CN103511375A - Two-way plug-in mounting type vibration control valve - Google Patents
Two-way plug-in mounting type vibration control valve Download PDFInfo
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- CN103511375A CN103511375A CN201210198133.5A CN201210198133A CN103511375A CN 103511375 A CN103511375 A CN 103511375A CN 201210198133 A CN201210198133 A CN 201210198133A CN 103511375 A CN103511375 A CN 103511375A
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Abstract
The invention relates to a two-way plug-in mounting type vibration control valve which comprises a valve body and an electric hydraulic control loop, wherein the valve body is inserted into a valve body inserting cavity, and the electric hydraulic control loop is composed of a two-way plug-in mounting type valve, a control cover plate, a two-position two-way hydraulic control direction valve, an overflow valve and the like and controls the operation of a hydraulic motor. The electric hydraulic control loop comprises a direction dividing loop controlling the hydraulic motor to rotate forward or reversely, a dividing loop controlling the hydraulic motor to stop rotating forward or reversely and a dividing loop providing overload protection for forward rotation or reverse rotation of the hydraulic motor. According to the two-way plug-in mounting type vibration control valve, the hydraulic shock can be relieved when a road roller starts vibrating, carries out amplitude of variation and stops vibrating, the peak pressure of a hydraulic system is reduced, and the working reliability and durability of a hydraulic element are improved. Due to the fact that the road roller automatically stops vibrating through hydraulic control, the vibrating stopping time is shortened, the probability that the whole road roller is resonant when the road roller stops vibrating is avoided, and the working quality of the road roller and the comfort of a driver are improved. The whole hydraulic system is simple in structure and small in number of elements, the control performance is improved, and cost is reduced.
Description
Technical field
The present invention relates to a kind of two-way plug-in vibration control valve, specifically, is the two-way plug-in vibration control valve of the control oil hydraulic motor work on a kind of vibratory roller.
Background technique
For reducing costs, the shake unit of current domestic vibratory roller adopt take 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 starting of oscillation, in failure of oscillation process, there is 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, the vibration characteristics when vibration parameters of vibrating wheels is different from its steady operation, while adding vibrating hydraulic motor operations, for carrying, band starts, be easy to, in the road roller starting of oscillation stage, hydraulic system is formed to impacting with high pressure, this instantaneous high pressure is by the pump of giving in hydraulic system, valve, the component such as motor and pipeline brings enormous impact to cause the damage of hydraulic pressure component and pipeline connect loosening and reveal, befouling environment, analyze according to statistics, fault in road roller vibratory hydraulic system more than 60% is because starting of oscillation high pressure causes, rotator inertia due to road roller exciting rotor during failure of oscillation can make failure of oscillation overlong time cause complete machine resonance, will affect the operation quality of road roller and operator's work travelling comfort.
The inventor is authorized patent ZL201120416282.5 " a kind of two-way plug-in vibration control valve and electrohydraulic control unit " once, although reduced preferably the hydraulic shock of road roller when starting of oscillation and shortened the failure of oscillation time, avoided complete machine resonance, but use hydraulic element more in this scheme, hydraulic system is more complicated, also must use the special vibrating controller that price is higher to control the work schedule of three solenoid directional control valves, cause the cost of this scheme higher.
Summary of the invention
For this reason, technical problem to be solved by this invention is two-way plug-in vibration control valve complex structure of the prior art, need the problem that hydraulic element are more, cost of production is higher of using, the two-way plug-in vibration control valve that a kind of hydraulic system is simple, cost of production is lower is provided.
For solving the problems of the technologies described above, a kind of two-way plug-in vibration control valve of the present invention, comprises
Valve body, on described valve body, form plug-in mounting chamber, and the oil-feed interface (P) being communicated with the oil outlet of oil hydraulic pump, the oil return interface (T) being communicated with the oil sump tank of hydraulic system, the first working interface (A) being communicated with the first hydraulic fluid port and second hydraulic fluid port at oil hydraulic motor two ends respectively, and the second working interface (B);
Major loop, described major loop is inserted in the described plug-in mounting chamber of described valve body, comprises by five two-way plug-in valves, and a 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 (P) and described the first working interface (A) and controls described oil-feed interface (P) toward the feed flow of 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), 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 and described the 3rd two-way plug-in valve are together opened, form good minute loop; The 4th two-way plug-in valve is arranged between described oil-feed interface (P) and the second working interface (B) and controls described oil-feed interface (P) toward the feed flow of described the second working interface (B), the second two-way plug-in valve is arranged between described the first working interface (A) and described oil return interface (T), 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 and described the second two-way plug-in valve are together opened, form little Zhen Fen loop;
Failure of oscillation divides loop, and a wherein said failure of oscillation minute 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 minute loop is realized engine idle or road roller and is not vibrated, and the unloaded oil return of oil hydraulic pump;
A good failure of oscillation minute loop comprises that being arranged on described the 3rd two-way plug-in valve controls a mouthful place, control described the 3rd two-way plug-in valve in treating the second two-position two-way hydraulic control directional control valve of opening state or closed condition, be arranged between the control mouth and back oil road of described the 3rd two-way plug-in valve, in setting little Zhen Fen loop, overload protection hydraulic coupling and good failure of oscillation divide the second relief valve of back pressure hydraulic coupling in loop, and the control mouth place that is arranged on described the 4th two-way plug-in valve controls the 4th two-way plug-in valve in treating the second shuttle valve of opening state or closed condition, (going out) the liquid mouth that enters of wherein said the second two-position two-way hydraulic control directional control valve communicates with first actuator port (a) of described 3-position 4-way solenoid directional control valve, controlling mouth communicates with second actuator port (b) of described 3-position 4-way solenoid directional control valve, going out (entering) liquid mouth communicates with described the 3rd two-way plug-in valve control mouthful, two of described the second shuttle valve enter (going out) liquid mouth respectively with described the second working interface (B), and second actuator port (b) of described 3-position 4-way solenoid directional control valve communicates, and goes out (entering) liquid mouth and communicates with described the 4th two-way plug-in valve, the liquid entering hole of described the second relief valve communicates with the control mouth of described the 3rd two-way plug-in valve, and liquid outlet communicates with described back oil road,
The little failure of oscillation minute loop that shakes comprises that being arranged on described the second two-way plug-in valve controls a mouthful place, control described the second two-way plug-in valve in treating the first two-position two-way hydraulic control directional control valve of opening state or closed condition, be arranged between the control mouth and back oil road of described the second two-way plug-in valve, set up in good minute loop the first relief valve of back pressure hydraulic coupling in overload protection hydraulic coupling and the little failure of oscillation minute loop that shakes, and the control mouth place that is arranged on described the first two-way plug-in valve controls the first two-way plug-in valve in treating the first shuttle valve of opening state or closed condition, (going out) the liquid mouth that enters of wherein said the first two-position two-way hydraulic control directional control valve communicates with second actuator port (b) of described 3-position 4-way solenoid directional control valve, controlling mouth communicates with first actuator port (a) of described 3-position 4-way solenoid directional control valve, going out (entering) liquid mouth communicates with described the second two-way plug-in valve control mouthful, two of described the first shuttle valve enter (going out) liquid mouth respectively with described the first working interface (A), and first actuator port (a) of described 3-position 4-way solenoid directional control valve communicates, and goes out (entering) liquid mouth and communicates with described the first two-way plug-in valve, the liquid entering hole of described the first relief valve communicates with the control mouth of described the second two-way plug-in valve, and liquid outlet communicates with described back oil road,
Unloaded oil return divides loop, a described unloaded oil return minute loop comprises the 5th two-way plug-in valve, and be arranged on described the 5th two-way plug-in valve and control a mouthful place, control described the 5th two-way plug-in valve in treating the 3rd shuttle valve of opening state or closed condition, the liquid entering hole of described the 5th two-way plug-in valve communicates with oil-feed interface (P), and liquid outlet communicates with oil return interface (T); Two liquid entering holes of described the 3rd shuttle valve respectively the first actuator port (a) and second actuator port (b) of described 3-position 4-way solenoid directional control valve communicate, and the liquid outlet of described the 3rd shuttle valve communicates with the control mouth of described the 5th two-way plug-in valve;
The first electromagnet of described 3-position 4-way solenoid directional control valve 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 are controlled mouthful time liquid and are opened, and realize good;
The described first electromagnet dead electricity of described 3-position 4-way solenoid directional control valve, described the second two-position two-way hydraulic control directional control valve is controlled mouthful time liquid because of it and is truncated, 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 is truncated, the liquid flowing out from described second working interface (B) of described oil hydraulic motor pass through 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 (B) is at described the 3rd two-way plug-in valve, described the 4th two-way plug-in valve, described the second shuttle valve place forms to be stopped up, and under the set pressure of described the second relief valve, form return oil pressure and force the stall of oil hydraulic motor forward, realize good failure of oscillation,
The second electromagnet of described 3-position 4-way solenoid directional control valve obtains electric, the control mouth of described the 3rd two-way plug-in valve is closed under the set pressure of described the second relief valve, the control mouth feed liquor of described the first two-way plug-in valve and closing, 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;
The described second electromagnet dead electricity of described 3-position 4-way solenoid directional control valve, described the first two-position two-way hydraulic control directional control valve is controlled mouthful time liquid because of it and is truncated, 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 is truncated, the liquid flowing out from described first working interface (A) of described oil hydraulic motor is by described the first shuttle valve, thereby the control end 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 (A) of described oil hydraulic motor is at described the second two-way plug-in valve, described the first two-way plug-in valve, described the first shuttle valve place forms to be stopped up, and form 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,
Described first electromagnet of described 3-position 4-way solenoid directional control valve, and during the equal dead electricity of described the second electromagnet, the control mouth of described the 5th two-way plug-in valve returns liquid and opens, when realizing engine idle or road roller and not vibrating, the unloaded oil return of oil hydraulic pump.
Described the second two-way plug-in valve, described the 3rd two-way plug-in valve are the two-way plug-in valve that spool is provided with damping hole.
The liquid entering hole place of described 3-position 4-way solenoid directional control valve, the control mouth place of five described two-way plug-in valves, the liquid entering hole place of described the first relief valve, the second relief valve is respectively provided with a damping plug.
Described the first two-position two-way hydraulic control directional control valve, described the first relief valve are inserted in the control cover plate of described the second two-way plug-in valve; Described the second two-position two-way hydraulic control directional control valve, described the second relief valve are inserted in the control cover plate of described the 3rd two-way plug-in valve.
The 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 two semi-circlees that are arranged on described two Line Segment two ends surround, 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.
Technique scheme of the present invention has the following advantages compared to existing technology:
1, the present invention adopts the direction of the compositions such as five two-way plug-in valves to control minute loop, failure of oscillation minute loop and safety minute loop, alleviated the hydraulic shock of road roller when starting of oscillation, luffing and failure of oscillation, reduced the surge pressure of hydraulic system, reliability and the durability of hydraulic element work have been improved, shortened the failure of oscillation time, while having avoided failure of oscillation, complete machine produces the possibility of resonance, has improved the operation quality of road roller and driver's comfortable feel; Hydraulic system of the present invention is by three electromagnetic valve of the prior art, become the control by a solenoid valve and two hydraulic control directional control valves, because two hydraulic control directional control valves are that the flow direction of liquid is controlled in system, therefore, without re-using the special vibrating controller that the work schedule of three solenoid directional control valves is controlled, control, reduced cost, in addition also saved the setting of a shuttle valve and a relief valve, make hydraulic system structure of the present invention more simple, cost of production is lower.
2, in the present invention; little back pressure of shaking in process overload protection and good failure of oscillation process shares a relief valve and realizes; good process overload protection and little back pressure of shaking in failure of oscillation process share another relief valve and realize; make the structure of whole hydraulic system compacter simple, the working life of effectively having improved element.
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.
Accompanying drawing explanation
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: 1-the first two-way plug-in valve, 2-the second two-way plug-in valve, 2-1,2-2-damping plug, 2-3-the first relief valve, 2-4-the first two-position two-way hydraulic control directional control valve; 3-the 3rd two-way plug-in valve, 3-1,3-2-the damping plug, 3-3-the second relief valve, 3-4-the second two-position two-way hydraulic control directional control valve; 4-the 4th two-way plug-in valve, 5-the 5th two-way plug-in valve, the first electromagnet of 6-3-position 4-way solenoid directional control valve, the second electromagnet of 7-3-position 4-way solenoid directional control valve; 8-1-the first shuttle valve, 8-2-the second shuttle valve, 8-3-three shuttle valve; 9,9-1,9-2,9-3-damping plug; P-oil-feed interface; T-oil return interface; A-the first working interface; The second actuator port of the first actuator port of B-the second working interface, a-3-position 4-way solenoid directional control valve, b-3-position 4-way solenoid directional control valve.
Embodiment
As shown in Figure 1, a kind of two-way plug-in vibration control valve of the present embodiment, comprises
Valve body, on described valve body, form plug-in mounting chamber, and the oil-feed interface (P) being communicated with the oil outlet of oil hydraulic pump, the oil return interface T being communicated with the oil sump tank of hydraulic system, the the first working interface A being communicated with the first hydraulic fluid port and second hydraulic fluid port at oil hydraulic motor two ends respectively, and the second working interface B;
Major loop, described major loop is inserted in the described plug-in mounting chamber of described valve body, comprises by five two-way plug-in valves, and a 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 controls described oil-feed interface P toward the feed flow of 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, 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 minute loop; The 4th two-way plug-in valve 4 is arranged between described oil-feed interface P and the second working interface B and controls described oil-feed interface P toward the feed flow of 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, 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 little Zhen Fen loop;
Failure of oscillation divides loop, and a wherein said failure of oscillation minute 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 minute loop is realized engine idle or road roller and is not vibrated, and the unloaded oil return of oil hydraulic pump;
A good failure of oscillation minute loop comprises that being arranged on described the 3rd two-way plug-in valve 3 controls a mouthful place, control described the 3rd two-way plug-in valve 3 in treating the second two-position two-way hydraulic control directional control valve 3-4 of opening state or closed condition, be arranged between the control mouth and back oil road of described the 3rd two-way plug-in valve 3, in setting little Zhen Fen loop, overload protection hydraulic coupling and good failure of oscillation divide the second relief valve 3-3 of back pressure hydraulic coupling in loop, and the control mouth place that is arranged on described the 4th two-way plug-in valve 4 controls the 4th two-way plug-in valve 4 in treating the second shuttle valve 8-2 of opening state or closed condition, (going out) the liquid mouth that enters of wherein said the second two-position two-way hydraulic control directional control valve 3-4 communicates with the first actuator port a of described 3-position 4-way solenoid directional control valve, controlling mouth communicates with the second actuator port b of described 3-position 4-way solenoid directional control valve, going out (entering) liquid mouth communicates with described the 3rd two-way plug-in valve 3 controls mouthful, two liquid entering holes of described the second shuttle valve 8-2 respectively with described the second working interface B, and the second actuator port b of described 3-position 4-way solenoid directional control valve communicates, liquid outlet communicates with described the 4th two-way plug-in valve 4, the liquid entering hole of described the second relief valve 3-3 communicates with the control mouth of described the 3rd two-way plug-in valve 3, and liquid outlet communicates with described back oil road, (two actuator ports of 3-position 4-way solenoid directional control valve one side communicate with oil-feed interface P, oil return interface T respectively, and the first actuator port a and the second actuator port b are the actuator port of 3-position 4-way solenoid directional control valve opposite side)
The little failure of oscillation minute loop that shakes comprises that being arranged on described the second two-way plug-in valve 2 controls a mouthful place, control described the second two-way plug-in valve 2 in treating the first two-position two-way hydraulic control directional control valve 2-4 of opening state or closed condition, be arranged between the control mouth and back oil road of described the second two-way plug-in valve 2, set up in good minute loop the first relief valve 2-3 of back pressure hydraulic coupling in overload protection hydraulic coupling and the little failure of oscillation minute loop that shakes, and the control mouth place that is arranged on described the first two-way plug-in valve 1 controls the first two-way plug-in valve 1 in treating the first shuttle valve 8-1 of opening state or closed condition, (going out) the liquid mouth that enters of wherein said the first two-position two-way hydraulic control directional control valve 2-4 communicates with the second actuator port b of described 3-position 4-way solenoid directional control valve, controlling mouth communicates with the first actuator port a of described 3-position 4-way solenoid directional control valve, going out (entering) liquid mouth communicates with described the second two-way plug-in valve 2 controls mouthful, two liquid entering holes of described the first shuttle valve 8-1 respectively with described the first working interface A, and the first actuator port a of described 3-position 4-way solenoid directional control valve communicates, liquid outlet communicates with described the first two-way plug-in valve 1, the liquid entering hole of described the first relief valve 2-3 communicates with the control mouth of described the second two-way plug-in valve 2, and liquid outlet communicates with described back oil road, unloaded oil return divides loop, a described unloaded oil return minute loop comprises the 5th two-way plug-in valve 5, and be arranged on described the 5th two-way plug-in valve 5 and control a mouthful place, control described the 5th two-way plug-in valve 5 in treating the 3rd shuttle valve 8-3 of opening state or closed condition, the liquid entering hole of described the 5th two-way plug-in valve 5 communicates with oil-feed interface P, and liquid outlet communicates with oil return interface T, two liquid entering holes of described the 3rd shuttle valve 8-3 respectively the first actuator port a and the second actuator port b of described 3-position 4-way solenoid directional control valve communicate, the liquid outlet of described the 3rd shuttle valve 8-3 communicates with the control mouth of described the 5th two-way plug-in valve 5, described first electromagnet 6 of described 3-position 4-way solenoid directional control valve, and during described the second electromagnet 7 equal dead electricity, the control mouth of described the 5th two-way plug-in valve 5 returns liquid and opens, the described first working interface A of described oil hydraulic motor, and described the second working interface B is respectively by described the first two-way plug-in valve 1, described the 4th two-way plug-in valve 4, through described the 5th two-way plug-in valve 5, communicate with oil return interface T, when realizing engine idle or road roller and not vibrating, the unloaded oil return of oil hydraulic pump.
The first electromagnet 6 of described 3-position 4-way solenoid directional control valve 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 2-3, 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 first electromagnet 6 dead electricity of described 3-position 4-way solenoid directional control valve, described the second two-position two-way hydraulic control directional control valve 3-4 controls mouthful time liquid because of it and is truncated, 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 3-4 is truncated, the liquid flowing out from described second working interface (B) of described oil hydraulic motor pass through described the second shuttle valve 8-2, 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) is at described the 3rd two-way plug-in valve 3, described the 4th two-way plug-in valve 4, described the second shuttle valve 8-2 place forms to be stopped up, and under the set pressure of described the second relief valve 3-3, form return oil pressure and force the stall of oil hydraulic motor forward, realize good failure of oscillation,
The second electromagnet 7 of described 3-position 4-way solenoid directional control valve 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 3-3, 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 second electromagnet 7 dead electricity of described 3-position 4-way solenoid directional control valve, described the first two-position two-way hydraulic control directional control valve 2-4 controls mouthful time liquid because of it and is truncated, 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 2-4 is truncated, the liquid flowing out from described first working interface (A) of described oil hydraulic motor is by described the first shuttle valve 8-1, thereby the control end 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 described first working interface (A) of described oil hydraulic motor is at described the second two-way plug-in valve 2, described the first two-way plug-in valve 1, described the first shuttle valve 8-1 place forms to be stopped up, and form return oil pressure under the set pressure of described the first relief valve 2-3, force oil hydraulic motor reversion stall, realize the little failure of oscillation that shakes,
Described first electromagnet 6 of described 3-position 4-way solenoid directional control valve, and during described the second electromagnet 7 equal dead electricity, the control mouth of described the 5th two-way plug-in valve 5 returns liquid and opens, when realizing engine idle or road roller and not vibrating, the unloaded oil return of oil hydraulic pump.
In the present embodiment, described the second two-way plug-in valve 2, described the 3rd two-way plug-in valve 3 are preferably the two-way plug-in valve that spool is provided with damping hole.
The liquid entering hole place of described 3-position 4-way solenoid directional control valve, the control mouth place of five described two-way plug-in valves, the liquid entering hole place of described the first relief valve 2-3, the second relief valve 3-3 is respectively provided with a damping plug.
Described the first two-position two-way hydraulic control directional control valve 2-4, described the first relief valve 2-3 are inserted in the control cover plate of described the second two-way plug-in valve 2; Described the second two-position two-way hydraulic control directional control valve 3-4, described the second relief valve 3-3 are inserted in the control cover plate of described the 3rd two-way plug-in valve 3, can make vibration control valve compact structure of the present invention, volume is little, quality is light.
As shown in Figure 2, the oil return interface T of described valve body, described the first working interface A, and second working connection hole corresponding to working interface B be all shaped to long waist-shaped hole, described long waist-shaped hole is by two Line Segment, and two semi-circlees that are arranged on described two Line Segment two ends surround, 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 shape design growth waist-shaped hole in each working connection hole on 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.
The working procedure of two-way plug-in vibration control valve of the present invention:
(1) when engine idle and road roller do not vibrate
The first electromagnet 6 of 3-position 4-way solenoid directional control valve, during the second equal dead electricity of electromagnet 7 (not adhesive of electromagnet), because of the 5th two-way plug-in valve 5, the first two-way plug-in valve 1, the 4th two-way plug-in valve 4 and the first two-position two-way hydraulic control directional control valve 2-4, the control mouth of the second two-position two-way hydraulic control directional control valve 3-4 returns the equal decompression of liquid (off-load), and due to the first two-position two-way hydraulic control directional control valve 2-4, the control mouth of the second two-position two-way hydraulic control directional control valve 3-4 returns liquid decompression (off-load), thereby cause the second two-way plug-in valve 2, the 3rd two-way plug-in valve 3 is closed because control end is separately truncated, the oil of coming in from oil hydraulic pump is via the 5th two-way plug-in valve 5, flow to oil return interface T and flow back to fuel tank, oil hydraulic pump no-load running, meanwhile, due to first working interface (A) of oil hydraulic motor, the hydraulic pressure that the second working interface (B) is located is larger, the first working interface (A), the liquid that the second working interface (B) is located by the first two-way plug-in valve 1, the 4th two-way plug-in valve 4 opened, via the 5th two-way plug-in valve 5, flows back to fuel tank respectively.
(2) oil hydraulic motor forward (being good starting of oscillation and good operating mode work with respect to road roller)
The first electromagnet 6 of 3-position 4-way solenoid directional control valve when electric (its spool moves to right), because of now the 4th two-way plug-in valve 4 controls mouthful, and the control mouth of the second two-position two-way hydraulic control directional control valve 3-4 all communicates with oil input channel, and cause the oil content entering from oil-feed interface (P) not flow to the 4th two-way plug-in valve 4 controls mouthful, and the control mouth of the second two-position two-way hydraulic control directional control valve 3-4, the 4th two-way plug-in valve 4 is closed because controlling a mouthful feed liquor, the second two-position two-way hydraulic control directional control valve 3-4 moves to left because controlling a mouthful feed liquor spool, thereby make the 3rd two-way plug-in valve 3 return liquid decompression in treating opening state (control mouthful be communicated with off-load with back oil road) because of control end.
And the control mouth of while the first two-way plug-in valve 1, and the control mouth of the first two-position two-way hydraulic control directional control valve 2-4 all causes control mouth separately to return liquid decompression because communicating with back oil road, the first two-way plug-in valve 1 is controlled mouthful decompression and in treating opening state, and the first two-position two-way hydraulic control directional control valve 2-4 moves to left because control end decompression makes spool, thereby causes the second two-way plug-in valve 2 to be closed because control end is truncated, now this first, the 3rd two-way plug-in valve is all in treating opening state, and the second two-way plug-in valve 2 and the 4th two-way plug-in valve 4 be in closed condition, and the control mouth of the 5th two-way plug-in valve 5 also enters to have pressure oil, and it is in closed condition, now, oil hydraulic pump is next oily to be entered and its spool of jack-up from the first two-way plug-in valve 1 import, through its outlet, enter the first work oil duct of valve body and the first hydraulic fluid port that the first working interface (A) enters oil hydraulic motor, primer fluid pressure motor forward (being good starting of oscillation and good work with respect to road roller), the internal oil drainage of oil hydraulic motor enters second working interface (B) of valve body through oil hydraulic motor the second hydraulic fluid port, and along the second work oil duct, from the import of the 3rd two-way plug-in valve 3, enter and its spool of jack-up, through its outlet, enter the back oil road of valve body, through oil return interface (T), flow back to hydraulic reservoir.If in this oil hydraulic motor forward process (being the good process of road roller), there is overload in hydraulic system, by the first relief valve 2-3 set pressure off-load.
(3) oil hydraulic motor forward stall (being equivalent to road roller is good failure of oscillation)
The first electromagnet 6 dead electricity (its spool is got back to meta) of 3-position 4-way solenoid directional control valve, now, the control mouth of the second two-position two-way hydraulic control directional control valve 3-4 becomes back liquid by original feed liquor, its spool is moved to right, the 3rd two-way plug-in valve 3 is closed because its control end is truncated, the oil flowing out from the second working interface (B) is by the second shuttle valve 8-2, thereby the control end feed liquor toward the 4th two-way plug-in valve 4 is closed the 4th two-way plug-in valve 4, due to the 3rd two-way plug-in valve 3, the 4th two-way plug-in valve 4, the obstruction of the second shuttle valve 8-2, the liquid flowing out from the second working interface (B) forms return oil pressure under the set pressure of the second relief valve 3-3, the return oil pressure forming forces the stall of oil hydraulic motor forward.If in this oil hydraulic motor forward failure of oscillation process (being the good failure of oscillation process of road roller), there is overload in hydraulic system, by the second relief valve 3-3 set pressure off-load.
(4) oil hydraulic motor reversion (being equivalent to press machine is little shake starting of oscillation and the little operating mode work of shaking)
The second electromagnet 7 of 3-position 4-way solenoid directional control valve obtains electric (its spool moves to left), because of now the first two-way plug-in valve 1 control mouthful, and the control mouth of the first two-position two-way hydraulic control directional control valve 2-4 all communicates with oil input channel, and cause the oil content entering from oil-feed interface (P) not flow to the first two-way plug-in valve 1 control mouthful, and the control mouth of the first two-position two-way hydraulic control directional control valve 2-4, the first two-way plug-in valve 1 is closed because controlling a mouthful feed liquor, the first two-position two-way hydraulic control directional control valve 2-4 moves to right because controlling a mouthful feed liquor spool, thereby make the second two-way plug-in valve 2 return liquid decompression in treating opening state (control mouthful be communicated with off-load with back oil road) because of control end.
And the control mouth of while the 4th two-way plug-in valve 4, and the control mouth of the second two-position two-way hydraulic control directional control valve 3-4 all causes control mouth separately to return liquid decompression because communicating with back oil road, the 4th two-way plug-in valve 4 is controlled mouthful decompressions and in treating opening state, and the second two-position two-way hydraulic control directional control valve 3-4 moves to right because control end decompression makes spool, thereby causes the 3rd two-way plug-in valve 3 to be closed because control end is truncated, now this second, the 4th two-way plug-in valve is all in treating opening state, and the first two-way plug-in valve 1 and the 3rd two-way plug-in valve 3 be in closed condition, and the control mouth of the 5th two-way plug-in valve 5 also enters to have pressure oil, and it is in closed condition, now, oil hydraulic pump is next oily to be entered and its spool of jack-up from the 4th two-way plug-in valve 4 imports, through its outlet, enter the second work oil duct of valve body and the second hydraulic fluid port that the first working interface (B) enters oil hydraulic motor, primer fluid pressure motor reversion (being little shake starting of oscillation and the little work of shaking with respect to road roller), the internal oil drainage of oil hydraulic motor enters first working interface (A) of valve body through oil hydraulic motor the first hydraulic fluid port, and along the first work oil duct, from the import of the second two-way plug-in valve 2, enter and its spool of jack-up, through its outlet, enter the back oil road of valve body, through oil return interface (T), flow back to hydraulic reservoir.If in this oil hydraulic motor Umklapp process (being the little process of shaking of road roller), there is overload in hydraulic system, by the second relief valve 3-3 set pressure off-load.
(5) oil hydraulic motor reversion stall (being equivalent to road roller is the little failure of oscillation that shakes)
The second electromagnet 7 dead electricity (its spool is got back to meta) of 3-position 4-way solenoid directional control valve, now, the control mouth of the first two-position two-way hydraulic control directional control valve 2-4 becomes back liquid by original feed liquor, its spool is moved to right, the second two-way plug-in valve 2 is closed because its control end is truncated, the oil flowing out from the first working interface (A) is by the first shuttle valve 8-1, thereby the control end feed liquor toward the first two-way plug-in valve 1 is closed the first two-way plug-in valve 1, due to the second two-way plug-in valve 2, the first two-way plug-in valve 1, the obstruction of the first shuttle valve 8-1, the liquid flowing out from the first working interface (A) forms return oil pressure under the set pressure of the first relief valve 2-3, the return oil pressure forming forces oil hydraulic motor reversion stall.If in this oil hydraulic motor reversion stalling (being the little failure of oscillation process of shaking of road roller), there is overload in hydraulic system, by the first relief valve 2-3 set pressure off-load.
(6) oil hydraulic motor forward commutation is reversion (be equivalent to road roller good change little shaking)
Oil hydraulic motor forward commutation is reversion, must be after forward stall, and just commutation is for reversing (be equivalent to road roller good change little shaking).
(7) oil hydraulic motor inverse transform to for forward (be equivalent to road roller little shake change good)
In like manner, oil hydraulic motor inverse transform is to being forward, must be after reversion stall, just commutation be forward (be equivalent to road roller little shake change good).
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 exhaustive without also giving all mode of executions.And the apparent variation of being extended out thus or change are still among the protection domain in the invention.
Claims (5)
1. a two-way plug-in vibration control valve, comprises
Valve body, on described valve body, form plug-in mounting chamber, and the oil-feed interface (P) being communicated with the oil outlet of oil hydraulic pump, the oil return interface (T) being communicated with the oil sump tank of hydraulic system, the first working interface (A) being communicated with the first hydraulic fluid port and second hydraulic fluid port at oil hydraulic motor two ends respectively, and the second working interface (B);
Major loop, described major loop is inserted in the described plug-in mounting chamber of described valve body, comprises by five two-way plug-in valves, and a 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 controls described oil-feed interface (P) toward the feed flow of 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), 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 minute loop; The 4th two-way plug-in valve (4) is arranged between described oil-feed interface (P) and the second working interface (B) and controls described oil-feed interface (P) toward the feed flow of 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), 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 little Zhen Fen loop;
Failure of oscillation divides loop, and a wherein said failure of oscillation minute 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 minute 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:
A good failure of oscillation minute loop comprises that being arranged on described the 3rd two-way plug-in valve (3) controls a mouthful place, control described the 3rd two-way plug-in valve (3) in treating the second two-position two-way hydraulic control directional control valve (3-4) of opening state or closed condition, be arranged between the control mouth and back oil road of described the 3rd two-way plug-in valve (3), in setting little Zhen Fen loop, overload protection hydraulic coupling and good failure of oscillation divide second relief valve (3-3) of back pressure hydraulic coupling in loop, and the control mouth place that is arranged on described the 4th two-way plug-in valve (4) controls the 4th two-way plug-in valve (4) in treating second shuttle valve (8-2) of opening state or closed condition, (going out) the liquid mouth that enters of wherein said the second two-position two-way hydraulic control directional control valve (3-4) communicates with first actuator port (a) of described 3-position 4-way solenoid directional control valve, controlling mouth communicates with second actuator port (b) of described 3-position 4-way solenoid directional control valve, going out (entering) liquid mouth communicates with described the 3rd two-way plug-in valve (3) control mouthful, two liquid entering holes of described the second shuttle valve (8-2) respectively with described the second working interface (B), and second actuator port (b) of described 3-position 4-way solenoid directional control valve communicates, liquid outlet communicates with described the 4th two-way plug-in valve (4), the liquid entering hole of described the second relief valve (3-3) communicates with the control mouth of described the 3rd two-way plug-in valve (3), and liquid outlet communicates with described back oil road,
The little failure of oscillation minute loop that shakes comprises that being arranged on described the second two-way plug-in valve (2) controls a mouthful place, control described the second two-way plug-in valve (2) in treating the first two-position two-way hydraulic control directional control valve (2-4) of opening state or closed condition, be arranged between the control mouth and back oil road of described the second two-way plug-in valve (2), set up in good minute loop first relief valve (2-3) of back pressure hydraulic coupling in overload protection hydraulic coupling and the little failure of oscillation minute loop that shakes, and the control mouth place that is arranged on described the first two-way plug-in valve (1) controls the first two-way plug-in valve (1) in treating first shuttle valve (8-1) of opening state or closed condition, (going out) the liquid mouth that enters of wherein said the first two-position two-way hydraulic control directional control valve (2-4) communicates with second actuator port (b) of described 3-position 4-way solenoid directional control valve, controlling mouth communicates with first actuator port (a) of described 3-position 4-way solenoid directional control valve, going out (entering) liquid mouth communicates with described the second two-way plug-in valve (2) control mouthful, two liquid entering holes of described the first shuttle valve (8-1) respectively with described the first working interface (A), and first actuator port (a) of described 3-position 4-way solenoid directional control valve communicates, liquid outlet communicates with described the first two-way plug-in valve (1), the liquid entering hole of described the first relief valve (2-3) communicates with the control mouth of described the second two-way plug-in valve (2), and liquid outlet communicates with described back oil road,
Unloaded oil return divides loop, a described unloaded oil return minute loop comprises the 5th two-way plug-in valve (5), and be arranged on described the 5th two-way plug-in valve (5) and control a mouthful place, control described the 5th two-way plug-in valve (5) in treating the 3rd shuttle valve (8-3) of opening state or closed condition, the liquid entering hole of described the 5th two-way plug-in valve (5) communicates with oil-feed interface (P), and liquid outlet communicates with oil return interface (T); Two liquid entering holes of described the 3rd shuttle valve (8-3) respectively the first actuator port (a) and second actuator port (b) of described 3-position 4-way solenoid directional control valve communicate, and the liquid outlet of described the 3rd shuttle valve (8-3) communicates with the control mouth of described the 5th two-way plug-in valve (5);
First electromagnet (6) of described 3-position 4-way solenoid directional control valve 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 (2-3), 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 the first electromagnet (6) dead electricity of described 3-position 4-way solenoid directional control valve, described the second two-position two-way hydraulic control directional control valve (3-4) is controlled mouthful time liquid because of it and is truncated, 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 (3-4) is truncated, the liquid flowing out from described second working interface (B) of described oil hydraulic motor pass through described the second shuttle valve (8-2), 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) is at described the 3rd two-way plug-in valve (3), described the 4th two-way plug-in valve (4), described the second shuttle valve (8-2) is located to form and is stopped up, and under the set pressure of described the second relief valve (3-3), form return oil pressure and force the stall of oil hydraulic motor forward, realize good failure of oscillation,
Second electromagnet (7) of described 3-position 4-way solenoid directional control valve 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 (3-3), 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 the second electromagnet (7) dead electricity of described 3-position 4-way solenoid directional control valve, described the first two-position two-way hydraulic control directional control valve (2-4) is controlled mouthful time liquid because of it and is truncated, 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 (2-4) is truncated, the liquid flowing out from described first working interface (A) of described oil hydraulic motor is by described the first shuttle valve (8-1), toward described the first two-way plug-in valve (1) thus control end 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 is at described the second two-way plug-in valve (2), described the first two-way plug-in valve (1), described the first shuttle valve (8-1) is located to form and is stopped up, and form return oil pressure under the set pressure of described the first relief valve (2-3), force oil hydraulic motor reversion stall, realize the little failure of oscillation that shakes,
Described first electromagnet (6) of described 3-position 4-way solenoid directional control valve, and described the second electromagnet (7) is all during dead electricity, the control mouth of described the 5th two-way plug-in valve (5) returns liquid and 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: described the second two-way plug-in valve (2), described the 3rd two-way plug-in valve (3) are the two-way plug-in valve that spool is provided with damping hole.
3. two-way plug-in vibration control valve according to claim 2, it is characterized in that: the liquid entering hole place of described 3-position 4-way solenoid directional control valve, the control mouth place of five described two-way plug-in valves, the liquid entering hole place of described the first relief valve (2-3), the second relief valve (3-3) is respectively provided with a damping plug.
4. according to the two-way plug-in vibration control valve described in claim 1-3 any one, it is characterized in that: described the first two-position two-way hydraulic control directional control valve (2-4), described the first relief valve (2-3) are inserted in the control cover plate of described the second two-way plug-in valve (2); Described the second two-position two-way hydraulic control directional control valve (3-4), described the second relief valve (3-3) are inserted in the control cover plate of described the 3rd two-way plug-in valve (3).
5. two-way plug-in vibration control valve according to claim 3, it is characterized in that: the 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 two semi-circlees that are arranged on described two Line Segment two ends surround, 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.
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| CN201210198133.5A CN103511375B (en) | 2012-06-15 | 2012-06-15 | A kind of two-way plug-in vibration control valve |
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| CN201210198133.5A CN103511375B (en) | 2012-06-15 | 2012-06-15 | A kind of two-way plug-in vibration control valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN105545857A (en) * | 2016-02-02 | 2016-05-04 | 泊姆克(天津)液压有限公司 | Novel two-way insert type oscillation control valve |
| CN108223479A (en) * | 2018-01-31 | 2018-06-29 | 邹城市益凯德液压有限公司 | The high flow manual reversal valve of included overload protection |
| CN108547817A (en) * | 2018-07-02 | 2018-09-18 | 北京华海基业机械设备有限公司 | Two-way repid cut-off valve |
| CN109931314A (en) * | 2019-03-22 | 2019-06-25 | 中国铁建重工集团有限公司 | Hydraulic system |
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| US20070125226A1 (en) * | 2005-11-22 | 2007-06-07 | Kobelco Construction Machinery Co., Ltd | Working machine |
| CN202273936U (en) * | 2011-10-27 | 2012-06-13 | 泊姆克(天津)液压有限公司 | Two-way inserting type vibration valve and electrohydraulic control unit |
| CN202811584U (en) * | 2012-06-15 | 2013-03-20 | 泊姆克(天津)液压有限公司 | Two-way cartridge-type oscillation control valve |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070125226A1 (en) * | 2005-11-22 | 2007-06-07 | Kobelco Construction Machinery Co., Ltd | Working machine |
| CN202273936U (en) * | 2011-10-27 | 2012-06-13 | 泊姆克(天津)液压有限公司 | Two-way inserting type vibration valve and electrohydraulic control unit |
| CN202811584U (en) * | 2012-06-15 | 2013-03-20 | 泊姆克(天津)液压有限公司 | Two-way cartridge-type oscillation control valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105545857A (en) * | 2016-02-02 | 2016-05-04 | 泊姆克(天津)液压有限公司 | Novel two-way insert type oscillation control valve |
| CN108223479A (en) * | 2018-01-31 | 2018-06-29 | 邹城市益凯德液压有限公司 | The high flow manual reversal valve of included overload protection |
| CN108223479B (en) * | 2018-01-31 | 2024-03-29 | 山东益凯德液压股份有限公司 | Large-flow manual reversing valve with overload protection |
| CN108547817A (en) * | 2018-07-02 | 2018-09-18 | 北京华海基业机械设备有限公司 | Two-way repid cut-off valve |
| CN109931314A (en) * | 2019-03-22 | 2019-06-25 | 中国铁建重工集团有限公司 | Hydraulic system |
| CN109931314B (en) * | 2019-03-22 | 2024-05-14 | 中国铁建重工集团股份有限公司 | Hydraulic system |
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| CN103511375B (en) | 2015-09-16 |
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