CN203978967U - A kind of high-volume hydraulic commutation loop with interlocking function - Google Patents
A kind of high-volume hydraulic commutation loop with interlocking function Download PDFInfo
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- CN203978967U CN203978967U CN201420423719.1U CN201420423719U CN203978967U CN 203978967 U CN203978967 U CN 203978967U CN 201420423719 U CN201420423719 U CN 201420423719U CN 203978967 U CN203978967 U CN 203978967U
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Abstract
The utility model has been announced a kind of high-volume hydraulic commutation loop with interlocking function, comprise the first two-position four-way solenoid directional control valve, the second two-position four-way solenoid directional control valve, the first shuttle valve and the second shuttle valve, the control chamber hydraulic fluid port of the first two-way plug-in valve is communicated with the oil outlet of the first shuttle valve, the first filler opening of the first shuttle valve is communicated with the first oil outlet of the first two-position four-way solenoid directional control valve, the second filler opening of the first shuttle valve is communicated with the second oil outlet of the second two-position four-way solenoid directional control valve, the control chamber hydraulic fluid port of the 4th two-way plug-in valve is communicated with the oil outlet of the second shuttle valve, the first filler opening of the second shuttle valve is communicated with the first oil outlet of the second two-position four-way solenoid directional control valve, the second filler opening of the second shuttle valve is communicated with the second oil outlet of the second two-position four-way solenoid directional control valve, advantage is realize when one of them two-position four-way solenoid directional control valve breaks down oil hydraulic cylinder reliably locked, has ensured the safety of hydraulic machinery equipment.
Description
Technical field
The utility model relates to a kind of high-volume hydraulic commutation loop, especially relates to a kind of high-volume hydraulic commutation loop with interlocking function.
Background technique
Hydraulic driven commutation loop can be exported larger thrust or moment of torsion, can make the executive components such as hydraulic piston cylinder operate steadily, and when the moving element simultaneously making commutates, without impact, reaction velocity is fast, can frequently commutate.Existing hydraulic commutating circuit is realized interlocking function by plate type reversing valve, and this hydraulicdirectional control valve utilizes spool in valve body, to make relative movement flow direction change, switches on or off oil circuit, thus control executive component commutation, start or stop.Owing to commonly using the maximum diameter of plate type reversing valve, be 32 latus rectums, its peak rate of flow can reach 1000L/min, and more than the through-flow flow of the hydraulic equipments such as large hydraulic press, large-sized bender reaches 1000L/min conventionally, thereby existing plate type reversing valve can not meet the needs of through-flow flow.
Chinese utility model patent CN201320388830.7 discloses a kind of high-volume hydraulic commutation loop with interlocking function, this large flow two-way plug-in valve speed-regulating hydraulic control valve group essence is a kind of hydraulic driven commutation loop, comprise system filler opening, system oil return mouth, the first two-way plug-in mounting relief valve, the first two-way cartridge insertion direction valve, the second two-way plug-in mounting relief valve, the second two-way cartridge insertion direction valve, one-way valve, oil cylinder, 3-position 4-way solenoid directional control valve and two-way plug-in mounting throttle valve, system oil outlet respectively with the filler opening of the first two-way plug-in mounting relief valve, the filler opening of the first two-way cartridge insertion direction valve, the filler opening of two-way plug-in mounting throttle valve and the filler opening of 3-position 4-way solenoid directional control valve are communicated with, the oil outlet of the first two-way plug-in mounting relief valve is communicated with system oil return mouth, the oil outlet of the first cartridge insertion direction valve is communicated with the filler opening of the second plug-in mounting slime flux valve, first oil outlet of two-way cartridge insertion direction valve and the bar chamber of oil cylinder are communicated with, the control mouth of the first cartridge insertion direction valve is communicated with the working hole of 3-position 4-way solenoid directional control valve, the control mouth of the second two-way plug-in mounting relief valve is communicated with the filler opening of one-way valve, the oil outlet of one-way valve is communicated with the working hole of 3-position 4-way solenoid directional control valve, the return opening of 3-position 4-way solenoid directional control valve is communicated with system oil return mouth, the oil outlet of two-way plug-in mounting throttle valve is communicated with the plug chamber of oil cylinder, the oil outlet of two-way plug-in mounting throttle valve is communicated with the filler opening of the second two-way cartridge insertion direction valve, the oil outlet of the second two-way cartridge insertion direction valve is communicated with system oil return mouth, the control mouth of two-way plug-in mounting throttle valve is communicated with the working hole of 3-position 4-way solenoid directional control valve, the control mouth of the second two-way cartridge insertion direction valve is communicated with the working hole of 3-position 4-way solenoid directional control valve.
The working principle of above-mentioned large flow two-way plug-in valve speed-regulating hydraulic control valve group is: the first two-way cartridge insertion direction valve, the second two-way cartridge insertion direction valve, the second two-way plug-in mounting relief valve and-function of the main part of two-way plug-in mounting throttle valve belongs to two-way plug-in valve category, this large flow two-way plug-in valve speed-regulating hydraulic control valve group adopts 3-position 4-way solenoid directional control valve to control 4 large flow commutation loop of the incompatible realization of logical groups as the two-way plug-in valve of main as pilot stage.
But, there is following defect in above-mentioned large flow two-way plug-in valve speed-regulating hydraulic control valve group: once solenoid directional control valve breaks down, pressure oil runner is blocked, pressure oil cannot enter wherein in the middle of the two-way plug-in valve control chamber of 2, the phenomenon that there will be the spool of two-way plug-in valve not close, can not reliable locked oil hydraulic cylinder, make hydraulic machinery equipment there is very large potential safety hazard.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of high-volume hydraulic commutation loop with interlocking function that can reliable locked oil hydraulic cylinder, this structure is introduced the pressure selection function of shuttle valve, make the rod chamber of hydraulic piston cylinder and the interlocking of the pressure oil of rodless cavity, guarantee the motion credibility of hydraulic piston cylinder, reduce fault, accident rate even.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of high-volume hydraulic commutation loop with interlocking function, comprises hydraulic piston cylinder, hydraulic oil source, hydraulic oil container, controller, the first two-way plug-in valve, the second two-way plug-in valve, the 3rd two-way plug-in valve and the 4th two-way plug-in valve;
The oil outlet of described hydraulic oil source is communicated with the first hydraulic fluid port of described the second two-way plug-in valve and the first hydraulic fluid port of described the 3rd two-way plug-in valve respectively, the second hydraulic fluid port of the second described two-way plug-in valve is communicated with the rodless cavity of the second hydraulic fluid port of described the first two-way plug-in valve and described hydraulic piston cylinder respectively, the second hydraulic fluid port of the 3rd described two-way plug-in valve is communicated with the rod chamber of the second hydraulic fluid port of described the 4th two-way plug-in valve and described hydraulic piston cylinder respectively, the first hydraulic fluid port of the first hydraulic fluid port of the first described two-way plug-in valve and described the 4th two-way plug-in valve is communicated with described hydraulic oil container respectively,
Also comprise the first shuttle valve and the second shuttle valve, described controller comprises the first two-position four-way solenoid directional control valve and the second two-position four-way solenoid directional control valve, and described hydraulic oil source is communicated with the filler opening of described the first two-position four-way solenoid directional control valve and the filler opening of described the second two-position four-way solenoid directional control valve respectively;
The return opening of the first described two-position four-way solenoid directional control valve is communicated with described hydraulic oil container, and the return opening of the second described two-position four-way solenoid directional control valve is communicated with described hydraulic oil container;
The control chamber hydraulic fluid port of the first described two-way plug-in valve is communicated with the oil outlet of the first described shuttle valve, the first filler opening of the first described shuttle valve is communicated with the first oil outlet of described the first two-position four-way solenoid directional control valve, and the second filler opening of the first described shuttle valve is communicated with the second oil outlet of described the second two-position four-way solenoid directional control valve;
The control chamber hydraulic fluid port of the 4th described two-way plug-in valve is communicated with the oil outlet of the second described shuttle valve, the first filler opening of the second described shuttle valve is communicated with the first oil outlet of described the second two-position four-way solenoid directional control valve, and the second filler opening of the second described shuttle valve is communicated with the second oil outlet of described the first two-position four-way solenoid directional control valve.
Also comprise security component, described security component comprises the first direct-acting overflow valve and the second direct-acting overflow valve;
The described filler opening of the first direct-acting overflow valve and the rodless cavity of described hydraulic piston cylinder are communicated with, the described filler opening of the second direct-acting overflow valve and the rod chamber of described hydraulic piston cylinder are communicated with, and the return opening of the return opening of the first described direct-acting overflow valve and the second described direct-acting overflow valve is communicated with described hydraulic oil container respectively;
In running order when hydraulic piston cylinder, the pressure of the pressure oil of rodless cavity is during higher than the setting pressure of the first direct-acting overflow valve, and the pressure oil of rodless cavity is got back to hydraulic oil container through the first direct-acting overflow valve;
In running order when hydraulic piston cylinder, the pressure of the pressure oil of rod chamber is during higher than the setting pressure of the second direct-acting overflow valve, and the pressure oil of rod chamber is got back to hydraulic oil container through the second direct-acting overflow valve;
Once the pressure on rodless cavity and rod chamber oil circuit, be greater than the setting safety pressure value of the first direct-acting overflow valve or the second direct-acting overflow valve; this direct-acting overflow valve can be opened automatically; make pressure oil get back to hydraulic oil container, protected hydraulic piston cylinder and hydraulic machinery equipment.
The setting pressure of the setting pressure of the first described direct-acting overflow valve and the second described direct-acting overflow valve is higher by 10% than the setting pressure of described hydraulic oil source, the setting safety pressure value that is more than or equal to the first direct-acting overflow valve or the second direct-acting overflow valve once the pressure on rodless cavity and rod chamber oil circuit, this direct-acting overflow valve can be opened automatically.
Described security component also comprises 3-position 4-way solenoid directional control valve, the first oil outlet of described 3-position 4-way solenoid directional control valve is communicated with the rodless cavity of described hydraulic piston cylinder, the second oil outlet of described 3-position 4-way solenoid directional control valve is communicated with the rod chamber of described hydraulic piston cylinder, and the return opening of described 3-position 4-way solenoid directional control valve is communicated with described hydraulic oil container;
3-position 4-way solenoid directional control valve has the first electromagnet and second electromagnet of answering back for controlling the first oil outlet, the second oil outlet and oil;
When the first electromagnet of 3-position 4-way solenoid directional control valve and the second electromagnet dead electricity, the work of 3-position 4-way solenoid directional control valve meta, the first oil outlet, the second oil outlet and return opening are in closed condition;
When the first electromagnet of 3-position 4-way solenoid directional control valve obtains when electric, the position work of 3-position 4-way solenoid directional control valve intersection, the first oil outlet and return opening are in open mode, the second oil outlet is in closed condition, and the pressure oil of hydraulic piston cylinder rodless cavity is got back to hydraulic oil container through 3-position 4-way solenoid directional control valve;
When the second electromagnet of 3-position 4-way solenoid directional control valve obtains when electric, the parallel position work of 3-position 4-way solenoid directional control valve, the second oil outlet and return opening are in open mode, the first oil outlet is in closed condition, and the pressure oil of hydraulic piston cylinder rod chamber is got back to hydraulic oil container through 3-position 4-way solenoid directional control valve;
In this structure, the pressure oil that can initiatively discharge hydraulic piston cylinder rodless cavity and rod chamber by 3-position 4-way solenoid directional control valve is got back to hydraulic oil container, has protected hydraulic piston cylinder and hydraulic machinery equipment.
Compared with prior art, the utility model has the advantage of and comprise that the first shuttle valve and the second shuttle valve, described controller comprise the first two-position four-way solenoid directional control valve and the second two-position four-way solenoid directional control valve;
Hydraulic oil source is communicated with the filler opening of the first two-position four-way solenoid directional control valve and the filler opening of the second two-position four-way solenoid directional control valve respectively, and the return opening of the return opening of the first two-position four-way solenoid directional control valve and the second two-position four-way solenoid directional control valve is communicated with hydraulic oil container respectively;
The control chamber hydraulic fluid port of the first two-way plug-in valve is communicated with the oil outlet of the first shuttle valve, the first filler opening of the first shuttle valve is communicated with the first oil outlet of the first two-position four-way solenoid directional control valve, and the second filler opening of the first shuttle valve is communicated with the second oil outlet of the second two-position four-way solenoid directional control valve;
The control chamber hydraulic fluid port of the 4th two-way plug-in valve is communicated with the oil outlet of the second shuttle valve, the first filler opening of the second shuttle valve is communicated with the first oil outlet of the second two-position four-way solenoid directional control valve, and the second filler opening of the second shuttle valve is communicated with the second oil outlet of the second two-position four-way solenoid directional control valve;
When the first two-position four-way solenoid directional control valve is from parallel position to intersecting position motion, when the pressure oil that oil contamination particle has blocked the first two-position four-way electromagnetic switch valve core and blocked hydraulic oil source enters the runner of the first two-way plug-in valve control chamber, pressure oil can enter in the middle of the control chamber of the first two-way plug-in valve by the second two-position four-way solenoid directional control valve and the first shuttle valve;
When the second two-position four-way solenoid directional control valve is from parallel position to intersecting position motion, when the pressure oil that oil contamination particle has blocked the second two-position four-way electromagnetic switch valve core and blocked hydraulic oil source enters the runner of the 4th two-way plug-in valve control chamber, pressure oil can enter in the middle of the control chamber of the 4th two-way plug-in valve by the first two-position four-way solenoid directional control valve and the second shuttle valve;
By this structure, can realize the reliably locked of when one of them two-position four-way solenoid directional control valve breaks down oil hydraulic cylinder, ensure the safety of hydraulic machinery equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Embodiment: as shown in the figure, a high-volume hydraulic commutation loop with interlocking function, comprises hydraulic piston cylinder 1, hydraulic oil source 2, hydraulic oil container 3, controller 4, the first two-way plug-in valve 5, the second two-way plug-in valve 6, the 3rd two-way plug-in valve 7 and the 4th two-way plug-in valve 8;
The oil outlet of hydraulic oil source 2 is communicated with the first hydraulic fluid port C2 of the second two-way plug-in valve 6 and the first hydraulic fluid port C3 of the 3rd two-way plug-in valve 7 respectively, the second hydraulic fluid port D2 of the second two-way plug-in valve 6 is communicated with the second hydraulic fluid port D1 of the first two-way plug-in valve 5 and the rodless cavity 9 of hydraulic piston cylinder 1 respectively, the second hydraulic fluid port D3 of the 3rd two-way plug-in valve 7 is communicated with the second hydraulic fluid port D4 of the 4th two-way plug-in valve 8 and the rod chamber 10 of hydraulic piston cylinder 1 respectively, and the first hydraulic fluid port C1 of the first two-way plug-in valve 5 and the first hydraulic fluid port C4 of the 4th two-way plug-in valve 8 are communicated with hydraulic oil container 3 respectively;
Also comprise the first shuttle valve 11 and the second shuttle valve 12, controller 4 comprises the first two-position four-way solenoid directional control valve 13 and the second two-position four-way solenoid directional control valve 14;
Hydraulic oil source 2 is communicated with the oil inlet P 1 of the first two-position four-way solenoid directional control valve 13 and the oil inlet P 2 of the second two-position four-way solenoid directional control valve 14 respectively, and the oil return inlet T 1 of the first two-position four-way solenoid directional control valve 13 and the oil return inlet T 2 of the second two-position four-way solenoid directional control valve 14 are communicated with hydraulic oil container 3 respectively;
The control chamber hydraulic fluid port E1 of the first two-way plug-in valve 5 is communicated with the oil outlet H1 of the first shuttle valve 11, the first filler opening F1 of the first shuttle valve 11 is communicated with the first oil outlet A1 of the first two-position four-way solenoid directional control valve 13, and the second filler opening G1 of the first shuttle valve 11 is communicated with the second oil outlet B2 of the second two-position four-way solenoid directional control valve 14;
The control chamber hydraulic fluid port E2 of the 4th two-way plug-in valve 8 is communicated with the oil outlet H2 of the second shuttle valve 12, the first filler opening F2 of the second shuttle valve 12 is communicated with the first oil outlet A2 of the second two-position four-way solenoid directional control valve 14, and the filler opening G2 of the second shuttle valve 12 is communicated with the second oil outlet B1 of the first two-position four-way solenoid directional control valve 14.
In the present embodiment, also comprise security component, security component comprises the first direct-acting overflow valve 15 and the second direct-acting overflow valve 16;
The oil inlet P 4 of the first direct-acting overflow valve 15 is communicated with the rodless cavity 9 of hydraulic piston cylinder 1, the oil inlet P 5 of the second direct-acting overflow valve 16 is communicated with the rod chamber 10 of hydraulic piston cylinder 1, and the oil return inlet T 4 of the first direct-acting overflow valve 15 and the oil return inlet T 5 of the second direct-acting overflow valve 16 are communicated with hydraulic oil container 3 respectively;
In running order when hydraulic piston cylinder 1, the pressure of the pressure oil of rodless cavity 9 is during higher than the setting pressure of the first direct-acting overflow valve 15, and the pressure oil of rodless cavity 9 is got back to hydraulic oil container 3 through the first direct-acting overflow valve 15;
In running order when hydraulic piston cylinder 1, the pressure of the pressure oil of rod chamber 10 is during higher than the setting pressure of the second direct-acting overflow valve 16, and the pressure oil of rod chamber 10 is got back to hydraulic oil container 3 through the second direct-acting overflow valve 16;
Once the pressure on rodless cavity 9 and rod chamber 10 oil circuits, be greater than the setting safety pressure value of the first direct-acting overflow valve 15 or the second direct-acting overflow valve 16; this direct-acting overflow valve can be opened automatically; make pressure oil get back to hydraulic oil container 3, protected hydraulic piston cylinder 1 and hydraulic machinery equipment.
The setting pressure of the setting pressure of the first direct-acting overflow valve 15 and the second direct-acting overflow valve 16 is higher by 10% than the setting pressure of hydraulic oil source 1, the setting safety pressure value that is more than or equal to the first direct-acting overflow valve 15 or the second direct-acting overflow valve 16 once the pressure on rodless cavity 9 and rod chamber You10 road, this direct-acting overflow valve can be opened automatically.
Security component also comprises 3-position 4-way solenoid directional control valve 17, the first oil outlet A3 of 3-position 4-way solenoid directional control valve 17 is communicated with the rodless cavity 9 of hydraulic piston cylinder 1, the second oil outlet B3 of 3-position 4-way solenoid directional control valve 17 is communicated with the rod chamber 10 of hydraulic piston cylinder 1, and the oil return inlet T 3 of 3-position 4-way solenoid directional control valve 17 is communicated with hydraulic oil container 3;
3-position 4-way solenoid directional control valve 17 has for controlling the first electromagnet Y3 and the second electromagnet Y4 of the first oil outlet A3, the second oil outlet B3 and oil return inlet T 3;
When the first electromagnet Y3 of 3-position 4-way solenoid directional control valve 17 and the second electromagnet Y4 dead electricity, the 17 meta work of 3-position 4-way solenoid directional control valve, the first oil outlet A3, the second oil outlet B3 and oil return inlet T 3 are in closed condition;
When the first electromagnet Y3 of 3-position 4-way solenoid directional control valve 17 obtains when electric, the 17 intersection position work of 3-position 4-way solenoid directional control valve, the first oil outlet A3 and oil return inlet T 3 are in open mode, the second oil outlet B3 is in closed condition, and the pressure oil of hydraulic piston cylinder rodless cavity 9 is got back to hydraulic oil container 3 through 3-position 4-way solenoid directional control valve 17;
When the second electromagnet Y4 of 3-position 4-way solenoid directional control valve 17 obtains when electric, 3-position 4-way solenoid directional control valve 17 parallel position work, the second oil outlet B3 and oil return inlet T 3 are in open mode, the first oil outlet A3 is in closed condition, and the pressure oil of hydraulic piston cylinder rod chamber 10 is got back to hydraulic oil container 3 through 3-position 4-way solenoid directional control valve 17;
In this structure, the pressure oil that can initiatively discharge hydraulic piston cylinder rodless cavity and rod chamber by 3-position 4-way solenoid directional control valve is got back to hydraulic oil container, has protected hydraulic piston cylinder and hydraulic machinery equipment
When the above-mentioned large flow commutation loop with interlocking function is the second electromagnet Y2 dead electricity of the first electromagnet Y1 dead electricity when the first two-position four-way solenoid directional control valve 13, the second two-position four-way solenoid directional control valve 14, the first two-position four-way solenoid directional control valve 13, the parallel position work of the second two-position four-way solenoid directional control valve 14, the pressure oil of hydraulic oil source 1 enters the control chamber of four two-way plug-in valves through two electromagnetism solenoid directional control valves, the spool of four each two-way plug-in valves is closed controlling under oily effect;
When the first electromagnet Y1 of the first two-position four-way solenoid directional control valve 13 obtains the second electromagnet Y2 dead electricity of electric, the second two-position four-way solenoid directional control valve 14, the first two-position four-way solenoid directional control valve 13 intersection position work, the parallel position work of the second two-position four-way solenoid directional control valve 14, the pressure oil of hydraulic oil source 1 enters the control chamber of the first two-way plug-in valve 5, the 3rd two-way plug-in valve 7, hydraulic oil source 1 enters the rodless cavity 9 of hydraulic piston cylinder 1 through the second two-way plug-in valve 6, the pressure oil of rod chamber 10 is got back to hydraulic oil container 3 through the 4th two-way plug-in valve 8;
When the first electromagnet Y1 dead electricity of the first two-position four-way solenoid directional control valve 13, the second electromagnet Y2 of the second two-position four-way solenoid directional control valve 14 obtain when electric, the parallel position work of the first two-position four-way solenoid directional control valve 13, the second two-position four-way solenoid directional control valve 14 intersection position work, the pressure oil of hydraulic oil source 1 enters the control chamber of the second two-way plug-in valve 6, the 4th two-way plug-in valve 8, hydraulic oil source 1 enters the rod chamber 10 of hydraulic piston cylinder 1 through the 3rd two-way plug-in valve 7, the pressure oil of rodless cavity 9 is through the first two-way plug-in valve 5 oil sump tanks;
When the first two-position four-way solenoid directional control valve 13 is from parallel position to intersecting position motion, when the pressure oil that oil contamination particle has blocked the spool of the first two-position four-way solenoid directional control valve 13 and blocked hydraulic oil source 1 enters the runner of the first two-way plug-in valve 5 control chambers, pressure oil can enter in the middle of the control chamber of the first two-way plug-in valve 5 by the second two-position four-way solenoid directional control valve 14 and the first shuttle valve 11;
When the second two-position four-way solenoid directional control valve 14 is from parallel position to intersecting position motion, when the pressure oil that oil contamination particle has blocked the spool of the second two-position four-way solenoid directional control valve 14 and blocked hydraulic oil source 1 enters the runner of the 4th two-way plug-in valve 8 control chambers, pressure oil can enter in the middle of the control chamber of the 4th two-way plug-in valve 8 by the first two-position four-way solenoid directional control valve 13 and the second shuttle valve 12;
By this structure, can realize the reliably locked of when one of them two-position four-way solenoid directional control valve breaks down oil hydraulic cylinder, ensure the safety of hydraulic machinery equipment.
Claims (4)
1. a high-volume hydraulic commutation loop with interlocking function, comprises hydraulic piston cylinder, hydraulic oil source, hydraulic oil container, controller, the first two-way plug-in valve, the second two-way plug-in valve, the 3rd two-way plug-in valve and the 4th two-way plug-in valve;
The oil outlet of described hydraulic oil source is communicated with the first hydraulic fluid port of the first hydraulic fluid port of described the second two-way plug-in valve and described the 3rd two-way plug-in valve respectively, the second hydraulic fluid port of the second described two-way plug-in valve is communicated with the rodless cavity of the second hydraulic fluid port of described the first two-way plug-in valve and described hydraulic piston cylinder respectively, the second hydraulic fluid port of the 3rd described two-way plug-in valve is communicated with the rod chamber of the second hydraulic fluid port of described the 4th two-way plug-in valve and described hydraulic piston cylinder respectively, the first hydraulic fluid port of the 4th two-way plug-in valve described in the first hydraulic fluid port of the first described two-way plug-in valve is communicated with described hydraulic oil container respectively,
Characterized by further comprising the first shuttle valve and the second shuttle valve, described controller comprises the first two-position four-way solenoid directional control valve and the second two-position four-way solenoid directional control valve;
Described hydraulic oil source is communicated with the filler opening of the filler opening of described the first two-position four-way solenoid directional control valve and described the second two-position four-way solenoid directional control valve respectively, the return opening of the first described two-position four-way solenoid directional control valve is communicated with described hydraulic oil container, and the return opening of the second described two-position four-way solenoid directional control valve is communicated with described hydraulic oil container;
The control chamber hydraulic fluid port of the first described two-way plug-in valve is communicated with the oil outlet of the first described shuttle valve, the first filler opening of the first described shuttle valve is communicated with the first oil outlet of described the first two-position four-way solenoid directional control valve, and the second filler opening of the first described shuttle valve is communicated with the second oil outlet of described the second two-position four-way solenoid directional control valve;
The control chamber hydraulic fluid port of the 4th described two-way plug-in valve is communicated with the oil outlet of the second described shuttle valve, the first filler opening of the second described shuttle valve is communicated with the first oil outlet of described the second two-position four-way solenoid directional control valve, and the second filler opening of the second described shuttle valve is communicated with the second oil outlet of described the first two-position four-way solenoid directional control valve.
2. a kind of high-volume hydraulic commutation loop with interlocking function according to claim 1, characterized by further comprising security component, and described security component comprises the first direct-acting overflow valve and the second direct-acting overflow valve;
The described filler opening of the first direct-acting overflow valve and the rodless cavity of described hydraulic piston cylinder are communicated with, the described filler opening of the second direct-acting overflow valve and the rod chamber of described hydraulic piston cylinder are communicated with, and the return opening of the return opening of the first described direct-acting overflow valve and the second described direct-acting overflow valve is communicated with described hydraulic oil container respectively.
3. a kind of high-volume hydraulic commutation loop with interlocking function according to claim 2, is characterized in that the setting pressure of the first described direct-acting overflow valve and the setting pressure of described the second direct-acting overflow valve are higher by 10% than the setting pressure of described hydraulic oil source.
4. a kind of high-volume hydraulic commutation loop with interlocking function according to claim 2, it is characterized in that described security component also comprises 3-position 4-way solenoid directional control valve, the first oil outlet of described 3-position 4-way solenoid directional control valve is communicated with the rodless cavity of described hydraulic piston cylinder, the second oil outlet of described 3-position 4-way solenoid directional control valve is communicated with the rod chamber of described hydraulic piston cylinder, and the return opening of described 3-position 4-way solenoid directional control valve is communicated with described hydraulic oil container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420423719.1U CN203978967U (en) | 2014-07-30 | 2014-07-30 | A kind of high-volume hydraulic commutation loop with interlocking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420423719.1U CN203978967U (en) | 2014-07-30 | 2014-07-30 | A kind of high-volume hydraulic commutation loop with interlocking function |
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| CN203978967U true CN203978967U (en) | 2014-12-03 |
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| CN201420423719.1U Withdrawn - After Issue CN203978967U (en) | 2014-07-30 | 2014-07-30 | A kind of high-volume hydraulic commutation loop with interlocking function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154056A (en) * | 2014-07-30 | 2014-11-19 | 宁波恒力液压股份有限公司 | High-flow hydraulic reversing loop with interlocking function |
| CN107893784A (en) * | 2017-12-13 | 2018-04-10 | 安徽天水液压机床科技有限公司 | A kind of multi-cylinder linkage hydraulic system of hydraulic machine |
| CN109834966A (en) * | 2019-04-08 | 2019-06-04 | 江苏国力锻压机床有限公司 | The hydraulic fine machine of servo-pump control and its hydraulic processing method |
| CN113404732A (en) * | 2021-06-24 | 2021-09-17 | 三一汽车起重机械有限公司 | Lifting hydraulic system and working machine |
-
2014
- 2014-07-30 CN CN201420423719.1U patent/CN203978967U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154056A (en) * | 2014-07-30 | 2014-11-19 | 宁波恒力液压股份有限公司 | High-flow hydraulic reversing loop with interlocking function |
| CN104154056B (en) * | 2014-07-30 | 2016-05-04 | 宁波恒力液压股份有限公司 | A kind of high-volume hydraulic commutation loop with interlock function |
| CN107893784A (en) * | 2017-12-13 | 2018-04-10 | 安徽天水液压机床科技有限公司 | A kind of multi-cylinder linkage hydraulic system of hydraulic machine |
| CN107893784B (en) * | 2017-12-13 | 2023-12-05 | 安徽天水液压机床科技有限公司 | Hydraulic system of multi-cylinder linkage hydraulic machine |
| CN109834966A (en) * | 2019-04-08 | 2019-06-04 | 江苏国力锻压机床有限公司 | The hydraulic fine machine of servo-pump control and its hydraulic processing method |
| CN109834966B (en) * | 2019-04-08 | 2023-12-22 | 江苏扬力液压装备有限公司 | Servo pump control hydraulic fine blanking machine and hydraulic machining method thereof |
| CN113404732A (en) * | 2021-06-24 | 2021-09-17 | 三一汽车起重机械有限公司 | Lifting hydraulic system and working machine |
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