CN208804055U - A kind of energy saving, buffering planogrinder workbench hydraulic system - Google Patents
A kind of energy saving, buffering planogrinder workbench hydraulic system Download PDFInfo
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- CN208804055U CN208804055U CN201821406894.4U CN201821406894U CN208804055U CN 208804055 U CN208804055 U CN 208804055U CN 201821406894 U CN201821406894 U CN 201821406894U CN 208804055 U CN208804055 U CN 208804055U
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- valve
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- buffering
- planogrinder
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Abstract
The utility model discloses a kind of energy conservations, buffering planogrinder workbench hydraulic system, and main system circuit includes fuel tank, vane pump, proportional velocity regulating valve, external control type hydraulic directional valve, workbench oil cylinder；The relief circuit that commutates includes guide's constant flow unloading valve, solenoid directional control valve, overlapping two；The oil inlet of guide's constant flow unloading valve is connected between proportional velocity regulating valve and vane pump, and the oil inlet of the oil outlet connection solenoid directional control valve of guide's constant flow unloading valve, the oil return opening of guide's constant flow unloading valve connects system oil return pipeline；The oil inlet of the oil outlet connection overlapping two of solenoid directional control valve；The control port of the oil outlet connection external control type hydraulic directional valve of overlapping two.The utility model is realized the commutation of external control type hydraulic directional valve by main system fuel feeding, while realizing the unloaded off-load of main system, reduces system no-load power consumption, realizes that system commutation buffering is realized in its energy conservation, the self-control of external control type hydraulic directional valve spool.
Description
Technical field
The utility model relates to a kind of workbench hydraulic system more particularly to a kind of energy conservations, buffering planogrinder workbench liquid
Pressure system.
Background technique
Existing hydraulic system by underneath type fuel tank 1 ', oil absorption filter 2 ', vane pump 3 ', pay pump variable vane pump 4 ',
High pressure filter 5 ', main system pressure measuring tie-in 6 ', electromagnetic relief valve 7 ', proportional velocity regulating valve 8 ', hydraulic directional valve 9 ', superposing type subtract
Pressure valve 10 ', pair pump pressure table 11 ', solenoid directional control valve 12 ', overlapping two 13 ', A chamber overflow valve 14 ', B chamber overflow
Stream valve 15 ', A chamber pressure measuring tie-in 16 ', B chamber pressure measuring tie-in 17 ', workbench oil cylinder 18 ' are formed, specific as shown in Figure 1.
Whole system is divided into main system circuit, external control type solenoid directional control valve circuit.External control type solenoid directional control valve circuit is by paying
It pumps variable vane pump 4 ' and pilot control pressure is provided, provided by stacked compression release valve 10 ' to solenoid directional control valve 12 ', it is superimposed
Formula Double throttle check valve 13 ' implements hydraulic commutation to hydraulicdirectional control valve 9 ', reaches workbench through oil cylinder 18 ' and moves back and forth requirement.
Since motor power (output) is big, flow rate of hydraulic system is big in hydraulic system main system circuit, though using electromagnetic relief valve reality
Unloaded off-load is applied, unloaded pressure is higher, causes system temperature rise higher, need to carry out using large capacity radiator to fuel tank hydraulic oil
Heat dissipation.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of energy saving, buffering planogrinder workbench hydraulic system, solve
The excessively high problem of above-mentioned hydraulic system temperature.
In order to achieve the above object, the utility model uses following technical scheme:
It is a kind of energy conservation, buffering planogrinder workbench hydraulic system, including main system circuit and with the main system circuit
The commutation relief circuit of connection；
The main system circuit include sequentially connected fuel tank, vane pump, proportional velocity regulating valve, external control type hydraulic directional valve,
Workbench oil cylinder；
The commutation relief circuit includes guide's constant flow unloading valve, solenoid directional control valve, overlapping two；
The oil inlet of guide's constant flow unloading valve is connected between the proportional velocity regulating valve and the vane pump, guide
The oil outlet of constant flow unloading valve connects the oil inlet of the solenoid directional control valve, and the oil return opening of guide's constant flow unloading valve connects system
System oil return line；
The oil return opening of the solenoid directional control valve connects system oil return pipeline, described in the oil outlet connection of the solenoid directional control valve
The oil inlet of overlapping two；
The oil outlet of the overlapping two connects the control port of the external control type hydraulic directional valve.
A kind of above-mentioned energy conservation, buffering planogrinder workbench hydraulic system, wherein guide's constant flow unloading valve includes
Valve body, the valve deck connecting with the valve body are set to the intracorporal valve pocket of the valve, the slide valve being set in the valve pocket；
The valve body, the valve pocket and the slide valve constitute forefront pressure chamber；
The valve pocket, the valve deck and the slide valve constitute guide's oil outlet chamber；
Fuel feed hole, oil return hole, oil outlet are offered on the valve pocket, the fuel feed hole connects guide's constant flow off-load
The oil inlet of valve；The oil return hole connects the oil return opening of guide's constant flow unloading valve；The oil outlet connects the guide
The oil outlet of constant flow unloading valve；The rear end sharp edge of the oil return hole and the slide valve constitutes make and break formula oil return hole；
Throttle orifice is offered in the slide valve, the throttle orifice is connected to the forefront pressure chamber and guide's oil outlet chamber.
A kind of above-mentioned energy saving, buffering planogrinder workbench hydraulic system, wherein the T of the external control type hydraulic directional valve
It is opened on spool between hydraulic fluid port and A hydraulic fluid port, between A hydraulic fluid port and P hydraulic fluid port, between P hydraulic fluid port and B hydraulic fluid port, between B hydraulic fluid port and T hydraulic fluid port
Equipped with hemispherical notch.
Above-mentioned a kind of energy saving, buffering planogrinder workbench hydraulic system, wherein the proportional velocity regulating valve and the blade
Electromagnetic relief valve is provided between pump.
Above-mentioned a kind of energy saving, buffering planogrinder workbench hydraulic system, wherein the vane pump and the electromagnetism overflow
Main system pressure measuring tie-in is connected between valve.
A kind of above-mentioned energy saving, buffering planogrinder workbench hydraulic system, wherein the external control type hydraulic directional valve oil return
Mouth is provided with superposing type oil return overflow valve and oil return pressure measuring tie-in.
Above-mentioned a kind of energy saving, buffering planogrinder workbench hydraulic system, wherein the external control type hydraulic directional valve and institute
It states and is provided with direct-acting overflow valve and pressure measuring tie-in between workbench oil cylinder.
Above-mentioned a kind of energy saving, buffering planogrinder workbench hydraulic system, wherein oil suction filtering is provided in the fuel tank
Device and return filter.
Above-mentioned a kind of energy saving, buffering planogrinder workbench hydraulic system, wherein the vane pump and the proportionality velocity modulation
High pressure filter is provided between valve.
Above-mentioned a kind of energy saving, buffering planogrinder workbench hydraulic system, wherein the tank bottoms are provided with oil circuit and open
It closes, the fuel path switch connects the vane pump and the oil absorption filter.
Using above technical scheme, can reach it is following the utility model has the advantages that
1, the utility model main system fuel feeding realizes the commutation of external control type hydraulic directional valve, while realizing the sky of main system
Loading and unloading substantially reduces system no-load power consumption, realizes its energy conservation；
2, hemispherical notch is opened up on the utility model external control type hydraulic directional valve spool, makes A, B chamber of valve in
Throttling is formed with T chamber when position to link up, and realizes system commutation buffering；
3, the utility model uses top petrol tank, to radiate；
4, the utility model oil return line installs overflow valve additional, is conducive to the stability for improving system motion.
Detailed description of the invention
Fig. 1 is existing hydraulic system principle figure；
Fig. 2 is the schematic diagram of a kind of energy conservation of the utility model, buffering planogrinder workbench hydraulic system；
Fig. 3 is the structural schematic diagram of the utility model guide's constant flow unloading valve；
Fig. 4 is the structural schematic diagram of the utility model external control type hydraulic directional valve spool.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model
It limits.
As shown in Fig. 2, a kind of energy conservation, buffering planogrinder workbench hydraulic system, including main system circuit and and principal series
It unites loop-coupled commutation relief circuit；Wherein, main system circuit includes sequentially connected fuel tank 19, vane pump 3, proportionality velocity modulation
Valve 8, external control type hydraulic directional valve 21, workbench oil cylinder 18；Commutation relief circuit includes that guide's constant flow unloading valve 27, electromagnetism change
To valve 28, overlapping two 13；The oil inlet of guide's constant flow unloading valve 27 is connected to proportional velocity regulating valve 8 and blade
Between pump 3, the oil inlet of the oil outlet connection solenoid directional control valve 28 of guide's constant flow unloading valve 27, guide's constant flow unloading valve 27
Oil return opening connect system oil return pipeline；The oil return opening of solenoid directional control valve 28 connects system oil return pipeline, solenoid directional control valve 28
The oil inlet of oil outlet connection overlapping two 13；The oil outlet of overlapping two 13 connects external control type
The control port of hydraulic directional valve 21.
The utility model main system fuel feeding realizes the commutation of external control type hydraulic directional valve 21, while realizing the sky of main system
Loading and unloading substantially reduces system no-load power consumption, realizes cooling and energy conservation.
As shown in figure 3, guide's constant flow unloading valve 27 include valve body 30, connect with valve body 30 valve deck 35, be set to valve
Valve pocket 31 in body 30, the slide valve 32 being set in valve pocket 31；Valve body 30, valve pocket 31 and slide valve 32 constitute forefront pressure chamber
50；Valve pocket 31, valve deck 35 and slide valve 32 constitute guide's oil outlet chamber 51；Fuel feed hole 47 is offered on valve pocket 31, oil return hole 48, is gone out
Oilhole 49, fuel feed hole 47 connect the oil inlet 38 of guide's constant flow unloading valve 27；Oil return hole 48 connects guide's constant flow unloading valve
27 oil return opening 40；The oil outlet 42 of the connection guide's constant flow unloading valve 27 of oil outlet 49；The rear end of oil return hole 48 and slide valve 32
Sharp edge 52 constitutes make and break formula oil return hole 53；Slide valve 32 is moved back and forth in valve pocket 31, makes the continuous make and break of make and break formula oil return hole 53, most
Achieve the effect that constantly to be closed with the oil return opening 40 of guide's constant flow unloading valve 27 eventually, be connected to.Throttling is offered in slide valve 32
Hole 33, throttle orifice 33 are connected to forefront pressure chamber 50 and guide's oil outlet chamber 51.
As shown in figure 4, the spool of external control type hydraulic directional valve 21 is made by oneself, the corresponding hydraulic fluid port of valve body is P, T, A, B, in valve
Core is in the two slide valve step 55(56 in centre) both ends and left and right oil pocket between be provided with the recess 57 of Φ 10 milling cutter deep 2.5, i.e. T oil
Spool slide valve platform between mouth and A hydraulic fluid port, between A hydraulic fluid port and P hydraulic fluid port, between P hydraulic fluid port and B hydraulic fluid port, between B hydraulic fluid port and T hydraulic fluid port
Hemispherical notch is offered on rank.
In the preferable embodiment of the utility model, electromagnetic relief valve 7 is provided between proportional velocity regulating valve 8 and vane pump 3,
Main system pressure measuring tie-in 6 is connected between vane pump 3 and electromagnetic relief valve 7.
In the preferable embodiment of the utility model, the oil return opening of external control type hydraulic directional valve 21 is provided with superposing type oil return
Overflow valve 22 and oil return pressure measuring tie-in 23 are conducive to the stability for improving planogrinder workbench cylinder movement.
In the preferable embodiment of the utility model, it is provided between external control type hydraulic directional valve 21 and workbench oil cylinder 18
A chamber direct-acting overflow valve 24, B chamber direct-acting overflow valve 25, A chamber pressure measuring tie-in 16 and B chamber pressure measuring tie-in 17.
In the preferable embodiment of the utility model, oil absorption filter 2 and return filter 26, leaf are provided in fuel tank 19
High pressure filter 5 is provided between piece pump 3 and proportional velocity regulating valve 8.
In the preferable embodiment of the utility model, 19 bottom of fuel tank is provided with fuel path switch 20, and fuel path switch 20 connects
Vane pump 3 and oil absorption filter 2 are set on fuel tank 19, and fuel tank vent is preferable, convenient for heat dissipation.
Under brief description working principle of the utility model is:
When vane pump 3 is to main system circuit fuel feeding, since external control type hydraulic directional valve 21 is in an intermediate position, oil circuit is in
Dissengaged positions, oil cylinder attonity, at this time vane pump 3 to main system commutate relief circuit fuel feeding.Through guide's constant flow unloading valve 27
It is in H shape function, through 28 oil return box of solenoid directional control valve since solenoid directional control valve 28 is in an intermediate position to solenoid directional control valve 28.This
When through guide's constant flow unloading valve 27, due to having traffic flow through throttle orifice 33, make and break formula oil return hole 53 is in "open" state,
Make the most of coming oil of vane pump 3 through this direct oil return box, main system is in unloading condition.
When solenoid valve reversal valve 28 is in operating position, vane pump 3 is to main system reversing oil circuit fuel feeding, through guide's constant flow
For unloading valve 27 to solenoid directional control valve 28, overlapping two 13 controls the commutation of external control type hydraulic directional valve 21, once it changes
To end, external control type hydraulic directional valve 21 only needs pressure at this time, does not need flow, guide's constant flow unloading valve 27, Jing Dingjie
Discharge orifice is without traffic flow, and main valve plug make and break formula oil return hole 53 under the effect of spring 34 is in "off" state, at this time main system leaf
Piece pump 3, all flows, to 18 fuel feeding of workbench oil cylinder, are in system and move back and forth work shape through external control type hydraulic directional valve 21
State.
When the utility model guide's constant flow unloading valve 27 is exactly using 33 guide's constant flow " having " of throttle orifice, make and break formula is returned
Oilhole 53 is in "open" state, and when 33 guide's constant flow "None" of throttle orifice, make and break formula oil return hole 53 is in "off" state, with
This come implement to main system commutate unloading function.
Now sketch guide's constant flow unloading valve commutation unloading function:
As system coming oil Q0Enter forefront pressure chamber 50, pressure P by oil inlet 381, on the other hand arrived through throttle orifice 33
Guide's oil outlet chamber 51, this flow are Q1, pressure P2, oil outlet 49 and oil outlet 42 are to 28 fuel feeding of solenoid directional control valve, when system sky
When load, solenoid directional control valve 28 is in an intermediate position, flow Q1Through this oil return box, determined throttle orifice 33 to have flow to be Q1, to cause
The pressure of forefront pressure chamber 50 is P1With the pressure P of guide's oil outlet chamber 512, pressure difference is Δ P=P1- P2 , act on slide valve 32
Pressure area A, overcome spring force F make make and break formula oil return hole 53 by closure in open until pressure balance, oil inlet flow Q0,
Except sub-fraction constant flow Q1, most of flow Q2= Q0- Q1, pass through 40 oil return box of oil return hole 48 and oil return opening, main system
In unloading condition.
When the system is operating, when solenoid directional control valve 28 is in commutation work, as flow Q1The double one-way throttle holes of superimposed formula
13 pairs of external control type hydraulic directional valves 21 carry out commutation control, once commutation terminates, only need pressure at this time, do not need flow Q1,
Q at this time1=0,27 constant flow Q of guide's constant flow unloading valve1=0,
Pressure differential Δ P=P of slide valve 321- P2=0, at this time slide valve 32 under the action of the spring make and break formula oil return hole 53 be in close
It closes.Flow system flow Q0All through external control type hydraulic directional valve 21 to main system fuel feeding, implement back and forth to transport workbench for oil cylinder 18
It is dynamic.
To guarantee big flow off-load, make and break formula opening 53 depends on spool diameter, oil return hole size and openings of sizes, that is, presses
Power difference Δ P size.
For this system in zero load, electromagnetic relief valve 7 is also at electromagnetism unloading condition.When flow system flow is 135 liters/min, it is
Unloaded pressure of uniting is less than 0.5MPa.
The self-control spool for now sketching external control type hydraulic directional valve solves the principle of reversing impact:
It is deep due to being provided with 10 milling cutter of Φ between the both ends of the two slide valve steps in the centre of spool 55,56 and left and right oil pocket
2.5 recess 57, therefore, when spool is in an intermediate position, A and T chamber have variable throttling communication, and B and T chamber have variable throttling communication,
For A, B chamber there are variable throttling off-load, P chamber has electromagnetic relief valve off-load and guide's constant flow off-load when to realize workbench commutation
Valve substantially reduces reversing impact, while A chamber direct-acting overflow valve 24, B chamber direct-acting overflow valve 25 in systems, once there is punching
It hits, overflow Unloading Effect can also be played.Due to taking above-mentioned technological improvement, planogrinder workbench hydraulic system working in reciprocating mode
When have apparent buffering effect.
The foregoing is merely the utility model preferred embodiment, be not intended to limit the embodiments of the present invention and
Protection scope should can appreciate that all in the utility model specification and diagram to those skilled in the art
Hold made equivalent replacement and obviously change obtained scheme, the protection model of the utility model should all be included in
In enclosing.
Claims (10)
1. it is a kind of energy conservation, buffering planogrinder workbench hydraulic system, it is characterised in that: including main system circuit and with the master
The commutation relief circuit of system circuit connection；
The main system circuit includes sequentially connected fuel tank, vane pump, proportional velocity regulating valve, external control type hydraulic directional valve, work
Platform oil cylinder；
The commutation relief circuit includes guide's constant flow unloading valve, solenoid directional control valve, overlapping two；
The oil inlet of guide's constant flow unloading valve is connected between the proportional velocity regulating valve and the vane pump, guide's constant current
The oil outlet of amount unloading valve connects the oil inlet of the solenoid directional control valve, and the oil return opening connection system of guide's constant flow unloading valve is returned
Oil pipe line；
The oil return opening of the solenoid directional control valve connects system oil return pipeline, and the oil outlet of the solenoid directional control valve connects the superposition
The oil inlet of formula Double throttle check valve；
The oil outlet of the overlapping two connects the control port of the external control type hydraulic directional valve.
2. a kind of energy conservation according to claim 1, buffering planogrinder workbench hydraulic system, it is characterised in that: the elder generation
Lead constant flow unloading valve include valve body, the valve deck being connect with the valve body, be set to the intracorporal valve pocket of the valve, be set to it is described
Slide valve in valve pocket；
The valve body, the valve pocket and the slide valve constitute forefront pressure chamber；
The valve pocket, the valve deck and the slide valve constitute guide's oil outlet chamber；
Fuel feed hole, oil return hole, oil outlet are offered on the valve pocket, the fuel feed hole connects guide's constant flow unloading valve
Oil inlet；The oil return hole connects the oil return opening of guide's constant flow unloading valve；The oil outlet connects guide's constant current
Measure the oil outlet of unloading valve；The rear end sharp edge of the oil return hole and the slide valve constitutes make and break formula oil return hole；
Throttle orifice is offered in the slide valve, the throttle orifice is connected to the forefront pressure chamber and guide's oil outlet chamber.
3. a kind of energy conservation according to claim 1, buffering planogrinder workbench hydraulic system, it is characterised in that: described outer
Between the T hydraulic fluid port and A hydraulic fluid port of control formula hydraulic directional valve, between A hydraulic fluid port and P hydraulic fluid port, between P hydraulic fluid port and B hydraulic fluid port, B hydraulic fluid port and T oil
Hemispherical notch is offered on spool between mouthful.
4. a kind of energy conservation according to claim 1, buffering planogrinder workbench hydraulic system, it is characterised in that: the ratio
Electromagnetic relief valve is provided between example speed governing valve and the vane pump.
5. a kind of energy conservation according to claim 4, buffering planogrinder workbench hydraulic system, it is characterised in that: the leaf
Main system pressure measuring tie-in is connected between piece pump and the electromagnetic relief valve.
6. a kind of energy conservation according to claim 1, buffering planogrinder workbench hydraulic system, it is characterised in that: described outer
Control formula hydraulic directional valve oil return opening is provided with superposing type oil return overflow valve and oil return pressure measuring tie-in.
7. a kind of energy conservation according to claim 1, buffering planogrinder workbench hydraulic system, it is characterised in that: described outer
Direct-acting overflow valve and pressure measuring tie-in are provided between control formula hydraulic directional valve and the workbench oil cylinder.
8. a kind of energy conservation according to claim 1, buffering planogrinder workbench hydraulic system, it is characterised in that: the oil
Oil absorption filter and return filter are provided in case.
9. a kind of energy conservation according to claim 1, buffering planogrinder workbench hydraulic system, it is characterised in that: the leaf
High pressure filter is provided between piece pump and the proportional velocity regulating valve.
10. a kind of energy conservation according to claim 8, buffering planogrinder workbench hydraulic system, it is characterised in that: the oil
Bottom portion is provided with fuel path switch, and the fuel path switch connects the vane pump and the oil absorption filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821406894.4U CN208804055U (en) | 2018-08-30 | 2018-08-30 | A kind of energy saving, buffering planogrinder workbench hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821406894.4U CN208804055U (en) | 2018-08-30 | 2018-08-30 | A kind of energy saving, buffering planogrinder workbench hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN208804055U true CN208804055U (en) | 2019-04-30 |
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ID=66236498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821406894.4U Active CN208804055U (en) | 2018-08-30 | 2018-08-30 | A kind of energy saving, buffering planogrinder workbench hydraulic system |
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| CN (1) | CN208804055U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587374A (en) * | 2019-09-30 | 2019-12-20 | 南通海润机床有限公司 | Oil pressure loop structure for gantry machine tool |
| CN111852975A (en) * | 2020-06-24 | 2020-10-30 | 合肥长源液压股份有限公司 | Buffer valve for reducing start-stop impact of hydraulic actuating mechanism |
-
2018
- 2018-08-30 CN CN201821406894.4U patent/CN208804055U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587374A (en) * | 2019-09-30 | 2019-12-20 | 南通海润机床有限公司 | Oil pressure loop structure for gantry machine tool |
| CN111852975A (en) * | 2020-06-24 | 2020-10-30 | 合肥长源液压股份有限公司 | Buffer valve for reducing start-stop impact of hydraulic actuating mechanism |
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