CN203756627U - Hydraulic control system for fabric chute inclined angle location accuracy - Google Patents
Hydraulic control system for fabric chute inclined angle location accuracy Download PDFInfo
- Publication number
- CN203756627U CN203756627U CN201420140599.4U CN201420140599U CN203756627U CN 203756627 U CN203756627 U CN 203756627U CN 201420140599 U CN201420140599 U CN 201420140599U CN 203756627 U CN203756627 U CN 203756627U
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- oil
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- operated check
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- 239000004744 fabric Substances 0.000 title abstract description 5
- 239000003921 oil Substances 0.000 claims abstract description 159
- 230000001360 synchronised effect Effects 0.000 claims abstract description 31
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims description 40
- 239000000446 fuel Substances 0.000 claims description 15
- 239000002828 fuel tank Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000011068 loading method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a hydraulic control system for fabric chute inclined angle location accuracy. The system is connected with three oil cylinders for driving the fabric chute to incline. The system comprises a hydraulic synchronous motor with three coaxial equal-displacement diverters, and the three diverters are connected with rod cavities of the three oil cylinders through branch oil tubes respectively or are connected with rodless cavities of the three oil cylinders through branch oil tubes respectively to enable the three oil cylinders to supply oil in equal quantity. According to the hydraulic control system, the hydraulic synchronous motor is used for outputting equal-flow hydraulic oil, so that the three oil cylinders is synchronous and separated, a supporting ring driven by the three oil cylinders cannot incline, abrasion between a guide wheel and a guide rail is prevented, and the distributing device service life is prolonged.
Description
Technical field
The utility model relates to a kind of hydraulic control system, relates in particular to a kind of hydraulic control system for bell-less charge-distributing chute on furnace top inclination angle positioning precision.Belong to technical field of blast furnace ironmaking.
Background technique
Fascinating of distributor chute without bell furnace top distributing gear adopts three oil cylinder hydraulics to drive at present.As shown in Figure 1, three uniform 120 degree of oil cylinder 101 are connected on a backing ring 102 (mechanical synchronization), and backing ring 102 moves up and down and drives distributor chute 103 to fascinate.Distributor chute 103 fascinates for original mechanical synchronization: for the less situation in distributor chute 103 inclination angles, three oil cylinders 101 are stressed identical or while being more or less the same, the synchronous balance that guarantees backing ring 102 of oil cylinder 101, thus guarantee inclination angle positioning precision.And for requiring the larger distributor in distributor chute 103 inclination angles, the stressed difference of three oil cylinders 101 large (being unbalance loading), three asynchronous backing rings 102 that make of oil cylinder 101 occur tilting to cause inclination angle positioning precision to occur deviation.During distributor chute 103 rotation, backing ring 102 unbalance loadings make the fluid generation play of intercommunication of the rod chamber of three oil cylinders 101, also there is play in the fluid of rodless cavity intercommunication, thereby make three oil cylinder 101 displacements S1=S2+S3 (S1, S2, S3 are respectively three oil cylinder variable quantities that section moves sometime) that changes, thereby having caused backing ring 102 to tilt, there is fluctuation in distributor chute 103 inclination angles.
During 103 rotation of existing structure distributor chute, inclination angle fluctuation size is mainly limited with contacting of guide rail 105 by guide wheel 104, and this is determined by guide wheel 104, guide rail 105 gap lengths and backing ring 102 unbalance loadings.During initial use, guide wheel 104 and guide rail 105 gaps are less, and distributor chute 103 rotates a circle fluctuation angle in 0.1 degree left and right; Along with distributor life cycle lengthens, backing ring 102 tilts to cause the wearing and tearing of guide wheel 104 and guide rail 105 to strengthen (guide wheel, guide clearance strengthen), the fluctuation angle that distributor chute 103 rotates a circle also strengthens thereupon, even, more than 0.2 degree, can not meet the requirement of blast furnace site technique.
Model utility content
In view of the above-mentioned problems in the prior art, technical problem to be solved in the utility model is to provide a kind of hydraulic control system for distributor chute inclination angle positioning precision, it can guarantee the synchronism of three oil cylinders, to reduce due to backing ring the tilt guide wheel cause and the wearing and tearing of guide rail, thus the working life of improving distributor.
In order to solve the problems of the technologies described above, the utility model has adopted following technological scheme: for the hydraulic control system of distributor chute inclination angle positioning precision, its with for driving three oil cylinders that distributor chute fascinates to be connected, described hydraulic control system comprises the hydraulic synchronous motor of the shunt with three discharge capacities such as coaxial, and three described shunts are connected with the rod chamber of three oil cylinders by oil pipe along separate routes respectively or three described shunts pass through respectively shunt oil pipe and are connected with the rodless cavity of three oil cylinders so that three described oil cylinder equivalent fuel feeding.
As preferably, described hydraulic control system also comprises Proportional valve, the first Pilot operated check valve and the second Pilot operated check valve;
The hydraulic fluid port P of described Proportional valve is connected with high-pressure and hydraulic oil sources, the hydraulic fluid port T of described Proportional valve is connected with hydraulic station return tube, the hydraulic fluid port A of described Proportional valve is connected with three shunts of described hydraulic synchronous motor by the first pipeline simultaneously, three shunts of described hydraulic synchronous motor are connected with the rodless cavity of three described oil cylinders respectively, and the hydraulic fluid port B of described Proportional valve is connected with the rod chamber of three described oil cylinders by the second pipeline simultaneously;
Described the first Pilot operated check valve is serially connected on described the first pipeline, during rod chamber fuel feeding that to be connected with at described the second pipeline on described the first Pilot operated check valve be three described oil cylinders, to described the first Pilot operated check valve, provide and control oil, so that the oil circuit control of described the first Pilot operated check valve reverse-conducting, described the first Pilot operated check valve makes hydraulic oil from Proportional valve to described shunt one-way conduction when without control oil;
Described the second Pilot operated check valve is serially connected on described the second pipeline, during rodless cavity fuel feeding that to be connected with at described hydraulic synchronous motor on described the second Pilot operated check valve be three described oil cylinders, to described the second Pilot operated check valve, provide and control oil, so that the oil circuit control of described the second Pilot operated check valve reverse-conducting, described the second Pilot operated check valve makes hydraulic oil from Proportional valve to described rod chamber one-way conduction when without control oil.
As preferably, described the first Pilot operated check valve and the second Pilot operated check valve share oil circuit control, on described oil circuit control, are provided with selector valve; Described oil circuit control comprises oil return oil circuit control and oil-feed oil circuit control; The hydraulic fluid port P of described selector valve is connected with high-pressure and hydraulic oil sources, the hydraulic fluid port T of described selector valve and hydraulic station drain mast, the hydraulic fluid port A of described selector valve is connected with the drain tap Y of described the first Pilot operated check valve and the second Pilot operated check valve by described oil return oil circuit control simultaneously, and the hydraulic fluid port B of described selector valve is connected with the control port X of described the first Pilot operated check valve and the second Pilot operated check valve by described oil-feed oil circuit control simultaneously.
As preferably, on every described shunt oil pipe, be parallel with respectively overflow passage, on every described overflow passage, be respectively arranged with pressure-limiting safety valve;
On described overflow passage, be also provided with repairing one-way valve, the cut-off end of described repairing one-way valve is connected with described shunt oil pipe;
Overflow passage between described repairing one-way valve and described pressure-limiting safety valve is also connected with for making hydraulic oil in overflow passage be back to the return line of hydraulic station or fuel tank.
As preferably, on described shunt oil pipe, be provided with the pressure measuring tie-in for detection of oil pressure.
As preferably, described Proportional valve is 3-position 4-way electro-hydraulic proportional valve, and described selector valve is two-position four-way solenoid valve.
As preferably, described the second pipeline is connected by the second hydraulic hose with the rod chamber of described oil cylinder, and described the second pipeline is provided with the second high-pressure ball valve near described the second hydraulic hose place; Described shunt oil pipe is connected by the first hydraulic hose with the rodless cavity of described oil cylinder, and described shunt oil pipe is provided with the first high-pressure ball valve near described the first hydraulic hose place.
Compared with prior art, the beneficial effect of the hydraulic control system for distributor chute inclination angle positioning precision of the present utility model is:
1, the hydraulic control system for distributor chute inclination angle positioning precision of the present utility model is by adopting the hydraulic oil of hydraulic synchronous motor output same traffic, so that three oil cylinder equivalent fuel feeding, thereby guarantee the synchronous of three oil cylinders, three oil cylinder isolation mutually again simultaneously, make the backing ring that driven by three oil cylinders can run-off the straight, and then avoid the wearing and tearing between guide wheel and guide rail, improve the working life of distributor.
2, due to the hydraulic control system for distributor chute inclination angle positioning precision of the present utility model, can control the precision at distributor chute inclination angle, thereby can make the annular cloth curve of distributor chute is real circle, rather than oval or other shapes, cloth charge level is more even, reduced male and fomale(M&F), be conducive to blast furnace operating personnel raising and control precision.
Accompanying drawing explanation
Fig. 1 is without the partial cutaway structural representation of bell furnace top distributing gear in prior art.
Fig. 2 is the embodiment's one of the hydraulic control system for distributor chute inclination angle positioning precision of the present utility model structural representation.
Fig. 3 is the embodiment's one of the hydraulic control system for distributor chute inclination angle positioning precision of the present utility model structural representation.
Description of reference numerals
1-hydraulic synchronous motor 2-Proportional valve
3-first Pilot operated check valve 4-the second Pilot operated check valve
5-the first pipeline 6-shunt
7-rodless cavity 8-the second pipeline
9-rod chamber 10-selector valve
11-oil-feed oil circuit control 12-oil return oil circuit control
13-is oil pipe 14-overflow passage along separate routes
15-pressure-limiting safety valve 16-return line
17-repairing one-way valve 18-pressure measuring tie-in
19-piston rod 20-the first hydraulic hose
21-first high-pressure ball valve 22-the second hydraulic hose
23-the second high-pressure ball valve
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.
Hydraulic control system for distributor chute inclination angle positioning precision of the present utility model, it comprises hydraulic synchronous motor, hydraulic synchronous motor comprises the shunt with three discharge capacities such as coaxial, three shunts are connected with the rod chamber of three oil cylinders respectively or three described shunts are connected with the rodless cavity of three oil cylinders respectively, thereby make three described oil cylinder equivalent fuel feeding to realize the synchronous of three oil cylinders.
Mode with specific embodiment describes in detail to its structure below:
Embodiment one
As shown in Figure 2, the hydraulic control system for distributor chute inclination angle positioning precision of the present utility model, comprises hydraulic synchronous motor 1, Proportional valve 2, the first Pilot operated check valve 3 and the second Pilot operated check valve 4.Proportional valve 2 in the present embodiment adopts 3-position 4-way electro-hydraulic proportional valve, can adopt the Proportional valve of other types, as long as can realize identical function, as servo proportion.Proportional valve 2 has stepless time adjustment and accurately controls the effect of fuel delivery, can accurately locate distributor chute.The hydraulic fluid port P of Proportional valve 2 is connected with high-pressure and hydraulic oil sources.That the hydraulic fluid port P of the Proportional valve 2 in Fig. 2 connects is hydraulic station P, utilizes high pressure oil pump that the low pressure oil in hydraulic station fuel tank is converted into high pressure oil.The hydraulic fluid port T of Proportional valve 2 is connected with hydraulic station return tube, and that the hydraulic fluid port T of the Proportional valve 2 in the present embodiment connects is hydraulic station T.The hydraulic fluid port A of Proportional valve 2 is connected with one end of the first pipeline 5, and the other end of the first pipeline 5 is divided into three tunnels, and three tunnels are connected with three shunts 6 of hydraulic synchronous motor 1 respectively.Each shunt 6 of hydraulic synchronous motor 1 connects respectively an oil pipe 13 along separate routes, the shunt oil pipe 13 that shunt 6 connects by self is connected with the rodless cavity 7 of oil cylinder described in one of them, and namely the rodless cavity 7 of three shunts 6 and three described oil cylinders connects one to one.The hydraulic fluid port B of Proportional valve 2 is connected with one end of the second pipeline 8, and the other end of the second pipeline 8 is divided into three tunnels, and three tunnels connect one to one with the rod chamber 9 of three described oil cylinders respectively.
Continuation is in conjunction with Fig. 2, and the first Pilot operated check valve 3 is serially connected on the first pipeline 5, on the first Pilot operated check valve 3, is connected with oil circuit control.At the second pipeline 8, during to rod chamber 9 fuel feeding of three described oil cylinders, oil circuit control, to the control port X fuel feeding of the first Pilot operated check valve 3, makes the first Pilot operated check valve 3 reverse-conductings.The first Pilot operated check valve 3 makes hydraulic oil from Proportional valve 2 to shunt 6 one-way conductions when without control oil.The second Pilot operated check valve 4 is serially connected on the second pipeline 8, on the second Pilot operated check valve 4, is also connected with oil circuit control.At hydraulic synchronous motor 1 during to rodless cavity 7 fuel feeding of three described oil cylinders, oil circuit control is to the control port X fuel feeding of the second Pilot operated check valve 4, make the second Pilot operated check valve 4 reverse-conductings, the second Pilot operated check valve 4 makes hydraulic oil from Proportional valve 2 to rod chamber 9 one-way conductions when without control oil.
In the present embodiment, the first Pilot operated check valve 3 and the second Pilot operated check valve 4 share oil circuit control, are provided with selector valve 10 on oil circuit control, and the selector valve 10 in the present embodiment is two-position four-way solenoid valve, can certainly adopt the selector valve of other types.Oil circuit control comprises oil-feed oil circuit control 11 and oil return oil circuit control 12.Particularly, as shown in Figure 2, the hydraulic fluid port P of selector valve 10 and high-pressure and hydraulic oil sources (the high-pressure and hydraulic oil sources of this high-pressure and hydraulic oil sources and Proportional valve 2 shares one, i.e. hydraulic station P) connect.The hydraulic fluid port T of selector valve 10 is connected with hydraulic station drain mast, is connected to hydraulic station T in the present embodiment.The hydraulic fluid port A of selector valve 10 is connected with the drain tap Y of the second Pilot operated check valve 4 with the first Pilot operated check valve 3 by oil return oil circuit control 12 simultaneously, and the hydraulic fluid port B of selector valve 10 is connected with the control port X of the second Pilot operated check valve 4 with the first Pilot operated check valve 3 by oil-feed oil circuit control 11 simultaneously.
When three cylinder movements, if a certain cylinder movement puts in place or be stuck, certainly lead to " building the pressure " or " inhaling empty " of hydraulic synchronous motor 1.In order to prevent the generation of this phenomenon, as a kind of preferred version of the present embodiment, continue in conjunction with Fig. 2, every is parallel with respectively overflow passage 14 on oil pipe 13 along separate routes, on every overflow passage 14, is respectively arranged with pressure-limiting safety valve 15.Overflow passage 14 between repairing one-way valve 17 and pressure-limiting safety valve 15 is connected with for making hydraulic oil in overflow passage 14 be back to the return line 16 of hydraulic station or fuel tank.Pressure-limiting safety valve 15 carries out overload protection (pressure-limiting safety valve 15 pressure settings are than the large 15bar of normal oil cylinder working pressure left and right) by the force value by having set up, and pressure-limiting safety valve 15 can make all the other oil cylinders operations put in place simultaneously.Continuation, in conjunction with Fig. 2, is also provided with repairing one-way valve 17 on overflow passage 14, the cut-off end of repairing one-way valve 17 is connected with shunt oil pipe 13, and the conduction terminal of repairing one-way valve 17 is connected with pressure-limiting safety valve 15.When there is " inhaling empty " of hydraulic synchronous motor 1, repairing one-way valve 17 can be opened, and prevents from inhaling the empty cavitation erosion harm producing.
As further improvement, on oil pipe 13, be provided with the pressure measuring tie-in 18 for detection of oil pressure along separate routes.Shown in Fig. 2, can, as the Placement that the present embodiment adopted, pressure measuring tie-in 18 be arranged on to the joint of shunt oil pipe 13 and overflow passage 14.
Continuation is in conjunction with Fig. 2, and the second pipeline 8 is connected by the second hydraulic hose 22 with the rod chamber 9 of described oil cylinder, and the second pipeline 8 is provided with the second high-pressure ball valve 23 near the second hydraulic hose 22 places; Oil pipe 13 is connected by the first hydraulic hose 20 with the rodless cavity 7 of oil cylinder along separate routes, and oil pipe 13 is provided with the first high-pressure ball valve 21 near the first hydraulic hose 20 places along separate routes.Arranging of the first high-pressure ball valve 21 and the second high-pressure ball valve 23 can be played the effect of cutting off oil circuit when maintenance oil cylinder.In addition, be provided with displacement transducer (not shown) on the oil cylinder in the present embodiment, it plays the effect that whether three oil cylinders are synchronous and protected hydraulic control system when pressure-limiting safety valve 15 lost efficacy that detects.
Hydraulic control system for distributor chute inclination angle positioning precision of the present utility model when mounted, can be installed to hydraulic synchronous motor 1 on the top cover of distributor, to reduce the impact of fluid decrement on oil cylinder displacement fluctuation in pipeline.
Below in conjunction with Fig. 2, the working procedure of the hydraulic control system for distributor chute inclination angle positioning precision of the present utility model is briefly described:
Distributor chute fascinates downwards by the piston rod of the oil cylinder (19 retraction): Proportional valve 2(3-position 4-way electro-hydraulic proportional valve) left side proportion electro-magnet obtains electricly, and electromagnet produces thrust and promotes spool and move right, the P-B conducting of Proportional valve 2, A-T conducting.The electromagnet of Proportional valve 2 obtains electric time, the electromagnet of selector valve 10 obtains electric, promotion spool moves right, the P-B conducting of selector valve 10, A-T conducting, the pressure oil of the hydraulic fluid port P of selector valve 10 enters the control port X of the first Pilot operated check valve 3 along oil-feed oil circuit control 11 through hydraulic fluid port B, control oil again by the drain tap Y of the first Pilot operated check valve 3 and let out back hydraulic station L through the hydraulic fluid port A-T of selector valve 10, the first Pilot operated check valve 3 reverse-conductings.The high pressure liquid force feed of hydraulic station P enters the rod chamber 9 of three oil cylinders through the hydraulic fluid port P-B of Proportional valve 2 simultaneously through the second Pilot operated check valve 4 along the second pipeline 8, be 9 while of rod chamber fuel feeding, and piston rod 19 is retracted.Hydraulic oil in the rodless cavity 7 of oil cylinder enters the first pipeline 5 along shunt oil pipe 13 separately through the shunt 6 of hydraulic synchronous motor 1 respectively, then after the first Pilot operated check valve 3, then gets back to hydraulic station T through the hydraulic fluid port A-T of Proportional valve 2.
Distributor chute upwards fascinates (piston rod 19 of oil cylinder stretches out): Proportional valve 2(3-position 4-way electro-hydraulic proportional valve) right side proportion electro-magnet obtains electricly, and electromagnet produces thrust and promotes spool and be moved to the left, the P-A conducting of Proportional valve 2, B-T conducting.The electromagnet of Proportional valve 2 obtains electric time, the electromagnet of selector valve 10 obtains electric, promotion spool moves right, the P-B conducting of selector valve 10, A-T conducting, the pressure oil of the hydraulic fluid port P of selector valve 10 enters the control port X of the second Pilot operated check valve 4 along oil-feed oil circuit control 11 through hydraulic fluid port B, control oil again by the drain tap Y of the second Pilot operated check valve 4 and let out back hydraulic station L through the hydraulic fluid port A-T of selector valve 10, the second Pilot operated check valve 4 reverse-conductings.The high pressure liquid force feed of hydraulic station P enters three coaxial shunts 6 of hydraulic synchronous motor 1 through the hydraulic fluid port P-A of Proportional valve 2 through the first Pilot operated check valve 3 along the first pipeline 5, and then respectively along three along separate routes oil pipes 13 enter three rodless cavities 7 of oil cylinder, for 7 while of rodless cavity fuel feeding, piston rod 19 stretches out.Hydraulic oil in the rod chamber 9 of oil cylinder enters the second pipeline 8, then after the second Pilot operated check valve 4, then gets back to hydraulic station T through the hydraulic fluid port B-T of Proportional valve 2.
Known by above description, the utility model, by hydraulic synchronous motor 1 is set, utilizes the effect of three coaxial shunts 6 of hydraulic synchronous motor 1, distributes equivalent fluid to each oil cylinder, and coaxial shunt 6 can also play the effect of three oil cylinders of isolation simultaneously.Thereby guarantee the synchronous of three oil cylinders, make the backing ring that driven by three oil cylinders can run-off the straight, avoid the wearing and tearing between guide wheel and guide rail, improve the working life of distributor.
Embodiment two
As shown in Figure 3, the present embodiment and embodiment's one difference is, three along separate routes oil pipes 13 be connected with three rod chambers 9 of oil cylinder respectively, and the second pipeline 8 San road branches are connected with the rodless cavity 7 of three oil cylinders respectively.The structure of other parts and working principle are identical with embodiment one, do not repeat them here.
Above embodiment is only exemplary embodiment of the present utility model, is not used in restriction the utility model, and protection domain of the present utility model is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the utility model in essence of the present utility model and protection domain, this modification or be equal to replacement and also should be considered as dropping in protection domain of the present utility model.
Claims (7)
1. for the hydraulic control system of distributor chute inclination angle positioning precision, its with for driving three oil cylinders that distributor chute fascinates to be connected, it is characterized in that, described hydraulic control system comprises the hydraulic synchronous motor of the shunt with three discharge capacities such as coaxial, and three described shunts are connected with the rod chamber of three oil cylinders by oil pipe along separate routes respectively or three described shunts pass through respectively shunt oil pipe and are connected with the rodless cavity of three oil cylinders so that three described oil cylinder equivalent fuel feeding.
2. the hydraulic control system for distributor chute inclination angle positioning precision according to claim 1, is characterized in that, described hydraulic control system also comprises Proportional valve, the first Pilot operated check valve and the second Pilot operated check valve;
The hydraulic fluid port P of described Proportional valve is connected with high-pressure and hydraulic oil sources, the hydraulic fluid port T of described Proportional valve is connected with hydraulic station return tube, the hydraulic fluid port A of described Proportional valve is connected with three shunts of described hydraulic synchronous motor by the first pipeline simultaneously, three shunts of described hydraulic synchronous motor are connected with the rodless cavity of three described oil cylinders respectively, and the hydraulic fluid port B of described Proportional valve is connected with the rod chamber of three described oil cylinders by the second pipeline simultaneously;
Described the first Pilot operated check valve is serially connected on described the first pipeline, during rod chamber fuel feeding that to be connected with at described the second pipeline on described the first Pilot operated check valve be three described oil cylinders, to described the first Pilot operated check valve, provide and control oil, so that the oil circuit control of described the first Pilot operated check valve reverse-conducting, described the first Pilot operated check valve makes hydraulic oil from Proportional valve to described shunt one-way conduction when without control oil;
Described the second Pilot operated check valve is serially connected on described the second pipeline, during rodless cavity fuel feeding that to be connected with at described hydraulic synchronous motor on described the second Pilot operated check valve be three described oil cylinders, to described the second Pilot operated check valve, provide and control oil, so that the oil circuit control of described the second Pilot operated check valve reverse-conducting, described the second Pilot operated check valve makes hydraulic oil from Proportional valve to described rod chamber one-way conduction when without control oil.
3. the hydraulic control system for distributor chute inclination angle positioning precision according to claim 2, is characterized in that, described the first Pilot operated check valve and the second Pilot operated check valve share oil circuit control, on described oil circuit control, are provided with selector valve; Described oil circuit control comprises oil return oil circuit control and oil-feed oil circuit control; The hydraulic fluid port P of described selector valve is connected with high-pressure and hydraulic oil sources, the hydraulic fluid port T of described selector valve and hydraulic station drain mast, the hydraulic fluid port A of described selector valve is connected with the drain tap Y of described the first Pilot operated check valve and the second Pilot operated check valve by described oil return oil circuit control simultaneously, and the hydraulic fluid port B of described selector valve is connected with the control port X of described the first Pilot operated check valve and the second Pilot operated check valve by described oil-feed oil circuit control simultaneously.
4. according to the hydraulic control system for distributor chute inclination angle positioning precision described in claim 2 or 3, it is characterized in that, on every described shunt oil pipe, be parallel with respectively overflow passage, on every described overflow passage, be respectively arranged with pressure-limiting safety valve;
On described overflow passage, be also provided with repairing one-way valve, the cut-off end of described repairing one-way valve is connected with described shunt oil pipe;
Overflow passage between described repairing one-way valve and described pressure-limiting safety valve is also connected with for making hydraulic oil in overflow passage be back to the return line of hydraulic station or fuel tank.
5. the hydraulic control system for distributor chute inclination angle positioning precision according to claim 4, is characterized in that, on described shunt oil pipe, is provided with the pressure measuring tie-in for detection of oil pressure.
6. the hydraulic control system for distributor chute inclination angle positioning precision according to claim 3, is characterized in that, described Proportional valve is 3-position 4-way electro-hydraulic proportional valve, and described selector valve is two-position four-way solenoid valve.
7. the hydraulic control system for distributor chute inclination angle positioning precision according to claim 2, it is characterized in that, described the second pipeline is connected by the second hydraulic hose with the rod chamber of described oil cylinder, and described the second pipeline is provided with the second high-pressure ball valve near described the second hydraulic hose place; Described shunt oil pipe is connected by the first hydraulic hose with the rodless cavity of described oil cylinder, and described shunt oil pipe is provided with the first high-pressure ball valve near described the first hydraulic hose place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420140599.4U CN203756627U (en) | 2014-03-26 | 2014-03-26 | Hydraulic control system for fabric chute inclined angle location accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420140599.4U CN203756627U (en) | 2014-03-26 | 2014-03-26 | Hydraulic control system for fabric chute inclined angle location accuracy |
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| Publication Number | Publication Date |
|---|---|
| CN203756627U true CN203756627U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420140599.4U Expired - Lifetime CN203756627U (en) | 2014-03-26 | 2014-03-26 | Hydraulic control system for fabric chute inclined angle location accuracy |
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| CN (1) | CN203756627U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864705A (en) * | 2015-05-21 | 2015-08-26 | 南京梅山冶金发展有限公司 | Annular shaft kiln charging bell system control method |
| CN108796158A (en) * | 2018-09-13 | 2018-11-13 | 中冶东方工程技术有限公司 | Distributing device with interlocking hydraulic control system |
-
2014
- 2014-03-26 CN CN201420140599.4U patent/CN203756627U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864705A (en) * | 2015-05-21 | 2015-08-26 | 南京梅山冶金发展有限公司 | Annular shaft kiln charging bell system control method |
| CN108796158A (en) * | 2018-09-13 | 2018-11-13 | 中冶东方工程技术有限公司 | Distributing device with interlocking hydraulic control system |
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Inventor after: Chen Xiaoguang Inventor after: Li Dongsheng Inventor after: Li Kai Inventor after: Liu Bo Inventor after: Zhang Fuming Inventor after: Ao Aiguo Inventor after: Xu Tao Inventor after: Shen Hengyuan Inventor after: Wang Qiang Inventor after: Hua Cheng Inventor after: Zhou Yongli Inventor before: Chen Xiaoguang Inventor before: Wang Qiang Inventor before: Hua Cheng Inventor before: Zhou Yongli Inventor before: Li Dongsheng Inventor before: Li Kai |
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Granted publication date: 20140806 |
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