CN102815008A - Novel hydraulic mechanism of two hydraulic systems - Google Patents
Novel hydraulic mechanism of two hydraulic systems Download PDFInfo
- Publication number
- CN102815008A CN102815008A CN 201110161760 CN201110161760A CN102815008A CN 102815008 A CN102815008 A CN 102815008A CN 201110161760 CN201110161760 CN 201110161760 CN 201110161760 A CN201110161760 A CN 201110161760A CN 102815008 A CN102815008 A CN 102815008A
- Authority
- CN
- China
- Prior art keywords
- oil
- hydraulic
- valve
- communicates
- return mouth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
Disclosed is a novel hydraulic mechanism of two hydraulic systems. The novel hydraulic mechanism is composed of a hydraulic cylinder and a hydraulic system connected with the hydraulic cylinder, and is characterized in that a piston of the hydraulic cylinder is composed of two different portions with different diameters. The piston divides the hydraulic cylinder into A1, A2 and A3 altogether tree hydraulic chambers, and the hydraulic system achieves the fast forwarding-pressure maintaining-fast reversing-resetting of the piston and keeps the technological process through three different oil providing modes for the tree hydraulic chambers of A1, A2 and A3. The novel hydraulic mechanism of two hydraulic systems has the advantages of simple device, low cost, low fault rate, few energy consumption and high efficiency.
Description
Technical field
The present invention relates to a kind of hydraulic mechanism of two cover hydraulic systems, particularly a kind of hydraulic mechanism of novel two cover hydraulic systems belongs to the hydraulic machinery technical field.
Background technology
Hydraulic press is a kind of plant equipment that realizes technical process through pressure, in many technology occasions, needs hydraulic press to realize subordinate's operation cycle, that is: F.F.-pressurization-pressurize-rewind down-reset and stopping.In order to realize above-mentioned operation cycle, the hydraulic system of hydraulic press needs very big flow when fast feed, and the flow during pressurization is then very little; And when pressurize, flow is merely the flow of internal leakage, correspondingly; On Design of Hydraulic System and structure; General low pressure and mass flow hydraulic pump and the high-pressure low-flow pump associating fuel feeding of adopting, under the control of control system, two hydraulic pumps are handed over according to corresponding situation with passing and are switched.The hydraulic press of this structure, owing to adopt biliquid press pump fuel feeding, two cover hydraulic systems, so, there is complex structure, the defective that equipment cost and fault rate are higher simultaneously, also exists energy loss higher, the defective that efficient is lower.
Summary of the invention
The objective of the invention is to: a kind of hydraulic mechanism of novel two cover hydraulic systems is provided, overcomes the existing complex structure of above-mentioned hydraulic mechanism, equipment cost and fault rate is higher, energy loss is higher, efficient is lower defective.
The present invention realizes that the technical scheme that above-mentioned purpose adopts is: a kind of hydraulic mechanism of novel two cover hydraulic systems; It is made up of oil filter, hydraulic pump, check valve, overflow valve, solenoid directional control valve, sequence valve, hydraulic cylinder, pressure switch A, pressure switch B, prefill valve, top petrol tank, fuel tank; Hydraulic press has a hydraulic cylinder; The piston of hydraulic cylinder is partitioned into A1, A2, A3 totally 3 hydraulic chamber with hydraulic cylinder; Each hydraulic chamber communicates with oil inlet and oil return mouth a, b, c, and the oil-in of hydraulic pump directly communicates with fuel tank through oil filter, makes the circulating direction of check valve consistent with hydraulic pump oil-out direction; And simultaneously check valve is connected between the oil-in of hydraulic pump oil-out and solenoid directional control valve; The oil-out of solenoid directional control valve directly communicates with fuel tank, the oil-in of overflow valve is connected on the oil circuit between the oil-in of check valve and solenoid directional control valve, and one of them oil-out of solenoid directional control valve communicates with the A1 chamber of hydraulic cylinder through oil inlet and oil return mouth a; The control port of pressure switch B communicates with the oil circuit that is connected oil inlet and oil return mouth a; The another one oil-out of solenoid directional control valve communicates with the A2 chamber of hydraulic cylinder through oil inlet and oil return mouth b, and the control port of pressure switch A communicates with the oil circuit that is connected oil inlet and oil return mouth b, and the oil-in of sequence valve communicates with the oil circuit that is connected oil inlet and oil return mouth b; The oil-out of sequence valve links to each other with the outlet of the forward of prefill valve; Directly communicating with top petrol tank by a mouthful end of prefill valve, the control port of prefill valve communicates with the oil circuit that is connected oil inlet and oil return mouth a, and oil inlet and oil return mouth c is communicated with pipeline between sequence valve, the prefill valve with pipeline.
Operation principle of the present invention is: when solenoid directional control valve was in location right, pressure oil got into the completion F.F. action of A2 chamber from the oil inlet and oil return mouth b of oil cylinder, and at this moment, the oil in the top petrol tank gets into the A3 chamber through prefill valve, oil inlet and oil return mouth c; For pressurization the time is prepared, when pressure reached the setting value of sequence valve, pressure oil was through sequence valve, from oil inlet and oil return mouth c, from oil inlet and oil return mouth b simultaneously to A3 chamber, the pressurization of A2 chamber; Simultaneously, close prefill valve, at this moment, the work area of hydraulic cylinder be A3 chamber, A2 cavity area and; Be the function that A2+A3 realizes pressurization, when compression strength reached the setting value of pressure switch B, pressure switch B sent control signal, and solenoid directional control valve mediates; Beginning pressurize work is after pressurize work is accomplished, under the effect of control element; Solenoid directional control valve is in left position, and pressure oil gets into the A1 chamber from oil inlet and oil return mouth a, and opens prefill valve simultaneously; Make the oil in A3 chamber, A2 chamber flow back to fuel tank, thereby accomplish the work of rewind down, behind the piston reset; Through after a while stop, under the effect of corresponding control system, continue to accomplish above-mentioned action.
Beneficial effect: the present invention is because after adopting such scheme; Need not biliquid press pump fuel feeding, two cover hydraulic systems; Just can realize piston F.F.-pressurization-pressurize-rewind down-reset and stop operation cycle to have that equipment is simple, cost is low, fault rate is low, a consuming little energy, advantage that efficient is high.
Description of drawings
Following structure accompanying drawing is described further structure of the present invention;
Fig. 1 is a principle assumption diagram of the present invention;
Shown in the figure: 1, oil filter; 2, hydraulic pump; 3, check valve; 4, overflow valve; 5, solenoid directional control valve; 6, sequence valve; 7, hydraulic cylinder; 8, pressure switch A; 9, pressure switch B; 10, prefill valve; 11, top petrol tank; 12, fuel tank.
The specific embodiment
Hydraulic press has a hydraulic cylinder 7; The piston of hydraulic cylinder 7 is partitioned into A1, A2, A3 totally 3 hydraulic chamber with hydraulic cylinder 7; Each hydraulic chamber communicates with oil inlet and oil return mouth a, b, c, and the oil-in of hydraulic pump 2 directly communicates with fuel tank 12 through oil filter 1, makes the circulating direction of check valve 3 consistent with hydraulic pump 2 oil-out directions; And simultaneously check valve 3 is connected between the oil-in of hydraulic pump 2 oil-outs and solenoid directional control valve 5; The oil-out of solenoid directional control valve 5 directly communicates with fuel tank 12, the oil-in of overflow valve 4 is connected on the oil circuit between the oil-in of check valve 3 and solenoid directional control valve 5, and one of them oil-out of solenoid directional control valve 5 communicates with the A1 chamber of hydraulic cylinder 7 through oil inlet and oil return mouth a; The control port of pressure switch B9 communicates with the oil circuit that is connected oil inlet and oil return mouth a; The another one oil-out of solenoid directional control valve 5 communicates with the A2 chamber of hydraulic cylinder 7 through oil inlet and oil return mouth b, and the control port of pressure switch A8 communicates with the oil circuit that is connected oil inlet and oil return mouth b, and the oil-in of sequence valve 6 communicates with the oil circuit that is connected oil inlet and oil return mouth b; The oil-out of sequence valve 6 links to each other with the forward outlet of prefill valve 10; Directly communicating with top petrol tank 11 by a mouthful end of prefill valve 10, the control port of prefill valve 10 communicates with the oil circuit that is connected oil inlet and oil return mouth a, and oil inlet and oil return mouth c is communicated with pipeline between sequence valve 6, the prefill valve 10 with pipeline.
Claims (3)
1. one kind novel two is overlapped the hydraulic mechanism of hydraulic systems; It is characterized in that: hydraulic press has a hydraulic cylinder (7); The piston of hydraulic cylinder (7) is partitioned into (A1), (A2), (A3) totally 3 hydraulic chamber with hydraulic cylinder (7); Each hydraulic chamber communicates with oil inlet and oil return mouth (a) and (b), (c), and the oil-in of hydraulic pump (2) directly communicates with fuel tank (12) through oil filter (1), makes the circulating direction of check valve (3) consistent with hydraulic pump (2) oil-out direction; And simultaneously check valve (3) is connected between the oil-in of hydraulic pump (2) oil-out and solenoid directional control valve (5), the oil-out of solenoid directional control valve (5) directly communicates with fuel tank (12).
2. the hydraulic mechanism of a kind of novel two cover hydraulic systems according to claim 1; It is characterized in that: the oil-in of overflow valve (4) is connected on the oil circuit between the oil-in of check valve (3) and solenoid directional control valve (5); One of them oil-out of solenoid directional control valve (5) communicates with (A1) chamber of hydraulic cylinder (7) through oil inlet and oil return mouth (a); The control port of pressure switch B (9) communicates with the oil circuit that is connected oil inlet and oil return mouth (a); The another one oil-out of solenoid directional control valve (5) communicates with (A2) chamber of hydraulic cylinder (7) through oil inlet and oil return mouth (b); The control port of pressure switch A (8) communicates with the oil circuit that is connected oil inlet and oil return mouth (b), and the oil-in of sequence valve (6) communicates with the oil circuit that is connected oil inlet and oil return mouth (b).
3. the hydraulic mechanism of a kind of novel two cover hydraulic systems according to claim 2; It is characterized in that: the oil-out of sequence valve (6) links to each other with the forward outlet of prefill valve (10); Directly communicating with top petrol tank (11) of prefill valve (10) by a mouthful end; The control port of prefill valve (10) communicates with the oil circuit that is connected oil inlet and oil return mouth (a), and oil inlet and oil return mouth (c) is communicated with pipeline between sequence valve (6), the prefill valve (10) with pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161760 CN102815008A (en) | 2011-06-08 | 2011-06-08 | Novel hydraulic mechanism of two hydraulic systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161760 CN102815008A (en) | 2011-06-08 | 2011-06-08 | Novel hydraulic mechanism of two hydraulic systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102815008A true CN102815008A (en) | 2012-12-12 |
Family
ID=47299617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110161760 Pending CN102815008A (en) | 2011-06-08 | 2011-06-08 | Novel hydraulic mechanism of two hydraulic systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102815008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142110A (en) * | 2018-08-02 | 2019-01-04 | 河北工业大学 | Contact fatigue test hydraulic loading system |
| CN110093801A (en) * | 2019-04-24 | 2019-08-06 | 华南理工大学 | A kind of machine, liquid linkage adjust the conical refiner of forward and back knife and defibrination than pressure |
-
2011
- 2011-06-08 CN CN 201110161760 patent/CN102815008A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142110A (en) * | 2018-08-02 | 2019-01-04 | 河北工业大学 | Contact fatigue test hydraulic loading system |
| CN110093801A (en) * | 2019-04-24 | 2019-08-06 | 华南理工大学 | A kind of machine, liquid linkage adjust the conical refiner of forward and back knife and defibrination than pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104196785B (en) | A kind of closed type energy-saving type shield propulsion hydraulic system using multiplex pump to drive | |
| CN201776935U (en) | Hydraulic machine with two sets of hydraulic system structures | |
| CN203769811U (en) | Self-help supercharging system with hydraulic supercharger and upright columns for hydraulic support | |
| CN204458573U (en) | A kind of hydraulic system of electromagnetic priority valve durability test | |
| CN204572610U (en) | A kind of new work engine hydraulic starting valve group and the hydraulic activating system set up by it | |
| CN102815008A (en) | Novel hydraulic mechanism of two hydraulic systems | |
| CN203384136U (en) | Speed exchange circuit with parallel speed control valves | |
| CN105822623A (en) | Hydraulic testing system for hydraulic oil cylinder detection | |
| CN205001266U (en) | High pressure hydraulic pressure supercharging device | |
| CN202031822U (en) | Integral-type concrete pump high-low-pressure switching device | |
| CN102275329A (en) | Hydraulic press with two sets of hydraulic system structures | |
| CN103557193B (en) | For the hydraulic system of formation sampling instrument | |
| CN109630488A (en) | One pushes away the multistage hydraulic execution distributor for guaranteeing synchronization | |
| CN203144016U (en) | Ultrahigh voltage electric hydraulic pump station | |
| CN102242752A (en) | Structure of novel hydraulic press | |
| CN209458210U (en) | The hydraulic commutation denoising device of natural gas compression equipment | |
| CN203174660U (en) | Load-sensitive control system of loading machine | |
| CN208546373U (en) | One pushes away the multistage hydraulic execution distributor for guaranteeing synchronization | |
| CN202767158U (en) | Hydraulic excavator flow out of valve regenerating device | |
| CN204041367U (en) | A kind of three grades of oil hydraulic pumps | |
| CN203532126U (en) | Switching valve of high-pressure common-rail fuel injection pump | |
| CN203560194U (en) | Retreating type rapid oil discharging circuit of oil cylinder of hydraulic machine | |
| CN203384138U (en) | Speed exchange circuit with serially-connected speed control valves | |
| CN202344016U (en) | Hydraulic device for plate shearing machine with adjustable angle | |
| CN202883548U (en) | Grate cooler buffering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121212 |