CN105422543B - A kind of built-in guiding oil cylinder - Google Patents

A kind of built-in guiding oil cylinder Download PDF

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Publication number
CN105422543B
CN105422543B CN201510991635.7A CN201510991635A CN105422543B CN 105422543 B CN105422543 B CN 105422543B CN 201510991635 A CN201510991635 A CN 201510991635A CN 105422543 B CN105422543 B CN 105422543B
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CN
China
Prior art keywords
end cover
plunger
bottom end
oil cylinder
cylinder
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CN201510991635.7A
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Chinese (zh)
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CN105422543A (en
Inventor
钱雪松
张美�
金京
杨宇
是明哲
杨博
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Wuxi Dahong Hydraulic And Pneumatic Complete Set Co ltd
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Changzhou Campus of Hohai University
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Priority to CN201510991635.7A priority Critical patent/CN105422543B/en
Publication of CN105422543A publication Critical patent/CN105422543A/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
    • 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
    • F15B15/08Characterised 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
    • F15B15/1466Hollow piston sliding over a stationary rod inside the cylinder

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)

Abstract

The invention discloses a kind of built-in guiding oil cylinder, including bottom end cover, cylinder barrel, upper end cover, plunger, screwing, lower screw, guide post, guide pad, key, the present invention is installed on guider inside oil cylinder, in the motion process of oil cylinder, on the one hand, the radially-directed effect of oil cylinder is strengthened, on the other hand, the rotation of oil cylinder is limited, the circumferential guiding of oil cylinder is reliably realized.Simple in construction, reliable operation of the invention, solves the installing space and the restricted problem of condition of oil cylinder external accessory guider, can apply to limit the occasion circumferentially rotated during cylinder movement, has broad application prospects.

Description

A kind of built-in guiding oil cylinder
Technical field
The present invention relates to a kind of guiding oil cylinder, and in particular to the one kind being installed on to a kind of guider inside oil cylinder is built-in Guiding oil cylinder, belongs to electric and field of electromechanical technology.
Background technology
At present, hydraulic jack is had been widely used in all kinds of mechanized equipments, under common applied environment, utilizes hydraulic pressure Oil cylinder, by larger operational forces, realizes linear motion.Guiding problem of the oil cylinder in linear motion, is largely logical Cross in cylinder cover and set guide ring or guidance tape on piston to realize, in cylinder cover and guide ring is set on piston Or guidance tape, it is impossible to cylinder piston rod is solved or the problem of plunger rotates in a circumferential direction, for needing to limit what oil cylinder rotated in a circumferential direction Occasion, often sets additional guider in the outside of oil cylinder.And in some special occasions, it is impossible to meet and set outside The space of additional guide and condition, therefore it is necessary to consider to set guider inside oil cylinder, it is ensured that the guiding work(of oil cylinder Can, prevent rotating in a circumferential direction for oil cylinder.In the application, a kind of built-in guiding oil cylinder solves oil cylinder external accessory guider Installing space and the restricted problem of condition, guider are installed on inside oil cylinder, strengthen the radially-directed effect of oil cylinder, It is simultaneously reliable to realize the circumferential guiding of oil cylinder, prevent circumferentially rotating for oil cylinder.
The content of the invention
It is an object of the invention to provide a kind of built-in guiding oil cylinder.
The technical solution adopted by the present invention is:A kind of built-in guiding oil cylinder, including bottom end cover, cylinder barrel, upper end cover, plunger, Screwing, lower screw, guide pad, guide post and key.The middle and upper part of the bottom end cover offers guide post mounting hole, guide post peace The right side opening for filling hole is provided with bottom end cover keyway, and the upper left quarter of bottom end cover offers the oil through of bottom end cover first, the left side of bottom end cover Bottom end cover oil inlet and the oil through of bottom end cover second are offered, bottom end cover oil inlet passes through the oil through of bottom end cover second, bottom end cover First oil through is connected with cylinder cavity, and bottom end cover sealing ring is provided with the outer circle wall of bottom end cover top;The upper end cover Centre offer upper end cover plunger hole, upper end cover plunger hole is axially through upper end cover, on the inner peripheral wall of upper end cover plunger hole, It is provided with upper end cover dust ring, upper end cover inner seal ring, upper end cover guide ring, upper end cover lower outer circumferential wall and pacifies from top to bottom Equipped with upper end cover exterior seal ring;The bottom of the plunger carries stopper head, and the inside of plunger and stopper head offers plunger endoporus, The right side opening of plunger endoporus is provided with the left of the right gathering sill of plunger endoporus, plunger endoporus and offers the left gathering sill of plunger endoporus;Institute The top for stating guide post offers the guide pad installation through-hole of radial direction insertion, and the bottom right side of guide post offers keyway;It is described Guide pad is in close-fitting insertion guide pad installation through-hole, the outer surface of left and right ends respectively radially beyond guide post;The key In keyway;The guide post is securely mounted in guide post mounting hole together with the key in keyway, and key is closely inserted Enter in bottom end cover keyway, place restrictions on guide post and rotate in a circumferential direction;The bottom end cover inserts the bottom cylinder barrel Inner of cylinder barrel together with guide post, and It is connected by lower screw with the bottom of cylinder barrel, is realized and sealed by bottom end cover sealing ring;The upper end cover inserts the upper of cylinder barrel Portion cylinder barrel Inner, and be connected by screwing with the top of cylinder barrel, realized and sealed by upper end cover exterior seal ring;The plunger peace In cylinder barrel, circular passage is formed between the inner peripheral wall of cylindrical hole in the middle part of the outer circle wall and cylinder barrel of stopper head, is provided with In the guide post insertion plunger endoporus of guide pad, meanwhile, in the right-hand member insertion right gathering sill of plunger endoporus of guide pad, guide pad Three directions of right-hand member outer wall and the inner wall surface formation of the right gathering sill of plunger endoporus are slidably matched, the left end insertion plunger of guide pad In the left gathering sill of endoporus, three directions of left end outer wall of guide pad are matched somebody with somebody with the inner wall surface formation slip of the left gathering sill of plunger endoporus Close, upper end cover plunger hole is run through on the top of plunger, is stretched out out of upper end cover plunger hole, and it is anti-by the realization of upper end cover dust ring Dirt, is realized by upper end cover inner seal ring and sealed, and is realized and is oriented to by upper end cover guide ring.
When high-voltage oil liquid by bottom end cover oil inlet, the oil through of bottom end cover second, the oil through of bottom end cover first enters oil cylinder Inside, acts on the bottom of plunger, overcomes the effect of outer load, promotes plunger outward to stretch out, moves from bottom to top, due to being oriented to The left and right two ends of block respectively with the left gathering sill of plunger endoporus, the radial direction restrictive function of the right gathering sill of plunger endoporus each other, enter The radial direction that one step reduces plunger is rocked, and strengthens the radially-directed effect of plunger, on the other hand, left and right due to guide pad Two ends respectively with the left gathering sill of plunger endoporus, the circumferential restrictive function of the right gathering sill of plunger endoporus each other, limit plunger Rotation, reliably realize the circumferential guiding of plunger;When outer load effect is on plunger, promotes plunger retraction, inside oil cylinder Fluid flowed out by the oil through of bottom end cover first, the oil through of bottom end cover second, bottom end cover oil inlet, stopper head is retracted, from upper Move downward, similarly, since the left and right two ends of guide pad respectively with the left gathering sill of plunger endoporus, the right gathering sill phase of plunger endoporus Radial direction restrictive function between mutually, the radial direction for further reducing plunger is rocked, and strengthens the radially-directed effect of plunger, another Aspect, due to guide pad left and right two ends respectively with the left gathering sill of plunger endoporus, the week of the right gathering sill of plunger endoporus each other To restrictive function, the rotation of plunger is limited, the circumferential guiding of plunger is reliably realized, so, oil cylinder of the invention is in motion During can realize reliable guiding.
The bottom end cover be connected by lower screw with the bottom of cylinder barrel or, bottom end cover passes through screw thread and cylinder barrel Bottom be connected.
The upper end cover be connected by screwing with the top of cylinder barrel or, upper end cover passes through screw thread and cylinder barrel Top be connected.
The guide pad is shaped as cuboid.
The beneficial effects of the invention are as follows:
A kind of built-in guiding oil cylinder, thoroughly solving the installing space and condition of oil cylinder external accessory guider is restricted The problem of, guider is installed on inside oil cylinder, the radially-directed effect during cylinder movement is strengthened, while reliable real Show the circumferential guiding of oil cylinder, prevent circumferentially rotating for oil cylinder.
Brief description of the drawings
The embodiment provided below in conjunction with the accompanying drawings is described in more detail to the present invention.
Fig. 1 is the structural representation of the present invention;
Fig. 2 is Fig. 1 top view.
Embodiment
As shown in Figure 1 and Figure 2, a kind of built-in guiding oil cylinder, including bottom end cover 1, cylinder barrel 2, upper end cover 3, plunger 4, screwing 5th, lower screw 6, guide pad 8, guide post 9 and key 10.The middle and upper part of bottom end cover 1 offers guide post mounting hole 1-2, guide post peace The right side opening for filling hole 1-2 is provided with bottom end cover keyway 1-1, and the upper left quarter of bottom end cover 1 offers bottom end cover the first oil through 1-3, under The left side of end cap 1 offers bottom end cover oil inlet 1-5 and bottom end cover the second oil through 1-4, bottom end cover oil inlet 1-5 pass through lower end The second oil through of lid 1-4, the first oil through of bottom end cover 1-3 are connected with cylinder cavity, are installed on the top outer circle wall of bottom end cover 1 There is bottom end cover sealing ring 1-6;The centre of upper end cover 3 offer upper end cover plunger hole 3-5, upper end cover plunger hole 3-5 axially through On upper end cover 3, upper end cover plunger hole 3-5 inner peripheral wall, upper end cover dust ring 3-2 is installed from top to bottom, it is close in upper end cover Upper end cover exterior seal ring 3-1 is installed on seal 3-3, upper end cover guide ring 3-4, the lower outer circumferential wall of upper end cover 3;Plunger 4 Bottom carries stopper head 4-1, and plunger 4 and stopper head 4-1 inside offer plunger endoporus 4-2, plunger endoporus 4-2 right side opening Provided with the right gathering sill 4-3 of plunger endoporus, the left gathering sill 4-4 of plunger endoporus is offered on the left of plunger endoporus 4-2;Guide post 9 Top to offer and offer keyway 9-2 on the right side of the guide pad installation through-hole 9-1 of radial direction insertion, the bottom of guide post 9;Guide pad 8 In close-fitting insertion guide pad installation through-hole 9-1, the outer surface of left and right ends respectively radially beyond guide post 9;Key 10 is installed In keyway 9-2;Guide post 9 is securely mounted in guide post mounting hole 1-2 together with the key 10 in keyway 9-2, key 10 It is tightly inserted into bottom end cover keyway 1-1, places restrictions on guide post 9 and rotate in a circumferential direction;Bottom end cover 1 inserts the bottom of cylinder barrel 2 together with guide post 9 Cylinder barrel Inner, and be connected by lower screw 6 with the bottom of cylinder barrel 2, realized and sealed by bottom end cover sealing ring 1-4;Upper end cover 3 is inserted Enter the top cylinder barrel Inner of cylinder barrel 2, and be connected by the top of screwing 5 with cylinder barrel 2, it is real by upper end cover exterior seal ring 3-1 Now seal;Plunger 4 is arranged in cylinder barrel 2, in the middle part of stopper head 4-1 outer circle wall and cylinder barrel cylindrical hole 2-2 inner peripheral wall it Between form circular passage 7, be provided with the guide post 9 of guide pad 8 insertion plunger endoporus 4-2, meanwhile, the right-hand member of guide pad 8 is inserted Enter in the right gathering sill 4-3 of plunger endoporus, three directions of right-hand member outer wall of guide pad 8 and the right gathering sill 4-3 of plunger endoporus inwall Surface forms and is slidably matched, in the left gathering sill 4-4 of left end insertion plunger endoporus of guide pad 8, the left end outer wall of guide pad 8 three Direction and the left gathering sill 4-4 of plunger endoporus inner wall surface formation are slidably matched, and upper end cover plunger hole 3- is run through on the top of plunger 4 5, stretched out out of upper end cover plunger hole 3-5, and realized by upper end cover dust ring 3-2 dust-proof, pass through upper end cover inner seal ring 3-3 Sealing is realized, is realized and is oriented to by upper end cover guide ring 3-4.
When high-voltage oil liquid passes through bottom end cover oil inlet 1-5, the second oil through of bottom end cover 1-4, the first oil through of bottom end cover 1-3 Into inside oil cylinder, the bottom of plunger 4 is acted on, the effect of outer load is overcome, promotes plunger 4 protruding, transports from bottom to top It is dynamic, due to guide pad 8 left and right two ends respectively with the left gathering sill 4-4 of plunger endoporus, the right gathering sill 4-3 of plunger endoporus mutually it Between radial direction restrictive function, the radial direction for further reducing plunger 4 rocks, and strengthens the radially-directed effect of plunger 4, the opposing party Face, due to guide pad 8 left and right two ends respectively with the left gathering sill 4-4 of plunger endoporus, the right gathering sill 4-3 of plunger endoporus mutually it Between circumferential restrictive function, limit the rotation of plunger 4, reliably realize the circumferential guiding of plunger 4;When outer load effect is in post On plug 4, when promoting the retraction of plunger 4, the fluid inside oil cylinder passes through the first oil through of bottom end cover 1-3, the oil through of bottom end cover second 1-4, bottom end cover oil inlet 1-5 flow out, and stopper head 4-1 retracts, and moves from the top down, similarly, since left and right the two of guide pad 8 End respectively with the left gathering sill 4-4 of plunger endoporus, the radial direction restrictive functions of the right gathering sill 4-3 of plunger endoporus each other, further The radial direction for reducing plunger 4 is rocked, and the radially-directed effect of plunger 4 is strengthened, on the other hand, due to left and right the two of guide pad 8 End respectively with the left gathering sill 4-4 of plunger endoporus, the circumferential restrictive functions of the right gathering sill 4-3 of plunger endoporus each other, limit The rotation of plunger 4, reliably realizes the circumferential guiding of plunger 4, so, oil cylinder of the invention can be realized in motion process can The guiding leaned on.
Preferably, above-mentioned bottom end cover 1 is connected by the bottom of screw thread with cylinder barrel 2.
Preferably, above-mentioned upper end cover 3 is connected by the top of screw thread with cylinder barrel 2.
Preferably, above-mentioned guide pad 8 is shaped as cuboid.
A kind of built-in guiding oil cylinder of the present invention, simple in construction, reliable operation thoroughly solves oil cylinder external accessory and is oriented to dress The restricted problem of installing space and condition put, guider is installed on inside oil cylinder, during strengthening cylinder movement Radially-directed effect, while reliable realize the circumferential guiding of oil cylinder, prevent circumferentially rotating for oil cylinder.
The above is only the preferred embodiment of the present invention, it should be pointed out that:For the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (4)

1. a kind of built-in guiding oil cylinder, it is characterised in that:Including bottom end cover(1), cylinder barrel(2), upper end cover(3), plunger(4), on Screw(5), lower screw(6), guide pad(8), guide post(9)And key(10);The bottom end cover(1)Middle and upper part offer guiding Bar mounting hole(1-2), guide post mounting hole(1-2)Right side opening be provided with bottom end cover keyway(1-1), bottom end cover(1)Upper left quarter Offer the oil through of bottom end cover first(1-3), bottom end cover(1)Left side offer bottom end cover oil inlet(1-5)With bottom end cover Two oil throughs(1-4), bottom end cover oil inlet(1-5)Pass through the oil through of bottom end cover second(1-4), the oil through of bottom end cover first(1- 3)It is connected with cylinder cavity, bottom end cover(1)Bottom end cover sealing ring is installed on the outer circle wall of top(1-6);The upper end cover (3)Centre offer upper end cover plunger hole(3-5), upper end cover plunger hole(3-5)Axially through upper end cover(3), upper end cover post Consent(3-5)Inner peripheral wall on, upper end cover dust ring is installed from top to bottom(3-2), upper end cover inner seal ring(3-3), on End cap guide ring(3-4), upper end cover(3)Upper end cover exterior seal ring is installed on lower outer circumferential wall(3-1);The plunger(4) Bottom carry stopper head(4-1), plunger(4)And stopper head(4-1)Inside offer plunger endoporus(4-2), plunger endoporus (4-2)Right side opening be provided with the right gathering sill of plunger endoporus(4-3), plunger endoporus(4-2)Left side offer a plunger endoporus left side and lead To groove(4-4);The guide post(9)Top offer the guide pad installation through-hole of radial direction insertion(9-1), guide post(9)'s Keyway is offered on the right side of bottom(9-2);The guide pad(8)Guide pad installation through-hole is inserted through close-fitting(9-1)It is interior, left and right two End is respectively radially beyond guide post(9)Outer surface;The key(10)Installed in keyway(9-2)It is interior;The guide post(9)Together with Installed in keyway(9-2)Interior key(10)It is securely mounted to guide post mounting hole(1-2)It is interior, key(10)It is tightly inserted into bottom end cover key Groove(1-1)It is interior, place restrictions on guide post(9)Rotate in a circumferential direction;The bottom end cover(1)Together with guide post(9)Insert cylinder barrel(2)Bottom cylinder Cylinder Inner, and pass through lower screw(6)And cylinder barrel(2)Bottom be connected, pass through bottom end cover sealing ring(1-4)Realize sealing;It is described Upper end cover(3)Insert cylinder barrel(2)Top cylinder barrel Inner, and pass through screwing(5)And cylinder barrel(2)Top be connected, by upper End cap exterior seal ring(3-1)Realize sealing;The plunger(4)Installed in cylinder barrel(2)It is interior, stopper head(4-1)Outer circle wall and Cylindrical hole in the middle part of cylinder barrel(2-2)Inner peripheral wall between form circular passage(7), guide pad is installed(8)Guide post(9)Insert Enter plunger endoporus(4-2)It is interior, meanwhile, guide pad(8)Right-hand member insertion the right gathering sill of plunger endoporus(4-3)It is interior, guide pad(8)'s Three directions of right-hand member outer wall and the right gathering sill of plunger endoporus(4-3)Inner wall surface formation be slidably matched, guide pad(8)Left end Insert the left gathering sill of plunger endoporus(4-4)It is interior, guide pad(8)Three directions of left end outer wall and the left gathering sill of plunger endoporus(4- 4)Inner wall surface formation be slidably matched, plunger(4)Top run through upper end cover plunger hole(3-5), from upper end cover plunger hole(3- 5)It is interior to stretch out, and pass through upper end cover dust ring(3-2)Realize dust-proof, pass through upper end cover inner seal ring(3-3)Sealing is realized, is passed through Upper end cover guide ring(3-4)Realize and be oriented to.
2. a kind of built-in guiding oil cylinder according to claim 1, it is characterised in that:The bottom end cover(1)By screw thread and Cylinder barrel(2)Bottom be connected.
3. a kind of built-in guiding oil cylinder according to claim 1, it is characterised in that:The upper end cover(3)By screw thread and Cylinder barrel(2)Top be connected.
4. a kind of built-in guiding oil cylinder according to claim 1, it is characterised in that:The guide pad(8)It is shaped as rectangular Body.
CN201510991635.7A 2015-12-25 2015-12-25 A kind of built-in guiding oil cylinder Active CN105422543B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510991635.7A CN105422543B (en) 2015-12-25 2015-12-25 A kind of built-in guiding oil cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510991635.7A CN105422543B (en) 2015-12-25 2015-12-25 A kind of built-in guiding oil cylinder

Publications (2)

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CN105422543A CN105422543A (en) 2016-03-23
CN105422543B true CN105422543B (en) 2017-07-18

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3796639B2 (en) * 1997-09-19 2006-07-12 Smc株式会社 Fluid pressure cylinder
GB9810113D0 (en) * 1998-05-12 1998-07-08 Smiths Industries Plc Hydraulic lift cylinder assemblies
CN201092987Y (en) * 2007-08-22 2008-07-30 中国舰船研究设计中心 Inner guiding torsion-proof telescopic piston jar
CN201836144U (en) * 2010-11-09 2011-05-18 济南铸造锻压机械研究所有限公司 Hydraulic cylinder with guiding and detecting functions
CN202718962U (en) * 2012-06-17 2013-02-06 福建省龙岩盛通液压有限公司 Guiding structure of hydraulic oil cylinder
CN202971404U (en) * 2012-12-19 2013-06-05 山东富力世液压油缸有限公司 Quick stamping cylinder with embedded guide rotation-proof device
CN103557200B (en) * 2013-11-22 2016-01-06 徐州徐工液压件有限公司 A kind of oil hydraulic cylinder with anti-rotation mechanism
CN103939417A (en) * 2014-04-25 2014-07-23 徐州徐工液压件有限公司 Anti-rotation structure of hydraulic cylinder
CN104088848B (en) * 2014-07-03 2017-02-22 福建海源自动化机械股份有限公司 Anti-rotation servo oil cylinder of external displacement sensor

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