CN106762963A - A kind of anti-leakage device of hydraulic cylinder - Google Patents

A kind of anti-leakage device of hydraulic cylinder Download PDF

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Publication number
CN106762963A
CN106762963A CN201710140759.3A CN201710140759A CN106762963A CN 106762963 A CN106762963 A CN 106762963A CN 201710140759 A CN201710140759 A CN 201710140759A CN 106762963 A CN106762963 A CN 106762963A
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CN
China
Prior art keywords
cylinder
guide pin
pin bushing
dynamic sealing
static seal
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.)
Granted
Application number
CN201710140759.3A
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Chinese (zh)
Other versions
CN106762963B (en
Inventor
张凤林
姜孝飞
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.)
China Building Materials (luoyang) Energy Saving Technology Co Ltd
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China Building Materials (luoyang) Energy Saving Technology Co Ltd
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Application filed by China Building Materials (luoyang) Energy Saving Technology Co Ltd filed Critical China Building Materials (luoyang) Energy Saving Technology Co Ltd
Priority to CN201710140759.3A priority Critical patent/CN106762963B/en
Publication of CN106762963A publication Critical patent/CN106762963A/en
Application granted granted Critical
Publication of CN106762963B publication Critical patent/CN106762963B/en
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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
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423Component parts; Constructional details
    • F15B15/1471Guiding means other than in the end cap
    • 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
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423Component parts; Constructional details
    • 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

Abstract

The present invention relates to a kind of anti-leakage device of hydraulic cylinder, the device is provided with cylinder body, guide pin bushing, card key, piston rod, first dynamic sealing, second dynamic sealing, first static seal and second static seal, the guide pin bushing is arranged in cylinder body and is fixedly connected with cylinder body by card key, sealed by first dynamic sealing and second dynamic sealing between piston rod and guide pin bushing, sealed by first static seal and second static seal between cylinder body and guide pin bushing, the present invention can be during piston rod packing be slowly worn and torn, slight leakage of oil can be avoided to flow to and influenceed in equipment equipment cleaning operation, the service life of sealing is greatly prolonged simultaneously, extension maintenance cycle;And hydraulic cylinder sealing failure of removal can be in time found, accomplish to prepare in advance, accurate maintenance.

Description

A kind of anti-leakage device of hydraulic cylinder
Technical field
The present invention relates to materials for wall product stacking machine tong lifting hydraulic cylinder technical field, specifically a kind of liquid The anti-leakage device of cylinder pressure.
Background technology
Hydraulic cylinder is widely used in the industrial production as the action executing element in hydraulic system.Hydraulic cylinder is continuous During stretching out, retracting, there is relative motion between piston rod and piston rod packing, especially in installment state vertically downward Under, during piston rod dynamic sealing slowly abrasion, seepage fluid is often flowed in equipment, has a strong impact on equipment cleaning fortune OK, hydraulic cylinder premature failure and frequently maintenance replacing are caused.In order to avoid dynamic sealing leaks at hydraulic cylinder piston rod, prior art Also have using the structure of two seals, the purpose of this kind of structure is to cause hydraulic cylinder direct after avoiding first dynamic sealing failure Failure.The problem that this structure is present is:If first dynamic sealing works well, second dynamic sealing is in insufficient lubrication State and premature deterioration, when first dynamic sealing fails, second dynamic sealing does not have sealing function yet;, whereas if the One dynamic sealing effect is not so good, then second dynamic sealing is directly in working condition, does not just have the standby work for preventing from leaking With.
The content of the invention
There is easily directly failure and do not have sealing and make in the sealing structure at above-mentioned existing hydraulic cylinder piston rod Problem, the present invention provides a kind of anti-leakage device of hydraulic cylinder.
In order to solve the above technical problems, the technical solution adopted by the present invention is:
A kind of anti-leakage device of hydraulic cylinder, the device is provided with cylinder body, guide pin bushing, card key, piston rod, first dynamic sealing, second Dynamic sealing, first static seal and second static seal, the guide pin bushing are arranged in cylinder body and are fixed by card key and cylinder body and connected Connect, sealed by first dynamic sealing and second dynamic sealing between piston rod and guide pin bushing, pass through between cylinder body and guide pin bushing First static seal and second static seal are sealed, in the guide pin bushing between first dynamic sealing and second dynamic sealing Surface is provided with annular collection trough I, and the guide pin bushing outer surface between first static seal and second static seal is provided with ring Shape collecting tank II, is provided with through hole I between annular collection trough I and annular collection trough II, the cylinder body corresponding with annular collection trough II Through hole II is provided with, the outside of through hole II is connected with joint, joint is connected by drainage tube with leakage of oil collection vessel.
Switch valve is provided between the joint and drainage tube.
Beneficial effects of the present invention:
The anti-leakage device of hydraulic cylinder that the present invention is provided, by the guide pin bushing surface between twice dynamic sealing and twice static seal Annular collection trough is respectively provided with, and through hole is set between two annular collection troughs, and collected with annular on guide pin bushing outer surface Through hole is set on the corresponding cylinder body of groove, is connected between two through holes and is connected with leakage of oil collection vessel by drainage tube; During slowly being worn and torn in piston rod packing, slight leakage of oil can be avoided to flow to influences equipment cleaning in equipment Operation, while greatly prolonging the service life of sealing, extends maintenance cycle;And can in time find hydraulic cylinder sealing failure of removal, Accomplish to prepare in advance, accurate maintenance.
Brief description of the drawings
Fig. 1 schematic structural views of the invention;
Fig. 2 partial structurtes enlarged drawings of the present invention;
Reference:1st, cylinder body, 2, guide pin bushing, 3, card key, 4, piston rod, 5, first dynamic sealing, 6, second dynamic sealing, 7, First static seal, 8, second static seal, 9, joint, 10, switch valve, 11, draw oil pipe, 12, leakage of oil collection vessel, 13, Annular collection trough I, 14, annular collection trough II, 15, through hole I, 16, through hole II.
Specific embodiment
With reference to specific embodiment, the present invention is further elaborated.
As shown in the figure:A kind of anti-leakage device of hydraulic cylinder, the device is provided with cylinder body 1, guide pin bushing 2, card key 3, piston rod 4, One dynamic sealing 5, second dynamic sealing 6, first static seal 7 and second static seal 8, the guide pin bushing 2 are arranged in cylinder body 1 And be fixedly connected with cylinder body 1 by card key 3, first dynamic sealing 5 and second dynamic sealing 6 are passed through between piston rod 4 and guide pin bushing 2 Sealed, sealed by first static seal 7 and second static seal 8 between cylinder body 1 and guide pin bushing 2, described first The inner surface of guide pin bushing 2 between dynamic sealing 5 and second dynamic sealing 6 is provided with annular collection trough I 13, first static seal 7 And the outer surface of guide pin bushing 2 between second static seal 8 is provided with annular collection trough II 14, annular collection trough I 13 is collected with annular Through hole I 15 is provided between groove II 14, the cylinder body 1 corresponding with annular collection trough II 14 is provided with through hole II 16, the through hole I 15 With the same side that through hole II 16 is arranged on cylinder body 1, the outside of through hole II 16 is connected with joint 9, and joint 9 is by drainage tube 11 and oozes Leakage oil collection container 12 is connected;Switch valve 10 is provided between the joint 9 and drainage tube 11.
Hydraulic cylinder prevents that the principle for leaking is as follows:When hydraulic cylinder starts to come into operation, it is necessary to pass through drain path to first Annular collection trough filling lubricating oil between road dynamic sealing 5 and second dynamic sealing 6, so that second dynamic sealing 6 lubricates well. In use, when leakage occurs in first dynamic sealing 5, leakage fluid can be by the annular collection trough I of the inner surface of guide pin bushing 2 13 flow to the through hole I 15 on guide pin bushing 2, and the annular collection trough II 14 of its outer surface is flow to by guide pin bushing 2 through hole I 15, so External lug 9 is flow to by the through hole II 16 on cylinder body 1 afterwards, and by switch valve 10, draw oil pipe 11 and flow to leakage of oil and collect and hold Device 12, effectively prevent slight leakage of oil and flows to influence equipment cleaning operation in equipment, while drawing oil pipe 11 by close observation In fluid leak magnitude, so as to judge the abrasion condition of first dynamic sealing 5 on hydraulic cylinder, and then judge whether to need more Change.When leakage is slight, can in advance prepare spare part so that replacing is used.When seepage is more serious, switch valve 10 can be closed Close, second dynamic sealing 6 is come into operation, it is ensured that the normal of hydraulic cylinder is used, and extends maintenance cycle, substantially prolongs sealing Service life.Once occurring leaking during being continuing with, then whole dynamic sealings are changed immediately.
Above-mentioned all parts constitute the present invention and be able to can be avoided slight during piston rod packing is slowly worn and torn Leakage of oil is flowed to and influenceed in equipment equipment cleaning operation, while greatly prolonging the service life of sealing, extends maintenance cycle.And energy Hydraulic cylinder sealing failure of removal is found in time, accomplishes to prepare in advance, accurate maintenance.

Claims (2)

1. a kind of anti-leakage device of hydraulic cylinder, the device is provided with cylinder body(1), guide pin bushing(2), card key(3), piston rod(4), first Dynamic sealing(5), second dynamic sealing(6), first static seal(7)And second static seal(8), the guide pin bushing(2)It is arranged on Cylinder body(1)It is interior and by card key(3)With cylinder body(1)It is fixedly connected, piston rod(4)With guide pin bushing(2)Between it is dynamic close by first Envelope(5)With second dynamic sealing(6)Sealed, cylinder body(1)With guide pin bushing(2)Between pass through first static seal(7)With second Road static seal(8)Sealed, it is characterised in that:First dynamic sealing(5)With second dynamic sealing(6)Between guide pin bushing (2)Inner surface is provided with annular collection trough I(13), first static seal(7)With second static seal(8)Between guide pin bushing (2)Outer surface is provided with annular collection trough II(14), annular collection trough I(13)With annular collection trough II(14)Between be provided with through hole Ⅰ(15), with annular collection trough II(14)Corresponding cylinder body(1)It is provided with through hole II(16), through hole II(16)Outside with connect Head(9)Connection, joint(9)By drainage tube(11)With leakage of oil collection vessel(12)Connection.
2. the anti-leakage device of hydraulic cylinder as claimed in claim 1, it is characterised in that:The joint(9)With drainage tube(11)It Between be provided with switch valve(10).
CN201710140759.3A 2017-03-10 2017-03-10 A kind of anti-leakage device of hydraulic cylinder Active CN106762963B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710140759.3A CN106762963B (en) 2017-03-10 2017-03-10 A kind of anti-leakage device of hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710140759.3A CN106762963B (en) 2017-03-10 2017-03-10 A kind of anti-leakage device of hydraulic cylinder

Publications (2)

Publication Number Publication Date
CN106762963A true CN106762963A (en) 2017-05-31
CN106762963B CN106762963B (en) 2019-01-15

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Family Applications (1)

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CN201710140759.3A Active CN106762963B (en) 2017-03-10 2017-03-10 A kind of anti-leakage device of hydraulic cylinder

Country Status (1)

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CN (1) CN106762963B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005221069A (en) * 2003-06-20 2005-08-18 Honda Motor Co Ltd Structure and method of detecting cylinder leak
CN101725588A (en) * 2009-11-10 2010-06-09 武汉科技大学 Hydraulic cylinder with clearance sealed type deformed piston
CN202520688U (en) * 2012-02-17 2012-11-07 常州海宏液压设备有限公司 Rolling machine hydraulic oil cylinder capable of prolonging service life
CN105864148A (en) * 2016-05-10 2016-08-17 燕山大学 Qualified measuring device and method of leakage rate of sealing rings for hydraulic cylinder
CN206608398U (en) * 2017-03-10 2017-11-03 中建材(洛阳)节能科技有限公司 A kind of anti-leakage device of hydraulic cylinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005221069A (en) * 2003-06-20 2005-08-18 Honda Motor Co Ltd Structure and method of detecting cylinder leak
CN101725588A (en) * 2009-11-10 2010-06-09 武汉科技大学 Hydraulic cylinder with clearance sealed type deformed piston
CN202520688U (en) * 2012-02-17 2012-11-07 常州海宏液压设备有限公司 Rolling machine hydraulic oil cylinder capable of prolonging service life
CN105864148A (en) * 2016-05-10 2016-08-17 燕山大学 Qualified measuring device and method of leakage rate of sealing rings for hydraulic cylinder
CN206608398U (en) * 2017-03-10 2017-11-03 中建材(洛阳)节能科技有限公司 A kind of anti-leakage device of hydraulic cylinder

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