CN106246640B - A kind of piston rod construction for being used to connect multiple hydraulic cylinders - Google Patents
A kind of piston rod construction for being used to connect multiple hydraulic cylinders Download PDFInfo
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- CN106246640B CN106246640B CN201610791653.5A CN201610791653A CN106246640B CN 106246640 B CN106246640 B CN 106246640B CN 201610791653 A CN201610791653 A CN 201610791653A CN 106246640 B CN106246640 B CN 106246640B
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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
- F15B15/1457—Piston rods
Abstract
The invention provides a kind of piston rod construction for being used to connect multiple hydraulic cylinders, belong to hydraulic machinery technical field.It solves the problem of existing occasion more narrow and small in space, the installation difficulty of oil circuit.This is used for the piston rod construction for connecting multiple hydraulic cylinders, including a piston rod, the main oil gallery for being connected with single-action hydraulic cylinder one is offered on piston rod, time oil duct group and/or secondary oil duct three are provided with piston rod vertically, piston body one and/or piston body two are installed with piston rod, the inner chamber of corresponding double acting hydraulic cylinder can be divided into upper oil cavitie and lower oil cavitie by piston body one, secondary oil duct group can connect with upper oil cavitie and lower oil cavitie respectively, the inner chamber of corresponding single-action hydraulic cylinder two can be divided into fluid chamber and without oil pocket, secondary oil duct tee joint fluid chamber by piston body two.Multiple hydraulic cylinders can be connected on a piston rod by this piston rod construction, and structural compactness is good, and suitable for the small occasion in space, applicability is good, easy to install, improves operating efficiency.
Description
Technical field
The invention belongs to hydraulic machinery technical field, is related to a kind of piston rod construction, particularly a kind of multiple for connecting
The piston rod construction of hydraulic cylinder.
Background technology
Single-action hydraulic cylinder refers to that the motion in one of direction is realized with oil pressure, outer by deadweight or spring etc. during return
Power, two chambers of this oil cylinder only have one end to have oil, and the other end then can only produce thrust with air contact, this kind of oil cylinder.
Such as Chinese patent application (application number：201120421807.4) a kind of single-action hydraulic cylinder, including cylinder barrel, cylinder cap and work are disclosed
Stopper rod piston rod, the cylinder cap are arranged on cylinder barrel one end, and the cavity in cylinder barrel is divided into rod chamber and without bar by piston rod
Chamber, the length direction of rodless cavity interior edge hydraulic cylinder is provided with least one first flexible member, the first flexible member one end
Against on the piston rod, the other end is resisted against on cylinder cap, and pilot hole is offered on piston rod, guide rod is provided with cavity, should
Guide rod one end is located on cylinder cap, and the other end is slidably inserted into pilot hole.
Double acting hydraulic cylinder is exactly that two chambers have oil, and the action of both direction will be realized by oil pressure, double acting cylinder
Body is the most frequently used hydraulic cylinder type, there is provided the stroke of the output of both direction, such as Chinese patent application (application number：
201310169385.X) disclosed in a kind of double-acting piston hydraulic cylinder.
In existing hydraulic-mechanic system, it is often necessary to by one or more single-action hydraulic cylinder and double acting hydraulic cylinder
It is used in series, but either double acting hydraulic cylinder or single-action hydraulic cylinder, it is required for that oil circuit is installed in cylinder body periphery, it is shared
Space it is big, in the occasion that some spaces are more narrow and small, the installation of oil circuit is more difficult, influences the progress of work, poor for applicability.
The content of the invention
The purpose of the present invention is above mentioned problem be present for existing technology, it is proposed that one kind is used to connect multiple hydraulic cylinders
Piston rod construction, the technical problems to be solved by the invention are：How to realize and connect more in the less occasion of spatial dimension
Double acting hydraulic cylinder and single-action hydraulic cylinder.
The purpose of the present invention can be realized by following technical proposal：A kind of piston rod knot for being used to connect multiple hydraulic cylinders
Structure, including a piston rod, it is characterised in that main oil gallery is offered on the piston rod, the main oil gallery is used for and single-acting
Hydraulic cylinder one is connected, and is provided with least one set of secondary oil duct group for being used to connect double acting hydraulic cylinder on the piston rod vertically
And/or it is at least one be used to connect the secondary oil duct three of single-action hydraulic cylinder two, be installed with least one piston on the piston rod
Body one and/or at least one piston body two, the quantity of the piston body one is identical with the quantity of double acting hydraulic cylinder and energy will be right
The inner chamber of double acting hydraulic cylinder is answered to be divided into upper oil cavitie and lower oil cavitie, the secondary oil duct group can connect with upper oil cavitie and lower oil cavitie respectively
Logical, the quantity of the piston body two is identical with the quantity of single-action hydraulic cylinder two and can be by the inner chamber of corresponding single-action hydraulic cylinder two
It is divided into fluid chamber and without oil pocket, the secondary oil duct tee joint fluid chamber.
During this piston rod construction application for being used to connect multiple hydraulic cylinders, single-action hydraulic cylinder one is connected to piston rod
One end, the fluid chamber of the single-action hydraulic cylinder one connect with main oil gallery, are pressed oil through main oil gallery feed flow, and hydraulic oil enters single-acting liquid
The fluid chamber of cylinder pressure one promotes single-action hydraulic cylinder one to be operated, and single-action hydraulic cylinder is multiple under spring and self gravitation effect
Position.Meanwhile it is additionally provided with least one set of oil duct group and/or at least one set of oil duct three, secondary oil duct group vertically on the piston rod
For the fuel feeding of double acting hydraulic cylinder, secondary oil duct three is used for the fuel feeding of single-action hydraulic cylinder two, and hydraulic oil can be through secondary oil duct component
Upper oil cavitie and lower oil cavitie fuel feeding not to double acting hydraulic cylinder, so as to realize that double acting hydraulic cylinder produces linear reciprocation along piston rod
Motion；Hydraulic oil can make single-action hydraulic cylinder two through fuel feeding in secondary oil duct three fluid chamber of single-action hydraulic cylinder two corresponding to
Action.The specific number of single-action hydraulic cylinder two and double acting hydraulic cylinder can select according to the actual requirements.
This is used for piston rod construction the matching somebody with somebody by main oil gallery, secondary oil duct group and/or secondary oil duct three for connecting multiple hydraulic cylinders
Design is closed, single-action hydraulic cylinder one and single-action hydraulic cylinder two and/or double acting hydraulic cylinder can be connected on one vertically
On piston rod, piston rod or single-action hydraulic cylinder one, single-action hydraulic cylinder two and double acting hydraulic cylinder are fixed respectively during work, are led to
Crossing hydraulic energy makes single-action hydraulic cylinder one, single-action hydraulic cylinder two and double acting hydraulic cylinder movement realize work, or nonoculture
It is superimposed with the hydraulic coupling of hydraulic cylinder one, single-action hydraulic cylinder two and double acting hydraulic cylinder, the movement of piston rod opposing hydraulic cylinder, also
It is to say, without setting more piston rods and without in hydraulic cylinder periphery installation oil circuit so that the compactedness of structure is preferable, is applied to
The less occasion of spatial dimension, applicability are good so that install and use more convenient, improve the efficiency of work.Certainly, single-acting liquid
The structure of cylinder pressure one can be structure as single-action hydraulic cylinder two or have bar hydraulic cylinder.
Be used to connect the piston rod construction of multiple hydraulic cylinders above-mentioned, the secondary oil duct group include can respectively with it is double
The secondary oil duct one and time oil duct two that the upper oil cavitie of acting cylinder connects with lower oil cavitie.Can be toward double-action hydraulic through secondary oil duct one
The upper oil cavitie fuel feeding of cylinder so that double acting hydraulic cylinder moves up in the presence of oil pressure along piston rod, can through secondary oil duct two
Toward the lower oil cavitie fuel feeding of double acting hydraulic cylinder so that double acting hydraulic cylinder moves down in the presence of oil pressure along piston rod.This
Secondary oil duct one, secondary oil duct two and the main oil gallery of piston rod construction for connecting multiple hydraulic cylinders are independent structure, and are integrated
On the piston rod, therefore can be by single-action hydraulic cylinder one, multiple double acting hydraulic cylinders and/or the edge of multiple single-action hydraulic cylinders two
Piston rod it is axially mounted so that the compactedness of structure is preferable, suitable for the less occasion of spatial dimension so that install and use more
It is convenient, improve the efficiency of work.
Above-mentioned in connecting the piston rod construction of multiple hydraulic cylinders, the secondary oil duct one and time oil duct two to be respectively provided with
Horizontal segment and vertical section, the horizontal segment of the secondary oil duct one and the horizontal segment of the secondary oil duct two through piston rod side wall and
It can be connected with the upper oil cavitie or lower oil cavitie of double acting hydraulic cylinder, the vertical section of the secondary oil duct one and the secondary oil duct two
Vertical section is respectively positioned in the main oil gallery and end passes main oil gallery, between the secondary oil duct one and main oil gallery and described
Gap is respectively provided between secondary oil duct two and main oil gallery.The horizontal segment of secondary oil duct one and time oil duct two runs through the side wall of piston rod, peace
During dress, double acting hydraulic cylinder is arranged on the piston rod, and along piston rod to distribution, and secondary oil duct one and time oil duct two is vertical
Section integrated installation is in main oil gallery, and the oil-feed of main oil gallery is by between secondary oil duct one and main oil gallery and secondary oil duct two and main oil
Gap between road is carried out, and the oil-feed of secondary oil duct one and time oil duct two passes the end progress of main oil gallery by vertical section, enters one
Step reduces required installing space.
It is used to connect the piston rod construction of multiple hydraulic cylinders above-mentioned, the horizontal segment of the secondary oil duct one and time oil duct
Two horizontal segment is set positioned at the both sides up and down of piston body one and the upper side respectively close to piston body one and downside respectively.On
State setting, can ensure double acting hydraulic cylinder done along piston rod straight reciprocating motion stability it is preferable.
Be used to connect the piston rod construction of multiple hydraulic cylinders above-mentioned, the secondary oil duct three have it is horizontally disposed go out
Oily section and the oil-feed section being vertically arranged, described fuel-displaced section through piston rod side wall and can be with the fluid of single-action hydraulic cylinder two
Chamber is connected, and the oil-feed section is located in the main oil gallery and end passes main oil gallery, the oil-feed section outer wall with main oil gallery
There is gap between wall.The design of secondary oil duct three, can connect multiple single-action hydraulic cylinders two on the piston rod, horizontally disposed
The fuel-displaced section of side wall for being located at piston rod, single-action hydraulic cylinder two are arranged coupled logical on the piston rod, single-action hydraulic cylinder two
Oil-feed the end of main oil gallery passed by oil-feed section carry out so that single-action hydraulic cylinder two moves, single-action hydraulic cylinder
Two reset is carried out by the elastic force of self gravitation and spring.Fuel-displaced section of this oil duct three and time oil duct one and secondary oil duct two
Horizontal segment is axially spaced apart up and down along piston rod, its be more than or equal to distance between the two single-action hydraulic cylinder two or
The vertical section of the maximum shift motion of double acting hydraulic cylinder, the oil-feed Duan Yuci oil ducts one of this oil duct three and time oil duct two is side by side
It is arranged in main oil gallery and the inwall with main oil gallery has gap, the gap is used for the oil-feed of main oil gallery, further ensures
The compactedness of structure, reduce required installing space.
It is used to connecting the piston rod construction of multiple hydraulic cylinders above-mentioned, the main oil gallery, secondary oil duct one, secondary oil duct two
Cylindrical with secondary oil duct three, the main oil gallery and the concentric setting of the piston rod are the vertical section of the secondary oil duct one, secondary
The vertical section of oil duct two and the oil-feed section of time oil duct three are set in parallel in main oil gallery.The structure design of circular tube shaped, and it is secondary
The oil-feed section of the vertical section of oil duct one, the vertical section of secondary oil duct two and secondary oil duct three is set in parallel in main oil gallery and and main oil gallery
Inwall between closely against reasonably make use of installing space so that total is more compact, and installing space is small, so as to
Realize and realize more double acting hydraulic cylinders of series connection and single-action hydraulic cylinder two in the less occasion of spatial dimension.
It is used to connecting the piston rod construction of multiple hydraulic cylinders above-mentioned, the main oil gallery, secondary oil duct one, secondary oil duct two
Cylindrical with secondary oil duct three, the main oil gallery and the concentric setting of the piston rod are the vertical section of the secondary oil duct one, secondary
The vertical section of oil duct two and the oil-feed section of time oil duct three are located in successively from inside to outside in main oil gallery and each vertical section or oil-feed section
Both ends between sealed by seal.It is above-mentioned reasonable in design to make use of installing space so that total is more tight
Gather, installing space is small, and more double acting hydraulic cylinders of series connection and single-acting liquid are realized in the less occasion of spatial dimension so as to realize
Cylinder pressure two.And above-mentioned structure design is used, the machine-shaping to each oil duct on piston rod is also more convenient.
Above-mentioned in connecting the piston rod construction of multiple hydraulic cylinders, there is annular slot, institute on the piston rod
State and be arranged with annular slot outside annular collar and annular collar part stretching annular slot, the piston body one and piston body two
On be respectively provided with the recessed shoulder of annular, annular pressing plate is provided with the recessed shoulder of annular, the annular collar lower surface is resisted against annular recessed shoulder
On, upper surface is with annular pressing plate against the annular pressing plate is bolted on the recessed shoulder of annular and is pressed on annular collar
Between the recessed shoulder of annular and annular pressing plate.Annular collar can be designed as two and open or three annular collars opened, during installation, by annular
Collar card compresses on the piston rod, then by annular pressing plate, during dismounting, back-outs bolt, takes out, more convenient.
Above-mentioned in connecting the piston rod construction of multiple hydraulic cylinders, the piston rod to be made of steel pipe.Piston
Bar is made of seamless steel pipe, and intensity is preferable.
Compared with prior art, this piston rod construction for being used to connect multiple hydraulic cylinders has advantages below：
1st, can be by single-action hydraulic cylinder one and list by the matching design of main oil gallery, secondary oil duct group and/or secondary oil duct three
Acting cylinder two and/or double acting hydraulic cylinder are connected on a piston rod vertically, piston rod or single-acting liquid during work
Cylinder pressure one, single-action hydraulic cylinder two and double acting hydraulic cylinder are fixed respectively, make single-action hydraulic cylinder one, single-acting by hydraulic energy
Hydraulic cylinder two and double acting hydraulic cylinder are moved to realize work, or single-action hydraulic cylinder one, single-action hydraulic cylinder two and double cropping
It is superimposed with the hydraulic coupling of hydraulic cylinder, without setting more piston rods and without in hydraulic cylinder periphery installation oil circuit so that structure
Compactedness is preferable, good suitable for the less occasion of spatial dimension, versatility so that installs and uses more convenient, improves work
Efficiency.
2nd, the vertical section of secondary oil duct one and secondary oil duct two and the oil-feed section of secondary oil duct three are arranged in main oil gallery, rationally
Make use of installing space so that total is more compact, and installing space is small, so as to realize in the less occasion of spatial dimension
In cause single-action hydraulic cylinder one, double acting hydraulic cylinder and/or single-action hydraulic cylinder two be used in series.
Brief description of the drawings
Fig. 1 is the schematic diagram that embodiment one is used to connect the piston rod construction of multiple hydraulic cylinders.
Fig. 2 is the sectional view of the piston rod of embodiment one.
Fig. 3 is the enlarged drawing at A in Fig. 1.
Fig. 4 is the enlarged drawing at B in Fig. 1.
Fig. 5 is the schematic diagram that embodiment two is used to connect the piston rod construction of multiple hydraulic cylinders.
Fig. 6 is the sectional view of the piston rod of embodiment two.
Fig. 7 is the enlarged drawing at C in Fig. 5.
Fig. 8 is the schematic diagram that embodiment three is used to connect the piston rod construction of multiple hydraulic cylinders.
Fig. 9 is the sectional view of the piston rod of embodiment three.
Figure 10 is the schematic diagram that example IV sheet is used to connect the piston rod construction of multiple hydraulic cylinders.
Figure 11 is the sectional view of example IV piston rod.
In figure, 1, piston rod；1a, main oil gallery；2nd, single-action hydraulic cylinder one；3rd, secondary oil duct group；3a, secondary oil duct one；It is 3b, secondary
Oil duct two；3b1, horizontal segment；3b2, vertical section；4th, double acting hydraulic cylinder；4a, upper oil cavitie；4b, lower oil cavitie；5th, piston body one；
5a, annular collar；5b, annular pressing plate；6th, secondary oil duct three；6a, fuel-displaced section；6b, oil-feed section；7th, spring；8th, bolt；9th, single-acting
Hydraulic cylinder two；9a, fluid chamber；9b, without oil pocket；10th, piston body two.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one
As Figure 1-4, this piston rod construction for being used to connect multiple hydraulic cylinders, including a piston rod 1, piston rod 1
It is made of seamless steel pipe, main oil gallery 1a is offered on piston rod 1, main oil gallery 1a runs through the both ends of piston rod 1.On piston rod 1
At least one set of oil duct group 3 is provided with vertically.In the present embodiment, secondary oil duct group 3 is one group, and according to demand, secondary oil duct group 3 can be with
To be multigroup.
As shown in figure 1, main oil gallery 1a is used to be connected with single-action hydraulic cylinder 1, the single-action hydraulic cylinder 1 is to have bar
Hydraulic cylinder, main oil gallery 1a connect with single-action hydraulic cylinder 1, are pressed oil by main oil gallery 1a to the feed flow of single-action hydraulic cylinder 1, from
And realize that the single-action hydraulic cylinder 1 works, single-action hydraulic cylinder 1 is resetted by spring 7.
As shown in Figure 1-2, be fixedly provided with piston rod 1 inner chamber of double acting hydraulic cylinder 4 can be divided into upper oil cavitie 4a and
Lower oil cavitie 4b piston body 1, the quantity of piston body 1 is identical with time quantity of oil duct group 3 and corresponds setting, secondary oil duct
Group 3 include can respectively with the upper oil cavitie 4a and lower oil cavitie 4b of double acting hydraulic cylinder 4 3a of secondary oil duct one connect and secondary oil duct two
3b, during installation, double acting hydraulic cylinder 4 is set on piston rod 1, is capable of oiling toward double acting hydraulic cylinder 4 through the secondary 3a of oil duct one
Chamber 4a fuel feeding so that double acting hydraulic cylinder 4 moves up in the presence of oil pressure along piston rod 1, can be past through the secondary 3b of oil duct two
The lower oil cavitie 4b fuel feeding of double acting hydraulic cylinder 4 so that double acting hydraulic cylinder 4 moves down in the presence of oil pressure along piston rod 1.
As shown in figure 3, the secondary 3a of oil duct one and time 3b of oil duct two are respectively provided with horizontal segment 3b1 and vertical section 3b2, horizontal segment 3b1
Through piston rod 1 side wall and can be connected with the upper oil cavitie 4a or lower oil cavitie 4b of double acting hydraulic cylinder 4, vertical section 3b2 is located at
In main oil gallery 1a and end passes main oil gallery 1a, is connected between horizontal segment 3b1 and vertical section 3b2 for arc transition, secondary oil duct one
Gap is respectively provided between 3a and main oil gallery 1a and between the 3b of secondary oil duct two and main oil gallery 1a.The secondary 3a of oil duct one horizontal segment 3b1
Horizontal segment 3b1 with the secondary 3b of oil duct two is respectively positioned at the both sides up and down of piston body 1 and respectively close to the upper side of piston body 1
Set with downside.Main oil gallery 1a, the 3a of secondary oil duct one and the 3b of secondary oil duct two are cylindrical, and main oil gallery 1a and piston rod 1 are coaxial
The heart is set, and the secondary 3a of oil duct one vertical section 3b2 and time 3b of oil duct two vertical section 3b2 are set in parallel in main oil gallery 1a, secondary
Between the 3a of oil duct one, the 3b of secondary oil duct two and main oil gallery 1a mutually closely against.
As shown in figure 4, having annular slot on piston rod 1, annular collar 5a and annular collar are arranged with annular slot
5a is stretched out outside annular slot part, and the recessed shoulder of annular is respectively provided with piston body 1 and piston body 2 10, annular is provided with the recessed shoulder of annular
Pressing plate 5b, annular collar 5a lower surface are resisted against on the recessed shoulder of annular, and upper surface is with annular pressing plate 5b against annular pressing plate 5b passes through
Bolt 8 is fixed on the recessed shoulder of annular and annular collar 5a is pressed between the recessed shoulder of annular and annular pressing plate 5b.Annular collar 5a can
Opened or the three annular collar 5a opened with being designed as two, during installation, annular collar 5a is stuck on piston rod 1, then pass through annular pressure
Plate 5b is compressed, and during dismounting, is back-outed bolt 8, is taken out, more convenient.
Embodiment two
The structure of the present embodiment and embodiment one are essentially identical, and its difference is：As illustrated in figs. 5-7, on piston rod 1
At least one set of oil duct group 3 and at least one secondary oil duct 36 are provided with vertically.Time oil duct group 3 and time oil duct 36 in the present embodiment
It is one group, certainly according to demand, may also set up multigroup secondary oil duct group 3 and multiple secondary oil ducts 36.The structure of secondary oil duct group 3 with
Secondary oil duct group 3 in embodiment one is identical.At least one piston body 2 10, the number of piston body 2 10 are fixedly provided with piston rod 1
Amount is identical with the quantity of single-action hydraulic cylinder 29 and the inner chamber of corresponding single-action hydraulic cylinder 29 can be divided into fluid chamber 9a and nothing
Oil pocket 9b, secondary oil duct 36 connect and spring 7 are provided with fluid chamber 9a, no oil pocket 9b, the both ends of spring 7 respectively with without in oil pocket 9b
Wall and piston body 2 10 are against, secondary oil duct 36 has horizontally disposed fuel-displaced section of 6a and is vertically arranged oil-feed section 6b, fuel-displaced section
6a runs through the side wall of piston rod 1 and can be connected with the fluid chamber 9a of single-action hydraulic cylinder 29, and oil-feed section 6b is located at main oil gallery
In 1a and end passes main oil gallery 1a, is moved by oil pressure single-action hydraulic cylinder 29, and single-action hydraulic cylinder 29 passes through bullet
The elastic reset of spring 7.
As shown in fig. 6, main oil gallery 1a, the 3a of secondary oil duct one, the 3b of secondary oil duct two and secondary oil duct 36 are cylindrical, main oil gallery
1a and 1 concentric setting of piston rod, the secondary 3a of oil duct one vertical section 3b2, the 3b of secondary oil duct two vertical section 3b2 and secondary oil duct 36
Oil-feed section 6b be set in parallel in main oil gallery 1a.
Embodiment three
The structure of the present embodiment and embodiment one are essentially identical, and its difference is：As Figure 8-9, on piston rod 1
At least one secondary oil duct 36 is provided with vertically, and secondary oil duct 36 is used to be connected with single-action hydraulic cylinder 29, the knot of secondary oil duct 36
Structure and with secondary oil duct 36 connection the structure of single-action hydraulic cylinder 29 it is identical with embodiment two.Time oil duct in this implementation
36 are set to one, certainly according to demand, can also set multiple secondary oil ducts 36.
Example IV
The structure of the present embodiment and embodiment two are essentially identical, and its difference is：As shown in figs. 10-11, main oil gallery
1a, the 3a of secondary oil duct one, the 3b of secondary oil duct two and secondary oil duct 36 are cylindrical, main oil gallery 1a and 1 concentric setting of piston rod, secondary
The 3a of oil duct one vertical section 3b2, the 3b of secondary oil duct two vertical section 3b2 and secondary oil duct 36 oil-feed section 6b are worn successively from inside to outside
It is located in main oil gallery 1a and is sealed between each vertical section 3b2 or oil-feed section 6b both ends by seal.Above-mentioned design is closed
Reason make use of installing space so that total is more compact, and installing space is small, so as to realize in the less field of spatial dimension
Close and realize more double acting hydraulic cylinders 4 of series connection and single-action hydraulic cylinder 29.And above-mentioned structure design is used, to piston rod 1
The machine-shaping of upper each oil duct is also more convenient, can use the form of big pipe sleeve tubule.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (9)
1. a kind of piston rod construction for being used to connect multiple hydraulic cylinders, including a piston rod (1), it is characterised in that the work
Main oil gallery (1a) is offered on stopper rod (1), the main oil gallery (1a) is used to be connected with single-action hydraulic cylinder one (2), the work
At least one set of secondary oil duct group (3) for being used to connect double acting hydraulic cylinder (4) and/or at least one is provided with stopper rod (1) vertically
For connecting the secondary oil duct three (6) of single-action hydraulic cylinder two (9), at least one piston body one is installed with the piston rod (1)
(5) and/or at least one piston body two (10), the quantity of the piston body one (5) are identical with the quantity of double acting hydraulic cylinder (4)
And the inner chamber of corresponding double acting hydraulic cylinder (4) can be divided into upper oil cavitie (4a) and lower oil cavitie (4b), the secondary oil duct group (3) can
Connected respectively with upper oil cavitie (4a) and lower oil cavitie (4b), quantity and the single-action hydraulic cylinder two (9) of the piston body two (10)
Quantity is identical and the inner chamber of corresponding single-action hydraulic cylinder two (9) can be divided into fluid chamber (9a) and without oil pocket (9b), described oil
Road three (6) connection fluid chamber (9a).
2. the piston rod construction according to claim 1 for being used to connect multiple hydraulic cylinders, it is characterised in that the secondary oil duct
Group (3) includes the secondary oil duct one (3a) that can be connected respectively with the upper oil cavitie (4a) and lower oil cavitie (4b) of double acting hydraulic cylinder (4)
With secondary oil duct two (3b).
3. the piston rod construction according to claim 2 for being used to connect multiple hydraulic cylinders, it is characterised in that secondary oil duct one
(3a) and time oil duct two (3b) are respectively provided with horizontal segment and vertical section, the horizontal segment and the secondary oil duct two of the secondary oil duct one (3a)
The horizontal segment of (3b) runs through the side wall of piston rod (1) and can be with the upper oil cavitie (4a) of double acting hydraulic cylinder (4) or lower oil
Chamber (4b) connects, and the vertical section of the secondary oil duct one (3a) and the vertical section of the secondary oil duct two (3b) are respectively positioned on the main oil gallery
In (1a) and end passes main oil gallery (1a), between the secondary oil duct one (3a) and main oil gallery (1a) and the secondary oil duct
Gap is respectively provided between two (3b) and main oil gallery (1a).
4. the piston rod construction according to claim 3 for being used to connect multiple hydraulic cylinders, it is characterised in that the secondary oil duct
The horizontal segment of one (3a) horizontal segment and time oil duct two (3b) is respectively positioned at the both sides up and down of piston body one (5) and respectively close to work
The upper side of cock body one (5) and downside are set.
5. the piston rod construction for being used to connect multiple hydraulic cylinders according to claim 3 or 4, it is characterised in that described time
Oil duct three (6) has horizontally disposed fuel-displaced section (6a) and the oil-feed section (6b) being vertically arranged, and fuel-displaced section (6a) is through work
The side wall of stopper rod (1) and it can be connected with the fluid chamber (9a) of single-action hydraulic cylinder two (9), the oil-feed section (6b) is located at institute
State in main oil gallery (1a) and end passes main oil gallery (1a), have between oil-feed section (6b) outer wall and main oil gallery (1a) inwall
Gap.
6. the piston rod construction according to claim 5 for being used to connect multiple hydraulic cylinders, it is characterised in that the main oil gallery
(1a), secondary oil duct one (3a), secondary oil duct two (3b) and time oil duct three (6) are cylindrical, the main oil gallery (1a) and the work
Stopper rod (1) concentric setting, vertical section, the vertical section of secondary oil duct two (3b) and time oil duct three (6) of the secondary oil duct one (3a)
Oil-feed section (6b) be located in successively from inside to outside in main oil gallery (1a) and between each vertical section or the both ends of oil-feed section (6b)
Sealed by seal.
7. the piston rod construction according to claim 5 for being used to connect multiple hydraulic cylinders, it is characterised in that the main oil gallery
(1a), secondary oil duct one (3a), secondary oil duct two (3b) and time oil duct three (6) are cylindrical, the main oil gallery (1a) and the work
Stopper rod (1) concentric setting, vertical section, the vertical section of secondary oil duct two (3b) and time oil duct three (6) of the secondary oil duct one (3a)
Oil-feed section (6b) be set in parallel in the main oil gallery (1a).
8. the piston rod construction for being used to connect multiple hydraulic cylinders according to claim 1 or 2 or 3 or 4, it is characterised in that
There is annular slot on the piston rod (1), annular collar (5a) and annular collar (5a) portion are arranged with the annular slot
Point stretch out outside annular slot, be respectively provided with annular recessed shoulder on the piston body one (5) and piston body two (10), in the recessed shoulder of annular
Provided with annular pressing plate (5b), annular collar (5a) lower surface is resisted against on the recessed shoulder of annular, upper surface and annular pressing plate (5b)
Against the annular pressing plate (5b) is fixed on the recessed shoulder of annular by bolt (8) annular collar (5a) being pressed on the recessed shoulder of annular
Between annular pressing plate (5b).
9. the piston rod construction for being used to connect multiple hydraulic cylinders according to claim 1 or 2 or 3 or 4, it is characterised in that
The piston rod (1) is made of steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791653.5A CN106246640B (en) | 2016-08-31 | 2016-08-31 | A kind of piston rod construction for being used to connect multiple hydraulic cylinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791653.5A CN106246640B (en) | 2016-08-31 | 2016-08-31 | A kind of piston rod construction for being used to connect multiple hydraulic cylinders |
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| CN106246640A CN106246640A (en) | 2016-12-21 |
| CN106246640B true CN106246640B (en) | 2017-12-29 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5186095A (en) * | 1991-01-09 | 1993-02-16 | Todd Motion Controls, Inc. | Piston assembly and method |
| DE19655013A1 (en) * | 1996-02-08 | 1999-01-21 | Mannesmann Sachs Ag | Piston and cylinder assembly |
| WO2002093055A1 (en) * | 2001-05-17 | 2002-11-21 | Hydrauto Ab | Sequence controlled hydraulic cylinders |
| CN101655112A (en) * | 2009-08-21 | 2010-02-24 | 丁振荣 | Series cylinder |
| CN202348823U (en) * | 2011-11-08 | 2012-07-25 | 江苏晨光盛得液压设备有限公司 | Compact double-stage double-action hydraulic cylinder |
| CN206072012U (en) * | 2016-08-31 | 2017-04-05 | 临海市晨光机床厂 | A kind of piston rod construction for connecting multiple hydraulic cylinders |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4651220B2 (en) * | 2001-05-07 | 2011-03-16 | 株式会社小松製作所 | Fluid cylinder with swivel joint |
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2016
- 2016-08-31 CN CN201610791653.5A patent/CN106246640B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5186095A (en) * | 1991-01-09 | 1993-02-16 | Todd Motion Controls, Inc. | Piston assembly and method |
| DE19655013A1 (en) * | 1996-02-08 | 1999-01-21 | Mannesmann Sachs Ag | Piston and cylinder assembly |
| WO2002093055A1 (en) * | 2001-05-17 | 2002-11-21 | Hydrauto Ab | Sequence controlled hydraulic cylinders |
| CN101655112A (en) * | 2009-08-21 | 2010-02-24 | 丁振荣 | Series cylinder |
| CN202348823U (en) * | 2011-11-08 | 2012-07-25 | 江苏晨光盛得液压设备有限公司 | Compact double-stage double-action hydraulic cylinder |
| CN206072012U (en) * | 2016-08-31 | 2017-04-05 | 临海市晨光机床厂 | A kind of piston rod construction for connecting multiple hydraulic cylinders |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106246640A (en) | 2016-12-21 |
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