CN202273936U - Two-way inserting type vibration valve and electrohydraulic control unit - Google Patents

Two-way inserting type vibration valve and electrohydraulic control unit Download PDF

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Publication number
CN202273936U
CN202273936U CN2011204162825U CN201120416282U CN202273936U CN 202273936 U CN202273936 U CN 202273936U CN 2011204162825 U CN2011204162825 U CN 2011204162825U CN 201120416282 U CN201120416282 U CN 201120416282U CN 202273936 U CN202273936 U CN 202273936U
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CN
China
Prior art keywords
valve
way plug
plug
control
way
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CN2011204162825U
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Chinese (zh)
Inventor
郭熛
王育春
邰小琴
戴明翰
马兰
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PERMCO (TIANJIN) HYDRAULIC Inc Ltd
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PERMCO (TIANJIN) HYDRAULIC Inc Ltd
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Abstract

The utility model relates to a two-way inserting type vibration valve, which comprises a valve body and an electrohydraulic control return circuit, wherein the electrohydraulic control return circuit is inserted in an inserting cavity of the valve body, formed by a two-way inserting valve, a control cover plate, a pilot electromagnetic direction valve, an overflow valve and the like and used for controlling a hydraulic motor to run. The electrohydraulic control return circuit comprises a directional branch return circuit for controlling the hydraulic motor to rotate forward or rotate reversely, a branch return circuit for controlling the hydraulic motor to stall forward or to stall reversely and a branch return circuit assembly for providing overload protection to a hydraulic vibration system of a road roller. An electrohydraulic control unit is further related, comprises a special vibration controller for controlling the two-way inserting type vibration valve, and controls working time sequence of each electromagnetic valve through the vibration controller. The two-way inserting type vibration valve and the electrohydraulic control unit can lighten hydraulic impact during oscillation starting, amplitude and oscillation stop of the road roller, reduces peak transmission of a hydraulic system, improving reliability and durability of operation of hydraulic elements, shortens oscillation stop time, regulates and controls the oscillation stop time, and improves operating quality of the road roller and comfortable feeling of drivers.

Description

A kind of two logical plug-in type vibrating valve and electrohydraulic control units
Technical field
The utility model relates to a kind of two logical plug-in type vibrating valves, specifically, is two logical plug-in type vibrating valves of the control oil hydraulic motor work on a kind of vibratory roller, and the electrohydraulic control unit with these two logical plug-in type vibrating valves.
Background technique
For reducing cost, it is that the application of open hydraulic transmission and control system of power source is commonplace that the shake unit of present domestic vibratory roller adopts with metering pump (being gear pump mostly).Vibratory roller is in starting of oscillation, failure of oscillation process; There are an ascending or descending change procedure in the vibration frequency of its vibrating wheels and vibration acceleration; In the transient process of this short time; Vibration characteristics when the vibration parameters of vibrating wheels is different from its steady operation; For band carry to start, be easy to hydraulic system formed impacting with high pressure when adding the vibrating hydraulic motor operations in the road roller starting of oscillation stage, this instantaneous high pressure bring enormous impact to cause damage and the pipeline of hydraulic pressure component to connect will for components such as the pump in the hydraulic system, valve, motor and pipeline to become flexible and reveal, befouling environment; Analyze according to statistics, the fault in the road roller vibratory hydraulic system more than 60% is owing to the starting of oscillation high pressure causes; Rotator inertia owing to road roller exciting rotor during failure of oscillation can make the failure of oscillation overlong time cause complete machine resonance, with operation quality that influences road roller and operator's work travelling comfort.The Vibrating valve block of using like the disclosed a kind of large-tonnage road roller of Chinese patent document CN2716326Y.This Vibrating valve block; Comprise main valve piece and controll block; The main valve piece comprises relief valve, one-way valve and main valve block body; Be fitted with many one-way valves and relief valve in the main valve block body, controll block comprises 3-position 4-way solenoid directional control valve and control valve piece, has oil inlet P, oil return inlet T, first control port and second control port on the controll block; Also have filler opening, return opening, first control port, second control port, first actuator port and second actuator port on the main valve piece, each hydraulic fluid port on the controll block respectively with the main valve piece on corresponding hydraulic fluid port be connected.In this existing technology; Thereby failure of oscillation is that the mode of feed flow stops slowly oil hydraulic motor in the oil hydraulic motor through stopping; Therefore; Because the rotator inertia of road roller exciting rotor makes the failure of oscillation overlong time cause complete machine resonance, influence the operation quality of road roller and operator's work travelling comfort when often having failure of oscillation.
The model utility content
For this reason; The utility model technical problem to be solved is that Vibrating valve block of the prior art can not overcome the rotator inertia of road roller exciting rotor and make the failure of oscillation overlong time cause complete machine resonance; Influence operation quality and the operator's of road roller the problem of work travelling comfort, provide a kind of and can effectively shorten two logical plug-in type vibrating valve and the electrohydraulic control units that the oil hydraulic motor stall is the road roller failure of oscillation time.
For solving the problems of the technologies described above, a kind of two logical plug-in type vibrating valves of the utility model comprise
Valve body; Form the plug-in mounting chamber on the said valve body; And the oil-feed interface (P) that is communicated with the oil outlet of oil hydraulic pump; The oil return interface (T) that is communicated with the oil sump tank of hydraulic system, first working interface (A) and second working interface (B) that are communicated with first hydraulic fluid port and second hydraulic fluid port at oil hydraulic motor two ends respectively;
Major loop, said major loop are inserted in the said plug-in mounting chamber of said valve body, comprise by four two-way plug-in valves, and the direction control circuit that the 3-position 4-way solenoid directional control valve constitutes, wherein
First two-way plug-in valve is arranged on the feed flow of past said first working interface (A) of the said oil-feed interface of control (P) between said oil-feed interface (P) and said first working interface (A); The 3rd two-way plug-in valve is arranged between said second working interface (B) and the said oil return interface (T); Control said second working interface (B) towards the liquid that returns between the said oil return interface (T); When said first two-way plug-in valve and said the 3rd two-way plug-in valve are together opened, constitute good minute loop; The 4th two-way plug-in valve is arranged on the feed flow of past said second working interface (B) of the said oil-feed interface of control (P) between said oil-feed interface (P) and second working interface (B); Second two-way plug-in valve is arranged between said first working interface (A) and the said oil return interface (T); Control said first working interface (A) towards the liquid that returns between the said oil return interface (T); When said the 4th two-way plug-in valve and said second two-way plug-in valve are together opened, constitute the branch loop that shakes for a short time;
First electromagnet of said 3-position 4-way solenoid directional control valve gets; During the second electromagnet dead electricity; The control mouth of said second two-way plug-in valve and said the 4th two-way plug-in valve is feed liquor and closing respectively; Said first two-way plug-in valve and said the 3rd two-way plug-in valve control mouth return liquid and open, and realize good; Said second electromagnet of said 3-position 4-way solenoid directional control valve gets; During the first electromagnet dead electricity; The control mouth of said first two-way plug-in valve and said the 3rd two-way plug-in valve is feed liquor and closing respectively; The control mouth of said second two-way plug-in valve and said the 4th two-way plug-in valve returns liquid respectively and opens, and realizes shaking for a short time; Said first electromagnet of said 3-position 4-way solenoid directional control valve; And during the equal dead electricity of said second electromagnet; The control mouth of four said two-way plug-in valves all returns liquid and all opens, when realizing that engine idle or road roller do not vibrate, and the unloaded oil return of oil hydraulic pump;
Also comprise failure of oscillation branch loop, said failure of oscillation branch loop is provided with two covers, the good failure of oscillation of a cover control, and a cover is controlled the failure of oscillation that shakes for a short time, wherein
Good failure of oscillation branch loop comprises that being arranged on said the 3rd two-way plug-in valve controls mouth and the intersection point place of said the 4th two-way plug-in valve control mouth and the 3rd solenoid directional control valve between said second working interface (B); And the control mouth place that is arranged on said the 3rd two-way plug-in valve, realize that said second electromagnet and said the 3rd solenoid directional control valve replace feed flow toward the control mouth place of said the 3rd two-way plug-in valve or return first shuttle valve of liquid; Be arranged on the control mouth place of said the 4th two-way plug-in valve; Realize that said first electromagnet and said the 3rd solenoid directional control valve replace second shuttle valve of feed flow or time liquid toward the control mouth place of said the 4th two-way plug-in valve; Wherein said the 3rd solenoid directional control valve gets when electric; Said second working interface (B) communicates with the control mouth of said the 3rd two-way plug-in valve, said the 4th two-way plug-in valve respectively; Make the control mouth feed liquor of said the 3rd two-way plug-in valve, said the 4th two-way plug-in valve and close; During said the 3rd solenoid directional control valve dead electricity, said second working interface (B) blocks with the control mouth of said the 3rd two-way plug-in valve, said the 4th two-way plug-in valve respectively, makes the control mouth of said the 3rd two-way plug-in valve, said the 4th two-way plug-in valve return liquid and opens;
For a short time the failure of oscillation branch loop that shakes comprises and is arranged on said second two-way plug-in valve control mouthful and the intersection point place of said first two-way plug-in valve control mouth and second solenoid directional control valve between said first working interface (A); And the control mouth place that is arranged on said second two-way plug-in valve, realize that said first electromagnet and said second solenoid directional control valve replace feed flow toward the control mouth place of said second two-way plug-in valve or return the 3rd shuttle valve of liquid; Be arranged on the control mouth place of said first two-way plug-in valve; Realize that said second electromagnet and said second solenoid directional control valve replace the 4th shuttle valve of feed flow or time liquid toward the control mouth place of said first two-way plug-in valve; Wherein said second solenoid directional control valve gets when electric; Said first working interface (A) communicates with the control mouth of said second two-way plug-in valve, said first two-way plug-in valve respectively; Make the control mouth feed liquor of said second two-way plug-in valve, said first two-way plug-in valve and close; During the said second solenoid directional control valve dead electricity, said first working interface (A) blocks with the control mouth of said second two-way plug-in valve, said first two-way plug-in valve respectively, makes the control mouth of said second two-way plug-in valve, said first two-way plug-in valve return liquid and opens.
Said good failure of oscillation branch loop comprises that also being arranged on said the 3rd two-way plug-in valve controls mouth and the intersection point place of said the 4th two-way plug-in valve control mouth and first relief valve between the said oil return interface (T); The said failure of oscillation branch loop that shakes for a short time comprises that being arranged on said second two-way plug-in valve controls mouth and the intersection point place of said first two-way plug-in valve control mouth and second relief valve between the said oil return interface (T).
The liquid entering hole place of said 3-position 4-way solenoid directional control valve, the liquid entering hole place of said first relief valve, the liquid entering hole place of said second relief valve respectively is provided with a damping plug.
Comprise also on the said major loop that one sets up oil pressure that oil-feed interface (P) locates, the safety branch loop of overload protection is provided for the road roller vibration control system.
Said safety branch loop is made up of a precursor overflow valve, the 5th two-way plug-in valve and two damping plugs; Wherein, The filler opening of said the 5th two-way plug-in valve is communicated with the said oil-feed interface (P) of valve body, and its oil outlet is communicated with the oil return interface (T) of said valve body, and its control mouthful place is provided with a said damping plug; Draw two oil ducts by said damping plug place; Article one, be communicated with the filler opening of precursor overflow valve, second is communicated with said oil-feed interface (P), and on second, also is provided with a said damping plug; The oil outlet of said precursor overflow valve is communicated with the oil return interface (T) of said valve body.
The oil return interface (T) of said valve body; Said first working interface (A), and the corresponding working connection hole of second working interface (B) all is shaped to long waist-shaped hole, said long waist-shaped hole is by two Line Segment; And two semi-circlees that are arranged on said two Line Segment two ends surround; Wherein, the diameter of said semi-circle equals the latus rectum of said two-way plug-in valve, and the diameter that the length of said Line Segment adds the above semi-circle is not more than said oil return interface (T); Said first working interface (A), and said second working interface (B) hydraulic fluid port screw thread path separately.
A kind of electrohydraulic control unit also comprises the control gear that is arranged on the road roller operator cabin, and is composed of the electrical-controller of controlling various operating mode programs; Wiring terminal on the said electrical-controller respectively with said first electromagnet, said second electromagnet, said second solenoid directional control valve; Said the 3rd solenoid directional control valve is corresponding to be connected; Through operating said control gear, realize of the control of said electrical-controller, thereby realize the various operating modes of road roller each solenoid directional control valve.
The technique scheme of the utility model is compared existing technology and is had the following advantages; 1, the utility model adopts direction control branch loop, failure of oscillation branch loop and the safety branch loop of the compositions such as two-way plug-in valve of electric liquid guide control; Alleviated the hydraulic shock of road roller when starting of oscillation, luffing and failure of oscillation; Reduce the surge pressure of hydraulic system, improved the reliability and the durability of hydraulic element work, shortened the failure of oscillation time; It is adjustable that while can also make the failure of oscillation time of road roller accomplish, improved the operation quality of road roller and driver's comfortable feel; 2, in the utility model, the working connection hole shape design growth waist-shaped hole that each the working connection interface on the valve body is corresponding, the logical pasta that can increase each working connection is long-pending, improves oil filling capacity, has reduced the pressure loss simultaneously.
Description of drawings
For the content that makes the utility model is more clearly understood,, the utility model is done further detailed explanation, wherein below according to the specific embodiment of the utility model and combine accompanying drawing
Fig. 1 is the system schematic of the two logical plug-in type vibrating valves of the utility model;
Fig. 2 is the plan view of the two logical plug-in type vibrating valves of the utility model;
Fig. 3 is the electrical-controller elementary diagram of the utility model.
Reference character is expressed as among the figure: 1-first two-way plug-in valve; 2-second two-way plug-in valve; 3-the 3rd two-way plug-in valve; 4-the 4th two-way plug-in valve; First electromagnet of 5-3-position 4-way solenoid directional control valve; Second electromagnet of 6-3-position 4-way solenoid directional control valve; 7-second solenoid directional control valve; 8-the 3rd solenoid directional control valve; 9-first shuttle valve; 10-second shuttle valve; 11-the 3rd shuttle valve; 12-the 4th shuttle valve; 13-first relief valve; 14-second relief valve; 15a-first damping plug; 15b-second damping plug; 16-safety is divided the loop; 16a-the 5th two-way plug-in valve; The 16b-precursor overflow valve; The 17-control gear; The 18-electrical-controller; P-oil-feed interface; T-oil return interface; A-first working interface; B-second working interface.
Embodiment
As shown in Figure 1, a kind of two logical plug-in type vibrating valves of present embodiment comprise
Valve body; Form the plug-in mounting chamber on the said valve body; And the oil-feed interface (P) that is communicated with the oil outlet of oil hydraulic pump; The oil return interface (T) that is communicated with the oil sump tank of hydraulic system, first working interface (A) and second working interface (B) that are communicated with first hydraulic fluid port and second hydraulic fluid port at oil hydraulic motor two ends respectively;
Major loop, said major loop are inserted in the said plug-in mounting chamber of said valve body, comprise by four two-way plug-in valves, and the direction control circuit that the 3-position 4-way solenoid directional control valve constitutes, wherein
First two-way plug-in valve 1 is arranged on the feed flow of past said first working interface (A) of the said oil-feed interface of control (P) between said oil-feed interface (P) and said first working interface (A); The 3rd two-way plug-in valve 3 is arranged between said second working interface (B) and the said oil return interface (T); Control said second working interface (B) towards the liquid that returns between the said oil return interface (T); When said first two-way plug-in valve 1 is together opened with said the 3rd two-way plug-in valve 3, constitute good minute loop; The 4th two-way plug-in valve 4 is arranged on the feed flow of past said second working interface (B) of the said oil-feed interface of control (P) between said oil-feed interface (P) and second working interface (B); Second two-way plug-in valve 2 is arranged between said first working interface (A) and the said oil return interface (T); Control said first working interface (A) towards the liquid that returns between the said oil return interface (T); When said the 4th two-way plug-in valve 4 is together opened with said second two-way plug-in valve 2, constitute the branch loop that shakes for a short time;
First electromagnet 5 of said 3-position 4-way solenoid directional control valve; During second electromagnet, 6 dead electricity; The control mouth of said second two-way plug-in valve 2 and said the 4th two-way plug-in valve 4 is feed liquor and closing respectively; Said first two-way plug-in valve 1 is opened with said the 3rd two-way plug-in valve 3 controls mouthful time liquid, realizes good; Said second electromagnet 6 of said 3-position 4-way solenoid directional control valve; During first electromagnet, 5 dead electricity; The control mouth of said first two-way plug-in valve 1 and said the 3rd two-way plug-in valve 3 is feed liquor and closing respectively; The control mouth of said second two-way plug-in valve 2 and said the 4th two-way plug-in valve 4 returns liquid respectively and opens, and realizes shaking for a short time; Said first electromagnet 5 of said 3-position 4-way solenoid directional control valve; And during the equal dead electricity of said second electromagnet 6; The control mouth of four said two-way plug-in valves all returns liquid and all opens, when realizing that engine idle or road roller do not vibrate, and the unloaded oil return of oil hydraulic pump;
For the failure of oscillation overlong time that the rotor inertia that overcomes owing to oil hydraulic motor causes, the vibrating valve of the utility model also comprises failure of oscillation branch loop, and said failure of oscillation branch loop is provided with two covers, the good failure of oscillation of a cover control, and the cover control failure of oscillation that shakes for a short time, wherein
Good failure of oscillation branch loop comprises that being arranged on said the 3rd two-way plug-in valve 3 controls mouth and the intersection point place of said the 4th two-way plug-in valve 4 control mouths and the 3rd solenoid directional control valve 8 between said second working interface (B); And the control mouth place that is arranged on said the 3rd two-way plug-in valve 3, realize that said second electromagnet 6 and said the 3rd solenoid directional control valve 8 replace feed flow toward the control mouth place of said the 3rd two-way plug-in valves 3 or return first shuttle valve 9 of liquid; Be arranged on the control mouth place of said the 4th two-way plug-in valve 4; Realize that said first electromagnet 5 and said the 3rd solenoid directional control valve 8 replace second shuttle valve 10 of feed flow or time liquid toward the control mouth place of said the 4th two-way plug-in valve 4; Wherein said the 3rd solenoid directional control valve 8 when electric; Said second working interface (B) communicates with the control mouth of said the 3rd two-way plug-in valve 3, said the 4th two-way plug-in valve 4 respectively; Make the control mouth feed liquor of said the 3rd two-way plug-in valve 3, said the 4th two-way plug-in valve 4 and close; During said the 3rd solenoid directional control valve 8 dead electricity, said second working interface (B) blocks with the control mouth of said the 3rd two-way plug-in valve 3, said the 4th two-way plug-in valve 4 respectively, makes the control mouth of said the 3rd two-way plug-in valve 3, said the 4th two-way plug-in valve 4 return liquid and opens;
For a short time the failure of oscillation branch loop that shakes comprises and is arranged on said second two-way plug-in valve 2 control mouthful and the intersection point place of said first two-way plug-in valve, 1 control mouth and second solenoid directional control valve 7 between said first working interface (A); And the control mouth place that is arranged on said second two-way plug-in valve 2, realize that said first electromagnet 5 and said second solenoid directional control valve 7 replace feed flow toward the control mouth place of said second two-way plug-in valves 2 or return the 3rd shuttle valve 11 of liquid; Be arranged on the control mouth place of said first two-way plug-in valve 1; Realize that said second electromagnet 6 and said second solenoid directional control valve 7 replace the 4th shuttle valve 12 of feed flow or time liquid toward the control mouth place of said first two-way plug-in valve 1; Wherein said second solenoid directional control valve 7 when electric; Said first working interface (A) communicates with the control mouth of said second two-way plug-in valve 2, said first two-way plug-in valve 1 respectively; Make the control mouth feed liquor of said second two-way plug-in valve 2, said first two-way plug-in valve 1 and close; During said second solenoid directional control valve, 7 dead electricity, said first working interface (A) blocks with the control mouth of said second two-way plug-in valve 2, said first two-way plug-in valve 1 respectively, makes the control mouth of said second two-way plug-in valve 2, said first two-way plug-in valve 1 return liquid and opens.
Said good failure of oscillation branch loop comprises that also being arranged on said the 3rd two-way plug-in valve 3 controls mouth and the intersection point place of said the 4th two-way plug-in valve 4 control mouths and first relief valve 13 between the said oil return interface (T); The said failure of oscillation branch loop that shakes for a short time comprises that being arranged on said second two-way plug-in valve 2 controls mouth and the intersection point place of said first two-way plug-in valve, 1 control mouth and second relief valve 14 between the said oil return interface (T).
The liquid entering hole place of said second solenoid valve 7, the liquid entering hole place of said the 3rd solenoid valve 8 respectively is provided with a damping plug, can prevent second solenoid directional control valve, receives the impact of hydraulic pressure during the switching-over of the 3rd solenoid directional control valve.
Comprise also on the said major loop that one sets up oil pressure that oil-feed interface (P) locates, the safety branch loop 16 of overload protection is provided for the road roller hydraulic vibration control system.In the present embodiment; Said safety branch loop 16 is made up of a precursor overflow valve 16b, the 5th a two-way plug-in valve 16a and two damping plugs, and wherein, the filler opening of said the 5th two-way plug-in valve 16a is communicated with the said oil-feed interface (P) of valve body; Its oil outlet is communicated with the oil return interface (T) of said valve body; Its control mouthful place is provided with a said damping plug, draws two oil ducts by said damping plug place, and article one is communicated with the filler opening of precursor overflow valve 16b; Second is communicated with said oil-feed interface (P), and on second, also is provided with a said damping plug; The oil outlet of said precursor overflow valve 16b is communicated with the oil return interface (T) of said valve body.
As shown in Figure 2, the oil return interface (T) of said valve body, said first working interface (A); And the corresponding working connection hole of second working interface (B) all is shaped to long waist-shaped hole; Said long waist-shaped hole is by two Line Segment, and two semi-circlees that are arranged on said two Line Segment two ends surround, wherein; The diameter of said semi-circle equals the latus rectum of said two-way plug-in valve; The diameter that the length of said Line Segment adds the above semi-circle is not more than said oil return interface (T), said first working interface (A), and said second working interface (B) hydraulic fluid port screw thread path separately.The shaped design growth waist-shaped hole in each the working connection hole on the valve body, the logical pasta that can increase each working connection interface is long-pending, improves oil filling capacity, has reduced the pressure loss simultaneously.
As shown in Figure 3, a kind of electrohydraulic control unit with two above-mentioned logical plug-in type vibrating valves also comprises the control gear 17 that is arranged on the road roller operator cabin; And be composed of the electrical-controller 18 of controlling various operating mode programs; Wiring terminal on the said electrical-controller 18 respectively with said first electromagnet 5, said second electromagnet 6, said second solenoid directional control valve 7; Said 8 corresponding connections of the 3rd solenoid directional control valve; Through operating said control gear 17, realize the control of 18 pairs of each solenoid directional control valves of said electrical-controller, thereby realize the various operating modes of road roller.
The working procedure of the two logical plug-in type vibrating valves of the utility model:
When (1) engine idle and road roller do not vibrate
First electromagnet 5 of 3-position 4-way solenoid directional control valve, second electromagnet 6; And two two-position four-way solenoid directional control valves; Promptly during the equal dead electricity of electromagnet (not adhesive of electromagnet) of the electromagnet of second solenoid directional control valve 7 and the 3rd solenoid directional control valve 8, because of the equal decompression of control mouth (off-load) of each two-way plug-in valve, so the oil of coming in from oil hydraulic pump all directly the spool of each two-way plug-in valve of jack-up flow to back oil road; Flow back to fuel tank, oil hydraulic pump no-load running from the oil return interface T of valve body.
(2) oil hydraulic motor just changes (is good starting of oscillation and good operating mode work with respect to road roller)
First electromagnet 5 of 3-position 4-way solenoid directional control valve gets electric (its spool moves to right); The electromagnet of all the other solenoid directional control valves all is in power failure state; At this moment; The equal decompression of control mouth of first two-way plug-in valve 1 and the 3rd two-way plug-in valve 3 (the control mouth is communicated with off-load with back oil road) make this first, second two-way plug-in valve all be in opening state, and the control mouth of second two-way plug-in valve 2 and the 4th two-way plug-in valve 4 advances to have pressure oil to make this second, the 4th two-way plug-in valve be in closed condition; The control mouth of the 5th two-way plug-in valve 16a also advances to have pressure oil, and it is in closed condition; At this moment; Oil hydraulic pump comes oil to get into and its spool of jack-up from 1 import of first two-way plug-in valve; Get into first work oil duct of valve body and first hydraulic fluid port that first working interface (A) gets into oil hydraulic motor through its outlet, the primer fluid pressure motor just changes (is good starting of oscillation and good work with respect to road roller), and the inside oil extraction of oil hydraulic motor gets into second working interface (B) of valve body through oil hydraulic motor second hydraulic fluid port; And along the second work oil duct; Get into and its spool of jack-up from the import of the 3rd two-way plug-in valve 3, through the back oil road of its outlet entering valve body, (T) flows back to hydraulic reservoir through the oil return interface.
(3) oil hydraulic motor is just changeing stall (is good failure of oscillation with respect to road roller)
First electromagnet, 5 dead electricity (its spool is got back to meta) of 3-position 4-way solenoid directional control valve; Electromagnet by electrical-controller 18 controls the 3rd solenoid directional control valve 8 is delayed time electricly (its spool moves to right); This moment, the inside oil extraction of oil hydraulic motor got into valve body second working interface (B) through oil hydraulic motor second hydraulic fluid port; Behind the 3rd solenoid directional control valve 8, be divided into three strands through the first damping plug 15a along the second work oil duct; One gets into the filler opening of first relief valve 13, and the return opening of first relief valve 13 communicates with the system oil return road, and another stock-traders' know-how first shuttle valve 9 gets into the control mouth of the 3rd two-way plug-in valve 3; The 3rd stock-traders' know-how second shuttle valve 10 gets into the control mouth of the 4th two-way plug-in valve 4; Make the 3rd, the 4th two-way plug-in valve be closed, thereby increase return oil pressure for the oil return of second hydraulic fluid port of oil hydraulic motor, the pressure of the control mouth of the 3rd, the 4th two-way plug-in valve is set up by first relief valve 13.The return oil pressure that forms forces electromagnet stall in the time at delay cut-off of just changeing the 3rd solenoid directional control valve of controlling at electrical-controller 18 8 (with respect to road roller good failure of oscillation in the time of electrical-controller 18 setting) of oil hydraulic motor.
(4) oil hydraulic motor counter-rotating (being the starting of oscillation and the operating mode work of shaking for a short time of shaking for a short time) with respect to press machine
Second electromagnet 6 of 3-position 4-way solenoid directional control valve gets electric (its spool moves to left), and all the other electromagnet all must not; At this moment, the equal decompression of control mouth of second two-way plug-in valve 2 and the 4th two-way plug-in valve 4 (be off-load, communicate with back oil road) makes the second, the 4th two-way plug-in valve be in opening state; The control mouth of first two-way plug-in valve 1 and the 3rd two-way plug-in valve 3 advances to have pressure oil, makes it be in closed condition; The control mouth of the 5th two-way plug-in valve 16a also advances to have pressure oil, makes it be in closed condition; At this moment; Oil hydraulic pump comes oil; Get into and its spool of jack-up from the filler opening of the 4th two-way plug-in valve 4, through the valve body second work oil duct, second working interface (B) get into oil hydraulic motor second hydraulic fluid port primer fluid pressure motor counter-rotating (reaching the work of shaking for a short time for the starting of oscillation of shaking for a short time) with respect to press machine.The inside oil extraction of oil hydraulic motor gets into first working interface (A) through first hydraulic fluid port of oil hydraulic motor; Along the valve body first work oil duct; Get into and its spool of jack-up from the import of second two-way plug-in valve 2, get into the back oil road of valve body, flow back to hydraulic reservoir through the oil return interface (T) of valve body through its outlet.
(5) oil hydraulic motor counter-rotating stall (being the failure of oscillation that shakes for a short time) with respect to road roller
Second electromagnet, 6 dead electricity (its spool is back to meta) of 3-position 4-way solenoid directional control valve; The electromagnet of electrical-controller 18 controls second solenoid directional control valve 7 is delayed time electricly (its spool moves to right); At this moment; The inner oil extraction of oil hydraulic motor gets into valve body first actuator port (A) toward oil hydraulic motor first hydraulic fluid port and works oil duct through the second damping plug 15b along first; Behind second solenoid directional control valve 7, be divided into three strands, one gets into the filler opening of second relief valve 14, and the return opening of second relief valve 14 communicates with the system oil return road; Another strand gets into the control mouth of second two-way plug-in valve 2 toward a filler opening of the 3rd shuttle valve 11; The 3rd stock-traders' know-how the 4th shuttle valve 12 gets into the control mouth of first two-way plug-in valve 1, makes first, second two-way plug-in valve close, thereby increases return oil pressure for the oil return of first hydraulic fluid port of oil hydraulic motor; The pressure of the control mouth of this first, second two-way plug-in valve is set up by second relief valve 14, and the return oil pressure of formation forces electromagnet stall in the time of delay cut-off (with respect to the road roller failure of oscillation that in the time that electrical-controller 18 is set up, shakes for a short time) of second solenoid directional control valve 7 that is reversed in electrical-controller 18 controls of oil hydraulic motor.
(6) oil hydraulic motor is just being changed to being counter-rotating (being equivalent to good the changing for a short time of road roller shakes)
Oil hydraulic motor is just being changed to being counter-rotating; Must be after just changeing stall; Just switching-over is counter-rotating, promptly after first electromagnet, 5 dead electricity by the 3-position 4-way solenoid directional control valve of electrical-controller 18 control, the electromagnet of the 3rd solenoid directional control valve 8 delay time electricly and the time-delay dead electricity after; Make again the 3-position 4-way solenoid directional control valve second electromagnet 6 electric, the just conversion that realizes oil hydraulic motor is to being counter-rotating (being equivalent to good the changing for a short time of road roller shakes).
(7) the oil hydraulic motor inverse transform is to for just changeing (be equivalent to road roller shake for a short time change good)
In like manner; The oil hydraulic motor inverse transform must just commutate to just changeing after the counter-rotating stall to for just changeing; Promptly after 3-position 4-way solenoid directional control valve second electromagnet 6 dead electricity by electrical-controller 18 controls; The electromagnet of second solenoid directional control valve 7 delay time electricly and the time-delay dead electricity after, make again the 3-position 4-way solenoid directional control valve first electromagnet 5 electric, the inverse transform that realizes oil hydraulic motor is to for just changeing (be equivalent to road roller shake for a short time change good).
No matter road roller is in which kind of operating mode work, promptly no matter road roller in shake for a short time work or shake for a short time and change good work of good work or shake for a short time work or good commentaries on classics, if when the pressure of the oil that the oil-feed interface (P) in two logical plug-in type vibrating valves is come in surpasses the set pressure of precursor overflow valve 16b; This precursor overflow valve 16b will open off-load, make the control mouth off-load of the 5th two-way plug-in valve 16a, at this moment; Oil hydraulic pump comes oil; Through the oil-feed interface (P) of valve body, the import that gets into the 5th two-way plug-in valve 16a by oil input channel, and its spool of jack-up; Oil input channel is communicated with, oil hydraulic pump off-load under the set pressure of precursor overflow valve 16b with the valve body back oil road.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to mode of execution.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.

Claims (7)

1. a logical plug-in type vibrating valve comprises
Valve body; Form the plug-in mounting chamber on the said valve body; And the oil-feed interface (P) that is communicated with the oil outlet of oil hydraulic pump; The oil return interface (T) that is communicated with the oil sump tank of hydraulic system, first working interface (A) and second working interface (B) that are communicated with first hydraulic fluid port and second hydraulic fluid port at oil hydraulic motor two ends respectively;
Major loop, said major loop are inserted in the said plug-in mounting chamber of said valve body, comprise by four two-way plug-in valves, and the direction control circuit that the 3-position 4-way solenoid directional control valve constitutes, wherein
First two-way plug-in valve (1) is arranged on the feed flow of past said first working interface (A) of the said oil-feed interface of control (P) between said oil-feed interface (P) and said first working interface (A); The 3rd two-way plug-in valve (3) is arranged between said second working interface (B) and the said oil return interface (T); Control said second working interface (B) towards the liquid that returns between the said oil return interface (T); Said first two-way plug-in valve (1) and said the 3rd two-way plug-in valve (3) constitute good minute loop when together opening; The 4th two-way plug-in valve (4) is arranged on the feed flow of past said second working interface (B) of the said oil-feed interface of control (P) between said oil-feed interface (P) and second working interface (B); Second two-way plug-in valve (2) is arranged between said first working interface (A) and the said oil return interface (T); Control said first working interface (A) towards the liquid that returns between the said oil return interface (T); Said the 4th two-way plug-in valve (4) and said second two-way plug-in valve (2) constitute the branch loop that shakes for a short time when together opening;
First electromagnet (5) of said 3-position 4-way solenoid directional control valve; During second electromagnet (6) dead electricity; The control mouth of said second two-way plug-in valve (2) and said the 4th two-way plug-in valve (4) is feed liquor and closing respectively; Said first two-way plug-in valve (1) and said the 3rd two-way plug-in valve (3) control mouth return liquid and open, and realize good; Said second electromagnet (6) of said 3-position 4-way solenoid directional control valve; During first electromagnet (5) dead electricity; The control mouth of said first two-way plug-in valve (1) and said the 3rd two-way plug-in valve (3) is feed liquor and closing respectively; The control mouth of said second two-way plug-in valve (2) and said the 4th two-way plug-in valve (4) returns liquid respectively and opens, and realizes shaking for a short time; Said first electromagnet (5) of said 3-position 4-way solenoid directional control valve; And said second electromagnet (6) is all during dead electricity; The control mouth of four said two-way plug-in valves all returns liquid and all opens, when realizing that engine idle or road roller do not vibrate, and the unloaded oil return of oil hydraulic pump;
It is characterized in that:
Also comprise failure of oscillation branch loop, said failure of oscillation branch loop is provided with two covers, the good failure of oscillation of a cover control, and a cover is controlled the failure of oscillation that shakes for a short time, wherein
Good failure of oscillation branch loop comprises that being arranged on said the 3rd two-way plug-in valve (3) controls mouth and the intersection point place of said the 4th two-way plug-in valve (4) control mouth and the 3rd solenoid directional control valve (8) between said second working interface (B); And the control mouth place that is arranged on said the 3rd two-way plug-in valve (3), realize that said second electromagnet (6) and said the 3rd solenoid directional control valve (8) replace feed flow toward the control mouth place of said the 3rd two-way plug-in valve (3) or return first shuttle valve (9) of liquid; Be arranged on the control mouth place of said the 4th two-way plug-in valve (4); Realize that said first electromagnet (5) and said the 3rd solenoid directional control valve (8) replace second shuttle valve (10) of feed flow or time liquid toward the control mouth place of said the 4th two-way plug-in valve (4); Wherein said the 3rd solenoid directional control valve (8) when electric; Said second working interface (B) communicates with the control mouth of said the 3rd two-way plug-in valve (3), said the 4th two-way plug-in valve (4) respectively; Make the control mouth feed liquor of said the 3rd two-way plug-in valve (3), said the 4th two-way plug-in valve (4) and close; During said the 3rd solenoid directional control valve (8) dead electricity; Said second working interface (B) blocks with the control mouth of said the 3rd two-way plug-in valve (3), said the 4th two-way plug-in valve (4) respectively, makes the control mouth of said the 3rd two-way plug-in valve (3), said the 4th two-way plug-in valve (4) return liquid and opens;
For a short time the failure of oscillation branch loop that shakes comprises and is arranged on said second two-way plug-in valve (2) control mouthful and the intersection point place of said first two-way plug-in valve (1) control mouth and second solenoid directional control valve (7) between said first working interface (A); And the control mouth place that is arranged on said second two-way plug-in valve (2), realize that said first electromagnet (5) and said second solenoid directional control valve (7) replace feed flow toward the control mouth place of said second two-way plug-in valve (2) or return the 3rd shuttle valve (11) of liquid; Be arranged on the control mouth place of said first two-way plug-in valve (1); Realize that said second electromagnet (6) and said second solenoid directional control valve (7) replace the 4th shuttle valve (12) of feed flow or time liquid toward the control mouth place of said first two-way plug-in valve (1); Wherein said second solenoid directional control valve (7) when electric; Said first working interface (A) communicates with the control mouth of said second two-way plug-in valve (2), said first two-way plug-in valve (1) respectively; Make the control mouth feed liquor of said second two-way plug-in valve (2), said first two-way plug-in valve (1) and close; During said second solenoid directional control valve (7) dead electricity; Said first working interface (A) blocks with the control mouth of said second two-way plug-in valve (2), said first two-way plug-in valve (1) respectively, makes the control mouth of said second two-way plug-in valve (2), said first two-way plug-in valve (1) return liquid and opens.
2. according to claim 1 two logical plug-in type vibrating valves is characterized in that: said good failure of oscillation branch loop comprises that also being arranged on said the 3rd two-way plug-in valve (3) controls mouth and the intersection point place of said the 4th two-way plug-in valve (4) control mouth and first relief valve (13) between the said oil return interface (T); The said failure of oscillation branch loop that shakes for a short time comprises that being arranged on said second two-way plug-in valve (2) control mouthful makes second relief valve (14) between the interface (T) with the intersection point place and the said oil return of said first two-way plug-in valve (1) control mouth.
3. according to claim 2 two logical plug-in type vibrating valves; It is characterized in that: the liquid entering hole place of said 3-position 4-way solenoid directional control valve; The liquid entering hole place of said second solenoid directional control valve (7), the liquid entering hole place of said the 3rd solenoid valve (8) respectively is provided with a damping plug.
4. according to each described two logical plug-in type vibrating valve among the claim 1-3; It is characterized in that: comprise also on the said major loop that one sets up oil pressure that oil-feed interface (P) locates, the safety branch loop (16) of overload protection is provided for the road roller hydraulic vibration control system.
5. according to claim 4 two logical plug-in type vibrating valves; It is characterized in that: said safety branch loop (16) is made up of a precursor overflow valve (16b), the 5th two-way plug-in valve (16a) and two damping plugs; Wherein, The filler opening of said the 5th two-way plug-in valve (16a) is communicated with the said oil-feed interface (P) of valve body, and its oil outlet is communicated with the oil return interface (T) of said valve body, and its control mouthful place is provided with a said damping plug; Draw two oil ducts by said damping plug place; Article one, the filler opening with precursor overflow valve (16b) is communicated with, and second is communicated with said oil-feed interface (P), and on second, also is provided with a said damping plug; The oil outlet of said precursor overflow valve (16b) is communicated with the oil return interface (T) of said valve body.
6. according to each described two logical plug-in type vibrating valve among the claim 1-3, it is characterized in that: the oil return interface (T) of said valve body, said first working interface (A); And the working connection hole of second working interface (B) all is shaped to long waist-shaped hole; Said long waist-shaped hole is by two Line Segment, and two semi-circlees that are arranged on said two Line Segment two ends surround, wherein; The diameter of said semi-circle equals the latus rectum of said two-way plug-in valve; The diameter that the length of said Line Segment adds the above semi-circle is not more than said oil return interface (T), said first working interface (A), and said second working interface (B) hydraulic fluid port screw thread path separately.
7. electrohydraulic control unit with two logical plug-in type vibrating valves described in claim 1-6; It is characterized in that: also comprise the control gear (17) that is arranged on the road roller operator cabin, and be composed of the electrical-controller (18) of controlling various operating mode programs, the wiring terminal on the said electrical-controller (18) respectively with said first electromagnet (5); Said second electromagnet (6); Said second solenoid directional control valve (7), said the 3rd solenoid directional control valve (8) is corresponding to be connected, through operating said control gear (17); Realize the control of said electrical-controller (18), thereby realize the various operating modes of road roller each solenoid directional control valve.
CN2011204162825U 2011-10-27 2011-10-27 Two-way inserting type vibration valve and electrohydraulic control unit Withdrawn - After Issue CN202273936U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204162825U CN202273936U (en) 2011-10-27 2011-10-27 Two-way inserting type vibration valve and electrohydraulic control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204162825U CN202273936U (en) 2011-10-27 2011-10-27 Two-way inserting type vibration valve and electrohydraulic control unit

Publications (1)

Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103089725A (en) * 2011-10-27 2013-05-08 泊姆克(天津)液压有限公司 Two-way plug-in mounting vibrating valve and electric hydraulic control unit
CN103511375A (en) * 2012-06-15 2014-01-15 泊姆克(天津)液压有限公司 Two-way plug-in mounting type vibration control valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103089725A (en) * 2011-10-27 2013-05-08 泊姆克(天津)液压有限公司 Two-way plug-in mounting vibrating valve and electric hydraulic control unit
CN103089725B (en) * 2011-10-27 2015-04-08 泊姆克(天津)液压有限公司 Two-way plug-in mounting vibrating valve and electric hydraulic control unit
CN103511375A (en) * 2012-06-15 2014-01-15 泊姆克(天津)液压有限公司 Two-way plug-in mounting type vibration control valve
CN103511375B (en) * 2012-06-15 2015-09-16 泊姆克(天津)液压有限公司 A kind of two-way plug-in vibration control valve

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