CN209324967U - A kind of tractor infinitely variable transmission of single planetary row confluence - Google Patents
A kind of tractor infinitely variable transmission of single planetary row confluence Download PDFInfo
- Publication number
- CN209324967U CN209324967U CN201920026224.8U CN201920026224U CN209324967U CN 209324967 U CN209324967 U CN 209324967U CN 201920026224 U CN201920026224 U CN 201920026224U CN 209324967 U CN209324967 U CN 209324967U
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- China
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- gear
- shaft
- bidirectional clutch
- motor drive
- sun wheel
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Abstract
The utility model relates to a kind of tractor infinitely variable transmissions of single planetary row confluence, including 2Z-X (B) planet row, pump control hydraulic motor, brake, three groups of bidirectional clutches and multiple groups gear pair.By introducing two gears in the gear drive between motor drive shaft and sun wheel shaft, the tractor infinitely variable transmission that single planetary row can be made to converge realizes non-equal difference Multi sectional stepless speed regulation；Power flow concentration is realized using 2Z-X (B) planet row with double-planetary gear, compared to traditional 2Z-X (A) planet row, the speed adjustable range of gearbox is bigger；It is designed using single conflux planetary gear set, overall structure is simple and compact, is conducive to cost control.
Description
Technical field
The utility model relates to the tractors that tractor infinitely variable transmission field more particularly to a kind of single planetary row are converged
Infinitely variable transmission.
Background technique
Hydraulic power shunts infinitely variable transmission has mechanically operated high efficiency and hydraulic drive bearing capacity strong simultaneously
Feature is ideal tractor stepless speed regulating method.Infinitely variable transmission is shunted in large-scale stepless tune in order to improve hydraulic power
Transmission efficiency when fast generallyd use Multi sectional design method in the past, but Multi sectional scheme is limited by complexity in industrialization
Structure and high manufacturing cost, enforcement difficulty are larger；And if designed using single planetary row, though can simplify structure, reduce at
This, but speed adjustable range is limited, and cannot obtain the differentials section transmission ratio configuration result such as non-, it is difficult to meet tractor traveling institute
The differentials transmission ratio configuration requirement such as non-needed.
Summary of the invention
In view of the shortcomings of the prior art, the utility model provides a kind of single planetary row confluence tractor infinitely variable transmission,
Not only the speed adjustable range of gearbox is big, but also overall structure is simple and compact, is conducive to cost control.
The utility model is achieved by the following technical solution, and provides a kind of stepless change of tractor of single planetary row confluence
Fast case, including power input shaft, pump control hydraulic motor, 2Z-X(B) planet row and power output shaft, on the power input shaft according to
It is secondary to be equipped with L sections of I gears, H sections of I gears and pump shaft I gear；
The pump shaft of the pump control hydraulic motor is equipped with the pump shaft II gear engaged with pump shaft I gear, pump control hydraulic motor
Motor drive shaft be equipped with motor drive shaft L-I gear and motor drive shaft H-I gear；
The 2Z-X(B) planet row includes double-planetary gear, the sun gear for being connected with sun wheel shaft and affixed rack gear axis
Gear ring, sun gear engages with the right gear of double-planetary gear, the left gear and gear ring internal messing of double-planetary gear, duplex planet
Wheel is connect by planet carrier with planet carrier shaft, and gear ring axis, sun wheel shaft and planet carrier shaft are coaxial, and gear ring axle position is in 2Z-X (B) row
The left side of star row, sun wheel shaft and planet carrier shaft are located at the right side of 2Z-X (B) planet row, and sun wheel shaft passes axially through planet
Frame axis, gear ring are connect by Y sections of brakes with gear box；
The gear ring axis by section selects bidirectional clutch to be connected with the L section II gear engaged with L sections of I gears and H sections of I teeth
Take turns the H section II gear of engagement；
The sun wheel shaft is connected with the motor drive shaft L- engaged with motor drive shaft L-I gear by sun wheel shaft bidirectional clutch
II gear, the motor drive shaft H-II gear engaged with motor drive shaft H-I gear；
The planet carrier shaft, which is equipped with, falls back gear I gear and forward gear I gear, falls back gear I gear engagement and is connected with idle pulley；
The power output shaft is connected with the retroversion engaged with idle pulley by the bidirectional clutch that commutates and keeps off II gear and advance
Keep off the forward gear II gear of I gear engagement.
This programme is by introducing two gears in the gear drive between motor drive shaft and sun wheel shaft, respectively by sun gear
The left-interface or right side Engagement Control of axis bidirectional clutch, the tractor infinitely variable transmission that single planetary row can be made to converge realize phase
The non-equal difference configuration of adjacent two stepless speed regulation section transmission ratio adjustable ranges, so as to improve the traveling and accelerating ability of tractor,
That is: " difference of the maxima and minima of H sections of transmission ratios " can be greater than " difference of the maxima and minima of L sections of transmission ratios ", from
And obtain good tractor traveling and accelerating ability.
On the contrary, if no between motor drive shaft and sun wheel shaft set gear, but pass through a pair of of gear engagement company always
Connect motor drive shaft and sun wheel shaft, or directly adopt split type pump control hydraulic motor, make motor drive shaft direct-connected with sun wheel shaft, then without
By how configuring each gear pair transmission ratio, " difference of the maxima and minima of H sections of transmission ratios " is necessarily equal to " L sections of transmission ratios
The difference of maxima and minima ", the equal difference configuration of this each section of transmission ratio are highly detrimental to tractor traveling and accelerate.
As optimization, it is double that described section, which is selected bidirectional clutch, sun wheel shaft bidirectional clutch and commutation bidirectional clutch,
To wet clutch.This prioritization scheme is both able to satisfy required function using wet clutch, and power transmitting is smooth, uses the longevity
Life length, failure rate is low, is more suitable for for tractor.
As optimization, described section is selected bidirectional clutch, sun wheel shaft bidirectional clutch and commutation bidirectional clutch to wrap respectively
Include the wet clutch of two self contained functions.This prioritization scheme is by selecting bidirectional clutch, sun wheel shaft bidirectional clutch for section
It is replaced respectively by the wet clutch of two self contained functions with commutation bidirectional clutch, not only reduces manufacture difficulty, Er Qiejian
It repairs also more convenient.
As optimization, the pump control hydraulic motor is integral type pump control hydraulic motor.This prioritization scheme avoids motor drive shaft
It is direct-connected with sun wheel shaft, improve the traveling and accelerating ability of tractor.
A kind of application method of the tractor infinitely variable transmission of single planetary row confluence, includes the following steps:
1, tractor starting operating condition
Preparation before tractor starting: Y sections of brake engagements, section select bidirectional clutch to be in middle position, and sun wheel shaft is two-way
Clutch left-interface, while right side separates, engagement on the right side of commutation bidirectional clutch, while left side separates；
Tractor starting and Y sections of stepless speed regulations: being set as 0 for the pumpage of pump control hydraulic motor, then start engine, into
And power input shaft is driven to rotate, at this point, the revolving speed of motor drive shaft and power output shaft is 0, tractor remains static；Gradually
The revolving speed of the pumpage of raising pump control hydraulic motor, motor drive shaft and power output shaft steps up, and tractor starts to start to walk and add
Speed, gearbox work in that there is no the hydrostatic stepless speed regulation modes of the Y of power dividing section；
2, hydraulic power shunting section adjusts the speed operating condition
L sections of stepless speed regulations: after tractor starting, section selects bidirectional clutch left-interface, while right side separates, while making Y
Section brake separation, and by the rapid opposite direction of the pumpage of pump control hydraulic motor before section is selected and is fully engaged on the left of bidirectional clutch
Change, until the revolving speed of power output shaft meets the equal quick changes section condition of " change section before and after transmission ratio identical "；After changing section, become
Fast case works in L sections of hydraulic power shunt modes, at this point, by the pumpage size and Orientation for adjusting pump control hydraulic motor, i.e.,
Revolving speed the continuously adjusting in L section of power output shaft can be achieved；
H sections of stepless speed regulations: after L sections of completions accelerate, section selects engagement on the right side of bidirectional clutch, while left side separates, and makes simultaneously
Engagement on the right side of sun wheel shaft bidirectional clutch, while left side separates, and will pump before section is selected and is fully engaged on the right side of bidirectional clutch
The rapid opposite direction of the pumpage of draining pressure motor changes, until the revolving speed of power output shaft meets " transmission ratio is identical before and after changing section "
Equal quick changes section condition；After changing section, gearbox works in H sections of hydraulic power shunt modes, by adjusting pump control hydraulic horse
Revolving speed the continuously adjusting in H section of power output shaft can be realized in the pumpage size and Orientation reached；
3, tractor falls back driving cycle: if you need to make tractor fall back traveling, only commutation need to be kept double before tractor starting
To clutch left-interface, while right side separates.
The utility model has the following beneficial effects:
1, double by sun wheel shaft respectively by introducing two gears in the gear drive between motor drive shaft and sun wheel shaft
To the left-interface or right side Engagement Control of clutch, the tractor infinitely variable transmission that single planetary row can be made to converge realizes adjacent two
The non-equal difference of a stepless speed regulation section transmission ratio adjustable range configures, so as to improve the traveling and accelerating ability of tractor, it may be assumed that " H
The difference of the maxima and minima of section transmission ratio " can be greater than " difference of the maxima and minima of L sections of transmission ratios ", to obtain
Good tractor traveling and accelerating ability.
2, power flow concentration is realized using 2Z-X (B) planet row with double-planetary gear, compared to traditional 2Z-X (A) row
Star row, the speed adjustable range of gearbox are bigger.
3, it is designed using single conflux planetary gear set, overall structure is simple and compact, is conducive to cost control.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
It is as shown in the figure:
1, power input shaft, 2, L sections of I gears, 3, H sections of I gears, 4, pump shaft II gear, 5, pump shaft I gear, 6, pump shaft, 7,
Pump control hydraulic motor, 8, motor drive shaft, 9, motor drive shaft L-I gear, 10, motor drive shaft H-I gear, 11, motor drive shaft H-II gear, 12,
Sun wheel shaft, 13, sun wheel shaft bidirectional clutch, 14, motor drive shaft L-II gear, 15, power output shaft, 16, forward gear II tooth
Wheel, 17, commutation bidirectional clutch, 18, retroversion gear II gear, 19, forward gear I gear, 20, planet carrier shaft, 21, retroversion gear I tooth
Wheel, 22, idle pulley, 23, double-planetary gear, 24, sun gear, 25, planet carrier, 26,2Z-X (B) planet row, 27, Y sections of brakes,
28, gear ring, 29, H sections of II gears, 30, section select bidirectional clutch, 31, L sections of II gears, 32, gear ring axis.
Specific embodiment
In order to clarify the technical characteristics of the invention, being illustrated below by specific embodiment to this programme.
A kind of tractor infinitely variable transmission of single planetary row confluence as shown in Figure 1, including power input shaft 1, pump control hydraulic
Motor 7, planet row 26 and power output shaft 15, power input shaft 1 are connected with tractor engine, power output shaft 15 and dilatory
Machine rear axle central driver gear pair is connected, and L sections of I gears 2, H sections of I gears 3 and pump shaft I gear are successively arranged on power input shaft 1
5。
The pump shaft 6 of pump control hydraulic motor 7 is equipped with the pump shaft II gear 4 engaged with pump shaft I gear 5, pump control hydraulic motor 7
Motor drive shaft 8 be equipped with motor drive shaft L-I gear 9 and motor drive shaft H-I gear 10.
2Z-X(B) planet row 26 includes double-planetary gear 23, is connected with the sun gear 24 of sun wheel shaft 12 and affixed with teeth
The gear ring 28 of axis 32 is enclosed, sun gear 24 is engaged with the right gear of double-planetary gear 23, the left gear and gear ring of double-planetary gear 23
28 internal messings, double-planetary gear 23 are connect by planet carrier 25 with planet carrier shaft 20, gear ring axis 32, sun wheel shaft 12 and planet carrier
Axis 20 is coaxial, and gear ring axis 32 is located at the left side of 2Z-X (B) planet row 26, and sun wheel shaft 12 and planet carrier shaft 20 are located at 2Z-X (B)
The right side of planet row 26, and sun wheel shaft 12 passes axially through planet carrier shaft 20, gear ring 28 passes through Y sections of brakes 27 and gearbox
Cabinet connection.
Gear ring axis 32 by section selects bidirectional clutch 30 to be connected with the L section II gear 31 engaged with L sections of I gears 2 and H sections of I
The H section II gear 29 that gear 3 engages.
Sun wheel shaft 12 is connected with the motor drive shaft engaged with motor drive shaft L-I gear 9 by sun wheel shaft bidirectional clutch 13
L-II gear 14, the motor drive shaft H-II gear 11 engaged with motor drive shaft H-I gear 10.
Planet carrier shaft 20, which is equipped with, falls back gear I gear 21 and forward gear I gear 19, falls back the gear engagement of I gear 21 and is connected with
Idle pulley 22.
Power output shaft 15 by the bidirectional clutch 17 that commutates be connected with retroversion engage with idle pulley 22 keep off II gear 18 and
The forward gear II gear 16 that forward gear I gear 19 engages.
As optimization, the section of the present embodiment select bidirectional clutch 30, sun wheel shaft bidirectional clutch 13 and commutation it is two-way from
Clutch 17 is two-way wet clutch.As optimization, section selects bidirectional clutch 30, sun wheel shaft bidirectional clutch 13 and commutation
Bidirectional clutch 17 respectively includes the wet clutch of two self contained functions.
As optimization, pump control hydraulic motor 7 is integral type pump control hydraulic motor.
The application method of the tractor infinitely variable transmission of above-mentioned single planetary row confluence, includes the following steps:
1, tractor starting operating condition:
Preparation before tractor starting: Y sections of brakes 27 engage, and section selects bidirectional clutch 30 to be in middle position, sun wheel shaft
13 left-interface of bidirectional clutch, while right side separates, and engages on the right side of the bidirectional clutch 17 that commutates, while left side separates.
Tractor starting and Y sections of stepless speed regulations: being set as 0 for the pumpage of pump control hydraulic motor 7, then start engine,
And then power input shaft 1 is driven to rotate.At this point, the revolving speed of motor drive shaft 8 and power output shaft 15 is 0, tractor is in static shape
State；Step up the pumpage of pump control hydraulic motor 7, the revolving speed of motor drive shaft 8 and power output shaft 15 steps up, and tractor is opened
Begin to start to walk simultaneously to accelerate, gearbox works in that there is no the hydrostatic stepless speed regulation modes of the Y of power dividing section.
2, hydraulic power shunting section adjusts the speed operating condition:
L sections of stepless speed regulations: after tractor starting, section selects 30 left-interface of bidirectional clutch, while right side separates, and makes simultaneously
Y sections of brakes 27 separate, and before section is selected and is fully engaged on the left of bidirectional clutch 30 that the pumpage of pump control hydraulic motor 7 is rapid
Opposite direction changes, until the revolving speed of power output shaft 15 meets the equal quick changes section condition of " change section before and after transmission ratio identical "；Change section
After, gearbox works in L sections of hydraulic power shunt modes, i.e. engine power is divided into two, and a part passes through pump shaft I tooth
Wheel 5, pump shaft II gear 4, pump shaft 6, pump control hydraulic motor 7, motor drive shaft 8, motor drive shaft L-I gear 9, motor drive shaft L-II gear 14,
Sun wheel shaft bidirectional clutch 13, sun wheel shaft 12 enter the sun gear 24 of 2Z-X (B) planet row 26, and another part passes through L sections of I
Gear 2, L sections of II gears 31, section select bidirectional clutch 30, gear ring axis 32 to enter the gear ring 28 of 2Z-X (B) planet row 26, two-way hair
After motivation power converges at 2Z-X (B) planet row 26, transmitted backward by planet carrier shaft 20.At this point, by adjusting pump draining
Revolving speed the continuously adjusting in L section of power output shaft 15 can be realized in the pumpage size and Orientation of pressure motor 7.
H sections of stepless speed regulations: after L sections of completions accelerate, section is selected to be engaged on the right side of bidirectional clutch 30, while left side separates, simultaneously
Make to engage on the right side of sun wheel shaft bidirectional clutch 13, while left side separates, and selects in section and be fully engaged on the right side of bidirectional clutch 30
The rapid opposite direction of the preceding pumpage by pump control hydraulic motor 7 changes until the revolving speed of power output shaft 15, which meets, " changes biography before and after section
It is dynamic than identical " equal quick changes section condition.After changing section, gearbox works in H sections of hydraulic power shunt modes, is pumped by adjusting
Revolving speed the continuously adjusting in H section of power output shaft 15 can be realized in the pumpage size and Orientation of draining pressure motor 7.
3, tractor falls back driving cycle: if you need to make tractor fall back traveling, only commutation need to be kept double before tractor starting
To 17 left-interface of clutch, while right side separates.
The present embodiment can make uniline star by introducing two gears in the gear drive between motor drive shaft and sun wheel shaft
The tractor infinitely variable transmission of row's confluence realizes non-equal difference Multi sectional stepless speed regulation；Using the 2Z-X (B) with double-planetary gear
Planet row realizes power flow concentration, and compared to traditional 2Z-X (A) planet row, the speed adjustable range of gearbox is bigger；Using single confluence
Planet row design, overall structure is simple and compact, is conducive to cost control.
Certainly, above description is also not limited to the example above, and technical characteristic of the utility model without description can lead to
It crosses or realizes that details are not described herein using the prior art；Above embodiments and attached drawing are merely to illustrate the technology of the utility model
Scheme is not limitations of the present invention, and the utility model is described in detail referring to preferred embodiment, this
Field it is to be appreciated by one skilled in the art that those skilled in the art institute in the essential scope of the utility model
The variations, modifications, additions or substitutions made without departure from the objective of the utility model, want by the right that also should belong to the utility model
Seek protection scope.
Claims (4)
1. a kind of tractor infinitely variable transmission of single planetary row confluence, it is characterised in that: including power input shaft (1), pump draining
Pressure motor (7), 2Z-X(B) planet row (26) and power output shaft (15), L sections of I teeth are successively arranged on the power input shaft (1)
Take turns (2), H sections of I gears (3) and pump shaft I gear (5)；
The pump shaft (6) of the pump control hydraulic motor (7) is equipped with the pump shaft II gear (4) engaged with pump shaft I gear (5), pump control
The motor drive shaft (8) of hydraulic motor (7) is equipped with motor drive shaft L-I gear (9) and motor drive shaft H-I gear (10)；
The 2Z-X(B) planet row (26) include double-planetary gear (23), the sun gear (24) for being connected with sun wheel shaft (12) and
The gear ring (28) of affixed rack gear axis (32), sun gear (24) are engaged with the right gear of double-planetary gear (23), double-planetary gear
(23) left gear and gear ring (28) internal messing, double-planetary gear (23) are connect by planet carrier (25) with planet carrier shaft (20),
Gear ring axis (32), sun wheel shaft (12) and planet carrier shaft (20) are coaxial, and sun wheel shaft (12) passes axially through planet carrier shaft
(20), gear ring (28) is connect by Y sections of brakes (27) with gear box；
The gear ring axis (32) by section selects bidirectional clutch (30) to be connected with the L section II gear engaged with L sections of I gears (2)
(31), the H section II gear (29) engaged with H sections of I gears (3)；
The sun wheel shaft (12) is connected with by sun wheel shaft bidirectional clutch (13) and is engaged with motor drive shaft L-I gear (9)
Motor drive shaft L-II gear (14), the motor drive shaft H-II gear (11) engaged with motor drive shaft H-I gear (10)；
The planet carrier shaft (20), which is equipped with, falls back gear I gear (21) and forward gear I gear (19), falls back gear I gear (21) and nibbles
Conjunction is connected with idle pulley (22)；
The power output shaft (15) is connected with the retroversion engaged with idle pulley (22) by commutation bidirectional clutch (17) and keeps off II tooth
Wheel (18), the forward gear II gear (16) engaged with forward gear I gear (19).
2. a kind of tractor infinitely variable transmission of single planetary row confluence according to claim 1, it is characterised in that: described section
Selecting bidirectional clutch (30), sun wheel shaft bidirectional clutch (13) and commutation bidirectional clutch (17) is two-way wet type clutch
Device.
3. a kind of tractor infinitely variable transmission of single planetary row confluence according to claim 2, it is characterised in that: described section
Bidirectional clutch (30), sun wheel shaft bidirectional clutch (13) and commutation bidirectional clutch (17) is selected to respectively include two independences dynamic
The wet clutch of work.
4. a kind of tractor infinitely variable transmission of single planetary row confluence according to claim 1, it is characterised in that: the pump
Draining pressure motor (7) is integral type pump control hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920026224.8U CN209324967U (en) | 2019-01-08 | 2019-01-08 | A kind of tractor infinitely variable transmission of single planetary row confluence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920026224.8U CN209324967U (en) | 2019-01-08 | 2019-01-08 | A kind of tractor infinitely variable transmission of single planetary row confluence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209324967U true CN209324967U (en) | 2019-08-30 |
Family
ID=67730804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920026224.8U Expired - Fee Related CN209324967U (en) | 2019-01-08 | 2019-01-08 | A kind of tractor infinitely variable transmission of single planetary row confluence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209324967U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458439A (en) * | 2019-01-08 | 2019-03-12 | 山东农业大学 | A kind of the tractor infinitely variable transmission and application method of single planetary row confluence |
| CN111396528A (en) * | 2020-03-18 | 2020-07-10 | 洛阳拖拉机研究所有限公司 | Multi-stage automatic stepless speed changing box for tractor |
-
2019
- 2019-01-08 CN CN201920026224.8U patent/CN209324967U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458439A (en) * | 2019-01-08 | 2019-03-12 | 山东农业大学 | A kind of the tractor infinitely variable transmission and application method of single planetary row confluence |
| CN109458439B (en) * | 2019-01-08 | 2024-03-05 | 山东农业大学 | Single-planet-row converging tractor stepless speed changing box and use method |
| CN111396528A (en) * | 2020-03-18 | 2020-07-10 | 洛阳拖拉机研究所有限公司 | Multi-stage automatic stepless speed changing box for tractor |
| CN111396528B (en) * | 2020-03-18 | 2024-04-09 | 洛阳拖拉机研究所有限公司 | Multi-section automatic stepless speed changing box for tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 Termination date: 20220108 |