CN206790902U - A kind of medium-and-large-sized farm tractor hydraulic rockshaft - Google Patents
A kind of medium-and-large-sized farm tractor hydraulic rockshaft Download PDFInfo
- Publication number
- CN206790902U CN206790902U CN201720622927.8U CN201720622927U CN206790902U CN 206790902 U CN206790902 U CN 206790902U CN 201720622927 U CN201720622927 U CN 201720622927U CN 206790902 U CN206790902 U CN 206790902U
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- China
- Prior art keywords
- hydraulic
- lift arm
- hydraulic jack
- housing
- valve assembly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000007423 decrease Effects 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 16
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Lifting Devices For Agricultural Implements (AREA)
Abstract
A kind of medium-and-large-sized farm tractor hydraulic rockshaft, lift shaft is rotatably equipped with housing, lift shaft is located at hull outside one end and connects outer lift arm, lift shaft is located at lift arm in case inside connection, enclosure interior installs hydraulic jack, piston rod in interior lift arm connection hydraulic jack, hydraulic jack connection hydraulic control system.The utility model is compact-sized, under the premise of proof strength, reduces weight to greatest extent；The state for risen by feedback linkage mechanism so as to control lift arm outside lifter to be in, be neutral, being declined, floating; control valve Mobile control valve bar after by feedback action; the outer lift arm of lifter declines automatically, plays protection agricultural machinery and implement and tractor hydraulic system effect, avoids energy consumption from wasting.
Description
Technical field
It the utility model is related to and be used for the dress for lifting farm implements in technical field of agricultural machinery, more particularly to farm tractor
Put.
Background technology
In order to which the farm implements being suspended on behind tractor are lifted or put down, hydraulic rockshaft to be installed at tractor rear portion.
Lifter is controlled the raising and lowering of farm implements by lift arm, and the motion of control lift arm, oil cylinder are moved back and forth by hydraulic jack
The direction of motion controlled by reversal valve.The shortcomings that this control mode is can not to realize neutral position control, otherwise farm implements are carried
Extreme higher position is raised to, otherwise farm implements drop to extreme lower position, it is impossible to farm implements is stopped at an arbitrary position.
A kind of lifter is disclosed in the Chinese utility model patent specification that Authorization Notice No. is CN202998796U
Scheme.The lifter includes housing, is rotatably equipped with housing by interior, the lifting connecting lever that outer lift arm is formed.Set in housing
There is hydraulic cylinder, there is piston in hydraulic cylinder, piston is connected by piston rod with lifting the interior lift arm of connecting lever.Hydraulic cylinder is by one four
The logical hand-operated direction valve control in position six, the reversal valve, which has, makes piston driving piston rod armed lever is increased, and declines and in hovering
Function.But the device lacks armed lever and declines auto-lock function, easily cause farm implements to decline too fast, security risk be present.In addition, use
Four six logical control valve controls, valve body is big, and cost is high.
Utility model content
In order to solve above mentioned problem existing for existing farm tractor hydraulic rockshaft, the utility model provides a kind of knot
The farm tractor hydraulic rockshaft that structure is compact, security performance is high.
Used technical scheme is the utility model to achieve the above object：A kind of medium-and-large-sized farm tractor hydraulic pressure carries
Device is risen, lift shaft 2 is rotatably equipped with housing 1, lift shaft 2 is located at the lateral ends of housing 1 and connects outer lift arm 3, lift shaft 2
In lift arm 4 in the connection of the inner side of housing 1, the inside of housing 1 installation hydraulic jack 19, interior lift arm 4 is connected in hydraulic jack 19
Piston rod 5, hydraulic jack 19 connect hydraulic control system；The oil inlet of the ontrol valve assembly 15 of hydraulic control system passes through pipeline
It is connected with pump 20, the outlet of ontrol valve assembly 15 is connected by pipeline with hydraulic jack 19, and the oil return opening of ontrol valve assembly 15 passes through
Return line is connected with fuel tank 22, and two parallel pipelines are provided between ontrol valve assembly 15 and hydraulic jack 19, wherein a pipe
Road is provided with check valve 17, and another pipeline is provided with decrease speed regulating valve 16, and ontrol valve assembly 15 includes hand-operated direction valve
14。
The one end of housing 1 installation force feedback support 7, force feedback support 7 connects control with linkage by force feedback bar 8
Valve assembly 15 processed, linkage include transverse link 10, longitudinal rod 11 and link assembly 12, force feedback bar 8 and transverse link
Adjustment bar 9 is provided between 10.
Pipeline between ontrol valve assembly 15 and hydraulic jack 19 is provided with safety valve 18.
The interior lift arm 4 is engaged with lift shaft 2 by key teeth, piston rod 5 by both ends spherical surface and piston 6, interior carry
The concave sphere groove for rising arm 4 is hinged.
Farm tractor hydraulic rockshaft of the present utility model, it is compact-sized, under the premise of proof strength, to greatest extent
Reduce weight；The shape for risen by feedback linkage mechanism so as to control lift arm outside lifter to be in, be neutral, being declined, floating
State, control valve Mobile control valve bar after by feedback action, the outer lift arm of lifter decline, play protection agricultural machinery and implement and draw automatically
Machine hydraulic system acts on, and avoids energy consumption from wasting.
Brief description of the drawings
Fig. 1 is the utility model farm tractor hydraulic rockshaft main view sectional structure chart.
Fig. 2 is the utility model farm tractor hydraulic rockshaft backsight structure chart.
Fig. 3 is the utility model farm tractor hydraulic rockshaft hydraulic principle figure.
In figure：1st, housing, 2, lift shaft, 3, outer lift arm, 4, interior lift arm, 5, piston rod, 6, piston, 7, force feedback branch
Frame, 8, force feedback bar, 9, adjustment bar, 10, transverse link, 11, longitudinal rod, 12, linkage, 13, control valve fixed mechanism,
14th, hand-operated direction valve, 15, ontrol valve assembly, 16, decrease speed regulating valve, 17, check valve, 18, safety valve, 19, hydraulic oil
Cylinder, 20, oil pump, 21, fuel tank, 22, valve component.
Embodiment
As shown in Figure 1-2, housing 1 is horizontally extending for farm tractor hydraulic rockshaft structure of the present utility model,
Hydraulic jack 19 is in tilted layout within the case 1 in the horizontal direction, and housing 1 uses casting streamline compact design, proof strength premise
Under, weight is reduced to greatest extent.Lift shaft 2 is rotatably equipped with housing 1, lift shaft 2 is located at the lateral ends of housing 1 and connects 2
Outer lift arm 3, using lifting arm configuration outside arranged side by side 2, stability is fought for.Lift shaft 2, which is located in the connection of the inner side of housing 1, to be carried
Arm 4 is risen, interior lift arm 4 and piston rod 5 are be hinged, and interior lift arm 4, which is realized, under the reciprocal promotion of hydraulic cylinder piston 6 swings, so as to
Driving lift shaft 2, outer lift arm 3 realize enhancing action, and hydraulic jack 19 connects hydraulic control system, realizes the lifting of lifter
Down maneuver and tilling depth control, and install valve component 22 on the housing of the rear side of hydraulic jack 19, valve component 22 includes lower reduction of speed
Spend regulating valve 16, check valve 17 and safety valve 18.
The one end of housing 1 installation force feedback support 7, force feedback support 7 connects lift shaft by force feedback bar 8 with linkage
2, linkage includes transverse link 10, longitudinal rod 11 and linkage 12, is provided between force feedback bar 8 and transverse link 10
Adjust bar 9.
Hydraulic control system principle as shown in figure 3, including ontrol valve assembly 15, decrease speed regulating valve 16, check valve 17,
Oil cylinder safety valve 18 etc., control valve oil inlet are connected by pipeline with pump 20, and control valve outlet is connected with oil cylinder 19, is filled on oil cylinder
There is safety valve 18, the oil return opening of ontrol valve assembly 15 is connected by return line with fuel tank 21, ontrol valve assembly 15 and hydraulic oil
Two parallel pipelines are provided between cylinder 19, wherein a pipeline is provided with check valve 17, another pipeline is provided with decrease speed
Regulating valve 16, ontrol valve assembly 15 include hand-operated direction valve 14.Set on pipeline between ontrol valve assembly 15 and hydraulic jack 19
There is safety valve 18.The reversing bar of hand-operated direction valve 14 is promoted to be opened to lifting position, the pressure oil of oil pump 20 by control valve 15
Oil cylinder 19 is proceeded directly to after check valve 17, hydraulic oil promotes piston to move forward, and lifter realizes vertical motion.Promotion is changed manually
To the reversing bar of valve 14 to down position, manual balanced valve is opened, the hydraulic oil in oil cylinder 19 by decrease speed regulating valve 16,
Control valve 15 is discharged to fuel tank, and lifter realizes down maneuver, and decrease speed is adjusted to preferable scope by speed-regulating valve 16.
When promotion control valve manual reverse of direction bar rises or falls midway stopping, control valve reversing bar returns to neutral position by spring, on
Rise or down maneuver stops therewith, lifter reaches hovering hold mode.The outer lift arm 3 of lifter is received during lifting or decline
To abnormal external impacts, the oil pressure in oil cylinder 19 is raised extremely suddenly, and when reaching 18 Opening pressure of safety valve, safety valve 18 is opened
Let out the safety for except abnormal rise pressure, ensureing oil cylinder 19 and hydraulic system.
In use, by operating hand-operated direction valve 14, hand-operated direction valve can be at respectively lifting position, neutral position, under
Decrease is put, floating position.When whole lifter is by external impacts, force feedback support 9 by force feedback bar 8, adjustment bar 9,
Transverse link 10, longitudinal rod 11 or linkage 12 feed back to external force on hydraulic control valve, and control valve is after by feedback action
Mobile control valve bar, the outer lift arm of lifter decline automatically, play protection agricultural machinery and implement and tractor hydraulic system effect, avoid energy
Consumption wastes.
Interior lift arm 4 is engaged with lift shaft 2 by key teeth, and when piston 6 drives piston rod 5 to move back and forth, piston rod 5 pushes away
Lift arm 4 rotates around lift shaft 2 in dynamic, under the drive of interior lift arm 4, piston rod 5 by both ends spherical surface and piston 6, interior carry
Rise be hinged rotate of the concave sphere groove of arm 4 and keep concentric stress, avoid inordinate wear occur between piston rod 5 and piston 6 and hydraulic cylinder,
Ensure the service life of hydraulic cylinder.
The utility model is described by embodiment, and those skilled in the art know, new not departing from this practicality
In the case of the spirit and scope of type, various changes or equivalence replacement can be carried out to these features and embodiment.In addition, at this
Under the teaching of utility model, these features and embodiment can be modified to adapt to particular situation and material without taking off
From spirit and scope of the present utility model.Therefore, the utility model is not limited to the particular embodiment disclosed, and is owned
The embodiment fallen into the range of claims hereof belongs to the scope of protection of the utility model.
Claims (4)
- A kind of 1. medium-and-large-sized farm tractor hydraulic rockshaft, it is characterised in that：Housing（1）On be rotatably equipped with lift shaft（2）, Lift shaft（2）Positioned at housing（1）Lateral ends connect outer lift arm（3）, lift shaft（2）Positioned at housing（1）Carried in the connection of inner side Rise arm（4）, housing（1）Inside installation hydraulic jack（19）, interior lift arm（4）Connect hydraulic jack（19）Interior piston rod（5）, Hydraulic jack（19）Connect hydraulic control system；The ontrol valve assembly of hydraulic control system（15）Oil inlet pass through pipeline and pump （20）Connection, ontrol valve assembly（15）Outlet passes through pipeline and hydraulic jack（19）Connection, ontrol valve assembly（15）Oil return opening Pass through return line and fuel tank（21）Connection, ontrol valve assembly（15）With hydraulic jack（19）Between be provided with two parallel pipelines, Wherein a pipeline is provided with check valve（17）, another pipeline be provided with decrease speed regulating valve（16）, ontrol valve assembly （15）Including hand-operated direction valve（14）.
- A kind of 2. medium-and-large-sized farm tractor hydraulic rockshaft according to claim 1, it is characterised in that：The housing （1）One end is installed by force feedback support（7）, force feedback support（7）Pass through force feedback bar（8）Ontrol valve assembly is connected with linkage （15）, linkage includes transverse link（10）, longitudinal rod（11）And linkage（12）, force feedback bar（8）Connect with horizontal Bar（10）Between be provided with adjustment bar（9）.
- A kind of 3. medium-and-large-sized farm tractor hydraulic rockshaft according to claim 1, it is characterised in that：Ontrol valve assembly （15）With hydraulic jack（19）Between pipeline be provided with safety valve（18）.
- A kind of 4. medium-and-large-sized farm tractor hydraulic rockshaft according to claim 1, it is characterised in that：The interior lifting Arm（4）With lift shaft（2）Engaged by key teeth, piston rod（5）Pass through both ends spherical surface and piston（6）, interior lift arm（4）It is recessed Ball slot is hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622927.8U CN206790902U (en) | 2017-06-01 | 2017-06-01 | A kind of medium-and-large-sized farm tractor hydraulic rockshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622927.8U CN206790902U (en) | 2017-06-01 | 2017-06-01 | A kind of medium-and-large-sized farm tractor hydraulic rockshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206790902U true CN206790902U (en) | 2017-12-26 |
Family
ID=60744561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720622927.8U Expired - Fee Related CN206790902U (en) | 2017-06-01 | 2017-06-01 | A kind of medium-and-large-sized farm tractor hydraulic rockshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206790902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982560A (en) * | 2017-06-01 | 2017-07-28 | 东洋重工机（大连）有限公司 | A kind of medium-and-large-sized farm tractor hydraulic rockshaft |
-
2017
- 2017-06-01 CN CN201720622927.8U patent/CN206790902U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982560A (en) * | 2017-06-01 | 2017-07-28 | 东洋重工机（大连）有限公司 | A kind of medium-and-large-sized farm tractor hydraulic rockshaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |