CN104806585B - End cap valve core case integral type rice transplanter hydraulic jack - Google Patents
End cap valve core case integral type rice transplanter hydraulic jack Download PDFInfo
- Publication number
- CN104806585B CN104806585B CN201510215663.XA CN201510215663A CN104806585B CN 104806585 B CN104806585 B CN 104806585B CN 201510215663 A CN201510215663 A CN 201510215663A CN 104806585 B CN104806585 B CN 104806585B
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- oil
- end cap
- rear end
- valve
- piston rod
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 18
- 235000009566 rice Nutrition 0.000 title claims abstract description 18
- 240000007594 Oryza sativa Species 0.000 title abstract 2
- 239000003921 oil Substances 0.000 claims abstract description 141
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 18
- 241000209094 Oryza Species 0.000 claims description 16
- 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
- 230000007423 decrease Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000034 method 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
- 208000002925 dental caries Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 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 present invention discloses a kind of end cap valve core case integral type rice transplanter raise-lower hydraulic oil cylinder.Including gearbox body, rear end cap, piston, oil return pipe, cylinder barrel, piston rod, drive end bearing bracket, pin, push rod, safety travel valve, valve element, cartridge cover, oil-feed relief valve, piston, pin, push rod, safety travel valve are arranged on after piston rod constitutes piston component and are arranged on cylinder barrel, and drive end bearing bracket, rear end cap are arranged on cylinder barrel two ends.Spool bore, oil leak hole, secondary oil input channel, remittance oilhole, main oil input channel, safe oil return road, high pressure spill port, low pressure spill port are set on rear end cap of the present invention, valve element is arranged in spool bore makes oil circuit control be integrated in rear end cap, hydraulic pressure oil-feed oil circuit, oil return circuit are arranged in rear end cap, achieve hydraulic lifting oil cylinder integrated with oil passage control valve, high pressure in-line, low pressure oil return line, significantly reduce the space that hydraulic jack, control valve and oil circuit are occupied, decrease workpiece needed for system, be effectively improved the reliability of system work.
Description
Technical field
The present invention relates to a kind of end cap valve core case integral type rice transplanter hydraulic jack is and in particular to a kind of make for rice transplanter
The hydraulic jack of the end cap valve core case integral type of industry part lifting.
Background technology
Raise-lower hydraulic oil cylinder is one of vitals of hand-held transplanter, whole seat in the plane is put have lifting, pose keep,
Slow the function such as decline, broken the barriers in smooth-going with realizing machine, keep road clearance, precise control to plant seedlings depth etc., because
This, the structure of raise-lower hydraulic oil cylinder and functional reliability have material impact to overall performance.At present, hand-held transplanter work
Part hydraulic system for lifting substantially by each individual components form, that is, by hydraulic jack, oil passage control valve, oil circuit safety device with
And the composition hydraulic lifting system such as more oil return pipe, thus completing the function of specifying, because system building blocks are many, assembling peace
Dress space is big, is particularly disadvantageous for the space optimization arrangement of each part of whole machine, affects the structure design of workpiece, or even during work
Interfere with adjacent component, exposed more oil return pipe is easily interfered with lifting rod member, affects its normal work；Separately
Outward, because system unit is many, the reliability of whole system cannot be guaranteed；Also there is a small amount of hydraulic system that oil passage control valve is installed
In oil cylinder side, but still take larger space, expose a large amount of pipelines simultaneously, each space of components arrangement, operation process to whole machine
Very unfavorable.Therefore, rice transplanter especially need to develop a kind of by integrated for multiple parts together, the hydraulic lifting system of delicate structure
System, to improve whole aircraft reliability, realizes the space optimization arrangement of each part of whole machine.
Content of the invention
The invention aims to overcome present rice transplanter hydraulic lifting system building block many, to expose oil pipe numerous
Miscellaneous, impact workpiece space arrangement and in using easily with the shortcomings of adjacent component interferes, the present invention is for rice transplanter
Narrow space on rear side of change speed gear box, provides a kind of end cap valve core case integral type rice transplanter hydraulic jack.
The present invention solves its technical problem and is adopted the technical scheme that：
End cap valve core case integral type rice transplanter raise-lower hydraulic oil cylinder includes gearbox body, rear end cap, piston, oil return pipe, cylinder
Cylinder, piston rod, drive end bearing bracket pin, push rod, safety travel valve, valve element, cartridge cover, oil-feed relief valve；
By being threadably mounted at piston rod one end, the piston rod one end center installing piston sets oil duct, piston rod edge to piston
Diametric(al) is provided with through hole, and the oil duct of piston rod one end center is communicated with the through hole in diameter of piston rod direction；Pin is circle
Shape, locating and machining annulus in the middle of pin, lever gap is arranged in the diametrically opposite through hole of piston rod, and safety travel valve is installed
On the oil duct at piston rod one end center, push rod clearance is placed in the central oil passage of piston rod, and push rod one end and safety travel
The sealed steel ball contact of valve, the endless belt contact in the middle of the push rod other end and pin；
Piston is arranged in cylinder barrel after combining with piston rod, and cylinder barrel two ends are respectively mounted drive end bearing bracket, rear end cap, and piston rod
The other end passes through drive end bearing bracket, and drive end bearing bracket is fixed by circumferentially equally distributed bolt with rear end cap；It is solid that rear end cap passes through bolt
It is scheduled on gearbox body；
Oil return pipe one end is arranged in the oil outlet of drive end bearing bracket, and the oil return pipe other end is arranged on the oil leak hole of rear end cap；
Valve element is arranged in the spool bore of rear end cap by sealed bearings, and cartridge cover is arranged on rear end cap；Oil-feed safety
Valve is arranged on the safe oil return road that rear end cap is connected with main oil input channel.
Described rear end cap side is provided with round concave shape oil return set, and round concave shape oil return set is nested with gearbox body spill adapter sleeve even
Connect；The round concave shape oil return set bottom of rear end cap is provided with oil leak hole, the oilhole that converges, the cavity that the oilhole that converges is constituted with cartridge cover and rear end cap
Communicate；Rear end cap opposite side is provided with the oil-feed spill set being connected with cylinder barrel；Rear end cap is externally provided with spool bore, valve in oil-feed spill set
The centerline parallel that core bore centrage is covered with oil-feed spill；Be uniformly distributed in the middle part of spool bore main oil input channel, high pressure spill port,
Low pressure oil return, secondary oil input channel, and main oil input channel, high pressure spill port, low pressure spill port, the centrage of secondary oil input channel are in same plane
And with spool bore central axis, the cavity that high pressure spill port, low pressure spill port and cartridge cover and rear end cap are constituted communicates, secondary enter
Oil duct has connected the oil-feed spill set of spool bore and rear end cap；The safe oil return being connected with main oil input channel is arranged on rear end cap
Road, safe oil return road is provided with oil-feed relief valve；After rear end cap is arranged on gearbox body, safe oil return road exports and gearbox body
It is connected, the round concave shape oil return set of rear end cap is connected with inside gearbox body.
Described valve element and spool bore are precision-fit couple, and valve element one end is provided with the assembling shaft shoulder, and valve element other end center sets
Sealed bearings fixing threaded hole, in the middle part of valve element with spool bore cooperation at section be wedge shape, the arcwall face at wedge shape two ends also with spool bore
Precision-fit.
The invention has the advantages that：By the rear end cap of hydraulic jack is integrated with oil passage control valve, in end cap
Inside is provided with oil-feed oil circuit, oil return circuit and safety oil-way, and the oil cylinder speed casing cooperation installed with it constitutes oil back chamber, real
Show hydraulic lifting oil cylinder integrated with oil passage control valve, high pressure in-line, low pressure oil return line, significantly reduce hydraulic oil
The space that cylinder, control valve and oil circuit are occupied, decreases workpiece needed for system, is effectively improved the reliability of system work
Property.
Brief description
Fig. 1 is the front view of end cap valve core case integral type rice transplanter raise-lower hydraulic oil cylinder；
Fig. 2 is the local that end cap valve core case integral type rice transplanter raise-lower hydraulic oil cylinder valve element is in A-A during down position
Sectional view；
Fig. 3 is the local that end cap valve core case integral type rice transplanter raise-lower hydraulic oil cylinder valve element is in A-A during holding position
Sectional view；
Fig. 4 is the local that end cap valve core case integral type rice transplanter raise-lower hydraulic oil cylinder valve element is in A-A during lifting position
Sectional view；
In figure：Gearbox body 1, rear end cap 2, piston 3, oil return pipe 4, cylinder barrel 5, piston rod 6, drive end bearing bracket 7, pin 8, push rod
9th, safety travel valve 10, valve element 11, cartridge cover 12, oil-feed relief valve 13, oil leak hole 14, secondary oil input channel 15, remittance oilhole 16, master enter
Oil duct 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.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As Figure 1-4, end cap valve core case integral type rice transplanter hydraulic jack includes gearbox body 1, rear end cap 2, piston
3rd, oil return pipe 4, cylinder barrel 5, piston rod 6, drive end bearing bracket 7, pin 8, push rod 9, safety travel valve 10, valve element 11, cartridge cover 12, oil-feed
Relief 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；
By being threadably mounted at piston rod 6 one end, the piston rod 6 one end center installing piston 3 sets oil duct, piston to piston 3
Bar 6 is diametrically provided with through hole, and the oil duct through hole diametric with piston rod 6 of piston rod 6 one end center communicates；Gear
Bar 8 is circle, the middle locating and machining annulus of pin 8, and lever 8 gap is arranged in the diametrically opposite through hole of piston rod 6, stroke
Relief valve 10 is arranged on the oil duct at piston rod 6 one end center, and push rod 9 gap is placed in the central oil passage of piston rod 6, and push rod
9 one end are contacted with the sealed steel ball of safety travel valve 10, the endless belt contact in the middle of push rod 9 other end and pin 8；
Piston 3 is arranged on after being combined with piston rod 6 in cylinder barrel 5, and cylinder barrel 5 two ends are respectively mounted drive end bearing bracket 7, rear end cap 2, and
Piston rod 6 other end passes through drive end bearing bracket 7, and drive end bearing bracket 7 is fixed by circumferentially equally distributed bolt with rear end cap 2；Rear end cap 2
It is bolted on gearbox body 1；Gear pump 20 is fixed on gearbox body, gear pump 20 oil-in and speed change bottom phase
Connection, gear pump 20 oil-out is connected with the main oil input channel 17 of rear end cap 2 by high-pressure oil pipe；
Oil return pipe 4 one end is arranged in the oil outlet 19 of drive end bearing bracket 7, and oil return pipe 4 other end is arranged on the draining of rear end cap 7
Hole 14；
Valve element 11 is arranged in the spool bore 23 of rear end cap 2 by sealed bearings, and cartridge cover 12 is arranged on rear end cap 2；
Oil-feed relief valve 13 is arranged on the safe oil return road 18 that rear end cap 2 is connected with main oil input channel 17.
Described rear end cap 2 side is provided with round concave shape oil return set, and round concave shape oil return set is nested with gearbox body spill adapter sleeve
Connect；The round concave shape oil return set bottom of rear end cap 2 is provided with oil leak hole 14, the oilhole 16 that converges, remittance oilhole 16 and cartridge cover 12 and rear end
The cavity of lid 2 composition communicates；Rear end cap 2 opposite side is provided with the oil-feed spill set being connected with cylinder barrel 5；Rear end cap 2 is in oil-feed spill
Set is externally provided with spool bore 23, the centerline parallel that spool bore 23 centrage is covered with oil-feed spill；Uniformly divide at spool bore 23 middle part
Cloth main oil input channel 17, 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 centrage of secondary oil input channel 15 in same plane and with spool bore 23 central axis, high pressure spill port 21,
The cavity that low pressure spill port 22 is constituted with cartridge cover 12 and rear end cap 2 communicates, and secondary oil input channel 15 has connected spool bore 23 and rear end
The oil-feed spill set of lid 2；Rear end cap 2 arranges the safe oil return road 18 connecting with main oil input channel 17, on safe oil return road 18
It is provided with oil-feed relief valve 13；After rear end cap 2 is arranged on gearbox body 1, safe oil return road 18 outlet is connected with gearbox body 1,
The round concave shape oil return set of rear end cap 2 is connected with inside gearbox body 1.
Described valve element 11 and spool bore 23 are precision-fit couple, and valve element 11 one end is provided with the assembling shaft shoulder, and valve element 11 is another
End center sets sealed bearings fixing threaded hole, and at valve element 11 middle part and spool bore 23 cooperation, section is wedge shape, the arc at wedge shape two ends
Face also with spool bore 23 precision-fit.
The work process of the present invention：
After rice transplanter starts, gear pump 20 also begins to work, and now valve element 11 and spool bore 23 cooperation is in holding position,
I.e. valve element 11 makes main oil input channel 17 and high pressure spill port 21 connect and closes time oil input channel 15, hydraulic oil by gearbox body 1 inside
It is delivered to the main oil input channel 17 of rear end cap 2 by gear pump 20, then cartridge cover 12 and rear end are flow to by high pressure spill port 21
The cavitys of lid 2 composition, flow to the round concave shape oil return set of rear end cap 2 by converging oilhole 16, after through the spill port on gearbox body 1
Enter and become change speed gear box；
When machinery requirement is lifted, rotary spool 11 makes valve element 11 be in lifting position with spool bore 23 cooperation, i.e. valve element
11 make main oil input channel 17 connect with time oil input channel 15, and high pressure spill port 21, low pressure spill port 22 are in free communicating position, hydraulic pressure
Oil pressure is adjusted by oil-feed relief valve 13, and when oil pressure is higher, oil-feed relief valve 13 is opened makes section hydraulic oil through safe oil return
Road 18 flows in gearbox body 1, and another part hydraulic oil enters cylinder barrel 5 through time oil input channel 15, in work under hydraulic fluid pressure effect
Fill in 3 sides and promote piston rod 6 to stretch out, the hydraulic pressure of piston 3 opposite side flows into through oil outlet 19, oil return pipe 4, oil leak hole 14
In gearbox body 1；When piston 3 moves to and stretches out extreme position, pin 8 and drive end bearing bracket 7 interior contact stop motion, if
Piston 3 has and promotes the trend stretched out further, and pin 8 promotes push rod 9 to move, and push rod 9 makes safety travel valve 10 open, piston
The oil pressure difference of 3 both sides declines, thus protecting oil cylinder；
When machinery requirement declines, rotary spool 11 makes valve element 11 be in down position with spool bore 23 cooperation, i.e. valve element
11 make main oil input channel 17 and high pressure spill port 21 connect, and secondary oil input channel 15 is in communicating position with low pressure spill port 22, and machine is certainly
Recast makes piston rod 6 shrink for piston rod 6, and piston 3 compresses the hydraulic oil near rear end cap 2 side for the cylinder barrel 5, and hydraulic oil is by secondary
Oil input channel 15, low pressure spill port 22, the oilhole 16 that converges reach the round concave shape oil return set of rear end cap 2, and then hydraulic oil one branch enters
In gearbox body 1, another part enters cylinder barrel 5 near drive end bearing bracket 7 side through oil leak hole 14, oil return pipe 4, oil outlet 19；And
Hydraulic oil through gear pump 20 conveying enter to become owner of after oil input channel 17 directly through high pressure spill port 21 flow to cartridge cover 12 with after
The cavity that end cap 2 is constituted, flow to the round concave shape oil return set of rear end cap 2 by remittance oilhole 16, finally flows in change speed gear box.
Claims (2)
1. a kind of end cap valve core case integral type rice transplanter raise-lower hydraulic oil cylinder it is characterised in that：Including gearbox body (1), rear end
Lid (2), piston (3), oil return pipe (4), cylinder barrel (5), piston rod (6), drive end bearing bracket (7), pin (8), push rod (9), safety travel
Valve (10), valve element (11), cartridge cover (12), oil-feed relief valve (13)；
By being threadably mounted at piston rod (6) one end, piston rod (6) one end center installing piston (3) is provided with oil to piston (3)
Road, piston rod (6) is diametrically provided with through hole, and the oil duct of piston rod (6) one end center and piston rod (6) diametric(al)
Through hole communicate；Pin (8) is locating and machining annulus in the middle of circle, pin (8), and pin (8) gap is arranged on piston rod (6) edge
In diametric through hole, safety travel valve (10) is arranged in the oil duct at piston rod (6) one end center, and push rod (9) gap is put
In the central oil passage of piston rod (6), and push rod (9) one end is contacted with the sealed steel ball of safety travel valve (10), and push rod (9) is another
Endless belt contact in the middle of one end and pin (8)；
Piston (3) is arranged on after being combined with piston rod (6) in cylinder barrel (5), and cylinder barrel (5) two ends are respectively mounted drive end bearing bracket (7), rear end
Lid (2), and piston rod (6) other end passes through drive end bearing bracket (7), drive end bearing bracket (7) and rear end cap (2) pass through circumferentially equally distributed
Bolt is fixed；Rear end cap (2) is bolted on gearbox body (1)；
Oil return pipe (4) one end is arranged in the oil outlet (19) of drive end bearing bracket (7), and oil return pipe (4) other end is arranged on rear end cap (2)
Oil leak hole (14)；
Valve element (11) is arranged in the spool bore (23) of rear end cap (2) by sealed bearings, and cartridge cover (12) is arranged on rear end cap
(2) on；Oil-feed relief valve (13) is arranged on the safe oil return road (18) that rear end cap (2) is connected with main oil input channel (17)；
Described rear end cap (2) side is provided with round concave shape oil return set, and round concave shape oil return set is nested with gearbox body spill adapter sleeve even
Connect；The round concave shape oil return set bottom of rear end cap (2) is provided with oil leak hole (14), the oilhole (16) that converges, remittance oilhole (16) and cartridge cover
(12) communicate with the cavity that constitutes of rear end cap (2)；Rear end cap (2) opposite side is provided with the oil-feed spill set being connected with cylinder barrel (5)；Afterwards
End cap (2) is externally provided with spool bore (23), the centerline parallel that spool bore (23) centrage is covered with oil-feed spill in oil-feed spill set；
It has been uniformly distributed main oil input channel (17), high pressure spill port (21), low pressure spill port (22), secondary oil input channel in the middle part of spool bore (23)
, and main oil input channel (17), high pressure spill port (21), low pressure spill port (22), the centrage of secondary oil input channel (15) are same (15)
Plane and with spool bore (23) central axis, high pressure spill port (21), low pressure spill port (22) and cartridge cover (12) and rear end
The cavity that lid (2) is constituted communicates, and secondary oil input channel (15) has connected the oil-feed spill set of spool bore (23) and rear end cap (2)；Rear
End cap (2) above arranges the safe oil return road (18) connecting with main oil input channel (17), and safe oil return road (18) are provided with oil-feed safety
Valve (13)；After rear end cap (2) is arranged on gearbox body (1), safe oil return road (18) outlet is connected with gearbox body (1), after
The round concave shape oil return set of end cap (2) is connected with inside gearbox body (1).
2. a kind of end cap valve core case integral type rice transplanter raise-lower hydraulic oil cylinder according to claim 1 it is characterised in that：Institute
Stating valve element (11) with spool bore (23) is precision-fit couple, and valve element (11) one end is provided with the assembling shaft shoulder, valve element (11) other end
Center sets sealed bearings fixing threaded hole, in the middle part of valve element (11) with spool bore (23) cooperation at section be wedge shape, the arc at wedge shape two ends
Shape face 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 CN104806585A (en) | 2015-07-29 |
| CN104806585B true 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) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW218839B (en) * | 1992-10-30 | 1994-01-11 | Kuboda Kk | An up-down control apparatus for water field planting use |
| 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 |
| CN102943789B (en) * | 2012-11-09 | 2015-12-09 | 昆明中铁大型养路机械集团有限公司 | The buffering hydraulic cylinder of a kind of adjustable pressure and flow, controlling method and hydraulic system |
| JP6157246B2 (en) * | 2013-07-01 | 2017-07-05 | 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
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| Publication number | Publication date |
|---|---|
| CN104806585A (en) | 2015-07-29 |
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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 |