CN104165166A - Compact-type telescopic oil cylinder changeover valve set - Google Patents
Compact-type telescopic oil cylinder changeover valve set Download PDFInfo
- Publication number
- CN104165166A CN104165166A CN201410369560.4A CN201410369560A CN104165166A CN 104165166 A CN104165166 A CN 104165166A CN 201410369560 A CN201410369560 A CN 201410369560A CN 104165166 A CN104165166 A CN 104165166A
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- switching valve
- port
- runner
- valve rod
- actuator port
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Abstract
The invention discloses a compact-type telescopic oil cylinder changeover valve set. The compact-type telescopic oil cylinder changeover valve set comprises a valve body, a first working oil port, a second working oil port, a control oil port, an oil discharging port, an oil returning port, an oil feeding port, a control flow channel, an unloading flow channel, a first working flow channel, an auxiliary working flow channel, a second working flow channel, an oil returning flow channel, a cavity, an electromagnetic directional valve, a reverse one-way valve, a changeover valve rod and a spring control assembly, wherein the first working oil port, the second working oil port, the control oil port, the oil discharging port, the oil returning port and the oil feeding port are formed in the valve body; the control flow channel, the unloading flow channel, the first working flow channel, the auxiliary working flow channel, the second working flow channel, the oil returning flow channel, the cavity, the electromagnetic directional valve and the reverse one-way valve are arranged in the valve body; the changeover valve rod is installed in the cavity, the spring control assembly controls the changeover valve rod to move along the cavity, the electromagnetic directional valve is installed at the control end of the changeover valve rod and is communicated with the control oil port and the oil discharging port through the control flow channel and the unloading flow channel, and the reverse one-way valve is installed on the second working flow channel. The compact-type telescopic oil cylinder changeover valve set has the advantages of being highly integrated, having no tube and being compact.
Description
Technical field
The present invention relates to switching valve technical field, more particularly, particularly a kind of compact type telescopic oil cylinder switching valve group.
Background technique
Along with the development of China's engineering machinery grows, particularly for truck crane, user and main frame unit are more and more higher to the requirement of car load hydraulic system.The requirement of Highgrade integration, nothing pipeization and compact type the switching control valve of telescopic oil cylinder is proposed simultaneously.For this reason, necessaryly provide a kind of telescopic oil cylinder switching valve group, meet above-mentioned requirements.
Summary of the invention
The object of the present invention is to provide a kind of Highgrade integration and the compact type telescopic oil cylinder switching valve group without pipeization.
In order to solve problem set forth above, the technical solution used in the present invention is: a kind of compact type telescopic oil cylinder switching valve group, comprise valve body, and also comprise the first actuator port of being located on valve body, the second actuator port, control port, unloading port, with return opening and filler opening, be located at the control runner in valve body, off-load runner, the first work runner, back work runner, the second work runner, oil return runner, cavity, solenoid directional control valve and oppositely one-way valve, be installed on the switching valve rod in cavity, controls the spring control unit that described switching valve rod moves along cavity, and described solenoid directional control valve is arranged on the control end that switches valve rod, and by controlling runner, off-load runner and control port, unloading port is communicated with, described reverse one-way valve is arranged on the second work runner, described the first work runner is communicated with the first actuator port in the time switching valve rod work and filler opening is communicated with, described the second work runner is communicated with the second actuator port and reverse one-way valve, and described back work runner is communicated with the second actuator port and return opening, and in switching valve rod commutation transient process, filler opening is communicated with the first actuator port and the second actuator port simultaneously, and in the time that switching valve rod commutates to limit position, filler opening is only communicated with 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 comprises bar portion, the first stop part and the second stop part, described the first stop part and the second stop part are corresponding with the first actuator port and the second actuator port respectively, and in switching valve rod commutation transient process, filler opening is communicated with the first actuator port and the second actuator port by the first stop part and the second stop part simultaneously.
According to a preferred embodiment of the invention: the first filter screen damping and the second filter screen damping of mutual series connection are also installed on described back work runner.
According to a preferred embodiment of the invention: described spring control unit comprises end cap, Limit screw, end cap spring and spring seat, described end cap is installed on one end of valve body, described Limit screw is installed in end cap, described spring socket sleeve is located at the end of switching valve rod, one end of described Limit screw contacts with the end of switching valve rod, described end cap spring housing is located on Limit screw, and contacts with spring seat.
According to a preferred embodiment of the invention: between described end cap and valve body, be also provided with baffle plate, between described end cap and baffle plate, by an O RunddichtringO sealing, between described baffle plate and valve body, seal by an O type circle.
According to a preferred embodiment of the invention: be positioned on the valve body of described switching valve rod the other end the ED plug screw of answering with switching valve pole pair is also installed.
According to a preferred embodiment of the invention: described reverse one-way valve and solenoid directional control valve all adopt screw thread inserting type structure to be installed on valve body.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention, in the time that oil inlet P is communicated with the second actuator port B, is switched valve rod and is disconnected the second work runner and back work runner,, because the release of damping flow causes, efficiency is low, speed is slow in the time stretching out for whole like this telescopic oil cylinder mechanism;
2, be provided with control end cover with respect to current like product, and control end of the present invention is integrated in valve body, has greatly reduced the volume of valve group, make structure more compact;
3, the present invention, by the setting of filter screen damping, has promoted the anti-soil of valve group inside, has promoted the working life of product;
4, the present invention adopts the structure of screw thread inserting type, has reduced the volume of valve group, makes valve group more small and exquisite, is convenient to maintenance.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of compact type telescopic oil cylinder switching valve group of the present invention.
Fig. 2 is the plan view of compact type telescopic oil cylinder switching valve group of the present invention.
Fig. 3 is the plan view of compact type telescopic oil cylinder switching valve group of the present invention.
Fig. 4 is the sectional view of C-C direction in Fig. 3 of the present invention.
Fig. 5 is the hydraulic schematic diagram of compact type telescopic oil cylinder switching valve group of the present invention.
Description of reference numerals: 1, valve body, 2, baffle plate, 3, end cap, 4, socket head screw, 5, and cap, 6, the flat cap of lid type, 7, oppositely one-way valve, 8, smash is stifled, 9, the first filter screen damping, 10, the second filter screen damping, 11, Limit screw, 12, end cap spring, 13, spring seat, 14, O RunddichtringO, 15, O type circle, 16, valve rod, 17, solenoid directional control valve, 18, ED plug screw, 19, control runner, 20, off-load runner, 21, the first work runner, 22, back work runner, 23, the second work runner, 24, oil return runner, 25, bar portion, 26, the first stop part, 27, the second stop part, 28, cavity.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention are made to more explicit defining.
Consult shown in Fig. 1 to Fig. 5, a kind of compact type telescopic oil cylinder switching valve group provided by the invention, comprises valve body 1, also comprises the first actuator port A being located on valve body 1, the second actuator port B, control port X, the Y of unloading port, with oil return inlet T and oil inlet P, be located at the control runner 19 in valve body 1, off-load runner 20, the first work runner 21, back work runner 22, the second work runner 23, oil return runner 24, cavity 28, solenoid directional control valve 17 and oppositely one-way valve 7, be installed on the switching valve rod 16 in cavity 28, control the spring control unit that described switching valve rod 16 moves along cavity 28, described solenoid directional control valve 17 is arranged on the control end that switches valve rod 16, and by controlling runner 19, off-load runner 20 and control port X, the Y of unloading port is communicated with, described reverse one-way valve 7 is arranged on the second work runner 23, the first described work runner 21 is communicated with the first actuator port A in the time that switching valve rod 16 is worked and oil inlet P is communicated with, the second described work runner 23 is communicated with the second actuator port B and reverse one-way valve 7, and described back work runner 22 is communicated with the second actuator port B and oil return inlet T, and commutate in transient process at switching valve rod 16, oil inlet P is communicated with the first actuator port A and the second actuator port B simultaneously, in the time that switching valve rod 16 commutates to limit position, oil inlet P is only communicated with the second actuator port B, and described switching valve rod 16 cuts off back work runner 22.
Consult shown in Fig. 1, in the present invention, described switching valve rod 16 comprises bar portion 25, the first stop part 26 and the second stop part 27, the first described 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 commutate in transient process at switching valve rod 16, oil inlet P is communicated with the first actuator port A and the second actuator port B by the first stop part 26 and the second stop part 27 simultaneously.
In the present invention, the first filter screen damping 9 and the second filter screen damping 10 of mutual series connection are also installed on described back work runner 22, and are also provided with smash stifled 8 in the outside of the first filter screen damping 9.
In the present invention, described spring control unit comprises end cap 3, Limit screw 11, end cap spring 12 and spring seat 13, described end cap 3 is installed on one end of valve body 1, described Limit screw 11 is installed in end cap 3, described spring seat 13 is set in the end of switching valve rod 16, one end of described Limit screw 11 contacts with the end of switching valve rod 16, and described end cap spring 12 is sheathed on Limit screw 11, and contacts with spring seat 13; And the other end of Limit screw 11 is by also cap 5 and the flat cap 6 of lid type link together.
In the present invention, between described end cap 3 and valve body 1, be also provided with baffle plate 2, total links together by socket head screw 4, between described end cap 3 and baffle plate 2, seals by an O RunddichtringO 14, between described baffle plate 2 and valve body 1, seals by an O type circle 15.
In the present invention, be positioned on the valve body 1 of described switching valve rod 16 the other end the ED plug screw 18 corresponding with switching valve rod 16 is also installed.
As preferably, the solenoid directional control valve 17 in the present invention is two-position three way magnetic valve.
As preferably, the reverse one-way valve 7 described in the present invention and solenoid directional control valve 17 all adopt screw thread inserting type structure to be installed on valve body 1, have reduced greatly the volume of valve group, make the volume of valve group reach 155X116X60 (mm).
The working principle of compact type telescopic oil cylinder switching valve group of the present invention is: oil inlet P connects the corresponding actuator port of car multi-way valve; And the first actuator port A and the second actuator port B connect respectively the rodless cavity (wherein the first actuator port A is connected I oil cylinder, the second actuator port B connects II oil cylinder) of two telescopic oil cylinders; Control port X connects constant pressure oil source; The Y of unloading port connects without back pressure runner oil sump tank; Oil return inlet T takes back oily runner oil sump tank.
When solenoid directional control valve 17 must not be electric, switch valve rod 16 does not commutate under the active force of end cap spring 12, oil inlet P fluid enters left-hand component work runner by the restriction of switching valve rod 16 and leads to I oil cylinder rodless cavity by the first actuator port A, realize I oil cylinder extend action, simultaneously in the time that I oil cylinder stretches out because center tube volume becomes large, cause occurring in center tube negative pressure, now the fluid of oil return runner enters right side work runner through Fill valve and supplements center tube through the second actuator port B, prevents vacuum phenomenon and damages oil cylinder; In the time of the oil-feed of I cylinder rod chamber, rodless cavity fluid, by the logical oil inlet P of the first actuator port A, through multi-way valve oil sump tank, is realized I oil cylinder retract action; Simultaneously in the time that I oil cylinder is retracted because center tube volume diminishes, cause occurring in center tube supercharging phenomenon, now pressure oil liquid through right side work runner through valve rod restriction to auxiliary flow, be discharged into fuel tank by double filter screen damping through T mouth, prevent the continuous lifting of pressure and damage oil cylinder and the misoperation that causes II oil cylinder to stretch out;
When solenoid directional control valve 17 obtains electric, the pressure signal oil of constant pressure oil source enters the control chamber that switches valve rod 16 through solenoid directional control valve 17, switch valve rod 16 under pilot pressure effect, overcome the spring force commutation of end cap spring 12, in commutation process, in order to prevent compression shock, due to the first stop part 26, the effect of the second stop part 27 and bar portion 25, when can realizing logical the first actuator port A of oil inlet P, be also communicated with the second actuator port B, in the time that switching valve rod 16 commutates to limit position, oil inlet P is only communicated with the second actuator port B, (and the work runner of the second actuator port B and the disconnection of back work runner, can prevent double filter screen damping release portion fluid and affect the speed of stretching out), enter II oil cylinder, realize the extend action of II oil cylinder.
The invention has the advantages that: in the time that oil inlet P is communicated with the second actuator port B, switches valve rod 16 and disconnect the second work runner and back work runner, because the release of damping flow causes, efficiency is low, speed is slow in the time stretching out for whole like this telescopic oil cylinder mechanism; Be provided with control end cover with respect to current like product, and control end of the present invention is integrated in valve body, has greatly reduced the volume of valve group, make structure more compact; The present invention, by the setting of filter screen damping, has promoted the anti-soil of valve group inside, has promoted the working life of product; The present invention adopts the structure of screw thread inserting type, has reduced the volume of valve group, makes valve group more small and exquisite, is convenient to maintenance.
Above-described embodiment is preferably mode of execution of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (7)
1. a compact type telescopic oil cylinder switching valve group, comprise valve body (1), it is characterized in that: also comprise the first actuator port (A) of being located on valve body (1), the second actuator port (B), control port (X), unloading port (Y), and return opening (T) and filler opening (P), be located at the control runner (19) in valve body (1), off-load runner (20), the first work runner (21), back work runner (22), the second work runner (23), oil return runner (24), cavity (28), solenoid directional control valve (17) and oppositely one-way valve (7), be installed on the switching valve rod (16) in cavity (28), control described switching valve rod (16) along the mobile spring control unit of cavity (28), described solenoid directional control valve (17) is arranged on the control end that switches valve rod (16), and by controlling runner (19), off-load runner (20) and control port (X), unloading port (Y) is communicated with, described reverse one-way valve (7) is arranged on the second work runner (23), described the first work runner (21) is communicated with the first actuator port (A) in the time switching valve rod (16) work and filler opening (P) is communicated with, described the second work runner (23) is communicated with the second actuator port (B) and reverse one-way valve (7), described back work runner (22) is communicated with the second actuator port (B) and return opening (T), and in switching valve rod (16) commutation transient process, filler opening (P) is communicated with the first actuator port (A) and the second actuator port (B) simultaneously, in the time that switching valve rod (16) commutates to limit position, filler opening (P) is only communicated with the second actuator port (B), and described switching valve rod (16) cuts off back work runner (22).
2. compact type telescopic oil cylinder switching valve group according to claim 1, it is characterized in that: described switching valve rod (16) comprises bar portion (25), the first stop part (26) and the second stop part (27), described the first 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, filler opening (P) is communicated with the first actuator port (A) and the second actuator port (B) by the first stop part (26) and the second stop part (27) simultaneously.
3. compact type telescopic oil cylinder switching valve group according to claim 1, is characterized in that: described back work runner (on 22) is also provided with the first filter screen damping (9) and the second filter screen damping (10) of mutual series connection.
4. compact type telescopic oil cylinder switching valve group according to claim 1, it is characterized in that: described spring control unit comprises end cap (3), Limit screw (11), end cap spring (12) and spring seat (13), described end cap (3) is installed on one end of valve body (1), described Limit screw (11) is installed in end cap (3), described spring seat (13) is set in the end of switching 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 contact with spring seat (13).
5. compact type telescopic oil cylinder switching valve group according to claim 4, it is characterized in that: between described end cap (3) and valve body (1), be also provided with baffle plate (2), between described end cap (3) and baffle plate (2), by O RunddichtringO (14) sealing, between described baffle plate (2) and valve body (1), seal by an O type circle (15).
6. compact type telescopic oil cylinder switching valve group according to claim 4, is characterized in that: be positioned on the valve body (1) of described switching valve rod (16) the other end the ED plug screw (18) corresponding with switching valve rod (16) is also installed.
7. according to the compact type telescopic oil cylinder switching valve group described in claim 1 to 6 any one, it is characterized in that: described reverse one-way valve (7) and solenoid directional control valve (17) all adopt screw thread inserting type structure to be installed on valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369560.4A CN104165166B (en) | 2014-07-30 | 2014-07-30 | A kind of compact telescopic oil cylinder switching valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369560.4A CN104165166B (en) | 2014-07-30 | 2014-07-30 | A kind of compact telescopic oil cylinder switching valve group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104165166A true CN104165166A (en) | 2014-11-26 |
| CN104165166B CN104165166B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410369560.4A Expired - Fee Related CN104165166B (en) | 2014-07-30 | 2014-07-30 | A kind of compact telescopic oil cylinder switching valve group |
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| CN (1) | CN104165166B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489788A (en) * | 2017-08-31 | 2017-12-19 | 上海立新液压有限公司 | A kind of efficient solenoid directional control valve |
| CN108005987A (en) * | 2017-12-31 | 2018-05-08 | 无锡英特帕普威孚液压有限责任公司 | Hydraulicdirectional control valve reversing oil circuit structure |
| CN108087365A (en) * | 2017-12-19 | 2018-05-29 | 宁波文泽机电技术开发有限公司 | Oil circuit automatic transfer valve |
| CN108626296A (en) * | 2018-04-02 | 2018-10-09 | 徐州徐工液压件有限公司 | A kind of one-way damper valve on hydro-pneumatic suspension system |
| CN110486504A (en) * | 2019-08-25 | 2019-11-22 | 黄洪刚 | A kind of low-power consumption big flow solenoid valve |
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| 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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| CN101598152A (en) * | 2009-06-18 | 2009-12-09 | 卢宇 | Large-flow compact type bi-directional rotary control valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489788A (en) * | 2017-08-31 | 2017-12-19 | 上海立新液压有限公司 | A kind of efficient solenoid directional control valve |
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| CN108087365A (en) * | 2017-12-19 | 2018-05-29 | 宁波文泽机电技术开发有限公司 | Oil circuit automatic transfer valve |
| CN108005987A (en) * | 2017-12-31 | 2018-05-08 | 无锡英特帕普威孚液压有限责任公司 | Hydraulicdirectional control valve reversing oil circuit structure |
| CN108626296A (en) * | 2018-04-02 | 2018-10-09 | 徐州徐工液压件有限公司 | A kind of one-way damper valve on hydro-pneumatic suspension system |
| CN110486504A (en) * | 2019-08-25 | 2019-11-22 | 黄洪刚 | A kind of low-power consumption big flow solenoid valve |
Also Published As
| Publication number | Publication date |
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| CN104165166B (en) | 2016-08-24 |
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Granted publication date: 20160824 Termination date: 20180730 |