CN103671323A - Open vibration valve with electric proportional control function and pressure compensation function and used for road roller - Google Patents
Open vibration valve with electric proportional control function and pressure compensation function and used for road roller Download PDFInfo
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Abstract
The invention relates to an open vibration valve with the electric proportional control function and the pressure compensation function and used for a road roller. The open vibration valve is characterized in that a valve block is provided with a pressure compensation valve (1), a three-position four-way electric proportional valve (2), a shuttle valve (3), a two-position two-way reversing valve (4), a variable throttling valve (5), a throttling orifice (6) and a one-way valve (7), an opening P, an opening T, an opening TT, an opening A and an opening B are formed in the valve block, the opening P serves as an oil inlet of the valve block, and is connected with an outlet of a gear pump, the opening T serves as an oil return opening of the valve block, the opening TT serves as an oil return opening of the pressure compensation valve (1), the opening A is connected with an oil inlet of a vibrating motor, and the opening B is connected with an oil outlet of the vibrating motor. According to the open vibration valve with the electric proportional control function and the pressure compensation function and used for the road roller, the reversing unloading function of a common vibration valve can be achieved, stepless speed adjustment can be achieved, an open system can have speed adjusting performance similar to speed adjusting performance of a closed system, and speed frequency management of the open system can be achieved.
Description
Technical field
The open type vibrating valve of the present invention and a kind of road roller, specifically a kind of road roller hydraulic system of open type vibration.
Background technique
The at present open type vibration at road roller all adopts valve control system, and vibrating valve is as the core control unit of system, and its major function is to realize that start and stop are shaken (work, off-load) and size is shaken (clockwise and anticlockwise).
Conventional vibrating valve main body is at present: small flow system adopts one group of three-position four-way valve solenoid directional control valve and safety valve combination more;
Mass flow system adopts a 3-position 4-way electromagnetic switch to do pilot-actuated valve, and one group of 3-position 4-way hydraulic control valve is done main control valve;
Or adopt several groups to have the cartridge valve of logical relation to do main valve, three position four-way electromagnetic valve is done pilot control, by the logical relation between several groups of main valves, realizes the commutation of flow system flow.
The generally just output of switching value of the control solenoid valve of several valves above, therefore only has commutation function, the speed-regulating function that can not realize, and the while can not be realized stepless speed regulation (frequency conversion control technique) and the volumetric efficiency compensating for loss and damage of vibration system; Can not realize the function of similar enclosed vibration system.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of commutation unloading function that not only can realize conventional open system vibrating valve is provided, can realize stepless speed regulation (being converter technique) simultaneously, make open system have the continuity speed adjusting performance of similar closed system, a kind of have electric proportional control and a pressure compensated road roller open type vibrating valve.
The object of the present invention is achieved like this:
A kind of electric proportional control and pressure compensated road roller open type vibrating valve, in this valve piece, be provided with pressure-compensated valve, 3-position 4-way electric proportional valve, shuttle valve, 2/2-way selector valve, variable throttle valve, restricting orifice and one-way valve, and on valve piece, have P, T, TT, A, these five mouths of B, wherein P mouth is the filler opening of valve piece, connect gear delivery side of pump, T mouth is the return opening of valve piece, the return opening that TT mouth is pressure-compensated valve, A mouth connects the filler opening of vibrating motor, and B mouth connects the oil outlet of vibrating motor;
The A1 mouth of described 3-position 4-way electric proportional valve is connected with A mouth, B1 mouth is connected with B mouth, P1 mouth enters with P mouth to be connected, T1 mouth is connected with the P3 mouth of 2/2-way selector valve, the T3 mouth of 2/2-way selector valve is connected with valve piece T mouth, the T2 mouth of described pressure-compensated valve is connected with T mouth, P2 mouth is connected by one-way valve with P mouth, the C5 of described shuttle valve is connected with A mouth, the C6 mouth of shuttle is connected with B mouth, the C3 mouth of shuttle valve is connected with the C2 mouth of pressure-compensated valve by restricting orifice, and C3 mouth is connected with the C4 mouth of 2/2-way selector valve by variable throttle valve again simultaneously.
Described electric proportional reversing valve is 3-position 4-way electric proportional valve, and meta closes core, and Median Function is Y type.
Described 2/2-way selector valve is hydraulic control valve or solenoid valve.
Electric proportional control of the present invention and pressure compensated road roller open type vibrating valve have the following advantages:
First this electric proportional control and pressure compensated road roller open type vibrating valve can realize complete machine oscillation system stepless frequency modulation, and the mode of operation for the successional multiple vibration parameters (frequency, excitation force) of complete machine output, adapts to the more working condition of wide range; Secondly owing to having used electric proportional valve, can control by the signal response speed of comparative example valve, realize soft starting of oscillation, the soft stop function of shaking, the impact of system when reducing start and stop and shaking, protection hydraulic element and vibration exciter; Moreover walking output signal and vibration output signal input control device can be realized to the intelligent control of the speed of travel and vibration frequency, realize energy-efficient, intelligent control; The proportional velocity regulating valve that the pressure-compensated valve of 3-position 4-way Proportional valve entrance series connection forms, can be so that the commutation of Proportional valve and speed governing be subject to the impact of outer load variations, the flow that is passing ratio valve is only relevant with the opening amount of valve, has guaranteed that vibrating motor has good speed rigidity (frequency stabilization) in speed regulation process.
Compare with existing open type vibrating valve, it has following outstanding advantages:
1, adoption rate is controlled, and can realize open type vibration system stepless frequency modulation, and exportable more running parameter (excitation force and frequency) complete machine working condition adaptability is stronger.
Soft starting of oscillation, the soft stop that 2, can the realize vibration system function of shaking, the impact of system when reducing start and stop and shaking, protection hydraulic element and vibration exciter.
3, adopt automatically controlled, sensory technique, can realize the speed of travel and vibration frequency is selected automatically, the speed that realizes open system frequently management automation is controlled, and improves compaction capacity and efficiency.
4, vibrating motor has good speed rigidity in speed regulation process, and vibration frequency is stable.
5, can realize the No Load Start of hydraulic system, start and stop are shaken and are steadily impacted littlely, avoid the resonance of system low speed.
Accompanying drawing explanation
Fig. 1 is the structural representation of electric proportional control of the present invention and pressure compensated road roller open type vibrating valve.
In figure: pressure-compensated valve 1,3-position 4-way electric proportional valve 2, shuttle valve 3,2/2-way selector valve 4, variable throttle valve 5, restricting orifice 6, one-way valve 7.
Embodiment
Referring to Fig. 1, a kind of electric proportional control of the present invention and pressure compensated road roller open type vibrating valve, in this valve piece, be provided with pressure-compensated valve 1,3-position 4-way electric proportional valve 2, shuttle valve 3,2/2-way selector valve 4, variable throttle valve 5, restricting orifice 6 and one-way valve 7, and on valve piece, have P, T, TT, A, these five mouths of B, wherein P mouth is the filler opening of valve piece, generally connect gear delivery side of pump, T mouth is the return opening of valve piece, TT mouth is the return opening of pressure-compensated valve 1, A mouth connects the filler opening of vibrating motor, and B mouth connects the oil outlet of vibrating motor.
The A1 mouth of described 3-position 4-way electric proportional valve 2 (the first oil outlet) is connected with A mouth, B1 mouth (the second oil outlet) is connected with B mouth, P1 mouth (filler opening) enters with P mouth to be connected, T1 mouth (return opening) is connected with the P3 mouth (filler opening) of 2/2-way selector valve 4, the T3 mouth (return opening) of 2/2-way selector valve 4 is connected with valve piece T mouth, the T2 mouth (return opening) of described pressure-compensated valve 1 is connected with T mouth, P2 mouth (filler opening) is connected by one-way valve 7 with P mouth, C5(first filler opening of described shuttle valve 3) be connected with A mouth, the C6 mouth of shuttle valve 3 (the second filler opening) is connected with B mouth, the C3 mouth (oil outlet) of shuttle valve 3 is connected with the C2 mouth (control port) of pressure-compensated valve 1 by restricting orifice 6, C3 mouth is connected with the C4 mouth (control port) of 2/2-way selector valve 4 by variable throttle valve 5 again simultaneously.
The working principle of its whole vibrating valve is:
The high pressure oil of gear pump enters valve piece P mouth, and when vibrating valve is not worked, the C2 mouth of pressure-compensated valve 1, without the load signal from A or B mouth, therefore the pressure oil of main valve P mouth is opened pressure-compensated valve 1 by TT mouth off-load oil return, is realized the off-load of not working of vibrating valve.
When vibrating valve need to be worked, a certain proportion electro-magnet of 3-position 4-way electric proportional valve 2 is exported continuous electrical signal, and Proportional valve is linear to be opened, and can realize the stepless speed regulation of flow, realizes stepless frequency conversion; Valve piece working hole A, B, by the selection of shuttle valve 3, pass to pressure-compensated valve 1 by restricting orifice 6 by load signal simultaneously, and recuperation valve is set up pressure, and now pressure-compensated valve 1 can be considered the main safety valve of system; Load signal enters the epicoele of 2/2-way selector valve 4 by variable throttle valve 5 simultaneously, makes selector valve in without throttling position, reduces system pressure loss.When system failure of oscillation, when reducing or disappearing due to load signal, 2/2-way selector valve 4 resets under spring action, and valve, in throttling position, increases system back pressure, can reduce the inertia load of vibration system to motor, makes system failure of oscillation fast, the resonance of deduction and exemption low speed.
Adopting 3-position 4-way electric proportional valve 2 is main valve, and pressure-compensated valve 1 proportion of composing overflowing and speed valve, not only can realize conventional vibration valve commutation unloading function, can realize stepless speed regulation simultaneously, makes open system have the speed adjusting performance of similar closed system; Have load sensing technology simultaneously, make the flow relevant with the aperture of valve port (being electric current) by main valve, and irrelevant with load, vibration system flow is steady.
The pressure oil of gear pump enters the P mouth of valve piece, and one-way valve 7, for can prevent the reverse impact of system pressure to pump, can be pressure-compensated valve 1 simultaneously and sets release pressure; 2 commutations of 3-position 4-way electric proportional valve and throttle grverning, control enters the flow of motor, the load signal that shuttle valve 3 is got system acts on the spring chamber of pressure-compensated valve 1, pressure-compensated valve 1 forms series flow control valve with proportional reversing valve 2, restricting orifice 6 makes load signal more steady, the failure of oscillation time that variable throttle valve 5 can regulating system.
The control signal pattern of 3-position 4-way electric proportional valve 2 can have manual mode and automatic mode, manual mode can manually be controlled electric current input and carry out manual frequency modulation, automatic mode be by after speed of travel sensor, vibration frequency sensor input ECU controller again comparative example valve carry out closed loop control, realize automatic frequency adjustment.
Claims (3)
1. an electric proportional control and pressure compensated road roller open type vibrating valve, it is characterized in that: in this valve piece, be provided with pressure-compensated valve (1), 3-position 4-way electric proportional valve (2), shuttle valve (3), 2/2-way selector valve (4), variable throttle valve (5), restricting orifice (6) and one-way valve (7), and have P on valve piece, T, TT, A, these five mouths of B, wherein P mouth is the filler opening of valve piece, connect gear delivery side of pump, T mouth is the return opening of valve piece, TT mouth is the return opening of pressure-compensated valve (1), A mouth connects the filler opening of vibrating motor, B mouth connects the oil outlet of vibrating motor,
The A1 mouth of described 3-position 4-way electric proportional valve (2) is connected with A mouth, B1 mouth is connected with B mouth, P1 mouth enters with P mouth to be connected, T1 mouth is connected with the P3 mouth of 2/2-way selector valve (4), the T3 mouth of 2/2-way selector valve (4) is connected with valve piece T mouth, the T2 mouth of described pressure-compensated valve (1) is connected with T mouth, P2 mouth is connected by one-way valve (7) with P mouth, the C5 of described shuttle valve (3) is connected with A mouth, the C6 mouth of shuttle valve (3) is connected with B mouth, the C3 mouth of shuttle valve (3) is connected with the C2 mouth of pressure-compensated valve (1) by restricting orifice (6), C3 mouth is connected with the C4 mouth of 2/2-way selector valve (4) by variable throttle valve (5) again simultaneously.
2. a kind of electric proportional control according to claim 1 and pressure compensated road roller open type vibrating valve, is characterized in that: described electric proportional reversing valve (2) is 3-position 4-way electric proportional valve, and meta closes core, and Median Function is Y type.
3. a kind of electric proportional control according to claim 1 and pressure compensated road roller open type vibrating valve, is characterized in that: described 2/2-way selector valve (4) is hydraulic control valve or solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310644949.0A CN103671323A (en) | 2013-12-05 | 2013-12-05 | Open vibration valve with electric proportional control function and pressure compensation function and used for road roller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310644949.0A CN103671323A (en) | 2013-12-05 | 2013-12-05 | Open vibration valve with electric proportional control function and pressure compensation function and used for road roller |
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| CN103671323A true CN103671323A (en) | 2014-03-26 |
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| CN201310644949.0A Pending CN103671323A (en) | 2013-12-05 | 2013-12-05 | Open vibration valve with electric proportional control function and pressure compensation function and used for road roller |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104196801A (en) * | 2014-09-05 | 2014-12-10 | 酒泉奥凯种子机械股份有限公司 | Speed-regulating feedback control valve of hydraulic motor |
| CN104195926A (en) * | 2014-08-13 | 2014-12-10 | 潍柴动力股份有限公司 | Road roller, hydraulic system of road roller, and control method for hydraulic system |
| CN104214160A (en) * | 2014-09-05 | 2014-12-17 | 酒泉奥凯种子机械股份有限公司 | Multi-path hydraulic motor speed regulation feedback control valve |
| 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 |
| CN105443480A (en) * | 2014-08-12 | 2016-03-30 | 徐工集团工程机械股份有限公司 | Work valve body structure and proportional multi-way valve |
| CN104776070B (en) * | 2015-03-12 | 2016-08-24 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of material transferring system for spreading machine with multi-state adaptive pattern |
| CN106402059A (en) * | 2016-12-26 | 2017-02-15 | 徐工集团工程机械有限公司 | Load port individual valve, hydraulic bus control system and engineering machinery |
| CN106438555A (en) * | 2016-12-28 | 2017-02-22 | 徐工集团工程机械有限公司 | Hydraulic control valve and hydraulic system |
| CN107102589A (en) * | 2017-05-27 | 2017-08-29 | 徐工集团工程机械股份有限公司 | A kind of multi-functional gear selector based on construction technology |
| CN107575428A (en) * | 2017-09-05 | 2018-01-12 | 宁波铝台精机有限公司 | One kind is without impingement electricity hydraulic control one-way valve |
| CN108980208A (en) * | 2018-10-09 | 2018-12-11 | 杭州励贝电液科技有限公司 | A kind of superhigh precision pressure control device |
| US11459220B2 (en) | 2017-11-30 | 2022-10-04 | Danfoss Power Solution II Technology A/S | Hydraulic system with load sense and methods thereof |
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| US20070013151A1 (en) * | 2004-01-28 | 2007-01-18 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Active roll stabilization system |
| DE102008002422A1 (en) * | 2008-06-13 | 2009-12-17 | Zf Friedrichshafen Ag | Hydraulic supply system for supplying a hydraulic consumer with at least one consumption range |
| CN101475130A (en) * | 2009-01-22 | 2009-07-08 | 重庆键英液压机电有限公司 | Hydraulic time-delay double-stage braking hoister hydraulic station |
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Cited By (18)
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| DE102015215267B4 (en) | 2014-08-12 | 2024-02-01 | Xuzhou Construction Machinery Group Co., Ltd. | Functional connection valve body structure and proportional multi-way valve |
| CN105443480A (en) * | 2014-08-12 | 2016-03-30 | 徐工集团工程机械股份有限公司 | Work valve body structure and proportional multi-way valve |
| CN104195926A (en) * | 2014-08-13 | 2014-12-10 | 潍柴动力股份有限公司 | Road roller, hydraulic system of road roller, and control method for hydraulic system |
| CN104214160A (en) * | 2014-09-05 | 2014-12-17 | 酒泉奥凯种子机械股份有限公司 | Multi-path hydraulic motor speed regulation feedback control valve |
| CN104214160B (en) * | 2014-09-05 | 2017-02-15 | 酒泉奥凯种子机械股份有限公司 | Multi-path hydraulic motor speed regulation feedback control valve |
| CN104196801A (en) * | 2014-09-05 | 2014-12-10 | 酒泉奥凯种子机械股份有限公司 | Speed-regulating feedback control valve of hydraulic motor |
| CN104776070B (en) * | 2015-03-12 | 2016-08-24 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of material transferring system for spreading machine with multi-state adaptive pattern |
| 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 |
| CN106402059A (en) * | 2016-12-26 | 2017-02-15 | 徐工集团工程机械有限公司 | Load port individual valve, hydraulic bus control system and engineering machinery |
| CN106438555A (en) * | 2016-12-28 | 2017-02-22 | 徐工集团工程机械有限公司 | Hydraulic control valve and hydraulic system |
| CN106438555B (en) * | 2016-12-28 | 2018-10-16 | 徐工集团工程机械有限公司 | Hydraulic control valve and hydraulic system |
| CN107102589B (en) * | 2017-05-27 | 2019-06-11 | 徐工集团工程机械股份有限公司 | A kind of multi-functional gear selector based on construction technology |
| CN107102589A (en) * | 2017-05-27 | 2017-08-29 | 徐工集团工程机械股份有限公司 | A kind of multi-functional gear selector based on construction technology |
| CN107575428A (en) * | 2017-09-05 | 2018-01-12 | 宁波铝台精机有限公司 | One kind is without impingement electricity hydraulic control one-way valve |
| CN107575428B (en) * | 2017-09-05 | 2023-08-11 | 宁波铝台精机有限公司 | Impact-free electro-hydraulic control one-way valve |
| US11459220B2 (en) | 2017-11-30 | 2022-10-04 | Danfoss Power Solution II Technology A/S | Hydraulic system with load sense and methods thereof |
| CN108980208A (en) * | 2018-10-09 | 2018-12-11 | 杭州励贝电液科技有限公司 | A kind of superhigh precision pressure control device |
| CN108980208B (en) * | 2018-10-09 | 2020-01-17 | 杭州励贝电液科技有限公司 | Ultrahigh-precision pressure control device |
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Application publication date: 20140326 |