CN102086790A - Hydraulic valve mechanism - Google Patents
Hydraulic valve mechanism Download PDFInfo
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- CN102086790A CN102086790A CN2009102503790A CN200910250379A CN102086790A CN 102086790 A CN102086790 A CN 102086790A CN 2009102503790 A CN2009102503790 A CN 2009102503790A CN 200910250379 A CN200910250379 A CN 200910250379A CN 102086790 A CN102086790 A CN 102086790A
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Abstract
The invention provides a hydraulic valve mechanism belonging to the field of motors. The hydraulic valve mechanism structurally comprises a cam, a hydraulic cylinder body, a downlink hydraulic cylinder, an uplink hydraulic cylinder, a hydraulic piston, a valve, a valve rod, a valve seat, an air duct, a rotary valve, a downlink hydraulic cylinder oil inlet duct, a downlink hydraulic cylinder oil discharge duct, an uplink hydraulic cylinder oil inlet duct, an uplink hydraulic cylinder oil discharge duct, a cushion pad, a rotary valve shell, and the like, wherein the hydraulic cylinders include both the downlink hydraulic cylinder and the uplink hydraulic cylinder and are bidirectional, that is to say, the hydraulic piston is pushed to move up and down by hydraulic oil; a cam shaft and the rotary valve are integrated and can also be separated; the lower part of the downlink hydraulic cylinder is provided with an oil leakage port; and the lower part of the uplink hydraulic cylinder is provided with the cushion pad. The valve is faster opened with the pressure increase of the hydraulic oil.
Description
The invention belongs to engine art.
Because in the past the most successful engine air valve device was the cam valve mechanism, belong to pure mechanical valves mechanism, can't regulate the time of valve opening maximum, this kind hydraulic valve of the present invention mechanism can be by the control hydraulic fluid pressure
Reach the time of regulating the valve opening maximum.
Its main motion parts is made up of parts such as cam, hydraulic cylinder, hydraulic piston, valve, changeover valves, and hydraulic piston effect by hydraulic pressure in oil hydraulic cylinder makes the valve folding, and hydraulic pressure plays a major role when valve is worked, and cam helps out.
The objective of the invention is the problem that to regulate the time of valve opening maximum for engine air valve device before solving, can reduce Returnning spring elasticity simultaneously or without Returnning spring.
The structure of this kind hydraulic valve mechanism comprises: compositions such as cam, camshaft, hydraulic cylinder, descending oil hydraulic cylinder, up oil hydraulic cylinder, hydraulic piston, valve, valve stem, valve seat, air flue, changeover valve, descending oil hydraulic cylinder oil input channel, descending oil hydraulic cylinder oil expulsion channel, up oil hydraulic cylinder oil input channel, up oil hydraulic cylinder oil expulsion channel, cushion pad, changeover valve housing, fixing pin, Returnning spring, last valve pedestal and following valve seat body.Oil hydraulic cylinder be two-way be that hydraulic piston moves up and down and all promoted by hydraulic oil, existing descending oil hydraulic cylinder has up oil hydraulic cylinder again, camshaft and changeover valve are one, descending cylinder lower has drain tap, up cylinder lower has cushion pad, cushion pad can be a rubber, spring also can be other padded coaming, as: asbestos, wet goods, hydraulic piston is fixedlyed connected with valve stem, the changeover valve oil-feed tank that descending oil hydraulic cylinder oil input channel is arranged on the changeover valve, the changeover valve oil-discharge trough of descending oil hydraulic cylinder oil expulsion channel, the changeover valve oil-feed tank of up oil hydraulic cylinder oil input channel, the changeover valve oil-discharge trough of up oil hydraulic cylinder oil expulsion channel, cam is fixedlyed connected or one with camshaft, motor changes two circle camshafts and changeover valve all turns around, valve can be that the air intake valve of motor also can be the drain tap of motor, air flue can be that the intake duct of motor also can be the air outlet flue of motor, and valve and valve stem are one.Special case one: changeover valve and camshaft are splits.Special case two: do not have Returnning spring, the closing of valve independently promotes hydraulic piston by hydraulic oil and finishes.The working principle of this kind hydraulic valve mechanism: along with the rotation of changeover valve, the changeover valve oil-feed tank of descending oil hydraulic cylinder oil input channel is connected descending oil hydraulic cylinder oil input channel, hydraulic oil is by descending oil hydraulic cylinder oil input channel, the changeover valve oil-feed tank of descending oil hydraulic cylinder oil input channel enters descending oil hydraulic cylinder, promote hydraulic piston and drive the valve stem and the valve of fixedlying connected descending with hydraulic piston, air flue is opened, the changeover valve oil-discharge trough of descending oil hydraulic cylinder oil expulsion channel leaves descending oil hydraulic cylinder oil expulsion channel simultaneously, descending oil hydraulic cylinder oil expulsion channel is closed, the changeover valve oil-feed tank 35 of up oil hydraulic cylinder oil input channel leaves up oil hydraulic cylinder oil input channel 22, up oil hydraulic cylinder oil input channel 22 is cut off, the changeover valve oil-discharge trough of up oil hydraulic cylinder oil expulsion channel is connected up oil hydraulic cylinder oil expulsion channel, and the hydraulic oil in the up oil hydraulic cylinder is released up oil hydraulic cylinder oil expulsion channel by hydraulic piston; Behind the descending drain tap excessively of hydraulic piston, the hydraulic oil part is discharged from drain tap, and by pressure release, hydraulic piston touch stop behind the cushion pad descending, trace is up under the effect of Returnning spring, stifledly again goes up that to be pushed away trace by hydraulic oil behind the drain tap descending, touch stop again behind the cushion pad descending, hydraulic piston trace vibration repeatedly like this, valve reaches the aperture maximum; Along with being rotated further of changeover valve, the changeover valve oil-feed tank of descending oil hydraulic cylinder oil input channel leaves descending oil hydraulic cylinder oil input channel, descending oil hydraulic cylinder oil input channel is closed, the changeover valve oil-discharge trough of descending oil hydraulic cylinder oil expulsion channel is connected descending oil hydraulic cylinder oil expulsion channel simultaneously, the changeover valve oil-feed tank of up oil hydraulic cylinder oil input channel is connected up oil hydraulic cylinder oil input channel, hydraulic oil enters up oil hydraulic cylinder, hydraulic oil promotion hydraulic piston is up and the promotion valve stem drives valve and last valve pedestal is up, last valve pedestal props up cam and along with the cam summit is up, hydraulic piston is released descending oil hydraulic cylinder oil expulsion channel with the hydraulic oil in the descending oil hydraulic cylinder simultaneously, last valve pedestal up until valve props up valve seat by the cam band, air flue is sealed in valve-closing.The working principle of special case one is same as described above.The working principle of special case two is compared with above-mentioned working principle just: behind the descending drain tap excessively of hydraulic piston, hydraulic oil part is discharged from drain tap, and by pressure release, hydraulic piston touch stop behind the cushion pad descending, do not had the effect of Returnning spring, all the other processes are identical.
Owing to adopted structure of the present invention, make this kind motor have following beneficial effect to be:
Faster along with the increase valve opening of hydraulic fluid pressure.
Below accompanying drawing is described:
The structural drawing of this kind of Fig. 1 hydraulic valve mechanism;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is that changeover valve and camshaft are the structural drawing of this kind hydraulic valve mechanism of split in the special case one;
Structural drawing when Fig. 4 is the valve-closing of this kind hydraulic valve mechanism;
Fig. 5 is the structural drawing that does not have this kind hydraulic valve mechanism of Returnning spring in the special case two;
Fig. 6 is the A-A sectional view of Fig. 3;
Structural drawing when Fig. 7 is the valve-closing of this kind hydraulic valve mechanism in the special case one;
Fig. 8 is the B-B sectional view of Fig. 3;
Fig. 9 is the schematic representation that engine intake valve, exhauxt valve opens and shut-in time is reflected in the angle range on the camshaft;
Figure 10 is the schematic representation of descending oil hydraulic cylinder oil input channel changeover valve oil-feed tank position when connecting;
Figure 11 is the schematic representation that descending oil hydraulic cylinder oil input channel rigidly connects changeover valve oil-feed tank position when leading to;
Figure 12 is the schematic representation of descending oil hydraulic cylinder oil input channel changeover valve oil-feed tank position when just having closed;
Figure 13 be the changeover valve oil-feed tank when the position of Figure 10, the schematic representation of cam position;
Figure 14 be the changeover valve oil-feed tank when the position of Figure 11, the schematic representation of cam position;
Figure 15 be the changeover valve oil-feed tank when the position of Figure 12, the schematic representation of cam position;
Figure 16 is a descending oil hydraulic cylinder oil expulsion channel when connecting, the schematic representation of changeover valve oil-discharge trough position;
Figure 17 is the schematic representation that descending oil hydraulic cylinder oil expulsion channel rigidly connects changeover valve oil-discharge trough position when leading to;
Figure 18 is the schematic representation of descending oil hydraulic cylinder oil expulsion channel changeover valve oil-discharge trough position when just having closed;
Figure 19 be the changeover valve oil-discharge trough when the position of Figure 16, the schematic representation of cam position;
Figure 20 be the changeover valve oil-discharge trough when the position of Figure 17, the schematic representation of cam position;
Figure 21 be the changeover valve oil-discharge trough when the position of Figure 18, the schematic representation of cam position;
Figure 22 is the schematic representation of up oil hydraulic cylinder oil input channel changeover valve oil-feed tank position when connecting;
Figure 23 is the schematic representation that up oil hydraulic cylinder oil input channel rigidly connects changeover valve oil-feed tank position when leading to;
Figure 24 is the schematic representation of up oil hydraulic cylinder oil input channel changeover valve oil-feed tank position when just having closed;
Figure 25 be the changeover valve oil-feed tank when the position of Figure 22, the schematic representation of cam position;
Figure 26 be the changeover valve oil-feed tank when the position of Figure 23, the schematic representation of cam position;
Figure 27 be the changeover valve oil-feed tank when the position of Figure 24, the schematic representation of cam position;
Figure 28 is a up oil hydraulic cylinder oil expulsion channel when connecting, the schematic representation of changeover valve oil-discharge trough position;
Figure 29 is the schematic representation that up oil hydraulic cylinder oil expulsion channel rigidly connects changeover valve oil-discharge trough position when leading to;
Figure 30 is the schematic representation of up oil hydraulic cylinder oil expulsion channel changeover valve oil-discharge trough position when just having closed;
Figure 31 be the changeover valve oil-discharge trough when the position of Figure 28, the schematic representation of cam position;
Figure 32 be the changeover valve oil-discharge trough when the position of Figure 29, the schematic representation of cam position;
Figure 33 be the changeover valve oil-discharge trough when the position of Figure 30, the schematic representation of cam position.
In each figure: the 1-cam; The 2-camshaft; The 3-changeover valve; The 4-pin; The last valve pedestal of 5-; The 6-Returnning spring; The 7-fixing pin; The 8-hydraulic cylinder; The 9-hydraulic piston; The 10-cushion pad; The 11-valve stem; The 12-engine cylinder; The 13-valve seat; 14-valve stem axle sleeve; The 15-air flue; The 16-valve; The descending oil hydraulic cylinder of 17-; The descending oil hydraulic cylinder oil input channel of 18-; The descending oil hydraulic cylinder oil expulsion channel of 19-; The up oil hydraulic cylinder of 20-; The up oil hydraulic cylinder oil expulsion channel of 21-; The up oil hydraulic cylinder oil input channel of 22-; Valve seat body under the 23-; The 24-drain tap; 25-hydraulic oil; The changeover valve oil-discharge trough of the up oil hydraulic cylinder oil expulsion channel of 26-; The arrow of 27-signal engine intake valve opening and closing camshaft degree scope; The arrow of 28-signal engine exhaust port opening and closing camshaft degree scope; 29-engine piston top dead center; 30-indicates the arrow of sense of rotation; The changeover valve oil-feed tank of the descending oil hydraulic cylinder oil input channel of 31-; 32-engine piston lower dead center; The changeover valve oil-discharge trough of the descending oil hydraulic cylinder oil expulsion channel of 33-; 34-changeover valve housing; The changeover valve oil-feed tank of the up oil hydraulic cylinder oil input channel of 35-.
In Fig. 1, Fig. 2, Fig. 3, Fig. 4 as seen, descending oil hydraulic cylinder 17, up oil hydraulic cylinder 20 and hydraulic piston 9 are arranged, pin 4 fixedly connected cam 1 and camshafts 2, valve stem 11 all uses fixing pin 7 to fixedly connected with following valve seat body 23, valve stem 11 and last valve pedestal 5, valve stem 11 and hydraulic piston 9.Camshaft 2 and changeover valve 3 are one, and with speed rotation, have guaranteed that last valve pedestal 5 can prop up cam 1 when up at the very start.Drain tap 24 is arranged at descending oil hydraulic cylinder 17 bottoms, and drain tap 24 is opened hydraulic oil 25 pressure releases in that hydraulic piston 9 is descending when touching cushion pad 10.
As seen, special case two this kind hydraulic valve mechanisms do not have Returnning spring 6 in Fig. 5, and closing by the hydraulic oil 25 independent hydraulic pistons 9 that promote of valve finished.
In Fig. 6, Fig. 7, Fig. 8 as seen, special case one this kind hydraulic valve mechanism, changeover valve 3 and camshaft 2 are splits, but their still constant speed rotations, and all are 1/2 of engine spindle rotating speeds.
As seen, engine intake valve, exhauxt valve opens and shut-in time are reflected in the angle range on the camshaft 2 in Fig. 9.
As seen, descending oil hydraulic cylinder oil input channel 18 is connected, the position at changeover valve oil-feed tank 31 places of descending oil hydraulic cylinder oil input channel and the position of corresponding cam 1 during opening and closing in Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15.
As seen, descending oil hydraulic cylinder oil expulsion channel 19 is connected, the position at changeover valve oil-discharge trough 33 places of descending oil hydraulic cylinder oil expulsion channel and the position of corresponding cam 1 during opening and closing in Figure 16, Figure 17, Figure 18, Figure 19, Figure 20, Figure 21.
As seen, up oil hydraulic cylinder oil input channel 22 is connected, the position at changeover valve oil-feed tank 35 places of up oil hydraulic cylinder oil input channel and the position of corresponding cam 1 during opening and closing in Figure 22, Figure 23, Figure 24, Figure 25, Figure 26, Figure 27.
As seen, up oil hydraulic cylinder oil expulsion channel 21 is connected, the position at changeover valve oil-discharge trough 26 places of up oil hydraulic cylinder oil expulsion channel and the position of corresponding cam 1 during opening and closing in Figure 28, Figure 29, Figure 30, Figure 31, Figure 32, Figure 33.
In each figure, the working principle of this kind hydraulic valve mechanism: along with the rotation of changeover valve 3, the changeover valve oil-feed tank 31 of descending oil hydraulic cylinder oil input channel is connected descending oil hydraulic cylinder oil input channel 18, hydraulic oil 25 is by descending oil hydraulic cylinder oil input channel 18, the changeover valve oil-feed tank 31 of descending oil hydraulic cylinder oil input channel enters descending oil hydraulic cylinder 17, promote hydraulic piston 9 and drive the valve stem 11 and the valve 16 of fixedlying connected descending with hydraulic piston 9, air flue 15 is opened, the changeover valve oil-discharge trough 33 of descending oil hydraulic cylinder oil expulsion channel leaves descending oil hydraulic cylinder oil expulsion channel 19 simultaneously, descending oil hydraulic cylinder oil expulsion channel 19 is cut off, the changeover valve oil-feed tank 35 of up oil hydraulic cylinder oil input channel leaves up oil hydraulic cylinder oil input channel 22, up oil hydraulic cylinder oil input channel 22 is cut off, the changeover valve oil-discharge trough 26 of up oil hydraulic cylinder oil expulsion channel is connected up oil hydraulic cylinder oil expulsion channel 21, and the hydraulic oil 25 in the up oil hydraulic cylinder 20 is released up oil hydraulic cylinder oil expulsion channel 21 by hydraulic piston 9; Behind hydraulic piston 9 descending drain taps 24 excessively, hydraulic oil 25 parts are discharged from drain tap 24, and by pressure release, hydraulic piston 9 touch stop behind the cushion pad 10 descending, trace is up under the effect of Returnning spring 6, stifledly again goes up drain tap 24 backs to be pushed away trace by hydraulic oil 25 descending, touch stop again behind the cushion pad 10 descending, hydraulic piston 9 trace vibration repeatedly like this, valve 16 reaches the aperture maximum; Along with being rotated further of changeover valve 3, the changeover valve oil-feed tank 31 of descending oil hydraulic cylinder oil input channel leaves descending oil hydraulic cylinder oil input channel 18, descending oil hydraulic cylinder oil input channel 18 is cut off, the changeover valve oil-discharge trough 33 of descending oil hydraulic cylinder oil expulsion channel is connected descending oil hydraulic cylinder oil expulsion channel 19 simultaneously, the changeover valve oil-discharge trough 26 of up oil hydraulic cylinder oil expulsion channel leaves up oil hydraulic cylinder oil expulsion channel 21, up oil hydraulic cylinder oil expulsion channel 21 is cut off, the changeover valve oil-feed tank 35 of up oil hydraulic cylinder oil input channel is connected up oil hydraulic cylinder oil input channel 22, hydraulic oil 25 enters up oil hydraulic cylinder 20, it is up and promote that valve stem 11 drives valves 16 and last valve pedestal 5 is up that hydraulic oil 25 promotes hydraulic piston 9, last valve pedestal 5 props up cam 1 and along with the summit of cam 1 is up, hydraulic piston 9 is released descending oil hydraulic cylinder oil expulsion channel 19 with the hydraulic oil in the descending oil hydraulic cylinder 17 25 simultaneously, last valve pedestal 5 is being with up by cam 1, until valve 16 props up valve seat 13, valve 16 is closed, and seals air flue 15.The working principle of special case one is same as described above.The working principle of special case two is compared with above-mentioned working principle just: behind hydraulic piston 9 descending drain taps 24 excessively, hydraulic oil 25 parts are discharged from drain tap 24, and by pressure release, hydraulic piston 9 touch stop behind the cushion pad 10 descending, do not had the effect of Returnning spring 6, all the other processes are identical.
Claims (2)
1. the invention provides a kind of hydraulic valve mechanism, it comprises: valve, valve stem, valve seat, air flue, cushion pad, changeover valve housing, fixing pin, Returnning spring, go up valve pedestal and following valve seat body etc.; It is characterized in that: it also comprises cam, camshaft, hydraulic cylinder, descending oil hydraulic cylinder, up oil hydraulic cylinder, hydraulic piston.
2. hydraulic valve according to claim 1 mechanism, it is characterized in that: it has changeover valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102503790A CN102086790A (en) | 2009-12-07 | 2009-12-07 | Hydraulic valve mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102503790A CN102086790A (en) | 2009-12-07 | 2009-12-07 | Hydraulic valve mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102086790A true CN102086790A (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102503790A Pending CN102086790A (en) | 2009-12-07 | 2009-12-07 | Hydraulic valve mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102086790A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298544A (en) * | 2014-11-01 | 2016-02-03 | 熵零股份有限公司 | Control system for congenetic fluid |
-
2009
- 2009-12-07 CN CN2009102503790A patent/CN102086790A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298544A (en) * | 2014-11-01 | 2016-02-03 | 熵零股份有限公司 | Control system for congenetic fluid |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110608 |