CN104696310B - Composite hydraulic cylinder device - Google Patents
Composite hydraulic cylinder device Download PDFInfo
- Publication number
- CN104696310B CN104696310B CN201510151309.5A CN201510151309A CN104696310B CN 104696310 B CN104696310 B CN 104696310B CN 201510151309 A CN201510151309 A CN 201510151309A CN 104696310 B CN104696310 B CN 104696310B
- Authority
- CN
- China
- Prior art keywords
- piston
- movable part
- master cylinder
- cylinder
- servicing unit
- 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
- F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
-
- 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
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
-
- 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
- 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
-
- 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
- F15B15/28—Means for indicating the position, e.g. end of stroke
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention relates to a composite hydraulic cylinder device which comprises a main cylinder and an auxiliary device. The auxiliary device is connected with a piston rod in the main cylinder to drive the piston rod in the main cylinder to return to a specified position when pressure, on the piston rod in the main cylinder, of a working medium in the main cylinder is lower than preset pressure of the auxiliary device. The auxiliary device connected with the piston rod in the main cylinder is arranged; when the pressure applied on the piston rod in the main cylinder by the working medium in the main cylinder is lower than the preset pressure of the auxiliary device, the auxiliary device can drive the piston rod in the main cylinder to return to the specified position, so that when the pressure, on the piston rod in the main cylinder, of the working medium in the main cylinder cannot be maintained constant, the piston rod in the main cylinder can still be ensured to return to the specified position to avoid the piston rod staying at a large-stroke position for a long time so as to meet different working needs.
Description
Technical field
A kind of the present invention relates to technical field of hydraulic pressure, more particularly to compound hydraulic cylinder device.
Background technology
At present, it is double go out hydraulic piston rod cylinder typically by groups such as cylinder barrel, cylinder bottom, fairlead, piston, piston rod and seals
Into cylinder barrel is located at the outer wall of hydraulic cylinder, bears hydraulic fluid pressure during work；Cylinder bottom is integrally welded with cylinder barrel, forms hydraulic cylinder
Closing chamber, when hydraulic cylinder is compressed to dead point, piston is typically in contact with it；Fairlead acts primarily as support and ensures piston rod and cylinder barrel
The effect of axiality, the also sealing for hydraulic cylinder mouth provide a bearing；Piston is one of critical component of hydraulic cylinder, in liquid
Move back and forth in cylinder pressure, bear load pressure；Piston rod be supporting piston acting connection member, major applications oil cylinder,
It is the high moving component of motion frequency, technical requirements in cylinder moving execution unit.
Illustrate so that existing pair goes out hydraulic piston rod oil cylinder as an example below, as shown in figure 1, going out in prior art pairs
The structural representation of hydraulic piston rod oil cylinder.The oil cylinder includes that a cylinder barrel a1, piston rod a2, piston a3, a left side lead
To set a4 and right fairlead a5 and left oil port P1With right oil port P2, wherein piston rod a2 and piston a3 can be integral type structure, piston
A3 can slide axially in cylinder barrel a1, and the inner chamber of cylinder barrel a1 is separated into left chamber independent mutually and right chamber, cylinder barrel by piston a3
The left oil port P communicated with left chamber is provided with a11The right oil port P communicated with right chamber2.In the cylinder barrel a1 of this hydraulic jack, which is left
Chamber is not connected with right chamber, as left oil port P1During oil-feed, oil pressure promotes piston a3 and drives piston rod a2 phases together
For cylinder barrel a1 moves right, the hydraulic oil of right chamber is from right oil port P2Discharge；As right oil port P2Oil-feed, oil pressure promote piston a3 simultaneously
Piston rod a2 is driven to be moved to the left relative to cylinder barrel a1 together, the hydraulic oil of left chamber is from left oil port P1Discharge.
It is traditional it is double go out hydraulic piston rod cylinder, although move left and right can piston rod by pressure, but the hydraulic cylinder
The problem of presence is：Either left chamber also or pressure is given in two chambers simultaneously, can not all make piston to pressure or right chamber to pressure
Accurately stop to the specified a certain position of cylinder barrel.
The content of the invention
The purpose of the present invention is to propose to a kind of compound hydraulic cylinder device, solves of the prior art pair and goes out hydraulic piston rod cylinder
Cannot realize that piston stops the problem of a certain specified location to cylinder barrel.
For achieving the above object, the invention provides a kind of compound hydraulic cylinder device, including master cylinder and servicing unit, described
Servicing unit is connected with the piston rod in the master cylinder, so that working media of the servicing unit in the master cylinder is to described
When the pressure of the piston rod in master cylinder is less than the preset pressure of the servicing unit, the piston rod in the master cylinder is driven to return to
Specified location.
Further, the piston rod in the master cylinder is First piston bar, the master cylinder also include the first sealing structure, the
In one piston, the first cylinder barrel and second seals structure, wherein described first piston in first cylinder barrel, described first lives
Stopper rod is fixed and is arranged in the first piston and the second seals structure, and is moved with the movement of the first piston,
First sealing structure and the second seals structure are respectively used to seal the two ends of the master cylinder, to form closed chamber.
Further, the piston rod in the master cylinder is First piston bar, the master cylinder also include the first sealing structure, the
In one piston, the first cylinder barrel and second seals structure, wherein described first piston in first cylinder barrel, described first lives
Stopper rod is fixed and is arranged in the first piston, first sealing structure and the second seals structure, and with described first
The movement of piston and move, first sealing structure and the second seals structure are respectively used to seal the two of the master cylinder
End, to form closed chamber.
Further, first sealing structure of the master cylinder be fairlead, the second seals structure be with it is described
The cylinder bottom that first cylinder barrel is fixedly connected.
Further, first sealing structure and the second seals structure of the master cylinder is fairlead.
Further, the both sides of the first piston in the master cylinder form the 3rd chamber and the 4th chamber, institute respectively
First piston bar is stated in the pressure suffered by the 3rd within the chamber and between the pressure suffered by the 4th within the chamber
When difference is more than the preset pressure of the servicing unit, the First piston bar is from the specified location to two lateral movements, described
The direction of motion of First piston bar is determined according to the sign of the difference；The First piston bar is in the 3rd within the chamber
Suffered pressure and the difference between the pressure suffered by the 4th within the chamber are less than the default pressure of the servicing unit
During power, the First piston bar is recovered from the two lateral specified locations.
Further, the servicing unit is fluid pressure type resetting means, can drive the master according to default hydraulic pressure
Piston rod in cylinder returns to specified location.
Further, the servicing unit includes the second cylinder barrel, second piston, the 3rd piston and second piston bar, described
Piston rod in master cylinder is fixedly connected with the second piston bar, so that the master cylinder and servicing unit connection, described the
It is provided with shoulder in two cylinder barrels, the second piston and the 3rd piston are respectively placed in the both sides of the shoulder, described second
It is provided with piston rod on the axis of convex, the second piston and the 3rd piston and is provided with hollow structure, it is described
Second piston bar is arranged in two hollow structures, and causes the convex to be located at the second piston and the 3rd work
Between plug, the Breadth Maximum of the second piston bar is less than or equal to the minimum diameter of second cylinder barrel, and is more than described second
The Breadth Maximum of the hollow structure on piston and the 3rd piston, the second piston and the 3rd piston being capable of phases
For the second piston bar is moved.
Further, the specified location of the piston rod in the master cylinder is by the work in the position of the convex, the master cylinder
The position of the fixed position of the piston on stopper rod and the shoulder is determining.
Further, the master cylinder shares same cylinder bottom with the servicing unit.
Further, the servicing unit is Purely mechanical resetting means, can be according to default Purely mechanical pressure-driven
Piston rod in the master cylinder returns to specified location.
Further, the servicing unit includes fixed mount and the first axostylus axostyle, is provided with first movable on the fixed mount
Part and the second movable part, first axostylus axostyle are fixedly connected with the piston rod in the master cylinder, so that the master cylinder and described auxiliary
Help device to connect, on the axis of the fixed mount, first movable part and second movable part, be provided with hollow knot
Structure, is provided with two lug bosses on first axostylus axostyle, first axostylus axostyle through the fixed mount, first movable part and
The hollow structure of second movable part, and cause first movable part and second movable part to be located at described two projections
Between portion, the Breadth Maximum of described two lug bosses is more than hollow structure on first movable part and second movable part
Width, and less than or equal to the width of hollow structure on the fixed mount, first axostylus axostyle can be relative to the fixed mount, institute
The first movable part and second movable part movement is stated, it is upper in first movable part and described second in first axostylus axostyle
The first spring of least one set is provided with position between movable part.
Further, the fixed mount includes first end plate, the second end plate, the first side plate and the second side plate, wherein described
First end plate and second end plate are individually fixed in the end of same one end of first side plate and second side plate.
Further, the servicing unit also includes support, and the support connects the cylinder of the fixed mount and the master cylinder
Cylinder.
Further, first movable part is the first portable plate, and second movable part is the second portable plate, described the
One portable plate and second portable plate are movably installed between first side plate and second side plate.
Further, at least one second axostylus axostyles are additionally provided with the fixed mount, and described at least one second axostylus axostyles are solid
It is due between the first end plate and second end plate, movable positioned at described first on each described at least one second axostylus axostyle
Least one set second spring is provided with position between part and second movable part.
Further, the servicing unit is electromagnetic type resetting means, can drive the master cylinder according to pre-given electromagnetic power
Interior piston rod returns to specified location.
Further, the servicing unit includes fixed mount and the first axostylus axostyle, is provided with first movable on the fixed mount
Part and the second movable part, first axostylus axostyle are fixedly connected with the piston rod in the master cylinder, so that the master cylinder and described auxiliary
Help device to connect, on the axis of the fixed mount, first movable part and second movable part, be provided with hollow knot
Structure, is provided with two lug bosses on first axostylus axostyle, first axostylus axostyle through the fixed mount, first movable part and
The hollow structure of second movable part, and cause first movable part and second movable part to be located at described two projections
Between portion, the Breadth Maximum of described two lug bosses is more than hollow structure on first movable part and second movable part
Width, and less than or equal to the width of hollow structure on the fixed mount, first axostylus axostyle can be relative to the fixed mount, institute
The first movable part and second movable part movement is stated, it is upper in first movable part and described second in first axostylus axostyle
Least one set electromagnet is provided with position between movable part.
Based on the servicing unit that above-mentioned technical proposal, the present invention are connected with master cylinder inner piston rod by setting, when in master cylinder
Working media to the piston rod pressure applied in master cylinder less than servicing unit preset pressure when, servicing unit can drive
Piston rod in dynamic master cylinder returns to specified location, so, when in master cylinder, working media can not to the pressure of master cylinder inner piston rod
When keeping constant, the compound hydraulic cylinder device of the present invention still ensures that the piston rod in master cylinder returns to the position specified, it is to avoid
Piston rod long-time is rested at larger stroke, so as to meet different work requirements.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is in the prior art pairs of structural representation for going out hydraulic piston rod oil cylinder.
Fig. 2 is the structural representation of compound hydraulic cylinder device one embodiment in the present invention.
Fig. 3 is the structural representation of another embodiment of compound hydraulic cylinder device in the present invention.
Fig. 4 is the first motion state schematic diagram of compound hydraulic cylinder device in Fig. 3 embodiments.
Fig. 5 is the second motion state schematic diagram of compound hydraulic cylinder device in Fig. 3 embodiments.
Fig. 6 is the structural representation of compound hydraulic cylinder device further embodiment in the present invention.
Fig. 7 is the first motion state schematic diagram of compound hydraulic cylinder device in Fig. 6 embodiments.
Fig. 8 is the second motion state schematic diagram of compound hydraulic cylinder device in Fig. 7 embodiments.
In figure：A1- cylinder barrels, a2- piston rods, a3- pistons, the left fairleads of a4-, the right fairleads of a5-, P1- left oil port, P2- right
Hydraulic fluid port；
100；100′；100 "-compound hydraulic cylinder device, 101；101′；101 "-master cylinder, 102；102′；102 "-auxiliary dress
Put；
1- First piston bars, the first sealing structures of 2-, 3- first pistons, the first cylinder barrels of 4-, 5- second seals structures；
The 3rd sealing structures of 201-, the second cylinder barrels of 202-, 203- second pistons, the 3rd pistons of 204-, 205- second pistons
Bar, 206- convexes, 207- shoulders；
301- supports, 302- first end plates, the second end plates of 303-, the first side plates of 304-, the second side plates of 305-, 306- first
Portable plate, the second portable plates of 307-, the first axostylus axostyles of 308-, the first springs of 309-, the second axostylus axostyles of 310-, 311- second springs.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely retouched
State.Obviously, described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Based on this
Bright embodiment, the every other enforcement obtained under the premise of creative work is not made by those of ordinary skill in the art
Example, belongs to the scope of protection of the invention.
In describing the invention, it is to be understood that term " " center ", " horizontal ", " longitudinal direction ", "front", "rear",
"left", "right", " on ", D score, " vertical ", " level ", " top ", " bottom ", " interior ", the orientation of the instruction such as " outward " or position relationship be
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or dark
Show that the device or element of indication there must be specific orientation, with specific azimuth configuration and operation therefore it is not intended that right
The restriction of the scope of the present invention.
First, the invention provides a kind of compound hydraulic cylinder device, including master cylinder and servicing unit, the servicing unit with
In the master cylinder piston rod connection so that the servicing unit in the working media in the master cylinder to the work in the master cylinder
When the pressure of stopper rod is less than the preset pressure of the servicing unit, the piston rod in the master cylinder is driven to return to specified location.
The servicing unit that the present invention is connected with master cylinder inner piston rod by setting, when the working media in master cylinder is in master cylinder
Piston rod pressure applied less than servicing unit preset pressure when, servicing unit can drive the piston rod in master cylinder extensive
Specified location is arrived again, it is so, when in master cylinder, working media can not keep constant to the pressure of master cylinder inner piston rod, of the invention
Compound hydraulic cylinder device still ensures that the piston rod in master cylinder returns to the position specified, it is to avoid piston rod long-time rest on compared with
At big stroke, so as to meet different work requirements.
Wherein master cylinder can be singly go out formula hydraulic piston rod cylinder, or it is double go out formula hydraulic piston rod cylinder, also may be used certainly
Being other structures.
Preferably, the both sides of the first piston in the master cylinder form the 3rd chamber and the 4th chamber respectively, described
First piston bar is in the pressure suffered by the 3rd within the chamber and the difference between the pressure suffered by the 4th within the chamber
Value more than the servicing unit preset pressure when, the First piston bar from the specified location to two lateral movements, described the
The direction of motion of one piston rod is determined according to the sign of the difference；The First piston bar is in the 3rd within the chamber institute
The pressure being subject to and the difference between the pressure suffered by the 4th within the chamber are less than the preset pressure of the servicing unit
When, the First piston bar is recovered from the two lateral specified locations.
For servicing unit, its concrete structure can have multiple choices, as long as its effect can be reached.Such as, it is auxiliary
Help device be fluid pressure type resetting means, the piston rod in the master cylinder can be driven to return to finger according to default hydraulic pressure
Positioning is put；Servicing unit can also be Purely mechanical resetting means, can according to default Purely mechanical pressure-driven master cylinder
Interior piston rod returns to specified location；Servicing unit can also be electromagnetic type resetting means, can be driven according to pre-given electromagnetic power
The piston rod moved in the master cylinder returns to specified location；Servicing unit can also be using motor, belt, gear or electromechanical knot
Mode of conjunction etc..Wherein several servicing units can be described in detail below.
As shown in Fig. 2 for the structural representation of compound hydraulic cylinder device one embodiment in the present invention.Can from figure
Go out, one embodiment of the compound hydraulic cylinder device 100 of the present invention, including master cylinder 101 and servicing unit 102, wherein master cylinder 101
Including First piston bar 1, the first sealing structure 2, first piston 3, the first cylinder barrel 4 and second seals structure 5, wherein described first
In piston 3 in first cylinder barrel 4, the First piston bar 1 is fixed and is arranged in the first piston 3 and described second close
In seal structure 5, and move with the movement of the first piston 3, first sealing structure 2 and the second seals structure 5
It is respectively used to seal the two ends of the master cylinder 101, to form closed chamber.
In the master cylinder 101, the both sides of the first piston 3 form the 3rd chamber (3 chamber) and the 4th chamber (4 respectively
Chamber), be provided with the master cylinder 101 the import and export D that connects with the 3rd chamber (3 chamber) and with the 4th chamber (4 chamber)
The import and export E of connection.
Servicing unit 102 is fluid pressure type resetting means, including the second cylinder barrel 202, second piston 203,204 and of the 3rd piston
Second piston bar 205, the First piston bar 3 are fixedly connected with the second piston bar 205, so that the master cylinder 101 and institute
State servicing unit 102 to connect.
Shoulder 207 is provided with second cylinder barrel 202, the second piston 203 and the 3rd piston 204 are put respectively
Convex 206, the second piston 203 and described is provided with the both sides of the shoulder 207, the second piston bar 205
Hollow structure is provided with the axis of three pistons 204, and the second piston bar 205 is arranged in two hollow structures
It is interior, and the convex 206 is located between the second piston 203 and the 3rd piston 204, the second piston bar
Minimum diameter of 205 Breadth Maximum less than or equal to second cylinder barrel 202, and it is more than the second piston 203 and described the
The Breadth Maximum of the hollow structure on three pistons 204, the second piston 203 and the 3rd piston 204 can be relative
Move in the second piston bar 205.When the convex 206 and the shoulder 207 align, the First piston bar 1 is arrived
Up to the specified location.
Each self-enclosed first chamber (1 chamber) is disposed with second cylinder barrel 202, (5 chambers, in figure for the 5th chamber
It is not shown), the 6th chamber (6 chambers, figure not shown in) and second chamber (2 chamber), be provided with second cylinder barrel 202 with it is described
The import and export A and the import and export B connected with the 5th chamber and the 6th chamber of first chamber connection, second cylinder
The import and export C with the 6th chamber is provided with cylinder 202.
When the difference of the hydraulic pressure for coming from the import and export D and the import and export E suffered by the First piston bar 1
When value is more than the default hydraulic pressure of the servicing unit 102, the First piston bar 1 is transported from the specified location to both sides
Dynamic, the direction of motion of the First piston bar 1 is determined according to the sign of the difference；
When above-mentioned difference is positive sign, the pressure coming from import and export D suffered by First piston bar 1 is more than and comes from turnover
The pressure of mouthful E, then First piston bar 1 is towards making and import and export the 3rd chamber (3 chamber) volume that D connect to become big direction (such as figure
2, to the right) motion, until the 4th chamber (4 chamber) disappears；When above-mentioned difference is negative sign, coming from suffered by First piston bar 1
The pressure of D is imported and exported less than the pressure for coming from import and export E, then First piston bar 1 is towards the 4th chamber for making and importing and exporting E to connect
Room (4 chamber) volume becomes big direction (such as Fig. 2, to the left) motion, until the 3rd chamber (3 chamber) disappears.
When the difference of the hydraulic pressure for coming from the import and export D and the import and export E suffered by the First piston bar 1
When value is less than the default hydraulic pressure of the servicing unit 102, the First piston bar 1 is extensive from the two lateral specified locations
It is multiple.
In the above-described embodiments, the compound hydraulic cylinder device 100 is connected with First piston bar 1 in master cylinder 101 by arranging
Fluid pressure type servicing unit 102, when the pressure applied to the First piston bar 1 in master cylinder 101 by the working media in master cylinder 101
When power is less than the preset pressure of servicing unit 102, servicing unit 102 can drive the First piston bar 1 in master cylinder 101 to return to
Specified location, so, when in master cylinder 101, working media can not keep constant to the pressure of First piston bar 1 in master cylinder 101,
The compound hydraulic cylinder device of the present invention still ensures that the First piston bar 1 in master cylinder 101 returns to the position specified (such as schemed
Position shown in 2), it is to avoid piston rod long-time is rested at larger stroke, so as to meet different work requirements.
For the compound hydraulic cylinder device 100 of above-mentioned employing fluid pressure type servicing unit 102, in master cylinder 101, first lives
The specified location of stopper rod 1 is meant that：By in the position of convex 206, the position of shoulder 207 and master cylinder 101 in servicing unit 102
Position determined by fixed position of the first piston 3 in the First piston bar 1.That is, when any in these three positions
When one or more change, the specified location of First piston bar 1 can also change, but for one kind specifically
For the compound hydraulic cylinder device of shaping, its specified location is unique, because in shaping, above three position is also unique
It is determined that.
More also it should be noted that import and export A on the second cylinder barrel 202 of servicing unit 102 in Fig. 2 embodiments
Pressure and import and export C pressure can remain identical, i.e., second piston 203 and the 3rd piston 204 bear identical pressure
Power, so, the preset pressure in servicing unit is a value, and the direction of motion of First piston bar 1 is by comparing the preset pressure
Import and export the pressure differential of D and import and export E to determine with coming from suffered by First piston bar 1；Certainly, on the second cylinder barrel 202
Import and export A pressure and import and export the pressure of C can also be different, i.e., second piston 203 bears different from the 3rd piston 204
Pressure, so, the preset pressure in servicing unit includes two values, if the pressure applied to second piston 203 by import and export A
Power is referred to as the first preset pressure, C is imported and exported to 204 pressure applied of the 3rd piston referred to as the second preset pressure, then first
The direction of motion of piston rod 1 needs the difference by comparing the first preset pressure and the second preset pressure and 1 institute of First piston bar
Coming from for being subject to is imported and exported D with the pressure differential for importing and exporting E to determine.
In addition, the master cylinder 101 and servicing unit 102 shown in Fig. 2 shares same sealing structure (i.e. second seals structure
5), the sealing structure is referred to as cylinder bottom, and the two ends of servicing unit 102 pass through the cylinder bottom and the 3rd sealing structure 201 respectively
To seal.First sealing structure 2 and the 3rd sealing structure 201 can be fairlead or other sealing structures, the 3rd sealing
Hollow structure is provided with the axis of structure 201, and second piston bar 205 passes through above-mentioned hollow structure.In other embodiments,
Master cylinder 101 and servicing unit 102 can also be attached by other means, such as directly by the first cylinder barrel 4 and the second cylinder barrel
202 are welded to connect, or the 102 each self sealss of master cylinder 101 and servicing unit, and then the two passes through 1 He of First piston bar outside
Being fixedly connected and connecting between second piston bar 205.Certainly, these connected modes are also applied for the master cylinder of following other forms
The connection and servicing unit of other forms between.
The shape of convex 206 as shown in Figure 2 can be cylinder, or other shapes, as long as can be by second
Piston 203 and the 3rd piston 204 are kept apart on the position of second piston bar 205, and can drive second piston 203 or
Three relative motions on second piston bar 205 of piston 204.
As shown in figure 3, for the structural representation of another embodiment of compound hydraulic cylinder device in the present invention.It is combined in Fig. 3
Hydraulic cylinder device 100 ' includes master cylinder 101 ' and servicing unit 102, and its middle auxiliary device 102 is filled with the auxiliary in Fig. 2 embodiments
Put 102 identical, the version for differing only in master cylinder 101 ' is different from the version of master cylinder in Fig. 2 101.Master cylinder 101 is
The piston-type hydraulic cylinder for singly going out, and master cylinder 101 ' for it is double go out piston-type hydraulic cylinder, the interior First piston bar 1 of master cylinder 101 ' fixes
It is arranged in first piston 3, the first sealing structure 2 and second seals structure 5, i.e., the two ends of First piston bar 1 pass first
Cylinder barrel 4, formation pair go out formula hydraulic piston rod cylinder, and other structures are identical with master cylinder 101.
As shown in Figure 4 and Figure 5, the first motion state of compound hydraulic cylinder device and the second fortune respectively in Fig. 3 embodiments
The schematic diagram of dynamic state.With reference to Fig. 3, Fig. 4 and Fig. 5, and it is with master cylinder 101 ' and the working media in servicing unit 102
As a example by hydraulic oil, the operation principle of compound hydraulic cylinder device 100 ' is illustrated：
Import and export A, import and export C connection identical oil circuits, its input pressure is identical, i.e. second piston 203 and the 3rd piston
204 bear identical pressure.Compound hydraulic cylinder device 100 ' in the course of the work, is imported and exported A, import and export C and connects identical all the time
Pressure, import and export B connection fuel tank.The compound hydraulic cylinder device 100 ' in non-working condition, live by First piston bar 1, second
Stopper rod 205 does not stretch out, and keeps state as shown in Figure 3.
Pressurize when E oil-feeds are imported and exported, when the pressure that first piston 3 is subject to is more than the pressure that second piston 203 is subject to, 4 chambers
Volume increases, i.e., first piston 3 is under pressure and drives First piston bar 1 to move to left, and D mouth oil returns, 3 cavity volumes are decreased to disappear.By
Link into an integrated entity with First piston bar 1 in second piston bar 205, second piston bar 205 is moved to left with First piston bar 1,1 cavity volume
Diminish or disappear, i.e., on second piston bar 205, be provided with convex 206, convex 206 drives second piston 203 to move to left, while being formed
5 chambers, B mouths oil-feeds compensate 5 chambers.E mouths pressurization after cylinder movement state as shown in Figure 4.
When E mouth input pressures are decreased to less than acting on the pressure in second piston 203, First piston bar 1 and second
Piston rod 205 is reset to position as shown in Figure 3, i.e. A mouths and enters pressure oil, and 1 chamber is recovered, and B mouth oil returns, 5 chambers disappear, D mouth oil-feeds
3 chambers are compensated, 3 chambers return to state as shown in Figure 3.
Pressurize when D oil-feeds are imported and exported, when the pressure that first piston 3 is subject to is more than the pressure that second piston 203 is subject to, 3 chambers
Volume increases, i.e., first piston 3 is under pressure and drives First piston bar 1 to move to right, and E mouth oil returns, 4 cavity volumes are decreased to disappear.By
Link into an integrated entity with First piston bar 1 in second piston bar 205, second piston bar 205 is moved to right with First piston bar 1,2 cavity volumes
Reduce or disappear, i.e., on second piston bar 205, be provided with convex 206, convex 206 drives the 3rd piston 204 to move to right, while being formed
6 chambers, B mouths oil-feeds compensate 6 chambers.D mouths pressurization after cylinder movement state as shown in Figure 5.
When D mouth input pressures are decreased to less than acting on the pressure on the 3rd piston 204, First piston bar 1 and second
Piston rod 205 is reset to position as shown in Figure 3, i.e. C mouths and enters pressure oil, and 2 chambers are recovered, and B mouth oil returns, 6 chambers disappear, E mouth oil-feeds
4 chambers are compensated, 4 chambers return to state as shown in Figure 3.
As shown in fig. 6, for the structural representation of compound hydraulic cylinder device further embodiment in the present invention.It is combined in Fig. 6
Hydraulic cylinder device 100 " including master cylinder 101 " and servicing unit 102 ', the version and Fig. 3 of master cylinder 101 and servicing unit 102 '
The version of master cylinder 101 ' and servicing unit 102 in embodiment is different.
First sealing structure 2 and second of master cylinder 101 " and pair piston-type hydraulic cylinder for going out, but master cylinder 101 in Fig. 6 " is close
Seal structure 5 adopts fairlead, is provided with hollow structure on two fairlead axis, and First piston bar 1 is fixed and is arranged in
In first piston 3, the first sealing structure 2 and second seals structure 5, the two ends of First piston bar 1 pass the first cylinder barrel 4, shape
Cheng Shuan goes out formula hydraulic piston rod cylinder, and other structures are identical with master cylinder 101 '.
Servicing unit 102 ' is Purely mechanical resetting means, including fixed mount and the first axostylus axostyle 308, is pacified on the fixed mount
Equipped with the first movable part and the second movable part, first axostylus axostyle 308 is fixedly connected with the First piston bar 1, so that described
Master cylinder 101 " and the servicing unit 102 ' connect, in the fixed mount, first movable part and second movable part
Hollow structure is provided with axis, two lug bosses are provided with first axostylus axostyle 308, and first axostylus axostyle 308 is passed through
The hollow structure of the fixed mount, first movable part and second movable part, and cause first movable part and institute
The second movable part is stated between described two lug bosses, the Breadth Maximum of described two lug bosses is more than first movable part
With the width of hollow structure on second movable part, and less than or equal to the width of hollow structure on the fixed mount, described
One axostylus axostyle 308 can be moved relative to the fixed mount, first movable part and second movable part, in the first axle
It is located on bar 308 on the position between first movable part and second movable part and is provided with the first spring of least one set
309。
The difference of the hydraulic pressure for coming from the import and export D and the import and export E suffered by the First piston bar 1
More than first spring 309 pretightning force when, the First piston bar 1 from the specified location to two lateral movements, described
The direction of motion of one piston rod 1 is determined according to the sign of the difference；
When above-mentioned difference is positive sign, the pressure coming from import and export D suffered by First piston bar 1 is more than and comes from turnover
The pressure of mouthful E, then First piston bar 1 is towards making and import and export the 3rd chamber (3 chamber) volume that D connect to become big direction (such as figure
2, to the right) motion, until the 4th chamber (4 chamber) disappears；When above-mentioned difference is negative sign, coming from suffered by First piston bar 1
The pressure of D is imported and exported less than the pressure for coming from import and export E, then First piston bar 1 is towards the 4th chamber for making and importing and exporting E to connect
Room (4 chamber) volume becomes big direction (such as Fig. 2, to the left) motion, until the 3rd chamber (3 chamber) disappears.
The difference of the hydraulic pressure for coming from the import and export D and the import and export E suffered by the First piston bar 1
Less than first spring 309 pretightning force when, the First piston bar 1 is recovered from the two lateral specified locations.
In the above-described embodiments, compound hydraulic cylinder device 100 " by arranging and master cylinder 101 " the interior First piston bar 1 connects
The servicing unit 102 ' of the fluid pressure type for connecing, when the First piston bar 1 in master cylinder 101 " interior working media is to master cylinder 101 " is applied
Plus pressure when being less than 102 ' default initial tension of spring of servicing unit, servicing unit 102 ' can drive master cylinder 101 " in the
One piston rod 1 returns to specified location, so, when the pressure of master cylinder 101 " interior working media is to master cylinder 101 " interior First piston bar 1
When power can not keep constant, the compound hydraulic cylinder device of the present invention still ensures that master cylinder 101, and " interior First piston bar 1 is returned to
The position (position such as shown in Figure 6) specified, it is to avoid piston rod long-time is rested at larger stroke, so as to meet difference
Work requirements.
For the compound hydraulic cylinder device 100 of above-mentioned employing Purely mechanical servicing unit 102 ' in " for, master cylinder 101 "
The specified location of one piston rod 1 is meant that：By the distance between two lug bosses on the first axostylus axostyle 308 of servicing unit 102 '
" the position determined by fixed position of the interior first piston 3 in the First piston bar 1 with master cylinder 101.That is, working as the two
When any one in position changes, the specified location of First piston bar 1 can also change, but specific for one kind
The compound hydraulic cylinder device being molded for, its specified location be it is unique because shaping when, above-mentioned two position
It is well-determined.
As shown in fig. 6, fixed mount can include first end plate 302, the second end plate 303, the first side plate 304 and the second side plate
305, wherein described first end plate 302 and second end plate 303 are individually fixed in first side plate 304 and second side
The end of same one end of plate 305, i.e. fixed mount can surround quadrangle or other shapes, can surround pros in order to attractive in appearance
Shape.Certainly, the first end plate 302 and second end plate 303 can also be individually fixed in first side plate 304 and described
The end of the opposite side of the second side plate 305, such fixed mount form two triangles, and such structure is more consolidated.
Preferably, the servicing unit 102 ' also includes support 301, and the support 301 connects the fixed mount and described
First cylinder barrel 4.
In addition, the specific constructive form of the first movable part and the second movable part can have many kinds, and such as, the first movable part
Can be movable rod or the other structures of portable plate, or cylinder with the second movable part, it is preferable that described first lives
Moving part can be the first portable plate 306, and second movable part is the second portable plate 307, first portable plate 306 and described
Second portable plate 307 is movably installed between first side plate 304 and second side plate 305.
Servicing unit described above 102 ' can also include the combining structure form of multiple axostylus axostyles and spring, specifically, institute
State, described at least one second axostylus axostyles 310 are fixed on the first end
Between plate 302 and second end plate 303, on each described at least one second axostylus axostyle 310 be located at first movable part and
Least one set second spring 311 is provided with position between second movable part.
As shown in Figure 7 and Figure 8, the first motion state of compound hydraulic cylinder device and the second fortune respectively in Fig. 6 embodiments
The schematic diagram of dynamic state.With reference to Fig. 6, Fig. 7 and Fig. 8, and with master cylinder 101 " as a example by interior working media is as hydraulic oil, to multiple
The operation principle of conjunction hydraulic cylinder device 100 " is illustrated：
When D mouth oil returns are pressurizeed in the oil-feed of E mouths, the right side stress of first piston 3, First piston bar 1 is moved to left, the second portable plate
307 move to left, the first spring 309 and second spring 311 are compressed by the second portable plate 307, as shown in Figure 7.When E mouths reduce pressure,
Possessed spring force by the first spring 309 for compressing and second spring 311, First piston bar 1 can be made to recover to as shown in Figure 6
Position, while the first spring 309 and second spring 311 reset, D mouth oil-feeds, to compensate the pressure of the 3rd chamber in master cylinder.
When E mouth oil returns are pressurizeed in the oil-feed of D mouths, the left side stress of first piston 3, First piston bar 1 is moved to right, the first portable plate
306 move to right, the first spring 309 and second spring 311 are compressed by the first portable plate 306, as shown in Figure 8.When D mouths reduce pressure,
Possessed spring force by the first spring 309 for compressing and second spring 311, First piston bar 1 can be made to recover to as shown in Figure 6
Position, while the first spring 309 and second spring 311 reset, E mouth oil-feeds, to compensate the pressure of the 4th chamber in master cylinder.
The version of the servicing unit of the present invention, except fluid pressure type as shown in Figure 3 and Purely mechanical as shown in Figure 6
Outside, can also be electromagnetic type.The version of electromagnetic type servicing unit 102 " can have many kinds, as long as according to default electricity
Piston rod in magnetically-actuated master cylinder returns to specified location.Such as, its version could be arranged to and Fig. 6 embodiments
The structure of middle auxiliary device 102 ' is identical, and the first spring and second spring are replaced with electromagnet simply.
To sum up, the present invention describes the master cylinder of three kinds of forms and the servicing unit of three kinds of forms altogether, certainly of the invention
Master cylinder and servicing unit are not only limited in this several form, as long as the master cylinder of other forms and servicing unit can reach the present invention
Purpose, also within protection scope of the present invention.In addition, Fig. 2-8 also illustrate only three kinds of preferred combining forms, it is different
There can also be various other combining forms between the master cylinder and servicing unit of form.Such as, can be by master cylinder 101 and servicing unit
102 ' are combined, it is also possible to by master cylinder 101 and servicing unit 102 " be combined etc..
Compound hydraulic cylinder device proposed by the present invention, combines the stop place for realizing piston rod by master cylinder and servicing unit
Put.Total is divided into servicing unit and master cylinder, can share a cylinder bottom using two hydraulic cylinders, it would however also be possible to employ with bullet
Spring, electromagnet or other servicing units with recovery and driving force.By the cooperation of servicing unit and master cylinder：
1. can realize three stop places of First piston bar, and also can adjust in master cylinder first piston relative to
The stop place of the first cylinder barrel.
2. the size of servicing unit input pressure can be adjusted, and the constant then reset force of pressure is constant.
3. the compact conformation of the present invention, is conducive to saving space, the layout between each part of reasonable arrangement.
4. in the second cylinder barrel shoulder design, dexterously solve asking for spacing second piston and the 3rd piston movement stroke
Topic.
5. on second piston bar convex design, realize by second piston bar to pull second piston and the 3rd piston
The purpose of motion.
6. First piston bar is fixedly connected with second piston bar in the present invention, realizes the integration fortune of two piston rods
It is dynamic.
Finally it should be noted that：Above example is only to illustrate technical scheme rather than a limitation；To the greatest extent
Pipe has been described in detail to the present invention with reference to preferred embodiment, and those of ordinary skill in the art should be understood：Still
The specific embodiment of the present invention can be modified or equivalent is carried out to some technical characteristics；Without deviating from this
The spirit of bright technical scheme, which all should be covered in the middle of the technical scheme scope being claimed in the present invention.
Claims (17)
1. a kind of compound hydraulic cylinder device, it is characterised in that including master cylinder (101；101′；101 ") and servicing unit (102；
102′；102 "), the servicing unit (102；102′；102 ") with the master cylinder (101；101′；101 " piston rod in) connects
Connect, so that the servicing unit (102；102′；102 ") in the master cylinder (101；101′；101 " working media in) is to described
Master cylinder (101；101′；The pressure of the piston rod in 101 ") is less than the servicing unit (102；102′；102 " preset pressure)
When, drive the master cylinder (101；101′；101 " piston rod in) returns to specified location；
The master cylinder (101；101′；101 ") First piston bar (1) and first piston (3), the master cylinder (101 are included；101′；
The both sides of the first piston (3) in 101 ") form the 3rd chamber and the 4th chamber respectively,
First piston bar (1) is in the pressure suffered by the 3rd within the chamber and in the pressure suffered by the 4th within the chamber
Difference between power is more than the servicing unit (102；102′；During preset pressure 102 "), First piston bar (1) is from institute
Specified location is stated to two lateral movements, the direction of motion of First piston bar (1) is determined according to the sign of the difference；
First piston bar (1) is in the pressure suffered by the 3rd within the chamber and in the pressure suffered by the 4th within the chamber
Difference between power is less than the servicing unit (102；102′；During preset pressure 102 "), First piston bar (1) is from two
The lateral specified location is recovered.
2. compound hydraulic cylinder device according to claim 1, it is characterised in that the piston rod in master cylinder (101) is
First piston bar (1), master cylinder (101) also include the first sealing structure (2), first piston (3), the first cylinder barrel (4) and the
In two sealing structures (5), wherein described first piston (3) in the first cylinder barrel (4), described First piston bar (1) is solid
Surely it is arranged in the first piston (3) and the second seals structure (5), and moves with the movement of the first piston (3)
Dynamic, the first sealing structure (2) and the second seals structure (5) are respectively used to seal the two ends of the master cylinder (101), with
Form closed chamber.
3. compound hydraulic cylinder device according to claim 1, it is characterised in that the master cylinder (101 '；101 " work in)
Stopper rod is First piston bar (1), and master cylinder (101 ') also include the first sealing structure (2), first piston (3), the first cylinder barrel
(4) and second seals structure (5), in wherein described first piston (3) in the first cylinder barrel (4), the first piston
Bar (1) fixation is arranged in the first piston (3), first sealing structure (2) and the second seals structure (5), and
Move with the movement of the first piston (3), the first sealing structure (2) and the second seals structure (5) are used respectively
In sealing the master cylinder (101 '；101 " two ends), to form closed chamber.
4. compound hydraulic cylinder device according to claim 3, it is characterised in that described the first of master cylinder (101 ') is close
Seal structure (2) is fairlead, and second seals structure (5) are the cylinder bottom being fixedly connected with the first cylinder barrel (4).
5. compound hydraulic cylinder device according to claim 3, it is characterised in that (described the first of 101 ") is close for the master cylinder
Seal structure (2) and the second seals structure (5) are fairlead.
6. compound hydraulic cylinder device according to claim 1, it is characterised in that described servicing unit (102) are fluid pressure type
Resetting means, can drive the master cylinder (101 according to default hydraulic pressure；101′；101 " piston rod in) returns to specified
Position.
7. compound hydraulic cylinder device according to claim 6, it is characterised in that described servicing unit (102) include second
Cylinder barrel (202), second piston (203), the 3rd piston (204) and second piston bar (205), the master cylinder (101；101′；
101 " piston rod in) is fixedly connected with second piston bar (205), so that the master cylinder (101；101′；101 ") and institute
Servicing unit (102) connection is stated, in the second cylinder barrel (202), shoulder (207), second piston (203) and institute is provided with
The both sides that the 3rd piston (204) is respectively placed in the shoulder (207) are stated, on second piston bar (205), convex is provided with
(206), it is provided with hollow structure on the axis of second piston (203) and the 3rd piston (204), described second
Piston rod (205) is arranged in two hollow structures, and causes described convex (206) to be located at the second piston (203)
And the 3rd piston (204) between, the Breadth Maximum of second piston bar (205) is less than or equal to second cylinder barrel
(202) minimum diameter, and more than the hollow structure in the second piston (203) and the 3rd piston (204)
Breadth Maximum, second piston (203) and the 3rd piston (204) can be transported relative to described second piston bar (205)
It is dynamic.
8. compound hydraulic cylinder device according to claim 7, it is characterised in that the master cylinder (101；101′；101 " in)
Piston rod specified location by the convex (206) position, the master cylinder (101；101′；101 " on the piston rod in)
The position of the fixed position of piston and the shoulder (207) is determining.
9. compound hydraulic cylinder device according to claim 7, it is characterised in that the master cylinder (101；101′；101 ") with
Described servicing unit (102) share same cylinder bottom.
10. compound hydraulic cylinder device according to claim 1, it is characterised in that described servicing unit (102 ') are pure machine
Tool formula resetting means, can according to default Purely mechanical pressure-driven master cylinder (101；101′；101 " piston rod in) is extensive
Specified location is arrived again.
11. compound hydraulic cylinder devices according to claim 10, it is characterised in that described servicing unit (102 ') include solid
Determine frame and the first axostylus axostyle (308), the first movable part and the second movable part, first axostylus axostyle are installed on the fixed mount
(308) with the master cylinder (101；101′；101 " piston rod in) is fixedly connected, so that the master cylinder (101；101′；101″)
Connect with described servicing unit (102 '), on the axis of the fixed mount, first movable part and second movable part
Hollow structure is provided with, two lug bosses on the first axostylus axostyle (308), are provided with, described first axostylus axostyle (308) pass through institute
State the hollow structure of fixed mount, first movable part and second movable part, and cause first movable part and described
Second movable part is located between described two lug bosses, the Breadth Maximum of described two lug bosses more than first movable part and
The width of hollow structure on second movable part, and less than or equal to the width of hollow structure on the fixed mount, described first
Axostylus axostyle (308) can be moved relative to the fixed mount, first movable part and second movable part, in the first axle
It is located on bar (308) on the position between first movable part and second movable part and is provided with the first spring of least one set
(309)。
12. compound hydraulic cylinder devices according to claim 11, it is characterised in that the fixed mount includes first end plate
(302), the second end plate (303), the first side plate (304) and the second side plate (305), it is wherein described first end plate (302) and described
Second end plate (303) is individually fixed in the end of same one end of the first side plate (304) and second side plate (305).
13. compound hydraulic cylinder devices according to claim 11, it is characterised in that servicing unit (102 ') also include
Support (301), described support (301) connect the fixed mount and the master cylinder (101；101′；101 " cylinder barrel).
14. compound hydraulic cylinder devices according to claim 12, it is characterised in that first movable part is first movable
Plate (306), second movable part are the second portable plate (307), the first portable plate (306) and second portable plate
(307) movably it is installed between the first side plate (304) and second side plate (305).
15. compound hydraulic cylinder devices according to claim 12, it is characterised in that be additionally provided with least on the fixed mount
One the second axostylus axostyle (310), described at least one second axostylus axostyles (310) are fixed on the first end plate (302) and described second
Between end plate (303), first movable part and described second movable on each described at least one second axostylus axostyle (310), is located at
Least one set second spring (311) is provided with position between part.
16. compound hydraulic cylinder devices according to claim 1, it is characterised in that (102 ") are electromagnetism to the servicing unit
Formula resetting means, can drive the master cylinder (101 according to pre-given electromagnetic power；101′；101 " piston rod in) returns to specified
Position.
17. compound hydraulic cylinder devices according to claim 16, it is characterised in that (102 ") include solid the servicing unit
Determine frame and the first axostylus axostyle (308), the first movable part and the second movable part, first axostylus axostyle are installed on the fixed mount
(308) with the master cylinder (101；101′；101 " piston rod in) is fixedly connected, so that the master cylinder (101；101′；101″)
(102 ") connect, on the axis of the fixed mount, first movable part and second movable part with the servicing unit
Hollow structure is provided with, two lug bosses on the first axostylus axostyle (308), are provided with, described first axostylus axostyle (308) pass through institute
State the hollow structure of fixed mount, first movable part and second movable part, and cause first movable part and described
Second movable part is located between described two lug bosses, the Breadth Maximum of described two lug bosses more than first movable part and
The width of hollow structure on second movable part, and less than or equal to the width of hollow structure on the fixed mount, described first
Axostylus axostyle (308) can be moved relative to the fixed mount, first movable part and second movable part, in the first axle
It is located on bar (308) on the position between first movable part and second movable part and is provided with least one set electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510151309.5A CN104696310B (en) | 2015-04-01 | 2015-04-01 | Composite hydraulic cylinder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510151309.5A CN104696310B (en) | 2015-04-01 | 2015-04-01 | Composite hydraulic cylinder device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104696310A CN104696310A (en) | 2015-06-10 |
| CN104696310B true CN104696310B (en) | 2017-03-22 |
Family
ID=53343750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510151309.5A Active CN104696310B (en) | 2015-04-01 | 2015-04-01 | Composite hydraulic cylinder device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104696310B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618835B (en) * | 2016-11-25 | 2019-06-28 | 蒋建辉 | A kind of electromechanical integration medical treatment pulling equipment |
| CN108412847B (en) * | 2018-04-26 | 2023-06-20 | 福建工程学院 | Electro-hydrostatic actuator with load compensation and high position precision and control method |
| CN109458030B (en) * | 2018-11-22 | 2024-06-25 | 武汉理工大学 | Hydraulic transmission self-resetting supporting device |
| CN110259760B (en) * | 2019-07-09 | 2024-06-18 | 北京理工大学珠海学院 | High-frequency rodless coupling power cylinder and use method thereof |
| CN112024053B (en) * | 2020-09-18 | 2021-12-28 | 湖南三一快而居住宅工业有限公司 | Drive adjusting device and rubbing crusher |
| CN113700695B (en) * | 2021-08-13 | 2023-09-08 | 中国煤炭科工集团太原研究院有限公司 | Power transmission device for different mediums and use method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2731175Y (en) * | 2004-09-10 | 2005-10-05 | 北京工业大学 | Self-reset magnetic current change damper |
| CN102278412A (en) * | 2011-07-08 | 2011-12-14 | 华侨大学 | Shear type magnetorheological buffer compensator |
| CN102912778A (en) * | 2011-08-05 | 2013-02-06 | 四川宏华石油设备有限公司 | Locking device and hydraulic control system thereof |
| CN203948380U (en) * | 2014-03-06 | 2014-11-19 | 航天长征化学工程股份有限公司 | Self-resetting cylinder |
| CN104154160A (en) * | 2014-08-11 | 2014-11-19 | 浙江建科减震科技有限公司 | Self-resetting viscous damper |
-
2015
- 2015-04-01 CN CN201510151309.5A patent/CN104696310B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2731175Y (en) * | 2004-09-10 | 2005-10-05 | 北京工业大学 | Self-reset magnetic current change damper |
| CN102278412A (en) * | 2011-07-08 | 2011-12-14 | 华侨大学 | Shear type magnetorheological buffer compensator |
| CN102912778A (en) * | 2011-08-05 | 2013-02-06 | 四川宏华石油设备有限公司 | Locking device and hydraulic control system thereof |
| CN203948380U (en) * | 2014-03-06 | 2014-11-19 | 航天长征化学工程股份有限公司 | Self-resetting cylinder |
| CN104154160A (en) * | 2014-08-11 | 2014-11-19 | 浙江建科减震科技有限公司 | Self-resetting viscous damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104696310A (en) | 2015-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104696310B (en) | Composite hydraulic cylinder device | |
| CN104395064B (en) | Machine press | |
| CN104196819A (en) | Double-purpose through hole type four-level oil cylinder | |
| CN106762894B (en) | The method of hydraulic double cylinder synchronously control self-tipping type semitrailer carriage lifting | |
| CN202538447U (en) | Vertical press filter hydraulic system | |
| CN201836284U (en) | Energy-collecting shock absorber | |
| CN103994042A (en) | Piston type hydraulic pump with crank connecting rod structure | |
| CN204041368U (en) | Adopt the piston type hydraulic pumps of brace and connecting rod framework | |
| CN108266413B (en) | Asymmetric electro-hydrostatic actuator based on pressure selection valve | |
| CN105545883B (en) | The electro-hydraulic differential cylinder assembly of pump control | |
| CN204082755U (en) | Simultaneous equation oil cylinder | |
| CN203023168U (en) | Double-action multi-level oil cylinder | |
| CN201313787Y (en) | Front and rear correcting device of hydraulic diaphragm wall grab | |
| CN203488477U (en) | Second-level synchronous hydraulic cylinder | |
| CN102889262A (en) | Combined type hydraulic cylinder with floating cylinder barrel | |
| CN108571479B (en) | Single-plunger supercharger | |
| CN103061717B (en) | A kind of four cylinder type hydraulic oil pumps | |
| CN201843842U (en) | Pressurized cylinder capable of storing oil | |
| CN201255153Y (en) | Differential pressure type internal inverting automatic cycle oil cylinder | |
| CN201953739U (en) | Main hydraulic cylinder of press machine | |
| CN209276138U (en) | A kind of hydraulic drive mechanism for fluid assembly and disassembly arm | |
| CN102943752A (en) | Displacement-adjustment driving mechanism for hydraulic pump | |
| CN203022699U (en) | Energy-saving hydraulic pumping unit | |
| CN105201949B (en) | Hydraulic piston reversing mechanism | |
| CN104006025B (en) | The hinged interior rod-type plunger case of a kind of single-acting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |