CN103104570A - Overflow structure for hydraulic integral valve of harvester and hydraulic integral valve - Google Patents
Overflow structure for hydraulic integral valve of harvester and hydraulic integral valve Download PDFInfo
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- CN103104570A CN103104570A CN2013100356238A CN201310035623A CN103104570A CN 103104570 A CN103104570 A CN 103104570A CN 2013100356238 A CN2013100356238 A CN 2013100356238A CN 201310035623 A CN201310035623 A CN 201310035623A CN 103104570 A CN103104570 A CN 103104570A
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Abstract
The invention discloses an overflow structure for a hydraulic integral valve of a harvester and the hydraulic integral valve. The overflow structure comprises a high-pressure overflow valve and a low-pressure overflow valve. The high-pressure overflow valve comprises a valve sleeve, a first screw stopper, a first spring and a first valve core arranged in the valve sleeve. The low-pressure overflow valve comprises a valve seat, a second screw stopper, a second spring and a second valve core matched with the valve seat. The second valve core is a cone-shaped valve core. An axial guiding hole is arranged in the second screw stopper. The second valve core comprises a second cone-shaped body matched with the valve seat and a second guiding column connected in the axial guiding hole in an inserted mode, and the second spring is sleeved on the second guiding column. When the overflow structure for the hydraulic integral valve of the harvester and the hydraulic integral valve are used, noise dose not exist.
Description
Technical field:
The present invention relates to agricultural valve technology field, relate in particular a kind of flow structure for the reaper hydraulic integrated valve and hydraulic integrated valve.
Background technique
our company applied for being used for the lifting of being convenient to manual control of reaper and the patent of invention of steering hydraulic integrated valve in 2009, publication number is CN101504018A, open day is on 08 12nd, 2009, the lifting and the reaper that utilize this hydraulic integrated valve to control harvester header turn to, this hydraulic integrated valve comprises valve body, turn to guiding valve, the lifting guiding valve, Pilot operated check valve, high-pressure overflow valve and low pressure relief valve, filler opening is arranged on valve body, return opening, the hoist cylinder interface, steering cylinder interface and steering cylinder return opening, it utilizes high-pressure overflow valve to control the hoist cylinder working pressure, utilize low pressure relief valve to control the steering cylinder working pressure, when turning to guiding valve and lifting guiding valve all to be in original position, the direct oil sump tank of hydraulic oil that enters from filler opening, but, we find in actual use, in its working procedure, noise is larger, especially, have " chirp " noise.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art part, a kind of flow structure for the reaper hydraulic integrated valve and hydraulic integrated valve are provided, it is simple in structure, volume is little, compact structure, integrated height, installation and convenient disassembly, using process do not have " chirp " noise, high working efficiency.
In order to solve the problems of the technologies described above, technological scheme of the present invention is as follows: the flow structure that is used for the reaper hydraulic integrated valve, comprise high-pressure overflow valve and low pressure relief valve, described high-pressure overflow valve comprises valve pocket, the first plug screw, the first spring and is arranged on the first interior spool of described valve pocket; Described low pressure relief valve comprise valve seat, the second plug screw, the second spring and and the second spool of matching of described valve seat, described the second spool is taper valve core, described the second plug screw is provided with axially directed hole, described the second spool comprises the second taper that matches with described valve seat and is plugged on the second directional post in described axially directed hole, and described the second spring housing is contained on described the second directional post.
The applicant finds in repetition test, research, test, in high-pressure overflow valve and low pressure relief valve working procedure, send " chirp " noise, noise is mainly sent by low pressure relief valve, its reason, at first; Because working pressure has improved, the working pressure of low pressure relief valve originally is 4-5MPa, now, along with the variation of service condition, the working pressure of low pressure relief valve is 8-9MPa, when service condition is constant, it does not have noise when in use, we find if the working pressure of low pressure relief valve is lowered, just there is no noise in process of the test; Secondly, we find after passing through test of many times, analysis, high-pressure overflow valve and low pressure relief valve are communicated with by an auxiliary hole and return opening, the hydraulic oil that overflows is returned to fuel tank by return opening, especially when whole oil return system has back pressure, through the test, when the oil return system back pressure is greater than 0.3MPa, " chirp " noise will occur; Therefore, we improve low pressure relief valve, change the second spool into taper valve core; Simultaneously, described the second plug screw is provided with axially directed hole, and the second directional post of described the second spool is plugged in described axially directed hole.Through above-mentioned setting, the noise that we have produced when having eliminated low pressure relief valve work has improved working efficiency.
As preferably, be provided with the resilient guiding device that matches with described the second directional post in described axially directed hole.
Above-mentioned setting, do not have when further guaranteeing low pressure relief valve work " chirp " noise, simultaneously, can also reduce the machining accuracy in the second plug screw, axially directed hole etc.
As preferably, described resilient guiding device comprises seal ring or sealing gasket.
Above-mentioned setting, simple in structure, abate the noise effective.
As preferably, described axially directed hole is provided with the spring mounting hole that communicates with described the second screw plunger end, and described seal ring or sealing gasket are arranged on described spring mounting hole bottom surface.
Above-mentioned setting is convenient to change seal ring or sealing gasket, guarantees to abate the noise effect.
As preferably, described valve seat be provided with the second valve port of matching with described the second taper and and described the second valve port communicate along with becoming gradually large cone shape hole away from described the second valve port diameter, described cone shape hole radially projecting becomes 120 ° of angles.
Above-mentioned setting, do not have when further guaranteeing low pressure relief valve work " chirp " noise.
As preferably, described the first spool is taper valve core; Described valve pocket internal clearance is equipped with the guide sleeve between described the first spool and described the first spring ordinatedly, and described the first spool is plugged on the first directional post in described guide sleeve with comprising the first taper and Spielpassung.
After adopting technique scheme to abate the noise, whole hydraulic integrated valve when work still can not eliminate fully chirp " noise; we find after repetition test, research, test, and high-pressure overflow valve working pressure originally is 7-8MPa, in this pressure range; there is no noise; now, along with the variation of service condition, the working pressure of high-pressure overflow valve is 12-16MPa; in this pressure range, noise has occurred; Therefore, we improve high-pressure overflow valve, change the first spool into taper valve core; Simultaneously, at described valve pocket internal clearance, guide sleeve between described the first spool and described the first spring is installed ordinatedly, the spring-force driven dual of the first spring is on guide sleeve, rather than directly contact with the first spool, simultaneously, be plugged in described guide sleeve to the first directional post Spielpassung of described the first spool, through above-mentioned setting, the noise that we have produced when having eliminated high-pressure overflow valve work has improved working efficiency.
As preferably, be provided with the second transition cylinder between described the second taper and described the second directional post; Described the second taper bottom surface diameter is less than described the second transition circle column diameter.
Above-mentioned setting makes the second transition cylinder and the second taper intersection form a prevent surface, produce when can effectively avoid overflow " chirp " noise.
As preferably, be provided with the First Transition cylinder between described the first taper and described the first directional post; The diameter of described First Transition cylinder and described the first taper bottom surface equal diameters are the 1.8-2.0 of described the first directional post diameter doubly; The length of described First Transition cylinder is the 1/5-1/4 of described the first directional post length.
Above-mentioned setting abates the noise effective.
As preferably, the 1.6-2.0 that described the second taper bottom surface diameter is described the second directional post diameter doubly; The length of described the second transition cylinder is 1.5 times of described First Transition cylinder length.
Above-mentioned setting abates the noise effective.
A kind of hydraulic integrated valve that includes above-mentioned flow structure for the reaper hydraulic integrated valve, comprise have filler opening, the valve body of return opening, high pressure spool chamber, low pressure spool chamber, hoist cylinder import, the import of left steering oil cylinder, the import of right steering oil cylinder and steering cylinder return opening, be equipped with on described valve body and turn to guiding valve, lifting guiding valve, Pilot operated check valve; When described lifting guiding valve is in original position, the filler opening of described lifting guiding valve and oil outlet are communicated with, the oil outlet of described lifting guiding valve and the described guiding valve filler opening that turns to are communicated with, and described high-pressure overflow valve is arranged in described high pressure spool chamber, and described low pressure relief valve is arranged in described low pressure spool chamber.
Beneficial effect of the present invention is:
Flow structure and hydraulic integrated valve for the reaper hydraulic integrated valve of the present invention, it is simple in structure, volume is little, compact structure, integrated height, install and convenient disassembly, in work, using process do not have " chirp " noise.
Description of drawings
The present invention is described further below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is B-B sectional view in Fig. 1;
Fig. 4 is the hydraulic schematic diagram of Fig. 1.
In figure:
The 1-high-pressure overflow valve, 101-valve pocket, 102-the first plug screw, 103-the first spring, 104-the first spool, 104a-the first taper, 104b-the first directional post, 104c-First Transition cylinder, 105-guide sleeve, 106-the first adjusting screw rod, 107-the first spring seat;
The 2-low pressure relief valve; The 201-valve seat, 202-the second plug screw, 202a-axially directed hole, 202b-spring mounting hole, 203-the second spring, 204-the second spool, 204a-the second taper, 204b-the second directional post, 204c-the second transition cylinder, 205-resilient guiding device;
The 3-valve body; The 301-filler opening, 302-return opening, 303-high pressure spool chamber, 304-low pressure spool chamber, the import of 305-hoist cylinder, the import of 306-left steering oil cylinder, the import of 307-right steering oil cylinder, 308-steering cylinder return opening;
4-turns to guiding valve;
5-lifting guiding valve;
The 6-Pilot operated check valve.
Embodiment
The following stated is only preferred embodiment of the present invention, is not that scope of the present invention is limited.
Embodiment sees accompanying drawing 1,2,3,4; A kind of for the reaper hydraulic integrated valve, comprise have filler opening 301, the valve body 3 of return opening 302, high pressure spool chamber 303, low pressure spool chamber 304, hoist cylinder import 305, left steering oil cylinder import 306, right steering oil cylinder import 307 and steering cylinder return opening 308, the flow structure that turns to guiding valve 4, lifting guiding valve 5, Pilot operated check valve 6 and be used for the reaper hydraulic integrated valve is installed on described valve body 3, and described flow structure for the reaper hydraulic integrated valve comprises high-pressure overflow valve 1 and low pressure relief valve 2; When described lifting guiding valve 5 is in original position, the filler opening of described lifting guiding valve 5 and oil outlet are communicated with, the oil outlet of described lifting guiding valve 5 and described guiding valve 4 filler openings that turn to are communicated with, described high-pressure overflow valve 1 is arranged in described high pressure spool chamber 303, and described low pressure relief valve 2 is arranged in described low pressure spool chamber 304.
the flow structure that is used for the reaper hydraulic integrated valve, comprise high-pressure overflow valve 1 and low pressure relief valve 2, described high-pressure overflow valve 1 comprises valve pocket 101, the first plug screw 102, the first spring 103 and is arranged on the first interior spool 104 of described valve pocket 101, be provided with pad between valve pocket 101 and the first plug screw 102, be bolted with the first adjusting screw rod 106 of adjusting described the first spring 103 on described the first plug screw 102, be provided with the first spring seat 107 between the first spring 103 and the first adjusting screw rod 106 in the first plug screw 102, described low pressure relief valve 2 comprises that valve seat 201, the second plug screw 202, the second the second spool 204, the first spools 104 and described the second spool 204 that spring 203 reaches and described valve seat 201 matches are taper valve core, described valve pocket 101 internal clearances are equipped with the guide sleeve 105 between described the first spool 104 and described the first spring 103 ordinatedly, described the first spool 104 is plugged on the first directional post 104b in described guide sleeve 105 with comprising the first taper 104a and Spielpassung, reduce preferably noise result in order to obtain, be provided with First Transition cylinder 104c between described the first taper 104a and described the first directional post 104b, the diameter of described First Transition cylinder 104c and described the first taper 104a bottom surface equal diameters, be the 1.8-2.0 of described the first directional post 104b diameter doubly, the length of described First Transition cylinder 104c is the 1/5-1/4 of described the first directional post 104b length, and the first directional post 104a length is 0.6-0.8 times of guide sleeve 105 length, better is 0.7 times, described the second plug screw 202 is provided with axially directed hole 202a, described the second spool 204 comprises the second taper 204a that matches with described valve seat 201 and is plugged on the second directional post 204b in described axially directed hole 202a, described the second spring 203 is sleeved on described the second directional post 204b, in order further to obtain reasonable noise reduction, reduce the machining accuracy of part, installation difficulty, be provided with the resilient guiding device 205 that matches with described the second directional post 204b in described axially directed hole 202a, general, described resilient guiding device 205 comprises seal ring or sealing gasket, seal ring can adopt GB, also can make by oneself, can adopt the O RunddichtringO, can adopt the Yx circle to wait other known seal ring, described axially directed hole 202a is provided with the spring mounting hole 202b that communicates with described the second plug screw 202 end faces, described seal ring or sealing gasket are arranged on described spring mounting hole 202b bottom surface, in present embodiment, what adopt is the O RunddichtringO, the O RunddichtringO can be for a plurality of, can be also one, valve pocket 101 comprises the valve port that matches with the first taper 104a, the reaming that communicates with valve port, and the pilot hole that communicates of reaming, and the countersinking that communicates of pilot hole, guide sleeve 105 is arranged in described pilot hole, do freely endwisely slipping in pilot hole, the length of guide sleeve 105 is between the 0.85-0.95 of pilot hole length, to guarantee noise reduction, further, the length of pilot hole is the 1/3-2/3 of valve pocket 101 length, and is better, is 1/2, in hydraulic integrated valve, the filler opening of low pressure relief valve is that the return opening with the lifting guiding valve communicates, if disconnect, the filler opening that low pressure relief valve directly is connected with valve body connects, the noise of low pressure relief valve disappears, and still, such change can not be satisfied the requirement of hydraulic integrated valve.
For further noise-decreasing, described valve seat 201 be provided with the second valve port 201a of matching with described the second taper 204a and and described the second valve port 201a communicate along with becoming gradually large cone shape hole 201b away from described the second valve port 201a diameter, described cone shape hole 201b radially projecting becomes 120 ° of angles; Be provided with the second transition cylinder 204c between described the second taper 204a and described the second directional post 204b; The second spring 203 1 ends act on the second transition cylinder 204c, and the other end do to insert in spring mounting hole 202b, act on spring mounting hole 202b bottom surface, and the length of described the second transition cylinder 204c is 1.5 times of described First Transition cylinder 104c length; The 2.5-3.0 that described the second transition cylinder 204 length are the second taper 204a length times, better is 2.7 times.
Further, described the second taper 204a bottom surface diameter is less than described the second transition cylinder 204c diameter; The 1.6-2.0 that described the second taper 204a bottom surface diameter is described the second directional post 204b diameter doubly to obtain reasonable reduction noise result, increases work efficiency.
Above explanation is only explanation of the invention, make the complete enforcement this programme of those of ordinary skills' energy, but be not the restriction to invention, those skilled in the art can make to the present embodiment the modification that there is no creative contribution as required after reading this specification, these are all not creative modifications.But as long as all be subject to the protection of Patent Law in claim scope of the present invention.
Claims (10)
1. be used for the flow structure of reaper hydraulic integrated valve, comprise high-pressure overflow valve (1) and low pressure relief valve (2), described high-pressure overflow valve (1) comprises valve pocket (101), the first plug screw (102), the first spring (103) and is arranged on interior the first spool (104) of described valve pocket (101), described low pressure relief valve (2) comprises valve seat (201), the second plug screw (202), the second spring (203) and the second spool (204) that matches with described valve seat (201), it is characterized in that: described the second spool (204) is taper valve core, described the second plug screw (202) is provided with axially directed hole (202a), described the second spool (204) comprises the second taper (204a) that matches with described valve seat (201) and is plugged on interior the second directional post (204b) in described axially directed hole (202a), described the second spring (203) is sleeved on described the second directional post (204b).
2. the flow structure for the reaper hydraulic integrated valve according to claim 1, is characterized in that: be provided with the resilient guiding device (205) that matches with described the second directional post (204b) in described axially directed hole (202a).
3. the flow structure for the reaper hydraulic integrated valve according to claim 2, it is characterized in that: described resilient guiding device (205) comprises seal ring or sealing gasket.
4. the flow structure for the reaper hydraulic integrated valve according to claim 3, it is characterized in that: described axially directed hole (202a) is provided with the spring mounting hole (202b) that communicates with described the second plug screw (202) end face, and described seal ring or sealing gasket are arranged on described spring mounting hole (202b) bottom surface.
5. the flow structure for the reaper hydraulic integrated valve according to claim 1, it is characterized in that: described valve seat (201) be provided with the second valve port (201a) of matching with described the second taper (204a) and and described the second valve port (201a) communicate along with becoming gradually large cone shape hole (201b) away from described the second valve port (201a) diameter, described cone shape hole (201b) radially projecting becomes 120 ° of angles.
6. according to claim 1 and 2 or 3 or 4 or 5 described flow structures for the reaper hydraulic integrated valve, it is characterized in that: described the first spool (104) is taper valve core; Described valve pocket (101) internal clearance is equipped with the guide sleeve (105) that is positioned between described the first spool (104) and described the first spring (103) ordinatedly, and described the first spool (104) is plugged on the first directional post (104b) in described guide sleeve (105) with comprising the first taper (104a) and Spielpassung.
7. the flow structure for the reaper hydraulic integrated valve according to claim 6, is characterized in that: be provided with the second transition cylinder (204c) between described the second taper (204a) and described the second directional post (204b); Described the second taper (204a) bottom surface diameter is less than described the second transition cylinder (204c) diameter.
8. the flow structure for the reaper hydraulic integrated valve according to claim 7, is characterized in that: be provided with First Transition cylinder (104c) between described the first taper (104a) and described the first directional post (104b); The diameter of described First Transition cylinder (104c) and described the first taper (104a) bottom surface equal diameters are the 1.8-2.0 of described the first directional post (104b) diameter doubly; The length of described First Transition cylinder (104c) is the 1/5-1/4 of described the first directional post (104b) length.
9. the flow structure for the reaper hydraulic integrated valve according to claim 8 is characterized in that: described the second taper (204a) bottom surface diameter be described the second directional post (204b) diameter 1.6-2.0 doubly; The length of described the second transition cylinder (204c) is 1.5 times of described First Transition cylinder (104c) length.
10. one kind includes the hydraulic integrated valve that is used for the flow structure of reaper hydraulic integrated valve as claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9, it is characterized in that: comprise the valve body (3) of have filler opening (301), return opening (302), high pressure spool chamber (303), low pressure spool chamber (304), hoist cylinder import (305), left steering oil cylinder import (306), right steering oil cylinder import (307) and steering cylinder return opening (308), be equipped with on described valve body (3) and turn to guiding valve (4), lifting guiding valve (5), Pilot operated check valve (6); When described lifting guiding valve (5) when being in original position, the filler opening of described lifting guiding valve (5) and oil outlet are communicated with, the oil outlet of described lifting guiding valve (5) and described guiding valve (4) filler opening that turns to are communicated with, described high-pressure overflow valve (1) is arranged in described high pressure spool chamber (303), and described low pressure relief valve (2) is arranged in described low pressure spool chamber (304).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310035623.8A CN103104570B (en) | 2013-01-30 | 2013-01-30 | For overflow structure and the hydraulic integrated valve of reaper hydraulic integrated valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310035623.8A CN103104570B (en) | 2013-01-30 | 2013-01-30 | For overflow structure and the hydraulic integrated valve of reaper hydraulic integrated valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103104570A true CN103104570A (en) | 2013-05-15 |
| CN103104570B CN103104570B (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310035623.8A Active CN103104570B (en) | 2013-01-30 | 2013-01-30 | For overflow structure and the hydraulic integrated valve of reaper hydraulic integrated valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711740A (en) * | 2013-12-25 | 2014-04-09 | 新魁液压技术有限公司 | Novel hydraulic control system for combine harvester |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193750A (en) * | 1992-12-22 | 1994-07-15 | Komatsu Ltd | Hydraulic valve device |
| CN2648149Y (en) * | 2003-07-01 | 2004-10-13 | 吴正平 | Direct-acting relief valve |
| CN201218248Y (en) * | 2008-06-18 | 2009-04-08 | 湖州生力液压有限公司 | Multifunctional integration composite valve |
| CN201232785Y (en) * | 2008-05-08 | 2009-05-06 | 周重威 | Ultra-high pressure overflow valve |
| CN101504018A (en) * | 2009-03-13 | 2009-08-12 | 湖州生力液压有限公司 | Lifting and steering hydraulic integrated valve with manual convenience |
| CN203098443U (en) * | 2013-01-30 | 2013-07-31 | 湖州生力液压有限公司 | Overflow structure used for hydraulic pile-up valve of harvester and hydraulic pile-up valve |
-
2013
- 2013-01-30 CN CN201310035623.8A patent/CN103104570B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193750A (en) * | 1992-12-22 | 1994-07-15 | Komatsu Ltd | Hydraulic valve device |
| CN2648149Y (en) * | 2003-07-01 | 2004-10-13 | 吴正平 | Direct-acting relief valve |
| CN201232785Y (en) * | 2008-05-08 | 2009-05-06 | 周重威 | Ultra-high pressure overflow valve |
| CN201218248Y (en) * | 2008-06-18 | 2009-04-08 | 湖州生力液压有限公司 | Multifunctional integration composite valve |
| CN101504018A (en) * | 2009-03-13 | 2009-08-12 | 湖州生力液压有限公司 | Lifting and steering hydraulic integrated valve with manual convenience |
| CN203098443U (en) * | 2013-01-30 | 2013-07-31 | 湖州生力液压有限公司 | Overflow structure used for hydraulic pile-up valve of harvester and hydraulic pile-up valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711740A (en) * | 2013-12-25 | 2014-04-09 | 新魁液压技术有限公司 | Novel hydraulic control system for combine harvester |
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| CN103104570B (en) | 2016-06-08 |
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