CN104214152A - Two-way cartridge type vibration control valve - Google Patents
Two-way cartridge type vibration control valve Download PDFInfo
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- CN104214152A CN104214152A CN201310204792.XA CN201310204792A CN104214152A CN 104214152 A CN104214152 A CN 104214152A CN 201310204792 A CN201310204792 A CN 201310204792A CN 104214152 A CN104214152 A CN 104214152A
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Abstract
The invention discloses a two-way cartridge type vibration control valve which comprises a valve body, a direction control branch loop, a vibration stop branch loop and a safe branch loop. The direction control branch loop is inserted in the valve body and formed by four two-way cartridge valves and the like. The hydraulic impact of a road roller in the vibration starting process is reduced, the peak pressure of a hydraulic system is lowered, the work reliability and durability of a hydraulic element are improved, the vibration stop time is shortened, and the operation quality of the road roller and the comfort feeling of a driver are improved. Compared with the prior art, a two-way cartridge valve and a control cover plate component of the two-way cartridge valve are omitted, the size is reduced, and the hydraulic system is simpler, more convenient to maintain and lower in production cost. Meanwhile, in the two-way cartridge type vibration control valve, an adjusting flow valve is arranged between the branch oil path position, communicated with the first two-way cartridge valve and the fourth two-way cartridge valve, of an oil inlet connector and an oil return connector, and the vibration frequency of the road roller can be adjusted when needed.
Description
Technical field
The present invention relates to a kind of two-way plug-in vibration control valve, specifically, relate to the two-way plug-in vibration control valve of the control oil hydraulic motor work on a kind of vibratory roller.
Background technique
The shake unit of current domestic single vibratory road roller adopt taking metering pump (being gear pump mostly) as the open hydraulic transmission of power source and the application of control system commonplace.Vibratory roller is in the time of starting of oscillation, its vibrating hydraulic motor starts for band carries, cause in the road roller starting of oscillation stage hydraulic system is formed to impacting with high pressure, components such as pump, valve, motor and pipelines in hydraulic system is brought the bad sound that draws by this instantaneous high pressure, cause the damage of hydraulic pressure component and pipeline to connect loosening and reveal, befouling environment, analyze according to statistics, the fault in road roller vibratory hydraulic system more than 60% is because starting of oscillation high pressure causes; When failure of oscillation, cause complete machine resonance because the rotator inertia of road roller exciting rotor can make failure of oscillation overlong time, will affect the operation quality of road roller and operator's work travelling comfort.
Chinese patent literature CN202811584U discloses a kind of two-way plug-in vibration control valve, comprises valve body, major loop, failure of oscillation point loop and unloaded oil return point loop, reduce preferably the hydraulic shock that road roller makes in starting of oscillation and shortened the failure of oscillation time, but the existing deficiency of two-way plug-in type vibrating valve described in above-mentioned patent documentation is: in this two-way plug-in vibration control valve, a described unloaded oil return point loop comprises the 5th two-way plug-in valve, and be arranged on described the 5th two-way plug-in valve control mouth place, control described the 5th two-way plug-in valve in treating the 3rd shuttle valve of opening state or closed condition, in this two-way plug-in vibration control valve, a two-way plug-in valve and shuttle valve need to be set specially and carry out unloaded oil return, thereby cause in this two-way plug-in vibration control valve component more, modular construction and hydraulic system complexity.
Summary of the invention
For this reason, technical problem to be solved by this invention is that two-way plug-in vibration control valve component of the prior art are more, modular construction and hydraulic system complexity, and then provide a kind of component less, and the simpler two-way plug-in vibration control valve of system.
For solving the problems of the technologies described above, a kind of two-way plug-in vibration control valve of the present invention, comprising:
Valve body, on described valve body, form plug-in mounting chamber, the oil-feed interface being communicated with the oil outlet of oil hydraulic pump, the oil return interface being communicated with the fuel tank of hydraulic system, and the first working interface and the second working interface that are communicated with the first hydraulic fluid port and second hydraulic fluid port at oil hydraulic motor two ends respectively;
Major loop, described major loop is inserted in the described plug-in mounting chamber of described valve body, comprises by four two-way plug-in valves, and guide's direction control circuit that 3-position 4-way solenoid directional control valve forms, wherein
The first two-way plug-in valve is arranged between described oil-feed interface and described the first working interface, and control the feed flow of described oil-feed interface toward described the first working interface, the 3rd two-way plug-in valve is arranged between described the second working interface and described oil return interface, and control described the second working interface towards the liquid that returns between described oil return interface, when described the first two-way plug-in valve and described the 3rd two-way plug-in valve are together opened, form good point of loop; The 4th two-way plug-in valve is arranged between described oil-feed interface and the second working interface, and control the feed flow of described oil-feed interface toward described the second working interface, the second two-way plug-in valve is arranged between described the first working interface and described oil return interface, and control described the first working interface towards the liquid that returns between described oil return interface, when described the 4th two-way plug-in valve and described the second two-way plug-in valve are together opened, form the little point loop that shakes;
Failure of oscillation divides loop, and a described failure of oscillation point loop is provided with two covers, the good failure of oscillation of a set of control, the little failure of oscillation that shakes of a set of control;
Unloaded oil return divides loop, when a described unloaded oil return point loop is realized engine idle or road roller and is not vibrated, and the unloaded oil return of oil hydraulic pump;
Between the oil circuit place of branch being communicated with to described the first two-way plug-in valve, described the 4th two-way plug-in valve by described oil-feed interface and described oil return interface, be provided with adjustable restrictive valve;
A good failure of oscillation point loop comprises and is arranged on described the 3rd two-way plug-in valve control mouth place, control the second two-position two-way hydraulic control directional control valve (3-3) of described the 3rd two-way plug-in valve in opening state or closed condition, and be arranged between the control mouth and described oil return interface of described the 3rd two-way plug-in valve, set up the second relief valve of hydraulic coupling in little shake point loop or good failure of oscillation point loop, the control mouth place that is arranged on described the 4th two-way plug-in valve controls second shuttle valve of described the 4th two-way plug-in valve in opening state or closed condition, the inlet (outlet) of wherein said the second two-position two-way hydraulic control directional control valve communicates with the first actuator port of described 3-position 4-way solenoid directional control valve, (entering) hydraulic fluid port that goes out of described the second two-position two-way hydraulic control directional control valve communicates with the control mouth of described the 3rd two-way plug-in valve by the 3rd fixing damping, the control mouth of described the second two-position two-way hydraulic control directional control valve communicates with the control mouth of described the 3rd two-way plug-in valve, the drain tap of described the second two-position two-way hydraulic control directional control valve communicates with the control mouth of described the second two-way plug-in valve, the middle hydraulic fluid port of described the second shuttle valve communicates with the control mouth of described the 4th two-way plug-in valve by the 4th fixing damping, the two ends hydraulic fluid port of described the second shuttle valve is communicated with described the second actuator port and described second working interface of described 3-position 4-way solenoid directional control valve respectively,
The little failure of oscillation point loop that shakes comprises and is arranged on described the second two-way plug-in valve control mouth place, control the first two-position two-way hydraulic control directional control valve of described the second two-way plug-in valve in opening state or closed condition, be arranged between the control mouth and oil return interface of described the second two-way plug-in valve, set up the first relief valve of hydraulic coupling in good point of loop or the little failure of oscillation point loop that shakes, and the control mouth place that is arranged on described the first two-way plug-in valve controls first shuttle valve of described the first two-way plug-in valve in opening state or closed condition, the inlet (outlet) of wherein said the first two-position two-way hydraulic control directional control valve communicates with the second actuator port of described 3-position 4-way solenoid directional control valve, (entering) hydraulic fluid port that goes out of described the first two-position two-way hydraulic control directional control valve communicates with the control mouth of described the second two-way plug-in valve by the second fixing damping, the control mouth of described the first two-position two-way hydraulic control directional control valve communicates with the control mouth of the second two-way plug-in valve, the drain tap of described the first two-position two-way hydraulic control directional control valve communicates with the control mouth of described the 3rd two-way plug-in valve, the middle hydraulic fluid port of described the first shuttle valve is communicated with by the control mouth of the first fixing damping and described the first two-way plug-in valve, the two ends hydraulic fluid port of described the first shuttle valve is communicated with described the first actuator port and described first working interface of described 3-position 4-way solenoid directional control valve respectively,
Described 3-position 4-way solenoid directional control valve the first electromagnet obtains electric, the control mouth of described the second two-way plug-in valve is closed under the set pressure of described the first relief valve, the control mouth feed liquor of described the 4th two-way plug-in valve and closing, described the first two-way plug-in valve and described the 3rd two-way plug-in valve control mouth return liquid and open, and realize good;
Described 3-position 4-way solenoid directional control valve the first electromagnet dead electricity, the pressure reduction that the described the 3rd fixing damping produces promotes described the second two-position two-way hydraulic control directional control valve commutation, the control mouth of described the 3rd two-way plug-in valve is closed because described the second two-position two-way hydraulic control directional control valve commutates, the liquid flowing out from described second working interface of described oil hydraulic motor is by described the second shuttle valve, thereby the control end feed liquor toward described the 4th two-way plug-in valve is closed described the 4th two-way plug-in valve, the liquid flowing out from described the second working interface forms return oil pressure under the set pressure of described the second relief valve forces the stall of oil hydraulic motor forward, realize good failure of oscillation,
Described 3-position 4-way solenoid directional control valve the second electromagnet obtains electric, the control mouth feed liquor of described the first two-way plug-in valve and closing, described the 3rd two-way plug-in valve control mouth is closed under the set pressure of described the second relief valve, the control mouth of described the second two-way plug-in valve and described the 4th two-way plug-in valve returns liquid respectively and opens, and realizes little shaking;
Described 3-position 4-way solenoid directional control valve the second electromagnet dead electricity, the pressure reduction that the described second fixing damping produces promotes the first two-position two-way hydraulic control directional control valve commutation, the control mouth of described the second two-way plug-in valve is closed because described the first two-position two-way hydraulic control directional control valve commutates, the liquid flowing out from described first working interface of described oil hydraulic motor is by described the first shuttle valve, thereby the control mouth feed liquor toward described the first two-way plug-in valve is closed described the first two-way plug-in valve, the liquid flowing out from described first working interface of described oil hydraulic motor forms return oil pressure under the set pressure of described the first relief valve, force oil hydraulic motor reversion stall, realize the little failure of oscillation that shakes,
In the time that two electromagnet of described 3-position 4-way solenoid directional control valve all must not electricity, the control mouth of four described two-way plug-in valves all returns liquid and all opens, when realizing engine idle or road roller and not vibrating, and the unloaded oil return of oil hydraulic pump.
The liquid entering hole of described 3-position 4-way solenoid directional control valve is provided with the 5th fixing damping.
Described the second two-way plug-in valve and described the 3rd two-way plug-in valve are the two-way plug-in valve that spool is provided with fixing damping hole.
The oil return interface of described valve body, described the first working interface, and the working connection hole of the second working interface is all shaped to long waist-shaped hole, described long waist-shaped hole is by two Line Segment, and the two halves circular arc that is arranged on described two Line Segment two ends surrounds, wherein, the diameter of described semi-circle equals the latus rectum of described two-way plug-in valve, the diameter that the length of described Line Segment adds the above semi-circle is not more than described oil return interface, described the first working interface, and described the second working interface hydraulic fluid port screw thread path separately.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) in the present invention, adopt direction control point loop, the failure of oscillation of the compositions such as four two-way plug-in valves to divide loop and safety point loop, alleviate the hydraulic shock of road roller in the time of starting of oscillation, reduce the surge pressure of hydraulic system, reliability and the durability of hydraulic element work are improved, shorten the failure of oscillation time, improved the operation quality of road roller and driver's comfortable feel; The present invention compared with prior art, has saved a set of two-way plug-in valve and has controlled cover plate assembly, has dwindled volume, makes hydraulic system of the present invention more simple, safeguards, maintains more convenient, and cost of production is lower.
(2) in the present invention, be provided with adjustable restrictive valve, while needs, can regulate the vibration frequency of road roller.
(3) in the present invention, working connection hole shape design growth waist-shaped hole corresponding to each working connection interface on valve body, the logical pasta that can increase each working connection is long-pending, improves oil filling capacity, has reduced the pressure loss simultaneously.
Brief description of the drawings
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the system schematic of two-way plug-in vibration control valve of the present invention;
Fig. 2 is the plan view of two-way plug-in vibration control valve of the present invention;
Fig. 3 is the plan view of two-way plug-in vibration control valve of the present invention;
In figure, reference character is expressed as: the 1-the first two-way plug-in valve; 1-1-the first fixed damping; 1-2-the first shuttle valve; The 2-the second two-way plug-in valve; 2-1-the second fixed damping; 2-2-the first relief valve; 2-3-the first two-position two-way hydraulic control directional control valve; The 3-the three two-way plug-in valve; 3-1-three fixes damping; 3-2-the second relief valve; 3-3-second two-way hydraulic control directional control valve; The 4-the four two-way plug-in valve; 4-1-four fixes damping; 4-2-the second shuttle valve; 5-3-position 4-way solenoid directional control valve; A-3-position 4-way solenoid directional control valve the first actuator port; B-3-position 4-way solenoid directional control valve the second actuator port; 1DT-3-position 4-way solenoid directional control valve the first electromagnet; 2DT-3-position 4-way solenoid directional control valve the second electromagnet; 6-adjustable restrictive valve; The 7-the five fixing damping; P-oil-feed interface; T-oil return interface; A-the first working interface; B-the second working interface.
Embodiment
Below with reference to accompanying drawing, use following examples to be further elaborated the present invention.
As Figure 1-3, a kind of two-way plug-in vibration control valve of the present embodiment, comprising:
Valve body, on described valve body, form plug-in mounting chamber, the oil-feed interface P being communicated with the oil outlet of oil hydraulic pump, the oil return interface T being communicated with the fuel tank of hydraulic system, and the first working interface A and the second working interface B that are communicated with the first hydraulic fluid port and second hydraulic fluid port at oil hydraulic motor two ends respectively;
Major loop, described major loop is inserted in the described plug-in mounting chamber of described valve body, comprises by four two-way plug-in valves, and guide's direction control circuit that 3-position 4-way solenoid directional control valve forms, wherein
The first two-way plug-in valve 1 is arranged between described oil-feed interface P and described the first working interface A, and control the feed flow of described oil-feed interface P toward described the first working interface A, the 3rd two-way plug-in valve 3 is arranged between described the second working interface B and described oil return interface T, and control described the second working interface B towards the liquid that returns between described oil return interface T, when described the first two-way plug-in valve 1 is together opened with described the 3rd two-way plug-in valve 3, form good point of loop; The 4th two-way plug-in valve 4 is arranged between described oil-feed interface P and the second working interface B, and control the feed flow of described oil-feed interface P toward described the second working interface B, the second two-way plug-in valve 2 is arranged between described the first working interface A and described oil return interface T, and control described the first working interface A towards the liquid that returns between described oil return interface T, when described the 4th two-way plug-in valve 4 is together opened with described the second two-way plug-in valve 2, form the little point loop that shakes;
Failure of oscillation divides loop, and a described failure of oscillation point loop is provided with two covers, the good failure of oscillation of a set of control, the little failure of oscillation that shakes of a set of control;
Unloaded oil return divides loop, when a described unloaded oil return point loop is realized engine idle or road roller and is not vibrated, and the unloaded oil return of oil hydraulic pump;
Between the oil circuit place of branch being communicated with to described the first two-way plug-in valve 1, described the 4th two-way plug-in valve 4 by described oil-feed interface P and described oil return interface T, be provided with adjustable restrictive valve 6;
A good failure of oscillation point loop comprises that being arranged on described the 3rd two-way plug-in valve 3 controls a mouthful place, control the second two-position two-way hydraulic control directional control valve 3-3 of described the 3rd two-way plug-in valve 3 in opening state or closed condition, and be arranged between the control mouth and described oil return interface T of described the 3rd two-way plug-in valve 3, set up the second relief valve 3-2 of hydraulic coupling in little shake point loop or good failure of oscillation point loop, the control mouth place that is arranged on described the 4th two-way plug-in valve 4 controls the second shuttle valve 4-2 of described the 4th two-way plug-in valve 4 in opening state or closed condition, the inlet (outlet) of wherein said the second two-position two-way hydraulic control directional control valve 3-3 communicates with described 3-position 4-way solenoid directional control valve the first actuator port a, (entering) hydraulic fluid port that goes out of described the second two-position two-way hydraulic control directional control valve 3-3 communicates with the control mouth of described the 3rd two-way plug-in valve 3 by the 3rd fixing damping 3-1, the control mouth of described the second two-position two-way hydraulic control directional control valve 3-3 communicates with the control mouth of described the 3rd two-way plug-in valve 3, the drain tap of described the second two-position two-way hydraulic control directional control valve 3-3 communicates with the control mouth of described the second two-way plug-in valve 2, the middle hydraulic fluid port of described the second shuttle valve 4-2 communicates with the control mouth of described the 4th two-way plug-in valve 4 by the 4th fixing damping 4-1, the two ends hydraulic fluid port of described the second shuttle valve 4-2 is communicated with described 3-position 4-way solenoid directional control valve the second actuator port b and described the second working interface B respectively,
The little failure of oscillation point loop that shakes comprises that being arranged on described the second two-way plug-in valve 2 controls a mouthful place, control the first two-position two-way hydraulic control directional control valve 2-3 of described the second two-way plug-in valve 2 in opening state or closed condition, be arranged between the control mouth and described oil return interface T of described the second two-way plug-in valve 2, set up the first relief valve 2-2 of hydraulic coupling in good point of loop or the little failure of oscillation point loop that shakes, and the control mouth place that is arranged on described the first two-way plug-in valve 1 controls the first shuttle valve 1-2 of described the first two-way plug-in valve 1 in opening state or closed condition, the inlet (outlet) of wherein said the first two-position two-way hydraulic control directional control valve 2-3 communicates with described 3-position 4-way solenoid directional control valve the second actuator port b, (entering) hydraulic fluid port that goes out of described the first two-position two-way hydraulic control directional control valve 2-3 communicates with the control mouth of described the second two-way plug-in valve 2 by the second fixing damping 2-1, the control mouth of described the first two-position two-way hydraulic control directional control valve 2-3 communicates with the control mouth of the second two-way plug-in valve 2, the drain tap of described the first two-position two-way hydraulic control directional control valve 2-3 communicates with the control mouth of described the 3rd two-way plug-in valve 3, the middle hydraulic fluid port of described the first shuttle valve 1-2 is communicated with by the control mouth of the first fixing damping 1-1 and described the first two-way plug-in valve 1, the two ends hydraulic fluid port of described the first shuttle valve 1-2 is communicated with described 3-position 4-way solenoid directional control valve the first actuator port a and described the first working interface A respectively,
Described 3-position 4-way solenoid directional control valve the first electromagnet 1DT obtains electric, the control mouth of described the second two-way plug-in valve 2 is closed under the set pressure of described the first relief valve 2-2, the control mouth feed liquor of described the 4th two-way plug-in valve 4 and closing, described the first two-way plug-in valve 1 and described the 3rd two-way plug-in valve 3 are controlled mouthful time liquid and open, and realize good;
Described 3-position 4-way solenoid directional control valve the first electromagnet 1DT dead electricity, the pressure reduction that the described the 3rd fixing damping 3-1 produces promotes described the second two-position two-way hydraulic control directional control valve 3-3 commutation, the control mouth of described the 3rd two-way plug-in valve 3 is closed because described the second two-position two-way hydraulic control directional control valve 3-3 commutates, the liquid flowing out from the described second working interface B of described oil hydraulic motor is by described the second shuttle valve 4-2, thereby the control end feed liquor toward described the 4th two-way plug-in valve 4 is closed described the 4th two-way plug-in valve 4, the liquid flowing out from described the second working interface B forms return oil pressure under the set pressure of described the second relief valve 3-2 forces the stall of oil hydraulic motor forward, realize good failure of oscillation,
Described 3-position 4-way solenoid directional control valve the second electromagnet 2DT obtains electric, the control mouth feed liquor of described the first two-way plug-in valve 1 and closing, described the 3rd two-way plug-in valve 3 is controlled mouth and is closed under the set pressure of described the second relief valve 3-2, the control mouth of described the second two-way plug-in valve 2 and described the 4th two-way plug-in valve 4 returns liquid respectively and opens, and realizes little shaking;
Described 3-position 4-way solenoid directional control valve the second electromagnet 2DT dead electricity, the pressure reduction that the described second fixing damping 2-1 produces promotes the first two-position two-way hydraulic control directional control valve 2-3 commutation, the control mouth of described the second two-way plug-in valve 2 is closed because described the first two-position two-way hydraulic control directional control valve 2-3 commutates, the liquid flowing out from the described first working interface A of described oil hydraulic motor is by described the first shuttle valve 1-2, thereby the control mouth feed liquor toward described the first two-way plug-in valve 1 is closed described the first two-way plug-in valve 1, the liquid flowing out from the described first working interface A of described oil hydraulic motor forms return oil pressure under the set pressure of described the first relief valve 2-2, force oil hydraulic motor reversion stall, realize the little failure of oscillation that shakes,
In the time that two electromagnet of described 3-position 4-way solenoid directional control valve 5 all must not electricity, the control mouth of four described two-way plug-in valves all returns liquid and all opens, when realizing engine idle or road roller and not vibrating, and the unloaded oil return of oil hydraulic pump.In the present embodiment, adopt direction control point loop, the failure of oscillation of the compositions such as four two-way plug-in valves to divide loop and safety point loop, alleviate the hydraulic shock of road roller in the time of starting of oscillation, reduce the surge pressure of hydraulic system, reliability and the durability of hydraulic element work are improved, shorten the failure of oscillation time, improved the operation quality of road roller and driver's comfortable feel; The present invention compared with prior art, has saved a set of two-way plug-in valve and has controlled cover plate assembly, has dwindled volume, makes hydraulic system of the present invention more simple, safeguards, maintains more convenient, and cost of production is lower; Further, in the present embodiment, between the oil circuit place of branch being communicated with to described the first two-way plug-in valve 1, described the 4th two-way plug-in valve 4 by described oil-feed interface P and described oil return interface T, be also provided with adjustable restrictive valve 6, while needs, can regulate the vibration frequency of road roller.
On the basis of above-described embodiment, in the present embodiment, the liquid entering hole of described 3-position 4-way solenoid directional control valve 5 is provided with the described the 5th fixing damping 7.
Described the second two-way plug-in valve 2 and described the 3rd two-way plug-in valve 3 are the two-way plug-in valve that spool is provided with fixing damping hole.
Further, on the basis of above-described embodiment, in this enforcement, the described oil return interface T of described valve body, described the first working interface A, and the working connection hole of the second working interface B is all shaped to long waist-shaped hole, described long waist-shaped hole is by two Line Segment, and the two halves circular arc that is arranged on described two Line Segment two ends surrounds, wherein, the diameter of described semi-circle equals the latus rectum of described two-way plug-in valve, the diameter that the length of described Line Segment adds the above semi-circle is not more than described oil return interface T, described the first working interface A, and described the second working interface B hydraulic fluid port screw thread path separately, the design of described long waist-shaped hole, the logical pasta that can increase each working connection is long-pending, improves oil filling capacity, has reduced the pressure loss simultaneously.
The working procedure of two-way plug-in vibration control valve of the present invention is as follows:
(1) when engine idle and road roller do not vibrate
The first electromagnet 1DT described in described 3-position 4-way solenoid directional control valve, described the second electromagnet 2DT all must not electricity (being that described 3-position 4-way solenoid directional control valve 1 is in the time of meta), the control mouth of four described two-way plug-in valves all returns liquid and all opens, cause oil hydraulic pump to carry out oil content not from described the first two-way plug-in valve 1, the import of described the 4th two-way plug-in valve 4 enters and its spool of jack-up, enter respectively again described the second two-way plug-in valve 2 through its outlet, its spool of the import of described the 3rd two-way plug-in valve 3 jack-up, communicate with the back oil road of described valve body through its outlet again, flow back to hydraulic reservoir through described oil return interface T, when realizing engine idle or road roller and not vibrating, the unloaded oil return of oil hydraulic pump.
(2) oil hydraulic motor forward (being good starting of oscillation and good operating mode work with respect to road roller)
Described in described 3-position 4-way solenoid directional control valve, the first electromagnet obtains electric 1DT(spool and moves to right), now the right-hand member filler opening of the oil inlet and outlet of described the first two-position two-way hydraulic control directional control valve 2-3 and described the second shuttle valve 4-2 all communicates with oil input channel, and cause the oil entering from described oil-feed interface P, flow to respectively described the second two-way plug-in valve control 2 donsoles and described the 4th two-way plug-in valve 4 controls mouthful, described the second two-way plug-in valve 2 and described the 4th two-way plug-in valve 4 are all closed because controlling a mouthful feed liquor, and the while control mouth of described the first two-way plug-in valve 1 and the control mouth of described the 3rd two-way plug-in valve 3 communicate with drainback passage and cause control mouth separately to return liquid decompression, now described the first two-way plug-in valve 1 and described the 3rd two-way plug-in valve 3 are all in treating opening state, and described the second two-way plug-in valve 2 and described the 4th two-way plug-in valve 4 are all in closed condition, now oil hydraulic pump is next oily enters and its spool of jack-up from described the first two-way plug-in valve 1 import, the first work oil duct and described the first working interface A that enters valve body through its outlet enters the first hydraulic fluid port of oil hydraulic motor, start described oil hydraulic motor forward (being good starting of oscillation and good work with respect to road roller), the oil extraction of described oil hydraulic motor enters the described second working interface B of valve body through described oil hydraulic motor the second hydraulic fluid port, and along the second service aisle, enter and its spool of jack-up from the import of described the 3rd two-way plug-in valve 3, enter the back oil road of described valve body through its outlet, flow back to hydraulic reservoir through described oil return interface T.If in described oil hydraulic motor forward process (being the good process of road roller), there is overload in hydraulic system, by described the first relief valve 2-2 set pressure off-load.
(3) oil hydraulic motor forward stall (being equivalent to road roller is good failure of oscillation)
The described first electromagnet dead electricity (its spool is got back to meta) of described 3-position 4-way solenoid directional control valve, now through described the first two-position two-way hydraulic control selector valve 2-3 oil return, form pressure reduction at the described the 3rd fixing damping 3-1 place, the pressure reduction that the described the 3rd fixing damping 3-1 produces, make the control mouth feed liquor of described the second two-position two-way hydraulic control directional control valve 3-3, promoting its spool moves to left, described the 3rd two-way plug-in valve is closed because its control end is truncated, the oil flowing out from described the second working interface B is by described the second shuttle valve 4-2, toward the control mouth feed liquor of described the 4th two-way plug-in valve 4, described the 4th two-way plug-in valve 4 is closed, the liquid flowing out from described the second working interface B forms return oil pressure under the set pressure of described the second relief valve 3-2, the return oil pressure forming forces the stall of described oil hydraulic motor forward.
(4) oil hydraulic motor reversion (being equivalent to road roller is little shake starting of oscillation and the little operating mode work of shaking)
Described in described 3-position 4-way solenoid directional control valve, the second electromagnet obtains its spool of electric 2DT(and moves to left), now the oil inlet and outlet of the left end filler opening of described the first shuttle valve 1-2 and described the second two-position two-way hydraulic control directional control valve 3-3 all communicates with described oil input channel, and cause the oil content entering from described oil-feed interface P not flow to described the first two-way plug-in valve 1 control mouth and described the 3rd two-way plug-in valve 3 controls mouthful, described the first two-way plug-in valve 1 and described the 3rd two-way plug-in valve 3 are all closed because controlling a mouth feed liquor, and the while control mouth of described the 4th two-way plug-in valve 4 and the control mouth of described the second two-way plug-in valve 2 communicate with drainback passage and cause control mouth separately to return liquid decompression, now described the 4th two-way plug-in valve 4 and described the second two-way plug-in valve 2 all in opening state, now, described oil hydraulic pump is next oily to be entered and its spool of jack-up from described the 4th two-way plug-in valve 4 imports, the second work oil duct and described the second working interface B that enters described valve body through its outlet enters the second hydraulic fluid port of described oil hydraulic motor, start described oil hydraulic motor reversion (being equivalent to road roller is little shake starting of oscillation and the little work of shaking), the oil extraction of described oil hydraulic motor enters the described first working interface A of described valve body through described oil hydraulic motor the first hydraulic fluid port, and along described the first work oil duct, enter and its spool of jack-up from the import of described the second two-way plug-in valve 2, enter the back oil road of described valve body through its outlet, flow back to hydraulic reservoir through described oil return interface T.If in described oil hydraulic motor Umklapp process (being the little process of shaking of road roller), there is overload in hydraulic system, by described the second relief valve 3-3 set pressure off-load.
(5) oil hydraulic motor reversion stall (being equivalent to road roller is that little shaking stopped)
The described second electromagnet dead electricity (its spool is got back to meta) of described 3-position 4-way solenoid directional control valve, now through described the second two-position two-way hydraulic control directional control valve 3-3 oil return, form pressure reduction at the described second fixing damping 2-1 place, the pressure reduction that the described second fixing damping 2-1 produces, make the control mouth feed liquor of described the first two-position two-way hydraulic control directional control valve 2-3, promoting its spool moves to right, described the second two-way plug-in valve 2 is closed because its control end is truncated, the oil flowing out from described the first working interface A is by described the first shuttle valve 1-2, thereby the control mouth feed liquor toward described the first two-way plug-in valve 1 is closed described the first two-way plug-in valve 1, the oil flowing out from described the first working interface A forms return oil pressure under the set pressure of described the first relief valve 2-2, the return oil pressure forming forces described oil hydraulic motor reversion stall.
(6) oil hydraulic motor forward commutation is reversion (be equivalent to road roller good change little shaking)
The commutation of oil hydraulic motor forward is reversion, must be after forward stall, could commutate as reversion.
(7) oil hydraulic motor inverse transform to for forward (be equivalent to road roller little shake change good)
Oil hydraulic motor inverse transform, to being forward, must, after reversion stall, could commutate as forward.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all mode of executions.And the apparent variation of being extended out thus or variation are still among the protection domain in the invention.
Claims (4)
1. a two-way plug-in vibration control valve, comprising:
Valve body, on described valve body, form plug-in mounting chamber, the oil-feed interface (P) being communicated with the oil outlet of oil hydraulic pump, the oil return interface (T) being communicated with the fuel tank of hydraulic system, and the first working interface (A) and the second working interface (B) that are communicated with the first hydraulic fluid port and second hydraulic fluid port at oil hydraulic motor two ends respectively;
Major loop, described major loop is inserted in the described plug-in mounting chamber of described valve body, comprises by four two-way plug-in valves, and guide's direction control circuit that 3-position 4-way solenoid directional control valve forms, wherein
The first two-way plug-in valve (1) is arranged between described oil-feed interface (P) and described the first working interface (A), and control the feed flow of described oil-feed interface (P) toward described the first working interface (A), the 3rd two-way plug-in valve (3) is arranged between described the second working interface (B) and described oil return interface (T), and control described the second working interface (B) towards the liquid that returns between described oil return interface (T), when described the first two-way plug-in valve (1) is together opened with described the 3rd two-way plug-in valve (3), form good point of loop, the 4th two-way plug-in valve (4) is arranged between described oil-feed interface (P) and the second working interface (B), and control the feed flow of described oil-feed interface (P) toward described the second working interface (B), the second two-way plug-in valve (2) is arranged between described the first working interface (A) and described oil return interface (T), and control described the first working interface (A) towards the liquid that returns between described oil return interface (T), when described the 4th two-way plug-in valve (4) is together opened with described the second two-way plug-in valve (2), form the little point loop that shakes,
Failure of oscillation divides loop, and a described failure of oscillation point loop is provided with two covers, the good failure of oscillation of a set of control, the little failure of oscillation that shakes of a set of control;
Unloaded oil return divides loop, when a described unloaded oil return point loop is realized engine idle or road roller and is not vibrated, and the unloaded oil return of oil hydraulic pump;
It is characterized in that:
Between the oil circuit place of branch being communicated with to described the first two-way plug-in valve (1), described the 4th two-way plug-in valve (4) by described oil-feed interface (P) and described oil return interface (T), be provided with adjustable restrictive valve (6);
A good failure of oscillation point loop comprises that being arranged on described the 3rd two-way plug-in valve (3) controls a mouthful place, control the second two-position two-way hydraulic control directional control valve (3-3) of described the 3rd two-way plug-in valve (3) in opening state or closed condition, and be arranged between the control mouth and described oil return interface (T) of described the 3rd two-way plug-in valve (3), set up second relief valve (3-2) of hydraulic coupling in little shake point loop or good failure of oscillation point loop, the control mouth place that is arranged on described the 4th two-way plug-in valve (4) controls second shuttle valve (4-2) of described the 4th two-way plug-in valve (4) in opening state or closed condition, the inlet (outlet) of wherein said the second two-position two-way hydraulic control directional control valve (3-3) communicates with described 3-position 4-way solenoid directional control valve the first actuator port (a), (entering) hydraulic fluid port that goes out of described the second two-position two-way hydraulic control directional control valve (3-3) communicates with the control mouth of described the 3rd two-way plug-in valve (3) by the 3rd fixing damping (3-1), the control mouth of described the second two-position two-way hydraulic control directional control valve (3-3) communicates with the control mouth of described the 3rd two-way plug-in valve (3), the drain tap of described the second two-position two-way hydraulic control directional control valve (3-3) communicates with the control mouth of described the second two-way plug-in valve (2), the middle hydraulic fluid port of described the second shuttle valve (4-2) communicates with the control mouth of described the 4th two-way plug-in valve (4) by the 4th fixing damping (4-1), the two ends hydraulic fluid port of described the second shuttle valve (4-2) is communicated with described 3-position 4-way solenoid directional control valve the second actuator port (b) and described the second working interface (B) respectively,
The little failure of oscillation point loop that shakes comprises that being arranged on described the second two-way plug-in valve (2) controls a mouthful place, control the first two-position two-way hydraulic control directional control valve (2-3) of described the second two-way plug-in valve (2) in opening state or closed condition, be arranged between the control mouth and described oil return interface (T) of described the second two-way plug-in valve (2), set up first relief valve (2-2) of hydraulic coupling in good point of loop or the little failure of oscillation point loop that shakes, and the control mouth place that is arranged on described the first two-way plug-in valve (1) controls first shuttle valve (1-2) of described the first two-way plug-in valve (1) in opening state or closed condition, the inlet (outlet) of wherein said the first two-position two-way hydraulic control directional control valve (2-3) communicates with described 3-position 4-way solenoid directional control valve the second actuator port (b), (entering) hydraulic fluid port that goes out of described the first two-position two-way hydraulic control directional control valve (2-3) communicates with the control mouth of described the second two-way plug-in valve (2) by the second fixing damping (2-1), the control mouth of described the first two-position two-way hydraulic control directional control valve (2-3) communicates with the control mouth of the second two-way plug-in valve (2), the drain tap of described the first two-position two-way hydraulic control directional control valve (2-3) communicates with the control mouth of described the 3rd two-way plug-in valve (3), the middle hydraulic fluid port of described the first shuttle valve (1-2) is communicated with by the control mouth of the first fixing damping (1-1) and described the first two-way plug-in valve (1), the two ends hydraulic fluid port of described the first shuttle valve (1-2) is communicated with described 3-position 4-way solenoid directional control valve the first actuator port (a) and described the first working interface (A) respectively,
Described 3-position 4-way solenoid directional control valve the first electromagnet (1DT) obtains electric, the control mouth of described the second two-way plug-in valve (2) is closed under the set pressure of described the first relief valve (2-2), the control mouth feed liquor of described the 4th two-way plug-in valve (4) and closing, described the first two-way plug-in valve (1) and described the 3rd two-way plug-in valve (3) are controlled mouthful time liquid and are opened, and realize good;
Described 3-position 4-way solenoid directional control valve the first electromagnet (1DT) dead electricity, the pressure reduction that the described the 3rd fixing damping (3-1) produces promotes described the second two-position two-way hydraulic control directional control valve (3-3) commutation, the control mouth of described the 3rd two-way plug-in valve (3) is closed because described the second two-position two-way hydraulic control directional control valve (3-3) commutates, the liquid flowing out from described second working interface (B) of described oil hydraulic motor is by described the second shuttle valve (4-2), toward described the 4th two-way plug-in valve (4) thus control end feed liquor described the 4th two-way plug-in valve (4) is closed, the liquid flowing out from described the second working interface (B) forms return oil pressure under the set pressure of described the second relief valve (3-2) forces the stall of oil hydraulic motor forward, realize good failure of oscillation,
Described 3-position 4-way solenoid directional control valve the second electromagnet (2DT) obtains electric, the control mouth feed liquor of described the first two-way plug-in valve (1) and closing, described the 3rd two-way plug-in valve (3) is controlled mouth and is closed under the set pressure of described the second relief valve (3-2), the control mouth of described the second two-way plug-in valve (2) and described the 4th two-way plug-in valve (4) returns liquid respectively and opens, and realizes little shaking;
Described 3-position 4-way solenoid directional control valve the second electromagnet (2DT) dead electricity, the pressure reduction that the described second fixing damping (2-1) produces promotes the first two-position two-way hydraulic control directional control valve (2-3) commutation, the control mouth of described the second two-way plug-in valve (2) is closed because described the first two-position two-way hydraulic control directional control valve (2-3) commutates, the liquid flowing out from described first working interface (A) of described oil hydraulic motor is by described the first shuttle valve (1-2), toward described the first two-way plug-in valve (1) thus control mouth feed liquor described the first two-way plug-in valve (1) is closed, the liquid flowing out from described first working interface (A) of described oil hydraulic motor forms return oil pressure under the set pressure of described the first relief valve (2-2), force oil hydraulic motor reversion stall, realize the little failure of oscillation that shakes,
In the time that two electromagnet of described 3-position 4-way solenoid directional control valve (5) all must not electricity, the control mouth of four described two-way plug-in valves all returns liquid and all opens, when realizing engine idle or road roller and not vibrating, and the unloaded oil return of oil hydraulic pump.
2. two-way plug-in vibration control valve according to claim 1, is characterized in that: the liquid entering hole of described 3-position 4-way solenoid directional control valve (5) is provided with the 5th fixing damping (7).
3. two-way plug-in vibration control valve according to claim 2, is characterized in that: described the second two-way plug-in valve (2) and described the 3rd two-way plug-in valve (3) are the two-way plug-in valve that spool is provided with fixing damping hole.
4. two-way plug-in vibration control valve according to claim 3, it is characterized in that: the described oil return interface (T) of described valve body, described the first working interface (A), and the working connection hole of the second working interface (B) is all shaped to long waist-shaped hole, described long waist-shaped hole is by two Line Segment, and the two halves circular arc that is arranged on described two Line Segment two ends surrounds, wherein, the diameter of described semi-circle equals the latus rectum of described two-way plug-in valve, the diameter that the length of described Line Segment adds the above semi-circle is not more than described oil return interface (T), described the first working interface (A), and described the second working interface (B) hydraulic fluid port screw thread path separately.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310204792.XA CN104214152B (en) | 2013-05-29 | 2013-05-29 | two-way plug-in vibration control valve |
| HK15103285.1A HK1202914A1 (en) | 2013-05-29 | 2015-03-31 | Two-way plug-in mounting type vibration control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310204792.XA CN104214152B (en) | 2013-05-29 | 2013-05-29 | two-way plug-in vibration control valve |
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| CN104214152A true CN104214152A (en) | 2014-12-17 |
| CN104214152B CN104214152B (en) | 2016-08-10 |
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| CN201310204792.XA Active CN104214152B (en) | 2013-05-29 | 2013-05-29 | two-way plug-in vibration control valve |
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| HK (1) | HK1202914A1 (en) |
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| CN104791318A (en) * | 2015-05-05 | 2015-07-22 | 东营蒙德金马机车有限公司 | Braking and reversing integrated valve assembly |
| CN104847722A (en) * | 2015-04-20 | 2015-08-19 | 徐工集团工程机械股份有限公司道路机械分公司 | Fast vibration absorption double-valve-element vibration valve and road roller comprising the same |
| CN105889160A (en) * | 2016-06-08 | 2016-08-24 | 湖北力帝机床股份有限公司 | Rapid hydraulic system of scrap steel shear |
| CN106337852A (en) * | 2016-11-16 | 2017-01-18 | 中南大学 | The two-way plug-in type vibration exciting valve |
| CN112065795A (en) * | 2020-09-03 | 2020-12-11 | 上海豪高机电科技有限公司 | Threaded cartridge valve group |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104214152B (en) | 2016-08-10 |
| HK1202914A1 (en) | 2015-10-09 |
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