CN105673611B - A kind of two-action multi-stage anti-rotation hydraulic cylinder - Google Patents
A kind of two-action multi-stage anti-rotation hydraulic cylinder Download PDFInfo
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- CN105673611B CN105673611B CN201610245072.1A CN201610245072A CN105673611B CN 105673611 B CN105673611 B CN 105673611B CN 201610245072 A CN201610245072 A CN 201610245072A CN 105673611 B CN105673611 B CN 105673611B
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Classifications
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- 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
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
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- 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
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- 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
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
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- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
Abstract
A kind of two-action multi-stage anti-rotation hydraulic cylinder disclosed by the invention, including shell, rear end cap and piston rod, the periphery of piston rod is arranged with cylinder barrel, piston rod and cylinder barrel are coaxially installed in the inner chamber of shell, rear end cap is fixedly installed in the rear end of shell, rear end cap is provided with positive chamber hydraulic fluid port and connects positive chamber hydraulic fluid port and the positive chamber grease chamber of piston rod and cylinder barrel, shell is provided with anti-chamber hydraulic fluid port and connects anti-chamber hydraulic fluid port and the anti-chamber grease chamber of piston rod and cylinder barrel, also include the preventing piston rod from rotating component of Telescopic rod structure, the front end of preventing piston rod from rotating component is placed in the guiding groove that piston rod is opened up along the longitudinal direction in the middle part of rear end face, the rear end of preventing piston rod from rotating component is fixedly connected with rear end cap.The present invention has the advantages that simple in construction, handling ease, with low cost, compact, and hydraulic cylinder of the invention can realize the Multiple techniques purpose of double acting, big stroke and anti-rotation.
Description
Technical field
The present invention relates to a kind of hydraulic test, possess double acting more particularly, to a kind of and the hydraulic cylinder that rotates can be prevented.
Background technology
Hydraulic cylinder is the important executive component in hydraulic system, is widely used in every field.In many occasions, due to by
To the limitation of installing space and stroke, it is often necessary to will with meet narrow installation space and big stroke using multistage hydraulic cylinder
Ask；And for other some application scenarios, require that hydraulic cylinder can not rotate in telescopic process repeatedly again, so that it drives
Dynamic device keeps direction constant.At present, the field solve hydraulic cylinder anti-rotation method mainly using not rounded abnormity cylinder barrel and
Piston rod construction and external orientation rotation-preventing mechanism, but both modes because the fault of construction of its own there are problems that storage it is many,
It is mainly manifested in following aspect：(1) the special-shaped cylinder barrel of not rounded and piston rod because its be non-standard component, have that difficulty of processing is big, production
The problem of cost is high, and its versatility is poor；(2) external orientation rotation-preventing mechanism is existed because needing extra installation anti-rotation device
Space-consuming is larger, it is impossible to which meet small space installs and uses requirement.As can be seen here, a kind of simple in construction, processing is researched and developed to hold
Easily, with low cost, compact multiple-stage rotation-proof hydraulic cylinder, with meet small space, big stroke, anti-rotation use demand, tool
It is significant.
The content of the invention
It is an object of the invention to provide a kind of two-action multi-stage anti-rotation hydraulic cylinder, its have simple in construction, handling ease, into
This cheap, compact advantage, the Multiple techniques of double acting, big stroke and anti-rotation can be realized by the hydraulic cylinder of the present invention
Purpose.
To solve, hydraulic cylinder anti-rotation technology of the prior art its difficulty of processing for existing is big, production cost is high, versatility
Difference, the problem of space-consuming is big, a kind of two-action multi-stage anti-rotation hydraulic cylinder that the present invention is provided, including shell, rear end cap and work
Stopper rod, wherein, the periphery of the piston rod is arranged with cylinder barrel, and piston rod and the cylinder barrel are coaxially installed in the inner chamber of shell,
Rear end cap is fixedly installed in the rear end of shell, and rear end cap is provided with positive chamber hydraulic fluid port, and makes positive chamber hydraulic fluid port and piston rod and cylinder barrel
Positive chamber grease chamber connection, shell is provided with anti-chamber hydraulic fluid port, and connects anti-chamber hydraulic fluid port and the anti-chamber grease chamber of piston rod and cylinder barrel, also wraps
The preventing piston rod from rotating component of Telescopic rod structure is included, the front end of the preventing piston rod from rotating component is placed in piston rod edge in the middle part of rear end face
In the guiding groove that fore-and-aft direction is opened up, the rear end of preventing piston rod from rotating component is fixedly connected with rear end cap.
Further, a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention, wherein, the cylinder barrel is provided with two-stage, is respectively
One-level cylinder barrel and secondary cylinder cylinder, secondary cylinder jacket casing are located at the periphery of one-level cylinder barrel；One-level cylinder barrel and the secondary cylinder cylinder is used
Split-type structural, one-level cylinder barrel includes one-level inner cylinder and one-level outer barrel, and one-level inner cylinder is sheathed in the inner chamber of one-level outer barrel, one-level
Between the periphery wall of inner cylinder and the internal perisporium of one-level outer barrel be provided with the first anti-chamber oil duct, one-level inner cylinder with before the first anti-chamber oil duct
Hold and first through hole is offered on corresponding perisporium, first through hole makes the first anti-chamber oil duct be connected with the anti-chamber grease chamber of piston rod, one
Level outer barrel offers the second through hole on perisporium corresponding with the first anti-chamber oil duct rear end, the second through hole make the first anti-chamber oil duct with
The anti-chamber grease chamber connection of one-level cylinder barrel；Secondary cylinder cylinder includes two grades of inner cylinders and two grades of outer barrels, and two grades of inner cylinders are sheathed on two grades of outer barrels
Inner chamber in, be provided with the second anti-chamber oil duct between the periphery wall of two grades of inner cylinders and the internal perisporium of two grades of outer barrels, two grades of inner cylinders with
Third through-hole is offered on the corresponding perisporium in second anti-chamber oil duct front end, third through-hole makes the second anti-chamber oil duct and one-level cylinder barrel
Anti- chamber grease chamber connection, two grades of outer barrels offer fourth hole, fourth hole on perisporium corresponding with the second anti-chamber oil duct rear end
Connect the second anti-chamber oil duct and the anti-chamber grease chamber of secondary cylinder cylinder, the anti-chamber grease chamber of secondary cylinder cylinder is connected with anti-chamber hydraulic fluid port.
Further, a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention, wherein, on the rear end periphery wall of the piston rod
Circumferentially arranged with first annular projection, it is provided between the first annular raised and internal perisporium of one-level inner cylinder outside sealing structure, one-level
Circumferentially arranged with the second annular protrusion on the front end internal perisporium of cylinder, provided with close between the second annular protrusion and the periphery wall of piston rod
Seal structure, the space of the anti-chamber grease chamber of piston rod between first annular raised and the second annular protrusion is formed；
Circumferentially arranged with the 3rd annular protrusion on the rear end periphery wall of one-level outer barrel, the 3rd annular protrusion and two grades of inner cylinders
It is provided with raised circumferentially arranged with fourth annular on sealing structure, the front end internal perisporium of two grades of outer barrels between internal perisporium, fourth annular
Sealing structure is provided between the raised and periphery wall of one-level outer barrel, the anti-chamber grease chamber of one-level cylinder barrel is by the 3rd annular protrusion and the 4th
Space between annular protrusion is formed；
Circumferentially arranged with the 5th annular protrusion on the rear end periphery wall of two grades of outer barrels, the inner circumferential of the 5th annular protrusion and shell
It is provided between wall on sealing structure, the front end internal perisporium of shell circumferentially arranged with the 6th annular protrusion, the 6th annular protrusion and two
Sealing structure is provided between the preceding periphery wall of level outer barrel, the anti-chamber grease chamber of secondary cylinder cylinder is by the 5th annular protrusion and the 6th convex annular
Space between rising is formed.
Further, a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention, wherein, the preventing piston rod from rotating component is included only
Moving axis, one-level square set, two grades of square sets and scotch；The braking roll includes square axis body and is arranged at the of square axis body front end
One guide head, the rear end of square axis body is fixedly connected by the first attachment structure with rear end cap；The one-level square set includes one-level
Offered and it on square casing and the second guide head for being arranged at one-level square casing front end, the aft bulkhead of one-level square casing
The first square anti-rotating hole that inner chamber is communicated；Two grades of square sets include two grades of square casings and are arranged at two grades of square casing front ends
The 3rd guide head, the aft bulkhead of two grades of square casings offers the square anti-rotating hole of second communicated with its inner chamber；Scotch leads to
Cross the second attachment structure to be fixedly connected with the rear end of piston rod, and offer and communicated with the guiding groove of piston rod on scotch
Third party's shape anti-rotating hole；
First guide head of braking roll is in the one-level square casing of one-level square set and both contact surfaces is mutually pasted
Close, the square axis body of braking roll passes through the first square anti-rotating hole of one-level square set and makes both contact surfaces bonded to each other；
Second guide head of one-level square set is in two grades of square casings of two grades of square sets and makes both contact surfaces mutual
Laminating, the one-level square casing of one-level square set passes through the second square anti-rotating hole of two grades of square sets and both contact surfaces is mutually pasted
Close；
3rd guide head of two grades of square sets is in the guiding groove of piston rod and makes both contact surfaces bonded to each other, and two
Two grades of square casings of level square set pass through third party's shape anti-rotating hole of scotch and make both contact surfaces bonded to each other.
Further, a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention, wherein, first attachment structure is, stop
The rear end of axle is sequentially provided with and square axis body is coaxial and the short cylindrical and short square column that are connected as a single entity, the connection of short cylindrical and short square column
Place is provided with spacing ring, and the forward position of spacing ring is offered offers manhole on annular keyway, rear end cap, is additionally provided with fixation
Disk and two semi-circular card keys, and the radius for making card key is more than the radius of manhole, and square is offered on fixed disk and is prevented
Turn hole, the front end face of fixed disk offers the limited impression for engaging spacing ring and card key；The short cylindrical of braking roll is allowed to be placed in
In manhole on rear end cap and short square column and spacing ring is passed from rear end cap, allow two semi-circular card keys to be stuck in annular key
In groove, allow fixed disk to be set in by square anti-rotating hole on short square column and push down spacing ring and two semi-circular card keys, lead to
Cross screw and fixed disk is fixedly connected with both with the screw that correspondence is opened up on rear end cap.
Further, a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention, wherein, the circle of the short cylindrical and rear end cap
It is provided between the perisporium of through hole bonded to each other between sealing structure, four side walls of short square column and square anti-rotating hole.
Further, a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention, wherein, the first square anti-rotating hole, second
The semi-circular recesses of insertion wall thickness are offered on the side wall of square anti-rotating hole and third party's shape anti-rotating hole along the longitudinal direction.
Further, a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention, wherein, second attachment structure is, piston
The rear end of bar offers the concave station for buckle scotch on the perisporium of guiding groove, and offers spiral shell on the table top of concave station
Pit；The rear end face of scotch offers multiple square grooves being uniformly distributed circumferentially on the outside of third party's shape anti-rotating hole,
The bottom land of square groove offers tapped through hole, allows scotch to be buckled on the concave station of piston rod rear end and make both by screw
It is fixedly connected.
Further, a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention, wherein, opened on the rear end periphery wall of the shell
Provided with external screw thread, internal thread is offered on the inner chamber perisporium of rear end cap, rear end cap coordinates spinning in the rear end of shell by screw thread
Portion.
Further, a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention, wherein, on the rear end periphery wall of the shell and
Forward position in rear end cap is also installed with locking nut.
A kind of two-action multi-stage anti-rotation hydraulic cylinder of the present invention compared with prior art, with advantages below：(1) present invention is logical
Setting shell, rear end cap and piston rod are crossed, and cylinder barrel is arranged in the periphery for stating piston rod, allows piston rod and cylinder barrel to be coaxially installed on
In the inner chamber of shell, rear end cap is set to be fixed on the rear end of shell.Positive chamber hydraulic fluid port is set on rear end cap and makes positive chamber hydraulic fluid port and work
Stopper rod is connected all the time with the positive chamber grease chamber of cylinder barrel, and anti-chamber hydraulic fluid port is set on shell and makes anti-chamber hydraulic fluid port and piston rod and cylinder barrel
Anti- chamber grease chamber is connected all the time.And the preventing piston rod from rotating component of Telescopic rod structure is provided with, allow the front end of preventing piston rod from rotating component to put
In the guiding groove of piston rod, while allowing the rear end of preventing piston rod from rotating component to be fixedly connected with rear end cap.Thus just constitute
A kind of simple in construction, handling ease, two-action multi-stage anti-rotation hydraulic cylinder with low cost.In a particular application, the present invention passes through
Cylinder barrel is arranged in the periphery of piston rod, allows piston rod and cylinder barrel to be coaxially installed in the inner chamber of shell, many of hydraulic cylinder are realized
Level stretches receipts function, can meet the use demand of big stroke；Meanwhile, the present invention makes the positive chamber oil of positive chamber hydraulic fluid port and piston rod and cylinder barrel
Room is connected all the time, and anti-chamber hydraulic fluid port and the anti-chamber grease chamber of piston rod and cylinder barrel is connected all the time, realizes the double acting of hydraulic cylinder
Function, can meet double-acting use demand；Particularly, the preventing piston rod from rotating component of the invention by setting Telescopic rod structure,
And the front end of preventing piston rod from rotating component is placed in the guiding groove of piston rod, make rear end and the rear end cap of preventing piston rod from rotating component
It is fixedly connected, can prevents piston rod from being rotated during receipts are stretched, so as to ensure that device of its driving keeps direction constant.This hair
It is bright to use this built-in preventing piston rod from rotating mechanism, it hydraulic cylinder is kept less volume, small space can be met
Demand is installed and used, and the difficulty of processing that the anti-rotation structure of the special-shaped cylinder barrel of not rounded and piston rod can be avoided to exist is big, be produced into
The problem of this height, poor versatility.By more than analyze, the present invention can meet simultaneously big stroke, double acting, anti-rotation,
Multiple use in small space needs, with stronger practicality.
Illustrated embodiment is made further specifically to a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention below in conjunction with the accompanying drawings
It is bright：
Brief description of the drawings
Fig. 1 is a kind of stereogram of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Fig. 2 is a kind of front view of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Fig. 3 is the A-A direction views in Fig. 2；
Fig. 4 is the stereogram of shell in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Fig. 5 is the front view of shell in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Fig. 6 is the B-B direction view in Fig. 5；
Fig. 7 is the stereogram of rear end cap in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Fig. 8 is the front view of rear end cap in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Fig. 9 is the left view of rear end cap in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 10 is the C-C direction views in Fig. 9；
Figure 11 is the stereogram of locking nut in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 12 is the left view of locking nut in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 13 is the stereogram of two grades of outer barrels in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 14 is the front view of two grades of outer barrels in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 15 is the D-D direction views in Figure 14；
Figure 16 is the stereogram of two grades of inner cylinders in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 17 is the front view of two grades of inner cylinders in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 18 is the E-E direction views in Figure 17；
Figure 19 is the stereogram of one-level outer barrel in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 20 is the front view of one-level outer barrel in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 21 is the F-F direction views in Figure 19；
Figure 22 is the stereogram of one-level inner cylinder in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 23 is the front view of one-level inner cylinder in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 24 is the G-G direction views in Figure 23；
Figure 25 is the stereogram of piston rod in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 26 is the front view of piston rod in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 27 is the H-H direction views in Figure 26；
Figure 28 is the stereogram of scotch in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 29 is the left view of scotch in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 30 is the right view of scotch in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 31 is the stereogram of two grades of square sets in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 32 is the front view of two grades of square sets in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 33 is the I-I direction views in Figure 32；
Figure 34 is the stereogram of one-level square set in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 35 is the front view of one-level square set in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 36 is the J-J direction views in Figure 32；
Figure 37 is the stereogram of braking roll in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 38 is the front view of braking roll in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 39 is the K-K direction views in Figure 32；
Figure 40 is the stereogram of fixed disk in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 41 is the left view of fixed disk in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 42 is the right view of fixed disk in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 43 is the stereogram of semi-circular card key in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention；
Figure 44 is piston rod, scotch, two grades of square sets, one-level sides in a kind of two-action multi-stage anti-rotation hydraulic cylinder of the invention
The connection assembled state schematic diagram of set, braking roll and fixed disk.
Embodiment
A kind of embodiment of two-action multi-stage anti-rotation hydraulic cylinder of the invention shown in 4, is generally wrapped as shown in Figure 1 to Figure 4
Include shell 1, rear end cap 2 and piston rod 3.Cylinder barrel is arranged in the periphery of piston rod 3, and piston rod 3 and cylinder barrel are coaxially installed on
In the inner chamber of shell 1, rear end cap 2 is fixedly installed in the rear end of shell 1.Positive chamber hydraulic fluid port 21 is set on rear end cap 2, and made just
Chamber hydraulic fluid port 21 is connected all the time with the positive chamber grease chamber of piston rod 3 and cylinder barrel, anti-chamber hydraulic fluid port 11 is set on shell 1, and make anti-chamber oil
Mouth 11 is connected all the time with the anti-chamber grease chamber of piston rod 3 and cylinder barrel.The preventing piston rod from rotating component 4 of Telescopic rod structure is set simultaneously, allowed
The front end of preventing piston rod from rotating component 4 is placed in the guiding groove 31 that piston rod 3 is opened up along the longitudinal direction in the middle part of rear end face, allows work
The rear end of stopper rod anti-rotation component 4 is fixedly connected with rear end cap 2.By above structure setting just constitute it is a kind of simple in construction plus
Easy, the with low cost two-action multi-stage anti-rotation hydraulic cylinder of work.In a particular application, the present invention is by the periphery of piston rod 3
Cylinder barrel is arranged, the multistage for realizing hydraulic cylinder stretches receipts function, can meet the use demand of big stroke；Meanwhile, the present invention makes positive chamber
Hydraulic fluid port 21 is connected all the time with the positive chamber grease chamber of piston rod 3 and cylinder barrel, and makes the anti-chamber oil of anti-chamber hydraulic fluid port 11 and piston rod 3 and cylinder barrel
Room is connected all the time, is realized the double acting function of hydraulic cylinder, can be met double-acting use demand.Particularly, the present invention passes through
Set Telescopic rod structure preventing piston rod from rotating component 4, and make preventing piston rod from rotating component 4 front end be placed in piston rod 3 guiding it is recessed
31 in groove, the rear end of preventing piston rod from rotating component 4 is fixedly connected with rear end cap 2, can prevent piston rod 3 from stretching receipts process transfer
It is dynamic, so as to ensure that the device of its driving keeps direction constant.The present invention is by setting this built-in preventing piston rod from rotating machine
Structure, can not only make hydraulic cylinder keep less volume, to meet the demand of installing and using in small space, and can avoid not rounded abnormity
The problem of difficulty of processing that the anti-rotation structure of cylinder barrel and piston rod is present is big, production cost is high, versatility is poor.Divide more than
Analysis understands that the present invention can meet big stroke, double acting, anti-rotation, the multiple use needs in small space simultaneously, with stronger reality
The property used.
As embodiment, cylinder barrel of the invention is provided with two-stage, respectively one-level cylinder barrel 5 and secondary cylinder cylinder 6, its
In, secondary cylinder cylinder 6 is set in the periphery of one-level cylinder barrel 5, and one-level cylinder barrel 5 and secondary cylinder cylinder 6 is used split-type structural.One
Level cylinder barrel 5 includes one-level inner cylinder 51 and one-level outer barrel 52, allows one-level inner cylinder 51 to be sheathed in the inner chamber of one-level outer barrel 52, and one
First anti-chamber oil duct 53 is set between the level periphery wall of inner cylinder 51 and the internal perisporium of one-level outer barrel 52, makes one-level inner cylinder 51 with the
Open up first through hole 54 on the corresponding perisporium in the one anti-front end of chamber oil duct 53, by first through hole 54 make the first anti-chamber oil duct 53 with it is living
The anti-chamber grease chamber connection of stopper rod 3；Make one-level outer barrel 52 open up second on perisporium corresponding with the first anti-rear end of chamber oil duct 53 to lead to
Hole 55, makes the first anti-chamber oil duct 53 be connected with the anti-chamber grease chamber of one-level cylinder barrel 5 by the second through hole 55.Likewise, making secondary cylinder
Cylinder 6 includes two grades of inner cylinders 61 and two grades of outer barrels 62, allows two grades of inner cylinders 61 to be sheathed in the inner chamber of two grades of outer barrels 62, and in two grades
Second anti-chamber oil duct 63 is set between 61 periphery wall of cylinder and the internal perisporium of two grades of outer barrels 62, make two grades of inner cylinders 61 with it is second anti-
Third through-hole 64 is opened up on the corresponding perisporium in the front end of chamber oil duct 63, the second anti-chamber oil duct 63 and first-stage cylinder are made by third through-hole 64
The anti-chamber grease chamber connection of cylinder 5；Two grades of outer barrels 62 are made to open up fourth hole on perisporium corresponding with the second anti-rear end of chamber oil duct 63
65, connect the second anti-chamber oil duct 63 and the anti-chamber grease chamber of secondary cylinder cylinder 6 by fourth hole 65；And make the anti-of secondary cylinder cylinder 6
Chamber grease chamber is connected with anti-chamber hydraulic fluid port 11.This split-type structural one-level cylinder barrel 5 and secondary cylinder cylinder 6 not only have it is simple in construction,
The advantage of handling ease, and stretch receive during can make anti-chamber hydraulic fluid port 11 and piston rod 3, one-level cylinder barrel 5 and secondary cylinder cylinder 6
Anti- chamber grease chamber remains connection, so as to ensure that double-acting function is realized.It should be noted that in actual applications, one
The intracavity posterior end of level outer barrel 52 and two grades of outer barrels 62 is equipped with snap ring, to prevent one-level inner cylinder 51 and two grades of positionings of inner cylinder 61, meanwhile,
Between the rear end lateral wall of one-level inner cylinder 51 and the madial wall of one-level outer barrel 52, and two grades of inner cylinders 61 rear end lateral wall and
Between the madial wall of two grades of outer barrels 62, sealing structure is provided with, to strengthen sealing property, it is ensured that the performance of hydraulic cylinder is stable
Property.In particular, cylinder barrel of the invention is not limited to set two-stage, and one-level or two can be set according to actual needs
It is more than level.
As embodiment, the present invention makes the circumferentially arranged first annular projection on the periphery wall of rear end of piston rod 3,
And sealing structure is set between the first annular raised and internal perisporium of one-level inner cylinder 51.Make one-level outer barrel 52 in front end internal perisporium
Upper circumferentially arranged second annular protrusion, and sealing structure is set between the periphery wall of the second annular protrusion and piston rod 3.It is logical
The space crossed between above structure setting, first annular raised and the second annular protrusion is formed the anti-chamber grease chamber of piston rod 3.
Same reason, makes circumferentially arranged 3rd annular protrusion on the periphery wall of rear end of one-level outer barrel 52, and in the 3rd annular protrusion
Sealing structure is set between the internal perisporium of two grades of inner cylinders 61.Make two grades of outer barrels 62 the circumferentially arranged 4th on the internal perisporium of front end
Annular protrusion, and sealing structure is set between fourth annular projection and the periphery wall of one-level outer barrel 52.Thus, the 3rd convex annular
Play the anti-chamber grease chamber that the space between fourth annular projection forms one-level cylinder barrel 5.Similarly, two grades of outer barrels 62 are made outside rear end
Circumferentially arranged 5th annular protrusion on perisporium, and sealing structure is set between the 5th annular protrusion and the internal perisporium of shell 1,
Make circumferentially arranged 6th annular protrusion on the internal perisporium of front end of shell 1, and before the 6th annular protrusion and two grades of outer barrels 62
Sealing structure is set between periphery wall, the space between the 5th annular protrusion and the 6th annular protrusion is formed secondary cylinder cylinder 6
Anti- chamber grease chamber.
As embodiment, the preventing piston rod from rotating component 4 in the present invention includes braking roll 41, one-level square set 42, two
Level square set 43 and scotch 44.Braking roll 41 specifically includes square axis body 411 and is arranged at the first of the square front end of axis body 411 and leads
To first 412.One-level square set 42 specifically includes one-level square casing 421 and is arranged at the second of the front end of one-level square casing 421 and leads
To first 422, one-level square casing 421 is set to open up the square anti-rotating hole 423 of first communicated with its inner chamber on end wall behind.Two grades
Square set 43 specifically includes two grades of square casings 431 and is arranged at the 3rd guide head 432 of two grades of front ends of square casing 431, makes two
Level square casing 431 opens up the square anti-rotating hole 433 of second communicated with its inner chamber on end wall behind.Opened up on scotch 44
Third party's shape anti-rotating hole 441.
In a particular application, the first guide head 412 of braking roll 41 is allowed to be in the one-level square casing 421 of one-level square set 42
In, and make both contact surfaces bonded to each other, allow braking roll 41 square axis body 411 through the first square anti-of one-level square set 42
Turn hole 423 and make both contact surfaces bonded to each other.The rear end of square axis body 411 in braking roll 41 is allowed to pass through the first attachment structure
It is fixedly connected with rear end cap 2.The second guide head 422 of one-level square set 42 is allowed to be in two grades of square casings 431 of two grades of square sets 43
In and make both contact surfaces bonded to each other, allow one-level square set 42 one-level square casing 421 through the second of two grades of square sets 43
Square anti-rotating hole 433 and make both contact surfaces bonded to each other.Scotch 44 is fixed on piston rod 3 by the second attachment structure
Rear end, third party's shape anti-rotating hole 441 is communicated with the guiding groove 31 of piston rod 3.Allow the 3rd guide head of two grades of square sets 43
In the 432 guiding grooves 31 in piston rod 3 and make both contact surfaces bonded to each other, allow two grades of square sleeves of two grades of square sets 43
Pipe 431 passes through third party's shape anti-rotating hole 441 of scotch 44 and makes both contact surfaces bonded to each other.Pass through above structure setting
It is formed the preventing piston rod from rotating component 4 of Telescopic rod structure form so that braking roll 41, one-level square set 42, two grades of and of square set 43
Piston rod 3 can not be rotated about axis only along axial-movement, limit rotary freedom of the piston rod 3 along axis, when outer
After shell 1 is fixed, the anti-rotating function of piston rod 3 is just realized.Preventing piston rod from rotating component 4 in the present invention it is not only simple in construction plus
Work easily, and has the advantages that favorable expandability, more stages square set can be designed as according to above structural principle, to meet big stroke
The receipts of stretching of hydraulic cylinder are required.
As embodiment, above-mentioned first attachment structure in the rear end of braking roll 41 specifically, be sequentially provided with and side
Shape axis body 411 is coaxial and the short cylindrical 413 and short square column 414 that are connected as a single entity, in the junction of short cylindrical 413 and short square column 414
Spacing ring 415 is set, and annular keyway 416 is opened up in the forward position of spacing ring 415.Manhole is opened up on rear end cap 2
22, and fixed disk 45 and two semi-circular card keys 46 are set, and the external diameter of semi-circular card key 46 is more than the straight of manhole 22
Footpath, square anti-rotating hole 451 is opened up on fixed disk 45, is opened up in the front end face of fixed disk 45 for engaging spacing ring 415
With the limited impression 452 of card key 46.Allow in the manhole 22 that the short cylindrical 413 of braking roll 41 is placed on rear end cap 2 and make short
Square column 414 and spacing ring 415 are passed from rear end cap 2, allow two semi-circular card keys 46 to be stuck in annular keyway 416, allow fixed disk
45 are set on short square column 414 by square anti-rotating hole 451 and push down spacing ring 415 and two semi-circular card keys 46, are led to
Cross screw and fixed disk 45 is fixedly connected with both with the screw that correspondence is opened up on rear end cap 2.Wherein, short cylindrical 413 is with after
Sealing structure is provided between the perisporium of the manhole 22 of end cap 2, and makes the four of short square column 414 and square anti-rotating hole 451
It is bonded to each other between individual side wall.First attachment structure of this structure has the advantages that convenient to disassembly.Further, this tool
Body embodiment makes the first square anti-rotating hole 423, the second square anti-rotating hole 433 and third party's shape anti-rotating hole 441 edge on the wall of side
Fore-and-aft direction has opened up the semi-circular recesses of insertion wall thickness, and this structure setting can ensure what preventing piston rod from rotating component 4 was moved
Flatness, and avoid because piston rod 3 be oriented to groove 31 in, in the inner chamber of one-level square set 42 and two grades of square sets 43 inner chamber
Middle have the normal of gas shutoff influence hydraulic cylinder and stretch receipts function, further enhancing practicality.
Second attachment structure is specifically, the rear end of piston rod 3 is opened up for buckle stop on the perisporium of guiding groove 31
The concave station 32 of block 44, and open up screwed hole on the table top of concave station 32.The rear end face of scotch 44 is in third party's shape anti-rotating hole 441
Outside open up multiple square grooves 442 being uniformly distributed circumferentially, and open up tapped through hole in the bottom land of square groove 442,
Allow scotch 44 to be buckled on the concave station 32 of the rear end of piston rod 3 and be fixedly connected with both by screw.This set has knot
Structure is compact, the advantage occupied little space.
It should be noted that the present invention has opened up external screw thread on the rear end periphery wall of shell 1, and in rear end cap 2
Internal thread has been opened up on chamber perisporium, has allowed rear end cap 2 to coordinate spinning in the rearward end of shell 1 by screw thread.The tool dismounting of this structure
Convenient and swift the characteristics of, when hydraulic cylinder internal components are damaged or are broken down, fast assembling-disassembling can be carried out, to repair or more
Change, so as to improve operating efficiency.In addition, the present invention also on the rear end periphery wall of shell 1 and in rear end cap 2 front side position
Put and go back spinning locking nut 7.Stable connection between logical shell 1 and rear end cap 2 can be strengthened by locking nut 7, enter one
Step enhances practicality.
Above example is only the description carried out to the preferred embodiment of the present invention, and model not is claimed to the present invention
The restriction of progress is enclosed, on the premise of design principle of the present invention and spirit is not departed from, this area engineers and technicians are according to this hair
The various forms of deformations that bright technical scheme is made, all should fall into determined by claims of the present invention in protection domain.
Claims (9)
1. a kind of two-action multi-stage anti-rotation hydraulic cylinder, including shell (1), rear end cap (2) and piston rod (3), it is characterised in that：Institute
The periphery for stating piston rod (3) is arranged with cylinder barrel, and piston rod (3) and the cylinder barrel are coaxially installed in the inner chamber of shell (1), rear end
Lid (2) is fixedly installed in the rear end of shell (1), and rear end cap (2) is provided with positive chamber hydraulic fluid port (21), and makes positive chamber hydraulic fluid port (21) with living
Stopper rod (3) is connected with the positive chamber grease chamber of cylinder barrel, and shell (1) is provided with anti-chamber hydraulic fluid port (11), and makes anti-chamber hydraulic fluid port (11) and piston
Bar (3) is connected with the anti-chamber grease chamber of cylinder barrel, includes the preventing piston rod from rotating component (4) of Telescopic rod structure, the preventing piston rod from rotating
The front end of component (4) is placed in the guiding groove (31) that piston rod (3) is opened up along the longitudinal direction in the middle part of rear end face, and piston rod is prevented
The rear end for turning component (4) is fixedly connected with rear end cap (2)；
The preventing piston rod from rotating component (4) includes braking roll (41), one-level square set (42), two grades of square sets (43) and scotch
(44)；The braking roll (41) includes square axis body (411) and is arranged at the first guide head of square axis body (411) front end
(412), the rear end of square axis body (411) is fixedly connected by the first attachment structure with rear end cap (2)；The one-level square set (42)
Including one-level square casing (421) and second guide head (422) of one-level square casing (421) front end is arranged at, one-level is square
The square anti-rotating hole of first communicated with its inner chamber (423) is offered on the aft bulkhead of sleeve pipe (421)；Two grades of square sets (43) bag
Include two grades of square casings (431) and be arranged at the 3rd guide head (432) of two grades of square casing (431) front ends, two grades of square sleeves
The square anti-rotating hole of second communicated with its inner chamber (433) is offered on the aft bulkhead for managing (431)；Scotch (44) connects by second
Binding structure is fixedly connected with the rear end of piston rod (3), and offers on scotch (44) the guiding groove with piston rod (3)
(31) the third party's shape anti-rotating hole (441) communicated；
The first guide head (412) of braking roll (41) is in the one-level square casing (421) of one-level square set (42) and makes both
Contact surface it is bonded to each other, the square axis body (411) of braking roll (41) passes through the first square anti-rotating hole of one-level square set (42)
(423) and make both contact surfaces bonded to each other；
The second guide head (422) of one-level square set (42) is in two grades of square casings (431) of two grades of square sets (43) and makes two
The contact surface of person is bonded to each other, and the one-level square casing (421) of one-level square set (42) is second square through two grades of square sets (43)
Anti-rotating hole (433) and make both contact surfaces bonded to each other；
3rd guide head (432) of two grades of square sets (43) is in the guiding groove (31) of piston rod (3) and makes both contacts
Face is bonded to each other, and two grades of square casings (431) of two grades of square sets (43) pass through third party's shape anti-rotating hole (441) of scotch (44)
And make both contact surfaces bonded to each other.
2. according to a kind of two-action multi-stage anti-rotation hydraulic cylinder described in claim 1, its feature in：The cylinder barrel is provided with two-stage,
Respectively one-level cylinder barrel (5) and secondary cylinder cylinder (6), secondary cylinder cylinder (6) are set in the peripheries of one-level cylinder barrel (5)；The first-stage cylinder
Cylinder (5) and secondary cylinder cylinder (6) use split-type structural, and one-level cylinder barrel (5) includes one-level inner cylinder (51) and one-level outer barrel (52),
One-level inner cylinder (51) is sheathed in the inner chamber of one-level outer barrel (52), the periphery wall of one-level inner cylinder (51) and one-level outer barrel (52) it is interior
The first anti-chamber oil duct (53) is provided between perisporium, one-level inner cylinder (51) is on perisporium corresponding with the first anti-chamber oil duct (53) front end
First through hole (54) is offered, first through hole (54) makes the first anti-chamber oil duct (53) be connected with the anti-chamber grease chamber of piston rod (3), one
Level outer barrel (52) offers the second through hole (55), the second through hole (55) on perisporium corresponding with the first anti-chamber oil duct (53) rear end
The first anti-chamber oil duct (53) is set to be connected with the anti-chamber grease chamber of one-level cylinder barrel (5)；Secondary cylinder cylinder (6) includes two grades of inner cylinders (61) and two
Level outer barrel (62), two grades of inner cylinders (61) are sheathed in the inner chamber of two grades of outer barrels (62), the periphery wall of two grades of inner cylinders (61) and two grades
Between the internal perisporium of outer barrel (62) be provided with the second anti-chamber oil duct (63), two grades of inner cylinders (61) with the second anti-chamber oil duct (63) front end
Third through-hole (64) is offered on corresponding perisporium, third through-hole (64) makes the second anti-chamber oil duct (63) and one-level cylinder barrel (5)
Anti- chamber grease chamber connection, two grades of outer barrels (62) offer fourth hole on perisporium corresponding with the second anti-chamber oil duct (63) rear end
(65), fourth hole (65) connects the second anti-chamber oil duct (63) and the anti-chamber grease chamber of secondary cylinder cylinder (6), secondary cylinder cylinder (6)
Anti- chamber grease chamber is connected with anti-chamber hydraulic fluid port (11).
3. according to a kind of two-action multi-stage anti-rotation hydraulic cylinder described in claim 2, it is characterised in that：The piston rod (3)
Circumferentially arranged with first annular projection on the periphery wall of rear end, it is provided between the first annular raised and internal perisporium of one-level inner cylinder (51)
Circumferentially arranged with the second annular protrusion, the second annular protrusion and piston on sealing structure, the front end internal perisporium of one-level outer barrel (52)
Sealing structure is provided between the periphery wall of bar (3), the anti-chamber grease chamber of piston rod (3) is by first annular raised and the second annular protrusion
Between space formed；
Circumferentially arranged with the 3rd annular protrusion on the rear end periphery wall of one-level outer barrel (52), the 3rd annular protrusion and two grades of inner cylinders
(61) it is provided between internal perisporium convex circumferentially arranged with fourth annular on sealing structure, the front end internal perisporium of two grades of outer barrels (62)
Rise, fourth annular it is raised between the periphery wall of one-level outer barrel (52) provided with sealing structure, the anti-chamber grease chamber of one-level cylinder barrel (5) by
Space between 3rd annular protrusion and fourth annular are raised is formed；
Circumferentially arranged with the 5th annular protrusion on the rear end periphery wall of two grades of outer barrels (62), the 5th annular protrusion and shell (1)
It is provided between internal perisporium on sealing structure, the front end internal perisporium of shell (1) circumferentially arranged with the 6th annular protrusion, the 6th convex annular
Rise and sealing structure is provided between the preceding periphery wall of two grades of outer barrels (62), the anti-chamber grease chamber of secondary cylinder cylinder (6) is by the 5th convex annular
The space risen between the 6th annular protrusion is formed.
4. according to a kind of two-action multi-stage anti-rotation hydraulic cylinder described in claim 1, it is characterised in that：First attachment structure
It is sequentially provided with and square axis body (411) is coaxial and the short cylindrical (413) being connected as a single entity and short square column for the rear end of, braking roll (41)
(414), the junction of short cylindrical (413) and short square column (414) is provided with spacing ring (415), and the forward position of spacing ring (415) is opened
Provided with annular keyway (416), manhole (22) is offered on rear end cap (2), fixed disk (45) and two semi-circulars is additionally provided with
Card key (46), and the radius of card key (46) is more than the radius of manhole (22), fixed disk offers square on (45)
Anti-rotating hole (451), the front end face of fixed disk (45) offers the limited impression for engaging spacing ring (415) and card key (46)
(452)；Allow in the manhole (22) that the short cylindrical (413) of braking roll (41) is placed on rear end cap (2) and make short square column (414)
Passed with spacing ring (415) from rear end cap (2), allow two semi-circular card keys (46) to be stuck in annular keyway (416), allow fixed disk
(45) it is set in by square anti-rotating hole (451) on short square column (414) and pushes down spacing ring (415) and two semi-circular cards
Key (46), makes fixed disk (45) and rear end cap by the screw that correspondence is opened up on screw and fixed disk (45) and rear end cap (2)
(2) it is fixedly connected.
5. according to a kind of two-action multi-stage anti-rotation hydraulic cylinder described in claim 4, it is characterised in that：The short cylindrical (413)
Sealing structure, short square column (414) and square anti-rotating hole are provided between the perisporium of the manhole (22) of rear end cap (2)
(451) it is bonded to each other between four side walls.
6. according to a kind of two-action multi-stage anti-rotation hydraulic cylinder described in claim 5, it is characterised in that：The first square anti-rotation
Offer and pass through along the longitudinal direction on the side wall in hole (423), the second square anti-rotating hole (433) and third party's shape anti-rotating hole (441)
The semi-circular recesses of logical wall thickness.
7. according to a kind of two-action multi-stage anti-rotation hydraulic cylinder described in claim 1, it is characterised in that：Second attachment structure
For, the rear end of piston rod (3) offers the concave station (32) for buckle scotch (44) on the perisporium of guiding groove (31), and
Screwed hole is offered on the table top of concave station (32)；The rear end face of scotch (44) is in the outside of third party's shape anti-rotating hole (441)
Multiple square grooves (442) being uniformly distributed circumferentially are offered, the bottom land of square groove (442) offers tapped through hole, allowed
Scotch (44) is buckled on the concave station (32) of piston rod (3) rear end and makes scotch (44) and piston rod (3) solid by screw
Fixed connection.
8. according to a kind of two-action multi-stage anti-rotation hydraulic cylinder described in claim any one of 1-7, it is characterised in that：The shell
(1) offered on rear end periphery wall and internal thread is offered on external screw thread, the inner chamber perisporium of rear end cap (2), rear end cap (2) passes through
Screw thread coordinates spinning in the rearward end of shell (1).
9. according to a kind of two-action multi-stage anti-rotation hydraulic cylinder described in claim 8, it is characterised in that：After the shell (1)
Hold on periphery wall and the forward position in rear end cap (2) is also installed with locking nut (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610245072.1A CN105673611B (en) | 2016-04-19 | 2016-04-19 | A kind of two-action multi-stage anti-rotation hydraulic cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610245072.1A CN105673611B (en) | 2016-04-19 | 2016-04-19 | A kind of two-action multi-stage anti-rotation hydraulic cylinder |
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| CN105673611A CN105673611A (en) | 2016-06-15 |
| CN105673611B true CN105673611B (en) | 2017-09-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106640840B (en) * | 2017-01-22 | 2018-03-06 | 重庆市巴山液压附件厂有限公司 | A kind of double-stage double-acting for scout car lifts hydraulic jack |
| CN106762960B (en) * | 2017-02-22 | 2018-09-14 | 中冶华天南京工程技术有限公司 | A kind of changeable rod end chamber active area and anti-piston rotating hydraulic cylinder |
| GB2561832A (en) * | 2017-04-21 | 2018-10-31 | Eaton Intelligent Power Ltd | Arrangement for working a tube end |
| CN107387492B (en) * | 2017-09-21 | 2019-03-15 | 北京航天发射技术研究所 | A kind of multistage perpendicular hydraulic cylinder and its way to play for time |
| CN110259761A (en) * | 2019-07-15 | 2019-09-20 | 徐州永佳液压设备有限公司 | Anti-rotation hydraulic cylinder piston rod displacement sensor mounting structure |
| CN115159380B (en) * | 2022-06-09 | 2023-08-04 | 北京航天发射技术研究所 | Integrated large-tonnage hydraulic lifting device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3957125A (en) * | 1971-09-03 | 1976-05-18 | Russell Jr Wayne B | Multi-stage double-acting extendible and contractible shaft drive for drilling device |
| DE2648608C3 (en) * | 1976-10-27 | 1979-11-29 | Walter Hunger Kg, 8770 Lohr | Control device for a differential cylinder |
| IT1295050B1 (en) * | 1997-09-23 | 1999-04-27 | Luciano Migliori | DOUBLE ACTING TELESCOPIC PNEUMATIC ACTUATOR |
| CN2771542Y (en) * | 2005-02-25 | 2006-04-12 | 夏连根 | Multi stage two-acting oil cylinder with split-flow, back-flow throttling device and bottom step oil port |
| CN2931886Y (en) * | 2006-05-23 | 2007-08-08 | 北京交通大学 | Glass fibre reinforced plastic anti-rotary multistage cylinder |
| CN201757028U (en) * | 2010-08-19 | 2011-03-09 | 江苏恒立高压油缸股份有限公司 | Variable-pulp oil cylinder for wind power system |
| CN102943786B (en) * | 2012-12-11 | 2015-08-12 | 湖南特力液压有限公司 | Oil hydraulic cylinder |
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