CN103452937B - A kind of multiway hydraulic control valve - Google Patents
A kind of multiway hydraulic control valve Download PDFInfo
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- CN103452937B CN103452937B CN201310414026.6A CN201310414026A CN103452937B CN 103452937 B CN103452937 B CN 103452937B CN 201310414026 A CN201310414026 A CN 201310414026A CN 103452937 B CN103452937 B CN 103452937B
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Abstract
The invention discloses a kind of multiway hydraulic control valve, comprise valve body, selector valve group and conversion valve set is provided with in described valve body, selector valve group is connected oil duct by the first connection oil duct and second and is connected with conversion valve set, changeover valve core action in selector valve group makes the first connection oil duct and second connect oil duct switching connection between filler opening and respective unloading port respectively, conversion valve set is provided with many group oil cylinders connection mouth, and is provided with for switching the conversion spool being connected oil duct and second with first and connecting the oil cylinder connection mouth that oil duct is communicated with.Multiway hydraulic control valve of the present invention adopts mechanical mechanism to achieve control to hydraulic circuit completely, its structure is simple, cost is low, there is machinery valve stable performance, advantage easy to maintenance simultaneously, multiway hydraulic control valve of the present invention is used for oil cylinder piston course changing control and oil cylinder switching controls in multipath hydraulic power system, be conducive to realizing Automated condtrol, be with a wide range of applications.
Description
Technical field
The present invention relates to a kind of control valve, particularly a kind of multiway hydraulic control valve.
Background technique
In the modern times, aborning, some manufacturing mechanisms achieve full-automation or semi-automatic operation, save labour force, enhance productivity in industrial automation extensive use.In existing automation equipment, generally adopt numerical control or relay to realize automatically controlling, wherein, numerically controlled automatic equipment has easy to operate, stable performance, advantage that efficiency is high, but the cost of existing numerical control device generally exceeds tens times than conventional equipment, have that cost is high, the shortcoming of Maintenance Difficulty; And adopting relay to realize the equipment of automation, its cost is lower, efficiency is high, is easy to carry out changing and safeguarding simultaneously, but easily breaks down due to relay, and make the unstable properties of this equipment, safety coefficient is also lower.
Hydraulic power system is widely used in industry and building field, and existing hydraulic power system controls by the valve of digital controlled valve or Control, but there is above-mentioned corresponding shortcoming.How providing that a kind of cost is low, the autocontrol valve of stable performance, is present people's urgent problem.
Summary of the invention
In order to solve the problems of the technologies described above, the object of this invention is to provide a kind of multiway hydraulic control valve, employing mechanical mechanism achieves the control to valve, low cost of manufacture, stable performance.
The technical solution adopted in the present invention is:
A kind of multiway hydraulic control valve, comprises valve body, is provided with selector valve group and conversion valve set in described valve body, wherein:
Described selector valve group is provided with the filler opening connecting oil pump respectively and the unloading port being connected fuel tank, selector valve group connects oil duct by first and is connected oil duct connection conversion valve set with second, first connects oil duct is communicated with filler opening/unloading port, second connects oil duct correspondence is communicated with unloading port/filler opening, be movably set with changeover valve core in described selector valve group, changeover valve core action makes the first connection oil duct and second connect oil duct switching connection between respective filler opening and unloading port respectively;
Described conversion valve set is connected oil duct by the first connection oil duct with second and is connected with selector valve group, conversion valve set is provided with the oil cylinder connection mouth of at least two groups for connecting fluid compressing cylinder, every group oil cylinder connection mouth comprises can be connected connection mouth A that oil duct is communicated with and the connection mouth B that can be connected oil duct with second and be communicated with first; Conversion valve set comprises at least one changing valve, changing valve is movably set with conversion spool, and the oil cylinder connection mouth that described conversion spool action switches different group is connected oil duct and second and connects oil duct and be communicated with first.
As the further improvement of technique scheme, described selector valve group comprises reversing groove, surge valve pool, described filler opening is arranged on reversing groove, reversing groove is provided with oil-feed oil duct and connects the valve pool that surges, reversing groove is also provided with two oil ducts that surge and connects valve pool two ends of surging respectively, described changeover valve core is movably arranged in reversing groove, changeover valve core is provided with oil guide slot, filler opening connects oil-feed oil duct by oil guide slot, and changeover valve core action makes filler opening connect two switchings between oil duct of surging; The described valve pool that surges is provided with the first connection oil duct, second and connects oil duct and unloading port, surge in valve pool and be movably set with the spool that surges, the length of the described spool that surges is less than the valve pool that surges, surge on spool and be provided with oil guide slot, spool action of surging makes the first connection oil duct and second connect oil duct to switch between oil-feed oil duct and unloading port respectively and connect.
As the further improvement of technique scheme, described reversing groove is provided with Liang Ge unloading port, described Liang Ge unloading port is corresponding two oil ducts that surge respectively, and described changeover valve core action makes two oil ducts that surge between filler opening and respective unloading port, switch connection respectively.
As the further improvement of technique scheme, more than the changing valve number comprised in conversion valve set one of the oil cylinder connection mouth group number that described conversion valve set is arranged.
As the further improvement of technique scheme, described changing valve comprises conversion groove, described conversion groove comprises two imports and four outlets, corresponding two outlets of each import, conversion spool is movably set with in conversion groove, described conversion spool is provided with oil guide slot, and the action of conversion spool makes two imports between each self-corresponding outlet, switch connection respectively.
As the further improvement of technique scheme, the changing valve that two or more connects successively is provided with in described conversion valve set, two imports of described changing valve connect the outlet of two conductings simultaneously of a changing valve respectively, the outlet of two conductings simultaneously of changing valve connects two imports of next changing valve respectively, and another two go out interruption-forming one group oil cylinder connection mouth.
As the further improvement of technique scheme, two imports of described first changing valve connect the first connection oil duct respectively and are connected oil duct with second.
As the further improvement of technique scheme, unloading valve is provided with in described valve body, described unloading valve comprises off-load valve pool and is movably arranged on the off-load spool in off-load valve pool, off-load spool is provided with oil guide slot, described off-load valve pool is provided with release oil duct and connects the first connection oil duct/the second connection oil duct, off-load valve pool is provided with unloading port, and the action of off-load spool is closed release oil duct or is made release oil duct be communicated with unloading port.When unloading valve is opened, release oil duct connects unloading port, and make the oil in multiway hydraulic control valve directly be back to fuel tank by unloading valve, can not produce oil pressure to hydraulic jack, hydraulic jack does not work; When unloading valve cuts out, off-load spool closes release oil duct, and hydraulic jack normally works.
The invention has the beneficial effects as follows:
Compared with existing digital controlled valve or Control valve, multiway hydraulic control valve of the present invention adopts mechanical mechanism to achieve control to hydraulic circuit completely, its structure is simple, cost is low, has machinery valve stable performance, advantage easy to maintenance simultaneously.
Multiway hydraulic control valve of the present invention also has the advantages such as oil circuit conversion is rapid, steady, reliable, temperature rise is little, sustainable work, the switching controls between oil cylinder piston course changing control and multiple oil cylinder in multipath hydraulic power system can be used for, be convenient to realize that oil-way system is ordered, automation, and then realize industrial automation, be with a wide range of applications.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the perspective view (three group oil cylinder connection mouths) of first embodiment of the invention;
Fig. 2 is the schematic diagram that the internal structure of the first embodiment under unloading valve open mode is launched;
Fig. 3 is the phase diagram (A1 output) of the first group oil cylinder connection mouth work;
Fig. 4 is the phase diagram (B1 output) of the first group oil cylinder connection mouth work;
Fig. 5 is the phase diagram (A2 output) of the second group oil cylinder connection mouth work;
Fig. 6 is the phase diagram (B2 output) of the second group oil cylinder connection mouth work;
Fig. 7 is the phase diagram (A3 output) of the 3rd group oil cylinder connection mouth work;
Fig. 8 is the phase diagram (B3 output) of the 3rd group oil cylinder connection mouth work;
Fig. 9 is the perspective view (two group oil cylinder connection mouths) of second embodiment of the invention;
Figure 10 is the schematic diagram that the internal structure of the second embodiment is launched;
Figure 11 is using state figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment to the further detailed description of multiway hydraulic control valve of the present invention.
With reference to Fig. 1, Fig. 2, one of them preferred embodiment of the present invention, comprises valve body 1, is provided with selector valve group and conversion valve set in valve body 1, and selector valve group and conversion valve set are connected oil duct 11 by first and are connected oil duct 12 with second and are connected.
Described selector valve group comprises reversing groove 13, surge valve pool 15, reversing groove 13 is connected by oil-feed oil duct 17, left side oil duct 18 and the right side oil duct 19 that surges that surges the valve pool 15 that surges, and wherein left surge oil duct 18 and the right oil duct 19 that surges are connected the two ends, left and right of the valve pool 15 that surges respectively; Reversing groove 13 is provided with oil inlet P, the valve pool 15 that surges is provided with the first connection oil duct 11, second and connects oil duct 12 and Liang Ge unloading port O, Liang Ge unloading port O and corresponding first connect oil duct 11 and be connected oil duct 12 with second respectively.Changeover valve core 14 is movably set with in described reversing groove 13, changeover valve core 14 stretches out at valve body 1 outer for controlling its action, changeover valve core 14 is provided with oil guide slot, oil inlet P connects oil-feed oil duct 17 by the oil guide slot of changeover valve core 14, and changeover valve core 14 action makes oil inlet P also connect two switchings between oil duct 18,19 of surging.Surge in valve pool 15 and be movably set with the spool 16 that surges, surge on spool 16 and be provided with oil guide slot, described length of surging spool 16 is less than the valve pool 15 that surges, according to the position of changeover valve core 14, liquid medium (be preferably oil) oil duct 18/ right side oil duct 19 that surges that surges from a left side enters into the left/right end of the valve pool 15 that surges, and promote surge spool 16 to the right/move left, make the first connection oil duct 11 and second connect oil duct 12 switching connection between oil-feed oil duct 17 and respective unloading port O respectively, realize the oil circuit commutation of oil cylinder part.
Further, reversing groove 13 is provided with three unloading port O.Wherein Liang Ge unloading port O corresponding two oil ducts 18,19 that surge respectively, changeover valve core 14 action makes two oil ducts 18,19 that surge switch between oil inlet P and respective unloading port O respectively to connect, for shedding the medium of valve pool 15 end of surging when changeover valve core 14 switching state; Another unloading port O is arranged on the inner terminal of reversing groove 13, for shedding the medium in reversing groove 13.Certainly, the unloading port O on reversing groove 13 can also be set to one or more, by arranging through hole in valve body 1, multiple chamber carrying out emptying that needs is coupled together, and shares a unloading port O.
Described conversion valve set is made up of more than one changing valve, and described changing valve forms by changing groove and being movably arranged on the conversion spool changed in groove, and conversion groove is provided with two imports and four outlets, corresponding two outlets of each import; Conversion spool is provided with oil guide slot, and the action of conversion spool makes two imports between each self-corresponding outlet, switch connection respectively.Conversion valve set in the present embodiment is connected to form successively by the first changing valve and the second changing valve, wherein, two imports of the first conversion groove 21 are connected oil duct 11 and second respectively and connect oil duct 12 and connect with first, the outlet of two conductings simultaneously of the first conversion groove 21 connects two imports of the second conversion groove 23 respectively, another two going out interruption-forming for connecting a group oil cylinder connection mouth of oil cylinder, comprising connection mouth A1 and connection mouth B1; Second conversion two of groove 23 conductings simultaneously go out interruption-forming second group oil cylinder connection mouth A2, B2, another two of the second conversion groove 23 go out interruption-forming the 3rd group oil cylinder connection mouth A3, B3.The first conversion spool 22 is movably set with in first conversion groove 21, the second conversion spool 24 is movably set with in second conversion groove 23, according to the position of the first conversion spool 22 and the second conversion spool 24, make above-mentioned any group oil cylinder connection mouth be connected oil duct 11, second with first and connect oil duct 12 and be communicated with.
In addition, also unloading valve is provided with in valve body 1, the off-load spool 32 that unloading valve comprises off-load valve pool 31 and is movably arranged in off-load valve pool 31, off-load spool 32 is provided with oil guide slot, described off-load valve pool 31 is provided with release oil duct 33 and connects the first connection oil duct 11/ second connection oil duct 12, off-load valve pool 31 is provided with unloading port O.As shown in Figure 2, when unloading valve is opened, when namely off-load spool 32 stretches out and makes release oil duct 33 be communicated with unloading port O, the medium entered from oil inlet P is directly back to fuel tank by the unloading port O unloading valve, can not produce oil pressure to hydraulic jack, the oil cylinder that multiway hydraulic control valve is connected does not work; As shown in Figures 3 to 8, when unloading valve cuts out, when namely off-load spool 32 is pressed into valve body 1 inner sealing release oil duct 33, multiway hydraulic control valve is in running order, and hydraulic jack normally works.
Fig. 3 to Fig. 8 shows the view of an operation cycle of the present embodiment, wherein oil inlet P connects fuel tank by oil pump, and unloading port O connects fuel tank respectively, and connection mouth A1, B1 connect No. 1 oil cylinder, connection mouth A2, B2 connect No. 2 oil cylinders, and connection mouth A3, B3 connect No. 3 oil cylinders.
As shown in Figure 3, changeover valve core 14 is pressed into, and medium enters from oil inlet P and the oil duct 18 that surged by a left side enters into valve pool 15 left end that surges, and promotes the spool 16 that surges and shifts to low order end, make the first connection oil duct 11 connect oil-feed oil duct 17, second connection oil duct 12 and connect unloading port O; First conversion spool 22 stretches out, and makes the first connection oil duct 11 be communicated with connection mouth A1, and second connects oil duct 12 is communicated with connection mouth B1, and form the circulating oil path of oil inlet P → connection mouth A1 → No. 1 oil cylinder → connection mouth B1 → unloading port O, the piston of No. 1 oil cylinder stretches out.As shown in Figure 4, changeover valve core 14 stretches out, and medium enters from oil inlet P and the oil duct 19 that surged by the right side enters into valve pool 15 right-hand member that surges, and promotes the spool 16 that surges and shifts to high order end, make the first connection oil duct 11 connect unloading port O, second connects oil duct 12 connects oil-feed oil duct 17; First conversion spool 22 keeps extend action constant, and form the oil circuit of oil inlet P → connection mouth B1 → No. 1 oil cylinder → connection mouth A1 → unloading port O, medium oppositely enters No. 1 oil cylinder, and the piston of No. 1 oil cylinder reclaims, and No. 1 oil cylinder completes cycle of activity.
As shown in Figure 5, changeover valve core 14 is pressed into, and makes the first connection oil duct 11 connect oil-feed oil duct 17, second connection oil duct 12 and connects unloading port O; First conversion spool 22 is pressed into, second conversion spool 24 stretches out, and makes the first connection oil duct 11 be communicated with connection mouth A2, and second connects oil duct 12 is communicated with connection mouth B2, form the circulating oil path of oil inlet P → connection mouth A2 → No. 2 oil cylinder → connection mouth B2 → unloading port O, No. 2 oil cylinder pistons stretch out.As shown in Figure 6, changeover valve core 14 stretches out, and makes the first connection oil duct 11 connect unloading port O, and second connects oil duct 12 connects oil-feed oil duct 17; The state of the first conversion spool 22 and the second conversion spool 24 remains unchanged, and form the circulating oil path of oil inlet P → connection mouth B2 → No. 2 oil cylinder → connection mouth A2 → unloading port O, No. 2 oil cylinder pistons reclaim, and No. 2 oil cylinders complete cycle of activity.
As shown in Figure 7, changeover valve core 14 is pressed into, and makes the first connection oil duct 11 connect oil-feed oil duct 17, second connection oil duct 12 and connects unloading port O; First conversion spool 22 is pressed into, second conversion spool 24 is pressed into, and makes the first connection oil duct 11 be communicated with connection mouth A3, and second connects oil duct 12 is communicated with connection mouth B3, form the circulating oil path of oil inlet P → connection mouth A3 → No. 3 oil cylinder → connection mouth B3 → unloading port O, No. 3 oil cylinder pistons stretch out.As shown in Figure 8, changeover valve core 14 stretches out, and makes the first connection oil duct 11 connect unloading port O, and second connects oil duct 12 connects oil-feed oil duct 17; The state of the first conversion spool 22 and the second conversion spool 24 remains unchanged, and form the circulating oil path of oil inlet P → connection mouth B3 → No. 3 oil cylinder → connection mouth A3 → unloading port O, No. 3 oil cylinder pistons reclaim, and No. 3 oil cylinders complete cycle of activity.Then changeover valve core 14 is pressed into, and the first conversion spool 22 and the second conversion spool 24 stretch out, and repeat the step of Fig. 3 to Fig. 8, make 3 oil cylinder periodic duties.
With reference to Fig. 9, Figure 10, the schematic diagram that the perspective view of another embodiment of the present invention and internal structure are launched.From Fig. 9, Figure 10, the commutation valve block structure of the multiway hydraulic control valve in the second embodiment is basically the same as those in the first embodiment, but the conversion valve set in the second embodiment is a changing valve, the quantity be with the difference of the first embodiment; Owing to only having a changing valve in the second embodiment, its conversion valve set preferably arranges two group oil cylinder connection mouths, can switch connection between two oil cylinders.Therefore, multiway hydraulic control valve of the present invention according to the oil cylinder quantity of required control, can arrange the changing valve quantity in conversion valve set flexibly, and wherein, the quantity of changing valve is preferably than few one of the oil cylinder quantity (oil cylinder connection mouth group number) needing to control.
Multiway hydraulic control valve of the present invention is used for the switching controls in multipath hydraulic power system between oil cylinder piston course changing control and multiple oil cylinder, each industrial field can be widely used in, as shown in figure 11, the schematic diagram on reinforcing bar shaper is applied in for multiway hydraulic control valve of the present invention, multiway hydraulic control valve coordinates the open valve on reinforcing bar shaper and forms switch, achieve the automatic control to the multiple oil cylinders on reinforcing bar shaper, make the shaping overall process of this reinforcing bar shaper moment reinforcement realize ordered, automation.Compared with being applied to the automatic valve controlled with existing digital controlled valve or Control valve etc., multiway hydraulic control valve of the present invention adopts mechanical mechanism to achieve control to hydraulic circuit completely, its structure is simple, cost is low, there is machinery valve stable performance, advantage easy to maintenance simultaneously, have wide practical use.
These are only preferred embodiments of the present invention, as long as the technological scheme realizing the object of the invention with basic same approach all belongs within protection scope of the present invention.
Claims (8)
1. a multiway hydraulic control valve, is characterized in that, comprises valve body, is provided with selector valve group and conversion valve set in described valve body, wherein:
Described selector valve group is provided with the filler opening connecting oil pump respectively and the unloading port being connected fuel tank, selector valve group connects oil duct by first and is connected oil duct connection conversion valve set with second, first connects oil duct is communicated with filler opening/unloading port, second connects oil duct correspondence is communicated with unloading port/filler opening, be movably set with changeover valve core in described selector valve group, changeover valve core action makes the first connection oil duct and second connect oil duct switching connection between respective filler opening and unloading port respectively;
Described conversion valve set is connected oil duct by the first connection oil duct with second and is connected with selector valve group, conversion valve set is provided with the oil cylinder connection mouth of at least two groups for connecting fluid compressing cylinder, every group oil cylinder connection mouth comprises can be connected connection mouth A that oil duct is communicated with and the connection mouth B that can be connected oil duct with second and be communicated with first; Conversion valve set comprises at least one changing valve, changing valve is movably set with conversion spool, and the oil cylinder connection mouth that described conversion spool action switches different group is connected oil duct and second and connects oil duct and be communicated with first.
2. a kind of multiway hydraulic control valve according to claim 1, it is characterized in that: described selector valve group comprises reversing groove, surge valve pool, described filler opening is arranged on reversing groove, reversing groove is provided with oil-feed oil duct and connects the valve pool that surges, reversing groove is also provided with two oil ducts that surge and connects valve pool two ends of surging respectively, described changeover valve core is movably arranged in reversing groove, changeover valve core is provided with oil guide slot, filler opening connects oil-feed oil duct by oil guide slot, and changeover valve core action makes filler opening connect two switchings between oil duct of surging; The described valve pool that surges is provided with the first connection oil duct, second and connects oil duct and unloading port, surge in valve pool and be movably set with the spool that surges, the length of the described spool that surges is less than the valve pool that surges, surge on spool and be provided with oil guide slot, spool action of surging makes the first connection oil duct and second connect oil duct to switch between oil-feed oil duct and unloading port respectively and connect.
3. a kind of multiway hydraulic control valve according to claim 2, is characterized in that: described reversing groove is provided with unloading port, and described changeover valve core action makes two oil ducts that surge between filler opening and unloading port, switch connection respectively.
4. a kind of multiway hydraulic control valve according to claim 1, is characterized in that: more than the changing valve number comprised in conversion valve set one of the oil cylinder connection mouth group number that described conversion valve set is arranged.
5. a kind of multiway hydraulic control valve according to claim 1 or 4, it is characterized in that: described changing valve comprises conversion groove, described conversion groove comprises two imports and four outlets, corresponding two outlets of each import, conversion spool is movably set with in conversion groove, described conversion spool is provided with oil guide slot, and the action of conversion spool makes two imports between each self-corresponding outlet, switch connection respectively.
6. a kind of multiway hydraulic control valve according to claim 5, it is characterized in that: in described conversion valve set, be provided with the changing valve that two or more connects successively, two imports of described changing valve connect the outlet of two conductings simultaneously of a changing valve respectively, the outlet of two conductings simultaneously of changing valve connects two imports of next changing valve respectively, and another two go out interruption-forming one group oil cylinder connection mouth.
7. a kind of multiway hydraulic control valve according to claim 6, is characterized in that: two imports of described first changing valve connect the first connection oil duct respectively and are connected oil duct with second.
8. a kind of multiway hydraulic control valve according to claim 1, it is characterized in that: in described valve body, be provided with unloading valve, described unloading valve comprises off-load valve pool and is movably arranged on the off-load spool in off-load valve pool, off-load spool is provided with oil guide slot, described off-load valve pool is provided with release oil duct and connects the first connection oil duct/the second connection oil duct, off-load valve pool is provided with unloading port, and the action of off-load spool is closed release oil duct or is made release oil duct be communicated with unloading port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310414026.6A CN103452937B (en) | 2013-09-11 | 2013-09-11 | A kind of multiway hydraulic control valve |
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| CN201310414026.6A CN103452937B (en) | 2013-09-11 | 2013-09-11 | A kind of multiway hydraulic control valve |
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| CN103452937A CN103452937A (en) | 2013-12-18 |
| CN103452937B true CN103452937B (en) | 2015-10-28 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605015A (en) * | 2016-02-29 | 2016-05-25 | 宁波高新区微动科技有限公司 | Integrated multi-way oil rotary distributor |
| CN107387473B (en) * | 2017-08-16 | 2023-10-10 | 冯广建 | Tandem channel-borrowing type multipath hydraulic control device |
| CN108223844B (en) * | 2018-02-13 | 2024-01-09 | 冯广建 | Multi-station signal opening oil way switch conversion control device with linkage arm |
| CN109203401B (en) * | 2018-09-30 | 2024-03-01 | 广州市型腔模具制造有限公司 | Transfer structure for optimizing densely-arranged hydraulic cylinder connecting oil paths |
| CN113970008B (en) * | 2021-10-16 | 2024-02-27 | 山东锐凯工程机械有限公司 | Automatic control method and system for multi-way valve for hydraulic excavator |
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| CN203516252U (en) * | 2013-09-11 | 2014-04-02 | 冯广建 | Multi-way hydraulic control valve |
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| DE3138411A1 (en) * | 1981-09-26 | 1983-04-14 | Robert Bosch Gmbh, 7000 Stuttgart | Hydraulic directional control valve |
| US5190078A (en) * | 1991-01-16 | 1993-03-02 | Festo Kg | Sealing device for a multiway valve and a method for the production thereof |
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