CN106812754A - Long stroke hydraulic cylinder - Google Patents
Long stroke hydraulic cylinder Download PDFInfo
- Publication number
- CN106812754A CN106812754A CN201710164135.5A CN201710164135A CN106812754A CN 106812754 A CN106812754 A CN 106812754A CN 201710164135 A CN201710164135 A CN 201710164135A CN 106812754 A CN106812754 A CN 106812754A
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- cylinder body
- piston
- long stroke
- relief valve
- 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.)
- Pending
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
- F15B15/1423—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
- F15B15/08—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
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
-
- 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
- F15B15/202—Externally-operated valves mounted in or on the actuator
-
- 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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses long stroke hydraulic cylinder, including multiple hydraulic cylinders cylinder body and cylinder body attachment means；The concentric setting of multiple hydraulic cylinders cylinder body, and two neighboring hydraulic cylinder body connected by cylinder body attachment means.Long stroke hydraulic cylinder in the present invention, is different from the hydraulic cylinder interconnection technique of existing " cylinder sleeve cylinder ", discloses the hydraulic cylinder interconnection technique of a kind of " cylinder connects cylinder ".The technology connects two adjacent hydraulic cylinders using cylinder body attachment means, increases the space in hydraulic cylinder, realizes that long stroke is moved.
Description
Technical field
The present invention relates to mechanical equipment technical field, more particularly to a kind of long stroke hydraulic cylinder.
Background technology
In machine industry, hydraulic drive has become essential a special kind of skill and is widely used in various machines
In tool equipment.Hydraulic cylinder is most important executive component in Hydraulic Power Transmission System, and hydraulic energy is changed into mechanical energy by it, is realized straight
Line is moved back and forth.Because hydraulic cylinder structure is simple, flexible configuration, easy maintenance, so being used widely.It is empty installing
Between small and range demands occasion long, it is necessary to using telescopic hydraulic cylinder, existing telescopic hydraulic cylinder is generally the form of " cylinder sleeve cylinder ",
It is socketed to form by plunger and piston, but this kind of telescopic hydraulic cylinder of structure its stroke is shorter, usually 20m-30m.Right
In range demands mechanism more long, the structure of this kind " cylinder sleeve cylinder " can not meet requirement, accordingly, it would be desirable to one kind can reach
The hydraulic cylinder of long stroke.
The content of the invention
For solution in the prior art, the shorter technical problem of the stroke of existing hydraulic cylinder presence, technical scheme
It is as follows：
Long stroke hydraulic cylinder in the present invention, including multiple hydraulic cylinders cylinder body and cylinder body attachment means；The multiple hydraulic pressure
The concentric setting of cylinder cylinder body, and two neighboring hydraulic cylinder body connected by cylinder body attachment means.
In a preferred embodiment, including piston and multiple sealing ring；The piston is arranged at the hydraulic cylinder
Cylinder interior, the outer wall of the piston opens up a plurality of sealing notch, and the multiple sealing ring is sheathed at the sealing notch.
In a preferred embodiment, the piston is cavity structure, the one end open of piston, other end closing；
The blind end of the piston sets suspension rod, and the side wall of the piston sets hydraulic fluid port, and the hydraulic fluid port is arranged at the adjacent seals circle
Between.
In a preferred embodiment, including baffle plate, the first relief valve, the second relief valve and the 3rd relief valve；Institute
Baffle plate setting is stated in the internal piston, the internal piston is divided into the area of inner chamber one and the area's two parts of inner chamber two；The baffle plate
The first relief valve of upper installation, second relief valve and the 3rd relief valve are arranged at closing of the piston with suspension rod
End.
In a preferred embodiment, with bottom relief valve as boundary, one end sealing ring of piston passes through phase completely
The connecting interface of adjacent hydraulic cylinder body is passed sequentially through after the connecting interface of adjacent hydraulic cylinder body with piston other end sealing ring.
In a preferred embodiment, the cylinder body attachment means include butt tube, rubber ring, threaded sleeve and spiral shell
Line pressure ring；The butt tube is arranged at adjacent two hydraulic cylinder body and is close in the groove that interface is opened up, the rubber ring
The docking pipe outer wall is sheathed on, the threaded sleeve is sheathed on the rubber ring outer wall, and the two ends of the threaded sleeve are set
Threaded pressure ring locking screw sleeve pipe.
In a preferred embodiment, the adjacent hydraulic cylinder body connecting interface is angle stake, the angle of angle stake
Degree determines according to design requirement.
In a preferred embodiment, the gap of 1mm~2mm is set between the adjacent hydraulic cylinder body.
In a preferred embodiment, the length of the threaded sleeve is more than the length of butt tube, less than rubber ring
Length, the two ends of the rubber ring open up outer chamfering, and the threaded pressure ring opens up interior chamfering with the contact surface of the rubber ring,
The outer chamfering matches with the interior chamfering.
Long stroke hydraulic cylinder in the present invention, compared with prior art, its advantage is：
Long stroke hydraulic cylinder in the present invention, is different from the hydraulic cylinder interconnection technique of existing " cylinder sleeve cylinder ", discloses one kind
The hydraulic cylinder interconnection technique of " cylinder connects cylinder ".The technology connects two adjacent hydraulic cylinders using cylinder body attachment means, makes in hydraulic cylinder
Space increases, and its internal piston can realize that long stroke is moved.The present invention can increase hydraulic cylinder body number according to use demand
Amount, so that the stroke of hydraulic cylinder is unrestricted；Relief valve and hydraulic fluid port are provided with piston simultaneously, are realized to cylinder interior pressure
The control of power, it is to avoid when at the connecting interface that piston passes through adjacent hydraulic cylinder, internal pressure is excessive, causes piston packing swollen
It is swollen, sealing ring is damaged, and then cause the long stroke hydraulic cylinder works exception in the present invention.
Brief description of the drawings
Fig. 1 is the adjacent hydraulic cylinder attachment structure schematic diagram of long stroke hydraulic cylinder in the present invention；
Fig. 2 is the piston structure schematic diagram of long stroke hydraulic cylinder in the present invention；
Fig. 3 is the overall structure diagram of long stroke hydraulic cylinder in the present invention.
Specific embodiment
Below in conjunction with accompanying drawing of the invention, technical scheme is clearly and completely described.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
As shown in Figure 1-Figure 3, long stroke hydraulic cylinder of the invention, including multiple hydraulic cylinders cylinder body 1 and cylinder body attachment means；
The concentric setting of multiple hydraulic cylinders cylinder body 1, and two neighboring hydraulic cylinder body 1 connected by cylinder body attachment means.
Wherein cylinder body attachment means include butt tube 2, rubber ring 3, threaded sleeve 4 and threaded pressure ring 5；Butt tube 2 is set
In adjacent two hydraulic cylinder body 1 in the groove that interface is opened up, butt tube 2 connects two neighboring hydraulic cylinder body 1, rubber
Cushion rubber 3 is sheathed on the outer wall of butt tube 2, and threaded sleeve 4 is sheathed on the outer wall of rubber ring 3, and the two ends of threaded sleeve 4 are threaded pressure ring
5 locking screw sleeve pipes.Its further groove is gone out near interface turning in adjacent hydraulic cylinder body 1 using lathe, the groove
Wall thickness of the depth less than hydraulic cylinder body, the depth of groove ensure that between hydraulic cylinder body external diameter and internal diameter
The intensity of residual wall thickness, will not deform in the case of outer active force.Butt tube 2 connects two adjacent hydraulic cylinder bodies 1,
Align two cylinder body concentricitys.External diameter after butt tube 2 is installed is concordant with cylinder body external diameter, internal diameter and cylinder body after butt tube installation
The region that turning goes out is fitted close.Rubber ring 3 is closely pressed together on outside butt tube 2, and extends to cylinder body wall thickness regions, stretches out right
The certain size of adapter 2, the size of 1cm-2cm.The two ends of rubber ring 3 open up outer chamfering, and the angle of outer chamfering is 45°.Screw thread
Sleeve pipe 4 is two ends external screw thread, and threaded sleeve 4 is in close contact with rubber ring 3, and length is less than rubber ring 3, more than butt tube 2.Screw thread
The bottom of pressure ring 5 sets interior chamfering, and the angle of interior chamfering is also 45°, during installation, interior chamfering contacts with each other with outer chamfering, screw thread pressure
Ring 5 is mutually closely connected by screw thread with threaded sleeve 4, rubber ring 3 is compressed, so as to reach sealing effectiveness.
Long stroke hydraulic cylinder of the invention, including piston 6 and sealing ring 14；Piston 6 is arranged inside hydraulic cylinder body 1,
The outer wall of piston 6 opens up a plurality of sealing notch 13, and sealing ring 14 is sheathed at sealing notch 13, realizes piston 6 and hydraulic cylinder
Body 1 is tightly connected.Wherein piston 6 is one end open, and the structure of other end closing, the blind end of piston 6 sets suspension rod 7, living
The side wall of plug 6 sets hydraulic fluid port 12, and hydraulic fluid port 12 is arranged between adjacent seals circle 14.Baffle plate 11 is provided with the inside of piston 6, is kept off
Plate 11 will be divided into the area 15 of inner chamber one and the two parts of 2nd area of inner chamber 16 inside piston 6；First relief valve 8, second are installed on baffle plate 11
The relief valve 10 of relief valve 9 and the 3rd is arranged at blind end of the piston 6 with suspension rod 7.Wherein hydraulic fluid port 12 is hole shape, and hydraulic fluid port 12 is in net
Shape is distributed.First relief valve 8, the second relief valve 9, the effect balance area 15 of inner chamber one of the 3rd relief valve 10 and the area 16 of inner chamber two
Pressure.
During to ensure that piston 6 is moved at the connecting interface of adjacent hydraulic cylinder body 1, interface will not damage the close of piston 6
Seal 14, angle stake is set to by the connecting interface of adjacent hydraulic cylinder body 1, and the angle of inclination of angle stake is true according to setting requirements
It is fixed.
It is boundary with the first relief valve 8 by taking piston upwards as an example, piston top half sealing ring 14 passes through phase completely
After the connecting interface of adjacent hydraulic cylinder body 1, piston the latter half sealing ring 14 successively with the connecting interface of adjacent hydraulic cylinder body 1
Contact with each other, so as to gradually pass through the connecting interface of adjacent hydraulic cylinder body 1.
It is boundary with the first relief valve 8 so that piston is moved downward as an example, piston the latter half sealing ring 14 passes through phase completely
After the connecting interface of adjacent hydraulic cylinder body 1, piston top half sealing ring 14 successively with the connecting interface of adjacent hydraulic cylinder body 1
Contact with each other, so as to gradually pass through the connecting interface of adjacent hydraulic cylinder body 1.
The gap of 1mm~2mm is left between two adjacent hydraulic cylinder bodies 1, this gap is expansion clearance when expanding with heat and contract with cold.
When piston 6 is moved upwards, the first relief valve 8, the second relief valve 9 and the 3rd relief valve 10 are in closed mode.
Piston 6 starts pressure release and reaches the process of sealing effectiveness by the connecting interface of adjacent hydraulic cylinder body 1：Preferentially by hydraulic pressure
The sealing ring 14 in the area 15 of inner chamber one of the connecting interface of cylinder cylinder body 1 is started to shrink at, and is opened by after the connecting interface of hydraulic cylinder body 1
Begin to expand, until reaching sealing effectiveness.Then opened by the sealing ring 14 in the area 16 of inner chamber two of the connecting interface of hydraulic cylinder body 1
Begin to shrink, by starting expansion after the connecting interface of hydraulic cylinder body 1, until reaching sealing effectiveness.
When piston 6 is moved downward, the first relief valve 8, the second relief valve 9 and the 3rd relief valve 10 are in opening.
Piston 6 starts pressure release and reaches the process of sealing effectiveness by the connecting interface of adjacent hydraulic cylinder body 1：Preferentially by hydraulic pressure
The sealing ring 14 in the area 16 of inner chamber two of the connecting interface of cylinder cylinder body 1 is started to shrink at, and is opened by after the connecting interface of hydraulic cylinder body 1
Begin to expand, until reaching sealing effectiveness.Start by the sealing ring 14 in the area 15 of inner chamber one of the connecting interface of hydraulic cylinder body 1 afterwards
Shrink, by starting expansion after the connecting interface of hydraulic cylinder body 1, until reaching sealing effectiveness.
The acting as in the connecting interface by adjacent hydraulic cylinder body 1 of hydraulic fluid port 12：The liquid in outside in balance hydraulic fluid port 12
Body pressure, makes the connecting interface of the adjacent hydraulic cylinder body 1 of the steady safety of piston 6.
Resulting effect is：The preferential inner chamber zone by the connecting interface of hydraulic cylinder body 1 moves another interior alveolus
By the connecting interface of hydraulic cylinder body 1.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. long stroke hydraulic cylinder, it is characterised in that including multiple hydraulic cylinders cylinder body and cylinder body attachment means；The multiple hydraulic cylinder
The concentric setting of cylinder body, and two neighboring hydraulic cylinder body connected by cylinder body attachment means.
2. long stroke hydraulic cylinder according to claim 1, it is characterised in that including piston and multiple sealing rings；The work
Plug is arranged inside the hydraulic cylinder body, and the outer wall of the piston opens up a plurality of sealing notch, and the multiple sealing ring is arranged
At the sealing notch.
3. long stroke hydraulic cylinder according to claim 2, it is characterised in that the piston is cavity structure, the one of piston
End opening, other end closing；The blind end of the piston sets suspension rod, and the side wall of the piston sets hydraulic fluid port, and the hydraulic fluid port sets
It is placed between the adjacent seals circle.
4. long stroke hydraulic cylinder according to claim 3, it is characterised in that including baffle plate, the first relief valve, the second pressure release
Valve and the 3rd relief valve；The internal piston is divided into the area of inner chamber one and inner chamber two by the baffle plate setting in the internal piston
Area's two parts；First relief valve is installed, second relief valve and the 3rd relief valve are arranged at the work on the baffle plate
Blind end of the plug with suspension rod.
5. the long stroke hydraulic cylinder according to claim any one of 1-4, it is characterised in that the cylinder body attachment means include
Butt tube, rubber ring, threaded sleeve and threaded pressure ring；The butt tube is arranged at adjacent two hydraulic cylinder body near interface
In the groove that place opens up, the rubber ring sleeve is located at the docking pipe outer wall, and the threaded sleeve is sheathed on outside the rubber ring
Wall, the two ends of the threaded sleeve are threaded pressure ring locking screw sleeve pipe.
6. long stroke hydraulic cylinder according to claim 1, it is characterised in that set between the adjacent hydraulic cylinder body
The gap of 1mm~2mm.
7. long stroke hydraulic cylinder according to claim 5, it is characterised in that the length of the threaded sleeve is more than butt tube
Length, less than the length of rubber ring, the two ends of the rubber ring open up outer chamfering, the threaded pressure ring and the rubber ring
Contact surface opens up interior chamfering, and the outer chamfering matches with the interior chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710164135.5A CN106812754A (en) | 2017-03-20 | 2017-03-20 | Long stroke hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710164135.5A CN106812754A (en) | 2017-03-20 | 2017-03-20 | Long stroke hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106812754A true CN106812754A (en) | 2017-06-09 |
Family
ID=59115967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710164135.5A Pending CN106812754A (en) | 2017-03-20 | 2017-03-20 | Long stroke hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106812754A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2854952A (en) * | 1954-12-29 | 1958-10-07 | Wilson John Hart | Threadless coupled, slender ratio, hydraulic cylinder-plunger assembly |
| US5167182A (en) * | 1991-10-04 | 1992-12-01 | Sims James O | Modular fluid actuator |
| CN1693746A (en) * | 2005-05-23 | 2005-11-09 | 程宇鸣 | Thin wall tightening connector for motal pipe |
| CN201155501Y (en) * | 2008-01-23 | 2008-11-26 | 武汉华翰液动机械有限责任公司 | Barrel combination type hydraulic cylinder |
| CN203297793U (en) * | 2013-06-04 | 2013-11-20 | 无锡金顶石油管材配件制造有限公司 | Embedded sealing connector structure of high-pressure conveying pipeline |
| CN205918685U (en) * | 2016-06-27 | 2017-02-01 | 宁波以赛亚气动成套有限公司 | Compact multiposition jar of doubly doing all can |
-
2017
- 2017-03-20 CN CN201710164135.5A patent/CN106812754A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2854952A (en) * | 1954-12-29 | 1958-10-07 | Wilson John Hart | Threadless coupled, slender ratio, hydraulic cylinder-plunger assembly |
| US5167182A (en) * | 1991-10-04 | 1992-12-01 | Sims James O | Modular fluid actuator |
| CN1693746A (en) * | 2005-05-23 | 2005-11-09 | 程宇鸣 | Thin wall tightening connector for motal pipe |
| CN201155501Y (en) * | 2008-01-23 | 2008-11-26 | 武汉华翰液动机械有限责任公司 | Barrel combination type hydraulic cylinder |
| CN203297793U (en) * | 2013-06-04 | 2013-11-20 | 无锡金顶石油管材配件制造有限公司 | Embedded sealing connector structure of high-pressure conveying pipeline |
| CN205918685U (en) * | 2016-06-27 | 2017-02-01 | 宁波以赛亚气动成套有限公司 | Compact multiposition jar of doubly doing all can |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170609 |