CN104279200A - Impulse type micro-adjustment oil supply device - Google Patents
Impulse type micro-adjustment oil supply device Download PDFInfo
- Publication number
- CN104279200A CN104279200A CN201310293837.5A CN201310293837A CN104279200A CN 104279200 A CN104279200 A CN 104279200A CN 201310293837 A CN201310293837 A CN 201310293837A CN 104279200 A CN104279200 A CN 104279200A
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- Prior art keywords
- oil
- volume
- cylinder
- hydraulic
- impulse type
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Classifications
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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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention belongs to the field of equipment for accurately positioning hydraulic executive components, and particularly discloses an impulse type micro-adjustment oil supply device. The impulse type micro-adjustment oil supply device comprises a volume oil cylinder and a direction valve for controlling the piston of the volume oil cylinder to reciprocate; the direction valve is provided with four oil ports P, T, A and B and two switching positions; the oil ports A and B are respectively connected with a left oil cavity and a right oil cavity or the right oil cavity and the left oil cavity of the volume oil cylinder; one of the oil port P and T is used for being communicated with a pressure oil source, and the other is connected with a main oil control valve of a hydraulic executive component or a pressure inlet oil circuit of an oil line. The impulse type micro-adjustment oil supply device can generate impulse type fixed-volume micro pressure oil to the hydraulic executive component to enable the hydraulic executive component to generate continuously controlled micro movement, so that an accurate positioning effect is achieved. The impulse type micro-adjustment oil supply device is simple in structure, a common hydraulic component is skillfully applied, and the impulse type micro-adjustment oil supply device has the characteristics of low cost and simple implementation and is convenient to popularize and apply.
Description
Technical field
The invention belongs to field of hydraulic control, be specifically related to the pinpoint oil hydraulic circuit of a kind of hydraulic control executive component and device.
Background technique
At present, hydraulic actuator is in movement process, sometimes need to locate accurately certain half-way in its movement process, in prior art, in order to realize this purpose, usual employing servovalve adds position feedback and forms closed-loop system and realize, but this mode due to the servovalve price eighteenth of the twenty expensive, and belong to high-precision hydraulic element due to servovalve, in use also need ECU (Electrical Control Unit) and the filter of configure dedicated, thus make overall manufacture cost very high, structure is comparatively complicated, these all limit its occupancy in actual applications, number of users is limited, also the combination by several oil cylinders is had in addition, in conjunction with the start-stop stroke limit that every oil cylinder is own, thus reach the object can located at several fixed position, its defect can only be located at several special position exactly, the combination of many oil cylinders simultaneously also makes mechanical structure become more complicated, also can be subject to the shape restriction of relevant component in practical application, affect integral layout.
Summary of the invention
Problem to be solved by this invention develops a kind of hydraulic pressure installation, it can make hydraulic actuator in its stroke or angle range, realize the accurate location of arbitrary position, have the feature that structure is simple, control is convenient and cost is low concurrently simultaneously, thus reduce use threshold, become the preferred product that most of user can afford to use, use good.
Technical problem of the present invention is implemented by the following technical programs: pulsed fine setting oil supplying device, the piston comprising volume oil cylinder and control volume oil cylinder produces reciprocating directional control valve, described volume oil cylinder has one can along the reciprocating piston of inner chamber of cylinder block, inner chamber of cylinder block isolation is formed left oil pocket and right oil pocket by piston, and left and right oil pocket is provided with the hydraulic fluid port be connected with the external world; Described directional control valve has four hydraulic fluid ports P, T, A, B and two switching positions, between P, T hydraulic fluid port and A, B hydraulic fluid port, a switching position in office all forms two groups of paths, the left oil pocket of one of them connection volume oil cylinder of A, B hydraulic fluid port, another connects the right oil pocket of volume oil cylinder, P, T hydraulic fluid port one of them for receiving pressure oil-source, another be connected to control required fine setting location the fuel tap of executive component or the pressure entrance O oil circuit of oil circuit on; When in P, T hydraulic fluid port for receiving the hydraulic fluid port cut-in pressure oil sources of pressure oil-source time, namely control volume oil cylinder generation pulsed pressure oil by switching direction valve position and export the master control fuel tap of described hydraulic actuator or the pressure entrance O of oil circuit to, by the control of master control fuel tap or oil circuit, make hydraulic actuator produce trace movement, thus realize pinpoint effect.
The piston of volume oil cylinder as above terminates to left movement or moves right to terminate to form the right oil pocket of fixed volume or left oil pocket; The positioning precision that oil pocket volume can reach needed for hydraulic actuator and designing, such as the oil hydraulic cylinder of one of hydraulic actuator kind, when positioning accuracy request is less than 1mm, oil pocket can be designed to drive oil hydraulic cylinder to move the volume of 1mm at every turn, when positioning accuracy request is less than 0.1mm, oil pocket can be designed to drive oil hydraulic cylinder to move the volume of 0.1mm at every turn.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention exports the pressure oil of discrete fixed volume by pulsed fine setting fuel oil supply unit, reach the object of fine setting hydraulic actuator stop position, thus realize accurately location, hydraulic actuator can accurately be stopped at can any position of actuating range, if increase another can break-make control pressure channel provide continuous print pressure oil to hydraulic actuator, then can play can quick acting, again can pinpoint object.
In the present invention, the oil pocket volume size of volume oil cylinder can need according to control accuracy and design, and therefore tunable performance is good, applied widely, easy to use and reliable.
The hydraulic actuator used in the present invention and electric control element are common components and parts, and integral manufacturing cost is low, and control circuit is also very simple, and technical threshold is low, has mass foundation widely, easy to utilize.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention
Fig. 2 is the specific embodiment of the invention 1 schematic diagram
Fig. 3 is the specific embodiment of the invention 2 schematic diagram
Embodiment
Below in conjunction with above-mentioned accompanying drawing, the present invention is described in detail again, first embodiment: the present embodiment is for accurately locating by pulsed fine setting oil supplying device hydraulic control cylinder of the present invention, as shown in Figure 2, pressure oil-source 10 is divided into two-way, wherein a road is connected to the P hydraulic fluid port of the directional control valve 4 in pulsed of the present invention fine setting oil supplying device, another road connects and is connected with the T hydraulic fluid port of directional control valve 4 after switch valve 3 and is jointly connected to the pressure entrance O of directional control valve group M, described pulsed fine setting oil supplying device comprises volume oil cylinder 5 and directional control valve 4, directional control valve 4 has hydraulic fluid port P, T, A, B, wherein A, B hydraulic fluid port respectively connected the left oil pocket A1 of volume oil cylinder 5, right oil pocket B1, directional control valve group M is used for hydraulic control cylinder 8 generation and stretches out and retract action, when pressure entrance O cut-in pressure oil sources, 1DT obtains electric, the rodless cavity of oil hydraulic cylinder 8 connected by pressure oil after relevant cartridge valve, and rod chamber connects oil circuit 20 oil extraction after relevant cartridge valve simultaneously, and oil hydraulic cylinder 8 performs extend action, 2DT obtains electric, the rod chamber of oil hydraulic cylinder 8 connected by pressure oil after relevant cartridge valve, and rodless cavity connects oil circuit 20 oil extraction after relevant cartridge valve simultaneously, and oil hydraulic cylinder 8 performs retract action.
When switch valve 3 is in left position, the pressure entrance O of pressure oil-source direct connecting direction valve group M, as long as now 1DT or 2DT obtains electric, continuous print can be produced stretch out or retract action by hydraulic control cylinder 8, when piston rod roughly moves to precalculated position, switch valve 3 is switched to right position, thus opening pressure oil sources is connected with the direct of pressure entrance O, simultaneously, directional control valve 4 is switched by right position, the piston of volume oil cylinder 5 is driven to produce bilateral reciprocation, and to-and-fro motion can make a left side, the pressure oil that right oil pocket discharges fixed volume is successively expelled to the pressure entrance O of directional control valve group M by T hydraulic fluid port, and then drive oil hydraulic cylinder 8 to produce micro-displacement action, direction of action obtains electric control by 1DT or 2DT as required, until arrival precalculated position, complete pinpoint task, the oil pocket that the left and right oil pocket of volume oil cylinder 5 compares oil hydraulic cylinder 8 has less volume, volume size can design according to positioning accuracy request, when positioning accuracy request is less than 1mm, the oil pocket of volume oil cylinder 5 can be designed to oil hydraulic cylinder 8 can only be driven to move the volume of 1mm at every turn, when positioning accuracy request is less than 0.1mm, the oil pocket of volume oil cylinder 5 can be designed to oil hydraulic cylinder 8 can only be driven to move the volume of 0.1mm at every turn.
Second embodiment: the present embodiment is to predetermined angular position by pulsed fine setting oil supplying device hydraulic control motor fine rotational of the present invention, as shown in Figure 3, pressure oil-source 10 is divided into two-way after controlling directional control valve 6 by pressure channel, the pressure entrance O of directional control valve 2 is jointly connected to after the T hydraulic fluid port of the directional control valve 4 that one tunnel and pulsed of the present invention are finely tuned in oil supplying device is communicated with, another road is connected to the P hydraulic fluid port of the directional control valve 4 in pulsed of the present invention fine setting oil supplying device, described pulsed fine setting oil supplying device comprises volume oil cylinder 5 and directional control valve 4, directional control valve 4 has hydraulic fluid port P, T, A, B, wherein A, B hydraulic fluid port respectively connected the left oil pocket A1 of volume oil cylinder 5, right oil pocket B1, directional control valve 2 is the reversing control valve of oil hydraulic motor 1, when pressure entrance O cut-in pressure oil sources, directional control valve 2 switches to left position or right position and can import pressure oil to oil hydraulic motor 1 and make oil hydraulic motor 1 to oil circuit 20 oil extraction, thus hydraulic control motor 1 realizes forward or reverse.
When passage control directional control valve 6 is in left position, the pressure entrance O of the direct communication direction valve 2 of pressure oil-source, as long as now directional control valve 2 is switched to left position or right position, the action of continuous print forward or reverse can be produced by hydraulic control motor 1, when oil hydraulic motor 1 roughly moves to predetermined angular orientation, directional control valve 2 is switched to neutral position, passage is controlled directional control valve 6 to be switched to right position and to make pressure oil-source 10 connect the P hydraulic fluid port of directional control valve 4 simultaneously, then by pulsed fine setting oil supplying device of the present invention, pressure entrance O to directional control valve 2 provides the micro-pulsed pressure oil with fixed volume, and then produce micro-angular turn by directional control valve 2 hydraulic control motor 1, sense of rotation can be controlled by directional control valve 2 as required, until reach predetermined angular position, complete accurate location.In the present embodiment, the principle of the pulse micro pressure oil of pulsed fine setting oil supplying device output fixed volume is identical with the first embodiment, just no longer repeats to set forth at this.
The present invention is not limited to above-mentioned mode of execution, if do not depart from the spirit and scope of the present invention to various change of the present invention or modification, if these are changed and modification belongs within claim of the present invention and equivalent technologies scope, then the present invention also comprises these change and modification.
Claims (3)
1. pulsed fine setting oil supplying device, is characterized in that: the piston comprising volume oil cylinder and control volume oil cylinder produces reciprocating directional control valve.
2. the pulsed fine setting oil supplying device according to claim 1, it is characterized in that: described volume oil cylinder has one can along the reciprocating piston of inner chamber of cylinder block, inner chamber of cylinder block isolation is formed left oil pocket and right oil pocket by piston, and left and right oil pocket is provided with the hydraulic fluid port be connected with the external world.
3. the pulsed fine setting oil supplying device according to claim 1 and 2, it is characterized in that: described directional control valve has four hydraulic fluid ports P, T, A, B and two switching positions, between P, T hydraulic fluid port and A, B hydraulic fluid port, a switching position in office all forms two groups of paths, the left oil pocket of one of them connection volume oil cylinder of A, B hydraulic fluid port, another connects the right oil pocket of volume oil cylinder, P, T hydraulic fluid port one of them for receiving pressure oil-source, another be connected to control required fine setting location the fuel tap of executive component or the pressure entrance oil circuit of oil circuit on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310293837.5A CN104279200A (en) | 2013-07-03 | 2013-07-03 | Impulse type micro-adjustment oil supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310293837.5A CN104279200A (en) | 2013-07-03 | 2013-07-03 | Impulse type micro-adjustment oil supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104279200A true CN104279200A (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310293837.5A Pending CN104279200A (en) | 2013-07-03 | 2013-07-03 | Impulse type micro-adjustment oil supply device |
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| Country | Link |
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| CN (1) | CN104279200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048102A (en) * | 2021-03-18 | 2021-06-29 | 湖州环丰机械有限公司 | Novel fast-acting hydraulic oil cylinder with energy accumulator |
-
2013
- 2013-07-03 CN CN201310293837.5A patent/CN104279200A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048102A (en) * | 2021-03-18 | 2021-06-29 | 湖州环丰机械有限公司 | Novel fast-acting hydraulic oil cylinder with energy accumulator |
| CN113048102B (en) * | 2021-03-18 | 2023-03-10 | 湖州环丰机械有限公司 | Novel fast-acting hydraulic oil cylinder with energy accumulator |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150114 |