CN104728199A - Multi-way valve, multi-way valve system and engineering machinery - Google Patents
Multi-way valve, multi-way valve system and engineering machinery Download PDFInfo
- Publication number
- CN104728199A CN104728199A CN201310701470.6A CN201310701470A CN104728199A CN 104728199 A CN104728199 A CN 104728199A CN 201310701470 A CN201310701470 A CN 201310701470A CN 104728199 A CN104728199 A CN 104728199A
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- valve
- way
- way valve
- multiway
- selector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to the technical field of engineering machinery and particularly discloses a multi-way valve, a multi-way valve system and engineering machinery. The multi-way valve comprises a multi-way valve element, a first one-way throttling valve and a second one-way throttling valve. The first one-way throttling valve, the multi-way valve element and the second one-way throttling valve are sequentially communicated through an oil path. The oil path between the first one-way throttling valve and the second one-way throttling valve can drive the multi-way valve element to move to enable the multi-way valve element to control flow combination and flow diversion of the multi-way valve. The multi-way valve system comprises the multi-way valve. The engineering machinery comprises the multi-way valve system. The multi-way valve controls speed of fluid flowing through the multi-way valve element through the first one-way valve and the second one-way valve to reduce the moving speed of the multi-way valve element during flow combination and diversion of the multi-way valve and further eliminate impact of fluid pressure generated at the starting moment.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of multi-way valve, there is the multi-way valve system of this multi-way valve and there is the engineering machinery of this multi-way valve system.
Background technique
Collaborating with the advantage of shunting in the hydraulic system of engineering machinery in multi-way valve valve is exactly the heating alleviating valve body, and promote the working efficiency of individual part, during manipulation, action is lightly sensitive, aobvious oppressiveness etc.
In prior art, all adopt valve core of multiway valve to collaborate in the hydraulic system of a lot of engineering machinery and shunt the function cut off, being communicated with oil circuit by the movement of spool and realizing interflow or cut off oil circuit realizing shunting.But, if when multi-way valve interflow is with shunting, the travelling speed of spool is too fast, multi-way valve will be made to collaborate to complete at short notice with shunting, interflow starts with shunting and produces huge fluid pressure instantaneously and impact, and very easily damages the relevant oil circuit in multi-way valve, valve core of multiway valve and system.
Summary of the invention
(1) technical problem that will solve
The object of this invention is to provide a kind of multi-way valve, to overcome because spool travelling speed is too fast when multi-way valve in prior art collaborates and shunts, the interflow of causing starts the excessive problem of instantaneous liquid compression shock with shunting.
(2) technological scheme
In order to solve the problems of the technologies described above, the invention provides a kind of multi-way valve, comprise valve core of multiway valve, the first one-way throttle valve and the second one-way throttle valve; Described first one-way throttle valve, valve core of multiway valve are communicated with by oil circuit successively with the second one-way throttle valve; Oil circuit between described first one-way throttle valve and the second one-way throttle valve can drive described valve core of multiway valve to move, with the interflow and the shunting that make described valve core of multiway valve control described multi-way valve.
Preferably, described valve core of multiway valve is pointed in the direction of the one-way valve of described first one-way throttle valve, and described valve core of multiway valve is pointed in the direction of the individual event valve of described second one-way throttle valve.
Preferably, described multi-way valve also comprises the first selector valve, and described first selector valve is communicated with by oil circuit with described second one-way throttle valve, and described first selector valve has two contrary directions.
Preferably, described first one-way throttle valve, valve core of multiway valve, the second one-way throttle valve are communicated with by circulating oil path with the first selector valve.
Preferably, spring is provided with between the inwall of described valve core of multiway valve and described multi-way valve, described spring is located at the side of described valve core of multiway valve near described first one-way throttle valve, and when described spring is in normal state, described valve core of multiway valve controls described multi-way valve interflow.
Present invention also offers a kind of multi-way valve system, comprise described multi-way valve and the first oil pump, the second oil pump and fuel tank, the all oil suctions from described fuel tank of described first oil pump and the second oil pump, described first oil pump is all communicated with by oil circuit with described multi-way valve with the second oil pump, and described valve core of multiway valve can control interflow and the shunting of oil circuit between described first oil pump and the second oil pump in described multi-way valve.
Preferably, described multi-way valve system also comprises the second selector valve and the 3rd selector valve; Described second selector valve is communicated with by oil circuit with the first selector valve with described first oil pump respectively, and described second selector valve can start signal oil sources to described first selector valve, to make described first selector valve commutation; Described 3rd selector valve is communicated with by oil circuit with the first selector valve with described second oil pump respectively, and described 3rd selector valve can start signal oil sources to described first selector valve, moves to make described valve core of multiway valve.
Present invention also offers a kind of engineering machinery, comprise described multi-way valve system.
Preferably, described engineering machinery is wheeled crane.
Or described engineering machinery is concrete mixer.
(3) beneficial effect
Multi-way valve of the present invention arranges the first one-way throttle valve and the second one-way throttle valve at the two ends of valve core of multiway valve; the liquid speed of the oil circuit of valve core of multiway valve is crossed by the first one-way throttle valve and the second one-way throttle valve control flow check; the movement velocity of valve core of multiway valve during to slow down multi-way valve interflow and to shunt; thus eliminate the hydrodynamic pressure impact starting moment; effectively protect multi-way valve, valve core of multiway valve and relevant oil circuit; simultaneously; multi-way valve of the present invention is rational in infrastructure; cost is lower; be applicable to various hydraulic system, there is very strong versatility and applicability.
Accompanying drawing explanation
Fig. 1 is the oil circuit connection diagram of the multi-way valve system of the embodiment of the present invention; .
In figure, 1: the first one-way throttle valve; 2: valve core of multiway valve; 3: the second one-way throttle valves; 4: the first selector valves; 5: the second selector valves; 3: the three selector valves; 7: the first oil pumps; 8: the second oil pumps.
Embodiment
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
In describing the invention, it should be noted that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
As shown in Figure 1, the multi-way valve system of the present embodiment comprises: multi-way valve, the second selector valve 5, the 3rd selector valve 3, first oil pump 7, second oil pump 8 and fuel tank; Wherein, multi-way valve comprises: the first one-way throttle valve 1, valve core of multiway valve 2, second one-way throttle valve 3 and the first selector valve 4; Valve core of multiway valve 2 is positioned at the inside of described multi-way valve, for controlling interflow and the shunting of described multi-way valve.
First one-way throttle valve 1 and the second one-way throttle valve 3 are positioned at the two ends of valve core of multiway valve 2, and the first one-way throttle valve 1, valve core of multiway valve 2, second one-way throttle valve 3 are communicated with by circulating oil path successively with the first selector valve 4, oil circuit between first one-way throttle valve 1 and the second one-way throttle valve 3 can drive valve core of multiway valve 2 to move, with the interflow and the shunting that make valve core of multiway valve 2 control described multi-way valve, valve core of multiway valve 2 is pointed in the direction of the one-way valve of the first one-way throttle valve 1, valve core of multiway valve 2 is pointed in the direction of the one-way valve of the second one-way throttle valve 3, first selector valve 4 has two contrary directions, its left end is for pointing to valve core of multiway valve 2, the direction of its right-hand member is contrary with the direction of left end, spring is provided with between the inwall of valve core of multiway valve 2 and described multi-way valve, described spring is located at the side of valve core of multiway valve 2 near the first one-way throttle valve 1, when described spring is in normal state, valve core of multiway valve 2 controls described multi-way valve interflow.
First oil pump 7 and all oil suctions from described fuel tank of the second oil pump 8, then to whole hydraulic system fuel feeding, first oil pump 7 is all communicated with by oil circuit with described multi-way valve with the second oil pump 8, and valve core of multiway valve 2 can control interflow and the shunting of oil circuit between the first oil pump 7 and the second oil pump 8 in described multi-way valve; Second selector valve 5 is communicated with by oil circuit with the first selector valve 4 with the first oil pump 7 respectively, second selector valve 5 can start signal oil sources to the first selector valve 4, commutate to make the first selector valve 4,3rd selector valve 6 is communicated with by oil circuit with the first selector valve 4 with the second oil pump 8 respectively, 3rd selector valve 6 can start signal oil sources to the first selector valve 4, moves to make valve core of multiway valve 2.
The working principle of the multi-way valve system of the present embodiment is: when described multi-way valve is in interflow state, the right-hand member of the first selector valve 4 is in running order (namely direction is downward), when there being a single movement in the second selector valve 5 and the 3rd selector valve 6, the inner obstructed excess pressure oil of one-way valve (i.e. the signal oil sources of the 3rd selector valve 6 transmission) of the second one-way throttle valve 3, the throttle valve work of the second one-way throttle valve 3, but the first one-way throttle valve 1, valve core of multiway valve 2, second one-way throttle valve 3 is communicated with by circulating oil path successively with the inside of the first one-way valve 4, and described circulating oil path is communicated with fuel tank, now, valve core of multiway valve 2 is positioned at the below of described multi-way valve under the elastic reaction of described spring, oil circuit between first oil pump 7 and the second oil pump 8 is communicated with (namely in Fig. 1, P1 hydraulic fluid port is communicated with P2 hydraulic fluid port), this working state is exactly interflow in so-called multi-way valve valve, in valve, interflow can promote the working efficiency of individual part, heating can be alleviated again, when the second selector valve 5 and the action simultaneously of the 3rd selector valve 6, first selector valve 4 left end under the effect of the signal oil sources of the second selector valve 5 in running order (namely direction upwards), now, the signal oil sources coming from the 3rd selector valve 6 acts on the lower end surface of valve core of multiway valve 2 by the second one-way throttle valve 3, force in valve core of multiway valve 2 and move, cut off the oil circuit (namely in Fig. 1, P1 hydraulic fluid port and P2 hydraulic fluid port disconnect) between the first oil pump 7 and the second oil pump 8, force the first oil pump 7 and the second oil pump 8 to work independently, this working state is so-called SHUNT state.
In above-mentioned working principle, valve core of multiway valve 2 has two actions, one is be operated in one end under the elastic acting force of described spring, two is be operated in the other end under the effect of pressure oil, these two actions all relate to the motion of valve core of multiway valve 2, this time the key of invention is exactly be arranged on two one-way throttle valves added at valve core of multiway valve 2 two ends, i.e. the first one-way throttle valve 1 and the second one-way throttle valve 3.When overcoming described spring under the effect of valve core of multiway valve 2 at pressure oil to (pressure oil to act on rapidly the bottom of valve core of multiway valve 2 by the one-way valve in the second one-way valve throttle valve 3) on another during end motion, due to the damping hole of the throttle valve of the first one-way throttle valve 1, valve core of multiway valve 2 is forced slowly to move upward, now, oil circuit between first oil pump 7 and the second oil pump 8 is slowly cut off by valve core of multiway valve 2, and hydrodynamic pressure when eliminating shunting impacts; In like manner, valve core of multiway valve 2 one end removes pressure oil, valve core of multiway valve 2 is downward end motion under the elastic acting force of described spring, due to the damping hole of the throttle valve of the second one-way throttle valve 3, valve core of multiway valve 2 can be made slowly to move downward, now, the oil circuit between the first oil pump 7 and the second oil pump 8 is slowly communicated with, and hydrodynamic pressure when eliminating interflow impacts.
Multi-way valve system of the present invention arranges the first one-way throttle valve and the second one-way throttle valve at the two ends of valve core of multiway valve, the liquid speed of the oil circuit of valve core of multiway valve is crossed by the first one-way throttle valve and the second one-way throttle valve control flow check, the movement velocity of multi-way valve flow valve core during to slow down multi-way valve interflow and to shunt, thus eliminate the hydrodynamic pressure impact starting moment, effectively protect multi-way valve, valve core of multiway valve and relevant oil circuit, simultaneously, multi-way valve system of the present invention is rational in infrastructure, cost is lower, be applicable to various hydraulic system, there is very strong versatility and applicability.
Present invention also offers a kind of engineering machinery, described engineering machinery comprises described multi-way valve system, described engineering machinery can for wheeled crane, crawler crane, concrete mixer or other there is the similar engineering machinery of hydraulic system.
Embodiments of the invention provide in order to example with for the purpose of describing, and are not exhaustively or limit the invention to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (10)
1. a multi-way valve, is characterized in that, comprises valve core of multiway valve, the first one-way throttle valve and the second one-way throttle valve; Described first one-way throttle valve, valve core of multiway valve are communicated with by oil circuit successively with the second one-way throttle valve; Oil circuit between described first one-way throttle valve and the second one-way throttle valve can drive described valve core of multiway valve to move, with the interflow and the shunting that make described valve core of multiway valve control described multi-way valve.
2. multi-way valve according to claim 1, is characterized in that, described valve core of multiway valve is pointed in the direction of the one-way valve of described first one-way throttle valve, and described valve core of multiway valve is pointed in the direction of the individual event valve of described second one-way throttle valve.
3. multi-way valve according to claim 2, is characterized in that, described multi-way valve also comprises the first selector valve, and described first selector valve is communicated with by oil circuit with described second one-way throttle valve, and described first selector valve has two contrary directions.
4. multi-way valve according to claim 3, is characterized in that, described first one-way throttle valve, valve core of multiway valve, the second one-way throttle valve are communicated with by circulating oil path with the first selector valve.
5. multi-way valve system according to claim 4, it is characterized in that, spring is provided with between the inwall of described valve core of multiway valve and described multi-way valve, described spring is located at the side of described valve core of multiway valve near described first one-way throttle valve, when described spring is in normal state, described valve core of multiway valve controls described multi-way valve interflow.
6. a multi-way valve system, it is characterized in that, comprise the multi-way valve in claim 1-5 described in any one and the first oil pump, the second oil pump and fuel tank, the all oil suctions from described fuel tank of described first oil pump and the second oil pump, described first oil pump is all communicated with by oil circuit with described multi-way valve with the second oil pump, and described valve core of multiway valve can control interflow and the shunting of oil circuit between described first oil pump and the second oil pump in described multi-way valve.
7. multi-way valve system according to claim 6, is characterized in that, described multi-way valve system also comprises the second selector valve and the 3rd selector valve; Described second selector valve is communicated with by oil circuit with the first selector valve with described first oil pump respectively, and described second selector valve can start signal oil sources to described first selector valve, to make described first selector valve commutation; Described 3rd selector valve is communicated with by oil circuit with the first selector valve with described second oil pump respectively, and described 3rd selector valve can start signal oil sources to described first selector valve, moves to make described valve core of multiway valve.
8. an engineering machinery, is characterized in that, comprises the multi-way valve system described in claim 6 or 7.
9. engineering machinery according to claim 8, is characterized in that, described engineering machinery is wheeled crane.
10. engineering machinery according to claim 8, is characterized in that, described engineering machinery is concrete mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310701470.6A CN104728199B (en) | 2013-12-18 | 2013-12-18 | Banked direction control valves, multi-way valve system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310701470.6A CN104728199B (en) | 2013-12-18 | 2013-12-18 | Banked direction control valves, multi-way valve system and engineering machinery |
Publications (2)
| Publication Number | Publication Date |
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| CN104728199A true CN104728199A (en) | 2015-06-24 |
| CN104728199B CN104728199B (en) | 2017-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310701470.6A Active CN104728199B (en) | 2013-12-18 | 2013-12-18 | Banked direction control valves, multi-way valve system and engineering machinery |
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Citations (7)
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| US3964518A (en) * | 1974-10-02 | 1976-06-22 | Robert Bosch G.M.B.H. | Electrohydraulic control unit |
| CN2031406U (en) * | 1988-03-02 | 1989-01-25 | 北京第三纺织机械厂 | Hydraulic top-roller rounding machine |
| CN2610133Y (en) * | 2003-03-14 | 2004-04-07 | 柯坚 | Quantitative variable confluent system of loader |
| CN201240063Y (en) * | 2008-03-10 | 2009-05-20 | 李世发 | Hydraulic cushion type high pressure homogenizer |
| JP2010031803A (en) * | 2008-07-30 | 2010-02-12 | Toyota Motor Corp | Control device of multi-cylinder internal combustion engine |
| CN201891142U (en) * | 2010-10-16 | 2011-07-06 | 厦门厦工机械股份有限公司 | Improved structure of hydraulic system of loader |
| CN202416432U (en) * | 2012-01-13 | 2012-09-05 | 上海寅翔液压技术有限公司 | Sudden stop buffering device for excavator |
-
2013
- 2013-12-18 CN CN201310701470.6A patent/CN104728199B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3964518A (en) * | 1974-10-02 | 1976-06-22 | Robert Bosch G.M.B.H. | Electrohydraulic control unit |
| CN2031406U (en) * | 1988-03-02 | 1989-01-25 | 北京第三纺织机械厂 | Hydraulic top-roller rounding machine |
| CN2610133Y (en) * | 2003-03-14 | 2004-04-07 | 柯坚 | Quantitative variable confluent system of loader |
| CN201240063Y (en) * | 2008-03-10 | 2009-05-20 | 李世发 | Hydraulic cushion type high pressure homogenizer |
| JP2010031803A (en) * | 2008-07-30 | 2010-02-12 | Toyota Motor Corp | Control device of multi-cylinder internal combustion engine |
| CN201891142U (en) * | 2010-10-16 | 2011-07-06 | 厦门厦工机械股份有限公司 | Improved structure of hydraulic system of loader |
| CN202416432U (en) * | 2012-01-13 | 2012-09-05 | 上海寅翔液压技术有限公司 | Sudden stop buffering device for excavator |
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| CN104728199B (en) | 2017-12-08 |
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Effective date of registration: 20200929 Address after: No.202 Xuanfu street, Xuanhua District, Zhangjiakou, Hebei Province Patentee after: Hebei Leisa Heavy Construction Machinery Co., Ltd Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
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