CN108799246A - Adaptive flexibility hydraulic cylinder - Google Patents
Adaptive flexibility hydraulic cylinder Download PDFInfo
- Publication number
- CN108799246A CN108799246A CN201810886270.5A CN201810886270A CN108799246A CN 108799246 A CN108799246 A CN 108799246A CN 201810886270 A CN201810886270 A CN 201810886270A CN 108799246 A CN108799246 A CN 108799246A
- Authority
- CN
- China
- Prior art keywords
- connecting pin
- piston
- cover board
- groove
- piston rod
- 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.)
- Granted
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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
- F15B15/1423—Component parts; Constructional details
-
- 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
- F15B15/1452—Piston sealings
-
- 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
- F15B15/1461—Piston rod sealings
-
- 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 adaptive flexible hydraulic cylinder of the present invention, belongs to technical field of hydraulic oil cylinder；Technical problem to be solved is to provide a kind of hydraulic cylinder for allowing piston axis to have certain angle with piston rod axis；The technical solution adopted by the present invention is：Piston rod is connect with piston by flexible link；One end of flexible link is the first bulb connecting pin, and the other end is groove connecting pin, and the first cover board is sleeved on the first bulb connecting pin, and the second cover board is fixed on by screw or bolt on groove connecting pin；Tool has there are one cylinder shape groove, on the bottom surface of cylinder shape groove and is fixed on the bottom surface of cylinder shape groove by screw or bolt with matched second spherical groove in the first bulb of flexible link connecting pin, the first cover board on piston end surface；One end that piston rod is connect with piston is the second bulb connecting pin, and the second bulb connecting pin is located in the first spherical groove；The present invention provides a kind of flexible hydraulic cylinders.
Description
Technical field
The adaptive flexible hydraulic cylinder of the present invention, belongs to technical field of hydraulic oil cylinder, and in particular to a kind of permission piston shaft
Line has the hydraulic cylinder of certain angle with piston rod axis.
Background technology
Hydraulic cylinder generally use piston and piston rod rigid attachment, feature is that product structure is simple, in cylinder action mistake
It is used as two power bars in journey.But it is longer in hydraulic cylinder stroke or when structural member installation error is larger, often occur with structural member
Interference phenomenon causes oil cylinder to bear lateral force, each pilot seal element circumferential direction unbalance stress in oil cylinder inside, hair in action process
Phenomena such as raw abnormal sound, leakage.
Invention content
The present invention overcomes the shortcomings of the prior art, and technical problem to be solved is to provide a kind of piston and piston rod
Flexible connection allows piston axis to have the hydraulic cylinder of certain angle with piston rod axis.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：Adaptive flexibility hydraulic cylinder, including cylinder
Body, cylinder cap, piston and piston rod, cylinder cap are fixed on the open end of cylinder body, and piston is located at cylinder interior, and piston rod one end is located at cylinder
Internal portion is simultaneously connect with piston, and the other end is stretched out by the through-hole on cylinder cap outside cylinder body, and piston rod is connected with piston by flexibility
Connection device connects；
One end of flexible link has the first hemisphere jut, is the first bulb connecting pin, first is provided in the other end face
Spherical groove is groove connecting pin, and the first cover board is sleeved on the first bulb connecting pin, the first cover board middle through-hole and the
The mating surface of one bulb connecting pin is the spherical surface being adapted, and the second cover board is fixed on by screw or bolt on groove connecting pin,
It is provided with through-hole in the middle part of second cover board；
Tool has there are one cylinder shape groove, on the bottom surface of cylinder shape groove with flexibility even on the end face that piston is connect with piston rod
Matched second spherical groove in the first bulb of connection device connecting pin, the first cover board are fixed on cylindrical recessed by screw or bolt
On the bottom surface of slot, the first bulb connecting pin is limited in the second spherical groove；
One end that piston rod is connect with piston has the second hemisphere jut, is the second bulb connecting pin, the second bulb connection
End be located at the first spherical groove in, the second bulb connecting pin is limited in the first spherical groove by the second cover board, the second cover board with
The mating surface of second bulb connecting pin is the spherical surface being adapted.
Fixed first cover board is SOC.HD. cap screw or bolt, and one is provided on the groove connecting pin of flexible link
It is a or multiple can pass through SOC.HD. cap screw or the through-hole of bolt.
Also is provided with can be by SOC.HD. cap screw or the through-hole of bolt for corresponding position on second cover board.
First cover board and the second cover board are split type, are made of the half of two symmetrical structures.
Further include bar director element, bar director element is a split ring, and outer ring surface is one section on a spherical surface
Cambered surface, bar are set with director element and are provided with a circle and the matched cambered surface groove of bar director element on the piston rod, on cylinder cap,
Bar is located at director element in cambered surface groove.
The top of first hemisphere jut and the second hemisphere jut is processed as plane, corresponding second spherical groove and
The bottom surface of first spherical groove is also plane.
A circle or multi-turn piston guide sealing element are provided between the piston and cylinder body.
A circle or multi-turn bar sealing ring are provided between the piston rod and cylinder cap.
The present invention has the advantages that compared with prior art.
1, in the present invention, piston and piston rod allow piston and piston rod by flexible connecting device Flexible spacecraft
Axis has certain angle, compensates for error caused by oil cylinder stroke is longer or structural member installation, reduces under external force
The interference phenomenon of internal each element, avoids the generation of the abnormal phenomenon such as oil leak and abnormal sound.
2, in the present invention, flexible link connects for both ends spherical surface, can rotate in a certain range, realize piston rod
In the rotation of certain angle.
3, in the present invention, bar director element is had also been devised, the cooperation bottom surface of bar director element and mounting groove is spherical surface,
Piston rod can be rotated using the center of circle of bar director element mounting groove spherical surface as the center of circle relative to cylinder barrel under the action of lateral force
Certain angle.
4, in the present invention, the cooperation bottom surface of bar director element and mounting groove is spherical surface, also so that piston rod is being moved through
Cheng Zhong, bar director element and piston rod bearing area are constant, the stress concentration for avoiding director element from being born, to what is caused
Frictional force between director element and piston rod is uneven, the abnormalities such as abnormal sound occurs, creeps.
5, in the present invention, piston guide sealing element is installed in piston guide slot, is coordinated with inner hole of cylinder, and piston guide is close
The fit clearance of sealing and inner hole of cylinder is not influenced by piston rod rotation amount, is operated steadily, sealing effect is excellent.
6, in the present invention, flexible link is mounted in the cylinder shape groove of piston, mechanical position limitation when piston rod stretches out
Or it is carried out by piston, does not interfere with the stroke of oil cylinder.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is structural schematic diagram when piston rod stretches out in Fig. 1.
Fig. 3 is the structural schematic diagram of flexible link in the present invention.
Fig. 4 is the structural schematic diagram of bar director element in the present invention.
Fig. 5 is the sectional view of Fig. 4.
Fig. 6 is the structural schematic diagram of the first cover board in the present invention.
Fig. 7 is the left view of Fig. 6.
Fig. 8 has use state diagram when certain angle for actual piston bar with piston axis.
Fig. 9 is structural schematic diagram when piston rod stretches out in Fig. 8.
In figure：1 is cylinder body, and 2 be cylinder cap, and 3 be piston, and 4 be piston rod, and 5 be the first bulb connecting pin, and 6 connect for groove
End, 7 be the first cover board, and 8 be the second cover board, and 9 be cylinder shape groove, and 10 be the second bulb connecting pin, and 11 be bar director element,
12 be piston guide sealing element.
Specific implementation mode
The present invention will be further described in detail below in conjunction with the accompanying drawings.
As shown in Fig. 1-Fig. 7, the present invention adaptively flexible hydraulic cylinder, including cylinder body 1, cylinder cap 2, piston 3 and piston rod
4, cylinder cap 2 is fixed on the open end of cylinder body 1, and piston 3 is located inside cylinder body 1,4 one end of piston rod be located at the inside of cylinder body 1 and with work
3 connection of plug, the other end are stretched out by the through-hole on cylinder cap 2 outside cylinder body 1, it is characterised in that：Piston rod 4 is with piston 3 by scratching
Property attachment device connection；
One end of flexible link has the first hemisphere jut, is the first bulb connecting pin 5, first is provided in the other end face
Spherical groove is groove connecting pin 6, and the first cover board 7 is sleeved on the first bulb connecting pin 5,7 middle through-hole of the first cover board
Mating surface with the first bulb connecting pin 5 is the spherical surface being adapted, and the second cover board 8 is fixed on groove by screw or bolt and connects
On end 6,8 middle part of the second cover board is provided with through-hole；
Tool has and scratches on the bottom surface of cylinder shape groove 9 there are one cylinder shape groove 9 on the end face that piston 3 is connect with piston rod 4
5 matched second spherical groove of property the first bulb of attachment device connecting pin, the first cover board 7 are fixed on circle by screw or bolt
On the bottom surface of cylindrical groove 9, the first bulb connecting pin 5 is limited in the second spherical groove；
One end that piston rod 4 is connect with piston 3 has the second hemisphere jut, is the second bulb connecting pin 10, second bulb
Connecting pin 10 is located in the first spherical groove, and the second bulb connecting pin 10 is limited in the first spherical groove by the second cover board 8, the
The mating surface of two cover boards 8 and the second bulb connecting pin 10 is the spherical surface being adapted.
Fixed first cover board 7 is SOC.HD. cap screw or bolt, is provided on the groove connecting pin 6 of flexible link
One or more can pass through SOC.HD. cap screw or the through-hole of bolt.
Also is provided with can be by SOC.HD. cap screw or the through-hole of bolt for corresponding position on second cover board 8.
First cover board, 7 and second cover board 8 is split type, is made of the half of two symmetrical structures.
Further include bar director element 11, bar director element 11 is a split ring, and outer ring surface is on a spherical surface
One section of cambered surface, bar director element 11 are sleeved on piston rod 4, and a circle is provided on cylinder cap 2 and is matched with bar director element 11
Cambered surface groove, bar is located at director element 11 in cambered surface groove.
The top of first hemisphere jut and the second hemisphere jut is processed as plane, corresponding second spherical groove and
The bottom surface of first spherical groove is also plane.
A circle or multi-turn piston guide sealing element 12 are provided between the piston 3 and cylinder body 1.
A circle or multi-turn bar sealing ring are provided between the piston rod 4 and cylinder cap 2.
As shown in Figure 8, Figure 9, in actual use, hydraulic cylinder stroke is longer or when structural member installation error is larger, living
The axis of stopper rod 4 and piston 3 can be misaligned, and there is certain angle, the flexible link in the present invention to be connected by two bulbs
Connect end and groove connecting pin, depending post director element 11 so that 4 rotatable certain angle of piston rod compensates to a certain extent
Error caused by oil cylinder stroke is longer or structural member installation, the interference for reducing oil cylinder internal each element under external force are existing
As avoiding the generation of the abnormal phenomenon such as oil leak and abnormal sound.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Go out various change.
Claims (8)
1. adaptive flexibility hydraulic cylinder, including cylinder body（1）, cylinder cap（2）, piston（3）And piston rod（4）, cylinder cap（2）It is fixed on
Cylinder body（1）Open end, piston（3）Positioned at cylinder body（1）Inside, piston rod（4）One end is located at cylinder body（1）Internal and and piston
（3）Connection, the other end pass through cylinder cap（2）On through-hole stretch out cylinder body（1）It is external, it is characterised in that：Piston rod（4）With piston
（3）It is connected by flexible link；
One end of flexible link has the first hemisphere jut, is the first bulb connecting pin（5）, is provided in the other end face
One spherical groove is groove connecting pin（6）, the first cover board（7）It is sleeved on the first bulb connecting pin（5）On, first cover board
（7）Middle through-hole and the first bulb connecting pin（5）Mating surface be adaptable spherical surface, the second cover board（8）Pass through screw or spiral shell
Bolt is fixed on groove connecting pin（6）On, the second cover board（8）Middle part is provided with through-hole；
Piston（3）With piston rod（4）There are one cylinder shape grooves for tool on the end face of connection（9）, cylinder shape groove（9）Bottom surface on
With with the first bulb of flexible link connecting pin（5）Matched second spherical groove, the first cover board（7）By screw or
Bolt is fixed on cylinder shape groove（9）Bottom surface on, by the first bulb connecting pin（5）It is limited in the second spherical groove；
Piston rod（4）With piston（3）One end of connection has the second hemisphere jut, is the second bulb connecting pin（10）, described
Two bulb connecting pins（10）In the first spherical groove, the second cover board（8）By the second bulb connecting pin（10）It is limited in first
In spherical groove, the second cover board（8）With the second bulb connecting pin（10）Mating surface be adaptable spherical surface.
2. adaptive flexible hydraulic cylinder according to claim 1, it is characterised in that：Fixed first cover board（7）'s
It is SOC.HD. cap screw or bolt, the groove connecting pin of flexible link（6）On be provided with one or more can be by interior six sides spiral shell
The through-hole of nail or bolt.
3. adaptive flexible hydraulic cylinder according to claim 2, it is characterised in that：Second cover board（8）It is upper opposite
The position answered also is provided with can be by SOC.HD. cap screw or the through-hole of bolt.
4. the adaptive flexible hydraulic cylinder according to claim 1-3 any one, it is characterised in that：First cover board
（7）With the second cover board（8）It is split type, is made of the half of two symmetrical structures.
5. the adaptive flexible hydraulic cylinder according to claim 1-3 any one, it is characterised in that：Further include bar with leading
To element（11）, bar director element（11）For a split ring, outer ring surface is one section of cambered surface on a spherical surface, and bar is oriented to
Element（11）It is sleeved on piston rod（4）On, cylinder cap（2）On be provided with a circle and bar director element（11）Matched cambered surface is recessed
Slot, bar director element（11）In cambered surface groove.
6. the adaptive flexible hydraulic cylinder according to claim 1-3 any one, it is characterised in that：Described first is spherical
The top of protrusion and the second hemisphere jut is processed as plane, the bottom surface of corresponding second spherical groove and the first spherical groove
For plane.
7. the adaptive flexible hydraulic cylinder according to claim 1-3 any one, it is characterised in that：The piston（3）
With cylinder body（1）Between be provided with a circle or multi-turn piston guide sealing element（12）.
8. the adaptive flexible hydraulic cylinder according to claim 1-3 any one, it is characterised in that：The piston rod
（4）With cylinder cap（2）Between be provided with a circle or multi-turn bar sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810886270.5A CN108799246B (en) | 2018-08-06 | 2018-08-06 | Self-adaptive flexible hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810886270.5A CN108799246B (en) | 2018-08-06 | 2018-08-06 | Self-adaptive flexible hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108799246A true CN108799246A (en) | 2018-11-13 |
| CN108799246B CN108799246B (en) | 2023-09-29 |
Family
ID=64079201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810886270.5A Active CN108799246B (en) | 2018-08-06 | 2018-08-06 | Self-adaptive flexible hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108799246B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538576A (en) * | 2019-01-17 | 2019-03-29 | 大连诺美液压件有限公司 | One kind is with sideways against power hydraulic cylinder |
| CN112253610A (en) * | 2020-09-29 | 2021-01-22 | 九江新恒机械制造有限公司 | Hydraulic cylinder connecting structure of automobile injection mold |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096038A (en) * | 2006-06-28 | 2008-01-02 | 浙江金马逊机械有限公司 | Multi-stage loose-core for pipe bending machine |
| US20100181158A1 (en) * | 2009-01-22 | 2010-07-22 | Fte Automotive Gmbh | Slave Cylinder for a Vibration-Damped Hydraulic Force Transmission System, Particularly a Hydraulic Clutch Actuating System for Motor Vehicles |
| DE102009016465A1 (en) * | 2009-04-04 | 2010-10-14 | Zf Friedrichshafen Ag | Operating arrangement for e.g. brake of motor vehicle used in automotive engineering, has piston rod whose end areas are connected with pedal and piston, respectively, where piston takes predetermined rotary position at pedal |
| CN202228467U (en) * | 2011-08-17 | 2012-05-23 | 湖南特力液压有限公司 | Piston cylinder |
| CN205876849U (en) * | 2016-08-08 | 2017-01-11 | 韶关市伟光液压油缸有限公司 | Novel pneumatic cylinder or pneumatic cylinder of sphere direction |
| CN208719054U (en) * | 2018-08-06 | 2019-04-09 | 山西航天清华装备有限责任公司 | A kind of adaptive flexible hydraulic cylinder |
-
2018
- 2018-08-06 CN CN201810886270.5A patent/CN108799246B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096038A (en) * | 2006-06-28 | 2008-01-02 | 浙江金马逊机械有限公司 | Multi-stage loose-core for pipe bending machine |
| US20100181158A1 (en) * | 2009-01-22 | 2010-07-22 | Fte Automotive Gmbh | Slave Cylinder for a Vibration-Damped Hydraulic Force Transmission System, Particularly a Hydraulic Clutch Actuating System for Motor Vehicles |
| DE102009016465A1 (en) * | 2009-04-04 | 2010-10-14 | Zf Friedrichshafen Ag | Operating arrangement for e.g. brake of motor vehicle used in automotive engineering, has piston rod whose end areas are connected with pedal and piston, respectively, where piston takes predetermined rotary position at pedal |
| CN202228467U (en) * | 2011-08-17 | 2012-05-23 | 湖南特力液压有限公司 | Piston cylinder |
| CN205876849U (en) * | 2016-08-08 | 2017-01-11 | 韶关市伟光液压油缸有限公司 | Novel pneumatic cylinder or pneumatic cylinder of sphere direction |
| CN208719054U (en) * | 2018-08-06 | 2019-04-09 | 山西航天清华装备有限责任公司 | A kind of adaptive flexible hydraulic cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538576A (en) * | 2019-01-17 | 2019-03-29 | 大连诺美液压件有限公司 | One kind is with sideways against power hydraulic cylinder |
| CN112253610A (en) * | 2020-09-29 | 2021-01-22 | 九江新恒机械制造有限公司 | Hydraulic cylinder connecting structure of automobile injection mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108799246B (en) | 2023-09-29 |
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