CN104728199B - Banked direction control valves, multi-way valve system and engineering machinery - Google Patents
Banked direction control valves, multi-way valve system and engineering machinery Download PDFInfo
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- CN104728199B CN104728199B CN201310701470.6A CN201310701470A CN104728199B CN 104728199 B CN104728199 B CN 104728199B CN 201310701470 A CN201310701470 A CN 201310701470A CN 104728199 B CN104728199 B CN 104728199B
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- valve
- multiway
- control valves
- direction control
- way throttle
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Classifications
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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 present invention relates to technical field of engineering machinery, specifically discloses a kind of banked direction control valves, multi-way valve system and engineering machinery.The banked direction control valves includes valve core of multiway valve, the first one-way throttle valve and the second one-way throttle valve, first one-way throttle valve, valve core of multiway valve and the second one-way throttle valve are sequentially communicated by oil circuit, oil circuit between first one-way throttle valve and the second one-way throttle valve can drive the valve core of multiway valve to move, so that the valve core of multiway valve controls interflow and the shunting of the banked direction control valves.The multi-way valve system includes the banked direction control valves.The engineering machinery includes the multi-way valve system.The banked direction control valves of the present invention crosses the fluid velocity of the oil circuit of valve core of multiway valve by the first one-way throttle valve and the second one-way throttle valve controlling stream, to slow down banked direction control valves interflow and the movement velocity of valve core of multiway valve during shunting, so as to eliminate the Fluid pressure impact for starting moment.
Description
Technical field
The present invention relates to engineering machinery field, more particularly to a kind of banked direction control valves, have the banked direction control valves multi-way valve system and
Engineering machinery with the multi-way valve system.
Background technology
Advantage of the interflow with shunting in the hydraulic system of engineering machinery is exactly to mitigate the heating of valve body in banked direction control valves valve, is carried
The operating efficiency of individual part is risen, action is light and handy sensitive during manipulation, not aobvious oppressiveness etc..
In the prior art, the work(with shunting cut-out is all collaborated using valve core of multiway valve in the hydraulic system of many engineering machinery
Can, realize that interflow or cut-out oil circuit realize shunting by the movement of valve element to connect oil circuit.But if collaborate in banked direction control valves
During with shunting, the translational speed of valve element is too fast, banked direction control valves interflow will be made to be completed in a short time with shunting, interflow is opened with shunting
Dynamic moment produces huge fluid pressure impact, easily damages banked direction control valves, valve core of multiway valve oil circuit related in system.
The content of the invention
(1) technical problems to be solved
It is an object of the invention to provide a kind of banked direction control valves, with overcome in the prior art banked direction control valves interflow with during shunting due to valve
Core translational speed is too fast, and caused interflow starts the problem of instantaneous liquid compression shock is excessive with shunting.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of banked direction control valves, including valve core of multiway valve, the first unidirectional section
Flow valve and the second one-way throttle valve；First one-way throttle valve, valve core of multiway valve and the second one-way throttle valve by oil circuit according to
Secondary connection；Oil circuit between first one-way throttle valve and the second one-way throttle valve can drive the valve core of multiway valve to move
It is dynamic, so that the valve core of multiway valve controls interflow and the shunting of the banked direction control valves.
Preferably, the valve core of multiway valve is pointed in the direction of the check valve of first one-way throttle valve, and described second is single
The valve core of multiway valve is pointed to the direction of the individual event valve of choke valve.
Preferably, the banked direction control valves also includes the first reversal valve, first reversal valve and second one-way throttle valve
By oil communication, first reversal valve has two opposite directions.
Preferably, first one-way throttle valve, valve core of multiway valve, the second one-way throttle valve and the first reversal valve are by following
Ring oil communication.
Preferably, spring is provided between the inwall of the valve core of multiway valve and the banked direction control valves, the spring is located at described
Valve core of multiway valve is close to the side of first one-way throttle valve, when the spring is in normal condition, the banked direction control valves valve
Core controls the banked direction control valves interflow.
Present invention also offers a kind of multi-way valve system, including described banked direction control valves and the first oil pump, the second oil pump and
Fuel tank, the first oil pump and the second oil pump oil suction from the fuel tank, first oil pump and the second oil pump with it is described
Banked direction control valves by oil communication, the valve core of multiway valve can control in the banked direction control valves first oil pump and the second oil pump it
Between oil circuit interflow and shunting.
Preferably, the multi-way valve system also includes the second reversal valve and the 3rd reversal valve；The second reversal valve difference
It can be started with first oil pump and the first reversal valve by oil communication, second reversal valve to first reversal valve
Signal oil sources, so that first reversal valve commutates；3rd reversal valve respectively with second oil pump and the first reversal valve
By oil communication, the 3rd reversal valve can start signal oil sources to first reversal valve, so that the banked direction control valves valve
Core moves.
Present invention also offers a kind of engineering machinery, including described multi-way valve system.
Preferably, the engineering machinery is wheeled crane.
Or the engineering machinery is concrete mixer.
(3) beneficial effect
The banked direction control valves of the present invention sets the first one-way throttle valve and the second one-way throttle valve at the both ends of valve core of multiway valve, leads to
Cross the first one-way throttle valve and the second one-way throttle valve controlling stream cross valve core of multiway valve oil circuit fluid velocity, to slow down multichannel
Valve collaborates the movement velocity with valve core of multiway valve during shunting, so as to eliminate the Fluid pressure impact for starting moment, effectively protects
Banked direction control valves, valve core of multiway valve and related oil circuit, meanwhile, banked direction control valves of the invention is rational in infrastructure, and cost is relatively low, suitable for various
Hydraulic system, there is very strong versatility and applicability.
Brief description of the drawings
Fig. 1 is the oil circuit connection figure of the multi-way valve system of the embodiment of the present invention；.
In figure, 1：First one-way throttle valve；2：Valve core of multiway valve；3：Second one-way throttle valve；4：First reversal valve；5：The
Two reversal valves；6：3rd reversal valve；7：First oil pump；8：Second oil pump.
Embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following examples are used for
Illustrate the present invention, but can not be used for limiting the scope of the present invention.
In the description of the invention, it is necessary to explanation, term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint are relative
Importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.In addition, in the description of the invention, unless otherwise indicated, " multiple " are meant that two or two
More than.
As shown in figure 1, the multi-way valve system of the present embodiment includes：Banked direction control valves, the second reversal valve 5, the 3rd reversal valve 6,
One oil pump 7, the second oil pump 8 and fuel tank；Wherein, banked direction control valves includes：First one-way throttle valve 1, valve core of multiway valve 2, second are unidirectional
The reversal valve 4 of choke valve 3 and first；Valve core of multiway valve 2 is located at the inside of the banked direction control valves, for controlling the interflow of the banked direction control valves
With shunting.
First one-way throttle valve 1 and the second one-way throttle valve 3 are located at the both ends of valve core of multiway valve 2, the first one-way throttle valve
1st, valve core of multiway valve 2, the second one-way throttle valve 3 and the first reversal valve 4 are sequentially communicated by circulating oil path；First one-way throttle valve
1 and the second oil circuit between one-way throttle valve 3 valve core of multiway valve 2 can be driven to move so that valve core of multiway valve 2 control it is described more
Valve core of multiway valve 2, the second one-way throttle valve 3 are pointed in the interflow of road valve and shunting, the direction of the check valve of the first one-way throttle valve 1
The direction of check valve point to valve core of multiway valve 2, the first reversal valve 4 has two opposite directions, and its left end is sensing multichannel
Valve core 2, the direction of its right-hand member and left end it is in opposite direction, bullet is provided between the inwall of valve core of multiway valve 2 and the banked direction control valves
Spring, the spring is located at valve core of multiway valve 2 close to the side of the first one-way throttle valve 1, when the spring is in normal condition,
Valve core of multiway valve 2 controls the banked direction control valves to collaborate.
First oil pump 7 and the oil suction from the fuel tank of the second oil pump 8, then to whole hydraulic system fuel feeding, the first oil
The oil pump 8 of pump 7 and second can be controlled first in the banked direction control valves with the banked direction control valves by oil communication, valve core of multiway valve 2
The interflow of oil circuit and shunting between the oil pump 8 of oil pump 7 and second；Second reversal valve 5 respectively with the first oil pump 7 and the first reversal valve 4
By oil communication, the second reversal valve 5 can start signal oil sources to the first reversal valve 4, so that the first reversal valve 4 commutates, the
Three reversal valves 6 respectively can be to the first reversal valve by oil communication, the 3rd reversal valve 6 with the second oil pump 8 and the first reversal valve 4
4 start signal oil sources, so that valve core of multiway valve 2 moves.
The operation principle of the multi-way valve system of the present embodiment is：When the banked direction control valves is in interflow state, the first commutation
The right-hand member of valve 4 is in running order (i.e. direction is downward), when having a single movement in the second reversal valve 5 and the 3rd reversal valve 6
When, the obstructed excess pressure oil (i.e. the signal oil sources that the 3rd reversal valve 6 is sent) in check valve inside of the second one-way throttle valve 3, second
The choke valve work of one-way throttle valve 3, but the first one-way throttle valve 1, valve core of multiway valve 2, the second one-way throttle valve 3 and first are single
It is sequentially communicated to the inside of valve 4 by circulating oil path, and the circulating oil path connects with fuel tank, now, valve core of multiway valve 2 is in institute
The lower section for being located at the banked direction control valves under the elastic reaction of spring is stated, the oil communication between the first oil pump 7 and the second oil pump 8 is (i.e.
P1 hydraulic fluid ports connect with P2 hydraulic fluid ports in Fig. 1), this working condition is exactly to collaborate in so-called banked direction control valves valve, and interflow can be lifted in valve
The operating efficiency of individual part, heating can be mitigated again；When the second reversal valve 5 and the 3rd reversal valve 6 act simultaneously, first changes
To valve 4, left end is in running order (i.e. direction is upward) in the presence of the signal oil sources of the second reversal valve 5, now, comes from
The signal oil sources of 3rd reversal valve 6 acts on the lower surface of valve core of multiway valve 2 by the second one-way throttle valve 3, forces banked direction control valves
Valve element 2 moves up, and cuts off the oil circuit (i.e. P1 hydraulic fluid ports and P2 hydraulic fluid ports disconnect in Fig. 1) between the first oil pump 7 and the second oil pump 8, forces
First oil pump 7 and the second oil pump 8 work independently, and this working condition is so-called SHUNT state.
Valve core of multiway valve 2 has two actions in above-mentioned operation principle, first, being worked under the elastic acting force of the spring
At one end, second, being operated in the other end in the presence of pressure oil, the two act the motion for being directed to valve core of multiway valve 2,
The key of this time invention is just provided in two one-way throttle valves of the both ends of valve core of multiway valve 2 addition, i.e. the first one-way throttle valve 1
With the second one-way throttle valve 3.When valve core of multiway valve 2 is overcoming the spring to (pressure during end motion on another in the presence of pressure oil
Power oil acts on rapidly the bottom of valve core of multiway valve 2 by the check valve in the second check valve choke valve 3), due to first unidirectional
The damping hole of the choke valve of choke valve 1, force the slowly motion upwards of valve core of multiway valve 2, now, the first oil pump 7 and the second oil pump 8
Between oil circuit slowly cut off by valve core of multiway valve 2, Fluid pressure impact when eliminating shunting；Similarly, valve core of multiway valve 2 one
End removes pressure oil, the downward end motion under the elastic acting force of the spring of valve core of multiway valve 2, due to the second one-way throttle valve
The damping hole of 3 choke valve, valve core of multiway valve 2 can be made slowly to move downward, now, between the first oil pump 7 and the second oil pump 8
Oil circuit slowly connected, Fluid pressure impact when eliminating interflow.
The multi-way valve system of the present invention sets the first one-way throttle valve and the second one-way throttle at the both ends of valve core of multiway valve
Valve, the fluid velocity 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 controlling stream, to subtract
Slow banked direction control valves interflow and the movement velocity of banked direction control valves flow valve core during shunting, so as to eliminate the Fluid pressure impact for starting moment, have
Effect protect banked direction control valves, valve core of multiway valve and related oil circuit, meanwhile, multi-way valve system of the invention is rational in infrastructure, cost compared with
It is low, suitable for various hydraulic systems, there is very strong versatility and applicability.
Present invention also offers a kind of engineering machinery, the engineering machinery includes described multi-way valve system, the engineering
Machinery can be wheeled crane, crawler crane, concrete mixer or other similar engineerings with hydraulic system
Machinery.
Embodiments of the invention provide for the sake of example and description, and are not exhaustively or by this to send out
It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing
Select and describe embodiment and be to more preferably illustrate the principle and practical application of the present invention, and make one of ordinary skill in the art
It will be appreciated that the present invention is so as to designing the various embodiments with various modifications suitable for special-purpose.
Claims (5)
- A kind of 1. multi-way valve system, it is characterised in that including banked direction control valves and the first oil pump, the second oil pump and fuel tank,The banked direction control valves includes valve core of multiway valve, the first one-way throttle valve and the second one-way throttle valve；First one-way throttle Valve, valve core of multiway valve and the second one-way throttle valve are sequentially communicated by oil circuit；First one-way throttle valve and the second unidirectional section Oil circuit between stream valve can drive the valve core of multiway valve to move, so that the valve core of multiway valve controls the conjunction of the banked direction control valves Stream and shunting；Point to the valve core of multiway valve, second one-way throttle in the direction of the check valve of first one-way throttle valve Point to the valve core of multiway valve in the direction of the individual event valve of valve；The banked direction control valves also includes the first reversal valve, first reversal valve There are two opposite directions by oil communication, first reversal valve with second one-way throttle valve；Described first is single Connected to choke valve, valve core of multiway valve, the second one-way throttle valve and the first reversal valve by circulating oil path；First oil pump and the second oil pump oil suction from the fuel tank, first oil pump and the second oil pump with it is described more By oil communication, the valve core of multiway valve can control in the banked direction control valves between first oil pump and the second oil pump road valve The interflow of oil circuit and shunting；The multi-way valve system also includes the second reversal valve and the 3rd reversal valve；Second reversal valve point It can not sent out with first oil pump and the first reversal valve by oil communication, second reversal valve to first reversal valve Dynamic signal oil sources, so that first reversal valve commutates；3rd reversal valve commutates with second oil pump and first respectively Valve is by oil communication, and the 3rd reversal valve can start signal oil sources to first reversal valve, so that the banked direction control valves Valve element moves.
- 2. multi-way valve system according to claim 1, it is characterised in that the valve core of multiway valve is interior with the banked direction control valves Spring is provided between wall, the spring is located at the valve core of multiway valve close to the side of first one-way throttle valve, when described When spring is in normal condition, the valve core of multiway valve controls the banked direction control valves interflow.
- 3. a kind of engineering machinery, it is characterised in that including the multi-way valve system described in claim 1 or 2.
- 4. engineering machinery according to claim 3, it is characterised in that the engineering machinery is wheeled crane.
- 5. engineering machinery according to claim 3, it is characterised in that the 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 |
|---|---|
| CN104728199A CN104728199A (en) | 2015-06-24 |
| CN104728199B true CN104728199B (en) | 2017-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310701470.6A Active CN104728199B (en) | 2013-12-18 | 2013-12-18 | Banked direction control valves, multi-way valve system and engineering machinery |
Country Status (1)
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| CN (1) | CN104728199B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2446963C2 (en) * | 1974-10-02 | 1982-12-16 | Robert Bosch Gmbh, 7000 Stuttgart | Hydraulic control device |
| 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
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| CN104728199A (en) | 2015-06-24 |
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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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| TR01 | Transfer of patent right |