CN105757051A - Plug-in type hydraulic lock - Google Patents

Plug-in type hydraulic lock Download PDF

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Publication number
CN105757051A
CN105757051A CN201610253394.0A CN201610253394A CN105757051A CN 105757051 A CN105757051 A CN 105757051A CN 201610253394 A CN201610253394 A CN 201610253394A CN 105757051 A CN105757051 A CN 105757051A
Authority
CN
China
Prior art keywords
piston
hydraulic fluid
fluid port
valve
plug
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610253394.0A
Other languages
Chinese (zh)
Inventor
张龙飞
唐忠林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QINGSHEN GELIN WEIER HYDRODYNAMIC FORCE CONTROL TECHNOLOGY Co Ltd
Original Assignee
QINGSHEN GELIN WEIER HYDRODYNAMIC FORCE CONTROL TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by QINGSHEN GELIN WEIER HYDRODYNAMIC FORCE CONTROL TECHNOLOGY Co Ltd filed Critical QINGSHEN GELIN WEIER HYDRODYNAMIC FORCE CONTROL TECHNOLOGY Co Ltd
Priority to CN201610253394.0A priority Critical patent/CN105757051A/en
Publication of CN105757051A publication Critical patent/CN105757051A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/26Locking mechanisms

Abstract

The invention relates to a plug-in type hydraulic lock which comprises a lock body (1), a piston (2) and control valves (3). The lock body (1) is provided with a left valve cavity, a right valve cavity and multiple oil ports. The left valve cavity and the right valve cavity are communicated with the different oil ports respectively. The control valves (3) are installed in the left valve cavity and the right valve cavity respectively. The plug-in type hydraulic lock further comprises a piston lining (4) and a piston spacer bush (5). The piston lining (4) is installed in the cavities of the lock body (1) in a matched mode. The piston (2) is installed in the piston lining (4) in a matched mode. The two ends of the piston (2) make contact with the control valves (3) through push rods. The piston spacer bush (5) is arranged between the piston lining (4) and the control valves (3). The plug-in type hydraulic lock has the advantages that the production cost is low, selectable materials of the lock body are wide in range, and the requirement for machining precision is low.

Description

A kind of plug-in hydraulic lock
Technical field
The present invention relates to technical field of hydraulic elements, particularly a kind of plug-in hydraulic lock.
Background technology
Bidirectional hydraulic lock is widely used in the hydraulic control systems such as machine tool hydraulic station, construction machinery hydraulic system, Agricultural Machinery Hydraulic Systems, handling machinery, it is mainly used to prevent actuator from misoperation occurring under the effect of external force, when its operation principle is an oil pocket forward oil-feed, another chamber is reversely fuel-displaced, vice versa, when two chamber forward not oil-feeds, reversely also obstructed, do not disturbed by external load, play the effect of lock.Usually import and export one bidirectional hydraulic lock of concatenation in actuator (oil cylinder and motor etc.), so that no matter actuator is parked in any position and can keep.It is generally adopted one-way valve structures, is installed on inside lock body by spool, and is pushed open left and right valve realized the break-make of oil circuit by piston moving back and forth in lock body.But, in prior art, piston slides in lock body piston hole, it is desirable to the machining accuracy of lock body piston hole is high, and the material of lock body is had heat treatment requirements;The lock body processing technology of this structure requires height, and production cost is high, after leakage occurs, and later maintenance difficulty.
Summary of the invention
It is an object of the invention to overcome the shortcoming of prior art, it is provided that a kind of production cost is low, be easy to making and the plug-in hydraulic lock safeguarded.
The purpose of the present invention is achieved through the following technical solutions: a kind of plug-in hydraulic lock, it includes lock body, piston and control valve, described lock body is provided with left valve pocket, right valve chamber and multiple hydraulic fluid port, described left valve pocket connects from different hydraulic fluid ports respectively with right valve chamber, in described left valve pocket and right valve chamber, control valve is installed respectively, it also includes piston bushing and piston spacer, described piston bushing coordinates in the cavity being arranged on lock body, described piston cooperation is arranged in piston bushing, and piston two ends are contacted with controlling valve by push rod, described piston spacer is arranged on piston bushing and controls between valve.
Preferably, described hydraulic fluid port includes the first hydraulic fluid port, the second hydraulic fluid port, the 3rd hydraulic fluid port and the 4th hydraulic fluid port, and described left valve pocket connects with the first hydraulic fluid port and the 3rd hydraulic fluid port respectively, and described right valve chamber connects with the second hydraulic fluid port and the 4th hydraulic fluid port respectively.
Preferably, the first described hydraulic fluid port and the second hydraulic fluid port are just right with piston spacer.
Preferably, described control valve is check valve, it includes spring base, valve body, spool and spring, described spring base cooperation is arranged in valve pocket, described valve body cooperation mounts elastically, described spool coordinates in the cavity being arranged on valve body, and one end of described spring is fixed on spring base, and the other end of spring is fixed on spool.
Preferably, described piston spacer is provided with radial direction through hole.
Preferably, the arranged outside of described piston spacer has cannelure.
Preferably, it is provided with sealing member between described piston and piston bushing.
The piston that the invention have the advantages that in the present invention does not directly contact with lock body, but between piston with lock body, devise corresponding piston bushing and piston spacer structure, piston bushing itself is easy to make, significantly high machining accuracy can be reached, thus reducing the requirement to the machining accuracy of lock body own and the strength of materials, lock body can adopt the easily rapidoprint such as aluminum, casting pig to carry out manufacturing system integrated package, reduces processing cost and the requirement to processing technique;And when leakage problem occurring after piston bushing and piston spacer life-time service, it is simple to maintenance and replacing, need relative to traditional structure, for entirety maintenance lock body, to reduce maintenance cost.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram in detailed description of the invention 1;
Fig. 2 is present configuration schematic diagram in detailed description of the invention 2;
Fig. 3 is the fundamental diagram of the present invention;
In figure: 1-lock body, 11-the first hydraulic fluid port, 12-the second hydraulic fluid port, 13-the 3rd hydraulic fluid port, 14-the 4th hydraulic fluid port, 2-piston, 3-controls valve, 31-spring base, 32-valve body, 33-spool, 34-spring, 4-piston bushing, 5-piston spacer, 51-radial direction through hole, 52-cannelure, 6-sealing member.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, but protection scope of the present invention is not limited to the following stated.
[detailed description of the invention 1]
As shown in figures 1 and 3, a kind of plug-in hydraulic lock, it includes lock body 1, piston 2, controls valve 3, piston bushing 4 and piston spacer 5, and lock body 1 can adopt the easily rapidoprint such as aluminum, casting pig to make, and the strength of materials and requirement on machining accuracy is not high.
Being provided with left valve pocket, right valve chamber, the first hydraulic fluid port the 11, second hydraulic fluid port the 12, the 3rd hydraulic fluid port 13 and the 4th hydraulic fluid port 14 on described lock body 1, left valve pocket connects with the first hydraulic fluid port 11 and the 3rd hydraulic fluid port 13 respectively, and right valve chamber connects with the second hydraulic fluid port 12 and the 4th hydraulic fluid port 14 respectively.Being provided with control valve 3 in described left valve pocket and right valve chamber respectively, controlling valve 3 is 08-02 check valve, and it includes spring base 31, valve body 32, spool 33 and spring 34;Described spring base 31 cooperation is arranged in valve pocket, it is provided with sealing device between spring base 31 and valve pocket, valve body 32 cooperation is arranged on spring base 31, the front end outer side of valve body 32 coordinates installation with valve pocket, and mating surface place is provided with sealing device, described spool 33 coordinates in the cavity being arranged on valve body 32, and one end of described spring 34 is fixed on spring base 31, and the other end of spring 34 is fixed on spool 33.Described piston bushing 4 coordinates in the cavity being arranged on lock body 1, piston 2 cooperation is arranged in piston bushing 4, and piston 2 two ends are contacted with controlling valve 3 by push rod, described piston spacer 5 is arranged on piston bushing 4 and controls between valve 3, and piston spacer 5 and the first hydraulic fluid port 11 and the second hydraulic fluid port 12 just right, being provided with radial direction through hole 51 on piston spacer 5, the arranged outside of piston spacer 5 has cannelure 52.
[detailed description of the invention 2]
This detailed description of the invention and detailed description of the invention 1 are different in that: be additionally provided with sealing member 6 between described piston 2 and piston bushing 4, its structure as in figure 2 it is shown, its operation principle as shown in Figure 3.
The work process of the present invention is as follows:
When first hydraulic fluid port the 11, second hydraulic fluid port 12 does not have pressure, the spool 33 of check valve 3 is pressed in the front end of valve body 32 under spring 34 acts on, 3rd hydraulic fluid port the 13, the 4th hydraulic fluid port 14 disconnects with first hydraulic fluid port the 11, second hydraulic fluid port 12 respectively, keeps the pressure of the 3rd hydraulic fluid port 13 and the 4th hydraulic fluid port 14;
When the first hydraulic fluid port 11 cut-in pressure oil, when the fuel tank of the second hydraulic fluid port 12 connection does not have pressure, under the effect of pressure oil, piston 2 moves right, its push rod pushes the spool 33 of right-hand member check valve 3 open, 4th hydraulic fluid port 14 and the second hydraulic fluid port 12 connect oil sump tank, and the spool 33 of left end check valve 3 pushed open by the pressure oil of the first hydraulic fluid port 11, flows to the 3rd hydraulic fluid port 13;
When the second hydraulic fluid port 12 cut-in pressure oil, when the fuel tank of the first hydraulic fluid port 11 connection does not have pressure, under the effect of pressure oil, Double-hydraulic lock piston 4 is moved to the left, its push rod pushes the spool 33 of left end check valve 3 open, 3rd hydraulic fluid port 13 and the first hydraulic fluid port 11 connect oil sump tank, and the spool 33 of right-hand member check valve 3 pushed open by the pressure oil of the second hydraulic fluid port 12, flows to the 4th hydraulic fluid port 14.

Claims (7)

1. a plug-in hydraulic lock, it includes lock body (1), piston (2) and control valve (3), described lock body (1) is provided with left valve pocket, right valve chamber and multiple hydraulic fluid port, described left valve pocket connects from different hydraulic fluid ports respectively with right valve chamber, control valve (3) is installed in described left valve pocket and right valve chamber respectively, it is characterized in that: it also includes piston bushing (4) and piston spacer (5), described piston bushing (4) coordinates in the cavity being arranged on lock body (1), described piston (2) cooperation is arranged in piston bushing (4), and piston (2) two ends are contacted with controlling valve (3) by push rod, described piston spacer (5) is arranged on piston bushing (4) and controls between valve (3).
2. a kind of plug-in hydraulic lock according to claim 1, it is characterized in that: described hydraulic fluid port includes the first hydraulic fluid port (11), the second hydraulic fluid port (12), the 3rd hydraulic fluid port (13) and the 4th hydraulic fluid port (14), described left valve pocket connects with the first hydraulic fluid port (11) and the 3rd hydraulic fluid port (13) respectively, and described right valve chamber connects with the second hydraulic fluid port (12) and the 4th hydraulic fluid port (14) respectively.
3. a kind of plug-in hydraulic lock according to claim 2, it is characterised in that: described the first hydraulic fluid port (11) and the second hydraulic fluid port (12) are just right with piston spacer (5).
4. a kind of plug-in hydraulic lock according to claim 1, it is characterized in that: described control valve (3) is check valve, it includes spring base (31), valve body (32), spool (33) and spring (34), described spring base (31) cooperation is arranged in valve pocket, described valve body (32) cooperation is arranged on spring base (31), described spool (33) coordinates in the cavity being arranged on valve body (32), one end of described spring (34) is fixed on spring base (31), and the other end of spring (34) is fixed on spool (33).
5. a kind of plug-in hydraulic lock according to claim 1, it is characterised in that: described piston spacer (5) is provided with radial direction through hole (51).
6. a kind of plug-in hydraulic lock according to claim 1, it is characterised in that: the arranged outside of described piston spacer (5) has cannelure (52).
7. a kind of plug-in hydraulic lock according to claim 1, it is characterised in that: it is provided with sealing member (6) between described piston (2) and piston bushing (4).
CN201610253394.0A 2016-04-22 2016-04-22 Plug-in type hydraulic lock Pending CN105757051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610253394.0A CN105757051A (en) 2016-04-22 2016-04-22 Plug-in type hydraulic lock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610253394.0A CN105757051A (en) 2016-04-22 2016-04-22 Plug-in type hydraulic lock

Publications (1)

Publication Number Publication Date
CN105757051A true CN105757051A (en) 2016-07-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610253394.0A Pending CN105757051A (en) 2016-04-22 2016-04-22 Plug-in type hydraulic lock

Country Status (1)

Country Link
CN (1) CN105757051A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499688A (en) * 2016-12-20 2017-03-15 湖南鸿辉科技有限公司 A kind of garbage-compressing control integral multitandem valve and control method

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB957851A (en) * 1961-04-27 1964-05-13 Instag A G Suhr Ag Improvements in or relating to hydraulic gears
DE10120642A1 (en) * 2000-12-13 2002-06-27 Mannesmann Rexroth Ag Locking valve including two no-return valves has push-up piston made of plastic in sealing region
CN201021682Y (en) * 2007-03-14 2008-02-13 北京航天发射技术研究所 High performance sealing hydraulic pressure lock
CN201433950Y (en) * 2009-04-10 2010-03-31 竺浩君 Bidirectional hydraulic lock for connecting pipelines with pressure maintaining effect
CN201851413U (en) * 2010-11-03 2011-06-01 天地上海采掘装备科技有限公司 One-way throttling hydraulic lock
CN202251175U (en) * 2011-09-28 2012-05-30 冯振强 Extra-high-pressure bidirectional hydraulic lock
CN202851488U (en) * 2012-11-07 2013-04-03 常德中联重科液压有限公司 Bi-direction hydraulic lock and landing leg control system and construction vehicle
CN203835861U (en) * 2014-04-29 2014-09-17 象山搏远智能科技有限公司 Hydraulic cylinder locking device
CN104533873A (en) * 2015-01-05 2015-04-22 江苏真绩机械制造有限公司 Two-way self-locking hydraulic cylinder
CN205533542U (en) * 2016-04-22 2016-08-31 青神格林维尔流体动力控制技术有限公司 Cartridge formula hydraulic pressure lock

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB957851A (en) * 1961-04-27 1964-05-13 Instag A G Suhr Ag Improvements in or relating to hydraulic gears
DE10120642A1 (en) * 2000-12-13 2002-06-27 Mannesmann Rexroth Ag Locking valve including two no-return valves has push-up piston made of plastic in sealing region
CN201021682Y (en) * 2007-03-14 2008-02-13 北京航天发射技术研究所 High performance sealing hydraulic pressure lock
CN201433950Y (en) * 2009-04-10 2010-03-31 竺浩君 Bidirectional hydraulic lock for connecting pipelines with pressure maintaining effect
CN201851413U (en) * 2010-11-03 2011-06-01 天地上海采掘装备科技有限公司 One-way throttling hydraulic lock
CN202251175U (en) * 2011-09-28 2012-05-30 冯振强 Extra-high-pressure bidirectional hydraulic lock
CN202851488U (en) * 2012-11-07 2013-04-03 常德中联重科液压有限公司 Bi-direction hydraulic lock and landing leg control system and construction vehicle
CN203835861U (en) * 2014-04-29 2014-09-17 象山搏远智能科技有限公司 Hydraulic cylinder locking device
CN104533873A (en) * 2015-01-05 2015-04-22 江苏真绩机械制造有限公司 Two-way self-locking hydraulic cylinder
CN205533542U (en) * 2016-04-22 2016-08-31 青神格林维尔流体动力控制技术有限公司 Cartridge formula hydraulic pressure lock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499688A (en) * 2016-12-20 2017-03-15 湖南鸿辉科技有限公司 A kind of garbage-compressing control integral multitandem valve and control method

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Application publication date: 20160713

RJ01 Rejection of invention patent application after publication