CN204628122U - A kind of transplanter raise-lower hydraulic oil cylinder - Google Patents
A kind of transplanter raise-lower hydraulic oil cylinder Download PDFInfo
- Publication number
- CN204628122U CN204628122U CN201520274083.3U CN201520274083U CN204628122U CN 204628122 U CN204628122 U CN 204628122U CN 201520274083 U CN201520274083 U CN 201520274083U CN 204628122 U CN204628122 U CN 204628122U
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- China
- Prior art keywords
- oil
- rear end
- cover
- end cover
- spool
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Abstract
The utility model discloses a kind of transplanter raise-lower hydraulic oil cylinder.Comprise 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, pin, push rod, safety travel valve are arranged on after piston rod forms piston assembly and are arranged on cylinder barrel, and front cover, rear end cover are arranged on cylinder barrel two ends.The utility model rear end cover is established 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, spool is arranged in spool bore and makes oil circuit control integration at rear end cover, hydraulic pressure oil-feed oil circuit, oil return circuit are arranged in rear end cover, 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.
Description
Technical field
The utility model relates to a kind of hydraulic jack, is specifically related to a kind of transplanter raise-lower hydraulic oil cylinder.
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 purpose of this utility model be the 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 utility model, for narrow space on rear side of gearbox of rice transplanter, provides a kind of transplanter raise-lower hydraulic oil cylinder.
The technical scheme in the invention for solving the technical problem is:
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 utility model 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 transplanter raise-lower hydraulic oil cylinder;
Fig. 2 is the partial sectional view of the A-A of transplanter raise-lower hydraulic oil cylinder spool when being in lowering position;
Fig. 3 is the partial sectional view of the A-A of transplanter raise-lower hydraulic oil cylinder spool when being in holding position;
Fig. 4 is the partial sectional view of the A-A of 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 utility model is described in further detail.
As Figure 1-4, 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 utility model:
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. a 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 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 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 |
|---|---|---|---|
| CN201520274083.3U CN204628122U (en) | 2015-04-30 | 2015-04-30 | A kind of transplanter raise-lower hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520274083.3U CN204628122U (en) | 2015-04-30 | 2015-04-30 | A kind of transplanter raise-lower hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204628122U true CN204628122U (en) | 2015-09-09 |
Family
ID=54047158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520274083.3U Withdrawn - After Issue CN204628122U (en) | 2015-04-30 | 2015-04-30 | A kind of transplanter raise-lower hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204628122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806585A (en) * | 2015-04-30 | 2015-07-29 | 浙江小精农机制造有限公司 | End cover and valve core seat integrated hydraulic oil cylinder of rice transplanter |
-
2015
- 2015-04-30 CN CN201520274083.3U patent/CN204628122U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806585A (en) * | 2015-04-30 | 2015-07-29 | 浙江小精农机制造有限公司 | End cover and valve core seat integrated hydraulic oil cylinder of rice transplanter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150909 Effective date of abandoning: 20171114 |
|
| AV01 | Patent right actively abandoned |