CN107061391A - Automatic reverse is plowed machine hydraulic system - Google Patents
Automatic reverse is plowed machine hydraulic system Download PDFInfo
- Publication number
- CN107061391A CN107061391A CN201710316560.1A CN201710316560A CN107061391A CN 107061391 A CN107061391 A CN 107061391A CN 201710316560 A CN201710316560 A CN 201710316560A CN 107061391 A CN107061391 A CN 107061391A
- Authority
- CN
- China
- Prior art keywords
- valve
- way
- mouths
- pilot operated
- operated directional
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides a kind of automatic reverse and plowed machine hydraulic system, belongs to ploughing machine field.Hydraulic pressure pump inlet connects oil filter outlet, export P mouthfuls of the total check valve inlets of Lian and overflow valve, total one-way valved outlet connects P mouthfuls of the first and second two-position four-way pilot operated directional control valve, first T mouthfuls of two-position four-way pilot operated directional control valve connects fuel tank, A mouthfuls connect the second left position of two-position four-way pilot operated directional control valve, B mouthfuls connect the second right position of two-position four-way pilot operated directional control valve, second T mouthfuls of two-position four-way pilot operated directional control valve connects fuel tank, A mouthfuls and B mouthfuls connect motor two ends respectively, even the first left position of two-position four-way pilot operated directional control valve and the two-position two-way hydraulic control reversal valve control port of first A mouthfuls of sequence valve, P mouthfuls connect motor oil inlet, check valve inlet connects the first left position of two-position four-way pilot operated directional control valve, outlet connects motor oil inlet, second A mouthfuls of sequence valve connects the first right position of two-position four-way pilot operated directional control valve, P mouthfuls connect motor oil return opening, P mouthfuls of two-position two-way hydraulic control reversal valve connects A mouthfuls of the first right position of two-position four-way pilot operated directional control valve and the second sequence valve.
Description
Technical field
The present invention relates to ploughing machine technical field, more particularly to a kind of automatic reverse is plowed machine hydraulic system.
Background technology
Due in terms of history, idea and the technology, China's traditional agriculture machinery has very big compared with developed countries
Gap, far from the scientific and technological progress for adapting to agricultural.With the progress of science and technology, engineering goods automatization level is constantly carried
Height, increasingly advanced automatic technology is widely used in industrial circle, but agricultural automation technical merit is integrally also than relatively low.
In the last few years, the research of automation was gradually recognized by people, and the application being controlled automatically at agriculturally is increasingly taken seriously.
How more preferably faster in agricultural production, the Porous soil before sowing is the beginning of all production works,
Realize that the loose problem in soil turns into very significant research topic in ground.Although mechanical ploughing machine is to a certain extent in recent years
Efficiency of plowing is improved, but is limited to the reason for mechanical ploughing machine itself is designed, the soil effect smooth to large area is preferably, right
Used in patches such as mountain and hills limited.How to research and develop that a kind of use occasion is wide, small movable ploughing machine is into compeling
The problem of being essential to be solved.
The content of the invention
Large area is only applicable in order to solve mechanical ploughing machine at present to level land, patch is not suitable for, is applicable
The technical problem being limited in scope, the present invention provides a kind of automatic reverse and plowed machine hydraulic system.
The technical scheme is that：
A kind of automatic reverse is plowed machine hydraulic system, it include fuel tank, oil filter, hydraulic pump, total check valve, overflow valve,
First two-position four-way pilot operated directional control valve, the second two-position four-way pilot operated directional control valve, the first sequence valve, check valve, the second sequence valve, horse
Reach and two-position two-way hydraulic control reversal valve；
The import of the oil filter is connected with fuel tank, the outlet of oil filter and the import of hydraulic pump are connected, and hydraulic pump goes out
Mouth is connected with the import of total check valve and the P mouths of overflow valve respectively, and the T mouths of overflow valve are connected with fuel tank, the outlet of total check valve
It is connected respectively with the P mouths of the first two-position four-way pilot operated directional control valve and the P mouths of the second two-position four-way pilot operated directional control valve, the one or two four
The T mouths of logical pilot operated directional control valve are connected with fuel tank, A mouths and the second two-position four-way liquid controlled reversing of the first two-position four-way pilot operated directional control valve
The left position hydraulic fluid port connection of valve, the B mouths of the first two-position four-way pilot operated directional control valve and the right position oil of the second two-position four-way pilot operated directional control valve
Mouthful connection, T mouths of the second two-position four-way pilot operated directional control valve be connected with fuel tank, the A mouths of the second two-position four-way pilot operated directional control valve with B mouthfuls
The oil inlet and oil return opening of motor, the A mouths of the first sequence valve and the left position oil of the first two-position four-way pilot operated directional control valve are connected respectively
The control port of mouth and two-position two-way hydraulic control reversal valve is connected, and the P mouths of the first sequence valve are connected with the oil inlet of motor, check valve
Import be connected with the left position hydraulic fluid port of the first two-position four-way pilot operated directional control valve, the oil inlet of the outlet of check valve and motor is connected,
The A mouths of second sequence valve are connected with the right position hydraulic fluid port of the first two-position four-way pilot operated directional control valve, P mouths and the motor of the second sequence valve
Oil return opening is connected, and the P mouths and the right position hydraulic fluid port of the first two-position four-way pilot operated directional control valve and second of two-position two-way hydraulic control reversal valve are suitable
The A mouths connection of sequence valve, the A mouths of two-position two-way hydraulic control reversal valve are connected with fuel tank.
Alternatively, automatic reverse plows machine hydraulic system also including motor rotating forward overload protection arrangement and motor reversion overload
Protection device；
The motor, which rotates forward overload protection arrangement, includes the first control oil sources, the first two position, three-way electromagnetic change valve and first
Hydraulic control one-way valve；The A mouths of first hydraulic control one-way valve are connected with fuel tank, and the B mouths of the first hydraulic control one-way valve connect with the oil inlet of motor
Connect, the control port X of the first hydraulic control one-way valve is connected with the A mouths of the first two position, three-way electromagnetic change valve, the first two-position three way electricity
The P mouths of magnetic reversal valve are connected with the first control oil sources, and the T mouths of the first two position, three-way electromagnetic change valve are connected with fuel tank；
The motor reversion overload protection arrangement includes the second control oil sources, the second two position, three-way electromagnetic change valve and second
Hydraulic control one-way valve；The A mouths of second hydraulic control one-way valve are connected with fuel tank, and the B mouths of the second hydraulic control one-way valve connect with the oil return opening of motor
Connect, the control port X of the second hydraulic control one-way valve is connected with the A mouths of the second two position, three-way electromagnetic change valve, the second two-position three way electricity
The P mouths of magnetic reversal valve are connected with the second control oil sources, and the T mouths of the second two position, three-way electromagnetic change valve are connected with fuel tank.
The beneficial effects of the invention are as follows：
Coordinate the rotating forward for realizing ploughing machine by the second sequence valve and check valve, pass through the first sequence valve and bi-bit bi-pass liquid
Control reversal valve coordinates the reversion for realizing ploughing machine, so that the automatic reverse for the machine hydraulic system that plows is realized, simple in construction, automation
Degree is high.Hydraulic pump directly provides hydraulic oil by two-position four-way pilot operated directional control valve to motor, and it is less that fluid flows through device count, energy
Amount loss is low, and system effectiveness is high.In addition, hydraulic component species is few needed for the present invention, acknowledgment copy number is accordingly reduced, can be with one
Determine to reduce the cost of maintenance maintenance in degree.The present invention is simple to operate, has actual application value, is easy to promote the use of.
Therefore, compared with background technology, the present invention is with simple to operate, required human cost is low, automaticity is high, can be on mountain
The applications such as ground, hills, plot be small, the advantages of have wide range of applications and be easy to promote the use of.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
The machine hydraulic system as shown in figure 1, automatic reverse in the present embodiment is plowed, it includes fuel tank 1, oil filter 2, hydraulic pressure
Pump 3, total check valve 6, overflow valve 5, the first two-position four-way pilot operated directional control valve 8, the second two-position four-way pilot operated directional control valve 10, first are suitable
Sequence valve 11, check valve 12, the second sequence valve 24, motor 18 and two-position two-way hydraulic control reversal valve 25；The import of the oil filter 2 with
Fuel tank 1 is connected, and the outlet of oil filter 2 is connected with the import of hydraulic pump 3, the import exported respectively with total check valve 6 of hydraulic pump 3
Connected with the P mouths of overflow valve 5, the T mouths of overflow valve 5 are connected with fuel tank 1, the outlet of total check valve 6 respectively with the first two-position four-way
The P mouths of pilot operated directional control valve 8 and the P mouths of the second two-position four-way pilot operated directional control valve 10 are connected, the first two-position four-way pilot operated directional control valve 8
T mouthfuls are connected with fuel tank 1, the A mouths of the first two-position four-way pilot operated directional control valve 8 and the left position oil of the second two-position four-way pilot operated directional control valve 10
Mouth connection, the B mouths of the first two-position four-way pilot operated directional control valve 8 are connected with the right position hydraulic fluid port of the second two-position four-way pilot operated directional control valve 10,
The T mouths of second two-position four-way pilot operated directional control valve 10 are connected with fuel tank 1, and the A mouths of the second two-position four-way pilot operated directional control valve 10 divide with B mouthfuls
Not Lian Jie motor 18 oil inlet and oil return opening, the left position of the A mouths and the first two-position four-way pilot operated directional control valve 8 of the first sequence valve 11
The control port connection of hydraulic fluid port and two-position two-way hydraulic control reversal valve 25, the P mouths of the first sequence valve 11 connect with the oil inlet of motor 18
Connect, the import of check valve 12 is connected with the left position hydraulic fluid port of the first two-position four-way pilot operated directional control valve 8, the outlet of check valve 12 and motor
18 oil inlet connection, the A mouths of the second sequence valve 24 are connected with the right position hydraulic fluid port of the first two-position four-way pilot operated directional control valve 8, and second
The P mouths of sequence valve 24 are connected with the oil return opening of motor 18, P mouths and the first two-position four-way hydraulic control of two-position two-way hydraulic control reversal valve 25
The A mouths connection of the right position hydraulic fluid port and the second sequence valve 24 of reversal valve 8, A mouths and the fuel tank 1 of two-position two-way hydraulic control reversal valve 25 connect
Connect.
Alternatively, automatic reverse plows machine hydraulic system also including motor rotating forward overload protection arrangement and motor reversion overload
Protection device；
The motor, which rotates forward overload protection arrangement, includes the first control oil sources 14, the and of the first two position, three-way electromagnetic change valve 16
First hydraulic control one-way valve 17；The A mouths of first hydraulic control one-way valve 17 are connected with fuel tank 1, the B mouths and motor of the first hydraulic control one-way valve 17
The A mouths of 18 oil inlet connection, the control port X of the first hydraulic control one-way valve 17 and the first two position, three-way electromagnetic change valve 16 are even
Connect, the P mouths of the first two position, three-way electromagnetic change valve 16 are connected with the first control oil sources 14, the first two position, three-way electromagnetic change valve 16
T mouths be connected with fuel tank 1；
The motor reversion overload protection arrangement includes the second control oil sources 22, the and of the second two position, three-way electromagnetic change valve 20
Second hydraulic control one-way valve 19；The A mouths of second hydraulic control one-way valve 19 are connected with fuel tank 1, the B mouths and motor of the second hydraulic control one-way valve 19
The A mouths of 18 oil return opening connection, the control port X of the second hydraulic control one-way valve 19 and the second two position, three-way electromagnetic change valve 20 are even
Connect, the P mouths of the second two position, three-way electromagnetic change valve 20 are connected with the second control oil sources 22, the second two position, three-way electromagnetic change valve 20
T mouths be connected with fuel tank 1.
Specific work process of the present invention is as follows：As shown in figure 1, as the first two-position four-way pilot operated directional control valve 8 and the two or two
The right position of four-way pilot operated directional control valve 10 is also turned on, and now hydraulic oil passes through total check valve 6, the second two-position four-way pilot operated directional control valve
10 enter motor 18, realize that ploughing machine is rotated forward；During rotating forward, because soil porousness is different, needed for ploughing machine is rotated forward
When oil pressure reaches the set pressure of the first sequence valve 11, the first sequence valve 11 is opened, and control oil changes the first two-position four-way hydraulic control
Left position is switched to valve 8, subsequent second two-position four-way pilot operated directional control valve 10 also switches to left position, now hydraulic oil is by total unidirectional
Valve 6, the second two-position four-way pilot operated directional control valve 10 enter motor 18, realize that ploughing machine is inverted；Oil is controlled also to cause in the process
Two-position two-way hydraulic control reversal valve 25 switches to bottom so that the right-hand member of the first two-position four-way pilot operated directional control valve 8 control oil is smoothly returned to
Fuel tank 1.In Umklapp process, when oil pressure needed for ploughing machine reversion reaches the set pressure of the second sequence valve 24, the second order
Valve 24 is opened, and control oil makes the first two-position four-way pilot operated directional control valve 8 switch to right position, subsequent second two-position four-way pilot operated directional control valve
10 also switch to right position, and now hydraulic oil enters motor 18 by total check valve 6, the second two-position four-way pilot operated directional control valve 10, real
Existing ploughing machine is rotated forward.
Further, during rotating forward, when causing the exception rise of the charge oil pressure of motor 18 because there are abnormal conditions, the one or two
The 1YA of position three-way solenoid valve 16 obtains electric, in its upper access loop, and first controls oil sources 14 by the first hydraulic control one-way valve 17
Open, now hydraulic oil directly flows back to fuel tank 1 by the first check valve 17, plays a part of protective loop.Umklapp process is protected
Circuit theory all fours.
Claims (2)
- The machine hydraulic system 1. a kind of automatic reverse is plowed, it is characterised in that including：Fuel tank (1), oil filter (2), hydraulic pump (3), Total check valve (6), overflow valve (5), the first two-position four-way pilot operated directional control valve (8), the second two-position four-way pilot operated directional control valve (10), the One sequence valve (11), check valve (12), the second sequence valve (24), motor (18) and two-position two-way hydraulic control reversal valve (25)；The import of the oil filter (2) is connected with fuel tank (1), and the outlet of oil filter (2) is connected with the import of hydraulic pump (3), liquid The outlet of press pump (3) is connected with the import of total check valve (6) and the P mouths of overflow valve (5) respectively, the T mouths and fuel tank of overflow valve (5) (1) connect, the P mouths and the second two-position four-way liquid of the outlet of total check valve (6) respectively with the first two-position four-way pilot operated directional control valve (8) The P mouths connection of reversal valve (10) is controlled, the T mouths of the first two-position four-way pilot operated directional control valve (8) are connected with fuel tank (1), the one or two four The A mouths of logical pilot operated directional control valve (8) are connected with the left position hydraulic fluid port of the second two-position four-way pilot operated directional control valve (10), the first two-position four-way liquid The B mouths of control reversal valve (8) are connected with the right position hydraulic fluid port of the second two-position four-way pilot operated directional control valve (10), and the second two-position four-way hydraulic control is changed It is connected to the T mouths of valve (10) with fuel tank (1), the A mouths of the second two-position four-way pilot operated directional control valve (10) connect motor respectively with B mouthfuls (18) oil inlet and oil return opening, the left position hydraulic fluid port of the A mouths of the first sequence valve (11) and the first two-position four-way pilot operated directional control valve (8) Control port with two-position two-way hydraulic control reversal valve (25) is connected, the oil inlet of the P mouths and motor (18) of the first sequence valve (11) Connection, the import of check valve (12) is connected with the left position hydraulic fluid port of the first two-position four-way pilot operated directional control valve (8), and check valve (12) go out Mouth is connected with the oil inlet of motor (18), the right position of the A mouths of the second sequence valve (24) and the first two-position four-way pilot operated directional control valve (8) Hydraulic fluid port is connected, and the P mouths of the second sequence valve (24) are connected with the oil return opening of motor (18), the P of two-position two-way hydraulic control reversal valve (25) Mouth is connected with the right position hydraulic fluid port of the first two-position four-way pilot operated directional control valve (8) and the A mouths of the second sequence valve (24), two-position two-way hydraulic control The A mouths of reversal valve (25) are connected with fuel tank (1).
- The machine hydraulic system 2. automatic reverse according to claim 1 is plowed, it is characterised in that also rotate forward and overload including motor Protection device and motor reversion overload protection arrangement；The motor rotate forward overload protection arrangement include the first control oil sources (14), the first two position, three-way electromagnetic change valve (16) and First hydraulic control one-way valve (17)；The A mouths of first hydraulic control one-way valve (17) are connected with fuel tank (1), the B of the first hydraulic control one-way valve (17) Mouth is connected with the oil inlet of motor (18), and the control port X of the first hydraulic control one-way valve (17) and the first two-position three-way electromagnetic commutate The A mouths connection of valve (16), the P mouths of the first two position, three-way electromagnetic change valve (16) are connected with the first control oil sources (14), and the one or two The T mouths of position three-way solenoid valve (16) are connected with fuel tank (1)；Motor reversion overload protection arrangement include the second control oil sources (22), the second two position, three-way electromagnetic change valve (20) and Second hydraulic control one-way valve (19)；The A mouths of second hydraulic control one-way valve (19) are connected with fuel tank (1), the B of the second hydraulic control one-way valve (19) Mouth is connected with the oil return opening of motor (18), and the control port X of the second hydraulic control one-way valve (19) and the second two-position three-way electromagnetic commutate The A mouths connection of valve (20), the P mouths of the second two position, three-way electromagnetic change valve (20) are connected with the second control oil sources (22), and the two or two The T mouths of position three-way solenoid valve (20) are connected with fuel tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710316560.1A CN107061391B (en) | 2017-05-08 | 2017-05-08 | Automatic reverse is plowed machine hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710316560.1A CN107061391B (en) | 2017-05-08 | 2017-05-08 | Automatic reverse is plowed machine hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107061391A true CN107061391A (en) | 2017-08-18 |
| CN107061391B CN107061391B (en) | 2018-05-15 |
Family
ID=59597193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710316560.1A Expired - Fee Related CN107061391B (en) | 2017-05-08 | 2017-05-08 | Automatic reverse is plowed machine hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107061391B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352597A (en) * | 2022-01-25 | 2022-04-15 | 佳木斯大学 | Overload reverse impact valve and overload prevention method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638980A (en) * | 2008-07-30 | 2010-02-03 | 徐洪德 | Full-balance hydraulic transmission oil sucking machine |
| CN204140514U (en) * | 2014-08-08 | 2015-02-04 | 徐州五洋科技股份有限公司 | The auto-reverse hydraulic system of mining wet-spraying machine stirring motor |
| CN105007714A (en) * | 2013-06-17 | 2015-10-28 | 格兰集团营运挪威股份有限公司 | Device for automatic adjustment of the working width of first plough body in accordance with subsequent plough bodies' variable working width |
| CN105075425A (en) * | 2014-05-05 | 2015-11-25 | 萝北县凤翔镇裕龙农机修造厂 | Hydraulic-motor turnover device for turnover plow |
| CN205207301U (en) * | 2015-10-22 | 2016-05-04 | 长沙桑铼特农业机械设备有限公司 | Control system and track type tractor |
-
2017
- 2017-05-08 CN CN201710316560.1A patent/CN107061391B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638980A (en) * | 2008-07-30 | 2010-02-03 | 徐洪德 | Full-balance hydraulic transmission oil sucking machine |
| CN105007714A (en) * | 2013-06-17 | 2015-10-28 | 格兰集团营运挪威股份有限公司 | Device for automatic adjustment of the working width of first plough body in accordance with subsequent plough bodies' variable working width |
| CN105075425A (en) * | 2014-05-05 | 2015-11-25 | 萝北县凤翔镇裕龙农机修造厂 | Hydraulic-motor turnover device for turnover plow |
| CN204140514U (en) * | 2014-08-08 | 2015-02-04 | 徐州五洋科技股份有限公司 | The auto-reverse hydraulic system of mining wet-spraying machine stirring motor |
| CN205207301U (en) * | 2015-10-22 | 2016-05-04 | 长沙桑铼特农业机械设备有限公司 | Control system and track type tractor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352597A (en) * | 2022-01-25 | 2022-04-15 | 佳木斯大学 | Overload reverse impact valve and overload prevention method |
| CN114352597B (en) * | 2022-01-25 | 2024-04-23 | 佳木斯大学 | Overload reverse impact valve and overload prevention method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107061391B (en) | 2018-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104351020B (en) | Automatic farmland irrigation system based on image acquisition | |
| CN204948726U (en) | Morning and evening tides formula is irrigated system for seedbed | |
| CN105351263B (en) | A kind of differential hydro cylinder control loop | |
| CN103850286B (en) | A kind of electric drive hydraulic crawler excavator minus flow system based on constant displacement pump | |
| CN206323791U (en) | Harvester header and winder hydraulic integrated control system | |
| CN109139598A (en) | A kind of double valve-regulated load port separate control valves based on the compensation of machine hydraulic pressure difference | |
| CN203681648U (en) | Hydraulic steering control device for harvesting machine | |
| CN205446237U (en) | Hydraulic pump control ware | |
| CN107061391B (en) | Automatic reverse is plowed machine hydraulic system | |
| CN105155611B (en) | A kind of loading machine paced work hydraulic system Intelligent control system | |
| CN104389830A (en) | Intelligent synchronous type hydraulic hoist | |
| CN109984009A (en) | A kind of caterpillar band self-propelled Multifunctional fruit tree plant robot control system and method | |
| CN206495836U (en) | Tractor load-sensitive hydraulic system with Dual-pump flow-converging function | |
| CN209538267U (en) | A kind of hydraulic system for wireless remote control bull-dozer | |
| CN105123456A (en) | Intelligent automatic watering system | |
| CN207961100U (en) | A kind of hydraulic control system of flap valve device | |
| CN203948366U (en) | Two-way choice type interflow load-transducing multi-way valve | |
| CN207093480U (en) | A kind of hydraulic system | |
| CN206071977U (en) | Deep-outiet radial gate Hydraulic Hoist System | |
| CN205937270U (en) | Hydraulic system of harvester | |
| CN106523455A (en) | Tractor load-sensitive hydraulic system with double-pump confluence function | |
| CN207750316U (en) | Control valve group for the output of quantitative system flow proportional | |
| CN108035945A (en) | Control valve group for the output of quantitative system flow proportional | |
| CN208480223U (en) | A kind of control device of twin shaft Stratified soil cutting rotary cultivator | |
| CN203777730U (en) | Automatic residual film cleaning and sewage treatment control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20180515 |