hydraulic power input gear
The input terminal of secondary 1-1 is integrated, and the 8th clutch 7-1 is for selectivity by power dividing mechanism planet 7-3 and power
The 7-4 connection of diversion mechanism gear ring, the power dividing mechanism gear ring 7-4 are connect by the 5th clutch 5-2 with jackshaft 5-3.
The liquid compound gearing operational mode of power dividing machine shown in Fig. 2 is as shown in table 2.
2 power dividing Composite Transmission input mechanism element state of table
In table, C8Indicate the 8th clutch 7-1.
It is hydraulic drive mode, the power of input shaft 5-1 is through function when engaging the 6th clutch 1-5 and the 8th clutch 7-1
Rate shunts planetary gear mechanism 7, is input to hydraulic power transmission assembly 1 from its sun gear 7-2, selectively engages hauling operation biography
The third clutch 2-2 and the 4th clutch 2-3 of dynamic assembly 2 or the first clutch 4-2 of farm work drive assembly 4 and the
Two clutch 4-3, realization hydraulic drive is in hauling operation or the application of farm work, and alternative engages the 7th clutch 3-
4, decide whether output power.
It is Hydrostatic-mechanical Transmission mode, the power of input shaft 5-1 when engaging the 5th clutch 5-2 and the 6th clutch 1-5
It shunts through power dividing planetary gear mechanism 7, is transmitted through power dividing planetary gear mechanism planet carrier 7-3 and its sun gear 7-2
To the power of hydraulic power transmission assembly 1 and power dividing planetary gear mechanism gear ring 7-4 in hydraulic power output gear wheel set 1-4
Place's confluence, the third clutch 2-2 and the 4th clutch 2-3 or farm work for selectively engaging hauling operation drive assembly 2 are passed
The first clutch 4-2 and second clutch 4-3 of dynamic assembly 4 realize machine liquid Composite Transmission in hauling operation or farm work
Using, and the 7th clutch 3-4 of alternative engagement, decide whether output power.
It is machine driving mode, the power of input shaft 5-1 is through function when engaging the 5th clutch 5-2 and the 8th clutch 7-1
Rate shunts planetary gear mechanism gear ring 7-4 and is output to hydraulic power output gear wheel set 1-4, and it is total to selectively engage hauling operation transmission
At 2 third clutch 2-2 and the 4th clutch 2-3 or farm work drive assembly 4 first clutch 4-2 and second from
Clutch 4-3, realization machine driving is in hauling operation or the application of farm work, and alternative engages the 7th clutch 3-4, certainly
It is fixed whether output power.
As shown in figure 3, power flow concentration planetary gear mechanism 8 can be increased at hydraulic power output gear wheel set 1-4.Hydraulic
Power output gear vice division chief increases power flow concentration planetary gear mechanism, makes transmission system can be in hydraulic drive, Hydrostatic-mechanical Transmission
It is switched over in three kinds of kinds of drive of machine driving, and every kind of transmission mode has a variety of gears available.The power
The planetary gear mechanism 8 that converges includes the 9th clutch 8-1, power flow concentration mechanism sun gear 8-2, power flow concentration mechanism planet carrier 8-
3 and power flow concentration mechanism gear ring 8-4, power flow concentration mechanism sun gear 8-2, power flow concentration mechanism planet carrier 8-3 and power flow concentration
Mechanism gear ring 8-4 constitutes planetary gear train, the output end and rate confluence mechanism gear ring 8- of the hydraulic power output gear wheel set 1-4
4 rotate jointly, and power flow concentration mechanism sun gear 8-2 is connect with jackshaft 5-3, the 9th clutch 8-1 selectivity by function
Rate confluence mechanism sun gear 8-2 is connect with power flow concentration mechanism planet carrier 8-3, the power flow concentration mechanism planet carrier 8-3 output
End is connected with the input of hauling operation drive assembly 2.The liquid compound gearing of power flow concentration machine shown in Fig. 3 operational mode such as 3 institute of table
Show.
3 power flow concentration Composite Transmission input mechanism element state of table
In table, C9Indicate the 9th clutch 8-1.
It is hydraulic drive mode, the power of input shaft 5-1 is through liquid when engaging the 6th clutch 1-5 and the 9th clutch 8-1
Pressure power drive assembly 1 and power flow concentration planetary gear mechanism 8 are transmitted to power flow concentration mechanism planet carrier 8-3, selectively engage
The first clutch of the third clutch 2-2 and the 4th clutch 2-3 or farm work drive assembly 4 of hauling operation drive assembly 2
Device 4-2 and second clutch 4-3, realize hydraulic drive in hauling operation or the application of farm work, and alternative engagement the
Seven clutch 3-4, decide whether output power.
It is Hydrostatic-mechanical Transmission mode, the power of input shaft 5-1 when engaging the 5th clutch 5-2 and the 6th clutch 1-5
It is shunted through hydraulic power input gear secondary 1-4, is transmitted to power flow concentration mechanism gear ring 8-4 through hydraulic power transmission assembly 1 all the way
On, be directly delivered on power flow concentration mechanism sun gear 8-2 through input shaft 5-1 all the way, through power flow concentration mechanism planet carrier 8-3 into
Row power flow concentration, the third clutch 2-2 and the 4th clutch 2-3 or field for selectively engaging hauling operation drive assembly 2 make
The first clutch 4-2 and second clutch 4-3 of industry drive assembly 4 realize that machine liquid Composite Transmission is made in hauling operation or field
The application of industry, and the 7th clutch 3-4 of alternative engagement, decide whether output power.
It is machine driving mode when engaging the 5th clutch 5-2 and the 9th clutch 8-1, the power of input shaft 5-1 is direct
It is transmitted on power flow concentration planetary gear mechanism 8, selectively engages the third clutch 2-2 and of hauling operation drive assembly 2
The first clutch 4-2 and second clutch 4-3 of four clutch 2-3 or farm work drive assembly 4 realize that machine driving exists
The application of hauling operation or farm work, and the 7th clutch 3-4 of alternative engagement, decide whether output power.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of variable speed drive, which is characterized in that total including input link, hydraulic power transmission assembly (1), machine driving
It is connect at, output link and clutch pack, the input link with hydraulic power transmission assembly (1), the clutch pack
Hydraulic power transmission assembly (1) and input link are connected to machine driving assembly respectively, the clutch pack passes machinery
Dynamic assembly is connect with output link；It is continuously advanced or retreats between the clutch pack offer input link and output link
Transmission ratio.
2. variable speed drive according to claim 1, which is characterized in that by adjusting hydraulic power transmission assembly (1)
Engagement of the discharge capacity than controlling the clutch pack with selectivity, provide and moved forward or back between input link and output link
The kind of drive include: hydrostatic transmissions, machine driving and Hydrostatic-mechanical Transmission.
3. variable speed drive according to claim 2, which is characterized in that the clutch pack includes the 6th clutch
(1-5) and several shift clutch, the 6th clutch (1-5) connect hydraulic power transmission assembly (1) for selectivity
Machine driving assembly is connected to rotate jointly；Machine driving assembly is connected to by several shift clutch for selectivity
Output link is to rotate jointly；By adjusting the discharge capacity ratio of hydraulic power transmission assembly (1) and controlling the 6th clutch (1-
5) with any engagement of several shift clutch, the hydrostatic biography moved forward or back between input link and output link is provided
It is dynamic；
The shift clutch include first clutch (4-2), second clutch (4-3), third clutch (2-2) and the 4th from
Clutch (2-3) engages the 6th clutch (1-5) and first clutch (4-2), the 6th clutch (1-5) of engagement and the second clutch
Device (4-3), the 6th clutch (1-5) of engagement and third clutch (2-2), the 6th clutch (1-5) of engagement and the 4th clutch
(2-3) is provided move forward or back respectively different hydrostatic transmissions between input link and output link respectively.
4. variable speed drive according to claim 2, which is characterized in that the clutch pack further includes the 5th clutch
Input link is connected to machine driving assembly for selectivity to revolve jointly by device (5-2), the 5th clutch (5-2)
Turn；By adjusting the discharge capacity ratio of hydraulic power transmission assembly (1) and controlling the 5th clutch (5-2) and several shift clutches
Any engagement of device, provides the machine driving advanced between input link and output link；
Engage the 5th clutch (5-2) and first clutch (4-2), the 5th clutch (5-2) of engagement and second clutch (4-
3) the 5th clutch (5-2) and third clutch (2-2), the 5th clutch (5-2) of engagement and the 4th clutch (2-3), are engaged
Respectively different machine driving of advancing between input link and output link is provided respectively.
5. variable speed drive according to claim 2, which is characterized in that by adjusting hydraulic power transmission assembly (1)
Discharge capacity ratio and control the 6th clutch (1-5) and the 5th clutch (5-2) and several shift clutch any engagement,
The Hydrostatic-mechanical Transmission to advance between input link and output link is provided.
6. variable speed drive according to claim 1-5, which is characterized in that the machine driving assembly includes
Hauling operation drive assembly (2), farm work drive assembly (4) and power drive mechanism (3)；The clutch pack respectively will
Hauling operation drive assembly (2) and farm work drive assembly (4) are connected to output link；The power drive mechanism (3) with
Farm work drive assembly (4) connection；The input link and hydraulic power transmission assembly (1) respectively with power drive mechanism
(3) it connects；The input link is connect with hauling operation drive assembly (2) respectively with hydraulic power transmission assembly (1).
7. variable speed drive according to claim 6, which is characterized in that the hauling operation drive assembly (2) includes
III shelves gear pair (2-1), third clutch (2-2), the 4th clutch (2-3) and IV shelves gear are secondary (2-4)；The third clutch
Input link or hydraulic power transmission assembly (1) are connected to defeated by device (2-2) for selectivity by III shelves gear secondary (2-1)
Component is out to rotate jointly；4th clutch (2-3) is for selectivity by input link or hydraulic power transmission assembly
(1) output link is connected to rotate jointly by IV shelves gear secondary (2-4).
8. variable speed drive according to claim 6, which is characterized in that the power drive mechanism (3) includes centre
Axis idle pulley (3-1), idle pulley (3-2), power output shaft idle pulley (3-3), the 7th clutch (3-4) and power output shaft (3-5)；Institute
It states intermediate underdrive gear (3-1) to engage with idle pulley (3-2), the idle pulley (3-2) is engaged with power output shaft idle pulley (3-3), described
Intermediate underdrive gear (3-1), idle pulley (3-2), power output shaft idle pulley (3-3) are used to input link being connected to power output shaft
(3-5), output power axis idle pulley (3-3) of the 7th clutch (3-4) for selectivity are connected to power output shaft (3-
5) to rotate jointly；The power output shaft (3-5) connect with farm work drive assembly (4)；
The farm work drive assembly (4) includes I shelves gear pair (4-1), first clutch (4-2), second clutch (4-3)
It is secondary (4-4) with II shelves gear；Output power axis (3-5) of the first clutch (4-2) for selectivity passes through I shelves gear
Secondary (4-1) is connected to output link to rotate jointly；Output power axis of the second clutch (4-3) for selectivity
(3-5) is connected to output link by II shelves gear secondary (4-4) to rotate jointly.
9. variable speed drive according to claim 1, which is characterized in that further include power dividing planetary gear mechanism
(7), the input link is connect with power dividing planetary gear mechanism (7), and the power dividing planetary gear mechanism (7) is respectively
It is connect with hydraulic power transmission assembly (1) and machine driving assembly, in hydraulic drive, the transmission of machine liquid and three kinds of machine driving
It is switched in the kind of drive.
10. variable speed drive according to claim 1, which is characterized in that further include power flow concentration planetary gear mechanism
(8), the input link and hydraulic power transmission assembly (1) are connect with power flow concentration planetary gear mechanism (8) respectively, the function
Rate shunts planetary gear mechanism (7) and connect with machine driving assembly, in hydraulic drive, the transmission of machine liquid and three kinds of machine driving
It is switched in the kind of drive.
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| CN201910041114.3A CN109764107B (en) | 2019-01-16 | 2019-01-16 | A variable speed transmission |
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| CN201910041114.3A CN109764107B (en) | 2019-01-16 | 2019-01-16 | A variable speed transmission |
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