CN104806585A - End cover and valve core seat integrated hydraulic oil cylinder of rice transplanter - Google Patents
End cover and valve core seat integrated hydraulic oil cylinder of rice transplanter Download PDFInfo
- Publication number
- CN104806585A CN104806585A CN201510215663.XA CN201510215663A CN104806585A CN 104806585 A CN104806585 A CN 104806585A CN 201510215663 A CN201510215663 A CN 201510215663A CN 104806585 A CN104806585 A CN 104806585A
- Authority
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- China
- Prior art keywords
- oil
- cover
- rear end
- end cover
- piston rod
- 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
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 22
- 240000007594 Oryza sativa Species 0.000 title abstract description 3
- 235000007164 Oryza sativa Nutrition 0.000 title abstract description 3
- 235000009566 rice Nutrition 0.000 title abstract description 3
- 239000003921 oil Substances 0.000 claims abstract description 135
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/02—Transplanting machines for seedlings
-
- 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
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Actuator (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
The invention discloses an end cover and valve core seat integrated hydraulic oil cylinder of a rice transplanter. The hydraulic oil cylinder comprises a gear box body, a rear end cover, a piston, an oil return pipe, a cylinder barrel, a piston rod, a front end cover, a stop lever, a push rod, a stroke safety valve, a valve core, a valve core cover and an oil inlet safety valve, wherein the piston, the stop lever, the push rod and the stroke safety valve are arranged on the piston rod to form a piston assembly to be arranged on the cylinder barrel; the front end cover and the rear end cover are arranged at the two ends of the cylinder barrel. The rear end cover is provided with a valve core hole, an oil drainage hole, a secondary oil inlet passage, an oil gathering hole, a main oil inlet passage, a safety oil return passage, a high-pressure oil return hole and a low-pressure oil return hole; the valve core is arranged in the valve core hole to integrate an oil path control at the rear end cover; a hydraulic oil inlet oil path and an oil return oil path are arranged in the rear end cover to realize integration of a hydraulic lifting oil cylinder, an oil path control valve, a high-pressure oil inlet path and a low-pressure oil return path; thus the space occupied by the hydraulic oil cylinder, the control valve and the oil paths is greatly reduced, working components required by the system are reduced, and the reliability for work of the system is effectively improved.
Description
Technical field
The present invention relates to a kind of end cap valve core case integral type transplanter hydraulic jack, be specifically related to a kind of hydraulic jack of the end cap valve core case integral type for the lifting of transplanter operation part.
Background technique
Raise-lower hydraulic oil cylinder is one of vitals of hand-held transplanter, to complete machine position, there is lifting, pose maintenance, slowly lower degradation function, smooth-goingly to break the barriers to realize machine, keeping the ground Clearance, accurately controlling to plant seedlings the degree of depth etc., therefore, the structure of raise-lower hydraulic oil cylinder and functional reliability have material impact to overall performance.At present, hand-held transplanter workpiece hydraulic system for lifting forms by each individual components substantially, namely hydraulic lifting system is formed by hydraulic jack, oil passage control valve, oil circuit safety installations and more return tube etc., thus complete the function of specifying, because system building blocks is many, erection space is large, be unfavorable for that the space optimization of each parts of complete machine is arranged especially, affect the structural design of workpiece, when even working and adjacent component interfere, exposed more return tube very easily interferes with lifting rod member, affects it and normally works; In addition, because system unit is many, the reliability of whole system can not be guaranteed; Also there is a small amount of hydraulic system that oil passage control valve is installed on oil cylinder side, but still take larger space, expose a large amount of pipeline simultaneously, each space of components of complete machine is arranged, operation process is very unfavorable.Therefore, transplanter need especially to develop a kind of by multiple component integration together, the hydraulic lifting system of delicate structure, to improve whole aircraft reliability, the space optimization realizing each parts of complete machine is arranged.
Summary of the invention
The object of the invention is constituent elements in order to overcome present transplanter hydraulic lifting system many, expose oil pipe numerous and diverse, affect workpiece space arrange and in using easily and adjacent component the shortcoming such as to interfere, the present invention is directed to narrow space on rear side of gearbox of rice transplanter, a kind of end cap valve core case integral type transplanter hydraulic jack is provided.
The present invention solves the technological scheme that its technical problem takes:
End cap valve core case integral type transplanter raise-lower hydraulic oil cylinder comprises gearbox casing, rear end cover, piston, return tube, cylinder barrel, piston rod, front cover pin, push rod, safety travel valve, spool, cartridge cover, oil-feed safety valve;
Piston is arranged on piston rod one end by screw thread, and oil duct is established at the center, piston rod one end of installing piston, and piston rod is diametrically provided with through hole, and the oil duct of center, piston rod one end communicates with the through hole in diameter of piston rod direction; Pin is circular, locating and machining endless belt in the middle of pin, lever gap is arranged in piston rod through hole diametrically, safety travel valve is arranged on the oil duct at center, piston rod one end, push rod clearance is placed in the central oil passage of piston rod, and push rod one end contacts with the sealed steel ball of safety travel valve, the push rod the other end contacts with the endless belt in the middle of pin;
Be arranged in cylinder barrel after piston and piston rod combine, cylinder barrel two ends install front cover, rear end cover respectively, and the piston rod the other end is through front cover, and front cover and rear end cover are fixed by circumferentially equally distributed bolt; Rear end cover is bolted on gearbox casing;
Return tube one end is arranged in the oil outlet of front cover, and the return tube the other end is arranged on the oil leak hole of rear end cover;
Spool is arranged in the spool bore of rear end cover by stuffing box bearing, and cartridge cover is arranged on rear end cover; Oil-feed safety valve is arranged on the safe oil return road that rear end cover is connected with main oil input channel.
Described rear end cover side is provided with round concave shape oil return cover, round concave shape oil return cover and gearbox casing spill connecting sleeve nested encryptions; The round concave shape oil return cover bottom of rear end cover is provided with oil leak hole, remittance oilhole, and the oilhole that converges communicates with the cavity that cartridge cover and rear end cover are formed; Rear end cover opposite side is provided with the oil-feed spill cover be connected with cylinder barrel; Rear end cover is provided with spool bore, the centerline parallel that spool bore center line and oil-feed spill are overlapped outside oil-feed spill cover; Main oil input channel, high pressure spill port, low pressure oil return, secondary oil input channel has been uniformly distributed in the middle part of spool bore, and the center line of main oil input channel, high pressure spill port, low pressure spill port, secondary oil input channel at same plane and with spool bore central axis, the cavity that high pressure spill port, low pressure spill port are formed with cartridge cover and rear end cover communicates, and secondary oil input channel has been communicated with the oil-feed spill cover of spool bore and rear end cover; Rear end cover arranges the safe oil return road be communicated with main oil input channel, and safe oil return road is provided with oil-feed safety valve; After rear end cover is arranged on gearbox casing, the outlet of safe oil return road is connected with gearbox casing, the round concave shape oil return cover of rear end cover is connected with gearbox casing inside.
Described spool and spool bore are precision-fit couple, and spool one end is provided with the assembling shaft shoulder, and stuffing box bearing fixing threaded hole is established at spool the other end center, are wedge shape with cross section, spool bore cooperation place in the middle part of spool, the arc shaped surface at wedge shape two ends also with spool bore precision-fit.
The beneficial effect that the present invention has is: by the rear end cover of hydraulic jack is integrated with oil passage control valve, oil-feed oil circuit, oil return circuit and safety oil-way is provided with at cover internal, and coordinate with the oil cylinder of its installation speed casing and form oil back chamber, achieve hydraulic lifting oil cylinder and oil passage control valve, high pressure in-line, low pressure oil circuit are integrated, significantly reduce the space that hydraulic jack, control valve and oil circuit are occupied, decrease workpiece needed for system, effectively improve the reliability of system works.
Accompanying drawing explanation
Fig. 1 is the plan view of end cap valve core case integral type transplanter raise-lower hydraulic oil cylinder;
Fig. 2 is the partial sectional view of the A-A of end cap valve core case integral type transplanter raise-lower hydraulic oil cylinder spool when being in lowering position;
Fig. 3 is the partial sectional view of the A-A of end cap valve core case integral type transplanter raise-lower hydraulic oil cylinder spool when being in holding position;
Fig. 4 is the partial sectional view of the A-A of end cap valve core case integral type transplanter raise-lower hydraulic oil cylinder spool when being in lifting position;
In figure: gearbox casing 1, rear end cover 2, piston 3, return tube 4, cylinder barrel 5, piston rod 6, front cover 7, pin 8, push rod 9, safety travel valve 10, spool 11, cartridge cover 12, oil-feed safety valve 13, oil leak hole 14, secondary oil input channel 15, remittance oilhole 16, main oil input channel 17, safe oil return road 18, oil outlet 19, gear pump 20, high pressure spill port 21, low pressure spill port 22, spool bore 23.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As Figure 1-4, end cap valve core case integral type transplanter hydraulic jack comprises gearbox casing 1, rear end cover 2, piston 3, return tube 4, cylinder barrel 5, piston rod 6, front cover 7, pin 8, push rod 9, safety travel valve 10, spool 11, cartridge cover 12, oil-feed safety valve 13, oil leak hole 14, secondary oil input channel 15, remittance oilhole 16, main oil input channel 17, safe oil return road 18, oil outlet 19, gear pump 20;
Piston 3 is arranged on piston rod 6 one end by screw thread, and oil duct is established at the center, piston rod 6 one end of installing piston 3, and piston rod 6 is diametrically provided with through hole, and the oil duct of center, piston rod 6 one end communicates with the diametric through hole of piston rod 6; Pin 8 is circular, the middle locating and machining endless belt of pin 8, lever 8 gap is arranged in piston rod 6 through hole diametrically, safety travel valve 10 is arranged on the oil duct at center, piston rod 6 one end, push rod 9 gap is placed in the central oil passage of piston rod 6, and push rod 9 one end contacts with the sealed steel ball of safety travel valve 10, push rod 9 the other end contacts with the endless belt in the middle of pin 8;
Be arranged in cylinder barrel 5 after piston 3 and piston rod 6 combines, cylinder barrel 5 two ends install front cover 7, rear end cover 2 respectively, and piston rod 6 the other end is through front cover 7, and front cover 7 and rear end cover 2 are fixed by circumferentially equally distributed bolt; Rear end cover 2 is bolted on gearbox casing 1; Gear pump 20 is fixed on gearbox casing, and gear pump 20 filler opening is connected with bottom speed change, and gear pump 20 oil outlet is connected with the main oil input channel 17 of rear end cover 2 by high-pressure oil pipe;
Return tube 4 one end is arranged in the oil outlet 19 of front cover 7, and return tube 4 the other end is arranged on the oil leak hole 14 of rear end cover 7;
Spool 11 is arranged in the spool bore 23 of rear end cover 2 by stuffing box bearing, and cartridge cover 12 is arranged on rear end cover 2; Oil-feed safety valve 13 is arranged on the safe oil return road 18 that rear end cover 2 is connected with main oil input channel 17.
Described rear end cover 2 side is provided with round concave shape oil return cover, round concave shape oil return cover and gearbox casing spill connecting sleeve nested encryptions; The round concave shape oil return cover bottom of rear end cover 2 is provided with oil leak hole 14, remittance oilhole 16, and the oilhole 16 that converges communicates with the cavity that cartridge cover 12 and rear end cover 2 are formed; Rear end cover 2 opposite side is provided with the oil-feed spill cover be connected with cylinder barrel 5; Rear end cover 2 is provided with spool bore 23, the centerline parallel that spool bore 23 center line and oil-feed spill are overlapped outside oil-feed spill cover; Main oil input channel 17, high pressure spill port 21, low pressure oil return 22, secondary oil input channel 15 has been uniformly distributed in the middle part of spool bore 23, and the center line of main oil input channel 17, high pressure spill port 21, low pressure spill port 22, secondary oil input channel 15 at same plane and with spool bore 23 central axis, the cavity that high pressure spill port 21, low pressure spill port 22 are formed with cartridge cover 12 and rear end cover 2 communicates, and secondary oil input channel 15 has been communicated with the oil-feed spill cover of spool bore 23 and rear end cover 2; Rear end cover 2 arranges the safe oil return road 18 be communicated with main oil input channel 17, and safe oil return road 18 is provided with oil-feed safety valve 13; After rear end cover 2 is arranged on gearbox casing 1, safe oil return road 18 outlet is connected with gearbox casing 1, and the round concave shape oil return cover of rear end cover 2 is connected with gearbox casing 1 inside.
Described spool 11 is precision-fit couple with spool bore 23, spool 11 one end is provided with the assembling shaft shoulder, stuffing box bearing fixing threaded hole is established at spool 11 the other end center, is wedge shape with cross section, spool bore 23 cooperation place in the middle part of spool 11, the arc shaped surface at wedge shape two ends also with spool bore 23 precision-fit.
Working procedure of the present invention:
After transplanter starts, gear pump 20 is also started working, now spool 11 coordinates with spool bore 23 and is in holding position, namely spool 11 makes main oil input channel 17 connect with high pressure spill port 21 and close time oil input channel 15, hydraulic oil is delivered to the main oil input channel 17 of rear end cover 2 by gear pump 20 by gearbox casing 1 inside, then the cavity of cartridge cover 12 and rear end cover 2 formation is flow to by high pressure spill port 21, flow to the round concave shape oil return cover of rear end cover 2 by remittance oilhole 16, enter change gearbox finally by the spill port on gearbox casing 1;
When machinery requirement promotes, rotary spool 11 makes spool 11 coordinate with spool bore 23 and is in lifting position, namely spool 11 makes main oil input channel 17 connect with time oil input channel 15, high pressure spill port 21, low pressure spill port 22 is in and is freely communicated with position, hydraulic fluid pressure is regulated by oil-feed safety valve 13, when oil pressure is higher, oil-feed safety valve 13 is opened and is made section hydraulic oil flow in gearbox casing 1 through safe oil return road 18, another part hydraulic oil enters cylinder barrel 5 through time oil input channel 15, promote piston rod 6 stretch out in piston 3 side under hydraulic fluid pressure effect, the hydraulic pressure of piston 3 opposite side is through oil outlet 19, return tube 4, oil leak hole 14 flows in gearbox casing 1, when piston 3 move to stretch out limit position time, pin 8 with front cover 7 interior contact and stop motion, if piston 3 has the trend promoting further to stretch out, pin 8 promotes push rod 9 and moves, push rod 9 makes safety travel valve 10 open, and the oil pressure difference of piston 3 both sides declines, thus protects oil cylinder,
When machinery requirement declines, rotary spool 11 makes spool 11 coordinate with spool bore 23 and is in lowering position, namely spool 11 makes main oil input channel 17 connect with high pressure spill port 21, secondary oil input channel 15 is in low pressure spill port 22 and is communicated with position, machine Gravitative Loads makes piston rod 6 shrink in piston rod 6, piston 3 compresses the hydraulic oil of cylinder barrel 5 near rear end cover 2 side, hydraulic oil is by secondary oil input channel 15, low pressure spill port 22, the oilhole 16 that converges arrives the round concave shape oil return cover of rear end cover 2, then hydraulic oil one branch enters in gearbox casing 1, another part is through oil leak hole 14, return tube 4, oil outlet 19 enters cylinder barrel 5 near front cover 7 side, and after the hydraulic oil that gear pump 20 is carried enters main oil input channel 17, the cavity of cartridge cover 12 and rear end cover 2 formation is directly flow to through high pressure spill port 21, flow to the round concave shape oil return cover of rear end cover 2 by remittance oilhole 16, finally flow in gearbox.
Claims (3)
1. an end cap valve core case integral type transplanter raise-lower hydraulic oil cylinder, is characterized in that: comprise gearbox casing (1), rear end cover (2), piston (3), return tube (4), cylinder barrel (5), piston rod (6), front cover (7), pin (8), push rod (9), safety travel valve (10), spool (11), cartridge cover (12), oil-feed safety valve (13);
Piston (3) is arranged on piston rod (6) one end by screw thread, piston rod (6) center, one end of installing piston (3) is provided with oil duct, piston rod (6) is diametrically provided with through hole, and the oil duct of piston rod (6) center, one end communicates with piston rod (6) diametric through hole; Pin (8) is circular, locating and machining endless belt in the middle of pin (8), lever (8) gap is arranged in piston rod (6) through hole diametrically, safety travel valve (10) is arranged in the oil duct at piston rod (6) center, one end, push rod (9) gap is placed in the central oil passage of piston rod (6), and push rod (9) one end contacts with the sealed steel ball of safety travel valve (10), push rod (9) the other end contacts with the endless belt in the middle of pin (8);
Be arranged in cylinder barrel (5) after piston (3) and piston rod (6) combine, cylinder barrel (5) two ends install front cover (7), rear end cover (2) respectively, and piston rod (6) the other end is through front cover (7), front cover (7) and rear end cover (2) are fixed by circumferentially equally distributed bolt; Rear end cover (2) is bolted on gearbox casing (1);
Return tube (4) one end is arranged in the oil outlet (19) of front cover (7), and return tube (4) the other end is arranged on the oil leak hole (14) of rear end cover (2);
Spool (11) is arranged in the spool bore (23) of rear end cover (2) by stuffing box bearing, and cartridge cover (12) is arranged on rear end cover (2); Oil-feed safety valve (13) is arranged on the safe oil return road (18) that rear end cover (2) is connected with main oil input channel (17).
2. a kind of end cap valve core case integral type transplanter raise-lower hydraulic oil cylinder according to claim 1, is characterized in that: described rear end cover (2) side is provided with round concave shape oil return cover, round concave shape oil return cover and gearbox casing spill connecting sleeve nested encryptions, the round concave shape oil return cover bottom of rear end cover (2) is provided with oil leak hole (14), remittance oilhole (16), and the oilhole (16) that converges communicates with the cavity that cartridge cover (12) and rear end cover (2) are formed, rear end cover (2) opposite side is provided with the oil-feed spill cover be connected with cylinder barrel (5), rear end cover (2) is provided with spool bore (23), the centerline parallel that spool bore (23) center line and oil-feed spill are overlapped outside oil-feed spill cover, main oil input channel (17) has been uniformly distributed at spool bore (23) middle part, high pressure spill port (21), low pressure oil return (22), secondary oil input channel (15), and main oil input channel (17), high pressure spill port (21), low pressure spill port (22), the center line of secondary oil input channel (15) at same plane and with spool bore (23) central axis, high pressure spill port (21), the cavity that low pressure spill port (22) is formed with cartridge cover (12) and rear end cover (2) communicates, secondary oil input channel (15) has been communicated with the oil-feed spill cover of spool bore (23) and rear end cover (2), above arrange the safe oil return road (18) be communicated with main oil input channel (17) at rear end cover (2), safe oil return road (18) are provided with oil-feed safety valve (13), after rear end cover (2) is arranged on gearbox casing (1), safe oil return road (18) outlet is connected with gearbox casing (1), and the round concave shape oil return cover of rear end cover (2) is connected with gearbox casing (1) inside.
3. a kind of end cap valve core case integral type transplanter raise-lower hydraulic oil cylinder according to claim 1, it is characterized in that: described spool (11) and spool bore (23) are precision-fit couple, spool (11) one end is provided with the assembling shaft shoulder, stuffing box bearing fixing threaded hole is established at spool (11) the other end center, spool (11) middle part is wedge shape with spool bore (23) cross section, cooperation place, the arc shaped surface at wedge shape two ends also with spool bore (23) precision-fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510215663.XA CN104806585B (en) | 2015-04-30 | 2015-04-30 | End cap valve core case integral type rice transplanter hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510215663.XA CN104806585B (en) | 2015-04-30 | 2015-04-30 | End cap valve core case integral type rice transplanter hydraulic jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104806585A true CN104806585A (en) | 2015-07-29 |
| CN104806585B CN104806585B (en) | 2017-03-08 |
Family
ID=53691702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510215663.XA Active CN104806585B (en) | 2015-04-30 | 2015-04-30 | End cap valve core case integral type rice transplanter hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806585B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086077A (en) * | 1992-10-30 | 1994-05-04 | 株式会社久保田 | The apparatus for controlling of lifting of machines working in paddy field |
| CN201888090U (en) * | 2010-05-31 | 2011-07-06 | 浙江小精农机制造有限公司 | Pressure relief device for lifting oil cylinder of seedling planting machine |
| CN201957434U (en) * | 2011-01-13 | 2011-09-07 | 湖州生力液压有限公司 | Sensing profiling motive power control integrating device |
| CN102943789A (en) * | 2012-11-09 | 2013-02-27 | 昆明中铁大型养路机械集团有限公司 | Adjustable-pressure and adjustable-flow buffer hydraulic cylinder, control method and hydraulic system |
| CN202773340U (en) * | 2012-08-24 | 2013-03-13 | 湖州生力液压有限公司 | Hydraulic control device for rice transplanter |
| JP2015010684A (en) * | 2013-07-01 | 2015-01-19 | 株式会社クボタ | Hydraulic circuit of work vehicle |
| CN204628122U (en) * | 2015-04-30 | 2015-09-09 | 浙江小精农机制造有限公司 | A kind of transplanter raise-lower hydraulic oil cylinder |
-
2015
- 2015-04-30 CN CN201510215663.XA patent/CN104806585B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086077A (en) * | 1992-10-30 | 1994-05-04 | 株式会社久保田 | The apparatus for controlling of lifting of machines working in paddy field |
| CN201888090U (en) * | 2010-05-31 | 2011-07-06 | 浙江小精农机制造有限公司 | Pressure relief device for lifting oil cylinder of seedling planting machine |
| CN201957434U (en) * | 2011-01-13 | 2011-09-07 | 湖州生力液压有限公司 | Sensing profiling motive power control integrating device |
| CN202773340U (en) * | 2012-08-24 | 2013-03-13 | 湖州生力液压有限公司 | Hydraulic control device for rice transplanter |
| CN102943789A (en) * | 2012-11-09 | 2013-02-27 | 昆明中铁大型养路机械集团有限公司 | Adjustable-pressure and adjustable-flow buffer hydraulic cylinder, control method and hydraulic system |
| JP2015010684A (en) * | 2013-07-01 | 2015-01-19 | 株式会社クボタ | Hydraulic circuit of work vehicle |
| CN204628122U (en) * | 2015-04-30 | 2015-09-09 | 浙江小精农机制造有限公司 | A kind of transplanter raise-lower hydraulic oil cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104806585B (en) | 2017-03-08 |
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Denomination of invention: Hydraulic cylinder of integrated transplanting machine with end cover valve core seat Granted publication date: 20170308 Pledgee: Zhejiang business bank Limited by Share Ltd. Shaoxing Shangyu branch Pledgor: Zhejiang Xiaojing Agricultural Machinery Co.,Ltd. Registration number: Y2024980019205 |