CN201218248Y

CN201218248Y - Multifunctional integration composite valve

Info

Publication number: CN201218248Y
Application number: CNU2008201200503U
Authority: CN
Inventors: 顾立峰; 朱辉; 徐寿国; 金征; 沈立峰; 陆跃德
Original assignee: HUZHOU SHENGLI HYDRAULIC CO Ltd
Current assignee: HUZHOU SHENGLI HYDRAULIC CO Ltd
Priority date: 2008-06-18
Filing date: 2008-06-18
Publication date: 2009-04-08
Anticipated expiration: 2018-06-18

Abstract

The utility model relates to a multifunctional integrated composite valve. A low-pressure relief valve, a high-pressure relief valve, a steering slide valve, a lifting slide valve and a hydraulic control one-way valve are arranged inside a valve body; each end face of the valve body is provided with a harvester cutting table hydraulic cylinder interface which is communicated with the hydraulic control one-way valve, a harvester steering hydraulic cylinder interface which is communicated with the steering slide valve, an interface which is connected with the oil-return port of the harvester steering hydraulic cylinder, and valve body oil-return box interfaces which are connected with the valves. The valve body is also provided with shunt valves which are respectively communicated with the lower-pressure relief valve, the high-pressure relief valve, the steering slide valve, the lifting slide valve and the oil inlet of the valve body via processing oil passages in the valve body. Due to the additional arrangement of the shunt valves, the hydraulic oil is enabled to enter the lifting slide valve and the steering slide valve separately or simultaneously, thereby a combine harvester cutting table and a complete machine can perform lifting and steering operations separately and simultaneously, and the operation efficiency of a combine harvester is greatly improved.

Description

Multi-functional integrated combination valve

Technical field

The utility model belongs to hydraulic transmission control technique field, particularly relates to combine-harvester and turns to hydraulic drive control device with taiwan cut off and landing.

Background technique

The taiwan cut off and landing of general combine-harvester and complete machine steering control mechanism all are discrete settings, and it is big to take volume, inconvenient operation.The applicant has designed a kind of " mono-lever control lifting, steering hydraulic integrated valve " (patent announcement CN2622451Y), offer 5 spool bore in this valve body, be separately installed with the spool that turns to guiding valve, lifting guiding valve, Pilot operated check valve and high low pressure relief valve, offer the technology oil duct that connects each valve pocket in the valve body simultaneously, be furnished with hydraulic oil import, oil sump tank interface, operating cylinder interface etc. on each end face of valve body.It is integrated into five monomer valve in the valve body, and with a handlebar operation, constitutes organic whole, compact structure, and volume is little, and installation, maintenance, use are all convenient.But this valve can only be carried out respectively and can not carry out simultaneously lifting and the operation that turns to control.

Summary of the invention

The purpose of this utility model is can carry out lifting and steering operation respectively for combine-harvester provides a kind of, can carry out the multi-functional integrated combination valve of lifting and steering operation again simultaneously.

The technical solution of the utility model is: it has the box-shaped valve body, in this valve body low pressure relief valve is installed, high-pressure overflow valve, turn to guiding valve, lifting guiding valve and Pilot operated check valve, offer the harvester header oil hydraulic cylinder interface that is connected with Pilot operated check valve on each end face of valve body, interface with the reaper hydraulic steering cylinder that turns to guiding valve to be connected, the interface that is connected with reaper hydraulic steering cylinder return opening, and the valve body oil sump tank interface that is connected with above-mentioned each valve, low pressure relief valve, the flow-off of high-pressure overflow valve is connected by the oil duct in the valve body, and diverter valve also is installed in the valve body, and diverter valve is respectively by technology oil duct and low pressure relief valve in the valve body, high-pressure overflow valve, turn to guiding valve, lifting guiding valve and valve body filler opening are connected.

The utility model is owing to set up diverter valve, make the hydraulic oil can be respectively or enter the lifting guiding valve simultaneously and turn to guiding valve, thereby realized that combine harvester cutting table and complete machine can carry out lifting and steering operation respectively, can carry out lifting and steering operation simultaneously again, improved the operating efficiency of combine-harvester greatly, the utility model is integrated into 6 monomer valve in the valve body simultaneously, adopt the interlock of universal head and single operation handle, monolever can be controlled in the comprehensive operation of circling round of 360 degree, descend, rising or turning velocity change with the swaying direction angle of handle, until stopping.Its compact structure, volume is little, installation, maintenance, uses all conveniently, and the utility model has also that oil leakage quantity is few, and stain resistance is strong, and speed of response is fast, reliable performance, advantages such as long service life.

Description of drawings

Fig. 1 is a plan view of the present utility model.

Fig. 2 is a plan view of the present utility model.

Fig. 3 is the A-A cross-sectional view of Fig. 2.

Fig. 4 is the B-B cross-sectional view of Fig. 2.

Fig. 5 is the C-C cross-sectional view of Fig. 1.

Fig. 6 is a working principle schematic representation of the present utility model.

Embodiment

Valve body 1 is whole box-shaped high-strength gray cast iron, sees Fig. 1, Fig. 2, and its superior posterior is provided with low pressure relief valve 2 and the high-pressure overflow valve 3 that vertically stretches out plane on the valve body 1 and is positioned at low, high-pressure overflow valve below, runs through the diverter valve 4 of valve body 1 left and right sides end face.See Fig. 3, diverter valve 4 inwalls radially offer three annular groove oil pocket a, b, c, are installed on the diverter valve spool 8 in this spool bore, and its middle part is provided with one section casing coupling 9, and two ends are equipped with plug screw 10.Be installed on spool in the low pressure relief valve 2 by valve seat 11, spool 12, spring 13, blind nut 14, pressure regulating screw 15, nut 16 is formed, the spool that is installed on high-pressure overflow valve is by valve seat 17, spool 18, spring 19, blind nut 20, pressure regulating screw 21, nut 22 is formed, the oil pocket b of diverter valve 4 is connected with valve body hydraulic fluid port P, the oil pocket a of diverter valve 4 is connected with low pressure relief valve 2, the oil pocket c of diverter valve 4 is connected with high-pressure overflow valve 3, low pressure relief valve 2, the flow-off of high-pressure overflow valve 3 is connected by valve body oil duct d and communicates with oil sump tank interface T by the valve body auxiliary hole.See Fig. 4, valve body 1 front upper part offers the spool bore that turns to guiding valve 5, and spool bore runs through the left and right side of valve body 1, and it radially offers six annular groove oil pocket e, f, g, h, i, j and a spring installation cavity 23.At spring installation cavity 23 oral areas, cap 24 is installed on the valve body end face, be installed on and turn to spool valve core bar 25 in this spool bore, its middle part is provided with casing coupling 26, casing coupling 27, casing coupling 28, be positioned on the valve core rod bar section of spring installation cavity 23 spring seat 29 and spring 30 are installed, it stretches out the outer end of valve body location piece 31 is installed, the other end stretches out valve body and is connected with operating handle, annular groove oil pocket j, f and spring seat installation cavity 23 are by valve body internal oil channel k, l, m, n communicates with valve body oil sump tank interface T, annular groove oil pocket i communicates with valve body hydraulic fluid port B1, annular groove oil pocket h communicates with the oil pocket a of diverter valve by auxiliary hole in the valve body, annular groove oil pocket g communicates with valve body hydraulic fluid port B2, and annular groove oil pocket e communicates with valve body hydraulic fluid port R.See Fig. 5, valve body lower portion offers the lifting guiding valve 6 that runs through the valve body front end and back end respectively and the spool bore of Pilot operated check valve 7, and its warp-wise of the spool bore of lifting guiding valve 6 offers five annular groove oil pocket o around spool bore, p, q, r, s, with a spring seat installation cavity 32, at spring seat installation cavity 32 oral areas, cap 33 is installed on the valve body end face, be installed on the lifting spool valve core bar 34 in this spool bore, its middle part is provided with casing coupling 37, casing coupling 38, wherein designed a tapering changeover portion 39 between casing coupling 37 and the lower valve core bar especially, one end of valve core rod 34, be arranged in spring installation cavity 32 spring seat 36 is installed, spring 35, it stretches out the outer end of valve body location piece 40 is installed, and the other end stretches out valve body 1 and is connected with operating handle.The check valve body spool that is installed in Pilot operated check valve 7 spool bore is made of hydraulic control push rod 41, spring 42, spool 43, valve pocket 44.Valve body 1 left side offers ceding of Taiwan oil hydraulic cylinder interface A, and this ceding of Taiwan oil hydraulic cylinder interface A is connected with Pilot operated check valve 7.Annular groove oil pocket o, s in the lifting guiding valve 6 and spring seat installation cavity 32 communicate with valve body oil sump tank interface T by auxiliary hole, annular groove oil pocket q communicates with annular groove oil pocket c in the diverter valve 4 by auxiliary hole, and annular groove oil pocket r, p are connected with Pilot operated check valve 7, hydraulic control push rod 41 oil pocket V respectively by oil duct u, t in the valve body.

The utility model is installed on the rice wheat combine harvester, during use under normal conditions, turn to the spool of guiding valve 5 and lifting guiding valve 6 all to be in meta, the hydraulic oil that comes out from oil hydraulic pump from valve body hydraulic fluid port P enter the oil pocket b of diverter valve 4, again by the diverter valve spool, be diverted to oil pocket a, c, the hydraulic oil flow that is diverted to oil pocket a is to the oil pocket h that turns to guiding valve 5, and this moment, oil pocket h communicated with oil pocket j, arrive valve body hydraulic fluid port T oil sump tank, system unloaded by auxiliary hole; Be diverted to the oil pocket q of the hydraulic oil flow of oil pocket c to lifting guiding valve 6, this moment, oil pocket q communicated with oil pocket o, arrived valve body hydraulic fluid port T oil sump tank, system unloaded by auxiliary hole.See Fig. 5, when the manipulation operations bar makes lifting guiding valve 6 valve core rods 34 forward during displacement, its casing coupling 37 is shifted to oil pocket r, q, the annular groove oil pocket c of hydraulic oil in diverter valve 4 flows to oil pocket q, r, and enter Pilot operated check valve 7 through oil duct u, and backing down its spool 43, hydraulic oil enters ceding of Taiwan oil hydraulic cylinder 45 through valve body interface A, promote hydraulic cylinder piston the ceding of Taiwan is promoted, the maximum pressure of hydraulic oil is set up by high-pressure overflow valve 3 in the ceding of Taiwan oil hydraulic cylinder 45.Otherwise the ceding of Taiwan is descended, then the manipulation operations bar moves lifting guiding valve 6 valve core rods 34 backward, its casing coupling 38 moves to oil pocket p, between the q, hydraulic oil flows to oil pocket q from the valve body oil inlet P, p also enters the oil pocket V of Pilot operated check valve 7 through oil duct t, top hydraulic control push rod 41 backward, open the spool 43 of Pilot operated check valve 7, so the hydraulic oil in the ceding of Taiwan oil hydraulic cylinder 45 is through valve body interface A, the oil duct u of Pilot operated check valve 7 flows to the oil pocket r of lifting guiding valve 6, tapering changeover portion 39 on valve core rod 34 flows to oil pocket s again, get back to fuel tank by auxiliary hole to valve body hydraulic fluid port T, the ceding of Taiwan descends, because be communicated with the valve core rod section of oil pocket r and oil pocket s this moment is tapering transition section 39, therefore along with the downward passing of valve core rod 34, the area of tapering changeover portion 39 is increasing and changing flow area gradually, the flow of control hydraulic oil from oil pocket r to oil pocket s, thus the speed that the ceding of Taiwan descends controlled stably.See Fig. 4, manipulation turns to the valve core rod 25 of guiding valve 5 to move right, and this moment, its casing coupling 27 was displaced to earlier between oil pocket h, the g, and hydraulic oil enters into oil pocket h, g through the oil pocket a of diverter valve 4, flows to valve body hydraulic fluid port B2 through oil duct again, enters reaper hydraulic steering cylinder 46.Hydraulic steering cylinder 46 once moves, the oil return of hydraulic steering cylinder 46 flows to oil pocket e from the oil pocket f of oil duct through turning to guiding valve 5, and this moment, casing coupling 26 was between oil pocket e, the f, and oil pocket e, f communicate, flow to valve body hydraulic fluid port T oil sump tank by auxiliary hole, thereby reaper is done turning to than long radius; Turn to the valve core rod 25 of guiding valve 5 to be moved further to the right, the e chamber is closed, at this moment the oil return of hydraulic steering cylinder 46 can not be from valve body hydraulic fluid port R through oil pocket e to oil pocket f, also just can not oil return, the oil pressure in the hydraulic steering cylinder 46 rise, hydraulic steering cylinder 46 secondary actions, when oil pressure rises to set pressure above low pressure relief valve 2, low pressure relief valve is opened, and unnecessary fluid is through valve body hydraulic fluid port T oil sump tank, and this moment, reaper was done turning to of minor radius.Turn to the valve core rod 25 of guiding valve 5 to be moved to the left otherwise handle, then reaper is done and above-mentioned opposite directional steering.The valve rod Duan Shangjun of the valve core rod 25 that turns to guiding valve 5 in diagram oil pocket e both sides fallen a cone angle, like this, when valve core rod 25 is mobile to the left or to the right, it closes oil pocket e is progressive process, no hydraulic pressure impacts, oil pressure in the hydraulic steering cylinder 46 rises steadily, by the size of manipulation operating handle may command hydraulic steering cylinder 46 oil pressure, thus the size of control reaper turning radius.

Claims

1. multi-functional integrated combination valve, has box-shaped valve body (1), low pressure relief valve (2) is installed in this valve body, high-pressure overflow valve (3), turn to guiding valve (5), lifting guiding valve (6) and Pilot operated check valve (7), offer harvester header oil hydraulic cylinder (45) interface (A) that is connected with Pilot operated check valve (7) on each end face of valve body, interface (B1) with the reaper hydraulic steering cylinder (46) that turns to guiding valve (5) to be connected, (B2) interface (R) that is connected with reaper hydraulic steering cylinder return opening, and the valve body oil sump tank interface (T) that is connected with above-mentioned each valve, low pressure relief valve (2), the flow-off of high-pressure overflow valve (3) is connected by the oil duct in the valve body, it is characterized in that also being equipped with in the valve body (1) diverter valve (4), diverter valve (4) is respectively by technology oil duct and low pressure relief valve (2) in the valve body, high-pressure overflow valve (3), turn to guiding valve (5), lifting guiding valve (6) and valve body filler opening (P) are connected.

2. by the described multi-functional integrated combination valve of claim 1, diverter valve (4) the spool bore inwall that it is characterized in that running through the left and right sides end face of valve body (1) radially offers three annular groove oil pocket (a) and (b), (c), be installed on the diverter valve spool (8) in this spool bore, its middle part is provided with one section casing coupling (9), two ends are equipped with plug screw (10), annular groove oil pocket (b) is connected with valve body hydraulic fluid port (P), annular groove oil pocket (a) is with low pressure relief valve (2) and turn to guiding valve (5) to be connected, and annular groove oil pocket (c) is connected with high-pressure overflow valve (3) and lifting guiding valve (6).

3. by the described multi-functional integrated combination valve of claim 1, it is characterized in that turning to the spool bore of guiding valve (5) to run through the front upper part left and right side of valve body (1), it radially offers six annular groove oil pockets (e), (f), (g), (h), (i), (j) and a spring installation cavity (23), at spring installation cavity (23) oral area, cap (24) is installed on the valve body end face, be installed on and turn to spool valve core bar (25) in this spool bore, its middle part is provided with casing coupling (26), casing coupling (27), casing coupling (28), be positioned on the valve core rod bar section of spring installation cavity (23) spring seat (29) and spring (30) are installed, it stretches out the outer end of valve body location piece (31) is installed, the other end stretches out valve body and is connected with operating handle, annular groove oil pocket (j), (f) and spring seat installation cavity (23) by valve body internal oil channel (k), (l), (m), (n) communicate with valve body oil sump tank interface (T), annular groove oil pocket (i) communicates with valve body hydraulic fluid port (B1), annular groove oil pocket (h) communicates with the oil pocket (a) of diverter valve by auxiliary hole in the valve body, and annular groove oil pocket (g) communicates with valve body hydraulic fluid port (b2).

4. by the described multi-functional integrated combination valve of claim 1, it is characterized in that lifting guiding valve (6) is by the spool bore through valve body (1) bottom front/rear end, and be installed on that valve core rod (34) in this spool bore forms, the spool bore warp-wise offers five annular groove oil pockets (o) around spool bore, (p), (q), (r), (s), with a spring seat installation cavity (32), at spring seat installation cavity (32) oral area, cap (33) is installed on the valve body end face, be installed on the lifting spool valve core bar (34) in this spool bore, its middle part is provided with casing coupling (37), casing coupling (38), one end of valve core rod (34), be arranged in spring installation cavity (32) spring seat (36) is installed, spring (35), it stretches out the outer end of valve body location piece (40) is installed, and the other end stretches out valve body (1) and is connected with operating handle.

5. by the described multi-functional integrated combination valve of claim 4, it is characterized in that being provided with tapering changeover portion (39) between the casing coupling (37) of lifting spool valve core bar (34) and the upper valve core bar.

6. by the described multi-functional integrated combination valve of claim 1, it is characterized in that Pilot operated check valve (7) is by the spool bore through valve body (1) bottom front/rear end, and be installed on that check valve body spool in this spool bore forms, the check valve body spool is made of hydraulic control push rod (41), spring (42), spool (43), valve pocket (44), and Pilot operated check valve (7), hydraulic control push rod (41) oil pocket (v) are connected with annular groove oil pocket (r), (p) of lifting guiding valve (6) respectively by oil duct (u), (t) in the valve body.