CN107387473B - Tandem channel-borrowing type multipath hydraulic control device - Google Patents
Tandem channel-borrowing type multipath hydraulic control device Download PDFInfo
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- CN107387473B CN107387473B CN201710701741.6A CN201710701741A CN107387473B CN 107387473 B CN107387473 B CN 107387473B CN 201710701741 A CN201710701741 A CN 201710701741A CN 107387473 B CN107387473 B CN 107387473B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/001—Servomotor systems with fluidic control
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a serial channel-borrowing type multipath hydraulic control device which comprises a first hydraulic control valve and a second hydraulic control valve which are sequentially connected, wherein a liquid inlet, a liquid outlet and an output port are formed in the first hydraulic control valve; the second hydraulic control valve is provided with a liquid inlet, a liquid return port and an output port, and the second hydraulic control valve controls the liquid inlet to be communicated between the liquid return port and the output port in a switching mode. The serial channel-borrowing type multi-channel hydraulic control device is driven by only one hydraulic pump through serial and channel-borrowing functions, each hydraulic control valve can independently control the action of the hydraulic actuating mechanism, and complex action control such as sequential actions can be realized.
Description
Technical Field
The invention relates to the field of hydraulic control, in particular to a serial channel-borrowing type multipath hydraulic control device.
Background
The existing hydraulic power system generally comprises a storage container, a driving pump, a transfusion tube, a control valve arranged on the transfusion tube, an actuating mechanism and the like, such as an oil pressure system which is most commonly used in the existing hydraulic power system and comprises an oil tank, an oil pump, an oil pipe, the control valve and an oil cylinder. The existing oil pressure system is characterized in that an oil pump correspondingly drives an oil cylinder to act, and a control valve is used for controlling the opening and closing and controlling the flow of oil. The existing hydraulic system is simple in action and single in function, and cannot perform complex control operation, so that the existing large-scale mechanical equipment generally adopts a numerical control module to control the action of the equipment. However, the numerical control module has high manufacturing cost, difficult maintenance and severe use conditions, and is easy to damage or error under the severe environment that mechanical equipment frequently acts to generate vibration, thereby influencing production.
Under the above circumstances, the applicant aims to develop a multi-path hydraulic control device which is helpful for controlling the actions of mechanical equipment, so as to replace a numerical control module to control hydraulic mechanical equipment, and reduce the cost.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a serial channel-borrowing type multi-channel hydraulic control device, which is provided with a plurality of hydraulic control valves, and only one hydraulic pump is needed to drive through serial and channel-borrowing functions, so that each hydraulic control valve can independently control the action of a hydraulic executing mechanism and can realize complex action control such as sequential action.
The technical scheme adopted by the invention is as follows:
the serial channel-borrowing type multi-channel hydraulic control device comprises a first hydraulic control valve and a second hydraulic control valve which are sequentially connected, wherein one or more first hydraulic control valves are arranged;
the first hydraulic control valve is provided with a first liquid inlet, a first liquid outlet and a first output port, the first liquid inlet is connected with a liquid outlet of the hydraulic pump or the upper-stage control valve, the first output port is connected with the hydraulic actuating mechanism, and the first hydraulic control valve controls the first liquid inlet to switch and communicate between the first liquid outlet and the first output port;
the second hydraulic control valve is provided with a second liquid inlet, a second liquid return port and a second output port, the second liquid inlet is connected with the liquid outlet of the upper-stage control valve, the second liquid return port is directly connected with the oil tank, the second output port is connected with the hydraulic actuating mechanism, and the second hydraulic control valve controls the second liquid inlet to switch and communicate between the second liquid return port and the second output port.
As a further improvement of the technical scheme, a liquid supply passage valve groove and a first reversing valve groove are arranged in the first hydraulic control valve, and a liquid supply valve groove and a second reversing valve groove are arranged in the second hydraulic control valve.
As a further improvement of the technical scheme, the first liquid inlet and the first liquid outlet are formed in the liquid supply passage valve groove, the first output port is formed in the first reversing valve groove, a first communication channel is formed between the liquid supply passage valve groove and the first reversing valve groove, a first liquid supply valve core is movably arranged in the liquid supply passage valve groove, a guide groove is formed in the first liquid supply valve core, and the first liquid supply valve core acts to enable the first liquid inlet to be switched and connected between the first liquid outlet and the first communication channel.
As a further improvement of the technical scheme, the liquid supply valve groove is provided with a second liquid inlet and a second liquid return port, the second reversing valve groove is provided with a second output port, a second communication channel is arranged between the liquid supply valve groove and the second reversing valve groove, a second liquid supply valve core is movably arranged in the liquid supply valve groove, the second liquid supply valve core is provided with a guide groove, and the second liquid supply valve core acts to enable the second liquid inlet to be switched and connected between the second liquid return port and the second communication channel.
As a further improvement of the technical proposal, a first output port A and a first output port B are arranged on the first reversing valve groove, a first reversing valve core is movably arranged in the first reversing valve groove, the first reversing valve core is provided with a guide groove, and the first reversing valve core acts to enable the first communication channel to be switched and connected between the first output port A and the first output port B;
the second reversing valve groove is provided with a second output port A and a second output port B, a second reversing valve core is movably arranged in the second reversing valve groove, the second reversing valve core is provided with a guide groove, and the second reversing valve core acts to enable the second communication channel to be switched and connected between the second output port A and the second output port B.
As a further improvement of the technical scheme, the second reversing valve groove is provided with a liquid return port, when the output port A is connected with the communication channel, the output port B is connected with the liquid return port, and when the output port B is connected with the communication channel, the output port A is connected with the liquid return port.
As a further improvement of the technical scheme, liquid discharge ports for discharging redundant liquid in the valve grooves are respectively arranged on the liquid supply borrowing valve groove, the first reversing valve groove, the liquid supply valve groove and the second reversing valve groove.
As a further improvement of the technical scheme, the first hydraulic control valve comprises a first valve body, the liquid supply passage valve groove and the first reversing valve groove are arranged on the first valve body, and the first valve body is provided with a detachable valve cover corresponding to the liquid supply passage valve groove and the first reversing valve groove respectively.
As a further improvement of the technical scheme, the second hydraulic control valve comprises a second valve body, the liquid supply valve groove and the second reversing valve groove are arranged on the second valve body, and the second valve body is provided with a detachable valve cover corresponding to the liquid supply valve groove and the second reversing valve groove respectively.
The beneficial effects of the invention are as follows:
the serial channel-borrowing type multi-path hydraulic control device comprises a plurality of hydraulic control valves which are connected in sequence, only one hydraulic pump is needed to drive through serial and channel-borrowing functions, each hydraulic control valve can independently control the action of a hydraulic executing mechanism, complex action control such as sequential action can be realized, and the numerical control module can be replaced to control hydraulic mechanical equipment. The design is completely composed of a mechanical structure, and has the advantages of low manufacturing cost, convenient maintenance, easy operation, good stability, adaptability to various severe environments and long service life.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic illustration of an embodiment of a tandem lane-type multi-way hydraulic control apparatus according to the present invention.
Fig. 2 is a schematic structural view of the first hydraulic control valve.
Fig. 3 is a schematic structural view of the second hydraulic control valve.
Fig. 4 is a schematic diagram of the oil path of the serial-passage multi-path hydraulic control device in a standby state.
Fig. 5 to 10 are schematic diagrams of the oil passages in the respective operation states of the above-described embodiments.
Detailed Description
The serial lane-type multi-path hydraulic control apparatus of the present invention will be described in further detail with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1, fig. 1 provides a preferred embodiment of a serial channel-borrowed multi-path hydraulic control device, which adopts hydraulic oil as driving, and comprises two first hydraulic control valves 2 and one second hydraulic control valve 3, wherein the first hydraulic control valves 2 and the second hydraulic control valves 3 are sequentially connected, the leftmost first hydraulic control valve 2 is connected with an oil pump 1, and the first hydraulic control valve 2 and the second hydraulic control valve 3 are respectively connected with an oil cylinder 4.
Referring to fig. 2, fig. 2 shows a preferred structure of the first hydraulic control valve 2. The first hydraulic control valve 2 is provided with a first liquid inlet P, a first liquid outlet Q, a first output port and a liquid return port O. The first liquid inlet P is connected with the liquid outlet Q of the oil pump 1 or the upper control valve. The two output ports comprise a first output port A and a first output port B which are respectively connected with two ends of the oil cylinder 4, a piston which can drive the oil cylinder 4 is output from the first output port A to extend forwards, and a piston which can drive the oil cylinder 4 is output from the first output port B to retract. The liquid return port O is directly connected with the oil tank. The first hydraulic control valve 2 is provided with a liquid supply passage valve spool 23 and a first reversing valve spool 25 in this order. The first liquid feeding valve core 22 is movably arranged in the liquid feeding valve spool 23, the first liquid inlet P and the first liquid outlet Q are arranged on the liquid feeding valve spool 23, a first communication channel 24 is arranged between the liquid feeding valve spool 23 and the first reversing valve spool 25, a guide groove is arranged on the first liquid feeding valve core 22, and the first liquid inlet P is switched and connected between the first liquid outlet Q and the first communication channel 24 by the action of the first liquid feeding valve core 22. The first reversing valve groove 25 is movably provided with a first reversing valve core 21, a first output port A, a first output port B and a liquid return port O are arranged on the first reversing valve groove 25, the liquid return ports O are respectively provided with two corresponding first output ports A and B, the first reversing valve core 21 is provided with a guide groove, the first reversing valve core 21 acts to enable the first communication channel 24 to be switched between the first output port A and the first output port B, when the first communication channel 24 is connected with the first output port A, the first output port B is connected with the liquid return port O to form a liquid supply loop, and similarly, when the first communication channel 24 is connected with the first output port B, the first output port A is connected with the liquid return port O.
In addition, the liquid supply passage valve groove 23 and the first reversing valve groove 25 are respectively provided with a liquid outlet R for discharging the excessive liquid in the valve groove.
Referring to fig. 3, fig. 3 shows a preferred structure of the second hydraulic control valve 3. For ease of production, the second hydraulic control valve 3 has a number of common structures with the first hydraulic control valve 2. As shown in fig. 3, the second hydraulic control valve 3 is provided with a second liquid inlet P, a second liquid return O and a second output, and the second hydraulic control valve 3 is internally provided with a liquid supply valve spool 33 and a second reversing valve spool 35 in sequence. The second liquid feeding valve core 32 is movably disposed in the liquid feeding valve groove 33, the second liquid inlet P and the second liquid return port O are disposed on the liquid feeding valve groove 33, a second communication channel 34 is disposed between the liquid feeding valve groove 33 and the second reversing valve groove 35, and the second liquid feeding valve core 32 acts to switch the second liquid inlet P between the second liquid return port O and the second communication channel 34. The second reversing valve spool 35 has the same structure as the first hydraulic control valve 2, and a second reversing valve core 31, a second output port a, a second output port B, and two return ports O are also disposed in the second reversing valve spool 35. Further, a drain port R is also provided in the liquid supply valve spool 33 and the second reversing valve spool 35. As is clear from the above-described structure, the second hydraulic control valve 3 is different from the first hydraulic control valve 2 in that the second hydraulic control valve 3 is not provided with the liquid outlet Q connected to the lower control valve, and the liquid supply valve spool 33 is not opened, and as shown in fig. 4, when the liquid supply valve spool 33 operates to communicate the second liquid inlet P and the second liquid return port O, hydraulic oil directly flows back to the tank through the second liquid return port O, and the second hydraulic control valve 3 is in a closed state, and the cylinder does not operate. Further, the other structures of the second hydraulic control valve 3 are the same as those of the first hydraulic control valve 2.
Referring to fig. 4 to 10, fig. 4 is a schematic oil path diagram of the present embodiment in a standby state, and fig. 5 to 10 are schematic oil path diagrams of the present embodiment in respective operation states. As shown in fig. 4, when the first hydraulic control valve 2 is in the channel borrowing state, the first liquid supply valve core extends, the first liquid inlet P is connected with the first liquid outlet Q, hydraulic oil is output to the next stage control valve through the channel borrowing valve groove 23, the second hydraulic control valve 3 is in the closed state, the second liquid inlet P is communicated with the second liquid return port O, hydraulic oil directly flows back to the oil tank through the liquid return port O, and the serial channel borrowing type multi-way hydraulic control device is in the standby state. As shown in fig. 5, when the two first hydraulic control valves 2 are in the channel borrowing state and the second hydraulic control valve 3 is in the open state, hydraulic oil passes through the channel borrowing valve grooves of the two first hydraulic control valves 2 and is output to the second hydraulic control valve 3 in a channel borrowing mode, meanwhile, the second liquid supply valve core of the second hydraulic control valve 3 is retracted, the second liquid inlet P is communicated with the second communication channel, hydraulic oil passes through the second hydraulic control valve 3 and is output from the output port A1, and the piston of the driving oil cylinder 4 extends out. As shown in fig. 6, when the cylinder 4 of the second hydraulic control valve 3 reaches the stroke, the second reversing valve element of the second hydraulic control valve 3 is triggered to operate, and the second reversing valve spool is output through the output port B1 to drive the piston of the cylinder 4 to retract. Fig. 7 and 8 show that when the first hydraulic control valve 2 in the middle is in an operating state, the oil supply to the lower control valve is closed, and meanwhile, the first hydraulic control valve 2 in the middle drives the piston of the oil cylinder 4 connected with the first hydraulic control valve to act, fig. 7 shows that when the output of the oil cylinder is A2, the piston of the oil cylinder is driven to extend, and fig. 8 shows that when the output of the oil cylinder is B2, the piston of the oil cylinder is driven to retract. Fig. 9 and 10 show the state of the first hydraulic control valve 2 on the left in the operating state, closing the oil supply to the lower control valve, and at the same time, the first hydraulic control valve 2 on the left drives the piston of the cylinder 4 connected with the first hydraulic control valve, fig. 9 shows that the piston of the driving cylinder is extended when A3 is output, and fig. 10 shows that the piston of the driving cylinder is retracted when B3 is output.
The serial channel-borrowing type multi-path hydraulic control device comprises a plurality of hydraulic control valves which are connected in sequence, only one hydraulic pump is needed to drive through serial and channel-borrowing functions, each hydraulic control valve can independently control the action of a hydraulic executing mechanism, complex action control such as sequential action can be realized, and the numerical control module can be replaced to control hydraulic mechanical equipment. The design is completely composed of a mechanical structure, and has the advantages of low manufacturing cost, convenient maintenance, easy operation, good stability, adaptability to various severe environments and long service life.
The above is only a preferred embodiment of the present invention, and the technical solutions for achieving the object of the present invention by substantially the same means are all within the scope of protection of the present invention.
Claims (4)
1. The serial channel-borrowing type multipath hydraulic control device is characterized in that: the hydraulic control system comprises a first hydraulic control valve and a second hydraulic control valve which are sequentially connected, wherein one or more first hydraulic control valves are arranged;
the first hydraulic control valve comprises a first valve body, a liquid supply passage valve groove and a first reversing valve groove are arranged on the first valve body, a detachable valve cover is respectively arranged on the first valve body corresponding to the liquid supply passage valve groove and the first reversing valve groove,
the first hydraulic control valve is provided with a first liquid inlet, a first liquid outlet and a first output port, the first liquid inlet is connected with a liquid outlet of the hydraulic pump or the upper control valve, the first output port is connected with the hydraulic actuating mechanism, the first hydraulic control valve controls the first liquid inlet to switch communication between the first liquid outlet and the first output port, the first liquid inlet and the first liquid outlet are arranged on the liquid supply borrowing channel valve slot, the first output port is arranged on the first reversing valve slot, a first communication channel is arranged between the liquid supply borrowing channel valve slot and the first reversing valve slot, a first liquid supply valve core is movably arranged in the liquid supply borrowing channel valve slot, a guide groove is arranged on the first liquid supply valve core, and the first liquid supply valve core acts to enable the first liquid inlet to switch connection between the first liquid outlet and the first communication channel;
the second hydraulic control valve is internally provided with a liquid supply valve groove and a second reversing valve groove, the second liquid inlet and the second liquid return opening are arranged on the liquid supply valve groove, the second output opening is arranged on the second reversing valve groove, a second communication channel is arranged between the liquid supply valve groove and the second reversing valve groove, a second liquid supply valve core is movably arranged in the liquid supply valve groove, and a guide groove is arranged on the second liquid supply valve core, so that the second liquid inlet is switched and connected between the second liquid return opening and the second communication channel;
the first reversing valve groove is provided with a first output port A and a first output port B, a first reversing valve core is movably arranged in the first reversing valve groove, the first reversing valve core is provided with a guide groove, and the first reversing valve core acts to enable the first communication channel to be switched and connected between the first output port A and the first output port B;
the second reversing valve groove is provided with a second output port A and a second output port B, a second reversing valve core is movably arranged in the second reversing valve groove, the second reversing valve core is provided with a guide groove, and the second reversing valve core acts to enable the second communication channel to be switched and connected between the second output port A and the second output port B.
2. The serial lane-borrowing type multiplexing hydraulic control apparatus according to claim 1, wherein: the first reversing valve groove is provided with a liquid return port, when the first output port A is connected with the first communication channel, the first output port B is connected with the liquid return port, and when the first output port B is connected with the first communication channel, the first output port A is connected with the liquid return port;
the second reversing valve groove is provided with a liquid return port, when the second output port A is connected with the second communication channel, the second output port B is connected with the liquid return port, and when the second output port B is connected with the second communication channel, the second output port A is connected with the liquid return port.
3. The serial lane-borrowing type multiplexing hydraulic control apparatus according to claim 1, wherein: and liquid discharge ports for discharging redundant liquid in the valve grooves are respectively arranged on the liquid supply borrowing valve groove, the first reversing valve groove, the liquid supply valve groove and the second reversing valve groove.
4. The serial lane-borrowing type multiplexing hydraulic control apparatus according to claim 1, wherein: the second hydraulic control valve comprises a second valve body, the liquid supply valve groove and the second reversing valve groove are arranged on the second valve body, and the second valve body is provided with a detachable valve cover corresponding to the liquid supply valve groove and the second reversing valve groove respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710701741.6A CN107387473B (en) | 2017-08-16 | 2017-08-16 | Tandem channel-borrowing type multipath hydraulic control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710701741.6A CN107387473B (en) | 2017-08-16 | 2017-08-16 | Tandem channel-borrowing type multipath hydraulic control device |
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| Publication Number | Publication Date |
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| CN107387473A CN107387473A (en) | 2017-11-24 |
| CN107387473B true CN107387473B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710701741.6A Active CN107387473B (en) | 2017-08-16 | 2017-08-16 | Tandem channel-borrowing type multipath hydraulic control device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108194446B (en) * | 2018-02-13 | 2024-03-19 | 冯广建 | Multi-station hydraulic signal control type oil way conversion linkage 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452937A (en) * | 2013-09-11 | 2013-12-18 | 冯广建 | Multi-channel hydraulic control valve |
| CN207261338U (en) * | 2017-08-16 | 2018-04-20 | 冯广建 | Tandem piggybacking formula multipath hydraulic control device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4453411B2 (en) * | 2004-03-18 | 2010-04-21 | コベルコ建機株式会社 | Hydraulic control device for work machine |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452937A (en) * | 2013-09-11 | 2013-12-18 | 冯广建 | Multi-channel hydraulic control valve |
| CN207261338U (en) * | 2017-08-16 | 2018-04-20 | 冯广建 | Tandem piggybacking formula multipath hydraulic control device |
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| CN107387473A (en) | 2017-11-24 |
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