CN104165166B - A kind of compact telescopic oil cylinder switching valve group - Google Patents

A kind of compact telescopic oil cylinder switching valve group Download PDF

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Publication number
CN104165166B
CN104165166B CN201410369560.4A CN201410369560A CN104165166B CN 104165166 B CN104165166 B CN 104165166B CN 201410369560 A CN201410369560 A CN 201410369560A CN 104165166 B CN104165166 B CN 104165166B
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CN
China
Prior art keywords
switching valve
runner
actuator port
valve rod
control
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Expired - Fee Related
Application number
CN201410369560.4A
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Chinese (zh)
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CN104165166A (en
Inventor
刘峰
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ZHUZHOU ZHONGYAN FLUID TECHNOLOGY Co Ltd
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ZHUZHOU ZHONGYAN FLUID TECHNOLOGY Co Ltd
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Priority to CN201410369560.4A priority Critical patent/CN104165166B/en
Publication of CN104165166A publication Critical patent/CN104165166A/en
Application granted granted Critical
Publication of CN104165166B publication Critical patent/CN104165166B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a kind of compact telescopic oil cylinder switching valve group, including valve body, the first actuator port being located on valve body, second actuator port, control port, unloading port, oil return opening and oil-in, the control runner being located in valve body, off-load runner, first platform flow channel, back work runner, second platform flow channel, oil return runner, cavity, solenoid directional control valve and reverse check valve, the switching valve rod being installed in cavity, control the spring control assembly that switching valve rod moves along cavity, solenoid directional control valve is arranged on the control end of switching valve rod, and connect with control port by controlling runner, connected with unloading port by off-load runner, reversely check valve is arranged on the second platform flow channel.The present invention has Highgrade integration, advantage without pipe and densification.

Description

A kind of compact telescopic oil cylinder switching valve group
Technical field
The present invention relates to switch valve technology field, in particular, particularly to a kind of compact telescopic oil cylinder switching valve group.
Background technology
Along with the development of China's engineering machinery grows, especially for autocrane, user and main frame unit to car load The requirement of hydraulic system is more and more higher.The switching control valve of telescopic oil cylinder is proposed Highgrade integration simultaneously, without pipe and compact The requirement of type.There is provided a kind of telescopic oil cylinder switching valve group to this end, necessary, meet above-mentioned requirements.
Summary of the invention
It is an object of the invention to provide a kind of Highgrade integration and the compact telescopic oil cylinder without pipe switches valve group.
In order to solve posed problems above, the technical solution used in the present invention is:
A kind of compact telescopic oil cylinder switching valve group, including valve body, the first actuator port of also including being located on valve body, second Actuator port, control port, unloading port, oil return opening and oil-in, the control runner being located in valve body, off-load runner, One platform flow channel, back work runner, the second platform flow channel, oil return runner, cavity, solenoid directional control valve and reverse check valve, The switching valve rod being installed in cavity, controls the spring control assembly that described switching valve rod moves along cavity, and described electromagnetism changes It is arranged on the control end of switching valve rod to valve, and connects with control port, by off-load runner and unloading port by controlling runner Connection, described first platform flow channel connects the first actuator port and oil-in, described second workflow when switching valve rod work Road connects the second actuator port and reverse check valve, described back work flow passage the second actuator port and oil return opening;And In switching valve rod commutation transient process, oil-in connects the first actuator port and the second actuator port simultaneously, changes at switching valve rod To during to extreme position, oil-in only connects the second actuator port, and described switching valve rod cuts off back work runner.
According to a preferred embodiment of the invention: described switching valve rod includes bar portion, the first stop part and the second stop part, institute State the first stop part and the second stop part is corresponding with the first actuator port and the second actuator port respectively, and in switching valve rod commutation In transient process, oil-in connects the first actuator port and the second working oil by the first stop part and the second stop part simultaneously Mouthful.
According to a preferred embodiment of the invention: on described back work runner, be also equipped with the first filter screen damping being serially connected With the second filter screen damping.
According to a preferred embodiment of the invention: described spring controls assembly and includes end cap, Limit screw, end cap spring and bullet Spring abutment, described end cap is installed on one end of valve body, and described Limit screw is installed in end cap, and described spring socket sleeve is located at switching The end of valve rod, one end of described Limit screw contacts with the end of switching valve rod, and spacing spiral shell is located at by described end cap spring housing On bar, and contact with spring base.
According to a preferred embodiment of the invention: be additionally provided with baffle plate between described end cap and valve body, between described end cap and baffle plate Sealed by an O RunddichtringO, sealed by an O between described baffle plate and valve body.
According to a preferred embodiment of the invention: be positioned on the valve body of described switching valve rod the other end and be also equipped with and switch valve The ED plug screw that pole pair is answered.
According to a preferred embodiment of the invention: described reverse check valve and solenoid directional control valve all use screw thread inserting type structure to pacify It is loaded on valve body.
Compared with prior art, the beneficial effects of the present invention is:
1, the present invention is when oil inlet P connects the second actuator port B, and switching valve rod disconnects the second platform flow channel and auxiliary work Make runner, due to the release of damping flow, the most whole telescopic oil cylinder mechanism causes that efficiency is low, speed is slow when stretching out;
2, it is provided with control end cap portion relative to current like product, and the control end of the present invention is integrated in valve body, Greatly reduce the volume of valve group, make structure the compactest;
3, the setting that the present invention is damped by filter screen, improves the anti-soil of valve group inside, improves the service life of product;
4, the present invention uses the structure of screw thread inserting type, decreases the volume of valve group, makes valve group the smallest and the most exquisite, it is simple to maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing skill In art description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to root Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1. for the structural representation of the compact telescopic oil cylinder switching valve group of the present invention.
Fig. 2. for the top view of the compact telescopic oil cylinder switching valve group of the present invention.
Fig. 3. for the front view of the compact telescopic oil cylinder switching valve group of the present invention.
Fig. 4. for the sectional view in C-C direction in Fig. 3 of the present invention.
Fig. 5. for the hydraulic schematic diagram of the compact telescopic oil cylinder switching valve group of the present invention.
Description of reference numerals: 1, valve body, 2, baffle plate, 3, end cap, 4, soket head cap screw, 5 and cap, 6, cap-type flat Cap, 7, reverse check valve, 8, smash block up, the 9, first filter screen damping, the 10, second filter screen damping, 11, spacing spiral shell Bar, 12, end cap spring, 13, spring base, 14, O RunddichtringO, 15, O, 16, valve rod, 17, electromagnetism changes To valve, 18, ED plug screw, 19, control runner, 20, off-load runner, the 21, first platform flow channel, 22, back work stream Road, the 23, second platform flow channel, 24, oil return runner, 25, bar portion, the 26, first stop part, the 27, second stop part, 28, cavity.
Detailed description of the invention
Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail, so that advantages and features of the invention can be more easy to In being readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clear and definite defining.
Embodiment
Refering to shown in Fig. 1 to Fig. 5, a kind of compact telescopic oil cylinder switching valve group that the present invention provides, including valve body 1, also Including the first actuator port A being located on valve body 1, the second actuator port B, control port X, unloading port Y, oil return inlet T And oil inlet P, the control runner 19 being located in valve body 1, off-load runner the 20, first platform flow channel 21, back work stream Road the 22, second platform flow channel 23, oil return runner 24, cavity 28, solenoid directional control valve 17 and reverse check valve 7, be installed on Switching valve rod 16 in cavity 28, the spring that the switching valve rod 16 described in control moves along cavity 28 controls assembly, institute State solenoid directional control valve 17 be arranged on switching valve rod 16 control end, and by control runner 19 connect with control port X, Connected with unloading port Y by off-load runner 20, described reverse check valve 7 is arranged on the second platform flow channel 23, institute The first platform flow channel 21 stated connects the first actuator port A and oil inlet P, described second when switching valve rod 16 and working Platform flow channel 23 connects the second actuator port B and reverse check valve 7, and described back work runner 22 connects the second work Hydraulic fluid port B and oil return inlet T;And commutating in transient process at switching valve rod 16, oil inlet P connects the first actuator port A simultaneously With the second actuator port B, when switching valve rod 16 and commutating to extreme position, oil inlet P only connects the second actuator port B, Described switching valve rod 16 cuts off back work runner 22.
Refering to shown in Fig. 1, in the present invention, described switching valve rod 16 includes bar portion the 25, first stop part 26 and second Stop part 27, the first described stop part 26 and the second stop part 27 respectively with the first actuator port A and the second actuator port B is corresponding, and commutates in transient process at switching valve rod 16, and oil inlet P is stopped by the first stop part 26 and second simultaneously Portion 27 connects the first actuator port A and the second actuator port B.
In the present invention, described back work runner 22 is also equipped with the first filter screen damping 9 and second being serially connected Filter screen damping 10, and damp the outside of 9 at the first filter screen and be additionally provided with smash and block up 8.
In the present invention, described spring controls assembly and includes end cap 3, Limit screw 11, end cap spring 12 and spring base 13, described end cap 3 is installed on one end of valve body 1, and described Limit screw 11 is installed in end cap 3, described bullet Spring abutment 13 is set in the end of switching valve rod 16, and one end of described Limit screw 11 connects with the end of switching valve rod 16 Touching, described end cap spring 12 is sheathed on Limit screw 11, and contacts with spring base 13;And Limit screw 11 The other end by and cap 5 and the flat cap of cap-type 6 link together.
In the present invention, being additionally provided with baffle plate 2 between described end cap 3 and valve body 1, total is to pass through soket head cap screw 4 link together, and are sealed by an O RunddichtringO 14 between described end cap 3 and baffle plate 2, described baffle plate 2 with Sealed by an O 15 between valve body 1.
In the present invention, it is positioned on the valve body 1 of described switching valve rod 16 the other end and is also equipped with to switch valve rod 16 right The ED plug screw 18 answered.
As preferably, the solenoid directional control valve 17 in the present invention is two-position three way magnetic valve.
As preferably, heretofore described reverse check valve 7 and solenoid directional control valve 17 all use screw thread inserting type structure to pacify It is loaded on valve body 1, is greatly reduced the volume of valve group, make the volume of valve group reach 155X 116X 60 (mm).
The operation principle of the compact telescopic oil cylinder switching valve group of the present invention is:
Oil inlet P connects the corresponding actuator port of car banked direction control valves;And the first actuator port A and the second actuator port B is respectively (wherein the first actuator port A connects I oil cylinder, the second actuator port B and connects No. II to connect the rodless cavity of two telescopic oil cylinders Oil cylinder);Control port X connects constant pressure oil source;Unloading port Y connects without back pressure runner oil sump tank;Oil return inlet T takes back oil runner and returns Fuel tank.
When solenoid directional control valve 17 must not be electric, and switching valve rod 16 does not commutates under the active force of end cap spring 12, oil inlet P Fluid by switching valve rod 16 restriction enter left-hand component platform flow channel by the first actuator port A lead to I oil cylinder without Bar chamber, it is achieved I oil cylinder extending action, becomes big when I oil cylinder stretches out due to central canal volume simultaneously, causes central canal Negative pressure inside occur, now the fluid of oil return runner platform flow channel on the right side of Fill valve enters supplements center through the second actuator port B Pipe, prevents vacuum phenomenon and damages oil cylinder;When I cylinder rod chamber oil-feed, rodless cavity fluid is by the first working oil Mouth A leads to oil inlet P, through banked direction control valves oil sump tank, it is achieved I oil cylinder retract action;Simultaneously when I oil cylinder is retracted due to Central canal volume diminishes, and occurs supercharging phenomenon in causing central canal, and now pressure oil liquid throttles through valve rod through right side platform flow channel Mouth, to auxiliary flow, is discharged into fuel tank by double filter screen damping through T mouth, prevents constantly promoting of pressure from damaging oil cylinder and causing The misoperation that II oil cylinder stretches out;
When solenoid directional control valve 17 obtains electric, the pressure signal oil of constant pressure oil source enters switching valve rod 16 through solenoid directional control valve 17 Controlling chamber, switching valve rod 16, under controlling pressure effect, overcomes the spring force of end cap spring 12 to commutate, in commutation process, In order to prevent compression shock, due to the first stop part the 26, second stop part 27 and effect in bar portion 25, oil-in can be realized P also connects the second actuator port B while leading to the first actuator port A, when switching valve rod 16 and commutating to limit position, and oil-feed Mouthful P only connects the second actuator port B, (and the platform flow channel of the second actuator port B disconnects with back work runner, can in case Only double filter screen damping discharges part fluid and affects and stretch out speed), enter II oil cylinder, it is achieved stretching out of II oil cylinder is dynamic Make.
It is an advantage of the current invention that: when oil inlet P connects the second actuator port B, switching valve rod 16 disconnects the second work Runner and back work runner, the most whole telescopic oil cylinder mechanism when stretching out due to damping flow release cause efficiency low, Speed is slow;It is provided with control end cap portion relative to current like product, and the control end of the present invention is integrated in valve body, Greatly reduce the volume of valve group, make structure the compactest;The setting that the present invention is damped by filter screen, improves the anti-of valve group Dirt inside, improves the service life of product;The present invention uses the structure of screw thread inserting type, decreases the volume of valve group, makes Valve group is the smallest and the most exquisite, it is simple to maintenance.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not limited by above-described embodiment System, the change made, modifies, substitutes, combines, simplifies under other any spirit without departing from the present invention and principle, All should be the substitute mode of equivalence, within being included in protection scope of the present invention.

Claims (5)

1. a compact telescopic oil cylinder switching valve group, including valve body (1), it is characterised in that: also include being located at valve body (1) On the first actuator port (A), the second actuator port (B), control port (X), unloading port (Y), oil return opening (T) With oil-in (P), the control runner (19) being located in valve body (1), off-load runner (20), the first platform flow channel (21), Back work runner (22), the second platform flow channel (23), oil return runner (24), cavity (28), solenoid directional control valve (17) With reverse check valve (7), the switching valve rod (16) being installed in cavity (28), control described switching valve rod (16) edge The spring cavity (28) movement controls assembly, and described solenoid directional control valve (17) is arranged on the control of switching valve rod (16) End, and connect with control port (X), by off-load runner (20) with unloading port (Y) even by controlling runner (19) Logical, described reverse check valve (7) is arranged on the second platform flow channel (23), and described first platform flow channel (21) is being cut Connecting the first actuator port (A) and oil-in (P) when changing valve rod (16) work, described second platform flow channel (23) is even Logical second actuator port (B) and reverse check valve (7), described back work runner (22) connects the second actuator port (B) With oil return opening (T);And in switching valve rod (16) commutation transient process, oil-in (P) connects the first working oil simultaneously Mouth (A) and the second actuator port (B), when switching valve rod (16) commutation to extreme position, oil-in (P) only connects Second actuator port (B), described switching valve rod (16) cuts off back work runner (22);
Described switching valve rod (16) includes bar portion (25), the first stop part (26) and the second stop part (27), described One stop part (26) and the second stop part (27) are corresponding with the first actuator port (A) and the second actuator port (B) respectively, And in switching valve rod (16) commutation transient process, oil-in (P) is simultaneously by the first stop part (26) and the second resistance Stopper (27) connects the first actuator port (A) and the second actuator port (B);
The first filter screen damping (9) and the damping of the second filter screen being serially connected it is also equipped with on described back work runner (22) (10)。
Compact telescopic oil cylinder the most according to claim 1 switching valve group, it is characterised in that: described spring control group Part includes end cap (3), Limit screw (11), end cap spring (12) and spring base (13), and described end cap (3) is installed on One end of valve body (1), described Limit screw (11) is installed in end cap (3), and described spring base (13) is set in be cut Changing the end of valve rod (16), one end of described Limit screw (11) contacts with the end of switching valve rod (16), described End cap spring (12) is sheathed on Limit screw (11), and contacts with spring base (13).
Compact telescopic oil cylinder the most according to claim 2 switching valve group, it is characterised in that: described end cap (3) with Baffle plate (2) it is additionally provided with, by an O RunddichtringO (14) between described end cap (3) and baffle plate (2) between valve body (1) Seal, sealed by an O (15) between described baffle plate (2) and valve body (1).
Compact telescopic oil cylinder the most according to claim 1 switching valve group, it is characterised in that: it is positioned at described switching valve The ED plug screw (18) corresponding with switching valve rod (16) it is also equipped with on the valve body (1) of bar (16) the other end.
5. switch valve group according to the compact telescopic oil cylinder described in Claims 1-4 any one, it is characterised in that: institute State reverse check valve (7) and solenoid directional control valve (17) all uses screw thread inserting type structure to be installed on valve body (1).
CN201410369560.4A 2014-07-30 2014-07-30 A kind of compact telescopic oil cylinder switching valve group Expired - Fee Related CN104165166B (en)

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CN201410369560.4A CN104165166B (en) 2014-07-30 2014-07-30 A kind of compact telescopic oil cylinder switching valve group

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CN104165166B true CN104165166B (en) 2016-08-24

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108087365B (en) * 2017-12-19 2019-11-26 江苏双辉机械制造有限公司 Oil circuit automatic transfer valve
CN108626296B (en) * 2018-04-02 2020-06-02 徐州徐工液压件有限公司 One-way damping valve used on hydro-pneumatic suspension system
CN110486504B (en) * 2019-08-25 2020-12-22 江苏科迈液压控制系统有限公司 Low-power-consumption large-flow electromagnetic valve

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Publication number Priority date Publication date Assignee Title
CN101598152A (en) * 2009-06-18 2009-12-09 卢宇 Large-flow compact type bi-directional rotary control valve
CN201661537U (en) * 2010-02-11 2010-12-01 卢宇 Upper electro-hydraulic integrating operation rotary control valve of mechanical crane
CN102135118A (en) * 2011-04-17 2011-07-27 常德中联重科液压有限公司 Hydraulic control component and control circuit with same
CN102678647A (en) * 2012-05-31 2012-09-19 常德中联重科液压有限公司 Direction control valve
CN203430888U (en) * 2013-08-09 2014-02-12 徐州重型机械有限公司 Wheeled crane and hydraulic balance loop thereof
CN204003721U (en) * 2014-07-30 2014-12-10 株洲中研流体技术有限公司 A kind of compact type telescopic oil cylinder switching valve group

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US7481149B2 (en) * 2005-07-04 2009-01-27 Smc Corporation Bimanual control valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101598152A (en) * 2009-06-18 2009-12-09 卢宇 Large-flow compact type bi-directional rotary control valve
CN201661537U (en) * 2010-02-11 2010-12-01 卢宇 Upper electro-hydraulic integrating operation rotary control valve of mechanical crane
CN102135118A (en) * 2011-04-17 2011-07-27 常德中联重科液压有限公司 Hydraulic control component and control circuit with same
CN102678647A (en) * 2012-05-31 2012-09-19 常德中联重科液压有限公司 Direction control valve
CN203430888U (en) * 2013-08-09 2014-02-12 徐州重型机械有限公司 Wheeled crane and hydraulic balance loop thereof
CN204003721U (en) * 2014-07-30 2014-12-10 株洲中研流体技术有限公司 A kind of compact type telescopic oil cylinder switching valve group

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