CN104704248B - Hydraulic cylinder - Google Patents
Hydraulic cylinder Download PDFInfo
- Publication number
- CN104704248B CN104704248B CN201380052248.6A CN201380052248A CN104704248B CN 104704248 B CN104704248 B CN 104704248B CN 201380052248 A CN201380052248 A CN 201380052248A CN 104704248 B CN104704248 B CN 104704248B
- Authority
- CN
- China
- Prior art keywords
- mentioned
- side room
- hydraulic cylinder
- room
- bottom side
- 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.)
- Active
Links
Classifications
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7052—Single-acting output members
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/864—Failure of an output member, e.g. actuator or motor failure
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
A kind of single-action type hydraulic cylinder (1), carry out shrinking work in the presence of the pressure of working solution in its bar side room (6) in guiding to the bar side room (6) being separated by piston (40) and bottom side room (5) from hydraulic power source, wherein, this single-action type hydraulic cylinder (1) includes：The cylinder body (10) of tubular, it accommodates piston (40) in the way of sliding freely, and internally has bar side room (6) and bottom side room (5)；Piston rod (20), it is linked to piston (40), and protruding to the outside from cylinder body (10)；Vessel (7), it is communicated in bottom side room (5)；Fill port (26), it is used for filling lubricating fluid from outside to bottom side room (5) or vessel (7)；And closure part (14), its closure fill port (26).
Description
Technical field
The present invention relates to a kind of carry out shrinking the single-action type liquid of work by the pressurized operation liquid importing from outside hydraulic power source
Cylinder pressure.
Background technology
As this single-action type hydraulic cylinder, the inside of the cylinder body of the oil hydraulic cylinder disclosed in Japanese JP08-135609A is led
Piston is separated into the 2nd grease chamber and air chamber.
2nd grease chamber is communicated in the hydraulic power source of outside via pipe arrangement.Oil hydraulic cylinder is due to being imported into the working solution of the 2nd grease chamber
Pressure rise and carry out shrink work, on the other hand, if the reduced pressure of working solution, the work of the external force in spring etc. for the oil hydraulic cylinder
With under carry out extend work.
Air chamber leans on airport and ft connection.When oil hydraulic cylinder carries out flexible work, extraneous air is gone out by airport
Enter air chamber.
With regard to the oil hydraulic cylinder disclosed in Japanese JP08-135609A, because air chamber is communicated in outside by airport,
Therefore work halted state long lasting in the case of etc., air chamber is dried sometimes, and the working solution of air chamber becomes dry.If empty
Working solution in air chamber becomes dry, then internal rust, and the piston seal being located in main piston is fixed and is attached at the inwall of cylinder body
Face.If piston seal is attached at the internal face of cylinder body, there is the piston seal when operating again and deform and piston seal
Sealing this problem impaired of part.
Content of the invention
It is an object of the invention to provide one kind prevents internal rust and prevents piston seal from fixing and be attached at cylinder body
Internal face single-action type hydraulic cylinder.
According to some way of the present invention, provide a kind of hydraulic cylinder, it is to separate to by piston guiding from hydraulic power source
Bar side room and bottom side room in bar side room in the pressure of working solution in the presence of carry out shrinking the single-action type hydraulic cylinder of work,
Wherein, this hydraulic cylinder includes：The cylinder body of tubular, it accommodates piston in the way of sliding freely, and internally has bar side room
And bottom side room；Piston seal, it is located in piston, and is slidingly contacted at the internal face of cylinder body；Piston rod, it is linked to work
Plug, and protruding to the outside from cylinder body；Vessel, it is communicated in bottom side room；Fill port, its be used for from outside to bottom side room or
Vessel fills lubricating fluid；And closure part, it blocks fill port.
Brief description
Fig. 1 is the sectional view of the hydraulic cylinder of the 1st embodiment of the present invention.
Fig. 2 is the sectional view of the hydraulic cylinder of the 2nd embodiment of the present invention.
Fig. 3 is the sectional view of the hydraulic cylinder of the 3rd embodiment of the present invention.
Specific embodiment
Hereinafter, referring to the drawings embodiments of the present invention are illustrated.
(the 1st embodiment)
Hydraulic cylinder (oil hydraulic cylinder) 1 shown in Fig. 1 is for example installed on the working truck (omit diagram) mowed, and by with
Make the actuator that hay mover (mowing rotor) lifts.In addition it is not limited to be installed on working truck actuator it is also possible to
It is used in the actuator located at other machineries, equipment.
Mechanism's (omitting diagram) that hay mover lifts is made to include：Vehicle body side arm, it is linked to vehicle body；Hay mover side arm, its
Rotatably it is linked to vehicle body side arm, and support hay mover；Spring 2, its rotation direction pair declining to hay mover
Hay mover side arm exerts a force；And hydraulic cylinder 1, it drives hay mover side arm to the rotation direction that hay mover rises.
Hydraulic cylinder 1 is linked between the vehicle body side arm of working truck and hay mover side arm.Hydraulic cylinder 1 carries out flexible work,
Thus hay mover side arm rotates, hay mover lifts.
Hereinafter, the structure of hydraulic cylinder 1 is illustrated.Hydraulic cylinder 1 is in the working solution importing from outside hydraulic power source
If carrying out in the presence of pressure shrinking the reduced pressure of work and working solution, the spring force (external force) by spring 2 is extended
The hydraulic cylinder of the single-action type of work.
Hydraulic cylinder 1 includes：Cylindric cylinder body 10, it accommodates piston 40 in the way of sliding freely；And piston rod
20, it is protruding to the outside from cylinder body 10.
It is combined with base (bottom block) 50 in one end of cylinder body 10.Base 50 has a bracket (eye
Bracket) portion 51, and it is linked to vehicle body side arm by the pin (omitting diagram) being inserted in a bracket part 51.
It is fitted together to the cylinder cap 60 being combined with ring-type in the other end of cylinder body 10, supported piston rod 20 for sliding using cylinder cap 60
Freely.
It has been formed with a bracket part 21 in the top ends of piston rod 20.Piston rod 20 is by being inserted in a bracket part 21
Pin (omit diagram) be linked to hay mover side arm.
It is fastened with piston 40 in the base end part of the piston rod 20 being inserted in cylinder body 10 by nut 49.In piston rod 20
It is folded with o-ring 8 between the inner circumferential of base end part periphery and piston 40.Using this o-ring 8 sealing piston bar 20 and piston 40 it
Between.
The space of the inner side of cylinder body 10 is separated into bar side room 6 and bottom side room 5 by piston 40.Bar side room 6 is cylinder body 10 and lives
Space between stopper rod 20, and divide and be formed between piston 40 and cylinder cap 60.Bottom side room 5 is the sky of the inner side of cylinder body 10
Between, and divide and be formed between piston 40 and base 50.
Cylinder body 10 is for example formed by metals such as steel.
It is folded with piston seal 41 in the periphery of piston 40.By making the internal face 11 of piston seal 41 and cylinder body 10
Contact, thus sealing between bottom side room 5 and bar side room 6.
Piston seal 41 is formed by low friction resin material, but is not limited thereto, it is possible to use rubber system O-shaped
Ring etc..
It is folded with the bushing (bearing) 61 of cylindrical shape in the inner circumferential of cylinder cap 60.Using this bushing 61 by piston rod 20 to slide
Mode freely is supported on cylinder cap 60.
It is folded with primary seal 62 and the dust seal of the outer peripheral face being slidingly contacted at piston rod 20 in the inner circumferential of cylinder cap 60
Part 63.Sealed between cylinder cap 60 and piston rod 20 using primary seal 62, make bar side room 6 with respect to Exterior capsule.In addition, utilizing
Dust seal 63 prevents the entrance of dust etc..
It is combined with the port part 30 of ring-type in the periphery of the axial midway of cylinder body 10 by weld part 31.In port part
30 are formed with for the supply and discharge port 32 with respect to bar side room 6 supply and discharge working solution.It is connected with self installation in supply and discharge port 32 in work
The pipe arrangement that the hydraulic power source (not shown) of industry car extends.Working solution by hydraulic power source supply and discharge comes in and goes out supply and discharge as shown by arrows in FIG.
Port 32.
Setting up between port part 30 and cylinder cap 60 has the outer tube 35 of cylindrical shape.Divide between outer tube 35 and cylinder body 10
Go out the supply and discharge path 33 as cylindric space.
If rising from the working hydraulic pressure that hydraulic power source imports, working solution leads to from supply and discharge port 32 as shown by arrows in FIG. like that
Cross supply and discharge path 33, and self-forming is supplied to bar side room 6 in the through hole 12 of cylinder body 10.In the presence of this working hydraulic pressure, piston
Bar 20 moves in figure right direction along central axis O with respect to cylinder body 10, thus hydraulic cylinder 1 carries out shrinking work.Fig. 1 illustrates liquid
The state that cylinder pressure 1 at utmost shrinks.
On the other hand, if reducing from the working hydraulic pressure that hydraulic power source imports, the active force based on spring 2 for the piston rod 20 is relatively
Move to the left direction of in figure in cylinder body 10, hydraulic cylinder 1 carries out extending work.When carrying out this elongation work, the work of bar side room 6
Make liquid as shown by arrows in FIG. like that by through hole 12, supply and discharge path 33, supply and discharge port 32 and to hydraulic power source discharge.
Use oil as the working solution from hydraulic power source supply and discharge but it is also possible to replacing oil and using such as water in hydraulic cylinder 1
Dissolubility replaces the working solutions such as liquid.
One end of outer tube 35 is embedded in port part 30, and is combined using weld part 34.The other end of outer tube 35 screw togather and
It is incorporated into the periphery threaded portion of cylinder cap 60.
It is folded with o-ring 64 between outer tube 35 and cylinder cap 60.Using this o-ring 64 sealed outer pipe 35 and cylinder cap 60 it
Between, make supply and discharge path 33 with respect to Exterior capsule.
Form spiral helicine spring slot 36 in the periphery of outer tube 35.Spring 2 is formed as helical form, one end of spring 2
It is wound in spiral helicine spring slot 36, thus being linked to outer tube 35.The other end of spring 2 is linked to the top of piston rod 20
Side.Piston rod 20 is exerted a force in the presence of its spring force by spring 2 to the direction prominent from cylinder body 10.
Hydraulic cylinder 1 possesses the container tube 25 round cylinder body 10 configuration between port part 30 and base 50.In cylinder body
It is provided with vessel 7 between 10 and container tube 25.
Form the through hole 13 that bottom side room 5 is connected with vessel 7 in cylinder body 10.Even if as shown in figure 1, through hole 13 is being lived
The position that stopper rod 20 is in stroke end, hydraulic cylinder 1 also will not be blocked by piston 40 in the state of being at utmost contraction state
Opening.
Vessel 7 divides the space being formed as cylindric between container tube 25 and cylinder body 10.Base 50 and port part
30 become the wall portion dividing the ring-type at axial two ends forming vessel 7.
Appearance is arbitrarily set according to the feasible value of pressure produced by bottom side room 5 when hydraulic cylinder 1 carries out flexible work
Device room 7 and the volumetric ratio of bottom side room 5.Determine the volume of vessel 7 according to the internal diameter of container tube 25.
Base 50 have be linked to vehicle body side arm have a bracket part 51 and round have a bracket part 51 project ring
The flange part 52 of shape.
It is formed with chimeric recess 53 in the middle position of the radial direction of the end face of the flange part 52 of base 50.In chimeric recess 53
It is fixed with cylinder body 10.
It is formed with chimeric recess 54 in the outer fix of the radial direction of the end face of the flange part 52 of base 50.In chimeric recess 54
Chimeric one end having container tube 25, and combined using weld part 43.The other end of container tube 25 be formed at port part 30
Chimeric recess 39 is fitted together to, and is combined using weld part 42.
Hydraulic cylinder 1 include running through container tube 25 and to the fill port 26 of vessel 7 opening and closure fill port 26
Closure part 14.
Closure part 14 includes：Filling pipe 15, it is incorporated into the periphery of container tube 25 by weld part 16；Adjusting screw
17, it is screwed together in filling pipe 15；And ball 18, it is adjusted the inner peripheral surface that screw 17 presses on the taper of filling pipe 15.?
Filling pipe 15 is formed with towards the steam vent 19 of opening between adjusting screw 17 and ball 18.Additionally, closure part 14 not office
It is limited to said structure, for example, can also be the drain plug (key) of the fill port 26 being screwed together in container tube 25.
When manufacturing hydraulic cylinder 1, from fill port 26, the lubricating fluid of scheduled volume is filled into vessel 7.This lubricating fluid makes
With with from hydraulic power source with respect to hydraulic cylinder 1 supply and discharge working solution identical oil.Additionally, lubricating fluid is not limited thereto, also may be used
With using the lubricating fluid different from working solution.
The hydraulic cylinder 1 of manufacture is assembled between the vehicle body side arm of working truck and hay mover side arm together with spring 2.
When working truck is operated, if hydraulic cylinder 1 becomes the state at utmost shunk shown in Fig. 1, mow
Pusher side arm rotates upward, becomes the state making hay mover be maintained at lifting position.
Hydraulic cylinder 1 elongation work is made to make hay mover in the case of ground, the operation using driver makes from liquid
The working hydraulic pressure that potential source is directed to the bar side room 6 of hydraulic cylinder 1 reduces.Thus, hydraulic cylinder 1 is in the presence of the spring force of spring 2
Carry out extending work, the working solution of bar side room 6 pass through through hole 12, supply and discharge path 33, supply and discharge port 32 and to hydraulic power source outflow.
Additionally, hydraulic cylinder 1 is not limited to carry out by the spring force of spring 2 extending work, for example, can also make by right
The external force such as the gravity that hay mover side arm applies carry out extending the structure of work.In the feelings that the gravity that hay mover side arm is applied is larger
It is also possible to make the spring force of paired hay mover side arm force application spring 2 so that the structure that rotates of the direction that ramps up of hay mover under condition.
Make hydraulic cylinder 1 carry out to shrink work and in the case of making hay mover leave ground, by driver operation from liquid
The working hydraulic pressure that potential source is directed to hydraulic cylinder 1 raises.Thus, working solution by supply and discharge port 32, supply and discharge path 33, through hole 12 and
Flow into bar side room 6, hydraulic cylinder 1 overcomes the spring force of spring 2 to carry out shrinking work.
When hydraulic cylinder 1 so carries out flexible work, the lubricating fluid being present in bottom side room 5 is in piston 40 and cylinder body 10
The sliding contact portion of wall 11 is lubricated.Thus, piston 40 swimmingly slides.
Due to bottom side room 5 by closure part 14 with respect to Exterior capsule, therefore slide and the appearance of bottom side room 5 along with piston 40
Long-pending expansion is reduced, the pressure lifting of bottom side room 5.Because bottom side room 5 is communicated in vessel 7 by through hole 13, therefore along with
The volume enlargement of bottom side room 5 reduces, the gas discrepancy vessel 7 of bottom side room 5.Therefore, pressure oscillation produced by bottom side room 5 subtracts
Slow.Thus, hydraulic cylinder 1 can suppress negative pressure produced by bottom side room 5 to raise when extending work, and can lean on the spring of spring 2
Power swimmingly carries out extending work.In addition, hydraulic cylinder 1 can suppress malleation produced by bottom side room 5 to raise when shrinking work, lean on
The pressure of the working solution that piston 40 is born swimmingly carries out shrinking work.
Fill port 26 is blocked by closure part 14, airtight with respect to outside by this bottom side room 5 and vessel 7.Therefore,
It is prevented from dry, the internal lubricating fluid in bottom side room 5 to become dry, and is prevented from moisture, dust etc. entering bottom side room from outside
5.The internal face 11 that this prevents cylinder body 10 gets rusty.Therefore, it is possible to preventing piston seal 41 fixing and being attached at cylinder body 10
Internal face 11.In addition it is also possible to cancel the antirust treatment that the internal face 11 to cylinder body 10 is implemented.In addition it is suppressed that piston is close
Durability required by sealing 41 reduces, and can extend the selected scope of piston seal 41.
In keeping working truck, hydraulic cylinder 1 is set to the longest elongation state, becomes central axis O with respect to level
The posture that direction tilts, bottom side room 5 is lower than bar side room 6.In the state of hydraulic cylinder 1 obtains this keeping posture, with piston seal
At least a portion of part 41 is dipped in the loading that the mode being present in the lubricating fluid of bottom side room 5 sets lubricating fluid.
Even if in the case of long-time keeping working truck, the part due to piston seal 41 is dipped in lubricating fluid,
Fix and be attached at the internal face 11 of cylinder body 10 therefore, it is possible to prevent piston seal 41 to be dried.Thus, working truck in
In the case of operating after being taken care of for a long time, piston seal 41 can be suppressed to be attached at the internal face 11 of cylinder body 10 and become
Shape.In addition, the working solution being prevented from being supplied to bar side room 6 spills to bottom side room 5 via piston seal 41.
When working truck operates, hydraulic cylinder 1 carries out flexible work, slides with respect to cylinder body 10 along with piston 40, has
When can lead to micro working solution be produced from slip from bar side room 6 to bottom side room 5 movement leakage.Due to producing this leakage of sliding,
It is present in bottom side room 5 or the lubrication liquid measure of vessel 7 may exceed set amount and increase.Now, can in maintenance
Open fill port 26 via closure part 14, unnecessary lubricating fluid is passed through fill port 26 and discharges to outside.In addition, by slightly
Micro- unclamp adjusting screw 17, thus ball 18 leaves the inner peripheral surface of the taper of filling pipe 15, can be by fill port 26 bottom of by
The air in side room 5 or lubricating fluid are discharged from steam vent 19 to outside.
According to the working condition of hydraulic cylinder 1, the lubrication liquid measure being present in bottom side room 5 may be slightly less than set amount.Now,
Open fill port 26 in maintenance via closure part 14, from outside, lubricating fluid is added to container by fill port 26
Room 7.
For example in maintenance, in the case of supplemental lubrication liquid, hydraulic cylinder 1 is configured to its center axis O along lead
Vertical direction extends and becomes the state (posture) that piston rod 20 extends upward from the cylinder cap 60 of cylinder body 10.In this condition, setting
In the case that quantitative lubricating fluid is filled in bottom side room 5, the liquid level of lubricating fluid in container tube 25 for the fill port 26 is reached
Position opening.That is, lubricating fluid in the case of the lubricating fluid being filled with set amount in bottom side room 5 for the fill port 26
The position that liquid level is reached.So, the posture acquired in hydraulic cylinder 1 in the case of the supplemental lubrication liquid according to when be to maintain
The loading (amount set in advance) of (posture set in advance) and lubricating fluid determines 26 openings of fill port of container tube 25
Position.
It is, during maintenance from the case of fill port 26 supplemental lubrication liquid, to obtain central axis O edge in hydraulic cylinder 1
In the state of the posture that vertical extends, operator, from fill port 26 supplemental lubrication liquid, is overflowed from vessel 7 in lubricating fluid
And stop at once supplemental lubrication liquid from fill port 26 to the outside moment flowed out or from before vessel 7 overflows.So with
The mode that the liquid level of lubricating fluid reaches the vicinity of fill port 26 adjusts magnitude of recruitment, thus being easy to fill set amount to bottom side room 5
Lubricating fluid.
Additionally, for example in the large-scale hydraulic cylinder located at fork truck etc., can arranging and make the redundant work liquid of bottom side room (profit
Synovial fluid) back bar side room check valve.But, in contrast to this, it is impossible to guarantee to arrange this check valve in small-sized hydraulic cylinder 1
Space.Hydraulic cylinder 1 is tackled not to be possessed the valve members such as the check valve of supply and discharge working solution between bar side room 6 and bottom side room 5 and sets
There are fill port 26 and closure part 14.Thereby, it is possible to appropriate lubricating fluid is enclosed to bottom side room 5.
According to the 1st above embodiment, play following effect.
The sliding part of piston 40 in hydraulic cylinder 1, is lubricated using the lubricating fluid being filled into bottom side room 5 from fill port 26.
Fill port 26 is blocked by closure part 14, thus bottom side room 5 is airtight with respect to outside.Thereby, it is possible to prevent lubricating fluid from becoming dry
And internal rust, prevent piston seal 41 fixing and internal face 11 that is being attached at cylinder body 10.In addition it is also possible to cancel to cylinder body
The antirust treatment that 10 internal face 11 is implemented.In addition, the durability required by piston seal 41 can be suppressed to reduce, extension is lived
The selected scope of plug sealing member 41.
In hydraulic cylinder 1, possess the container tube 25 round cylinder body 10 configuration, and set between cylinder body 10 and container tube 25
There is vessel 7, the internal diameter therefore passing through change container tube 25 can arbitrarily set the volumetric ratio of vessel 7 and bottom side room 5.
In hydraulic cylinder 1, it is combined with the ring-type guiding the working solution with respect to bar side room 6 supply and discharge in the periphery of cylinder body 10
Port part 30, the end of container tube 25 is combined with port part 30.Therefore, it is possible to adjacent with port part 30 round
The space setting vessel 7 of cylinder body 10, inhibits the maximization of hydraulic cylinder 1 using vessel 7.
In hydraulic cylinder 1, divide form the outer tube 35 of supply and discharge path 33 with divide the container tube 25 forming vessel 7 around
Cylinder body 10 to arrange across port part 30, be linked with, in outer tube 35, the spring 2 that hydraulic cylinder 1 exerts a force to shrinkage direction.Therefore,
Spring 2 can be configured along outer tube 35, inhibit larger-scale unit using spring 2.
In hydraulic cylinder 1, possess the base 50 of the open end of closure cylinder body 10, be formed with and container tube 25 in base 50
End combine flange part 52.Form bottom side room 5 and vessel 7 therefore, it is possible to divide using common base 50, suppression
Constitute the increase of the number of components of hydraulic cylinder 1.In addition, being improved by combining the container tube 25 thicker than cylinder body 10 in base 50
The rigidity of base 50.
(the 2nd embodiment)
Next, illustrating to the 2nd embodiment of the present invention with reference to Fig. 2.Hereinafter, with above-mentioned 1st embodiment
Illustrate centered on different points, identical accompanying drawing mark is marked to the hydraulic cylinder identical structure with above-mentioned 1st embodiment
Remember and omit the description.
In the hydraulic cylinder 1 of above-mentioned 1st embodiment, it is formed with, in base 50, the flange being combined with the end of container tube 25
Portion 52.On the other hand, in the hydraulic cylinder 101 of the 2nd embodiment, adopting different from base 150 ground in the periphery of cylinder body 10
External component 110 in conjunction with ring-type and be combined with this external component 110 container tube 125 end structure this point and the 1st
The hydraulic cylinder 1 of embodiment is different.
The end of cylinder body 10 is incorporated into the periphery of base 150 using weld part 151.Base 150 is by pin (omitting diagram)
It is linked to vehicle body side arm.
External component 110 is incorporated into the periphery of cylinder body 10 using weld part 109.External component 110 is formed as cutting in L-shaped
The ring-type in face, and be formed as not blocking the open-ended through hole 13 in cylinder body 10.
Outer tube 35 is set up between port part 130 and cylinder cap 60, divides and form supply and discharge path 33 inside it.
Cylindric container tube 125 is set up in port part 130 and external component 110, divides and form container inside it
Room 7.
One end of container tube 125 is embedded in the chimeric recess 131 being formed at port part 130 by o-ring 132.Container
The other end of pipe 125 is embedded in the periphery of external component 110 by o-ring 112.
It is formed with endless groove 113 in the periphery of external component 110, and prevent by the back-up ring 108 being embedded in endless groove 113
Container tube 125 disengaging vertically.
Hydraulic cylinder 101 includes running through container tube 125 and to the fill port 126 of vessel 7 opening and blocks this filling
The closure part 114 of port 126.
Closure part 114 includes being incorporated into the filling pipe 115 of periphery of container tube 125 by weld part 116 and is screwed together in
The drain plug 117 of this filling pipe 115.
In the case of being supplemental lubrication liquid during maintenance, hydraulic cylinder 101 only carries out extending work with predetermined stroke, obtains
Central axis is taken to tilt at a predetermined angle with respect to O horizontal direction and bottom side room 5 posture lower than bar side room 6.In hydraulic cylinder
In the state of 101 obtain this posture, in the case that bottom side room 5 has been filled with the lubricating fluid of set amount, fill port 126 exists
The position opening that the liquid level of the lubricating fluid in container tube 125 is reached.By changing the rotation that container tube 125 is with respect to cylinder body 10
Position simultaneously changes the height and position of fill port 126, can change the setting value of the loading of lubricating fluid.
According to the 2nd above embodiment, play following effect.
The slip of piston 40 in hydraulic cylinder 101, is lubricated using the lubricating fluid being filled into bottom side room 5 from fill port 126
Portion.Fill port 126 is blocked by closure part 114, airtight with respect to outside by this bottom side room 5.Thereby, it is possible to prevent lubricating fluid
Become dry and internal rust, prevent piston seal 41 fixing and internal face 11 that is being attached at cylinder body 10.
Possess the external component 110 of the periphery being incorporated into cylinder body 10 in hydraulic cylinder 101, be combined with external component 110
The end of container tube 125.Therefore, it is possible to arrange the vessel 7 of predetermined volumes round cylinder body 10.In addition, according to specification, passing through
Dismantle back-up ring 108 and take off container tube 125, vessel 7 can be cancelled.
(the 3rd embodiment)
Next, illustrating to the 3rd embodiment of the present invention with reference to Fig. 3.Hereinafter, with above-mentioned 1st embodiment
Illustrate centered on different points, identical accompanying drawing mark is marked to the hydraulic cylinder identical structure with above-mentioned 1st embodiment
Remember and omit the description.
In the hydraulic cylinder 1 of above-mentioned 1st embodiment, it is to be provided with appearance using the container tube 25 configuring round cylinder body 10
The structure of device room 7.On the other hand, in the hydraulic cylinder 201 of the 3rd embodiment, piston rod 220 be formed as hollow tubular,
And the inner side of piston rod 220 be provided with vessel 207 structure this point different from the hydraulic cylinder 1 of the 1st embodiment.
Hydraulic cylinder 201 includes the cylinder body 210 of tubular accommodating piston 240 in the way of sliding freely and from cylinder body
210 piston rods 220 protruding to the outside.Be formed with a bracket part 221 in the top ends of piston rod 220, have a bracket part 221 with
Hay mover side arm 13 links.It is formed with a bracket part 251 in the base end part of cylinder body 210, have a bracket part 251 with vehicle body side arm even
Knot.It is provided with the spring (omitting diagram) that piston rod 220 exerts a force to the direction prominent from cylinder body 210 round cylinder body 210.
It is provided with piston 240 in the base end part of the piston rod 220 being inserted in cylinder body 210.The space quilt of the inner side of cylinder body 210
Piston 240 is separated into bar side room 206 and bottom side room 205.It is folded with piston seal 241 in the periphery of piston 240.Piston seal
Part 241 is contacted with the internal face 211 of cylinder body 210, thus being sealed between bottom side room 205 and bar side room 206.
Divide in the inner side of cylindric piston rod 220 and be formed with vessel 207.The cardinal extremity of piston rod 220 is to bottom side room
205 openings.Vessel 207 is connected via the cardinal extremity (peristome) of piston rod 220 with bottom side room 205.
Form the supply and discharge port 232 of oriented bar side room 206 opening in cylinder body 210.It is connected with from liquid in this supply and discharge port 232
The pipe arrangement that potential source extends.Come in and gone out as shown by arrows in FIG. supply and discharge port 232 using the working solution of hydraulic power source supply and discharge.
Form the fill port 226 of oriented bottom side room 205 opening in cylinder body 210, and be provided with this fill port 226 of closure
Closure part 214.
Closure part 214 includes being incorporated into the filling pipe 215 of the periphery of cylinder body 210 and is blocked in the way of can loading and unloading
The drain plug 217 of this filling pipe 215.
In the case of being supplemental lubrication liquid during maintenance, hydraulic cylinder 201 only carries out extending work with predetermined stroke, obtains
Its center axis O are taken to tilt at a predetermined angle with respect to horizontal direction and bottom side room 205 posture lower than bar side room 206.In liquid
In the state of cylinder pressure 201 obtains this posture, in the case of being to be filled with the lubricating fluid of set amount in bottom side room 205, filled end
The position opening that the liquid level of mouth 226 lubricating fluids in cylinder body 210 is reached.
According to the 3rd above embodiment, play following effect.
The cunning of piston 240 in hydraulic cylinder 201, is lubricated using the lubricating fluid being filled into bottom side room 205 from fill port 226
Dynamic portion.Fill port 226 is blocked by closure part 214, thus bottom side room 205 is airtight with respect to outside.Thereby, it is possible to prevent from moistening
Synovial fluid becomes dry and internal rust, prevents piston seal 241 fixing and internal face 211 that is being attached at cylinder body 210.
In hydraulic cylinder 201, piston rod 220 is formed as the tubular of hollow, and is provided with vessel in the inner side of piston rod 220
207.Therefore, it is achieved that miniaturization and lightness compared with situation about arranging round cylinder body with vessel.
This concludes the description of embodiments of the present invention, but the above-mentioned embodiment only application examples of the present invention
A part, rather than protection scope of the present invention is particularly limited to the meaning of above-mentioned embodiment.
Can also using by divide formed vessel container located at the outside of cylinder body and this container inside vessel with
The structure that bottom side room inside cylinder body is connected via pipe arrangement.
Claims (7)
1. a kind of hydraulic cylinder, it is the above-mentioned bar side in guiding to the bar side room being separated by piston and bottom side room from hydraulic power source
Carry out in the presence of the pressure of the working solution in room shrinking work single-action type hydraulic cylinder, wherein, this hydraulic cylinder includes：
The cylinder body of tubular, it accommodates piston in the way of sliding freely, and internally has above-mentioned bar side room and above-mentioned bottom
Side room；
Piston seal, it is located in above-mentioned piston, and is slidingly contacted at the internal face of above-mentioned cylinder body；
Piston rod, it is linked to above-mentioned piston, and protruding to the outside from above-mentioned cylinder body；
Vessel, it is communicated in above-mentioned bottom side room；
Fill port, it is used for filling lubricating fluid from outside to above-mentioned bottom side room or said vesse room；
Closure part, it blocks above-mentioned fill port；And
Container tube, round the configuration of above-mentioned cylinder body,
It is provided with said vesse room between above-mentioned cylinder body and said vesse pipe,
Along with the slip of above-mentioned piston, the volume enlargement of above-mentioned bottom side room reduces, the gas discrepancy said vesse of above-mentioned bottom side room
Room.
2. hydraulic cylinder according to claim 1, wherein,
It is combined with the port part of the ring-type guiding the working solution carrying out supply and discharge with respect to above-mentioned bar side room in the periphery of above-mentioned cylinder body
Part,
The end of said vesse pipe is combined with above-mentioned port part.
3. hydraulic cylinder according to claim 2, wherein,
Above-mentioned hydraulic cylinder also includes blocking the base of the open end of above-mentioned cylinder body,
It is formed with the flange part being combined with the end of said vesse pipe in above-mentioned base.
4. hydraulic cylinder according to claim 2, wherein,
Above-mentioned hydraulic cylinder also includes the external component of ring-type being combined with the periphery of above-mentioned cylinder body,
Said vesse pipe support is located at above-mentioned port part and said external part.
5. hydraulic cylinder according to any one of claim 1 to 4, wherein,
In the state of setting the posture of above-mentioned hydraulic cylinder by above-mentioned piston rod in the way of extending upward from above-mentioned cylinder body, above-mentioned fill out
Fill port located at the lubricating fluid in set amount be filled in above-mentioned bottom side room or said vesse room in the case of lubricating fluid
The position that liquid level is reached.
6. a kind of hydraulic cylinder, it is the above-mentioned bar side in guiding to the bar side room being separated by piston and bottom side room from hydraulic power source
Carry out in the presence of the pressure of the working solution in room shrinking work single-action type hydraulic cylinder, wherein, this hydraulic cylinder includes：
The cylinder body of tubular, it accommodates piston in the way of sliding freely, and internally has above-mentioned bar side room and above-mentioned bottom
Side room；
Piston seal, it is located in above-mentioned piston, and is slidingly contacted at the internal face of above-mentioned cylinder body；
Piston rod, it is linked to above-mentioned piston, and protruding to the outside from above-mentioned cylinder body；
Vessel, it is communicated in above-mentioned bottom side room；
Fill port, it is used for filling lubricating fluid from outside to above-mentioned bottom side room or said vesse room；And
Closure part, it blocks above-mentioned fill port,
Above-mentioned piston rod is formed as the tubular of hollow,
It is provided with said vesse room in the inner side of above-mentioned piston rod,
Along with the slip of above-mentioned piston, the volume enlargement of above-mentioned bottom side room reduces, the gas discrepancy said vesse of above-mentioned bottom side room
Room.
7. hydraulic cylinder according to claim 6, wherein,
In the state of setting the posture of above-mentioned hydraulic cylinder by above-mentioned piston rod in the way of extending upward from above-mentioned cylinder body, above-mentioned fill out
Fill port located at the lubricating fluid in set amount be filled in above-mentioned bottom side room or said vesse room in the case of lubricating fluid
The position that liquid level is reached.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012222376A JP6166881B2 (en) | 2012-10-04 | 2012-10-04 | Single acting hydraulic cylinder |
| JP2012-222376 | 2012-10-04 | ||
| PCT/JP2013/076142 WO2014054505A1 (en) | 2012-10-04 | 2013-09-26 | Hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104704248A CN104704248A (en) | 2015-06-10 |
| CN104704248B true CN104704248B (en) | 2017-03-01 |
Family
ID=50434833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380052248.6A Active CN104704248B (en) | 2012-10-04 | 2013-09-26 | Hydraulic cylinder |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6166881B2 (en) |
| KR (1) | KR101790852B1 (en) |
| CN (1) | CN104704248B (en) |
| WO (1) | WO2014054505A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058224A (en) * | 2018-07-02 | 2018-12-21 | 河南德佰特机电设备制造有限公司 | A kind of adjustable fluid pressure cylinder |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4738289U (en) * | 1971-05-11 | 1972-12-27 | ||
| JPS5739603Y2 (en) * | 1976-04-19 | 1982-09-01 | ||
| JPS5770505U (en) * | 1980-10-17 | 1982-04-28 | ||
| JPS57177409A (en) * | 1981-04-22 | 1982-11-01 | Hino Motors Ltd | Hydraulic cylinder for cab tilt |
| JPS5820714U (en) * | 1981-08-03 | 1983-02-08 | ティー・シー・エム株式会社 | Single acting hydraulic cylinder |
| JPH0823362B2 (en) * | 1989-02-10 | 1996-03-06 | 住友精密工業株式会社 | Actuating cylinder device for vacuum environment |
| JP2858168B2 (en) * | 1990-11-22 | 1999-02-17 | カヤバ工業株式会社 | Hydraulic equipment for lifting and lowering lift trucks |
| JP2950173B2 (en) * | 1994-11-04 | 1999-09-20 | トヨタ車体株式会社 | Single acting hydraulic cylinder |
| JP4641674B2 (en) * | 2001-07-10 | 2011-03-02 | カヤバ工業株式会社 | Hydraulic cylinder |
| JP3905753B2 (en) * | 2001-12-18 | 2007-04-18 | 新明和工業株式会社 | Manufacturing method of piston type single acting cylinder |
| JP4020745B2 (en) * | 2002-10-10 | 2007-12-12 | カヤバ工業株式会社 | Shock absorber lock mechanism |
| CN2760315Y (en) * | 2004-12-08 | 2006-02-22 | 郑州人造金刚石及制品工程技术研究中心 | A high pressure cylinder |
| CN101655113A (en) * | 2009-09-09 | 2010-02-24 | 吴言武 | Hydraulic driving device with pressure pre-releasing loop |
| CN201574998U (en) * | 2009-12-25 | 2010-09-08 | 三一重工股份有限公司 | Automatic reset grip cylinder and backhole loader |
| CN201588834U (en) * | 2009-12-29 | 2010-09-22 | 中国重型机械研究院有限公司 | Frequently reciprocating hydraulic cylinder |
| CN101776101B (en) * | 2009-12-29 | 2013-03-06 | 中国重型机械研究院有限公司 | Self cooling and lubrication type frequently reciprocating hydraulic cylinder |
| CN102562708A (en) * | 2010-12-14 | 2012-07-11 | 海洋王照明科技股份有限公司 | Telescopic cylinder and lighting device comprising same |
-
2012
- 2012-10-04 JP JP2012222376A patent/JP6166881B2/en active Active
-
2013
- 2013-09-26 CN CN201380052248.6A patent/CN104704248B/en active Active
- 2013-09-26 KR KR1020157008050A patent/KR101790852B1/en active IP Right Grant
- 2013-09-26 WO PCT/JP2013/076142 patent/WO2014054505A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150047610A (en) | 2015-05-04 |
| KR101790852B1 (en) | 2017-10-26 |
| JP6166881B2 (en) | 2017-07-19 |
| JP2014074460A (en) | 2014-04-24 |
| WO2014054505A1 (en) | 2014-04-10 |
| CN104704248A (en) | 2015-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7819195B2 (en) | External high pressure fluid reservoir for riser tensioner cylinder assembly | |
| BRPI0608351B1 (en) | diaphragm position control for hydraulically driven pumps | |
| CN105765262B (en) | Buffer | |
| JP5669942B2 (en) | Restoring pressure device | |
| CN109931430A (en) | A kind of high pressure valve valve rod anti-roll back device | |
| CN104704248B (en) | Hydraulic cylinder | |
| CN100392256C (en) | Hydraulic system oil tank liquid low-pressure supercharging device | |
| EP2891818A1 (en) | Shock absorber | |
| JP2006349138A (en) | Pneumatic shock absorber | |
| US8371424B2 (en) | Yaw damper with pump | |
| JP4815418B2 (en) | Pneumatic shock absorber | |
| CN105358843A (en) | Fluid pressure cylinder | |
| IT201700006900A1 (en) | Hydraulic linear actuator with locking system designed to block the actuator's compression movement. | |
| JP5192438B2 (en) | Double cylinder type hydraulic shock absorber | |
| KR100808420B1 (en) | Self levelizer damper | |
| CN105257968A (en) | Small lubrication pump | |
| CN111059296B (en) | Electronic expansion valve | |
| CN104175830B (en) | There is vibration damping and leveling bifunctional car floor automatic horizontal control system | |
| EP2876338B1 (en) | Check valve with back pressure relief | |
| JP4898622B2 (en) | Pneumatic shock absorber | |
| KR101254234B1 (en) | Vehicle-height adjusting type shock absorber | |
| JP2009103197A (en) | Pneumatic shock absorber | |
| JP5044314B2 (en) | Rush adjuster oil supply structure | |
| JP2011236936A (en) | Pneumatic shock absorber | |
| JP6082546B2 (en) | Hydraulic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |